mono/mini/method-to-ir.c

   1 /*
   2  * method-to-ir.c: Convert CIL to the JIT internal representation
   3  *
   4  * Author:
   5  *   Paolo Molaro (lupus@ximian.com)
   6  *   Dietmar Maurer (dietmar@ximian.com)
   7  *
   8  * (C) 2002 Ximian, Inc.
   9  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  10  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  11  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  12  */
  13
  14 #include <config.h>
  15
  16 #ifndef DISABLE_JIT
  17
  18 #include <signal.h>
  19
  20 #ifdef HAVE_UNISTD_H
  21 #include <unistd.h>
  22 #endif
  23
  24 #include <math.h>
  25 #include <string.h>
  26 #include <ctype.h>
  27
  28 #ifdef HAVE_SYS_TIME_H
  29 #include <sys/time.h>
  30 #endif
  31
  32 #ifdef HAVE_ALLOCA_H
  33 #include <alloca.h>
  34 #endif
  35
  36 #include <mono/utils/memcheck.h>
  37 #include "mini.h"
  38 #include <mono/metadata/abi-details.h>
  39 #include <mono/metadata/assembly.h>
  40 #include <mono/metadata/attrdefs.h>
  41 #include <mono/metadata/loader.h>
  42 #include <mono/metadata/tabledefs.h>
  43 #include <mono/metadata/class.h>
  44 #include <mono/metadata/object.h>
  45 #include <mono/metadata/exception.h>
  46 #include <mono/metadata/opcodes.h>
  47 #include <mono/metadata/mono-endian.h>
  48 #include <mono/metadata/tokentype.h>
  49 #include <mono/metadata/tabledefs.h>
  50 #include <mono/metadata/marshal.h>
  51 #include <mono/metadata/debug-helpers.h>
  52 #include <mono/metadata/mono-debug.h>
  53 #include <mono/metadata/mono-debug-debugger.h>
  54 #include <mono/metadata/gc-internals.h>
  55 #include <mono/metadata/security-manager.h>
  56 #include <mono/metadata/threads-types.h>
  57 #include <mono/metadata/security-core-clr.h>
  58 #include <mono/metadata/profiler-private.h>
  59 #include <mono/metadata/profiler.h>
  60 #include <mono/metadata/monitor.h>
  61 #include <mono/metadata/debug-mono-symfile.h>
  62 #include <mono/utils/mono-compiler.h>
  63 #include <mono/utils/mono-memory-model.h>
  64 #include <mono/utils/mono-error-internals.h>
  65 #include <mono/metadata/mono-basic-block.h>
  66 #include <mono/metadata/reflection-internals.h>
  67 #include <mono/utils/mono-threads-coop.h>
  68
  69 #include "trace.h"
  70
  71 #include "ir-emit.h"
  72
  73 #include "jit-icalls.h"
  74 #include "jit.h"
  75 #include "debugger-agent.h"
  76 #include "seq-points.h"
  77 #include "aot-compiler.h"
  78 #include "mini-llvm.h"
  79
  80 #define BRANCH_COST 10
  81 #define INLINE_LENGTH_LIMIT 20
  82
  83 /* These have 'cfg' as an implicit argument */
  84 #define INLINE_FAILURE(msg) do {                                                                        \
  85         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  86                 inline_failure (cfg, msg);                                                                              \
  87                 goto exception_exit;                                                                                    \
  88         } \
  89         } while (0)
  90 #define CHECK_CFG_EXCEPTION do {\
  91                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  92                         goto exception_exit;                                            \
  93         } while (0)
  94 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  95                 field_access_failure ((cfg), (method), (field));                        \
  96                 goto exception_exit;    \
  97         } while (0)
  98 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  99                 if (cfg->gshared) {                                                                     \
 100                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 101                         goto exception_exit;    \
 102                 }                       \
 103         } while (0)
 104 #define GSHAREDVT_FAILURE(opcode) do {          \
 105         if (cfg->gsharedvt) {                                                                                           \
 106                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 107                 goto exception_exit;                                                                                    \
 108         }                                                                                                                                       \
 109         } while (0)
 110 #define OUT_OF_MEMORY_FAILURE do {      \
 111                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 112                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 113                 goto exception_exit;    \
 114         } while (0)
 115 #define DISABLE_AOT(cfg) do { \
 116                 if ((cfg)->verbose_level >= 2)                                            \
 117                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 118                 (cfg)->disable_aot = TRUE;                                                        \
 119         } while (0)
 120 #define LOAD_ERROR do { \
 121                 break_on_unverified ();                                                         \
 122                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 123                 goto exception_exit;                                                                    \
 124         } while (0)
 125
 126 #define TYPE_LOAD_ERROR(klass) do { \
 127                 cfg->exception_ptr = klass; \
 128                 LOAD_ERROR;                                     \
 129         } while (0)
 130
 131 #define CHECK_CFG_ERROR do {\
 132                 if (!mono_error_ok (&cfg->error)) { \
 133                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 134                         goto mono_error_exit; \
 135                 } \
 136         } while (0)
 137
 138 /* Determine whenever 'ins' represents a load of the 'this' argument */
 139 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 140
 141 static int ldind_to_load_membase (int opcode);
 142 static int stind_to_store_membase (int opcode);
 143
 144 int mono_op_to_op_imm (int opcode);
 145 int mono_op_to_op_imm_noemul (int opcode);
 146
 147 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 148
 149 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 150                                                   guchar *ip, guint real_offset, gboolean inline_always);
 151 static MonoInst*
 152 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 153
 154 /* helper methods signatures */
 155 static MonoMethodSignature *helper_sig_domain_get;
 156 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 157 static MonoMethodSignature *helper_sig_llvmonly_imt_thunk;
 158
 159
 160 /* type loading helpers */
 161 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, System.Runtime.CompilerServices, RuntimeHelpers)
 162 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, System.Diagnostics, DebuggableAttribute)
 163
 164 /*
 165  * Instruction metadata
 166  */
 167 #ifdef MINI_OP
 168 #undef MINI_OP
 169 #endif
 170 #ifdef MINI_OP3
 171 #undef MINI_OP3
 172 #endif
 173 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 174 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 175 #define NONE ' '
 176 #define IREG 'i'
 177 #define FREG 'f'
 178 #define VREG 'v'
 179 #define XREG 'x'
 180 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 181 #define LREG IREG
 182 #else
 183 #define LREG 'l'
 184 #endif
 185 /* keep in sync with the enum in mini.h */
 186 const char
 187 ins_info[] = {
 188 #include "mini-ops.h"
 189 };
 190 #undef MINI_OP
 191 #undef MINI_OP3
 192
 193 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 194 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 195 /*
 196  * This should contain the index of the last sreg + 1. This is not the same
 197  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 198  */
 199 const gint8 ins_sreg_counts[] = {
 200 #include "mini-ops.h"
 201 };
 202 #undef MINI_OP
 203 #undef MINI_OP3
 204
 205 #define MONO_INIT_VARINFO(vi,id) do { \
 206         (vi)->range.first_use.pos.bid = 0xffff; \
 207         (vi)->reg = -1; \
 208         (vi)->idx = (id); \
 209 } while (0)
 210
 211 guint32
 212 mono_alloc_ireg (MonoCompile *cfg)
 213 {
 214         return alloc_ireg (cfg);
 215 }
 216
 217 guint32
 218 mono_alloc_lreg (MonoCompile *cfg)
 219 {
 220         return alloc_lreg (cfg);
 221 }
 222
 223 guint32
 224 mono_alloc_freg (MonoCompile *cfg)
 225 {
 226         return alloc_freg (cfg);
 227 }
 228
 229 guint32
 230 mono_alloc_preg (MonoCompile *cfg)
 231 {
 232         return alloc_preg (cfg);
 233 }
 234
 235 guint32
 236 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 237 {
 238         return alloc_dreg (cfg, stack_type);
 239 }
 240
 241 /*
 242  * mono_alloc_ireg_ref:
 243  *
 244  *   Allocate an IREG, and mark it as holding a GC ref.
 245  */
 246 guint32
 247 mono_alloc_ireg_ref (MonoCompile *cfg)
 248 {
 249         return alloc_ireg_ref (cfg);
 250 }
 251
 252 /*
 253  * mono_alloc_ireg_mp:
 254  *
 255  *   Allocate an IREG, and mark it as holding a managed pointer.
 256  */
 257 guint32
 258 mono_alloc_ireg_mp (MonoCompile *cfg)
 259 {
 260         return alloc_ireg_mp (cfg);
 261 }
 262
 263 /*
 264  * mono_alloc_ireg_copy:
 265  *
 266  *   Allocate an IREG with the same GC type as VREG.
 267  */
 268 guint32
 269 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 270 {
 271         if (vreg_is_ref (cfg, vreg))
 272                 return alloc_ireg_ref (cfg);
 273         else if (vreg_is_mp (cfg, vreg))
 274                 return alloc_ireg_mp (cfg);
 275         else
 276                 return alloc_ireg (cfg);
 277 }
 278
 279 guint
 280 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 281 {
 282         if (type->byref)
 283                 return OP_MOVE;
 284
 285         type = mini_get_underlying_type (type);
 286 handle_enum:
 287         switch (type->type) {
 288         case MONO_TYPE_I1:
 289         case MONO_TYPE_U1:
 290                 return OP_MOVE;
 291         case MONO_TYPE_I2:
 292         case MONO_TYPE_U2:
 293                 return OP_MOVE;
 294         case MONO_TYPE_I4:
 295         case MONO_TYPE_U4:
 296                 return OP_MOVE;
 297         case MONO_TYPE_I:
 298         case MONO_TYPE_U:
 299         case MONO_TYPE_PTR:
 300         case MONO_TYPE_FNPTR:
 301                 return OP_MOVE;
 302         case MONO_TYPE_CLASS:
 303         case MONO_TYPE_STRING:
 304         case MONO_TYPE_OBJECT:
 305         case MONO_TYPE_SZARRAY:
 306         case MONO_TYPE_ARRAY:
 307                 return OP_MOVE;
 308         case MONO_TYPE_I8:
 309         case MONO_TYPE_U8:
 310 #if SIZEOF_REGISTER == 8
 311                 return OP_MOVE;
 312 #else
 313                 return OP_LMOVE;
 314 #endif
 315         case MONO_TYPE_R4:
 316                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 317         case MONO_TYPE_R8:
 318                 return OP_FMOVE;
 319         case MONO_TYPE_VALUETYPE:
 320                 if (type->data.klass->enumtype) {
 321                         type = mono_class_enum_basetype (type->data.klass);
 322                         goto handle_enum;
 323                 }
 324                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 325                         return OP_XMOVE;
 326                 return OP_VMOVE;
 327         case MONO_TYPE_TYPEDBYREF:
 328                 return OP_VMOVE;
 329         case MONO_TYPE_GENERICINST:
 330                 type = &type->data.generic_class->container_class->byval_arg;
 331                 goto handle_enum;
 332         case MONO_TYPE_VAR:
 333         case MONO_TYPE_MVAR:
 334                 g_assert (cfg->gshared);
 335                 if (mini_type_var_is_vt (type))
 336                         return OP_VMOVE;
 337                 else
 338                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 339         default:
 340                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 341         }
 342         return -1;
 343 }
 344
 345 void
 346 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 347 {
 348         int i;
 349         MonoInst *tree;
 350
 351         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 352         for (i = 0; i < bb->in_count; ++i)
 353                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 354         printf (", OUT: ");
 355         for (i = 0; i < bb->out_count; ++i)
 356                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 357         printf (" ]\n");
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_thunk = mono_create_icall_signature ("ptr ptr ptr");
 368 }
 369
 370 static MONO_NEVER_INLINE void
 371 break_on_unverified (void)
 372 {
 373         if (mini_get_debug_options ()->break_on_unverified)
 374                 G_BREAKPOINT ();
 375 }
 376
 377 static MONO_NEVER_INLINE void
 378 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 379 {
 380         char *method_fname = mono_method_full_name (method, TRUE);
 381         char *field_fname = mono_field_full_name (field);
 382         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 383         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 384         g_free (method_fname);
 385         g_free (field_fname);
 386 }
 387
 388 static MONO_NEVER_INLINE void
 389 inline_failure (MonoCompile *cfg, const char *msg)
 390 {
 391         if (cfg->verbose_level >= 2)
 392                 printf ("inline failed: %s\n", msg);
 393         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 394 }
 395
 396 static MONO_NEVER_INLINE void
 397 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 398 {
 399         if (cfg->verbose_level > 2)                                                                                     \
 400                 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), line);
 401         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 402 }
 403
 404 static MONO_NEVER_INLINE void
 405 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 406 {
 407         cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), file, line);
 408         if (cfg->verbose_level >= 2)
 409                 printf ("%s\n", cfg->exception_message);
 410         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 411 }
 412
 413 /*
 414  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 415  * foo<T> (int i) { ldarg.0; box T; }
 416  */
 417 #define UNVERIFIED do { \
 418         if (cfg->gsharedvt) { \
 419                 if (cfg->verbose_level > 2)                                                                     \
 420                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 421                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 422                 goto exception_exit;                                                                                    \
 423         }                                                                                                                                       \
 424         break_on_unverified ();                                                                                         \
 425         goto unverified;                                                                                                        \
 426 } while (0)
 427
 428 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 429                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 430                 if (!(tblock)) {        \
 431                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 432             NEW_BBLOCK (cfg, (tblock)); \
 433                         (tblock)->cil_code = (ip);      \
 434                         ADD_BBLOCK (cfg, (tblock));     \
 435                 } \
 436         } while (0)
 437
 438 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 439 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 440                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 441                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 442                 (dest)->sreg1 = (sr1); \
 443                 (dest)->sreg2 = (sr2); \
 444                 (dest)->inst_imm = (imm); \
 445                 (dest)->backend.shift_amount = (shift); \
 446                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 447         } while (0)
 448 #endif
 449
 450 /* Emit conversions so both operands of a binary opcode are of the same type */
 451 static void
 452 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 453 {
 454         MonoInst *arg1 = *arg1_ref;
 455         MonoInst *arg2 = *arg2_ref;
 456
 457         if (cfg->r4fp &&
 458                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 459                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 460                 MonoInst *conv;
 461
 462                 /* Mixing r4/r8 is allowed by the spec */
 463                 if (arg1->type == STACK_R4) {
 464                         int dreg = alloc_freg (cfg);
 465
 466                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 467                         conv->type = STACK_R8;
 468                         ins->sreg1 = dreg;
 469                         *arg1_ref = conv;
 470                 }
 471                 if (arg2->type == STACK_R4) {
 472                         int dreg = alloc_freg (cfg);
 473
 474                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 475                         conv->type = STACK_R8;
 476                         ins->sreg2 = dreg;
 477                         *arg2_ref = conv;
 478                 }
 479         }
 480
 481 #if SIZEOF_REGISTER == 8
 482         /* FIXME: Need to add many more cases */
 483         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 484                 MonoInst *widen;
 485
 486                 int dr = alloc_preg (cfg);
 487                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 488                 (ins)->sreg2 = widen->dreg;
 489         }
 490 #endif
 491 }
 492
 493 #define ADD_BINOP(op) do {      \
 494                 MONO_INST_NEW (cfg, ins, (op)); \
 495                 sp -= 2;        \
 496                 ins->sreg1 = sp [0]->dreg;      \
 497                 ins->sreg2 = sp [1]->dreg;      \
 498                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 499                 CHECK_TYPE (ins);       \
 500                 /* Have to insert a widening op */               \
 501         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 502         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 503         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 504         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 505         } while (0)
 506
 507 #define ADD_UNOP(op) do {       \
 508                 MONO_INST_NEW (cfg, ins, (op)); \
 509                 sp--;   \
 510                 ins->sreg1 = sp [0]->dreg;      \
 511                 type_from_op (cfg, ins, sp [0], NULL);  \
 512                 CHECK_TYPE (ins);       \
 513         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 514         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 515                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 516         } while (0)
 517
 518 #define ADD_BINCOND(next_block) do {    \
 519                 MonoInst *cmp;  \
 520                 sp -= 2; \
 521                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 522                 cmp->sreg1 = sp [0]->dreg;      \
 523                 cmp->sreg2 = sp [1]->dreg;      \
 524                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 525                 CHECK_TYPE (cmp);       \
 526                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 527                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 528                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 529                 GET_BBLOCK (cfg, tblock, target);               \
 530                 link_bblock (cfg, cfg->cbb, tblock);    \
 531                 ins->inst_true_bb = tblock;     \
 532                 if ((next_block)) {     \
 533                         link_bblock (cfg, cfg->cbb, (next_block));      \
 534                         ins->inst_false_bb = (next_block);      \
 535                         start_new_bblock = 1;   \
 536                 } else {        \
 537                         GET_BBLOCK (cfg, tblock, ip);           \
 538                         link_bblock (cfg, cfg->cbb, tblock);    \
 539                         ins->inst_false_bb = tblock;    \
 540                         start_new_bblock = 2;   \
 541                 }       \
 542                 if (sp != stack_start) {                                                                        \
 543                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 544                         CHECK_UNVERIFIABLE (cfg); \
 545                 } \
 546         MONO_ADD_INS (cfg->cbb, cmp); \
 547                 MONO_ADD_INS (cfg->cbb, ins);   \
 548         } while (0)
 549
 550 /* *
 551  * link_bblock: Links two basic blocks
 552  *
 553  * links two basic blocks in the control flow graph, the 'from'
 554  * argument is the starting block and the 'to' argument is the block
 555  * the control flow ends to after 'from'.
 556  */
 557 static void
 558 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 559 {
 560         MonoBasicBlock **newa;
 561         int i, found;
 562
 563 #if 0
 564         if (from->cil_code) {
 565                 if (to->cil_code)
 566                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 567                 else
 568                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 569         } else {
 570                 if (to->cil_code)
 571                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 572                 else
 573                         printf ("edge from entry to exit\n");
 574         }
 575 #endif
 576
 577         found = FALSE;
 578         for (i = 0; i < from->out_count; ++i) {
 579                 if (to == from->out_bb [i]) {
 580                         found = TRUE;
 581                         break;
 582                 }
 583         }
 584         if (!found) {
 585                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 586                 for (i = 0; i < from->out_count; ++i) {
 587                         newa [i] = from->out_bb [i];
 588                 }
 589                 newa [i] = to;
 590                 from->out_count++;
 591                 from->out_bb = newa;
 592         }
 593
 594         found = FALSE;
 595         for (i = 0; i < to->in_count; ++i) {
 596                 if (from == to->in_bb [i]) {
 597                         found = TRUE;
 598                         break;
 599                 }
 600         }
 601         if (!found) {
 602                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 603                 for (i = 0; i < to->in_count; ++i) {
 604                         newa [i] = to->in_bb [i];
 605                 }
 606                 newa [i] = from;
 607                 to->in_count++;
 608                 to->in_bb = newa;
 609         }
 610 }
 611
 612 void
 613 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 614 {
 615         link_bblock (cfg, from, to);
 616 }
 617
 618 /**
 619  * mono_find_block_region:
 620  *
 621  *   We mark each basic block with a region ID. We use that to avoid BB
 622  *   optimizations when blocks are in different regions.
 623  *
 624  * Returns:
 625  *   A region token that encodes where this region is, and information
 626  *   about the clause owner for this block.
 627  *
 628  *   The region encodes the try/catch/filter clause that owns this block
 629  *   as well as the type.  -1 is a special value that represents a block
 630  *   that is in none of try/catch/filter.
 631  */
 632 static int
 633 mono_find_block_region (MonoCompile *cfg, int offset)
 634 {
 635         MonoMethodHeader *header = cfg->header;
 636         MonoExceptionClause *clause;
 637         int i;
 638
 639         for (i = 0; i < header->num_clauses; ++i) {
 640                 clause = &header->clauses [i];
 641                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 642                     (offset < (clause->handler_offset)))
 643                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 644
 645                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 646                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 647                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 648                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 649                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 650                         else
 651                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 652                 }
 653         }
 654         for (i = 0; i < header->num_clauses; ++i) {
 655                 clause = &header->clauses [i];
 656
 657                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 658                         return ((i + 1) << 8) | clause->flags;
 659         }
 660
 661         return -1;
 662 }
 663
 664 static GList*
 665 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 666 {
 667         MonoMethodHeader *header = cfg->header;
 668         MonoExceptionClause *clause;
 669         int i;
 670         GList *res = NULL;
 671
 672         for (i = 0; i < header->num_clauses; ++i) {
 673                 clause = &header->clauses [i];
 674                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 675                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 676                         if (clause->flags == type)
 677                                 res = g_list_append (res, clause);
 678                 }
 679         }
 680         return res;
 681 }
 682
 683 static void
 684 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 685 {
 686         MonoInst *var;
 687
 688         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 689         if (var)
 690                 return;
 691
 692         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 693         /* prevent it from being register allocated */
 694         var->flags |= MONO_INST_VOLATILE;
 695
 696         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 697 }
 698
 699 MonoInst *
 700 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 701 {
 702         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 703 }
 704
 705 static MonoInst*
 706 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 707 {
 708         MonoInst *var;
 709
 710         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 711         if (var)
 712                 return var;
 713
 714         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 715         /* prevent it from being register allocated */
 716         var->flags |= MONO_INST_VOLATILE;
 717
 718         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 719
 720         return var;
 721 }
 722
 723 /*
 724  * Returns the type used in the eval stack when @type is loaded.
 725  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 726  */
 727 void
 728 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 729 {
 730         MonoClass *klass;
 731
 732         type = mini_get_underlying_type (type);
 733         inst->klass = klass = mono_class_from_mono_type (type);
 734         if (type->byref) {
 735                 inst->type = STACK_MP;
 736                 return;
 737         }
 738
 739 handle_enum:
 740         switch (type->type) {
 741         case MONO_TYPE_VOID:
 742                 inst->type = STACK_INV;
 743                 return;
 744         case MONO_TYPE_I1:
 745         case MONO_TYPE_U1:
 746         case MONO_TYPE_I2:
 747         case MONO_TYPE_U2:
 748         case MONO_TYPE_I4:
 749         case MONO_TYPE_U4:
 750                 inst->type = STACK_I4;
 751                 return;
 752         case MONO_TYPE_I:
 753         case MONO_TYPE_U:
 754         case MONO_TYPE_PTR:
 755         case MONO_TYPE_FNPTR:
 756                 inst->type = STACK_PTR;
 757                 return;
 758         case MONO_TYPE_CLASS:
 759         case MONO_TYPE_STRING:
 760         case MONO_TYPE_OBJECT:
 761         case MONO_TYPE_SZARRAY:
 762         case MONO_TYPE_ARRAY:
 763                 inst->type = STACK_OBJ;
 764                 return;
 765         case MONO_TYPE_I8:
 766         case MONO_TYPE_U8:
 767                 inst->type = STACK_I8;
 768                 return;
 769         case MONO_TYPE_R4:
 770                 inst->type = cfg->r4_stack_type;
 771                 break;
 772         case MONO_TYPE_R8:
 773                 inst->type = STACK_R8;
 774                 return;
 775         case MONO_TYPE_VALUETYPE:
 776                 if (type->data.klass->enumtype) {
 777                         type = mono_class_enum_basetype (type->data.klass);
 778                         goto handle_enum;
 779                 } else {
 780                         inst->klass = klass;
 781                         inst->type = STACK_VTYPE;
 782                         return;
 783                 }
 784         case MONO_TYPE_TYPEDBYREF:
 785                 inst->klass = mono_defaults.typed_reference_class;
 786                 inst->type = STACK_VTYPE;
 787                 return;
 788         case MONO_TYPE_GENERICINST:
 789                 type = &type->data.generic_class->container_class->byval_arg;
 790                 goto handle_enum;
 791         case MONO_TYPE_VAR:
 792         case MONO_TYPE_MVAR:
 793                 g_assert (cfg->gshared);
 794                 if (mini_is_gsharedvt_type (type)) {
 795                         g_assert (cfg->gsharedvt);
 796                         inst->type = STACK_VTYPE;
 797                 } else {
 798                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 799                 }
 800                 return;
 801         default:
 802                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 803         }
 804 }
 805
 806 /*
 807  * The following tables are used to quickly validate the IL code in type_from_op ().
 808  */
 809 static const char
 810 bin_num_table [STACK_MAX] [STACK_MAX] = {
 811         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 812         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 813         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 814         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 815         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 816         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 817         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 818         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 819         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 820 };
 821
 822 static const char
 823 neg_table [] = {
 824         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 825 };
 826
 827 /* reduce the size of this table */
 828 static const char
 829 bin_int_table [STACK_MAX] [STACK_MAX] = {
 830         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 831         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 832         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 837         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 838 };
 839
 840 static const char
 841 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 842 /*      Inv i  L  p  F  &  O  vt r4 */
 843         {0},
 844         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 845         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 846         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 847         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 848         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 849         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 850         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 851         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 852 };
 853
 854 /* reduce the size of this table */
 855 static const char
 856 shift_table [STACK_MAX] [STACK_MAX] = {
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 859         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 860         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 861         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 862         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 863         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 864         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 865 };
 866
 867 /*
 868  * Tables to map from the non-specific opcode to the matching
 869  * type-specific opcode.
 870  */
 871 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 872 static const guint16
 873 binops_op_map [STACK_MAX] = {
 874         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD, 0, 0, OP_RADD-CEE_ADD
 875 };
 876
 877 /* handles from CEE_NEG to CEE_CONV_U8 */
 878 static const guint16
 879 unops_op_map [STACK_MAX] = {
 880         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG, 0, 0, OP_RNEG-CEE_NEG
 881 };
 882
 883 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 884 static const guint16
 885 ovfops_op_map [STACK_MAX] = {
 886         0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, 0, OP_RCONV_TO_U2-CEE_CONV_U2
 887 };
 888
 889 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 890 static const guint16
 891 ovf2ops_op_map [STACK_MAX] = {
 892         0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, 0, 0, OP_RCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
 893 };
 894
 895 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 896 static const guint16
 897 ovf3ops_op_map [STACK_MAX] = {
 898         0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, 0, 0, OP_RCONV_TO_OVF_I1-CEE_CONV_OVF_I1
 899 };
 900
 901 /* handles from CEE_BEQ to CEE_BLT_UN */
 902 static const guint16
 903 beqops_op_map [STACK_MAX] = {
 904         0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, 0, OP_FBEQ-CEE_BEQ
 905 };
 906
 907 /* handles from CEE_CEQ to CEE_CLT_UN */
 908 static const guint16
 909 ceqops_op_map [STACK_MAX] = {
 910         0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, 0, OP_RCEQ-OP_CEQ
 911 };
 912
 913 /*
 914  * Sets ins->type (the type on the eval stack) according to the
 915  * type of the opcode and the arguments to it.
 916  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 917  *
 918  * FIXME: this function sets ins->type unconditionally in some cases, but
 919  * it should set it to invalid for some types (a conv.x on an object)
 920  */
 921 static void
 922 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 923 {
 924         switch (ins->opcode) {
 925         /* binops */
 926         case CEE_ADD:
 927         case CEE_SUB:
 928         case CEE_MUL:
 929         case CEE_DIV:
 930         case CEE_REM:
 931                 /* FIXME: check unverifiable args for STACK_MP */
 932                 ins->type = bin_num_table [src1->type] [src2->type];
 933                 ins->opcode += binops_op_map [ins->type];
 934                 break;
 935         case CEE_DIV_UN:
 936         case CEE_REM_UN:
 937         case CEE_AND:
 938         case CEE_OR:
 939         case CEE_XOR:
 940                 ins->type = bin_int_table [src1->type] [src2->type];
 941                 ins->opcode += binops_op_map [ins->type];
 942                 break;
 943         case CEE_SHL:
 944         case CEE_SHR:
 945         case CEE_SHR_UN:
 946                 ins->type = shift_table [src1->type] [src2->type];
 947                 ins->opcode += binops_op_map [ins->type];
 948                 break;
 949         case OP_COMPARE:
 950         case OP_LCOMPARE:
 951         case OP_ICOMPARE:
 952                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 953                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 954                         ins->opcode = OP_LCOMPARE;
 955                 else if (src1->type == STACK_R4)
 956                         ins->opcode = OP_RCOMPARE;
 957                 else if (src1->type == STACK_R8)
 958                         ins->opcode = OP_FCOMPARE;
 959                 else
 960                         ins->opcode = OP_ICOMPARE;
 961                 break;
 962         case OP_ICOMPARE_IMM:
 963                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 964                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 965                         ins->opcode = OP_LCOMPARE_IMM;
 966                 break;
 967         case CEE_BEQ:
 968         case CEE_BGE:
 969         case CEE_BGT:
 970         case CEE_BLE:
 971         case CEE_BLT:
 972         case CEE_BNE_UN:
 973         case CEE_BGE_UN:
 974         case CEE_BGT_UN:
 975         case CEE_BLE_UN:
 976         case CEE_BLT_UN:
 977                 ins->opcode += beqops_op_map [src1->type];
 978                 break;
 979         case OP_CEQ:
 980                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 981                 ins->opcode += ceqops_op_map [src1->type];
 982                 break;
 983         case OP_CGT:
 984         case OP_CGT_UN:
 985         case OP_CLT:
 986         case OP_CLT_UN:
 987                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
 988                 ins->opcode += ceqops_op_map [src1->type];
 989                 break;
 990         /* unops */
 991         case CEE_NEG:
 992                 ins->type = neg_table [src1->type];
 993                 ins->opcode += unops_op_map [ins->type];
 994                 break;
 995         case CEE_NOT:
 996                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
 997                         ins->type = src1->type;
 998                 else
 999                         ins->type = STACK_INV;
1000                 ins->opcode += unops_op_map [ins->type];
1001                 break;
1002         case CEE_CONV_I1:
1003         case CEE_CONV_I2:
1004         case CEE_CONV_I4:
1005         case CEE_CONV_U4:
1006                 ins->type = STACK_I4;
1007                 ins->opcode += unops_op_map [src1->type];
1008                 break;
1009         case CEE_CONV_R_UN:
1010                 ins->type = STACK_R8;
1011                 switch (src1->type) {
1012                 case STACK_I4:
1013                 case STACK_PTR:
1014                         ins->opcode = OP_ICONV_TO_R_UN;
1015                         break;
1016                 case STACK_I8:
1017                         ins->opcode = OP_LCONV_TO_R_UN;
1018                         break;
1019                 }
1020                 break;
1021         case CEE_CONV_OVF_I1:
1022         case CEE_CONV_OVF_U1:
1023         case CEE_CONV_OVF_I2:
1024         case CEE_CONV_OVF_U2:
1025         case CEE_CONV_OVF_I4:
1026         case CEE_CONV_OVF_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += ovf3ops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_OVF_I_UN:
1031         case CEE_CONV_OVF_U_UN:
1032                 ins->type = STACK_PTR;
1033                 ins->opcode += ovf2ops_op_map [src1->type];
1034                 break;
1035         case CEE_CONV_OVF_I1_UN:
1036         case CEE_CONV_OVF_I2_UN:
1037         case CEE_CONV_OVF_I4_UN:
1038         case CEE_CONV_OVF_U1_UN:
1039         case CEE_CONV_OVF_U2_UN:
1040         case CEE_CONV_OVF_U4_UN:
1041                 ins->type = STACK_I4;
1042                 ins->opcode += ovf2ops_op_map [src1->type];
1043                 break;
1044         case CEE_CONV_U:
1045                 ins->type = STACK_PTR;
1046                 switch (src1->type) {
1047                 case STACK_I4:
1048                         ins->opcode = OP_ICONV_TO_U;
1049                         break;
1050                 case STACK_PTR:
1051                 case STACK_MP:
1052 #if SIZEOF_VOID_P == 8
1053                         ins->opcode = OP_LCONV_TO_U;
1054 #else
1055                         ins->opcode = OP_MOVE;
1056 #endif
1057                         break;
1058                 case STACK_I8:
1059                         ins->opcode = OP_LCONV_TO_U;
1060                         break;
1061                 case STACK_R8:
1062                         ins->opcode = OP_FCONV_TO_U;
1063                         break;
1064                 }
1065                 break;
1066         case CEE_CONV_I8:
1067         case CEE_CONV_U8:
1068                 ins->type = STACK_I8;
1069                 ins->opcode += unops_op_map [src1->type];
1070                 break;
1071         case CEE_CONV_OVF_I8:
1072         case CEE_CONV_OVF_U8:
1073                 ins->type = STACK_I8;
1074                 ins->opcode += ovf3ops_op_map [src1->type];
1075                 break;
1076         case CEE_CONV_OVF_U8_UN:
1077         case CEE_CONV_OVF_I8_UN:
1078                 ins->type = STACK_I8;
1079                 ins->opcode += ovf2ops_op_map [src1->type];
1080                 break;
1081         case CEE_CONV_R4:
1082                 ins->type = cfg->r4_stack_type;
1083                 ins->opcode += unops_op_map [src1->type];
1084                 break;
1085         case CEE_CONV_R8:
1086                 ins->type = STACK_R8;
1087                 ins->opcode += unops_op_map [src1->type];
1088                 break;
1089         case OP_CKFINITE:
1090                 ins->type = STACK_R8;
1091                 break;
1092         case CEE_CONV_U2:
1093         case CEE_CONV_U1:
1094                 ins->type = STACK_I4;
1095                 ins->opcode += ovfops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_I:
1098         case CEE_CONV_OVF_I:
1099         case CEE_CONV_OVF_U:
1100                 ins->type = STACK_PTR;
1101                 ins->opcode += ovfops_op_map [src1->type];
1102                 break;
1103         case CEE_ADD_OVF:
1104         case CEE_ADD_OVF_UN:
1105         case CEE_MUL_OVF:
1106         case CEE_MUL_OVF_UN:
1107         case CEE_SUB_OVF:
1108         case CEE_SUB_OVF_UN:
1109                 ins->type = bin_num_table [src1->type] [src2->type];
1110                 ins->opcode += ovfops_op_map [src1->type];
1111                 if (ins->type == STACK_R8)
1112                         ins->type = STACK_INV;
1113                 break;
1114         case OP_LOAD_MEMBASE:
1115                 ins->type = STACK_PTR;
1116                 break;
1117         case OP_LOADI1_MEMBASE:
1118         case OP_LOADU1_MEMBASE:
1119         case OP_LOADI2_MEMBASE:
1120         case OP_LOADU2_MEMBASE:
1121         case OP_LOADI4_MEMBASE:
1122         case OP_LOADU4_MEMBASE:
1123                 ins->type = STACK_PTR;
1124                 break;
1125         case OP_LOADI8_MEMBASE:
1126                 ins->type = STACK_I8;
1127                 break;
1128         case OP_LOADR4_MEMBASE:
1129                 ins->type = cfg->r4_stack_type;
1130                 break;
1131         case OP_LOADR8_MEMBASE:
1132                 ins->type = STACK_R8;
1133                 break;
1134         default:
1135                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1136                 break;
1137         }
1138
1139         if (ins->type == STACK_MP)
1140                 ins->klass = mono_defaults.object_class;
1141 }
1142
1143 static const char
1144 ldind_type [] = {
1145         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1146 };
1147
1148 #if 0
1149
1150 static const char
1151 param_table [STACK_MAX] [STACK_MAX] = {
1152         {0},
1153 };
1154
1155 static int
1156 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1157 {
1158         int i;
1159
1160         if (sig->hasthis) {
1161                 switch (args->type) {
1162                 case STACK_I4:
1163                 case STACK_I8:
1164                 case STACK_R8:
1165                 case STACK_VTYPE:
1166                 case STACK_INV:
1167                         return 0;
1168                 }
1169                 args++;
1170         }
1171         for (i = 0; i < sig->param_count; ++i) {
1172                 switch (args [i].type) {
1173                 case STACK_INV:
1174                         return 0;
1175                 case STACK_MP:
1176                         if (!sig->params [i]->byref)
1177                                 return 0;
1178                         continue;
1179                 case STACK_OBJ:
1180                         if (sig->params [i]->byref)
1181                                 return 0;
1182                         switch (sig->params [i]->type) {
1183                         case MONO_TYPE_CLASS:
1184                         case MONO_TYPE_STRING:
1185                         case MONO_TYPE_OBJECT:
1186                         case MONO_TYPE_SZARRAY:
1187                         case MONO_TYPE_ARRAY:
1188                                 break;
1189                         default:
1190                                 return 0;
1191                         }
1192                         continue;
1193                 case STACK_R8:
1194                         if (sig->params [i]->byref)
1195                                 return 0;
1196                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1197                                 return 0;
1198                         continue;
1199                 case STACK_PTR:
1200                 case STACK_I4:
1201                 case STACK_I8:
1202                 case STACK_VTYPE:
1203                         break;
1204                 }
1205                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1206                         return 0;*/
1207         }
1208         return 1;
1209 }
1210 #endif
1211
1212 /*
1213  * When we need a pointer to the current domain many times in a method, we
1214  * call mono_domain_get() once and we store the result in a local variable.
1215  * This function returns the variable that represents the MonoDomain*.
1216  */
1217 inline static MonoInst *
1218 mono_get_domainvar (MonoCompile *cfg)
1219 {
1220         if (!cfg->domainvar)
1221                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1222         return cfg->domainvar;
1223 }
1224
1225 /*
1226  * The got_var contains the address of the Global Offset Table when AOT
1227  * compiling.
1228  */
1229 MonoInst *
1230 mono_get_got_var (MonoCompile *cfg)
1231 {
1232         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1233                 return NULL;
1234         if (!cfg->got_var) {
1235                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1236         }
1237         return cfg->got_var;
1238 }
1239
1240 static MonoInst *
1241 mono_get_vtable_var (MonoCompile *cfg)
1242 {
1243         g_assert (cfg->gshared);
1244
1245         if (!cfg->rgctx_var) {
1246                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1247                 /* force the var to be stack allocated */
1248                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1249         }
1250
1251         return cfg->rgctx_var;
1252 }
1253
1254 static MonoType*
1255 type_from_stack_type (MonoInst *ins) {
1256         switch (ins->type) {
1257         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1258         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1259         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1260         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1261         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1262         case STACK_MP:
1263                 return &ins->klass->this_arg;
1264         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1265         case STACK_VTYPE: return &ins->klass->byval_arg;
1266         default:
1267                 g_error ("stack type %d to monotype not handled\n", ins->type);
1268         }
1269         return NULL;
1270 }
1271
1272 static G_GNUC_UNUSED int
1273 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1274 {
1275         t = mono_type_get_underlying_type (t);
1276         switch (t->type) {
1277         case MONO_TYPE_I1:
1278         case MONO_TYPE_U1:
1279         case MONO_TYPE_I2:
1280         case MONO_TYPE_U2:
1281         case MONO_TYPE_I4:
1282         case MONO_TYPE_U4:
1283                 return STACK_I4;
1284         case MONO_TYPE_I:
1285         case MONO_TYPE_U:
1286         case MONO_TYPE_PTR:
1287         case MONO_TYPE_FNPTR:
1288                 return STACK_PTR;
1289         case MONO_TYPE_CLASS:
1290         case MONO_TYPE_STRING:
1291         case MONO_TYPE_OBJECT:
1292         case MONO_TYPE_SZARRAY:
1293         case MONO_TYPE_ARRAY:
1294                 return STACK_OBJ;
1295         case MONO_TYPE_I8:
1296         case MONO_TYPE_U8:
1297                 return STACK_I8;
1298         case MONO_TYPE_R4:
1299                 return cfg->r4_stack_type;
1300         case MONO_TYPE_R8:
1301                 return STACK_R8;
1302         case MONO_TYPE_VALUETYPE:
1303         case MONO_TYPE_TYPEDBYREF:
1304                 return STACK_VTYPE;
1305         case MONO_TYPE_GENERICINST:
1306                 if (mono_type_generic_inst_is_valuetype (t))
1307                         return STACK_VTYPE;
1308                 else
1309                         return STACK_OBJ;
1310                 break;
1311         default:
1312                 g_assert_not_reached ();
1313         }
1314
1315         return -1;
1316 }
1317
1318 static MonoClass*
1319 array_access_to_klass (int opcode)
1320 {
1321         switch (opcode) {
1322         case CEE_LDELEM_U1:
1323                 return mono_defaults.byte_class;
1324         case CEE_LDELEM_U2:
1325                 return mono_defaults.uint16_class;
1326         case CEE_LDELEM_I:
1327         case CEE_STELEM_I:
1328                 return mono_defaults.int_class;
1329         case CEE_LDELEM_I1:
1330         case CEE_STELEM_I1:
1331                 return mono_defaults.sbyte_class;
1332         case CEE_LDELEM_I2:
1333         case CEE_STELEM_I2:
1334                 return mono_defaults.int16_class;
1335         case CEE_LDELEM_I4:
1336         case CEE_STELEM_I4:
1337                 return mono_defaults.int32_class;
1338         case CEE_LDELEM_U4:
1339                 return mono_defaults.uint32_class;
1340         case CEE_LDELEM_I8:
1341         case CEE_STELEM_I8:
1342                 return mono_defaults.int64_class;
1343         case CEE_LDELEM_R4:
1344         case CEE_STELEM_R4:
1345                 return mono_defaults.single_class;
1346         case CEE_LDELEM_R8:
1347         case CEE_STELEM_R8:
1348                 return mono_defaults.double_class;
1349         case CEE_LDELEM_REF:
1350         case CEE_STELEM_REF:
1351                 return mono_defaults.object_class;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355         return NULL;
1356 }
1357
1358 /*
1359  * We try to share variables when possible
1360  */
1361 static MonoInst *
1362 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1363 {
1364         MonoInst *res;
1365         int pos, vnum;
1366
1367         /* inlining can result in deeper stacks */
1368         if (slot >= cfg->header->max_stack)
1369                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1370
1371         pos = ins->type - 1 + slot * STACK_MAX;
1372
1373         switch (ins->type) {
1374         case STACK_I4:
1375         case STACK_I8:
1376         case STACK_R8:
1377         case STACK_PTR:
1378         case STACK_MP:
1379         case STACK_OBJ:
1380                 if ((vnum = cfg->intvars [pos]))
1381                         return cfg->varinfo [vnum];
1382                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1383                 cfg->intvars [pos] = res->inst_c0;
1384                 break;
1385         default:
1386                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1387         }
1388         return res;
1389 }
1390
1391 static void
1392 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1393 {
1394         /*
1395          * Don't use this if a generic_context is set, since that means AOT can't
1396          * look up the method using just the image+token.
1397          * table == 0 means this is a reference made from a wrapper.
1398          */
1399         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1400                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1401                 jump_info_token->image = image;
1402                 jump_info_token->token = token;
1403                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1404         }
1405 }
1406
1407 /*
1408  * This function is called to handle items that are left on the evaluation stack
1409  * at basic block boundaries. What happens is that we save the values to local variables
1410  * and we reload them later when first entering the target basic block (with the
1411  * handle_loaded_temps () function).
1412  * A single joint point will use the same variables (stored in the array bb->out_stack or
1413  * bb->in_stack, if the basic block is before or after the joint point).
1414  *
1415  * This function needs to be called _before_ emitting the last instruction of
1416  * the bb (i.e. before emitting a branch).
1417  * If the stack merge fails at a join point, cfg->unverifiable is set.
1418  */
1419 static void
1420 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1421 {
1422         int i, bindex;
1423         MonoBasicBlock *bb = cfg->cbb;
1424         MonoBasicBlock *outb;
1425         MonoInst *inst, **locals;
1426         gboolean found;
1427
1428         if (!count)
1429                 return;
1430         if (cfg->verbose_level > 3)
1431                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1432         if (!bb->out_scount) {
1433                 bb->out_scount = count;
1434                 //printf ("bblock %d has out:", bb->block_num);
1435                 found = FALSE;
1436                 for (i = 0; i < bb->out_count; ++i) {
1437                         outb = bb->out_bb [i];
1438                         /* exception handlers are linked, but they should not be considered for stack args */
1439                         if (outb->flags & BB_EXCEPTION_HANDLER)
1440                                 continue;
1441                         //printf (" %d", outb->block_num);
1442                         if (outb->in_stack) {
1443                                 found = TRUE;
1444                                 bb->out_stack = outb->in_stack;
1445                                 break;
1446                         }
1447                 }
1448                 //printf ("\n");
1449                 if (!found) {
1450                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1451                         for (i = 0; i < count; ++i) {
1452                                 /*
1453                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1454                                  * stack slot and if they are of the same type.
1455                                  * This won't cause conflicts since if 'local' is used to
1456                                  * store one of the values in the in_stack of a bblock, then
1457                                  * the same variable will be used for the same outgoing stack
1458                                  * slot as well.
1459                                  * This doesn't work when inlining methods, since the bblocks
1460                                  * in the inlined methods do not inherit their in_stack from
1461                                  * the bblock they are inlined to. See bug #58863 for an
1462                                  * example.
1463                                  */
1464                                 if (cfg->inlined_method)
1465                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1466                                 else
1467                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1468                         }
1469                 }
1470         }
1471
1472         for (i = 0; i < bb->out_count; ++i) {
1473                 outb = bb->out_bb [i];
1474                 /* exception handlers are linked, but they should not be considered for stack args */
1475                 if (outb->flags & BB_EXCEPTION_HANDLER)
1476                         continue;
1477                 if (outb->in_scount) {
1478                         if (outb->in_scount != bb->out_scount) {
1479                                 cfg->unverifiable = TRUE;
1480                                 return;
1481                         }
1482                         continue; /* check they are the same locals */
1483                 }
1484                 outb->in_scount = count;
1485                 outb->in_stack = bb->out_stack;
1486         }
1487
1488         locals = bb->out_stack;
1489         cfg->cbb = bb;
1490         for (i = 0; i < count; ++i) {
1491                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1492                 inst->cil_code = sp [i]->cil_code;
1493                 sp [i] = locals [i];
1494                 if (cfg->verbose_level > 3)
1495                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1496         }
1497
1498         /*
1499          * It is possible that the out bblocks already have in_stack assigned, and
1500          * the in_stacks differ. In this case, we will store to all the different
1501          * in_stacks.
1502          */
1503
1504         found = TRUE;
1505         bindex = 0;
1506         while (found) {
1507                 /* Find a bblock which has a different in_stack */
1508                 found = FALSE;
1509                 while (bindex < bb->out_count) {
1510                         outb = bb->out_bb [bindex];
1511                         /* exception handlers are linked, but they should not be considered for stack args */
1512                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1513                                 bindex++;
1514                                 continue;
1515                         }
1516                         if (outb->in_stack != locals) {
1517                                 for (i = 0; i < count; ++i) {
1518                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1519                                         inst->cil_code = sp [i]->cil_code;
1520                                         sp [i] = locals [i];
1521                                         if (cfg->verbose_level > 3)
1522                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1523                                 }
1524                                 locals = outb->in_stack;
1525                                 found = TRUE;
1526                                 break;
1527                         }
1528                         bindex ++;
1529                 }
1530         }
1531 }
1532
1533 static MonoInst*
1534 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1535 {
1536         MonoInst *ins;
1537
1538         if (cfg->compile_aot) {
1539                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1540         } else {
1541                 MonoJumpInfo ji;
1542                 gpointer target;
1543                 MonoError error;
1544
1545                 ji.type = patch_type;
1546                 ji.data.target = data;
1547                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1548                 mono_error_assert_ok (&error);
1549
1550                 EMIT_NEW_PCONST (cfg, ins, target);
1551         }
1552         return ins;
1553 }
1554
1555 static void
1556 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1557 {
1558         int ibitmap_reg = alloc_preg (cfg);
1559 #ifdef COMPRESSED_INTERFACE_BITMAP
1560         MonoInst *args [2];
1561         MonoInst *res, *ins;
1562         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1563         MONO_ADD_INS (cfg->cbb, ins);
1564         args [0] = ins;
1565         args [1] = emit_runtime_constant (cfg, MONO_PATCH_INFO_IID, klass);
1566         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1567         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1568 #else
1569         int ibitmap_byte_reg = alloc_preg (cfg);
1570
1571         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1572
1573         if (cfg->compile_aot) {
1574                 int iid_reg = alloc_preg (cfg);
1575                 int shifted_iid_reg = alloc_preg (cfg);
1576                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1577                 int masked_iid_reg = alloc_preg (cfg);
1578                 int iid_one_bit_reg = alloc_preg (cfg);
1579                 int iid_bit_reg = alloc_preg (cfg);
1580                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1581                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1582                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1583                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1584                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1585                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1586                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1587                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1588         } else {
1589                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1590                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1591         }
1592 #endif
1593 }
1594
1595 /*
1596  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1597  * stored in "klass_reg" implements the interface "klass".
1598  */
1599 static void
1600 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1601 {
1602         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1603 }
1604
1605 /*
1606  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1607  * stored in "vtable_reg" implements the interface "klass".
1608  */
1609 static void
1610 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1611 {
1612         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1613 }
1614
1615 /*
1616  * Emit code which checks whenever the interface id of @klass is smaller than
1617  * than the value given by max_iid_reg.
1618 */
1619 static void
1620 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1621                                                  MonoBasicBlock *false_target)
1622 {
1623         if (cfg->compile_aot) {
1624                 int iid_reg = alloc_preg (cfg);
1625                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1626                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1627         }
1628         else
1629                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1630         if (false_target)
1631                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1632         else
1633                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1634 }
1635
1636 /* Same as above, but obtains max_iid from a vtable */
1637 static void
1638 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1639                                                                  MonoBasicBlock *false_target)
1640 {
1641         int max_iid_reg = alloc_preg (cfg);
1642
1643         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1644         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1645 }
1646
1647 /* Same as above, but obtains max_iid from a klass */
1648 static void
1649 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1650                                                                  MonoBasicBlock *false_target)
1651 {
1652         int max_iid_reg = alloc_preg (cfg);
1653
1654         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1655         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1656 }
1657
1658 static void
1659 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1660 {
1661         int idepth_reg = alloc_preg (cfg);
1662         int stypes_reg = alloc_preg (cfg);
1663         int stype = alloc_preg (cfg);
1664
1665         mono_class_setup_supertypes (klass);
1666
1667         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1668                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1669                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1670                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1671         }
1672         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1673         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1674         if (klass_ins) {
1675                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1676         } else if (cfg->compile_aot) {
1677                 int const_reg = alloc_preg (cfg);
1678                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1679                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1680         } else {
1681                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1682         }
1683         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1684 }
1685
1686 static void
1687 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1688 {
1689         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1690 }
1691
1692 static void
1693 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1694 {
1695         int intf_reg = alloc_preg (cfg);
1696
1697         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1698         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1699         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1700         if (true_target)
1701                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1702         else
1703                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1704 }
1705
1706 /*
1707  * Variant of the above that takes a register to the class, not the vtable.
1708  */
1709 static void
1710 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1711 {
1712         int intf_bit_reg = alloc_preg (cfg);
1713
1714         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1715         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1716         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1717         if (true_target)
1718                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1719         else
1720                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1721 }
1722
1723 static inline void
1724 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1725 {
1726         if (klass_inst) {
1727                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1728         } else {
1729                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
1730                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, ins->dreg);
1731         }
1732         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1733 }
1734
1735 static inline void
1736 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1737 {
1738         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1739 }
1740
1741 static inline void
1742 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1743 {
1744         if (cfg->compile_aot) {
1745                 int const_reg = alloc_preg (cfg);
1746                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1747                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1748         } else {
1749                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1750         }
1751         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1752 }
1753
1754 static void
1755 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1756
1757 static void
1758 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1759 {
1760         if (klass->rank) {
1761                 int rank_reg = alloc_preg (cfg);
1762                 int eclass_reg = alloc_preg (cfg);
1763
1764                 g_assert (!klass_inst);
1765                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1766                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1767                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1768                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1769                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1770                 if (klass->cast_class == mono_defaults.object_class) {
1771                         int parent_reg = alloc_preg (cfg);
1772                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1773                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1774                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1775                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1776                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1777                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1778                 } else if (klass->cast_class == mono_defaults.enum_class) {
1779                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1780                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1781                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1782                 } else {
1783                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1784                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1785                 }
1786
1787                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1788                         /* Check that the object is a vector too */
1789                         int bounds_reg = alloc_preg (cfg);
1790                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1791                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1792                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1793                 }
1794         } else {
1795                 int idepth_reg = alloc_preg (cfg);
1796                 int stypes_reg = alloc_preg (cfg);
1797                 int stype = alloc_preg (cfg);
1798
1799                 mono_class_setup_supertypes (klass);
1800
1801                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1802                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1803                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1804                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1805                 }
1806                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1807                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1808                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1809         }
1810 }
1811
1812 static void
1813 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1814 {
1815         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1816 }
1817
1818 static void
1819 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1820 {
1821         int val_reg;
1822
1823         g_assert (val == 0);
1824
1825         if (align == 0)
1826                 align = 4;
1827
1828         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1829                 switch (size) {
1830                 case 1:
1831                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1832                         return;
1833                 case 2:
1834                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1835                         return;
1836                 case 4:
1837                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1838                         return;
1839 #if SIZEOF_REGISTER == 8
1840                 case 8:
1841                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1842                         return;
1843 #endif
1844                 }
1845         }
1846
1847         val_reg = alloc_preg (cfg);
1848
1849         if (SIZEOF_REGISTER == 8)
1850                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1851         else
1852                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1853
1854         if (align < 4) {
1855                 /* This could be optimized further if neccesary */
1856                 while (size >= 1) {
1857                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1858                         offset += 1;
1859                         size -= 1;
1860                 }
1861                 return;
1862         }
1863
1864         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1865                 if (offset % 8) {
1866                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1867                         offset += 4;
1868                         size -= 4;
1869                 }
1870                 while (size >= 8) {
1871                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1872                         offset += 8;
1873                         size -= 8;
1874                 }
1875         }
1876
1877         while (size >= 4) {
1878                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1879                 offset += 4;
1880                 size -= 4;
1881         }
1882         while (size >= 2) {
1883                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1884                 offset += 2;
1885                 size -= 2;
1886         }
1887         while (size >= 1) {
1888                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1889                 offset += 1;
1890                 size -= 1;
1891         }
1892 }
1893
1894 void
1895 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1896 {
1897         int cur_reg;
1898
1899         if (align == 0)
1900                 align = 4;
1901
1902         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1903         g_assert (size < 10000);
1904
1905         if (align < 4) {
1906                 /* This could be optimized further if neccesary */
1907                 while (size >= 1) {
1908                         cur_reg = alloc_preg (cfg);
1909                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1910                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1911                         doffset += 1;
1912                         soffset += 1;
1913                         size -= 1;
1914                 }
1915         }
1916
1917         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1918                 while (size >= 8) {
1919                         cur_reg = alloc_preg (cfg);
1920                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1921                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1922                         doffset += 8;
1923                         soffset += 8;
1924                         size -= 8;
1925                 }
1926         }
1927
1928         while (size >= 4) {
1929                 cur_reg = alloc_preg (cfg);
1930                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1931                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1932                 doffset += 4;
1933                 soffset += 4;
1934                 size -= 4;
1935         }
1936         while (size >= 2) {
1937                 cur_reg = alloc_preg (cfg);
1938                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1939                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1940                 doffset += 2;
1941                 soffset += 2;
1942                 size -= 2;
1943         }
1944         while (size >= 1) {
1945                 cur_reg = alloc_preg (cfg);
1946                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1947                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1948                 doffset += 1;
1949                 soffset += 1;
1950                 size -= 1;
1951         }
1952 }
1953
1954 static void
1955 emit_tls_set (MonoCompile *cfg, int sreg1, MonoTlsKey tls_key)
1956 {
1957         MonoInst *ins, *c;
1958
1959         if (cfg->compile_aot) {
1960                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1961                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1962                 ins->sreg1 = sreg1;
1963                 ins->sreg2 = c->dreg;
1964                 MONO_ADD_INS (cfg->cbb, ins);
1965         } else {
1966                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1967                 ins->sreg1 = sreg1;
1968                 ins->inst_offset = mini_get_tls_offset (tls_key);
1969                 MONO_ADD_INS (cfg->cbb, ins);
1970         }
1971 }
1972
1973 /*
1974  * emit_push_lmf:
1975  *
1976  *   Emit IR to push the current LMF onto the LMF stack.
1977  */
1978 static void
1979 emit_push_lmf (MonoCompile *cfg)
1980 {
1981         /*
1982          * Emit IR to push the LMF:
1983          * lmf_addr = <lmf_addr from tls>
1984          * lmf->lmf_addr = lmf_addr
1985          * lmf->prev_lmf = *lmf_addr
1986          * *lmf_addr = lmf
1987          */
1988         int lmf_reg, prev_lmf_reg;
1989         MonoInst *ins, *lmf_ins;
1990
1991         if (!cfg->lmf_ir)
1992                 return;
1993
1994         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
1995                 /* Load current lmf */
1996                 lmf_ins = mono_get_lmf_intrinsic (cfg);
1997                 g_assert (lmf_ins);
1998                 MONO_ADD_INS (cfg->cbb, lmf_ins);
1999                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2000                 lmf_reg = ins->dreg;
2001                 /* Save previous_lmf */
2002                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2003                 /* Set new LMF */
2004                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2005         } else {
2006                 /*
2007                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2008                  */
2009                 if (!cfg->lmf_addr_var)
2010                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2011
2012 #ifdef HOST_WIN32
2013                 ins = mono_get_jit_tls_intrinsic (cfg);
2014                 if (ins) {
2015                         int jit_tls_dreg = ins->dreg;
2016
2017                         MONO_ADD_INS (cfg->cbb, ins);
2018                         lmf_reg = alloc_preg (cfg);
2019                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2020                 } else {
2021                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2022                 }
2023 #else
2024                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2025                 if (lmf_ins) {
2026                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2027                 } else {
2028 #ifdef TARGET_IOS
2029                         MonoInst *args [16], *jit_tls_ins, *ins;
2030
2031                         /* Inline mono_get_lmf_addr () */
2032                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2033
2034                         /* Load mono_jit_tls_id */
2035                         if (cfg->compile_aot)
2036                                 EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2037                         else
2038                                 EMIT_NEW_ICONST (cfg, args [0], mono_jit_tls_id);
2039                         /* call pthread_getspecific () */
2040                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2041                         /* lmf_addr = &jit_tls->lmf */
2042                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2043                         lmf_ins = ins;
2044 #else
2045                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2046 #endif
2047                 }
2048 #endif
2049                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2050
2051                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2052                 lmf_reg = ins->dreg;
2053
2054                 prev_lmf_reg = alloc_preg (cfg);
2055                 /* Save previous_lmf */
2056                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2057                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2058                 /* Set new lmf */
2059                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2060         }
2061 }
2062
2063 /*
2064  * emit_pop_lmf:
2065  *
2066  *   Emit IR to pop the current LMF from the LMF stack.
2067  */
2068 static void
2069 emit_pop_lmf (MonoCompile *cfg)
2070 {
2071         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2072         MonoInst *ins;
2073
2074         if (!cfg->lmf_ir)
2075                 return;
2076
2077         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2078         lmf_reg = ins->dreg;
2079
2080         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2081                 /* Load previous_lmf */
2082                 prev_lmf_reg = alloc_preg (cfg);
2083                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2084                 /* Set new LMF */
2085                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2086         } else {
2087                 /*
2088                  * Emit IR to pop the LMF:
2089                  * *(lmf->lmf_addr) = lmf->prev_lmf
2090                  */
2091                 /* This could be called before emit_push_lmf () */
2092                 if (!cfg->lmf_addr_var)
2093                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2094                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2095
2096                 prev_lmf_reg = alloc_preg (cfg);
2097                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2098                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2099         }
2100 }
2101
2102 static void
2103 emit_instrumentation_call (MonoCompile *cfg, void *func)
2104 {
2105         MonoInst *iargs [1];
2106
2107         /*
2108          * Avoid instrumenting inlined methods since it can
2109          * distort profiling results.
2110          */
2111         if (cfg->method != cfg->current_method)
2112                 return;
2113
2114         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2115                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2116                 mono_emit_jit_icall (cfg, func, iargs);
2117         }
2118 }
2119
2120 static int
2121 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
2122 {
2123 handle_enum:
2124         type = mini_get_underlying_type (type);
2125         switch (type->type) {
2126         case MONO_TYPE_VOID:
2127                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2128         case MONO_TYPE_I1:
2129         case MONO_TYPE_U1:
2130         case MONO_TYPE_I2:
2131         case MONO_TYPE_U2:
2132         case MONO_TYPE_I4:
2133         case MONO_TYPE_U4:
2134                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2135         case MONO_TYPE_I:
2136         case MONO_TYPE_U:
2137         case MONO_TYPE_PTR:
2138         case MONO_TYPE_FNPTR:
2139                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2140         case MONO_TYPE_CLASS:
2141         case MONO_TYPE_STRING:
2142         case MONO_TYPE_OBJECT:
2143         case MONO_TYPE_SZARRAY:
2144         case MONO_TYPE_ARRAY:
2145                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2146         case MONO_TYPE_I8:
2147         case MONO_TYPE_U8:
2148                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2149         case MONO_TYPE_R4:
2150                 if (cfg->r4fp)
2151                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2152                 else
2153                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2154         case MONO_TYPE_R8:
2155                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2156         case MONO_TYPE_VALUETYPE:
2157                 if (type->data.klass->enumtype) {
2158                         type = mono_class_enum_basetype (type->data.klass);
2159                         goto handle_enum;
2160                 } else
2161                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2162         case MONO_TYPE_TYPEDBYREF:
2163                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2164         case MONO_TYPE_GENERICINST:
2165                 type = &type->data.generic_class->container_class->byval_arg;
2166                 goto handle_enum;
2167         case MONO_TYPE_VAR:
2168         case MONO_TYPE_MVAR:
2169                 /* gsharedvt */
2170                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2171         default:
2172                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2173         }
2174         return -1;
2175 }
2176
2177 //XXX this ignores if t is byref
2178 #define MONO_TYPE_IS_PRIMITIVE_SCALAR(t) ((((((t)->type >= MONO_TYPE_BOOLEAN && (t)->type <= MONO_TYPE_U8) || ((t)->type >= MONO_TYPE_I && (t)->type <= MONO_TYPE_U)))))
2179
2180 /*
2181  * target_type_is_incompatible:
2182  * @cfg: MonoCompile context
2183  *
2184  * Check that the item @arg on the evaluation stack can be stored
2185  * in the target type (can be a local, or field, etc).
2186  * The cfg arg can be used to check if we need verification or just
2187  * validity checks.
2188  *
2189  * Returns: non-0 value if arg can't be stored on a target.
2190  */
2191 static int
2192 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2193 {
2194         MonoType *simple_type;
2195         MonoClass *klass;
2196
2197         if (target->byref) {
2198                 /* FIXME: check that the pointed to types match */
2199                 if (arg->type == STACK_MP) {
2200                         if (cfg->verbose_level) printf ("ok\n");
2201                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
2202                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
2203                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
2204
2205                         /* if the target is native int& or same type */
2206                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
2207                                 return 0;
2208
2209                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
2210                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
2211                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
2212                                 return 0;
2213                         return 1;
2214                 }
2215                 if (arg->type == STACK_PTR)
2216                         return 0;
2217                 return 1;
2218         }
2219
2220         simple_type = mini_get_underlying_type (target);
2221         switch (simple_type->type) {
2222         case MONO_TYPE_VOID:
2223                 return 1;
2224         case MONO_TYPE_I1:
2225         case MONO_TYPE_U1:
2226         case MONO_TYPE_I2:
2227         case MONO_TYPE_U2:
2228         case MONO_TYPE_I4:
2229         case MONO_TYPE_U4:
2230                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2231                         return 1;
2232                 return 0;
2233         case MONO_TYPE_PTR:
2234                 /* STACK_MP is needed when setting pinned locals */
2235                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2236                         return 1;
2237                 return 0;
2238         case MONO_TYPE_I:
2239         case MONO_TYPE_U:
2240         case MONO_TYPE_FNPTR:
2241                 /*
2242                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2243                  * in native int. (#688008).
2244                  */
2245                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2246                         return 1;
2247                 return 0;
2248         case MONO_TYPE_CLASS:
2249         case MONO_TYPE_STRING:
2250         case MONO_TYPE_OBJECT:
2251         case MONO_TYPE_SZARRAY:
2252         case MONO_TYPE_ARRAY:
2253                 if (arg->type != STACK_OBJ)
2254                         return 1;
2255                 /* FIXME: check type compatibility */
2256                 return 0;
2257         case MONO_TYPE_I8:
2258         case MONO_TYPE_U8:
2259                 if (arg->type != STACK_I8)
2260                         return 1;
2261                 return 0;
2262         case MONO_TYPE_R4:
2263                 if (arg->type != cfg->r4_stack_type)
2264                         return 1;
2265                 return 0;
2266         case MONO_TYPE_R8:
2267                 if (arg->type != STACK_R8)
2268                         return 1;
2269                 return 0;
2270         case MONO_TYPE_VALUETYPE:
2271                 if (arg->type != STACK_VTYPE)
2272                         return 1;
2273                 klass = mono_class_from_mono_type (simple_type);
2274                 if (klass != arg->klass)
2275                         return 1;
2276                 return 0;
2277         case MONO_TYPE_TYPEDBYREF:
2278                 if (arg->type != STACK_VTYPE)
2279                         return 1;
2280                 klass = mono_class_from_mono_type (simple_type);
2281                 if (klass != arg->klass)
2282                         return 1;
2283                 return 0;
2284         case MONO_TYPE_GENERICINST:
2285                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2286                         MonoClass *target_class;
2287                         if (arg->type != STACK_VTYPE)
2288                                 return 1;
2289                         klass = mono_class_from_mono_type (simple_type);
2290                         target_class = mono_class_from_mono_type (target);
2291                         /* The second cases is needed when doing partial sharing */
2292                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2293                                 return 1;
2294                         return 0;
2295                 } else {
2296                         if (arg->type != STACK_OBJ)
2297                                 return 1;
2298                         /* FIXME: check type compatibility */
2299                         return 0;
2300                 }
2301         case MONO_TYPE_VAR:
2302         case MONO_TYPE_MVAR:
2303                 g_assert (cfg->gshared);
2304                 if (mini_type_var_is_vt (simple_type)) {
2305                         if (arg->type != STACK_VTYPE)
2306                                 return 1;
2307                 } else {
2308                         if (arg->type != STACK_OBJ)
2309                                 return 1;
2310                 }
2311                 return 0;
2312         default:
2313                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2314         }
2315         return 1;
2316 }
2317
2318 /*
2319  * Prepare arguments for passing to a function call.
2320  * Return a non-zero value if the arguments can't be passed to the given
2321  * signature.
2322  * The type checks are not yet complete and some conversions may need
2323  * casts on 32 or 64 bit architectures.
2324  *
2325  * FIXME: implement this using target_type_is_incompatible ()
2326  */
2327 static int
2328 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2329 {
2330         MonoType *simple_type;
2331         int i;
2332
2333         if (sig->hasthis) {
2334                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2335                         return 1;
2336                 args++;
2337         }
2338         for (i = 0; i < sig->param_count; ++i) {
2339                 if (sig->params [i]->byref) {
2340                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2341                                 return 1;
2342                         continue;
2343                 }
2344                 simple_type = mini_get_underlying_type (sig->params [i]);
2345 handle_enum:
2346                 switch (simple_type->type) {
2347                 case MONO_TYPE_VOID:
2348                         return 1;
2349                         continue;
2350                 case MONO_TYPE_I1:
2351                 case MONO_TYPE_U1:
2352                 case MONO_TYPE_I2:
2353                 case MONO_TYPE_U2:
2354                 case MONO_TYPE_I4:
2355                 case MONO_TYPE_U4:
2356                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2357                                 return 1;
2358                         continue;
2359                 case MONO_TYPE_I:
2360                 case MONO_TYPE_U:
2361                 case MONO_TYPE_PTR:
2362                 case MONO_TYPE_FNPTR:
2363                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2364                                 return 1;
2365                         continue;
2366                 case MONO_TYPE_CLASS:
2367                 case MONO_TYPE_STRING:
2368                 case MONO_TYPE_OBJECT:
2369                 case MONO_TYPE_SZARRAY:
2370                 case MONO_TYPE_ARRAY:
2371                         if (args [i]->type != STACK_OBJ)
2372                                 return 1;
2373                         continue;
2374                 case MONO_TYPE_I8:
2375                 case MONO_TYPE_U8:
2376                         if (args [i]->type != STACK_I8)
2377                                 return 1;
2378                         continue;
2379                 case MONO_TYPE_R4:
2380                         if (args [i]->type != cfg->r4_stack_type)
2381                                 return 1;
2382                         continue;
2383                 case MONO_TYPE_R8:
2384                         if (args [i]->type != STACK_R8)
2385                                 return 1;
2386                         continue;
2387                 case MONO_TYPE_VALUETYPE:
2388                         if (simple_type->data.klass->enumtype) {
2389                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2390                                 goto handle_enum;
2391                         }
2392                         if (args [i]->type != STACK_VTYPE)
2393                                 return 1;
2394                         continue;
2395                 case MONO_TYPE_TYPEDBYREF:
2396                         if (args [i]->type != STACK_VTYPE)
2397                                 return 1;
2398                         continue;
2399                 case MONO_TYPE_GENERICINST:
2400                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2401                         goto handle_enum;
2402                 case MONO_TYPE_VAR:
2403                 case MONO_TYPE_MVAR:
2404                         /* gsharedvt */
2405                         if (args [i]->type != STACK_VTYPE)
2406                                 return 1;
2407                         continue;
2408                 default:
2409                         g_error ("unknown type 0x%02x in check_call_signature",
2410                                  simple_type->type);
2411                 }
2412         }
2413         return 0;
2414 }
2415
2416 static int
2417 callvirt_to_call (int opcode)
2418 {
2419         switch (opcode) {
2420         case OP_CALL_MEMBASE:
2421                 return OP_CALL;
2422         case OP_VOIDCALL_MEMBASE:
2423                 return OP_VOIDCALL;
2424         case OP_FCALL_MEMBASE:
2425                 return OP_FCALL;
2426         case OP_RCALL_MEMBASE:
2427                 return OP_RCALL;
2428         case OP_VCALL_MEMBASE:
2429                 return OP_VCALL;
2430         case OP_LCALL_MEMBASE:
2431                 return OP_LCALL;
2432         default:
2433                 g_assert_not_reached ();
2434         }
2435
2436         return -1;
2437 }
2438
2439 static int
2440 callvirt_to_call_reg (int opcode)
2441 {
2442         switch (opcode) {
2443         case OP_CALL_MEMBASE:
2444                 return OP_CALL_REG;
2445         case OP_VOIDCALL_MEMBASE:
2446                 return OP_VOIDCALL_REG;
2447         case OP_FCALL_MEMBASE:
2448                 return OP_FCALL_REG;
2449         case OP_RCALL_MEMBASE:
2450                 return OP_RCALL_REG;
2451         case OP_VCALL_MEMBASE:
2452                 return OP_VCALL_REG;
2453         case OP_LCALL_MEMBASE:
2454                 return OP_LCALL_REG;
2455         default:
2456                 g_assert_not_reached ();
2457         }
2458
2459         return -1;
2460 }
2461
2462 /* Either METHOD or IMT_ARG needs to be set */
2463 static void
2464 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2465 {
2466         int method_reg;
2467
2468         if (COMPILE_LLVM (cfg)) {
2469                 if (imt_arg) {
2470                         method_reg = alloc_preg (cfg);
2471                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2472                 } else {
2473                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2474                         method_reg = ins->dreg;
2475                 }
2476
2477 #ifdef ENABLE_LLVM
2478                 call->imt_arg_reg = method_reg;
2479 #endif
2480                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2481                 return;
2482         }
2483
2484         if (imt_arg) {
2485                 method_reg = alloc_preg (cfg);
2486                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2487         } else {
2488                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2489                 method_reg = ins->dreg;
2490         }
2491
2492         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2493 }
2494
2495 static MonoJumpInfo *
2496 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2497 {
2498         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2499
2500         ji->ip.i = ip;
2501         ji->type = type;
2502         ji->data.target = target;
2503
2504         return ji;
2505 }
2506
2507 static int
2508 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2509 {
2510         if (cfg->gshared)
2511                 return mono_class_check_context_used (klass);
2512         else
2513                 return 0;
2514 }
2515
2516 static int
2517 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2518 {
2519         if (cfg->gshared)
2520                 return mono_method_check_context_used (method);
2521         else
2522                 return 0;
2523 }
2524
2525 /*
2526  * check_method_sharing:
2527  *
2528  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2529  */
2530 static void
2531 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2532 {
2533         gboolean pass_vtable = FALSE;
2534         gboolean pass_mrgctx = FALSE;
2535
2536         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2537                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2538                 gboolean sharable = FALSE;
2539
2540                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2541                         sharable = TRUE;
2542
2543                 /*
2544                  * Pass vtable iff target method might
2545                  * be shared, which means that sharing
2546                  * is enabled for its class and its
2547                  * context is sharable (and it's not a
2548                  * generic method).
2549                  */
2550                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2551                         pass_vtable = TRUE;
2552         }
2553
2554         if (mini_method_get_context (cmethod) &&
2555                 mini_method_get_context (cmethod)->method_inst) {
2556                 g_assert (!pass_vtable);
2557
2558                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2559                         pass_mrgctx = TRUE;
2560                 } else {
2561                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2562                                 pass_mrgctx = TRUE;
2563                 }
2564         }
2565
2566         if (out_pass_vtable)
2567                 *out_pass_vtable = pass_vtable;
2568         if (out_pass_mrgctx)
2569                 *out_pass_mrgctx = pass_mrgctx;
2570 }
2571
2572 inline static MonoCallInst *
2573 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2574                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2575 {
2576         MonoType *sig_ret;
2577         MonoCallInst *call;
2578 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2579         int i;
2580 #endif
2581
2582         if (cfg->llvm_only)
2583                 tail = FALSE;
2584
2585         if (tail) {
2586                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2587
2588                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2589         } else
2590                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2591
2592         call->args = args;
2593         call->signature = sig;
2594         call->rgctx_reg = rgctx;
2595         sig_ret = mini_get_underlying_type (sig->ret);
2596
2597         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2598
2599         if (tail) {
2600                 if (mini_type_is_vtype (sig_ret)) {
2601                         call->vret_var = cfg->vret_addr;
2602                         //g_assert_not_reached ();
2603                 }
2604         } else if (mini_type_is_vtype (sig_ret)) {
2605                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2606                 MonoInst *loada;
2607
2608                 temp->backend.is_pinvoke = sig->pinvoke;
2609
2610                 /*
2611                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2612                  * address of return value to increase optimization opportunities.
2613                  * Before vtype decomposition, the dreg of the call ins itself represents the
2614                  * fact the call modifies the return value. After decomposition, the call will
2615                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2616                  * will be transformed into an LDADDR.
2617                  */
2618                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2619                 loada->dreg = alloc_preg (cfg);
2620                 loada->inst_p0 = temp;
2621                 /* We reference the call too since call->dreg could change during optimization */
2622                 loada->inst_p1 = call;
2623                 MONO_ADD_INS (cfg->cbb, loada);
2624
2625                 call->inst.dreg = temp->dreg;
2626
2627                 call->vret_var = loada;
2628         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2629                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2630
2631 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2632         if (COMPILE_SOFT_FLOAT (cfg)) {
2633                 /*
2634                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2635                  * an icall, but that cannot be done during the call sequence since it would clobber
2636                  * the call registers + the stack. So we do it before emitting the call.
2637                  */
2638                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2639                         MonoType *t;
2640                         MonoInst *in = call->args [i];
2641
2642                         if (i >= sig->hasthis)
2643                                 t = sig->params [i - sig->hasthis];
2644                         else
2645                                 t = &mono_defaults.int_class->byval_arg;
2646                         t = mono_type_get_underlying_type (t);
2647
2648                         if (!t->byref && t->type == MONO_TYPE_R4) {
2649                                 MonoInst *iargs [1];
2650                                 MonoInst *conv;
2651
2652                                 iargs [0] = in;
2653                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2654
2655                                 /* The result will be in an int vreg */
2656                                 call->args [i] = conv;
2657                         }
2658                 }
2659         }
2660 #endif
2661
2662         call->need_unbox_trampoline = unbox_trampoline;
2663
2664 #ifdef ENABLE_LLVM
2665         if (COMPILE_LLVM (cfg))
2666                 mono_llvm_emit_call (cfg, call);
2667         else
2668                 mono_arch_emit_call (cfg, call);
2669 #else
2670         mono_arch_emit_call (cfg, call);
2671 #endif
2672
2673         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2674         cfg->flags |= MONO_CFG_HAS_CALLS;
2675
2676         return call;
2677 }
2678
2679 static void
2680 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2681 {
2682         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2683         cfg->uses_rgctx_reg = TRUE;
2684         call->rgctx_reg = TRUE;
2685 #ifdef ENABLE_LLVM
2686         call->rgctx_arg_reg = rgctx_reg;
2687 #endif
2688 }
2689
2690 inline static MonoInst*
2691 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2692 {
2693         MonoCallInst *call;
2694         MonoInst *ins;
2695         int rgctx_reg = -1;
2696         gboolean check_sp = FALSE;
2697
2698         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2699                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2700
2701                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2702                         check_sp = TRUE;
2703         }
2704
2705         if (rgctx_arg) {
2706                 rgctx_reg = mono_alloc_preg (cfg);
2707                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2708         }
2709
2710         if (check_sp) {
2711                 if (!cfg->stack_inbalance_var)
2712                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2713
2714                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2715                 ins->dreg = cfg->stack_inbalance_var->dreg;
2716                 MONO_ADD_INS (cfg->cbb, ins);
2717         }
2718
2719         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2720
2721         call->inst.sreg1 = addr->dreg;
2722
2723         if (imt_arg)
2724                 emit_imt_argument (cfg, call, NULL, imt_arg);
2725
2726         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2727
2728         if (check_sp) {
2729                 int sp_reg;
2730
2731                 sp_reg = mono_alloc_preg (cfg);
2732
2733                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2734                 ins->dreg = sp_reg;
2735                 MONO_ADD_INS (cfg->cbb, ins);
2736
2737                 /* Restore the stack so we don't crash when throwing the exception */
2738                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2739                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2740                 MONO_ADD_INS (cfg->cbb, ins);
2741
2742                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2743                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2744         }
2745
2746         if (rgctx_arg)
2747                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2748
2749         return (MonoInst*)call;
2750 }
2751
2752 static MonoInst*
2753 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2754
2755 static MonoInst*
2756 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2757 static MonoInst*
2758 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2759
2760 static MonoInst*
2761 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2762                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2763 {
2764 #ifndef DISABLE_REMOTING
2765         gboolean might_be_remote = FALSE;
2766 #endif
2767         gboolean virtual_ = this_ins != NULL;
2768         gboolean enable_for_aot = TRUE;
2769         int context_used;
2770         MonoCallInst *call;
2771         MonoInst *call_target = NULL;
2772         int rgctx_reg = 0;
2773         gboolean need_unbox_trampoline;
2774
2775         if (!sig)
2776                 sig = mono_method_signature (method);
2777
2778         if (cfg->llvm_only && (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE))
2779                 g_assert_not_reached ();
2780
2781         if (rgctx_arg) {
2782                 rgctx_reg = mono_alloc_preg (cfg);
2783                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2784         }
2785
2786         if (method->string_ctor) {
2787                 /* Create the real signature */
2788                 /* FIXME: Cache these */
2789                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2790                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2791
2792                 sig = ctor_sig;
2793         }
2794
2795         context_used = mini_method_check_context_used (cfg, method);
2796
2797 #ifndef DISABLE_REMOTING
2798         might_be_remote = this_ins && sig->hasthis &&
2799                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2800                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2801
2802         if (might_be_remote && context_used) {
2803                 MonoInst *addr;
2804
2805                 g_assert (cfg->gshared);
2806
2807                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2808
2809                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2810         }
2811 #endif
2812
2813         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2814                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2815
2816         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2817
2818         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2819
2820 #ifndef DISABLE_REMOTING
2821         if (might_be_remote)
2822                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2823         else
2824 #endif
2825                 call->method = method;
2826         call->inst.flags |= MONO_INST_HAS_METHOD;
2827         call->inst.inst_left = this_ins;
2828         call->tail_call = tail;
2829
2830         if (virtual_) {
2831                 int vtable_reg, slot_reg, this_reg;
2832                 int offset;
2833
2834                 this_reg = this_ins->dreg;
2835
2836                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2837                         MonoInst *dummy_use;
2838
2839                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2840
2841                         /* Make a call to delegate->invoke_impl */
2842                         call->inst.inst_basereg = this_reg;
2843                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2844                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2845
2846                         /* We must emit a dummy use here because the delegate trampoline will
2847                         replace the 'this' argument with the delegate target making this activation
2848                         no longer a root for the delegate.
2849                         This is an issue for delegates that target collectible code such as dynamic
2850                         methods of GC'able assemblies.
2851
2852                         For a test case look into #667921.
2853
2854                         FIXME: a dummy use is not the best way to do it as the local register allocator
2855                         will put it on a caller save register and spil it around the call.
2856                         Ideally, we would either put it on a callee save register or only do the store part.
2857                          */
2858                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2859
2860                         return (MonoInst*)call;
2861                 }
2862
2863                 if ((!cfg->compile_aot || enable_for_aot) &&
2864                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2865                          (MONO_METHOD_IS_FINAL (method) &&
2866                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2867                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2868                         /*
2869                          * the method is not virtual, we just need to ensure this is not null
2870                          * and then we can call the method directly.
2871                          */
2872 #ifndef DISABLE_REMOTING
2873                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2874                                 /*
2875                                  * The check above ensures method is not gshared, this is needed since
2876                                  * gshared methods can't have wrappers.
2877                                  */
2878                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2879                         }
2880 #endif
2881
2882                         if (!method->string_ctor)
2883                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2884
2885                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2886                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2887                         /*
2888                          * the method is virtual, but we can statically dispatch since either
2889                          * it's class or the method itself are sealed.
2890                          * But first we need to ensure it's not a null reference.
2891                          */
2892                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2893
2894                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2895                 } else if (call_target) {
2896                         vtable_reg = alloc_preg (cfg);
2897                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2898
2899                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2900                         call->inst.sreg1 = call_target->dreg;
2901                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2902                 } else {
2903                         vtable_reg = alloc_preg (cfg);
2904                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2905                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2906                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2907                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2908                                 slot_reg = vtable_reg;
2909                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2910                         } else {
2911                                 slot_reg = vtable_reg;
2912                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2913                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2914                                 if (imt_arg) {
2915                                         g_assert (mono_method_signature (method)->generic_param_count);
2916                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2917                                 }
2918                         }
2919
2920                         call->inst.sreg1 = slot_reg;
2921                         call->inst.inst_offset = offset;
2922                         call->is_virtual = TRUE;
2923                 }
2924         }
2925
2926         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2927
2928         if (rgctx_arg)
2929                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2930
2931         return (MonoInst*)call;
2932 }
2933
2934 MonoInst*
2935 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2936 {
2937         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2938 }
2939
2940 MonoInst*
2941 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2942                                            MonoInst **args)
2943 {
2944         MonoCallInst *call;
2945
2946         g_assert (sig);
2947
2948         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2949         call->fptr = func;
2950
2951         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2952
2953         return (MonoInst*)call;
2954 }
2955
2956 MonoInst*
2957 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2958 {
2959         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2960
2961         g_assert (info);
2962
2963         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2964 }
2965
2966 /*
2967  * mono_emit_abs_call:
2968  *
2969  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2970  */
2971 inline static MonoInst*
2972 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2973                                         MonoMethodSignature *sig, MonoInst **args)
2974 {
2975         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2976         MonoInst *ins;
2977
2978         /*
2979          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2980          * handle it.
2981          */
2982         if (cfg->abs_patches == NULL)
2983                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2984         g_hash_table_insert (cfg->abs_patches, ji, ji);
2985         ins = mono_emit_native_call (cfg, ji, sig, args);
2986         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2987         return ins;
2988 }
2989
2990 static MonoMethodSignature*
2991 sig_to_rgctx_sig (MonoMethodSignature *sig)
2992 {
2993         // FIXME: memory allocation
2994         MonoMethodSignature *res;
2995         int i;
2996
2997         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2998         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2999         res->param_count = sig->param_count + 1;
3000         for (i = 0; i < sig->param_count; ++i)
3001                 res->params [i] = sig->params [i];
3002         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
3003         return res;
3004 }
3005
3006 /* Make an indirect call to FSIG passing an additional argument */
3007 static MonoInst*
3008 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
3009 {
3010         MonoMethodSignature *csig;
3011         MonoInst *args_buf [16];
3012         MonoInst **args;
3013         int i, pindex, tmp_reg;
3014
3015         /* Make a call with an rgctx/extra arg */
3016         if (fsig->param_count + 2 < 16)
3017                 args = args_buf;
3018         else
3019                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
3020         pindex = 0;
3021         if (fsig->hasthis)
3022                 args [pindex ++] = orig_args [0];
3023         for (i = 0; i < fsig->param_count; ++i)
3024                 args [pindex ++] = orig_args [fsig->hasthis + i];
3025         tmp_reg = alloc_preg (cfg);
3026         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
3027         csig = sig_to_rgctx_sig (fsig);
3028         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
3029 }
3030
3031 /* Emit an indirect call to the function descriptor ADDR */
3032 static MonoInst*
3033 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
3034 {
3035         int addr_reg, arg_reg;
3036         MonoInst *call_target;
3037
3038         g_assert (cfg->llvm_only);
3039
3040         /*
3041          * addr points to a <addr, arg> pair, load both of them, and
3042          * make a call to addr, passing arg as an extra arg.
3043          */
3044         addr_reg = alloc_preg (cfg);
3045         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
3046         arg_reg = alloc_preg (cfg);
3047         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
3048
3049         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
3050 }
3051
3052 static gboolean
3053 direct_icalls_enabled (MonoCompile *cfg)
3054 {
3055         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3056 #ifdef TARGET_AMD64
3057         if (cfg->compile_llvm && !cfg->llvm_only)
3058                 return FALSE;
3059 #endif
3060         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
3061                 return FALSE;
3062         return TRUE;
3063 }
3064
3065 MonoInst*
3066 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
3067 {
3068         /*
3069          * Call the jit icall without a wrapper if possible.
3070          * The wrapper is needed for the following reasons:
3071          * - to handle exceptions thrown using mono_raise_exceptions () from the
3072          *   icall function. The EH code needs the lmf frame pushed by the
3073          *   wrapper to be able to unwind back to managed code.
3074          * - to be able to do stack walks for asynchronously suspended
3075          *   threads when debugging.
3076          */
3077         if (info->no_raise && direct_icalls_enabled (cfg)) {
3078                 char *name;
3079                 int costs;
3080
3081                 if (!info->wrapper_method) {
3082                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
3083                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
3084                         g_free (name);
3085                         mono_memory_barrier ();
3086                 }
3087
3088                 /*
3089                  * Inline the wrapper method, which is basically a call to the C icall, and
3090                  * an exception check.
3091                  */
3092                 costs = inline_method (cfg, info->wrapper_method, NULL,
3093                                                            args, NULL, il_offset, TRUE);
3094                 g_assert (costs > 0);
3095                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
3096
3097                 return args [0];
3098         } else {
3099                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3100         }
3101 }
3102
3103 static MonoInst*
3104 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3105 {
3106         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3107                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3108                         int widen_op = -1;
3109
3110                         /*
3111                          * Native code might return non register sized integers
3112                          * without initializing the upper bits.
3113                          */
3114                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3115                         case OP_LOADI1_MEMBASE:
3116                                 widen_op = OP_ICONV_TO_I1;
3117                                 break;
3118                         case OP_LOADU1_MEMBASE:
3119                                 widen_op = OP_ICONV_TO_U1;
3120                                 break;
3121                         case OP_LOADI2_MEMBASE:
3122                                 widen_op = OP_ICONV_TO_I2;
3123                                 break;
3124                         case OP_LOADU2_MEMBASE:
3125                                 widen_op = OP_ICONV_TO_U2;
3126                                 break;
3127                         default:
3128                                 break;
3129                         }
3130
3131                         if (widen_op != -1) {
3132                                 int dreg = alloc_preg (cfg);
3133                                 MonoInst *widen;
3134
3135                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3136                                 widen->type = ins->type;
3137                                 ins = widen;
3138                         }
3139                 }
3140         }
3141
3142         return ins;
3143 }
3144
3145
3146 static void
3147 emit_method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
3148 {
3149         MonoInst *args [16];
3150
3151         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (method), method, MONO_RGCTX_INFO_METHOD);
3152         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cil_method), cil_method, MONO_RGCTX_INFO_METHOD);
3153
3154         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
3155 }
3156
3157 static MonoMethod*
3158 get_memcpy_method (void)
3159 {
3160         static MonoMethod *memcpy_method = NULL;
3161         if (!memcpy_method) {
3162                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3163                 if (!memcpy_method)
3164                         g_error ("Old corlib found. Install a new one");
3165         }
3166         return memcpy_method;
3167 }
3168
3169 static void
3170 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3171 {
3172         MonoClassField *field;
3173         gpointer iter = NULL;
3174
3175         while ((field = mono_class_get_fields (klass, &iter))) {
3176                 int foffset;
3177
3178                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3179                         continue;
3180                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3181                 if (mini_type_is_reference (mono_field_get_type (field))) {
3182                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3183                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3184                 } else {
3185                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3186                         if (field_class->has_references)
3187                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3188                 }
3189         }
3190 }
3191
3192 static void
3193 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3194 {
3195         int card_table_shift_bits;
3196         gpointer card_table_mask;
3197         guint8 *card_table;
3198         MonoInst *dummy_use;
3199         int nursery_shift_bits;
3200         size_t nursery_size;
3201
3202         if (!cfg->gen_write_barriers)
3203                 return;
3204
3205         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3206
3207         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3208
3209         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3210                 MonoInst *wbarrier;
3211
3212                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3213                 wbarrier->sreg1 = ptr->dreg;
3214                 wbarrier->sreg2 = value->dreg;
3215                 MONO_ADD_INS (cfg->cbb, wbarrier);
3216         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3217                 int offset_reg = alloc_preg (cfg);
3218                 int card_reg;
3219                 MonoInst *ins;
3220
3221                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3222                 if (card_table_mask)
3223                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3224
3225                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3226                  * IMM's larger than 32bits.
3227                  */
3228                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3229                 card_reg = ins->dreg;
3230
3231                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3232                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3233         } else {
3234                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3235                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3236         }
3237
3238         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3239 }
3240
3241 static gboolean
3242 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3243 {
3244         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3245         unsigned need_wb = 0;
3246
3247         if (align == 0)
3248                 align = 4;
3249
3250         /*types with references can't have alignment smaller than sizeof(void*) */
3251         if (align < SIZEOF_VOID_P)
3252                 return FALSE;
3253
3254         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3255         if (size > 32 * SIZEOF_VOID_P)
3256                 return FALSE;
3257
3258         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3259
3260         /* We don't unroll more than 5 stores to avoid code bloat. */
3261         if (size > 5 * SIZEOF_VOID_P) {
3262                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3263                 size += (SIZEOF_VOID_P - 1);
3264                 size &= ~(SIZEOF_VOID_P - 1);
3265
3266                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3267                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3268                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3269                 return TRUE;
3270         }
3271
3272         destreg = iargs [0]->dreg;
3273         srcreg = iargs [1]->dreg;
3274         offset = 0;
3275
3276         dest_ptr_reg = alloc_preg (cfg);
3277         tmp_reg = alloc_preg (cfg);
3278
3279         /*tmp = dreg*/
3280         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3281
3282         while (size >= SIZEOF_VOID_P) {
3283                 MonoInst *load_inst;
3284                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3285                 load_inst->dreg = tmp_reg;
3286                 load_inst->inst_basereg = srcreg;
3287                 load_inst->inst_offset = offset;
3288                 MONO_ADD_INS (cfg->cbb, load_inst);
3289
3290                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3291
3292                 if (need_wb & 0x1)
3293                         emit_write_barrier (cfg, iargs [0], load_inst);
3294
3295                 offset += SIZEOF_VOID_P;
3296                 size -= SIZEOF_VOID_P;
3297                 need_wb >>= 1;
3298
3299                 /*tmp += sizeof (void*)*/
3300                 if (size >= SIZEOF_VOID_P) {
3301                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3302                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3303                 }
3304         }
3305
3306         /* Those cannot be references since size < sizeof (void*) */
3307         while (size >= 4) {
3308                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3309                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3310                 offset += 4;
3311                 size -= 4;
3312         }
3313
3314         while (size >= 2) {
3315                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3316                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3317                 offset += 2;
3318                 size -= 2;
3319         }
3320
3321         while (size >= 1) {
3322                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3323                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3324                 offset += 1;
3325                 size -= 1;
3326         }
3327
3328         return TRUE;
3329 }
3330
3331 /*
3332  * Emit code to copy a valuetype of type @klass whose address is stored in
3333  * @src->dreg to memory whose address is stored at @dest->dreg.
3334  */
3335 void
3336 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3337 {
3338         MonoInst *iargs [4];
3339         int n;
3340         guint32 align = 0;
3341         MonoMethod *memcpy_method;
3342         MonoInst *size_ins = NULL;
3343         MonoInst *memcpy_ins = NULL;
3344
3345         g_assert (klass);
3346         if (cfg->gshared)
3347                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3348
3349         /*
3350          * This check breaks with spilled vars... need to handle it during verification anyway.
3351          * g_assert (klass && klass == src->klass && klass == dest->klass);
3352          */
3353
3354         if (mini_is_gsharedvt_klass (klass)) {
3355                 g_assert (!native);
3356                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3357                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3358         }
3359
3360         if (native)
3361                 n = mono_class_native_size (klass, &align);
3362         else
3363                 n = mono_class_value_size (klass, &align);
3364
3365         /* if native is true there should be no references in the struct */
3366         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3367                 /* Avoid barriers when storing to the stack */
3368                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3369                           (dest->opcode == OP_LDADDR))) {
3370                         int context_used;
3371
3372                         iargs [0] = dest;
3373                         iargs [1] = src;
3374
3375                         context_used = mini_class_check_context_used (cfg, klass);
3376
3377                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3378                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3379                                 return;
3380                         } else if (context_used) {
3381                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3382                         }  else {
3383                                 iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3384                                 if (!cfg->compile_aot)
3385                                         mono_class_compute_gc_descriptor (klass);
3386                         }
3387
3388                         if (size_ins)
3389                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3390                         else
3391                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3392                         return;
3393                 }
3394         }
3395
3396         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3397                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3398                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3399         } else {
3400                 iargs [0] = dest;
3401                 iargs [1] = src;
3402                 if (size_ins)
3403                         iargs [2] = size_ins;
3404                 else
3405                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3406
3407                 memcpy_method = get_memcpy_method ();
3408                 if (memcpy_ins)
3409                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3410                 else
3411                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3412         }
3413 }
3414
3415 static MonoMethod*
3416 get_memset_method (void)
3417 {
3418         static MonoMethod *memset_method = NULL;
3419         if (!memset_method) {
3420                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3421                 if (!memset_method)
3422                         g_error ("Old corlib found. Install a new one");
3423         }
3424         return memset_method;
3425 }
3426
3427 void
3428 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3429 {
3430         MonoInst *iargs [3];
3431         int n;
3432         guint32 align;
3433         MonoMethod *memset_method;
3434         MonoInst *size_ins = NULL;
3435         MonoInst *bzero_ins = NULL;
3436         static MonoMethod *bzero_method;
3437
3438         /* FIXME: Optimize this for the case when dest is an LDADDR */
3439         mono_class_init (klass);
3440         if (mini_is_gsharedvt_klass (klass)) {
3441                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3442                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3443                 if (!bzero_method)
3444                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3445                 g_assert (bzero_method);
3446                 iargs [0] = dest;
3447                 iargs [1] = size_ins;
3448                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3449                 return;
3450         }
3451
3452         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3453
3454         n = mono_class_value_size (klass, &align);
3455
3456         if (n <= sizeof (gpointer) * 8) {
3457                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3458         }
3459         else {
3460                 memset_method = get_memset_method ();
3461                 iargs [0] = dest;
3462                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3463                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3464                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3465         }
3466 }
3467
3468 /*
3469  * emit_get_rgctx:
3470  *
3471  *   Emit IR to return either the this pointer for instance method,
3472  * or the mrgctx for static methods.
3473  */
3474 static MonoInst*
3475 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3476 {
3477         MonoInst *this_ins = NULL;
3478
3479         g_assert (cfg->gshared);
3480
3481         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3482                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3483                         !method->klass->valuetype)
3484                 EMIT_NEW_ARGLOAD (cfg, this_ins, 0);
3485
3486         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3487                 MonoInst *mrgctx_loc, *mrgctx_var;
3488
3489                 g_assert (!this_ins);
3490                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3491
3492                 mrgctx_loc = mono_get_vtable_var (cfg);
3493                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3494
3495                 return mrgctx_var;
3496         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3497                 MonoInst *vtable_loc, *vtable_var;
3498
3499                 g_assert (!this_ins);
3500
3501                 vtable_loc = mono_get_vtable_var (cfg);
3502                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3503
3504                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3505                         MonoInst *mrgctx_var = vtable_var;
3506                         int vtable_reg;
3507
3508                         vtable_reg = alloc_preg (cfg);
3509                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3510                         vtable_var->type = STACK_PTR;
3511                 }
3512
3513                 return vtable_var;
3514         } else {
3515                 MonoInst *ins;
3516                 int vtable_reg;
3517
3518                 vtable_reg = alloc_preg (cfg);
3519                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3520                 return ins;
3521         }
3522 }
3523
3524 static MonoJumpInfoRgctxEntry *
3525 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3526 {
3527         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3528         res->method = method;
3529         res->in_mrgctx = in_mrgctx;
3530         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3531         res->data->type = patch_type;
3532         res->data->data.target = patch_data;
3533         res->info_type = info_type;
3534
3535         return res;
3536 }
3537
3538 static inline MonoInst*
3539 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3540 {
3541         MonoInst *args [16];
3542         MonoInst *call;
3543
3544         // FIXME: No fastpath since the slot is not a compile time constant
3545         args [0] = rgctx;
3546         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3547         if (entry->in_mrgctx)
3548                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3549         else
3550                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3551         return call;
3552 #if 0
3553         /*
3554          * FIXME: This can be called during decompose, which is a problem since it creates
3555          * new bblocks.
3556          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3557          */
3558         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3559         gboolean mrgctx;
3560         MonoBasicBlock *is_null_bb, *end_bb;
3561         MonoInst *res, *ins, *call;
3562         MonoInst *args[16];
3563
3564         slot = mini_get_rgctx_entry_slot (entry);
3565
3566         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3567         index = MONO_RGCTX_SLOT_INDEX (slot);
3568         if (mrgctx)
3569                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3570         for (depth = 0; ; ++depth) {
3571                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3572
3573                 if (index < size - 1)
3574                         break;
3575                 index -= size - 1;
3576         }
3577
3578         NEW_BBLOCK (cfg, end_bb);
3579         NEW_BBLOCK (cfg, is_null_bb);
3580
3581         if (mrgctx) {
3582                 rgctx_reg = rgctx->dreg;
3583         } else {
3584                 rgctx_reg = alloc_preg (cfg);
3585
3586                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3587                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3588                 NEW_BBLOCK (cfg, is_null_bb);
3589
3590                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3591                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3592         }
3593
3594         for (i = 0; i < depth; ++i) {
3595                 int array_reg = alloc_preg (cfg);
3596
3597                 /* load ptr to next array */
3598                 if (mrgctx && i == 0)
3599                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3600                 else
3601                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3602                 rgctx_reg = array_reg;
3603                 /* is the ptr null? */
3604                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3605                 /* if yes, jump to actual trampoline */
3606                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3607         }
3608
3609         /* fetch slot */
3610         val_reg = alloc_preg (cfg);
3611         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3612         /* is the slot null? */
3613         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3614         /* if yes, jump to actual trampoline */
3615         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3616
3617         /* Fastpath */
3618         res_reg = alloc_preg (cfg);
3619         MONO_INST_NEW (cfg, ins, OP_MOVE);
3620         ins->dreg = res_reg;
3621         ins->sreg1 = val_reg;
3622         MONO_ADD_INS (cfg->cbb, ins);
3623         res = ins;
3624         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3625
3626         /* Slowpath */
3627         MONO_START_BB (cfg, is_null_bb);
3628         args [0] = rgctx;
3629         EMIT_NEW_ICONST (cfg, args [1], index);
3630         if (mrgctx)
3631                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3632         else
3633                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3634         MONO_INST_NEW (cfg, ins, OP_MOVE);
3635         ins->dreg = res_reg;
3636         ins->sreg1 = call->dreg;
3637         MONO_ADD_INS (cfg->cbb, ins);
3638         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3639
3640         MONO_START_BB (cfg, end_bb);
3641
3642         return res;
3643 #endif
3644 }
3645
3646 /*
3647  * emit_rgctx_fetch:
3648  *
3649  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3650  * given by RGCTX.
3651  */
3652 static inline MonoInst*
3653 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3654 {
3655         if (cfg->llvm_only)
3656                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3657         else
3658                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3659 }
3660
3661 static MonoInst*
3662 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3663                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3664 {
3665         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3666         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3667
3668         return emit_rgctx_fetch (cfg, rgctx, entry);
3669 }
3670
3671 static MonoInst*
3672 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3673                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3674 {
3675         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3676         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3677
3678         return emit_rgctx_fetch (cfg, rgctx, entry);
3679 }
3680
3681 static MonoInst*
3682 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3683                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3684 {
3685         MonoJumpInfoGSharedVtCall *call_info;
3686         MonoJumpInfoRgctxEntry *entry;
3687         MonoInst *rgctx;
3688
3689         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3690         call_info->sig = sig;
3691         call_info->method = cmethod;
3692
3693         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3694         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3695
3696         return emit_rgctx_fetch (cfg, rgctx, entry);
3697 }
3698
3699 /*
3700  * emit_get_rgctx_virt_method:
3701  *
3702  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3703  */
3704 static MonoInst*
3705 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3706                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3707 {
3708         MonoJumpInfoVirtMethod *info;
3709         MonoJumpInfoRgctxEntry *entry;
3710         MonoInst *rgctx;
3711
3712         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3713         info->klass = klass;
3714         info->method = virt_method;
3715
3716         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3717         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3718
3719         return emit_rgctx_fetch (cfg, rgctx, entry);
3720 }
3721
3722 static MonoInst*
3723 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3724                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3725 {
3726         MonoJumpInfoRgctxEntry *entry;
3727         MonoInst *rgctx;
3728
3729         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3730         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3731
3732         return emit_rgctx_fetch (cfg, rgctx, entry);
3733 }
3734
3735 /*
3736  * emit_get_rgctx_method:
3737  *
3738  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3739  * normal constants, else emit a load from the rgctx.
3740  */
3741 static MonoInst*
3742 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3743                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3744 {
3745         if (!context_used) {
3746                 MonoInst *ins;
3747
3748                 switch (rgctx_type) {
3749                 case MONO_RGCTX_INFO_METHOD:
3750                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3751                         return ins;
3752                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3753                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3754                         return ins;
3755                 default:
3756                         g_assert_not_reached ();
3757                 }
3758         } else {
3759                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3760                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3761
3762                 return emit_rgctx_fetch (cfg, rgctx, entry);
3763         }
3764 }
3765
3766 static MonoInst*
3767 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3768                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3769 {
3770         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3771         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3772
3773         return emit_rgctx_fetch (cfg, rgctx, entry);
3774 }
3775
3776 static int
3777 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3778 {
3779         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3780         MonoRuntimeGenericContextInfoTemplate *template_;
3781         int i, idx;
3782
3783         g_assert (info);
3784
3785         for (i = 0; i < info->num_entries; ++i) {
3786                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3787
3788                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3789                         return i;
3790         }
3791
3792         if (info->num_entries == info->count_entries) {
3793                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3794                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3795
3796                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3797
3798                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3799                 info->entries = new_entries;
3800                 info->count_entries = new_count_entries;
3801         }
3802
3803         idx = info->num_entries;
3804         template_ = &info->entries [idx];
3805         template_->info_type = rgctx_type;
3806         template_->data = data;
3807
3808         info->num_entries ++;
3809
3810         return idx;
3811 }
3812
3813 /*
3814  * emit_get_gsharedvt_info:
3815  *
3816  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3817  */
3818 static MonoInst*
3819 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3820 {
3821         MonoInst *ins;
3822         int idx, dreg;
3823
3824         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3825         /* Load info->entries [idx] */
3826         dreg = alloc_preg (cfg);
3827         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3828
3829         return ins;
3830 }
3831
3832 static MonoInst*
3833 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3834 {
3835         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3836 }
3837
3838 /*
3839  * On return the caller must check @klass for load errors.
3840  */
3841 static void
3842 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3843 {
3844         MonoInst *vtable_arg;
3845         int context_used;
3846
3847         context_used = mini_class_check_context_used (cfg, klass);
3848
3849         if (context_used) {
3850                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3851                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3852         } else {
3853                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3854
3855                 if (!vtable)
3856                         return;
3857                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3858         }
3859
3860         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3861                 MonoInst *ins;
3862
3863                 /*
3864                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3865                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3866                  */
3867                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3868                 ins->sreg1 = vtable_arg->dreg;
3869                 MONO_ADD_INS (cfg->cbb, ins);
3870         } else {
3871                 static int byte_offset = -1;
3872                 static guint8 bitmask;
3873                 int bits_reg, inited_reg;
3874                 MonoBasicBlock *inited_bb;
3875                 MonoInst *args [16];
3876
3877                 if (byte_offset < 0)
3878                         mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3879
3880                 bits_reg = alloc_ireg (cfg);
3881                 inited_reg = alloc_ireg (cfg);
3882
3883                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3884                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3885
3886                 NEW_BBLOCK (cfg, inited_bb);
3887
3888                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3889                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3890
3891                 args [0] = vtable_arg;
3892                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3893
3894                 MONO_START_BB (cfg, inited_bb);
3895         }
3896 }
3897
3898 static void
3899 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3900 {
3901         MonoInst *ins;
3902
3903         if (cfg->gen_seq_points && cfg->method == method) {
3904                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3905                 if (nonempty_stack)
3906                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3907                 MONO_ADD_INS (cfg->cbb, ins);
3908         }
3909 }
3910
3911 static void
3912 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3913 {
3914         if (mini_get_debug_options ()->better_cast_details) {
3915                 int vtable_reg = alloc_preg (cfg);
3916                 int klass_reg = alloc_preg (cfg);
3917                 MonoBasicBlock *is_null_bb = NULL;
3918                 MonoInst *tls_get;
3919                 int to_klass_reg, context_used;
3920
3921                 if (null_check) {
3922                         NEW_BBLOCK (cfg, is_null_bb);
3923
3924                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3925                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3926                 }
3927
3928                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3929                 if (!tls_get) {
3930                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3931                         exit (1);
3932                 }
3933
3934                 MONO_ADD_INS (cfg->cbb, tls_get);
3935                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3936                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3937
3938                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3939
3940                 context_used = mini_class_check_context_used (cfg, klass);
3941                 if (context_used) {
3942                         MonoInst *class_ins;
3943
3944                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3945                         to_klass_reg = class_ins->dreg;
3946                 } else {
3947                         to_klass_reg = alloc_preg (cfg);
3948                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3949                 }
3950                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3951
3952                 if (null_check)
3953                         MONO_START_BB (cfg, is_null_bb);
3954         }
3955 }
3956
3957 static void
3958 reset_cast_details (MonoCompile *cfg)
3959 {
3960         /* Reset the variables holding the cast details */
3961         if (mini_get_debug_options ()->better_cast_details) {
3962                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3963
3964                 MONO_ADD_INS (cfg->cbb, tls_get);
3965                 /* It is enough to reset the from field */
3966                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3967         }
3968 }
3969
3970 /*
3971  * On return the caller must check @array_class for load errors
3972  */
3973 static void
3974 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3975 {
3976         int vtable_reg = alloc_preg (cfg);
3977         int context_used;
3978
3979         context_used = mini_class_check_context_used (cfg, array_class);
3980
3981         save_cast_details (cfg, array_class, obj->dreg, FALSE);
3982
3983         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3984
3985         if (cfg->opt & MONO_OPT_SHARED) {
3986                 int class_reg = alloc_preg (cfg);
3987                 MonoInst *ins;
3988
3989                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3990                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3991                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3992         } else if (context_used) {
3993                 MonoInst *vtable_ins;
3994
3995                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3996                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3997         } else {
3998                 if (cfg->compile_aot) {
3999                         int vt_reg;
4000                         MonoVTable *vtable;
4001
4002                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4003                                 return;
4004                         vt_reg = alloc_preg (cfg);
4005                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
4006                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
4007                 } else {
4008                         MonoVTable *vtable;
4009                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4010                                 return;
4011                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
4012                 }
4013         }
4014
4015         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
4016
4017         reset_cast_details (cfg);
4018 }
4019
4020 /**
4021  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
4022  * generic code is generated.
4023  */
4024 static MonoInst*
4025 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
4026 {
4027         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
4028
4029         if (context_used) {
4030                 MonoInst *rgctx, *addr;
4031
4032                 /* FIXME: What if the class is shared?  We might not
4033                    have to get the address of the method from the
4034                    RGCTX. */
4035                 addr = emit_get_rgctx_method (cfg, context_used, method,
4036                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4037                 if (cfg->llvm_only) {
4038                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
4039                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4040                 } else {
4041                         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4042
4043                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4044                 }
4045         } else {
4046                 gboolean pass_vtable, pass_mrgctx;
4047                 MonoInst *rgctx_arg = NULL;
4048
4049                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4050                 g_assert (!pass_mrgctx);
4051
4052                 if (pass_vtable) {
4053                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4054
4055                         g_assert (vtable);
4056                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4057                 }
4058
4059                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4060         }
4061 }
4062
4063 static MonoInst*
4064 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
4065 {
4066         MonoInst *add;
4067         int obj_reg;
4068         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
4069         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
4070         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
4071         int rank_reg = alloc_dreg (cfg ,STACK_I4);
4072
4073         obj_reg = sp [0]->dreg;
4074         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4075         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4076
4077         /* FIXME: generics */
4078         g_assert (klass->rank == 0);
4079
4080         // Check rank == 0
4081         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
4082         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4083
4084         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4085         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
4086
4087         if (context_used) {
4088                 MonoInst *element_class;
4089
4090                 /* This assertion is from the unboxcast insn */
4091                 g_assert (klass->rank == 0);
4092
4093                 element_class = emit_get_rgctx_klass (cfg, context_used,
4094                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
4095
4096                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
4097                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4098         } else {
4099                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
4100                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
4101                 reset_cast_details (cfg);
4102         }
4103
4104         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
4105         MONO_ADD_INS (cfg->cbb, add);
4106         add->type = STACK_MP;
4107         add->klass = klass;
4108
4109         return add;
4110 }
4111
4112 static MonoInst*
4113 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
4114 {
4115         MonoInst *addr, *klass_inst, *is_ref, *args[16];
4116         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4117         MonoInst *ins;
4118         int dreg, addr_reg;
4119
4120         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
4121
4122         /* obj */
4123         args [0] = obj;
4124
4125         /* klass */
4126         args [1] = klass_inst;
4127
4128         /* CASTCLASS */
4129         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
4130
4131         NEW_BBLOCK (cfg, is_ref_bb);
4132         NEW_BBLOCK (cfg, is_nullable_bb);
4133         NEW_BBLOCK (cfg, end_bb);
4134         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4135         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4136         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4137
4138         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4139         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4140
4141         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
4142         addr_reg = alloc_dreg (cfg, STACK_MP);
4143
4144         /* Non-ref case */
4145         /* UNBOX */
4146         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
4147         MONO_ADD_INS (cfg->cbb, addr);
4148
4149         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4150
4151         /* Ref case */
4152         MONO_START_BB (cfg, is_ref_bb);
4153
4154         /* Save the ref to a temporary */
4155         dreg = alloc_ireg (cfg);
4156         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
4157         addr->dreg = addr_reg;
4158         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
4159         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4160
4161         /* Nullable case */
4162         MONO_START_BB (cfg, is_nullable_bb);
4163
4164         {
4165                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
4166                 MonoInst *unbox_call;
4167                 MonoMethodSignature *unbox_sig;
4168
4169                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4170                 unbox_sig->ret = &klass->byval_arg;
4171                 unbox_sig->param_count = 1;
4172                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
4173
4174                 if (cfg->llvm_only)
4175                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
4176                 else
4177                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
4178
4179                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
4180                 addr->dreg = addr_reg;
4181         }
4182
4183         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4184
4185         /* End */
4186         MONO_START_BB (cfg, end_bb);
4187
4188         /* LDOBJ */
4189         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
4190
4191         return ins;
4192 }
4193
4194 /*
4195  * Returns NULL and set the cfg exception on error.
4196  */
4197 static MonoInst*
4198 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4199 {
4200         MonoInst *iargs [2];
4201         void *alloc_ftn;
4202
4203         if (context_used) {
4204                 MonoInst *data;
4205                 MonoRgctxInfoType rgctx_info;
4206                 MonoInst *iargs [2];
4207                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4208
4209                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4210
4211                 if (cfg->opt & MONO_OPT_SHARED)
4212                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4213                 else
4214                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4215                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4216
4217                 if (cfg->opt & MONO_OPT_SHARED) {
4218                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4219                         iargs [1] = data;
4220                         alloc_ftn = ves_icall_object_new;
4221                 } else {
4222                         iargs [0] = data;
4223                         alloc_ftn = ves_icall_object_new_specific;
4224                 }
4225
4226                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4227                         if (known_instance_size) {
4228                                 int size = mono_class_instance_size (klass);
4229                                 if (size < sizeof (MonoObject))
4230                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4231
4232                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
4233                         }
4234                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4235                 }
4236
4237                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4238         }
4239
4240         if (cfg->opt & MONO_OPT_SHARED) {
4241                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4242                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4243
4244                 alloc_ftn = ves_icall_object_new;
4245         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
4246                 /* This happens often in argument checking code, eg. throw new FooException... */
4247                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4248                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4249                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4250         } else {
4251                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4252                 MonoMethod *managed_alloc = NULL;
4253                 gboolean pass_lw;
4254
4255                 if (!vtable) {
4256                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4257                         cfg->exception_ptr = klass;
4258                         return NULL;
4259                 }
4260
4261                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4262
4263                 if (managed_alloc) {
4264                         int size = mono_class_instance_size (klass);
4265                         if (size < sizeof (MonoObject))
4266                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4267
4268                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4269                         EMIT_NEW_ICONST (cfg, iargs [1], size);
4270                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4271                 }
4272                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4273                 if (pass_lw) {
4274                         guint32 lw = vtable->klass->instance_size;
4275                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4276                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4277                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4278                 }
4279                 else {
4280                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4281                 }
4282         }
4283
4284         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4285 }
4286
4287 /*
4288  * Returns NULL and set the cfg exception on error.
4289  */
4290 static MonoInst*
4291 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4292 {
4293         MonoInst *alloc, *ins;
4294
4295         if (mono_class_is_nullable (klass)) {
4296                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4297
4298                 if (context_used) {
4299                         if (cfg->llvm_only && cfg->gsharedvt) {
4300                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4301                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4302                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4303                         } else {
4304                                 /* FIXME: What if the class is shared?  We might not
4305                                    have to get the method address from the RGCTX. */
4306                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4307                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4308                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4309
4310                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4311                         }
4312                 } else {
4313                         gboolean pass_vtable, pass_mrgctx;
4314                         MonoInst *rgctx_arg = NULL;
4315
4316                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4317                         g_assert (!pass_mrgctx);
4318
4319                         if (pass_vtable) {
4320                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4321
4322                                 g_assert (vtable);
4323                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4324                         }
4325
4326                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4327                 }
4328         }
4329
4330         if (mini_is_gsharedvt_klass (klass)) {
4331                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4332                 MonoInst *res, *is_ref, *src_var, *addr;
4333                 int dreg;
4334
4335                 dreg = alloc_ireg (cfg);
4336
4337                 NEW_BBLOCK (cfg, is_ref_bb);
4338                 NEW_BBLOCK (cfg, is_nullable_bb);
4339                 NEW_BBLOCK (cfg, end_bb);
4340                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4341                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4342                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4343
4344                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4345                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4346
4347                 /* Non-ref case */
4348                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4349                 if (!alloc)
4350                         return NULL;
4351                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4352                 ins->opcode = OP_STOREV_MEMBASE;
4353
4354                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4355                 res->type = STACK_OBJ;
4356                 res->klass = klass;
4357                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4358
4359                 /* Ref case */
4360                 MONO_START_BB (cfg, is_ref_bb);
4361
4362                 /* val is a vtype, so has to load the value manually */
4363                 src_var = get_vreg_to_inst (cfg, val->dreg);
4364                 if (!src_var)
4365                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4366                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4367                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4368                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4369
4370                 /* Nullable case */
4371                 MONO_START_BB (cfg, is_nullable_bb);
4372
4373                 {
4374                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4375                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4376                         MonoInst *box_call;
4377                         MonoMethodSignature *box_sig;
4378
4379                         /*
4380                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4381                          * construct that method at JIT time, so have to do things by hand.
4382                          */
4383                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4384                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4385                         box_sig->param_count = 1;
4386                         box_sig->params [0] = &klass->byval_arg;
4387
4388                         if (cfg->llvm_only)
4389                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4390                         else
4391                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4392                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4393                         res->type = STACK_OBJ;
4394                         res->klass = klass;
4395                 }
4396
4397                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4398
4399                 MONO_START_BB (cfg, end_bb);
4400
4401                 return res;
4402         } else {
4403                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4404                 if (!alloc)
4405                         return NULL;
4406
4407                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4408                 return alloc;
4409         }
4410 }
4411
4412 static gboolean
4413 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4414 {
4415         int i;
4416         MonoGenericContainer *container;
4417         MonoGenericInst *ginst;
4418
4419         if (klass->generic_class) {
4420                 container = klass->generic_class->container_class->generic_container;
4421                 ginst = klass->generic_class->context.class_inst;
4422         } else if (klass->generic_container && context_used) {
4423                 container = klass->generic_container;
4424                 ginst = container->context.class_inst;
4425         } else {
4426                 return FALSE;
4427         }
4428
4429         for (i = 0; i < container->type_argc; ++i) {
4430                 MonoType *type;
4431                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4432                         continue;
4433                 type = ginst->type_argv [i];
4434                 if (mini_type_is_reference (type))
4435                         return TRUE;
4436         }
4437         return FALSE;
4438 }
4439
4440 static GHashTable* direct_icall_type_hash;
4441
4442 static gboolean
4443 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4444 {
4445         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4446         if (!direct_icalls_enabled (cfg))
4447                 return FALSE;
4448
4449         /*
4450          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4451          * Whitelist a few icalls for now.
4452          */
4453         if (!direct_icall_type_hash) {
4454                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4455
4456                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4457                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4458                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4459                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4460                 mono_memory_barrier ();
4461                 direct_icall_type_hash = h;
4462         }
4463
4464         if (cmethod->klass == mono_defaults.math_class)
4465                 return TRUE;
4466         /* No locking needed */
4467         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4468                 return TRUE;
4469         return FALSE;
4470 }
4471
4472 #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)
4473
4474 static MonoInst*
4475 emit_isinst_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4476 {
4477         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4478         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4479 }
4480
4481 static MonoInst*
4482 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4483 {
4484         MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
4485         MonoInst *res;
4486
4487         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4488         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4489         reset_cast_details (cfg);
4490
4491         return res;
4492 }
4493
4494 static int
4495 get_castclass_cache_idx (MonoCompile *cfg)
4496 {
4497         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4498         cfg->castclass_cache_index ++;
4499         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4500 }
4501
4502
4503 static MonoInst*
4504 emit_isinst_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4505 {
4506         MonoInst *args [3];
4507         int idx;
4508
4509         args [0] = obj; /* obj */
4510         EMIT_NEW_CLASSCONST (cfg, args [1], klass); /* klass */
4511
4512         idx = get_castclass_cache_idx (cfg); /* inline cache*/
4513         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4514
4515         return emit_isinst_with_cache (cfg, klass, args);
4516 }
4517
4518 static MonoInst*
4519 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4520 {
4521         MonoInst *args [3];
4522         int idx;
4523
4524         /* obj */
4525         args [0] = obj;
4526
4527         /* klass */
4528         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4529
4530         /* inline cache*/
4531         idx = get_castclass_cache_idx (cfg);
4532         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4533
4534         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4535         return emit_castclass_with_cache (cfg, klass, args);
4536 }
4537
4538 /*
4539  * Returns NULL and set the cfg exception on error.
4540  */
4541 static MonoInst*
4542 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4543 {
4544         MonoBasicBlock *is_null_bb;
4545         int obj_reg = src->dreg;
4546         int vtable_reg = alloc_preg (cfg);
4547         MonoInst *klass_inst = NULL;
4548
4549         if (src->opcode == OP_PCONST && src->inst_p0 == 0)
4550                 return src;
4551
4552         if (context_used) {
4553                 MonoInst *args [3];
4554
4555                 if (mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4556                         MonoInst *cache_ins;
4557
4558                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4559
4560                         /* obj */
4561                         args [0] = src;
4562
4563                         /* klass - it's the second element of the cache entry*/
4564                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4565
4566                         /* cache */
4567                         args [2] = cache_ins;
4568
4569                         return emit_castclass_with_cache (cfg, klass, args);
4570                 }
4571
4572                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4573         }
4574
4575         NEW_BBLOCK (cfg, is_null_bb);
4576
4577         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4578         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4579
4580         save_cast_details (cfg, klass, obj_reg, FALSE);
4581
4582         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4583                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4584                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4585         } else {
4586                 int klass_reg = alloc_preg (cfg);
4587
4588                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4589
4590                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4591                         /* the remoting code is broken, access the class for now */
4592                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4593                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4594                                 if (!vt) {
4595                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4596                                         cfg->exception_ptr = klass;
4597                                         return NULL;
4598                                 }
4599                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4600                         } else {
4601                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4602                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4603                         }
4604                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4605                 } else {
4606                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4607                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4608                 }
4609         }
4610
4611         MONO_START_BB (cfg, is_null_bb);
4612
4613         reset_cast_details (cfg);
4614
4615         return src;
4616 }
4617
4618 /*
4619  * Returns NULL and set the cfg exception on error.
4620  */
4621 static MonoInst*
4622 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4623 {
4624         MonoInst *ins;
4625         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4626         int obj_reg = src->dreg;
4627         int vtable_reg = alloc_preg (cfg);
4628         int res_reg = alloc_ireg_ref (cfg);
4629         MonoInst *klass_inst = NULL;
4630
4631         if (context_used) {
4632                 MonoInst *args [3];
4633
4634                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4635                         MonoInst *cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4636
4637                         args [0] = src; /* obj */
4638
4639                         /* klass - it's the second element of the cache entry*/
4640                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4641
4642                         args [2] = cache_ins; /* cache */
4643                         return emit_isinst_with_cache (cfg, klass, args);
4644                 }
4645
4646                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4647         }
4648
4649         NEW_BBLOCK (cfg, is_null_bb);
4650         NEW_BBLOCK (cfg, false_bb);
4651         NEW_BBLOCK (cfg, end_bb);
4652
4653         /* Do the assignment at the beginning, so the other assignment can be if converted */
4654         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4655         ins->type = STACK_OBJ;
4656         ins->klass = klass;
4657
4658         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4659         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4660
4661         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4662
4663         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4664                 g_assert (!context_used);
4665                 /* the is_null_bb target simply copies the input register to the output */
4666                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4667         } else {
4668                 int klass_reg = alloc_preg (cfg);
4669
4670                 if (klass->rank) {
4671                         int rank_reg = alloc_preg (cfg);
4672                         int eclass_reg = alloc_preg (cfg);
4673
4674                         g_assert (!context_used);
4675                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4676                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4677                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4678                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4679                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4680                         if (klass->cast_class == mono_defaults.object_class) {
4681                                 int parent_reg = alloc_preg (cfg);
4682                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4683                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4684                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4685                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4686                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4687                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4688                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4689                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4690                         } else if (klass->cast_class == mono_defaults.enum_class) {
4691                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4692                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4693                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4694                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4695                         } else {
4696                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4697                                         /* Check that the object is a vector too */
4698                                         int bounds_reg = alloc_preg (cfg);
4699                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4700                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4701                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4702                                 }
4703
4704                                 /* the is_null_bb target simply copies the input register to the output */
4705                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4706                         }
4707                 } else if (mono_class_is_nullable (klass)) {
4708                         g_assert (!context_used);
4709                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4710                         /* the is_null_bb target simply copies the input register to the output */
4711                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4712                 } else {
4713                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4714                                 g_assert (!context_used);
4715                                 /* the remoting code is broken, access the class for now */
4716                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4717                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4718                                         if (!vt) {
4719                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4720                                                 cfg->exception_ptr = klass;
4721                                                 return NULL;
4722                                         }
4723                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4724                                 } else {
4725                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4726                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4727                                 }
4728                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4729                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4730                         } else {
4731                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4732                                 /* the is_null_bb target simply copies the input register to the output */
4733                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4734                         }
4735                 }
4736         }
4737
4738         MONO_START_BB (cfg, false_bb);
4739
4740         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4741         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4742
4743         MONO_START_BB (cfg, is_null_bb);
4744
4745         MONO_START_BB (cfg, end_bb);
4746
4747         return ins;
4748 }
4749
4750 static MonoInst*
4751 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4752 {
4753         /* This opcode takes as input an object reference and a class, and returns:
4754         0) if the object is an instance of the class,
4755         1) if the object is not instance of the class,
4756         2) if the object is a proxy whose type cannot be determined */
4757
4758         MonoInst *ins;
4759 #ifndef DISABLE_REMOTING
4760         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4761 #else
4762         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4763 #endif
4764         int obj_reg = src->dreg;
4765         int dreg = alloc_ireg (cfg);
4766         int tmp_reg;
4767 #ifndef DISABLE_REMOTING
4768         int klass_reg = alloc_preg (cfg);
4769 #endif
4770
4771         NEW_BBLOCK (cfg, true_bb);
4772         NEW_BBLOCK (cfg, false_bb);
4773         NEW_BBLOCK (cfg, end_bb);
4774 #ifndef DISABLE_REMOTING
4775         NEW_BBLOCK (cfg, false2_bb);
4776         NEW_BBLOCK (cfg, no_proxy_bb);
4777 #endif
4778
4779         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4780         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4781
4782         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4783 #ifndef DISABLE_REMOTING
4784                 NEW_BBLOCK (cfg, interface_fail_bb);
4785 #endif
4786
4787                 tmp_reg = alloc_preg (cfg);
4788                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4789 #ifndef DISABLE_REMOTING
4790                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4791                 MONO_START_BB (cfg, interface_fail_bb);
4792                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4793
4794                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4795
4796                 tmp_reg = alloc_preg (cfg);
4797                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4798                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4799                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4800 #else
4801                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4802 #endif
4803         } else {
4804 #ifndef DISABLE_REMOTING
4805                 tmp_reg = alloc_preg (cfg);
4806                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4807                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4808
4809                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4810                 tmp_reg = alloc_preg (cfg);
4811                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4812                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4813
4814                 tmp_reg = alloc_preg (cfg);
4815                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4816                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4817                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4818
4819                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4820                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4821
4822                 MONO_START_BB (cfg, no_proxy_bb);
4823
4824                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4825 #else
4826                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4827 #endif
4828         }
4829
4830         MONO_START_BB (cfg, false_bb);
4831
4832         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4833         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4834
4835 #ifndef DISABLE_REMOTING
4836         MONO_START_BB (cfg, false2_bb);
4837
4838         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4839         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4840 #endif
4841
4842         MONO_START_BB (cfg, true_bb);
4843
4844         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4845
4846         MONO_START_BB (cfg, end_bb);
4847
4848         /* FIXME: */
4849         MONO_INST_NEW (cfg, ins, OP_ICONST);
4850         ins->dreg = dreg;
4851         ins->type = STACK_I4;
4852
4853         return ins;
4854 }
4855
4856 static MonoInst*
4857 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4858 {
4859         /* This opcode takes as input an object reference and a class, and returns:
4860         0) if the object is an instance of the class,
4861         1) if the object is a proxy whose type cannot be determined
4862         an InvalidCastException exception is thrown otherwhise*/
4863
4864         MonoInst *ins;
4865 #ifndef DISABLE_REMOTING
4866         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4867 #else
4868         MonoBasicBlock *ok_result_bb;
4869 #endif
4870         int obj_reg = src->dreg;
4871         int dreg = alloc_ireg (cfg);
4872         int tmp_reg = alloc_preg (cfg);
4873
4874 #ifndef DISABLE_REMOTING
4875         int klass_reg = alloc_preg (cfg);
4876         NEW_BBLOCK (cfg, end_bb);
4877 #endif
4878
4879         NEW_BBLOCK (cfg, ok_result_bb);
4880
4881         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4882         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4883
4884         save_cast_details (cfg, klass, obj_reg, FALSE);
4885
4886         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4887 #ifndef DISABLE_REMOTING
4888                 NEW_BBLOCK (cfg, interface_fail_bb);
4889
4890                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4891                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4892                 MONO_START_BB (cfg, interface_fail_bb);
4893                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4894
4895                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4896
4897                 tmp_reg = alloc_preg (cfg);
4898                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4899                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4900                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4901
4902                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4903                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4904 #else
4905                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4906                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4907                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4908 #endif
4909         } else {
4910 #ifndef DISABLE_REMOTING
4911                 NEW_BBLOCK (cfg, no_proxy_bb);
4912
4913                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4914                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4915                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4916
4917                 tmp_reg = alloc_preg (cfg);
4918                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4919                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4920
4921                 tmp_reg = alloc_preg (cfg);
4922                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4923                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4924                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4925
4926                 NEW_BBLOCK (cfg, fail_1_bb);
4927
4928                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4929
4930                 MONO_START_BB (cfg, fail_1_bb);
4931
4932                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4933                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4934
4935                 MONO_START_BB (cfg, no_proxy_bb);
4936
4937                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4938 #else
4939                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4940 #endif
4941         }
4942
4943         MONO_START_BB (cfg, ok_result_bb);
4944
4945         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4946
4947 #ifndef DISABLE_REMOTING
4948         MONO_START_BB (cfg, end_bb);
4949 #endif
4950
4951         /* FIXME: */
4952         MONO_INST_NEW (cfg, ins, OP_ICONST);
4953         ins->dreg = dreg;
4954         ins->type = STACK_I4;
4955
4956         return ins;
4957 }
4958
4959 static G_GNUC_UNUSED MonoInst*
4960 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4961 {
4962         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4963         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4964         gboolean is_i4;
4965
4966         switch (enum_type->type) {
4967         case MONO_TYPE_I8:
4968         case MONO_TYPE_U8:
4969 #if SIZEOF_REGISTER == 8
4970         case MONO_TYPE_I:
4971         case MONO_TYPE_U:
4972 #endif
4973                 is_i4 = FALSE;
4974                 break;
4975         default:
4976                 is_i4 = TRUE;
4977                 break;
4978         }
4979
4980         {
4981                 MonoInst *load, *and_, *cmp, *ceq;
4982                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4983                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4984                 int dest_reg = alloc_ireg (cfg);
4985
4986                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4987                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4988                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4989                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4990
4991                 ceq->type = STACK_I4;
4992
4993                 if (!is_i4) {
4994                         load = mono_decompose_opcode (cfg, load);
4995                         and_ = mono_decompose_opcode (cfg, and_);
4996                         cmp = mono_decompose_opcode (cfg, cmp);
4997                         ceq = mono_decompose_opcode (cfg, ceq);
4998                 }
4999
5000                 return ceq;
5001         }
5002 }
5003
5004 /*
5005  * Returns NULL and set the cfg exception on error.
5006  */
5007 static G_GNUC_UNUSED MonoInst*
5008 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5009 {
5010         MonoInst *ptr;
5011         int dreg;
5012         gpointer trampoline;
5013         MonoInst *obj, *method_ins, *tramp_ins;
5014         MonoDomain *domain;
5015         guint8 **code_slot;
5016
5017         if (virtual_ && !cfg->llvm_only) {
5018                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5019                 g_assert (invoke);
5020
5021                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5022                         return NULL;
5023         }
5024
5025         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5026         if (!obj)
5027                 return NULL;
5028
5029         /* Inline the contents of mono_delegate_ctor */
5030
5031         /* Set target field */
5032         /* Optimize away setting of NULL target */
5033         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5034                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5035                 if (cfg->gen_write_barriers) {
5036                         dreg = alloc_preg (cfg);
5037                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5038                         emit_write_barrier (cfg, ptr, target);
5039                 }
5040         }
5041
5042         /* Set method field */
5043         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5044         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5045
5046         /*
5047          * To avoid looking up the compiled code belonging to the target method
5048          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5049          * store it, and we fill it after the method has been compiled.
5050          */
5051         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5052                 MonoInst *code_slot_ins;
5053
5054                 if (context_used) {
5055                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5056                 } else {
5057                         domain = mono_domain_get ();
5058                         mono_domain_lock (domain);
5059                         if (!domain_jit_info (domain)->method_code_hash)
5060                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5061                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5062                         if (!code_slot) {
5063                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5064                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5065                         }
5066                         mono_domain_unlock (domain);
5067
5068                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5069                 }
5070                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5071         }
5072
5073         if (cfg->llvm_only) {
5074                 MonoInst *args [16];
5075
5076                 if (virtual_) {
5077                         args [0] = obj;
5078                         args [1] = target;
5079                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5080                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5081                 } else {
5082                         args [0] = obj;
5083                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5084                 }
5085
5086                 return obj;
5087         }
5088
5089         if (cfg->compile_aot) {
5090                 MonoDelegateClassMethodPair *del_tramp;
5091
5092                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5093                 del_tramp->klass = klass;
5094                 del_tramp->method = context_used ? NULL : method;
5095                 del_tramp->is_virtual = virtual_;
5096                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5097         } else {
5098                 if (virtual_)
5099                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5100                 else
5101                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5102                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5103         }
5104
5105         /* Set invoke_impl field */
5106         if (virtual_) {
5107                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5108         } else {
5109                 dreg = alloc_preg (cfg);
5110                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5111                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5112
5113                 dreg = alloc_preg (cfg);
5114                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5115                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5116         }
5117
5118         dreg = alloc_preg (cfg);
5119         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5120         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5121
5122         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5123
5124         return obj;
5125 }
5126
5127 static MonoInst*
5128 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5129 {
5130         MonoJitICallInfo *info;
5131
5132         /* Need to register the icall so it gets an icall wrapper */
5133         info = mono_get_array_new_va_icall (rank);
5134
5135         cfg->flags |= MONO_CFG_HAS_VARARGS;
5136
5137         /* mono_array_new_va () needs a vararg calling convention */
5138         cfg->exception_message = g_strdup ("array-new");
5139         cfg->disable_llvm = TRUE;
5140
5141         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5142         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5143 }
5144
5145 /*
5146  * handle_constrained_gsharedvt_call:
5147  *
5148  *   Handle constrained calls where the receiver is a gsharedvt type.
5149  * Return the instruction representing the call. Set the cfg exception on failure.
5150  */
5151 static MonoInst*
5152 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5153                                                                    gboolean *ref_emit_widen)
5154 {
5155         MonoInst *ins = NULL;
5156         gboolean emit_widen = *ref_emit_widen;
5157
5158         /*
5159          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5160          * 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
5161          * pack the arguments into an array, and do the rest of the work in in an icall.
5162          */
5163         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5164                 (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)) &&
5165                 (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]))))) {
5166                 MonoInst *args [16];
5167
5168                 /*
5169                  * This case handles calls to
5170                  * - object:ToString()/Equals()/GetHashCode(),
5171                  * - System.IComparable<T>:CompareTo()
5172                  * - System.IEquatable<T>:Equals ()
5173                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5174                  */
5175
5176                 args [0] = sp [0];
5177                 if (mono_method_check_context_used (cmethod))
5178                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5179                 else
5180                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5181                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5182
5183                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5184                 if (fsig->hasthis && fsig->param_count) {
5185                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5186                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5187                         ins->dreg = alloc_preg (cfg);
5188                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5189                         MONO_ADD_INS (cfg->cbb, ins);
5190                         args [4] = ins;
5191
5192                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5193                                 int addr_reg, deref_arg_reg;
5194
5195                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5196                                 deref_arg_reg = alloc_preg (cfg);
5197                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5198                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5199
5200                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5201                                 addr_reg = ins->dreg;
5202                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5203                         } else {
5204                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5205                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5206                         }
5207                 } else {
5208                         EMIT_NEW_ICONST (cfg, args [3], 0);
5209                         EMIT_NEW_ICONST (cfg, args [4], 0);
5210                 }
5211                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5212                 emit_widen = FALSE;
5213
5214                 if (mini_is_gsharedvt_type (fsig->ret)) {
5215                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5216                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5217                         MonoInst *add;
5218
5219                         /* Unbox */
5220                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5221                         MONO_ADD_INS (cfg->cbb, add);
5222                         /* Load value */
5223                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5224                         MONO_ADD_INS (cfg->cbb, ins);
5225                         /* ins represents the call result */
5226                 }
5227         } else {
5228                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5229         }
5230
5231         *ref_emit_widen = emit_widen;
5232
5233         return ins;
5234
5235  exception_exit:
5236         return NULL;
5237 }
5238
5239 static void
5240 mono_emit_load_got_addr (MonoCompile *cfg)
5241 {
5242         MonoInst *getaddr, *dummy_use;
5243
5244         if (!cfg->got_var || cfg->got_var_allocated)
5245                 return;
5246
5247         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5248         getaddr->cil_code = cfg->header->code;
5249         getaddr->dreg = cfg->got_var->dreg;
5250
5251         /* Add it to the start of the first bblock */
5252         if (cfg->bb_entry->code) {
5253                 getaddr->next = cfg->bb_entry->code;
5254                 cfg->bb_entry->code = getaddr;
5255         }
5256         else
5257                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5258
5259         cfg->got_var_allocated = TRUE;
5260
5261         /*
5262          * Add a dummy use to keep the got_var alive, since real uses might
5263          * only be generated by the back ends.
5264          * Add it to end_bblock, so the variable's lifetime covers the whole
5265          * method.
5266          * It would be better to make the usage of the got var explicit in all
5267          * cases when the backend needs it (i.e. calls, throw etc.), so this
5268          * wouldn't be needed.
5269          */
5270         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5271         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5272 }
5273
5274 static int inline_limit;
5275 static gboolean inline_limit_inited;
5276
5277 static gboolean
5278 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5279 {
5280         MonoMethodHeaderSummary header;
5281         MonoVTable *vtable;
5282 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5283         MonoMethodSignature *sig = mono_method_signature (method);
5284         int i;
5285 #endif
5286
5287         if (cfg->disable_inline)
5288                 return FALSE;
5289         if (cfg->gshared)
5290                 return FALSE;
5291
5292         if (cfg->inline_depth > 10)
5293                 return FALSE;
5294
5295         if (!mono_method_get_header_summary (method, &header))
5296                 return FALSE;
5297
5298         /*runtime, icall and pinvoke are checked by summary call*/
5299         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5300             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5301             (mono_class_is_marshalbyref (method->klass)) ||
5302             header.has_clauses)
5303                 return FALSE;
5304
5305         /* also consider num_locals? */
5306         /* Do the size check early to avoid creating vtables */
5307         if (!inline_limit_inited) {
5308                 if (g_getenv ("MONO_INLINELIMIT"))
5309                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5310                 else
5311                         inline_limit = INLINE_LENGTH_LIMIT;
5312                 inline_limit_inited = TRUE;
5313         }
5314         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5315                 return FALSE;
5316
5317         /*
5318          * if we can initialize the class of the method right away, we do,
5319          * otherwise we don't allow inlining if the class needs initialization,
5320          * since it would mean inserting a call to mono_runtime_class_init()
5321          * inside the inlined code
5322          */
5323         if (!(cfg->opt & MONO_OPT_SHARED)) {
5324                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5325                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5326                         vtable = mono_class_vtable (cfg->domain, method->klass);
5327                         if (!vtable)
5328                                 return FALSE;
5329                         if (!cfg->compile_aot) {
5330                                 MonoError error;
5331                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5332                                         mono_error_cleanup (&error);
5333                                         return FALSE;
5334                                 }
5335                         }
5336                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5337                         if (cfg->run_cctors && method->klass->has_cctor) {
5338                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5339                                 if (!method->klass->runtime_info)
5340                                         /* No vtable created yet */
5341                                         return FALSE;
5342                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5343                                 if (!vtable)
5344                                         return FALSE;
5345                                 /* This makes so that inline cannot trigger */
5346                                 /* .cctors: too many apps depend on them */
5347                                 /* running with a specific order... */
5348                                 if (! vtable->initialized)
5349                                         return FALSE;
5350                                 MonoError error;
5351                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5352                                         mono_error_cleanup (&error);
5353                                         return FALSE;
5354                                 }
5355                         }
5356                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5357                         if (!method->klass->runtime_info)
5358                                 /* No vtable created yet */
5359                                 return FALSE;
5360                         vtable = mono_class_vtable (cfg->domain, method->klass);
5361                         if (!vtable)
5362                                 return FALSE;
5363                         if (!vtable->initialized)
5364                                 return FALSE;
5365                 }
5366         } else {
5367                 /*
5368                  * If we're compiling for shared code
5369                  * the cctor will need to be run at aot method load time, for example,
5370                  * or at the end of the compilation of the inlining method.
5371                  */
5372                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5373                         return FALSE;
5374         }
5375
5376 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5377         if (mono_arch_is_soft_float ()) {
5378                 /* FIXME: */
5379                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5380                         return FALSE;
5381                 for (i = 0; i < sig->param_count; ++i)
5382                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5383                                 return FALSE;
5384         }
5385 #endif
5386
5387         if (g_list_find (cfg->dont_inline, method))
5388                 return FALSE;
5389
5390         return TRUE;
5391 }
5392
5393 static gboolean
5394 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5395 {
5396         if (!cfg->compile_aot) {
5397                 g_assert (vtable);
5398                 if (vtable->initialized)
5399                         return FALSE;
5400         }
5401
5402         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5403                 if (cfg->method == method)
5404                         return FALSE;
5405         }
5406
5407         if (!mono_class_needs_cctor_run (klass, method))
5408                 return FALSE;
5409
5410         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5411                 /* The initialization is already done before the method is called */
5412                 return FALSE;
5413
5414         return TRUE;
5415 }
5416
5417 static MonoInst*
5418 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5419 {
5420         MonoInst *ins;
5421         guint32 size;
5422         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5423         int context_used;
5424
5425         if (mini_is_gsharedvt_variable_klass (klass)) {
5426                 size = -1;
5427         } else {
5428                 mono_class_init (klass);
5429                 size = mono_class_array_element_size (klass);
5430         }
5431
5432         mult_reg = alloc_preg (cfg);
5433         array_reg = arr->dreg;
5434         index_reg = index->dreg;
5435
5436 #if SIZEOF_REGISTER == 8
5437         /* The array reg is 64 bits but the index reg is only 32 */
5438         if (COMPILE_LLVM (cfg)) {
5439                 /* Not needed */
5440                 index2_reg = index_reg;
5441         } else {
5442                 index2_reg = alloc_preg (cfg);
5443                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5444         }
5445 #else
5446         if (index->type == STACK_I8) {
5447                 index2_reg = alloc_preg (cfg);
5448                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5449         } else {
5450                 index2_reg = index_reg;
5451         }
5452 #endif
5453
5454         if (bcheck)
5455                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5456
5457 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5458         if (size == 1 || size == 2 || size == 4 || size == 8) {
5459                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5460
5461                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5462                 ins->klass = mono_class_get_element_class (klass);
5463                 ins->type = STACK_MP;
5464
5465                 return ins;
5466         }
5467 #endif
5468
5469         add_reg = alloc_ireg_mp (cfg);
5470
5471         if (size == -1) {
5472                 MonoInst *rgctx_ins;
5473
5474                 /* gsharedvt */
5475                 g_assert (cfg->gshared);
5476                 context_used = mini_class_check_context_used (cfg, klass);
5477                 g_assert (context_used);
5478                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5479                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5480         } else {
5481                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5482         }
5483         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5484         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5485         ins->klass = mono_class_get_element_class (klass);
5486         ins->type = STACK_MP;
5487         MONO_ADD_INS (cfg->cbb, ins);
5488
5489         return ins;
5490 }
5491
5492 static MonoInst*
5493 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5494 {
5495         int bounds_reg = alloc_preg (cfg);
5496         int add_reg = alloc_ireg_mp (cfg);
5497         int mult_reg = alloc_preg (cfg);
5498         int mult2_reg = alloc_preg (cfg);
5499         int low1_reg = alloc_preg (cfg);
5500         int low2_reg = alloc_preg (cfg);
5501         int high1_reg = alloc_preg (cfg);
5502         int high2_reg = alloc_preg (cfg);
5503         int realidx1_reg = alloc_preg (cfg);
5504         int realidx2_reg = alloc_preg (cfg);
5505         int sum_reg = alloc_preg (cfg);
5506         int index1, index2, tmpreg;
5507         MonoInst *ins;
5508         guint32 size;
5509
5510         mono_class_init (klass);
5511         size = mono_class_array_element_size (klass);
5512
5513         index1 = index_ins1->dreg;
5514         index2 = index_ins2->dreg;
5515
5516 #if SIZEOF_REGISTER == 8
5517         /* The array reg is 64 bits but the index reg is only 32 */
5518         if (COMPILE_LLVM (cfg)) {
5519                 /* Not needed */
5520         } else {
5521                 tmpreg = alloc_preg (cfg);
5522                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5523                 index1 = tmpreg;
5524                 tmpreg = alloc_preg (cfg);
5525                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5526                 index2 = tmpreg;
5527         }
5528 #else
5529         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5530         tmpreg = -1;
5531 #endif
5532
5533         /* range checking */
5534         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5535                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5536
5537         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5538                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5539         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5540         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5541                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5542         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5543         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5544
5545         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5546                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5547         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5548         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5549                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5550         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5551         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5552
5553         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5554         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5555         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5556         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5557         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5558
5559         ins->type = STACK_MP;
5560         ins->klass = klass;
5561         MONO_ADD_INS (cfg->cbb, ins);
5562
5563         return ins;
5564 }
5565
5566 static MonoInst*
5567 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5568 {
5569         int rank;
5570         MonoInst *addr;
5571         MonoMethod *addr_method;
5572         int element_size;
5573         MonoClass *eclass = cmethod->klass->element_class;
5574
5575         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5576
5577         if (rank == 1)
5578                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5579
5580         /* emit_ldelema_2 depends on OP_LMUL */
5581         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5582                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5583         }
5584
5585         if (mini_is_gsharedvt_variable_klass (eclass))
5586                 element_size = 0;
5587         else
5588                 element_size = mono_class_array_element_size (eclass);
5589         addr_method = mono_marshal_get_array_address (rank, element_size);
5590         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5591
5592         return addr;
5593 }
5594
5595 static MonoBreakPolicy
5596 always_insert_breakpoint (MonoMethod *method)
5597 {
5598         return MONO_BREAK_POLICY_ALWAYS;
5599 }
5600
5601 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5602
5603 /**
5604  * mono_set_break_policy:
5605  * policy_callback: the new callback function
5606  *
5607  * Allow embedders to decide wherther to actually obey breakpoint instructions
5608  * (both break IL instructions and Debugger.Break () method calls), for example
5609  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5610  * untrusted or semi-trusted code.
5611  *
5612  * @policy_callback will be called every time a break point instruction needs to
5613  * be inserted with the method argument being the method that calls Debugger.Break()
5614  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5615  * if it wants the breakpoint to not be effective in the given method.
5616  * #MONO_BREAK_POLICY_ALWAYS is the default.
5617  */
5618 void
5619 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5620 {
5621         if (policy_callback)
5622                 break_policy_func = policy_callback;
5623         else
5624                 break_policy_func = always_insert_breakpoint;
5625 }
5626
5627 static gboolean
5628 should_insert_brekpoint (MonoMethod *method) {
5629         switch (break_policy_func (method)) {
5630         case MONO_BREAK_POLICY_ALWAYS:
5631                 return TRUE;
5632         case MONO_BREAK_POLICY_NEVER:
5633                 return FALSE;
5634         case MONO_BREAK_POLICY_ON_DBG:
5635                 g_warning ("mdb no longer supported");
5636                 return FALSE;
5637         default:
5638                 g_warning ("Incorrect value returned from break policy callback");
5639                 return FALSE;
5640         }
5641 }
5642
5643 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5644 static MonoInst*
5645 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5646 {
5647         MonoInst *addr, *store, *load;
5648         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5649
5650         /* the bounds check is already done by the callers */
5651         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5652         if (is_set) {
5653                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5654                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5655                 if (mini_type_is_reference (fsig->params [2]))
5656                         emit_write_barrier (cfg, addr, load);
5657         } else {
5658                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5659                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5660         }
5661         return store;
5662 }
5663
5664
5665 static gboolean
5666 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5667 {
5668         return mini_type_is_reference (&klass->byval_arg);
5669 }
5670
5671 static MonoInst*
5672 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5673 {
5674         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5675                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5676                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5677                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5678                 MonoInst *iargs [3];
5679
5680                 if (!helper->slot)
5681                         mono_class_setup_vtable (obj_array);
5682                 g_assert (helper->slot);
5683
5684                 if (sp [0]->type != STACK_OBJ)
5685                         return NULL;
5686                 if (sp [2]->type != STACK_OBJ)
5687                         return NULL;
5688
5689                 iargs [2] = sp [2];
5690                 iargs [1] = sp [1];
5691                 iargs [0] = sp [0];
5692
5693                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5694         } else {
5695                 MonoInst *ins;
5696
5697                 if (mini_is_gsharedvt_variable_klass (klass)) {
5698                         MonoInst *addr;
5699
5700                         // FIXME-VT: OP_ICONST optimization
5701                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5702                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5703                         ins->opcode = OP_STOREV_MEMBASE;
5704                 } else if (sp [1]->opcode == OP_ICONST) {
5705                         int array_reg = sp [0]->dreg;
5706                         int index_reg = sp [1]->dreg;
5707                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5708
5709                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5710                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5711
5712                         if (safety_checks)
5713                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5714                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5715                 } else {
5716                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5717                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5718                         if (generic_class_is_reference_type (cfg, klass))
5719                                 emit_write_barrier (cfg, addr, sp [2]);
5720                 }
5721                 return ins;
5722         }
5723 }
5724
5725 static MonoInst*
5726 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5727 {
5728         MonoClass *eklass;
5729
5730         if (is_set)
5731                 eklass = mono_class_from_mono_type (fsig->params [2]);
5732         else
5733                 eklass = mono_class_from_mono_type (fsig->ret);
5734
5735         if (is_set) {
5736                 return emit_array_store (cfg, eklass, args, FALSE);
5737         } else {
5738                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5739                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5740                 return ins;
5741         }
5742 }
5743
5744 static gboolean
5745 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5746 {
5747         uint32_t align;
5748         int param_size, return_size;
5749
5750         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5751         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5752
5753         if (cfg->verbose_level > 3)
5754                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5755
5756         //Don't allow mixing reference types with value types
5757         if (param_klass->valuetype != return_klass->valuetype) {
5758                 if (cfg->verbose_level > 3)
5759                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5760                 return FALSE;
5761         }
5762
5763         if (!param_klass->valuetype) {
5764                 if (cfg->verbose_level > 3)
5765                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5766                 return TRUE;
5767         }
5768
5769         //That are blitable
5770         if (param_klass->has_references || return_klass->has_references)
5771                 return FALSE;
5772
5773         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5774         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5775                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5776                         if (cfg->verbose_level > 3)
5777                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5778                 return FALSE;
5779         }
5780
5781         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5782                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5783                 if (cfg->verbose_level > 3)
5784                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5785                 return FALSE;
5786         }
5787
5788         param_size = mono_class_value_size (param_klass, &align);
5789         return_size = mono_class_value_size (return_klass, &align);
5790
5791         //We can do it if sizes match
5792         if (param_size == return_size) {
5793                 if (cfg->verbose_level > 3)
5794                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5795                 return TRUE;
5796         }
5797
5798         //No simple way to handle struct if sizes don't match
5799         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5800                 if (cfg->verbose_level > 3)
5801                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5802                 return FALSE;
5803         }
5804
5805         /*
5806          * Same reg size category.
5807          * A quick note on why we don't require widening here.
5808          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5809          *
5810          * Since the source value comes from a function argument, the JIT will already have
5811          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5812          */
5813         if (param_size <= 4 && return_size <= 4) {
5814                 if (cfg->verbose_level > 3)
5815                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5816                 return TRUE;
5817         }
5818
5819         return FALSE;
5820 }
5821
5822 static MonoInst*
5823 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5824 {
5825         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5826         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5827
5828         if (mini_is_gsharedvt_variable_type (fsig->ret))
5829                 return NULL;
5830
5831         //Valuetypes that are semantically equivalent or numbers than can be widened to
5832         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5833                 return args [0];
5834
5835         //Arrays of valuetypes that are semantically equivalent
5836         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5837                 return args [0];
5838
5839         return NULL;
5840 }
5841
5842 static MonoInst*
5843 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5844 {
5845 #ifdef MONO_ARCH_SIMD_INTRINSICS
5846         MonoInst *ins = NULL;
5847
5848         if (cfg->opt & MONO_OPT_SIMD) {
5849                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5850                 if (ins)
5851                         return ins;
5852         }
5853 #endif
5854
5855         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5856 }
5857
5858 static MonoInst*
5859 emit_memory_barrier (MonoCompile *cfg, int kind)
5860 {
5861         MonoInst *ins = NULL;
5862         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5863         MONO_ADD_INS (cfg->cbb, ins);
5864         ins->backend.memory_barrier_kind = kind;
5865
5866         return ins;
5867 }
5868
5869 static MonoInst*
5870 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5871 {
5872         MonoInst *ins = NULL;
5873         int opcode = 0;
5874
5875         /* The LLVM backend supports these intrinsics */
5876         if (cmethod->klass == mono_defaults.math_class) {
5877                 if (strcmp (cmethod->name, "Sin") == 0) {
5878                         opcode = OP_SIN;
5879                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5880                         opcode = OP_COS;
5881                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5882                         opcode = OP_SQRT;
5883                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5884                         opcode = OP_ABS;
5885                 }
5886
5887                 if (opcode && fsig->param_count == 1) {
5888                         MONO_INST_NEW (cfg, ins, opcode);
5889                         ins->type = STACK_R8;
5890                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5891                         ins->sreg1 = args [0]->dreg;
5892                         MONO_ADD_INS (cfg->cbb, ins);
5893                 }
5894
5895                 opcode = 0;
5896                 if (cfg->opt & MONO_OPT_CMOV) {
5897                         if (strcmp (cmethod->name, "Min") == 0) {
5898                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5899                                         opcode = OP_IMIN;
5900                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5901                                         opcode = OP_IMIN_UN;
5902                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5903                                         opcode = OP_LMIN;
5904                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5905                                         opcode = OP_LMIN_UN;
5906                         } else if (strcmp (cmethod->name, "Max") == 0) {
5907                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5908                                         opcode = OP_IMAX;
5909                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5910                                         opcode = OP_IMAX_UN;
5911                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5912                                         opcode = OP_LMAX;
5913                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5914                                         opcode = OP_LMAX_UN;
5915                         }
5916                 }
5917
5918                 if (opcode && fsig->param_count == 2) {
5919                         MONO_INST_NEW (cfg, ins, opcode);
5920                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5921                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5922                         ins->sreg1 = args [0]->dreg;
5923                         ins->sreg2 = args [1]->dreg;
5924                         MONO_ADD_INS (cfg->cbb, ins);
5925                 }
5926         }
5927
5928         return ins;
5929 }
5930
5931 static MonoInst*
5932 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5933 {
5934         if (cmethod->klass == mono_defaults.array_class) {
5935                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5936                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5937                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5938                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5939                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5940                         return emit_array_unsafe_mov (cfg, fsig, args);
5941         }
5942
5943         return NULL;
5944 }
5945
5946 static MonoInst*
5947 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5948 {
5949         MonoInst *ins = NULL;
5950
5951          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5952
5953         if (cmethod->klass == mono_defaults.string_class) {
5954                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5955                         int dreg = alloc_ireg (cfg);
5956                         int index_reg = alloc_preg (cfg);
5957                         int add_reg = alloc_preg (cfg);
5958
5959 #if SIZEOF_REGISTER == 8
5960                         if (COMPILE_LLVM (cfg)) {
5961                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5962                         } else {
5963                                 /* The array reg is 64 bits but the index reg is only 32 */
5964                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5965                         }
5966 #else
5967                         index_reg = args [1]->dreg;
5968 #endif
5969                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5970
5971 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5972                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5973                         add_reg = ins->dreg;
5974                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5975                                                                    add_reg, 0);
5976 #else
5977                         int mult_reg = alloc_preg (cfg);
5978                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5979                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5980                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5981                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5982 #endif
5983                         type_from_op (cfg, ins, NULL, NULL);
5984                         return ins;
5985                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5986                         int dreg = alloc_ireg (cfg);
5987                         /* Decompose later to allow more optimizations */
5988                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5989                         ins->type = STACK_I4;
5990                         ins->flags |= MONO_INST_FAULT;
5991                         cfg->cbb->has_array_access = TRUE;
5992                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5993
5994                         return ins;
5995                 } else
5996                         return NULL;
5997         } else if (cmethod->klass == mono_defaults.object_class) {
5998                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5999                         int dreg = alloc_ireg_ref (cfg);
6000                         int vt_reg = alloc_preg (cfg);
6001                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6002                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6003                         type_from_op (cfg, ins, NULL, NULL);
6004
6005                         return ins;
6006                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6007                         int dreg = alloc_ireg (cfg);
6008                         int t1 = alloc_ireg (cfg);
6009
6010                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6011                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6012                         ins->type = STACK_I4;
6013
6014                         return ins;
6015                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6016                         MONO_INST_NEW (cfg, ins, OP_NOP);
6017                         MONO_ADD_INS (cfg->cbb, ins);
6018                         return ins;
6019                 } else
6020                         return NULL;
6021         } else if (cmethod->klass == mono_defaults.array_class) {
6022                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6023                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6024                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6025                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6026
6027 #ifndef MONO_BIG_ARRAYS
6028                 /*
6029                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6030                  * Array methods.
6031                  */
6032                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6033                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6034                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6035                         int dreg = alloc_ireg (cfg);
6036                         int bounds_reg = alloc_ireg_mp (cfg);
6037                         MonoBasicBlock *end_bb, *szarray_bb;
6038                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6039
6040                         NEW_BBLOCK (cfg, end_bb);
6041                         NEW_BBLOCK (cfg, szarray_bb);
6042
6043                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6044                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6045                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6046                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6047                         /* Non-szarray case */
6048                         if (get_length)
6049                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6050                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6051                         else
6052                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6053                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6054                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6055                         MONO_START_BB (cfg, szarray_bb);
6056                         /* Szarray case */
6057                         if (get_length)
6058                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6059                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6060                         else
6061                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6062                         MONO_START_BB (cfg, end_bb);
6063
6064                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6065                         ins->type = STACK_I4;
6066
6067                         return ins;
6068                 }
6069 #endif
6070
6071                 if (cmethod->name [0] != 'g')
6072                         return NULL;
6073
6074                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6075                         int dreg = alloc_ireg (cfg);
6076                         int vtable_reg = alloc_preg (cfg);
6077                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6078                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6079                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6080                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6081                         type_from_op (cfg, ins, NULL, NULL);
6082
6083                         return ins;
6084                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6085                         int dreg = alloc_ireg (cfg);
6086
6087                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6088                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6089                         type_from_op (cfg, ins, NULL, NULL);
6090
6091                         return ins;
6092                 } else
6093                         return NULL;
6094         } else if (cmethod->klass == runtime_helpers_class) {
6095                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6096                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6097                         return ins;
6098                 } else
6099                         return NULL;
6100         } else if (cmethod->klass == mono_defaults.monitor_class) {
6101                 gboolean is_enter = FALSE;
6102
6103                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6104                         is_enter = TRUE;
6105
6106                 if (is_enter) {
6107                         /*
6108                          * To make async stack traces work, icalls which can block should have a wrapper.
6109                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6110                          */
6111                         MonoBasicBlock *end_bb;
6112
6113                         NEW_BBLOCK (cfg, end_bb);
6114
6115                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter_fast, args);
6116                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6117                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6118                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter, args);
6119                         MONO_START_BB (cfg, end_bb);
6120                         return ins;
6121                 }
6122         } else if (cmethod->klass == mono_defaults.thread_class) {
6123                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6124                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6125                         MONO_ADD_INS (cfg->cbb, ins);
6126                         return ins;
6127                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6128                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6129                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6130                         guint32 opcode = 0;
6131                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6132
6133                         if (fsig->params [0]->type == MONO_TYPE_I1)
6134                                 opcode = OP_LOADI1_MEMBASE;
6135                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6136                                 opcode = OP_LOADU1_MEMBASE;
6137                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6138                                 opcode = OP_LOADI2_MEMBASE;
6139                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6140                                 opcode = OP_LOADU2_MEMBASE;
6141                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6142                                 opcode = OP_LOADI4_MEMBASE;
6143                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6144                                 opcode = OP_LOADU4_MEMBASE;
6145                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6146                                 opcode = OP_LOADI8_MEMBASE;
6147                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6148                                 opcode = OP_LOADR4_MEMBASE;
6149                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6150                                 opcode = OP_LOADR8_MEMBASE;
6151                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6152                                 opcode = OP_LOAD_MEMBASE;
6153
6154                         if (opcode) {
6155                                 MONO_INST_NEW (cfg, ins, opcode);
6156                                 ins->inst_basereg = args [0]->dreg;
6157                                 ins->inst_offset = 0;
6158                                 MONO_ADD_INS (cfg->cbb, ins);
6159
6160                                 switch (fsig->params [0]->type) {
6161                                 case MONO_TYPE_I1:
6162                                 case MONO_TYPE_U1:
6163                                 case MONO_TYPE_I2:
6164                                 case MONO_TYPE_U2:
6165                                 case MONO_TYPE_I4:
6166                                 case MONO_TYPE_U4:
6167                                         ins->dreg = mono_alloc_ireg (cfg);
6168                                         ins->type = STACK_I4;
6169                                         break;
6170                                 case MONO_TYPE_I8:
6171                                 case MONO_TYPE_U8:
6172                                         ins->dreg = mono_alloc_lreg (cfg);
6173                                         ins->type = STACK_I8;
6174                                         break;
6175                                 case MONO_TYPE_I:
6176                                 case MONO_TYPE_U:
6177                                         ins->dreg = mono_alloc_ireg (cfg);
6178 #if SIZEOF_REGISTER == 8
6179                                         ins->type = STACK_I8;
6180 #else
6181                                         ins->type = STACK_I4;
6182 #endif
6183                                         break;
6184                                 case MONO_TYPE_R4:
6185                                 case MONO_TYPE_R8:
6186                                         ins->dreg = mono_alloc_freg (cfg);
6187                                         ins->type = STACK_R8;
6188                                         break;
6189                                 default:
6190                                         g_assert (mini_type_is_reference (fsig->params [0]));
6191                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6192                                         ins->type = STACK_OBJ;
6193                                         break;
6194                                 }
6195
6196                                 if (opcode == OP_LOADI8_MEMBASE)
6197                                         ins = mono_decompose_opcode (cfg, ins);
6198
6199                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6200
6201                                 return ins;
6202                         }
6203                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6204                         guint32 opcode = 0;
6205                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6206
6207                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6208                                 opcode = OP_STOREI1_MEMBASE_REG;
6209                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6210                                 opcode = OP_STOREI2_MEMBASE_REG;
6211                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6212                                 opcode = OP_STOREI4_MEMBASE_REG;
6213                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6214                                 opcode = OP_STOREI8_MEMBASE_REG;
6215                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6216                                 opcode = OP_STORER4_MEMBASE_REG;
6217                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6218                                 opcode = OP_STORER8_MEMBASE_REG;
6219                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6220                                 opcode = OP_STORE_MEMBASE_REG;
6221
6222                         if (opcode) {
6223                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6224
6225                                 MONO_INST_NEW (cfg, ins, opcode);
6226                                 ins->sreg1 = args [1]->dreg;
6227                                 ins->inst_destbasereg = args [0]->dreg;
6228                                 ins->inst_offset = 0;
6229                                 MONO_ADD_INS (cfg->cbb, ins);
6230
6231                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6232                                         ins = mono_decompose_opcode (cfg, ins);
6233
6234                                 return ins;
6235                         }
6236                 }
6237         } else if (cmethod->klass->image == mono_defaults.corlib &&
6238                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6239                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6240                 ins = NULL;
6241
6242 #if SIZEOF_REGISTER == 8
6243                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6244                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6245                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6246                                 ins->dreg = mono_alloc_preg (cfg);
6247                                 ins->sreg1 = args [0]->dreg;
6248                                 ins->type = STACK_I8;
6249                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6250                                 MONO_ADD_INS (cfg->cbb, ins);
6251                         } else {
6252                                 MonoInst *load_ins;
6253
6254                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6255
6256                                 /* 64 bit reads are already atomic */
6257                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6258                                 load_ins->dreg = mono_alloc_preg (cfg);
6259                                 load_ins->inst_basereg = args [0]->dreg;
6260                                 load_ins->inst_offset = 0;
6261                                 load_ins->type = STACK_I8;
6262                                 MONO_ADD_INS (cfg->cbb, load_ins);
6263
6264                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6265
6266                                 ins = load_ins;
6267                         }
6268                 }
6269 #endif
6270
6271                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6272                         MonoInst *ins_iconst;
6273                         guint32 opcode = 0;
6274
6275                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6276                                 opcode = OP_ATOMIC_ADD_I4;
6277                                 cfg->has_atomic_add_i4 = TRUE;
6278                         }
6279 #if SIZEOF_REGISTER == 8
6280                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6281                                 opcode = OP_ATOMIC_ADD_I8;
6282 #endif
6283                         if (opcode) {
6284                                 if (!mono_arch_opcode_supported (opcode))
6285                                         return NULL;
6286                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6287                                 ins_iconst->inst_c0 = 1;
6288                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6289                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6290
6291                                 MONO_INST_NEW (cfg, ins, opcode);
6292                                 ins->dreg = mono_alloc_ireg (cfg);
6293                                 ins->inst_basereg = args [0]->dreg;
6294                                 ins->inst_offset = 0;
6295                                 ins->sreg2 = ins_iconst->dreg;
6296                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6297                                 MONO_ADD_INS (cfg->cbb, ins);
6298                         }
6299                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6300                         MonoInst *ins_iconst;
6301                         guint32 opcode = 0;
6302
6303                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6304                                 opcode = OP_ATOMIC_ADD_I4;
6305                                 cfg->has_atomic_add_i4 = TRUE;
6306                         }
6307 #if SIZEOF_REGISTER == 8
6308                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6309                                 opcode = OP_ATOMIC_ADD_I8;
6310 #endif
6311                         if (opcode) {
6312                                 if (!mono_arch_opcode_supported (opcode))
6313                                         return NULL;
6314                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6315                                 ins_iconst->inst_c0 = -1;
6316                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6317                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6318
6319                                 MONO_INST_NEW (cfg, ins, opcode);
6320                                 ins->dreg = mono_alloc_ireg (cfg);
6321                                 ins->inst_basereg = args [0]->dreg;
6322                                 ins->inst_offset = 0;
6323                                 ins->sreg2 = ins_iconst->dreg;
6324                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6325                                 MONO_ADD_INS (cfg->cbb, ins);
6326                         }
6327                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6328                         guint32 opcode = 0;
6329
6330                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6331                                 opcode = OP_ATOMIC_ADD_I4;
6332                                 cfg->has_atomic_add_i4 = TRUE;
6333                         }
6334 #if SIZEOF_REGISTER == 8
6335                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6336                                 opcode = OP_ATOMIC_ADD_I8;
6337 #endif
6338                         if (opcode) {
6339                                 if (!mono_arch_opcode_supported (opcode))
6340                                         return NULL;
6341                                 MONO_INST_NEW (cfg, ins, opcode);
6342                                 ins->dreg = mono_alloc_ireg (cfg);
6343                                 ins->inst_basereg = args [0]->dreg;
6344                                 ins->inst_offset = 0;
6345                                 ins->sreg2 = args [1]->dreg;
6346                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6347                                 MONO_ADD_INS (cfg->cbb, ins);
6348                         }
6349                 }
6350                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6351                         MonoInst *f2i = NULL, *i2f;
6352                         guint32 opcode, f2i_opcode, i2f_opcode;
6353                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6354                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6355
6356                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6357                             fsig->params [0]->type == MONO_TYPE_R4) {
6358                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6359                                 f2i_opcode = OP_MOVE_F_TO_I4;
6360                                 i2f_opcode = OP_MOVE_I4_TO_F;
6361                                 cfg->has_atomic_exchange_i4 = TRUE;
6362                         }
6363 #if SIZEOF_REGISTER == 8
6364                         else if (is_ref ||
6365                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6366                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6367                                  fsig->params [0]->type == MONO_TYPE_I) {
6368                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6369                                 f2i_opcode = OP_MOVE_F_TO_I8;
6370                                 i2f_opcode = OP_MOVE_I8_TO_F;
6371                         }
6372 #else
6373                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6374                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6375                                 cfg->has_atomic_exchange_i4 = TRUE;
6376                         }
6377 #endif
6378                         else
6379                                 return NULL;
6380
6381                         if (!mono_arch_opcode_supported (opcode))
6382                                 return NULL;
6383
6384                         if (is_float) {
6385                                 /* TODO: Decompose these opcodes instead of bailing here. */
6386                                 if (COMPILE_SOFT_FLOAT (cfg))
6387                                         return NULL;
6388
6389                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6390                                 f2i->dreg = mono_alloc_ireg (cfg);
6391                                 f2i->sreg1 = args [1]->dreg;
6392                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6393                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6394                                 MONO_ADD_INS (cfg->cbb, f2i);
6395                         }
6396
6397                         MONO_INST_NEW (cfg, ins, opcode);
6398                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6399                         ins->inst_basereg = args [0]->dreg;
6400                         ins->inst_offset = 0;
6401                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6402                         MONO_ADD_INS (cfg->cbb, ins);
6403
6404                         switch (fsig->params [0]->type) {
6405                         case MONO_TYPE_I4:
6406                                 ins->type = STACK_I4;
6407                                 break;
6408                         case MONO_TYPE_I8:
6409                                 ins->type = STACK_I8;
6410                                 break;
6411                         case MONO_TYPE_I:
6412 #if SIZEOF_REGISTER == 8
6413                                 ins->type = STACK_I8;
6414 #else
6415                                 ins->type = STACK_I4;
6416 #endif
6417                                 break;
6418                         case MONO_TYPE_R4:
6419                         case MONO_TYPE_R8:
6420                                 ins->type = STACK_R8;
6421                                 break;
6422                         default:
6423                                 g_assert (mini_type_is_reference (fsig->params [0]));
6424                                 ins->type = STACK_OBJ;
6425                                 break;
6426                         }
6427
6428                         if (is_float) {
6429                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6430                                 i2f->dreg = mono_alloc_freg (cfg);
6431                                 i2f->sreg1 = ins->dreg;
6432                                 i2f->type = STACK_R8;
6433                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6434                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6435                                 MONO_ADD_INS (cfg->cbb, i2f);
6436
6437                                 ins = i2f;
6438                         }
6439
6440                         if (cfg->gen_write_barriers && is_ref)
6441                                 emit_write_barrier (cfg, args [0], args [1]);
6442                 }
6443                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6444                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6445                         guint32 opcode, f2i_opcode, i2f_opcode;
6446                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6447                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6448
6449                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6450                             fsig->params [1]->type == MONO_TYPE_R4) {
6451                                 opcode = OP_ATOMIC_CAS_I4;
6452                                 f2i_opcode = OP_MOVE_F_TO_I4;
6453                                 i2f_opcode = OP_MOVE_I4_TO_F;
6454                                 cfg->has_atomic_cas_i4 = TRUE;
6455                         }
6456 #if SIZEOF_REGISTER == 8
6457                         else if (is_ref ||
6458                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6459                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6460                                  fsig->params [1]->type == MONO_TYPE_I) {
6461                                 opcode = OP_ATOMIC_CAS_I8;
6462                                 f2i_opcode = OP_MOVE_F_TO_I8;
6463                                 i2f_opcode = OP_MOVE_I8_TO_F;
6464                         }
6465 #else
6466                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6467                                 opcode = OP_ATOMIC_CAS_I4;
6468                                 cfg->has_atomic_cas_i4 = TRUE;
6469                         }
6470 #endif
6471                         else
6472                                 return NULL;
6473
6474                         if (!mono_arch_opcode_supported (opcode))
6475                                 return NULL;
6476
6477                         if (is_float) {
6478                                 /* TODO: Decompose these opcodes instead of bailing here. */
6479                                 if (COMPILE_SOFT_FLOAT (cfg))
6480                                         return NULL;
6481
6482                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6483                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6484                                 f2i_new->sreg1 = args [1]->dreg;
6485                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6486                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6487                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6488
6489                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6490                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6491                                 f2i_cmp->sreg1 = args [2]->dreg;
6492                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6493                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6494                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6495                         }
6496
6497                         MONO_INST_NEW (cfg, ins, opcode);
6498                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6499                         ins->sreg1 = args [0]->dreg;
6500                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6501                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6502                         MONO_ADD_INS (cfg->cbb, ins);
6503
6504                         switch (fsig->params [1]->type) {
6505                         case MONO_TYPE_I4:
6506                                 ins->type = STACK_I4;
6507                                 break;
6508                         case MONO_TYPE_I8:
6509                                 ins->type = STACK_I8;
6510                                 break;
6511                         case MONO_TYPE_I:
6512 #if SIZEOF_REGISTER == 8
6513                                 ins->type = STACK_I8;
6514 #else
6515                                 ins->type = STACK_I4;
6516 #endif
6517                                 break;
6518                         case MONO_TYPE_R4:
6519                                 ins->type = cfg->r4_stack_type;
6520                                 break;
6521                         case MONO_TYPE_R8:
6522                                 ins->type = STACK_R8;
6523                                 break;
6524                         default:
6525                                 g_assert (mini_type_is_reference (fsig->params [1]));
6526                                 ins->type = STACK_OBJ;
6527                                 break;
6528                         }
6529
6530                         if (is_float) {
6531                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6532                                 i2f->dreg = mono_alloc_freg (cfg);
6533                                 i2f->sreg1 = ins->dreg;
6534                                 i2f->type = STACK_R8;
6535                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6536                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6537                                 MONO_ADD_INS (cfg->cbb, i2f);
6538
6539                                 ins = i2f;
6540                         }
6541
6542                         if (cfg->gen_write_barriers && is_ref)
6543                                 emit_write_barrier (cfg, args [0], args [1]);
6544                 }
6545                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6546                          fsig->params [1]->type == MONO_TYPE_I4) {
6547                         MonoInst *cmp, *ceq;
6548
6549                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6550                                 return NULL;
6551
6552                         /* int32 r = CAS (location, value, comparand); */
6553                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6554                         ins->dreg = alloc_ireg (cfg);
6555                         ins->sreg1 = args [0]->dreg;
6556                         ins->sreg2 = args [1]->dreg;
6557                         ins->sreg3 = args [2]->dreg;
6558                         ins->type = STACK_I4;
6559                         MONO_ADD_INS (cfg->cbb, ins);
6560
6561                         /* bool result = r == comparand; */
6562                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6563                         cmp->sreg1 = ins->dreg;
6564                         cmp->sreg2 = args [2]->dreg;
6565                         cmp->type = STACK_I4;
6566                         MONO_ADD_INS (cfg->cbb, cmp);
6567
6568                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6569                         ceq->dreg = alloc_ireg (cfg);
6570                         ceq->type = STACK_I4;
6571                         MONO_ADD_INS (cfg->cbb, ceq);
6572
6573                         /* *success = result; */
6574                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6575
6576                         cfg->has_atomic_cas_i4 = TRUE;
6577                 }
6578                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6579                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6580
6581                 if (ins)
6582                         return ins;
6583         } else if (cmethod->klass->image == mono_defaults.corlib &&
6584                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6585                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6586                 ins = NULL;
6587
6588                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6589                         guint32 opcode = 0;
6590                         MonoType *t = fsig->params [0];
6591                         gboolean is_ref;
6592                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6593
6594                         g_assert (t->byref);
6595                         /* t is a byref type, so the reference check is more complicated */
6596                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6597                         if (t->type == MONO_TYPE_I1)
6598                                 opcode = OP_ATOMIC_LOAD_I1;
6599                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6600                                 opcode = OP_ATOMIC_LOAD_U1;
6601                         else if (t->type == MONO_TYPE_I2)
6602                                 opcode = OP_ATOMIC_LOAD_I2;
6603                         else if (t->type == MONO_TYPE_U2)
6604                                 opcode = OP_ATOMIC_LOAD_U2;
6605                         else if (t->type == MONO_TYPE_I4)
6606                                 opcode = OP_ATOMIC_LOAD_I4;
6607                         else if (t->type == MONO_TYPE_U4)
6608                                 opcode = OP_ATOMIC_LOAD_U4;
6609                         else if (t->type == MONO_TYPE_R4)
6610                                 opcode = OP_ATOMIC_LOAD_R4;
6611                         else if (t->type == MONO_TYPE_R8)
6612                                 opcode = OP_ATOMIC_LOAD_R8;
6613 #if SIZEOF_REGISTER == 8
6614                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6615                                 opcode = OP_ATOMIC_LOAD_I8;
6616                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6617                                 opcode = OP_ATOMIC_LOAD_U8;
6618 #else
6619                         else if (t->type == MONO_TYPE_I)
6620                                 opcode = OP_ATOMIC_LOAD_I4;
6621                         else if (is_ref || t->type == MONO_TYPE_U)
6622                                 opcode = OP_ATOMIC_LOAD_U4;
6623 #endif
6624
6625                         if (opcode) {
6626                                 if (!mono_arch_opcode_supported (opcode))
6627                                         return NULL;
6628
6629                                 MONO_INST_NEW (cfg, ins, opcode);
6630                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6631                                 ins->sreg1 = args [0]->dreg;
6632                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6633                                 MONO_ADD_INS (cfg->cbb, ins);
6634
6635                                 switch (t->type) {
6636                                 case MONO_TYPE_BOOLEAN:
6637                                 case MONO_TYPE_I1:
6638                                 case MONO_TYPE_U1:
6639                                 case MONO_TYPE_I2:
6640                                 case MONO_TYPE_U2:
6641                                 case MONO_TYPE_I4:
6642                                 case MONO_TYPE_U4:
6643                                         ins->type = STACK_I4;
6644                                         break;
6645                                 case MONO_TYPE_I8:
6646                                 case MONO_TYPE_U8:
6647                                         ins->type = STACK_I8;
6648                                         break;
6649                                 case MONO_TYPE_I:
6650                                 case MONO_TYPE_U:
6651 #if SIZEOF_REGISTER == 8
6652                                         ins->type = STACK_I8;
6653 #else
6654                                         ins->type = STACK_I4;
6655 #endif
6656                                         break;
6657                                 case MONO_TYPE_R4:
6658                                         ins->type = cfg->r4_stack_type;
6659                                         break;
6660                                 case MONO_TYPE_R8:
6661                                         ins->type = STACK_R8;
6662                                         break;
6663                                 default:
6664                                         g_assert (is_ref);
6665                                         ins->type = STACK_OBJ;
6666                                         break;
6667                                 }
6668                         }
6669                 }
6670
6671                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6672                         guint32 opcode = 0;
6673                         MonoType *t = fsig->params [0];
6674                         gboolean is_ref;
6675
6676                         g_assert (t->byref);
6677                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6678                         if (t->type == MONO_TYPE_I1)
6679                                 opcode = OP_ATOMIC_STORE_I1;
6680                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6681                                 opcode = OP_ATOMIC_STORE_U1;
6682                         else if (t->type == MONO_TYPE_I2)
6683                                 opcode = OP_ATOMIC_STORE_I2;
6684                         else if (t->type == MONO_TYPE_U2)
6685                                 opcode = OP_ATOMIC_STORE_U2;
6686                         else if (t->type == MONO_TYPE_I4)
6687                                 opcode = OP_ATOMIC_STORE_I4;
6688                         else if (t->type == MONO_TYPE_U4)
6689                                 opcode = OP_ATOMIC_STORE_U4;
6690                         else if (t->type == MONO_TYPE_R4)
6691                                 opcode = OP_ATOMIC_STORE_R4;
6692                         else if (t->type == MONO_TYPE_R8)
6693                                 opcode = OP_ATOMIC_STORE_R8;
6694 #if SIZEOF_REGISTER == 8
6695                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6696                                 opcode = OP_ATOMIC_STORE_I8;
6697                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6698                                 opcode = OP_ATOMIC_STORE_U8;
6699 #else
6700                         else if (t->type == MONO_TYPE_I)
6701                                 opcode = OP_ATOMIC_STORE_I4;
6702                         else if (is_ref || t->type == MONO_TYPE_U)
6703                                 opcode = OP_ATOMIC_STORE_U4;
6704 #endif
6705
6706                         if (opcode) {
6707                                 if (!mono_arch_opcode_supported (opcode))
6708                                         return NULL;
6709
6710                                 MONO_INST_NEW (cfg, ins, opcode);
6711                                 ins->dreg = args [0]->dreg;
6712                                 ins->sreg1 = args [1]->dreg;
6713                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6714                                 MONO_ADD_INS (cfg->cbb, ins);
6715
6716                                 if (cfg->gen_write_barriers && is_ref)
6717                                         emit_write_barrier (cfg, args [0], args [1]);
6718                         }
6719                 }
6720
6721                 if (ins)
6722                         return ins;
6723         } else if (cmethod->klass->image == mono_defaults.corlib &&
6724                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6725                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6726                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6727                         if (should_insert_brekpoint (cfg->method)) {
6728                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6729                         } else {
6730                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6731                                 MONO_ADD_INS (cfg->cbb, ins);
6732                         }
6733                         return ins;
6734                 }
6735         } else if (cmethod->klass->image == mono_defaults.corlib &&
6736                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6737                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6738                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6739 #ifdef TARGET_WIN32
6740                         EMIT_NEW_ICONST (cfg, ins, 1);
6741 #else
6742                         EMIT_NEW_ICONST (cfg, ins, 0);
6743 #endif
6744                 }
6745         } else if (cmethod->klass->image == mono_defaults.corlib &&
6746                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6747                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6748                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6749                         /* No stack walks are currently available, so implement this as an intrinsic */
6750                         MonoInst *assembly_ins;
6751
6752                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6753                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6754                         return ins;
6755                 }
6756         } else if (cmethod->klass->image == mono_defaults.corlib &&
6757                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6758                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6759                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6760                         /* No stack walks are currently available, so implement this as an intrinsic */
6761                         MonoInst *method_ins;
6762                         MonoMethod *declaring = cfg->method;
6763
6764                         /* This returns the declaring generic method */
6765                         if (declaring->is_inflated)
6766                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6767                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6768                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6769                         cfg->no_inline = TRUE;
6770                         if (cfg->method != cfg->current_method)
6771                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6772                         return ins;
6773                 }
6774         } else if (cmethod->klass == mono_defaults.math_class) {
6775                 /*
6776                  * There is general branchless code for Min/Max, but it does not work for
6777                  * all inputs:
6778                  * http://everything2.com/?node_id=1051618
6779                  */
6780         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6781                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6782                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6783                                 !strcmp (cmethod->klass->name, "Selector")) ||
6784                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
6785                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
6786                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6787                                 !strcmp (cmethod->klass->name, "Selector"))
6788                            ) {
6789                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
6790                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6791                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6792                     cfg->compile_aot) {
6793                         MonoInst *pi;
6794                         MonoJumpInfoToken *ji;
6795                         char *s;
6796
6797                         if (args [0]->opcode == OP_GOT_ENTRY) {
6798                                 pi = (MonoInst *)args [0]->inst_p1;
6799                                 g_assert (pi->opcode == OP_PATCH_INFO);
6800                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6801                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6802                         } else {
6803                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6804                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6805                         }
6806
6807                         NULLIFY_INS (args [0]);
6808
6809                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6810                         return_val_if_nok (&cfg->error, NULL);
6811
6812                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6813                         ins->dreg = mono_alloc_ireg (cfg);
6814                         // FIXME: Leaks
6815                         ins->inst_p0 = s;
6816                         MONO_ADD_INS (cfg->cbb, ins);
6817                         return ins;
6818                 }
6819         }
6820
6821 #ifdef MONO_ARCH_SIMD_INTRINSICS
6822         if (cfg->opt & MONO_OPT_SIMD) {
6823                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6824                 if (ins)
6825                         return ins;
6826         }
6827 #endif
6828
6829         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6830         if (ins)
6831                 return ins;
6832
6833         if (COMPILE_LLVM (cfg)) {
6834                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6835                 if (ins)
6836                         return ins;
6837         }
6838
6839         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6840 }
6841
6842 /*
6843  * This entry point could be used later for arbitrary method
6844  * redirection.
6845  */
6846 inline static MonoInst*
6847 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6848                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6849 {
6850         if (method->klass == mono_defaults.string_class) {
6851                 /* managed string allocation support */
6852                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6853                         MonoInst *iargs [2];
6854                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6855                         MonoMethod *managed_alloc = NULL;
6856
6857                         g_assert (vtable); /*Should not fail since it System.String*/
6858 #ifndef MONO_CROSS_COMPILE
6859                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6860 #endif
6861                         if (!managed_alloc)
6862                                 return NULL;
6863                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6864                         iargs [1] = args [0];
6865                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6866                 }
6867         }
6868         return NULL;
6869 }
6870
6871 static void
6872 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6873 {
6874         MonoInst *store, *temp;
6875         int i;
6876
6877         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6878                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6879
6880                 /*
6881                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6882                  * would be different than the MonoInst's used to represent arguments, and
6883                  * the ldelema implementation can't deal with that.
6884                  * Solution: When ldelema is used on an inline argument, create a var for
6885                  * it, emit ldelema on that var, and emit the saving code below in
6886                  * inline_method () if needed.
6887                  */
6888                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6889                 cfg->args [i] = temp;
6890                 /* This uses cfg->args [i] which is set by the preceeding line */
6891                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6892                 store->cil_code = sp [0]->cil_code;
6893                 sp++;
6894         }
6895 }
6896
6897 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6898 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6899
6900 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6901 static gboolean
6902 check_inline_called_method_name_limit (MonoMethod *called_method)
6903 {
6904         int strncmp_result;
6905         static const char *limit = NULL;
6906
6907         if (limit == NULL) {
6908                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6909
6910                 if (limit_string != NULL)
6911                         limit = limit_string;
6912                 else
6913                         limit = "";
6914         }
6915
6916         if (limit [0] != '\0') {
6917                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6918
6919                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6920                 g_free (called_method_name);
6921
6922                 //return (strncmp_result <= 0);
6923                 return (strncmp_result == 0);
6924         } else {
6925                 return TRUE;
6926         }
6927 }
6928 #endif
6929
6930 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6931 static gboolean
6932 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6933 {
6934         int strncmp_result;
6935         static const char *limit = NULL;
6936
6937         if (limit == NULL) {
6938                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6939                 if (limit_string != NULL) {
6940                         limit = limit_string;
6941                 } else {
6942                         limit = "";
6943                 }
6944         }
6945
6946         if (limit [0] != '\0') {
6947                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6948
6949                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6950                 g_free (caller_method_name);
6951
6952                 //return (strncmp_result <= 0);
6953                 return (strncmp_result == 0);
6954         } else {
6955                 return TRUE;
6956         }
6957 }
6958 #endif
6959
6960 static void
6961 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6962 {
6963         static double r8_0 = 0.0;
6964         static float r4_0 = 0.0;
6965         MonoInst *ins;
6966         int t;
6967
6968         rtype = mini_get_underlying_type (rtype);
6969         t = rtype->type;
6970
6971         if (rtype->byref) {
6972                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6973         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6974                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6975         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6976                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6977         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6978                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6979                 ins->type = STACK_R4;
6980                 ins->inst_p0 = (void*)&r4_0;
6981                 ins->dreg = dreg;
6982                 MONO_ADD_INS (cfg->cbb, ins);
6983         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6984                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6985                 ins->type = STACK_R8;
6986                 ins->inst_p0 = (void*)&r8_0;
6987                 ins->dreg = dreg;
6988                 MONO_ADD_INS (cfg->cbb, ins);
6989         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6990                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6991                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6992         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6993                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6994         } else {
6995                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6996         }
6997 }
6998
6999 static void
7000 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7001 {
7002         int t;
7003
7004         rtype = mini_get_underlying_type (rtype);
7005         t = rtype->type;
7006
7007         if (rtype->byref) {
7008                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7009         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7010                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7011         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7012                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7013         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7014                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7015         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7016                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7017         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7018                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7019                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7020         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7021                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7022         } else {
7023                 emit_init_rvar (cfg, dreg, rtype);
7024         }
7025 }
7026
7027 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7028 static void
7029 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7030 {
7031         MonoInst *var = cfg->locals [local];
7032         if (COMPILE_SOFT_FLOAT (cfg)) {
7033                 MonoInst *store;
7034                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7035                 emit_init_rvar (cfg, reg, type);
7036                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7037         } else {
7038                 if (init)
7039                         emit_init_rvar (cfg, var->dreg, type);
7040                 else
7041                         emit_dummy_init_rvar (cfg, var->dreg, type);
7042         }
7043 }
7044
7045 /*
7046  * inline_method:
7047  *
7048  *   Return the cost of inlining CMETHOD.
7049  */
7050 static int
7051 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7052                            guchar *ip, guint real_offset, gboolean inline_always)
7053 {
7054         MonoError error;
7055         MonoInst *ins, *rvar = NULL;
7056         MonoMethodHeader *cheader;
7057         MonoBasicBlock *ebblock, *sbblock;
7058         int i, costs;
7059         MonoMethod *prev_inlined_method;
7060         MonoInst **prev_locals, **prev_args;
7061         MonoType **prev_arg_types;
7062         guint prev_real_offset;
7063         GHashTable *prev_cbb_hash;
7064         MonoBasicBlock **prev_cil_offset_to_bb;
7065         MonoBasicBlock *prev_cbb;
7066         unsigned char* prev_cil_start;
7067         guint32 prev_cil_offset_to_bb_len;
7068         MonoMethod *prev_current_method;
7069         MonoGenericContext *prev_generic_context;
7070         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7071
7072         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7073
7074 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7075         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7076                 return 0;
7077 #endif
7078 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7079         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7080                 return 0;
7081 #endif
7082
7083         if (!fsig)
7084                 fsig = mono_method_signature (cmethod);
7085
7086         if (cfg->verbose_level > 2)
7087                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7088
7089         if (!cmethod->inline_info) {
7090                 cfg->stat_inlineable_methods++;
7091                 cmethod->inline_info = 1;
7092         }
7093
7094         /* allocate local variables */
7095         cheader = mono_method_get_header_checked (cmethod, &error);
7096         if (!cheader) {
7097                 if (inline_always) {
7098                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7099                         mono_error_move (&cfg->error, &error);
7100                 } else {
7101                         mono_error_cleanup (&error);
7102                 }
7103                 return 0;
7104         }
7105
7106         /*Must verify before creating locals as it can cause the JIT to assert.*/
7107         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7108                 mono_metadata_free_mh (cheader);
7109                 return 0;
7110         }
7111
7112         /* allocate space to store the return value */
7113         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7114                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7115         }
7116
7117         prev_locals = cfg->locals;
7118         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7119         for (i = 0; i < cheader->num_locals; ++i)
7120                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7121
7122         /* allocate start and end blocks */
7123         /* This is needed so if the inline is aborted, we can clean up */
7124         NEW_BBLOCK (cfg, sbblock);
7125         sbblock->real_offset = real_offset;
7126
7127         NEW_BBLOCK (cfg, ebblock);
7128         ebblock->block_num = cfg->num_bblocks++;
7129         ebblock->real_offset = real_offset;
7130
7131         prev_args = cfg->args;
7132         prev_arg_types = cfg->arg_types;
7133         prev_inlined_method = cfg->inlined_method;
7134         cfg->inlined_method = cmethod;
7135         cfg->ret_var_set = FALSE;
7136         cfg->inline_depth ++;
7137         prev_real_offset = cfg->real_offset;
7138         prev_cbb_hash = cfg->cbb_hash;
7139         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7140         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7141         prev_cil_start = cfg->cil_start;
7142         prev_cbb = cfg->cbb;
7143         prev_current_method = cfg->current_method;
7144         prev_generic_context = cfg->generic_context;
7145         prev_ret_var_set = cfg->ret_var_set;
7146         prev_disable_inline = cfg->disable_inline;
7147
7148         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7149                 virtual_ = TRUE;
7150
7151         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7152
7153         ret_var_set = cfg->ret_var_set;
7154
7155         cfg->inlined_method = prev_inlined_method;
7156         cfg->real_offset = prev_real_offset;
7157         cfg->cbb_hash = prev_cbb_hash;
7158         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7159         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7160         cfg->cil_start = prev_cil_start;
7161         cfg->locals = prev_locals;
7162         cfg->args = prev_args;
7163         cfg->arg_types = prev_arg_types;
7164         cfg->current_method = prev_current_method;
7165         cfg->generic_context = prev_generic_context;
7166         cfg->ret_var_set = prev_ret_var_set;
7167         cfg->disable_inline = prev_disable_inline;
7168         cfg->inline_depth --;
7169
7170         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7171                 if (cfg->verbose_level > 2)
7172                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7173
7174                 cfg->stat_inlined_methods++;
7175
7176                 /* always add some code to avoid block split failures */
7177                 MONO_INST_NEW (cfg, ins, OP_NOP);
7178                 MONO_ADD_INS (prev_cbb, ins);
7179
7180                 prev_cbb->next_bb = sbblock;
7181                 link_bblock (cfg, prev_cbb, sbblock);
7182
7183                 /*
7184                  * Get rid of the begin and end bblocks if possible to aid local
7185                  * optimizations.
7186                  */
7187                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7188
7189                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7190                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7191
7192                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7193                         MonoBasicBlock *prev = ebblock->in_bb [0];
7194
7195                         if (prev->next_bb == ebblock) {
7196                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7197                                 cfg->cbb = prev;
7198                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7199                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7200                                         cfg->cbb = prev_cbb;
7201                                 }
7202                         } else {
7203                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7204                                 cfg->cbb = ebblock;
7205                         }
7206                 } else {
7207                         /*
7208                          * Its possible that the rvar is set in some prev bblock, but not in others.
7209                          * (#1835).
7210                          */
7211                         if (rvar) {
7212                                 MonoBasicBlock *bb;
7213
7214                                 for (i = 0; i < ebblock->in_count; ++i) {
7215                                         bb = ebblock->in_bb [i];
7216
7217                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7218                                                 cfg->cbb = bb;
7219
7220                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7221                                         }
7222                                 }
7223                         }
7224
7225                         cfg->cbb = ebblock;
7226                 }
7227
7228                 if (rvar) {
7229                         /*
7230                          * If the inlined method contains only a throw, then the ret var is not
7231                          * set, so set it to a dummy value.
7232                          */
7233                         if (!ret_var_set)
7234                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7235
7236                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7237                         *sp++ = ins;
7238                 }
7239                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7240                 return costs + 1;
7241         } else {
7242                 if (cfg->verbose_level > 2)
7243                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7244                 cfg->exception_type = MONO_EXCEPTION_NONE;
7245
7246                 /* This gets rid of the newly added bblocks */
7247                 cfg->cbb = prev_cbb;
7248         }
7249         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7250         return 0;
7251 }
7252
7253 /*
7254  * Some of these comments may well be out-of-date.
7255  * Design decisions: we do a single pass over the IL code (and we do bblock
7256  * splitting/merging in the few cases when it's required: a back jump to an IL
7257  * address that was not already seen as bblock starting point).
7258  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7259  * Complex operations are decomposed in simpler ones right away. We need to let the
7260  * arch-specific code peek and poke inside this process somehow (except when the
7261  * optimizations can take advantage of the full semantic info of coarse opcodes).
7262  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7263  * MonoInst->opcode initially is the IL opcode or some simplification of that
7264  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7265  * opcode with value bigger than OP_LAST.
7266  * At this point the IR can be handed over to an interpreter, a dumb code generator
7267  * or to the optimizing code generator that will translate it to SSA form.
7268  *
7269  * Profiling directed optimizations.
7270  * We may compile by default with few or no optimizations and instrument the code
7271  * or the user may indicate what methods to optimize the most either in a config file
7272  * or through repeated runs where the compiler applies offline the optimizations to
7273  * each method and then decides if it was worth it.
7274  */
7275
7276 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7277 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7278 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7279 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7280 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7281 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7282 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7283 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7284
7285 /* offset from br.s -> br like opcodes */
7286 #define BIG_BRANCH_OFFSET 13
7287
7288 static gboolean
7289 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7290 {
7291         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7292
7293         return b == NULL || b == bb;
7294 }
7295
7296 static int
7297 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7298 {
7299         unsigned char *ip = start;
7300         unsigned char *target;
7301         int i;
7302         guint cli_addr;
7303         MonoBasicBlock *bblock;
7304         const MonoOpcode *opcode;
7305
7306         while (ip < end) {
7307                 cli_addr = ip - start;
7308                 i = mono_opcode_value ((const guint8 **)&ip, end);
7309                 if (i < 0)
7310                         UNVERIFIED;
7311                 opcode = &mono_opcodes [i];
7312                 switch (opcode->argument) {
7313                 case MonoInlineNone:
7314                         ip++;
7315                         break;
7316                 case MonoInlineString:
7317                 case MonoInlineType:
7318                 case MonoInlineField:
7319                 case MonoInlineMethod:
7320                 case MonoInlineTok:
7321                 case MonoInlineSig:
7322                 case MonoShortInlineR:
7323                 case MonoInlineI:
7324                         ip += 5;
7325                         break;
7326                 case MonoInlineVar:
7327                         ip += 3;
7328                         break;
7329                 case MonoShortInlineVar:
7330                 case MonoShortInlineI:
7331                         ip += 2;
7332                         break;
7333                 case MonoShortInlineBrTarget:
7334                         target = start + cli_addr + 2 + (signed char)ip [1];
7335                         GET_BBLOCK (cfg, bblock, target);
7336                         ip += 2;
7337                         if (ip < end)
7338                                 GET_BBLOCK (cfg, bblock, ip);
7339                         break;
7340                 case MonoInlineBrTarget:
7341                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7342                         GET_BBLOCK (cfg, bblock, target);
7343                         ip += 5;
7344                         if (ip < end)
7345                                 GET_BBLOCK (cfg, bblock, ip);
7346                         break;
7347                 case MonoInlineSwitch: {
7348                         guint32 n = read32 (ip + 1);
7349                         guint32 j;
7350                         ip += 5;
7351                         cli_addr += 5 + 4 * n;
7352                         target = start + cli_addr;
7353                         GET_BBLOCK (cfg, bblock, target);
7354
7355                         for (j = 0; j < n; ++j) {
7356                                 target = start + cli_addr + (gint32)read32 (ip);
7357                                 GET_BBLOCK (cfg, bblock, target);
7358                                 ip += 4;
7359                         }
7360                         break;
7361                 }
7362                 case MonoInlineR:
7363                 case MonoInlineI8:
7364                         ip += 9;
7365                         break;
7366                 default:
7367                         g_assert_not_reached ();
7368                 }
7369
7370                 if (i == CEE_THROW) {
7371                         unsigned char *bb_start = ip - 1;
7372
7373                         /* Find the start of the bblock containing the throw */
7374                         bblock = NULL;
7375                         while ((bb_start >= start) && !bblock) {
7376                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7377                                 bb_start --;
7378                         }
7379                         if (bblock)
7380                                 bblock->out_of_line = 1;
7381                 }
7382         }
7383         return 0;
7384 unverified:
7385 exception_exit:
7386         *pos = ip;
7387         return 1;
7388 }
7389
7390 static inline MonoMethod *
7391 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7392 {
7393         MonoMethod *method;
7394
7395         mono_error_init (error);
7396
7397         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7398                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7399                 if (context) {
7400                         method = mono_class_inflate_generic_method_checked (method, context, error);
7401                 }
7402         } else {
7403                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7404         }
7405
7406         return method;
7407 }
7408
7409 static inline MonoMethod *
7410 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7411 {
7412         MonoError error;
7413         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7414
7415         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7416                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7417                 method = NULL;
7418         }
7419
7420         if (!method && !cfg)
7421                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7422
7423         return method;
7424 }
7425
7426 static inline MonoClass*
7427 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7428 {
7429         MonoError error;
7430         MonoClass *klass;
7431
7432         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7433                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7434                 if (context) {
7435                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7436                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7437                 }
7438         } else {
7439                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7440                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7441         }
7442         if (klass)
7443                 mono_class_init (klass);
7444         return klass;
7445 }
7446
7447 static inline MonoMethodSignature*
7448 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
7449 {
7450         MonoMethodSignature *fsig;
7451
7452         mono_error_init (error);
7453         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7454                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7455         } else {
7456                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
7457                 return_val_if_nok (error, NULL);
7458         }
7459         if (context) {
7460                 fsig = mono_inflate_generic_signature(fsig, context, error);
7461         }
7462         return fsig;
7463 }
7464
7465 static MonoMethod*
7466 throw_exception (void)
7467 {
7468         static MonoMethod *method = NULL;
7469
7470         if (!method) {
7471                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7472                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7473         }
7474         g_assert (method);
7475         return method;
7476 }
7477
7478 static void
7479 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7480 {
7481         MonoMethod *thrower = throw_exception ();
7482         MonoInst *args [1];
7483
7484         EMIT_NEW_PCONST (cfg, args [0], ex);
7485         mono_emit_method_call (cfg, thrower, args, NULL);
7486 }
7487
7488 /*
7489  * Return the original method is a wrapper is specified. We can only access
7490  * the custom attributes from the original method.
7491  */
7492 static MonoMethod*
7493 get_original_method (MonoMethod *method)
7494 {
7495         if (method->wrapper_type == MONO_WRAPPER_NONE)
7496                 return method;
7497
7498         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7499         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7500                 return NULL;
7501
7502         /* in other cases we need to find the original method */
7503         return mono_marshal_method_from_wrapper (method);
7504 }
7505
7506 static void
7507 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7508 {
7509         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7510         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7511         if (ex)
7512                 emit_throw_exception (cfg, ex);
7513 }
7514
7515 static void
7516 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7517 {
7518         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7519         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7520         if (ex)
7521                 emit_throw_exception (cfg, ex);
7522 }
7523
7524 /*
7525  * Check that the IL instructions at ip are the array initialization
7526  * sequence and return the pointer to the data and the size.
7527  */
7528 static const char*
7529 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7530 {
7531         /*
7532          * newarr[System.Int32]
7533          * dup
7534          * ldtoken field valuetype ...
7535          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7536          */
7537         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7538                 MonoError error;
7539                 guint32 token = read32 (ip + 7);
7540                 guint32 field_token = read32 (ip + 2);
7541                 guint32 field_index = field_token & 0xffffff;
7542                 guint32 rva;
7543                 const char *data_ptr;
7544                 int size = 0;
7545                 MonoMethod *cmethod;
7546                 MonoClass *dummy_class;
7547                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7548                 int dummy_align;
7549
7550                 if (!field) {
7551                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7552                         return NULL;
7553                 }
7554
7555                 *out_field_token = field_token;
7556
7557                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7558                 if (!cmethod)
7559                         return NULL;
7560                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7561                         return NULL;
7562                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7563                 case MONO_TYPE_BOOLEAN:
7564                 case MONO_TYPE_I1:
7565                 case MONO_TYPE_U1:
7566                         size = 1; break;
7567                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7568 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7569                 case MONO_TYPE_CHAR:
7570                 case MONO_TYPE_I2:
7571                 case MONO_TYPE_U2:
7572                         size = 2; break;
7573                 case MONO_TYPE_I4:
7574                 case MONO_TYPE_U4:
7575                 case MONO_TYPE_R4:
7576                         size = 4; break;
7577                 case MONO_TYPE_R8:
7578                 case MONO_TYPE_I8:
7579                 case MONO_TYPE_U8:
7580                         size = 8; break;
7581 #endif
7582                 default:
7583                         return NULL;
7584                 }
7585                 size *= len;
7586                 if (size > mono_type_size (field->type, &dummy_align))
7587                     return NULL;
7588                 *out_size = size;
7589                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7590                 if (!image_is_dynamic (method->klass->image)) {
7591                         field_index = read32 (ip + 2) & 0xffffff;
7592                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7593                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7594                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7595                         /* for aot code we do the lookup on load */
7596                         if (aot && data_ptr)
7597                                 return (const char *)GUINT_TO_POINTER (rva);
7598                 } else {
7599                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7600                         g_assert (!aot);
7601                         data_ptr = mono_field_get_data (field);
7602                 }
7603                 return data_ptr;
7604         }
7605         return NULL;
7606 }
7607
7608 static void
7609 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7610 {
7611         MonoError error;
7612         char *method_fname = mono_method_full_name (method, TRUE);
7613         char *method_code;
7614         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7615
7616         if (!header) {
7617                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7618                 mono_error_cleanup (&error);
7619         } else if (header->code_size == 0)
7620                 method_code = g_strdup ("method body is empty.");
7621         else
7622                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7623         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7624         g_free (method_fname);
7625         g_free (method_code);
7626         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7627 }
7628
7629 static void
7630 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7631 {
7632         MonoInst *ins;
7633         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7634         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7635                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7636                 /* Optimize reg-reg moves away */
7637                 /*
7638                  * Can't optimize other opcodes, since sp[0] might point to
7639                  * the last ins of a decomposed opcode.
7640                  */
7641                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7642         } else {
7643                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7644         }
7645 }
7646
7647 /*
7648  * ldloca inhibits many optimizations so try to get rid of it in common
7649  * cases.
7650  */
7651 static inline unsigned char *
7652 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7653 {
7654         int local, token;
7655         MonoClass *klass;
7656         MonoType *type;
7657
7658         if (size == 1) {
7659                 local = ip [1];
7660                 ip += 2;
7661         } else {
7662                 local = read16 (ip + 2);
7663                 ip += 4;
7664         }
7665
7666         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7667                 /* From the INITOBJ case */
7668                 token = read32 (ip + 2);
7669                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7670                 CHECK_TYPELOAD (klass);
7671                 type = mini_get_underlying_type (&klass->byval_arg);
7672                 emit_init_local (cfg, local, type, TRUE);
7673                 return ip + 6;
7674         }
7675  exception_exit:
7676         return NULL;
7677 }
7678
7679 static MonoInst*
7680 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7681 {
7682         MonoInst *icall_args [16];
7683         MonoInst *call_target, *ins, *vtable_ins;
7684         int arg_reg, this_reg, vtable_reg;
7685         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7686         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7687         gboolean variant_iface = FALSE;
7688         guint32 slot;
7689         int offset;
7690
7691         /*
7692          * In llvm-only mode, vtables contain function descriptors instead of
7693          * method addresses/trampolines.
7694          */
7695         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7696
7697         if (is_iface)
7698                 slot = mono_method_get_imt_slot (cmethod);
7699         else
7700                 slot = mono_method_get_vtable_index (cmethod);
7701
7702         this_reg = sp [0]->dreg;
7703
7704         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7705                 variant_iface = TRUE;
7706
7707         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7708                 /*
7709                  * The simplest case, a normal virtual call.
7710                  */
7711                 int slot_reg = alloc_preg (cfg);
7712                 int addr_reg = alloc_preg (cfg);
7713                 int arg_reg = alloc_preg (cfg);
7714                 MonoBasicBlock *non_null_bb;
7715
7716                 vtable_reg = alloc_preg (cfg);
7717                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7718                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7719
7720                 /* Load the vtable slot, which contains a function descriptor. */
7721                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7722
7723                 NEW_BBLOCK (cfg, non_null_bb);
7724
7725                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7726                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7727                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7728
7729                 /* Slow path */
7730                 // FIXME: Make the wrapper use the preserveall cconv
7731                 // FIXME: Use one icall per slot for small slot numbers ?
7732                 icall_args [0] = vtable_ins;
7733                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7734                 /* Make the icall return the vtable slot value to save some code space */
7735                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7736                 ins->dreg = slot_reg;
7737                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7738
7739                 /* Fastpath */
7740                 MONO_START_BB (cfg, non_null_bb);
7741                 /* Load the address + arg from the vtable slot */
7742                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7743                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7744
7745                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7746         }
7747
7748         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7749                 /*
7750                  * A simple interface call
7751                  *
7752                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7753                  * The imt slot contains a function descriptor for a runtime function + arg.
7754                  */
7755                 int slot_reg = alloc_preg (cfg);
7756                 int addr_reg = alloc_preg (cfg);
7757                 int arg_reg = alloc_preg (cfg);
7758                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7759
7760                 vtable_reg = alloc_preg (cfg);
7761                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7762                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7763
7764                 /*
7765                  * The slot is already initialized when the vtable is created so there is no need
7766                  * to check it here.
7767                  */
7768
7769                 /* Load the imt slot, which contains a function descriptor. */
7770                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7771
7772                 /* Load the address + arg of the imt thunk from the imt slot */
7773                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7774                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7775                 /*
7776                  * IMT thunks in llvm-only mode are C functions which take an info argument
7777                  * plus the imt method and return the ftndesc to call.
7778                  */
7779                 icall_args [0] = thunk_arg_ins;
7780                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7781                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7782                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7783
7784                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7785         }
7786
7787         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7788                 /*
7789                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7790                  * dynamically extended as more instantiations are discovered.
7791                  * This handles generic virtual methods both on classes and interfaces.
7792                  */
7793                 int slot_reg = alloc_preg (cfg);
7794                 int addr_reg = alloc_preg (cfg);
7795                 int arg_reg = alloc_preg (cfg);
7796                 int ftndesc_reg = alloc_preg (cfg);
7797                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7798                 MonoBasicBlock *slowpath_bb, *end_bb;
7799
7800                 NEW_BBLOCK (cfg, slowpath_bb);
7801                 NEW_BBLOCK (cfg, end_bb);
7802
7803                 vtable_reg = alloc_preg (cfg);
7804                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7805                 if (is_iface)
7806                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7807                 else
7808                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7809
7810                 /* Load the slot, which contains a function descriptor. */
7811                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7812
7813                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7814                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7815                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7816                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7817
7818                 /* Fastpath */
7819                 /* Same as with iface calls */
7820                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7821                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7822                 icall_args [0] = thunk_arg_ins;
7823                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7824                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7825                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7826                 ftndesc_ins->dreg = ftndesc_reg;
7827                 /*
7828                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7829                  * they don't know about yet. Fall back to the slowpath in that case.
7830                  */
7831                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7832                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7833
7834                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7835
7836                 /* Slowpath */
7837                 MONO_START_BB (cfg, slowpath_bb);
7838                 icall_args [0] = vtable_ins;
7839                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7840                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7841                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7842                 if (is_iface)
7843                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7844                 else
7845                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7846                 ftndesc_ins->dreg = ftndesc_reg;
7847                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7848
7849                 /* Common case */
7850                 MONO_START_BB (cfg, end_bb);
7851                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7852         }
7853
7854         /*
7855          * Non-optimized cases
7856          */
7857         icall_args [0] = sp [0];
7858         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7859
7860         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7861                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7862
7863         arg_reg = alloc_preg (cfg);
7864         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7865         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7866
7867         g_assert (is_gsharedvt);
7868         if (is_iface)
7869                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7870         else
7871                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7872
7873         /*
7874          * Pass the extra argument even if the callee doesn't receive it, most
7875          * calling conventions allow this.
7876          */
7877         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7878 }
7879
7880 static gboolean
7881 is_exception_class (MonoClass *klass)
7882 {
7883         while (klass) {
7884                 if (klass == mono_defaults.exception_class)
7885                         return TRUE;
7886                 klass = klass->parent;
7887         }
7888         return FALSE;
7889 }
7890
7891 /*
7892  * is_jit_optimizer_disabled:
7893  *
7894  *   Determine whenever M's assembly has a DebuggableAttribute with the
7895  * IsJITOptimizerDisabled flag set.
7896  */
7897 static gboolean
7898 is_jit_optimizer_disabled (MonoMethod *m)
7899 {
7900         MonoError error;
7901         MonoAssembly *ass = m->klass->image->assembly;
7902         MonoCustomAttrInfo* attrs;
7903         MonoClass *klass;
7904         int i;
7905         gboolean val = FALSE;
7906
7907         g_assert (ass);
7908         if (ass->jit_optimizer_disabled_inited)
7909                 return ass->jit_optimizer_disabled;
7910
7911         klass = mono_class_try_get_debuggable_attribute_class ();
7912
7913         if (!klass) {
7914                 /* Linked away */
7915                 ass->jit_optimizer_disabled = FALSE;
7916                 mono_memory_barrier ();
7917                 ass->jit_optimizer_disabled_inited = TRUE;
7918                 return FALSE;
7919         }
7920
7921         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7922         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7923         if (attrs) {
7924                 for (i = 0; i < attrs->num_attrs; ++i) {
7925                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7926                         const gchar *p;
7927                         MonoMethodSignature *sig;
7928
7929                         if (!attr->ctor || attr->ctor->klass != klass)
7930                                 continue;
7931                         /* Decode the attribute. See reflection.c */
7932                         p = (const char*)attr->data;
7933                         g_assert (read16 (p) == 0x0001);
7934                         p += 2;
7935
7936                         // FIXME: Support named parameters
7937                         sig = mono_method_signature (attr->ctor);
7938                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7939                                 continue;
7940                         /* Two boolean arguments */
7941                         p ++;
7942                         val = *p;
7943                 }
7944                 mono_custom_attrs_free (attrs);
7945         }
7946
7947         ass->jit_optimizer_disabled = val;
7948         mono_memory_barrier ();
7949         ass->jit_optimizer_disabled_inited = TRUE;
7950
7951         return val;
7952 }
7953
7954 static gboolean
7955 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7956 {
7957         gboolean supported_tail_call;
7958         int i;
7959
7960         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7961
7962         for (i = 0; i < fsig->param_count; ++i) {
7963                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7964                         /* These can point to the current method's stack */
7965                         supported_tail_call = FALSE;
7966         }
7967         if (fsig->hasthis && cmethod->klass->valuetype)
7968                 /* this might point to the current method's stack */
7969                 supported_tail_call = FALSE;
7970         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7971                 supported_tail_call = FALSE;
7972         if (cfg->method->save_lmf)
7973                 supported_tail_call = FALSE;
7974         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7975                 supported_tail_call = FALSE;
7976         if (call_opcode != CEE_CALL)
7977                 supported_tail_call = FALSE;
7978
7979         /* Debugging support */
7980 #if 0
7981         if (supported_tail_call) {
7982                 if (!mono_debug_count ())
7983                         supported_tail_call = FALSE;
7984         }
7985 #endif
7986
7987         return supported_tail_call;
7988 }
7989
7990 /*
7991  * handle_ctor_call:
7992  *
7993  *   Handle calls made to ctors from NEWOBJ opcodes.
7994  */
7995 static void
7996 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7997                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7998 {
7999         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8000
8001         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8002                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8003                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8004                         mono_class_vtable (cfg->domain, cmethod->klass);
8005                         CHECK_TYPELOAD (cmethod->klass);
8006
8007                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8008                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8009                 } else {
8010                         if (context_used) {
8011                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8012                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8013                         } else {
8014                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8015
8016                                 CHECK_TYPELOAD (cmethod->klass);
8017                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8018                         }
8019                 }
8020         }
8021
8022         /* Avoid virtual calls to ctors if possible */
8023         if (mono_class_is_marshalbyref (cmethod->klass))
8024                 callvirt_this_arg = sp [0];
8025
8026         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8027                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8028                 CHECK_CFG_EXCEPTION;
8029         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8030                            mono_method_check_inlining (cfg, cmethod) &&
8031                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8032                 int costs;
8033
8034                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8035                         cfg->real_offset += 5;
8036
8037                         *inline_costs += costs - 5;
8038                 } else {
8039                         INLINE_FAILURE ("inline failure");
8040                         // FIXME-VT: Clean this up
8041                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8042                                 GSHAREDVT_FAILURE(*ip);
8043                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8044                 }
8045         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8046                 MonoInst *addr;
8047
8048                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8049
8050                 if (cfg->llvm_only) {
8051                         // FIXME: Avoid initializing vtable_arg
8052                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8053                 } else {
8054                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8055                 }
8056         } else if (context_used &&
8057                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8058                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8059                 MonoInst *cmethod_addr;
8060
8061                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8062
8063                 if (cfg->llvm_only) {
8064                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8065                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8066                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8067                 } else {
8068                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8069                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8070
8071                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8072                 }
8073         } else {
8074                 INLINE_FAILURE ("ctor call");
8075                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8076                                                                                   callvirt_this_arg, NULL, vtable_arg);
8077         }
8078  exception_exit:
8079         return;
8080 }
8081
8082 static void
8083 emit_setret (MonoCompile *cfg, MonoInst *val)
8084 {
8085         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8086         MonoInst *ins;
8087
8088         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8089                 MonoInst *ret_addr;
8090
8091                 if (!cfg->vret_addr) {
8092                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8093                 } else {
8094                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8095
8096                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8097                         ins->klass = mono_class_from_mono_type (ret_type);
8098                 }
8099         } else {
8100 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8101                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8102                         MonoInst *iargs [1];
8103                         MonoInst *conv;
8104
8105                         iargs [0] = val;
8106                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8107                         mono_arch_emit_setret (cfg, cfg->method, conv);
8108                 } else {
8109                         mono_arch_emit_setret (cfg, cfg->method, val);
8110                 }
8111 #else
8112                 mono_arch_emit_setret (cfg, cfg->method, val);
8113 #endif
8114         }
8115 }
8116
8117 /*
8118  * mono_method_to_ir:
8119  *
8120  *   Translate the .net IL into linear IR.
8121  */
8122 int
8123 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8124                    MonoInst *return_var, MonoInst **inline_args,
8125                    guint inline_offset, gboolean is_virtual_call)
8126 {
8127         MonoError error;
8128         MonoInst *ins, **sp, **stack_start;
8129         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8130         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8131         MonoMethod *cmethod, *method_definition;
8132         MonoInst **arg_array;
8133         MonoMethodHeader *header;
8134         MonoImage *image;
8135         guint32 token, ins_flag;
8136         MonoClass *klass;
8137         MonoClass *constrained_class = NULL;
8138         unsigned char *ip, *end, *target, *err_pos;
8139         MonoMethodSignature *sig;
8140         MonoGenericContext *generic_context = NULL;
8141         MonoGenericContainer *generic_container = NULL;
8142         MonoType **param_types;
8143         int i, n, start_new_bblock, dreg;
8144         int num_calls = 0, inline_costs = 0;
8145         int breakpoint_id = 0;
8146         guint num_args;
8147         GSList *class_inits = NULL;
8148         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8149         int context_used;
8150         gboolean init_locals, seq_points, skip_dead_blocks;
8151         gboolean sym_seq_points = FALSE;
8152         MonoDebugMethodInfo *minfo;
8153         MonoBitSet *seq_point_locs = NULL;
8154         MonoBitSet *seq_point_set_locs = NULL;
8155
8156         cfg->disable_inline = is_jit_optimizer_disabled (method);
8157
8158         /* serialization and xdomain stuff may need access to private fields and methods */
8159         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8160         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8161         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8162         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8163         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8164         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8165
8166         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8167         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8168         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8169         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8170         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8171
8172         image = method->klass->image;
8173         header = mono_method_get_header_checked (method, &cfg->error);
8174         if (!header) {
8175                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8176                 goto exception_exit;
8177         }
8178         generic_container = mono_method_get_generic_container (method);
8179         sig = mono_method_signature (method);
8180         num_args = sig->hasthis + sig->param_count;
8181         ip = (unsigned char*)header->code;
8182         cfg->cil_start = ip;
8183         end = ip + header->code_size;
8184         cfg->stat_cil_code_size += header->code_size;
8185
8186         seq_points = cfg->gen_seq_points && cfg->method == method;
8187
8188         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8189                 /* We could hit a seq point before attaching to the JIT (#8338) */
8190                 seq_points = FALSE;
8191         }
8192
8193         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8194                 minfo = mono_debug_lookup_method (method);
8195                 if (minfo) {
8196                         MonoSymSeqPoint *sps;
8197                         int i, n_il_offsets;
8198
8199                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8200                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8201                         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);
8202                         sym_seq_points = TRUE;
8203                         for (i = 0; i < n_il_offsets; ++i) {
8204                                 if (sps [i].il_offset < header->code_size)
8205                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8206                         }
8207                         g_free (sps);
8208                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8209                         /* Methods without line number info like auto-generated property accessors */
8210                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8211                         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);
8212                         sym_seq_points = TRUE;
8213                 }
8214         }
8215
8216         /*
8217          * Methods without init_locals set could cause asserts in various passes
8218          * (#497220). To work around this, we emit dummy initialization opcodes
8219          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8220          * on some platforms.
8221          */
8222         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8223                 init_locals = header->init_locals;
8224         else
8225                 init_locals = TRUE;
8226
8227         method_definition = method;
8228         while (method_definition->is_inflated) {
8229                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8230                 method_definition = imethod->declaring;
8231         }
8232
8233         /* SkipVerification is not allowed if core-clr is enabled */
8234         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8235                 dont_verify = TRUE;
8236                 dont_verify_stloc = TRUE;
8237         }
8238
8239         if (sig->is_inflated)
8240                 generic_context = mono_method_get_context (method);
8241         else if (generic_container)
8242                 generic_context = &generic_container->context;
8243         cfg->generic_context = generic_context;
8244
8245         if (!cfg->gshared)
8246                 g_assert (!sig->has_type_parameters);
8247
8248         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8249                 g_assert (method->is_inflated);
8250                 g_assert (mono_method_get_context (method)->method_inst);
8251         }
8252         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8253                 g_assert (sig->generic_param_count);
8254
8255         if (cfg->method == method) {
8256                 cfg->real_offset = 0;
8257         } else {
8258                 cfg->real_offset = inline_offset;
8259         }
8260
8261         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8262         cfg->cil_offset_to_bb_len = header->code_size;
8263
8264         cfg->current_method = method;
8265
8266         if (cfg->verbose_level > 2)
8267                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8268
8269         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8270         if (sig->hasthis)
8271                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8272         for (n = 0; n < sig->param_count; ++n)
8273                 param_types [n + sig->hasthis] = sig->params [n];
8274         cfg->arg_types = param_types;
8275
8276         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8277         if (cfg->method == method) {
8278
8279                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8280                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8281
8282                 /* ENTRY BLOCK */
8283                 NEW_BBLOCK (cfg, start_bblock);
8284                 cfg->bb_entry = start_bblock;
8285                 start_bblock->cil_code = NULL;
8286                 start_bblock->cil_length = 0;
8287
8288                 /* EXIT BLOCK */
8289                 NEW_BBLOCK (cfg, end_bblock);
8290                 cfg->bb_exit = end_bblock;
8291                 end_bblock->cil_code = NULL;
8292                 end_bblock->cil_length = 0;
8293                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8294                 g_assert (cfg->num_bblocks == 2);
8295
8296                 arg_array = cfg->args;
8297
8298                 if (header->num_clauses) {
8299                         cfg->spvars = g_hash_table_new (NULL, NULL);
8300                         cfg->exvars = g_hash_table_new (NULL, NULL);
8301                 }
8302                 /* handle exception clauses */
8303                 for (i = 0; i < header->num_clauses; ++i) {
8304                         MonoBasicBlock *try_bb;
8305                         MonoExceptionClause *clause = &header->clauses [i];
8306                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8307
8308                         try_bb->real_offset = clause->try_offset;
8309                         try_bb->try_start = TRUE;
8310                         try_bb->region = ((i + 1) << 8) | clause->flags;
8311                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8312                         tblock->real_offset = clause->handler_offset;
8313                         tblock->flags |= BB_EXCEPTION_HANDLER;
8314
8315                         /*
8316                          * Linking the try block with the EH block hinders inlining as we won't be able to
8317                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8318                          */
8319                         if (COMPILE_LLVM (cfg))
8320                                 link_bblock (cfg, try_bb, tblock);
8321
8322                         if (*(ip + clause->handler_offset) == CEE_POP)
8323                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8324
8325                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8326                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8327                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8328                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8329                                 MONO_ADD_INS (tblock, ins);
8330
8331                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8332                                         /* finally clauses already have a seq point */
8333                                         /* seq points for filter clauses are emitted below */
8334                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8335                                         MONO_ADD_INS (tblock, ins);
8336                                 }
8337
8338                                 /* todo: is a fault block unsafe to optimize? */
8339                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8340                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8341                         }
8342
8343                         /*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);
8344                           while (p < end) {
8345                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8346                           }*/
8347                         /* catch and filter blocks get the exception object on the stack */
8348                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8349                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8350
8351                                 /* mostly like handle_stack_args (), but just sets the input args */
8352                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8353                                 tblock->in_scount = 1;
8354                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8355                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8356
8357                                 cfg->cbb = tblock;
8358
8359 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8360                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8361                                 if (!cfg->compile_llvm) {
8362                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8363                                         ins->dreg = tblock->in_stack [0]->dreg;
8364                                         MONO_ADD_INS (tblock, ins);
8365                                 }
8366 #else
8367                                 MonoInst *dummy_use;
8368
8369                                 /*
8370                                  * Add a dummy use for the exvar so its liveness info will be
8371                                  * correct.
8372                                  */
8373                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8374 #endif
8375
8376                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8377                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8378                                         MONO_ADD_INS (tblock, ins);
8379                                 }
8380
8381                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8382                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8383                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8384                                         tblock->real_offset = clause->data.filter_offset;
8385                                         tblock->in_scount = 1;
8386                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8387                                         /* The filter block shares the exvar with the handler block */
8388                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8389                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8390                                         MONO_ADD_INS (tblock, ins);
8391                                 }
8392                         }
8393
8394                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8395                                         clause->data.catch_class &&
8396                                         cfg->gshared &&
8397                                         mono_class_check_context_used (clause->data.catch_class)) {
8398                                 /*
8399                                  * In shared generic code with catch
8400                                  * clauses containing type variables
8401                                  * the exception handling code has to
8402                                  * be able to get to the rgctx.
8403                                  * Therefore we have to make sure that
8404                                  * the vtable/mrgctx argument (for
8405                                  * static or generic methods) or the
8406                                  * "this" argument (for non-static
8407                                  * methods) are live.
8408                                  */
8409                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8410                                                 mini_method_get_context (method)->method_inst ||
8411                                                 method->klass->valuetype) {
8412                                         mono_get_vtable_var (cfg);
8413                                 } else {
8414                                         MonoInst *dummy_use;
8415
8416                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8417                                 }
8418                         }
8419                 }
8420         } else {
8421                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8422                 cfg->cbb = start_bblock;
8423                 cfg->args = arg_array;
8424                 mono_save_args (cfg, sig, inline_args);
8425         }
8426
8427         /* FIRST CODE BLOCK */
8428         NEW_BBLOCK (cfg, tblock);
8429         tblock->cil_code = ip;
8430         cfg->cbb = tblock;
8431         cfg->ip = ip;
8432
8433         ADD_BBLOCK (cfg, tblock);
8434
8435         if (cfg->method == method) {
8436                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8437                 if (breakpoint_id) {
8438                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8439                         MONO_ADD_INS (cfg->cbb, ins);
8440                 }
8441         }
8442
8443         /* we use a separate basic block for the initialization code */
8444         NEW_BBLOCK (cfg, init_localsbb);
8445         cfg->bb_init = init_localsbb;
8446         init_localsbb->real_offset = cfg->real_offset;
8447         start_bblock->next_bb = init_localsbb;
8448         init_localsbb->next_bb = cfg->cbb;
8449         link_bblock (cfg, start_bblock, init_localsbb);
8450         link_bblock (cfg, init_localsbb, cfg->cbb);
8451
8452         cfg->cbb = init_localsbb;
8453
8454         if (cfg->gsharedvt && cfg->method == method) {
8455                 MonoGSharedVtMethodInfo *info;
8456                 MonoInst *var, *locals_var;
8457                 int dreg;
8458
8459                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8460                 info->method = cfg->method;
8461                 info->count_entries = 16;
8462                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8463                 cfg->gsharedvt_info = info;
8464
8465                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8466                 /* prevent it from being register allocated */
8467                 //var->flags |= MONO_INST_VOLATILE;
8468                 cfg->gsharedvt_info_var = var;
8469
8470                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8471                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8472
8473                 /* Allocate locals */
8474                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8475                 /* prevent it from being register allocated */
8476                 //locals_var->flags |= MONO_INST_VOLATILE;
8477                 cfg->gsharedvt_locals_var = locals_var;
8478
8479                 dreg = alloc_ireg (cfg);
8480                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8481
8482                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8483                 ins->dreg = locals_var->dreg;
8484                 ins->sreg1 = dreg;
8485                 MONO_ADD_INS (cfg->cbb, ins);
8486                 cfg->gsharedvt_locals_var_ins = ins;
8487
8488                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8489                 /*
8490                 if (init_locals)
8491                         ins->flags |= MONO_INST_INIT;
8492                 */
8493         }
8494
8495         if (mono_security_core_clr_enabled ()) {
8496                 /* check if this is native code, e.g. an icall or a p/invoke */
8497                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8498                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8499                         if (wrapped) {
8500                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8501                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8502
8503                                 /* if this ia a native call then it can only be JITted from platform code */
8504                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8505                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8506                                                 MonoException *ex = icall ? mono_get_exception_security () :
8507                                                         mono_get_exception_method_access ();
8508                                                 emit_throw_exception (cfg, ex);
8509                                         }
8510                                 }
8511                         }
8512                 }
8513         }
8514
8515         CHECK_CFG_EXCEPTION;
8516
8517         if (header->code_size == 0)
8518                 UNVERIFIED;
8519
8520         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8521                 ip = err_pos;
8522                 UNVERIFIED;
8523         }
8524
8525         if (cfg->method == method)
8526                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8527
8528         for (n = 0; n < header->num_locals; ++n) {
8529                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8530                         UNVERIFIED;
8531         }
8532         class_inits = NULL;
8533
8534         /* We force the vtable variable here for all shared methods
8535            for the possibility that they might show up in a stack
8536            trace where their exact instantiation is needed. */
8537         if (cfg->gshared && method == cfg->method) {
8538                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8539                                 mini_method_get_context (method)->method_inst ||
8540                                 method->klass->valuetype) {
8541                         mono_get_vtable_var (cfg);
8542                 } else {
8543                         /* FIXME: Is there a better way to do this?
8544                            We need the variable live for the duration
8545                            of the whole method. */
8546                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8547                 }
8548         }
8549
8550         /* add a check for this != NULL to inlined methods */
8551         if (is_virtual_call) {
8552                 MonoInst *arg_ins;
8553
8554                 NEW_ARGLOAD (cfg, arg_ins, 0);
8555                 MONO_ADD_INS (cfg->cbb, arg_ins);
8556                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8557         }
8558
8559         skip_dead_blocks = !dont_verify;
8560         if (skip_dead_blocks) {
8561                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8562                 CHECK_CFG_ERROR;
8563                 g_assert (bb);
8564         }
8565
8566         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8567         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8568
8569         ins_flag = 0;
8570         start_new_bblock = 0;
8571         while (ip < end) {
8572                 if (cfg->method == method)
8573                         cfg->real_offset = ip - header->code;
8574                 else
8575                         cfg->real_offset = inline_offset;
8576                 cfg->ip = ip;
8577
8578                 context_used = 0;
8579
8580                 if (start_new_bblock) {
8581                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8582                         if (start_new_bblock == 2) {
8583                                 g_assert (ip == tblock->cil_code);
8584                         } else {
8585                                 GET_BBLOCK (cfg, tblock, ip);
8586                         }
8587                         cfg->cbb->next_bb = tblock;
8588                         cfg->cbb = tblock;
8589                         start_new_bblock = 0;
8590                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8591                                 if (cfg->verbose_level > 3)
8592                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8593                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8594                                 *sp++ = ins;
8595                         }
8596                         if (class_inits)
8597                                 g_slist_free (class_inits);
8598                         class_inits = NULL;
8599                 } else {
8600                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8601                                 link_bblock (cfg, cfg->cbb, tblock);
8602                                 if (sp != stack_start) {
8603                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8604                                         sp = stack_start;
8605                                         CHECK_UNVERIFIABLE (cfg);
8606                                 }
8607                                 cfg->cbb->next_bb = tblock;
8608                                 cfg->cbb = tblock;
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                                 g_slist_free (class_inits);
8616                                 class_inits = NULL;
8617                         }
8618                 }
8619
8620                 if (skip_dead_blocks) {
8621                         int ip_offset = ip - header->code;
8622
8623                         if (ip_offset == bb->end)
8624                                 bb = bb->next;
8625
8626                         if (bb->dead) {
8627                                 int op_size = mono_opcode_size (ip, end);
8628                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8629
8630                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8631
8632                                 if (ip_offset + op_size == bb->end) {
8633                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8634                                         MONO_ADD_INS (cfg->cbb, ins);
8635                                         start_new_bblock = 1;
8636                                 }
8637
8638                                 ip += op_size;
8639                                 continue;
8640                         }
8641                 }
8642                 /*
8643                  * Sequence points are points where the debugger can place a breakpoint.
8644                  * Currently, we generate these automatically at points where the IL
8645                  * stack is empty.
8646                  */
8647                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8648                         /*
8649                          * Make methods interruptable at the beginning, and at the targets of
8650                          * backward branches.
8651                          * Also, do this at the start of every bblock in methods with clauses too,
8652                          * to be able to handle instructions with inprecise control flow like
8653                          * throw/endfinally.
8654                          * Backward branches are handled at the end of method-to-ir ().
8655                          */
8656                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8657                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8658
8659                         /* Avoid sequence points on empty IL like .volatile */
8660                         // FIXME: Enable this
8661                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8662                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8663                         if ((sp != stack_start) && !sym_seq_point)
8664                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8665                         MONO_ADD_INS (cfg->cbb, ins);
8666
8667                         if (sym_seq_points)
8668                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8669                 }
8670
8671                 cfg->cbb->real_offset = cfg->real_offset;
8672
8673                 if ((cfg->method == method) && cfg->coverage_info) {
8674                         guint32 cil_offset = ip - header->code;
8675                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8676
8677                         /* TODO: Use an increment here */
8678 #if defined(TARGET_X86)
8679                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8680                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8681                         ins->inst_imm = 1;
8682                         MONO_ADD_INS (cfg->cbb, ins);
8683 #else
8684                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8685                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8686 #endif
8687                 }
8688
8689                 if (cfg->verbose_level > 3)
8690                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8691
8692                 switch (*ip) {
8693                 case CEE_NOP:
8694                         if (seq_points && !sym_seq_points && sp != stack_start) {
8695                                 /*
8696                                  * The C# compiler uses these nops to notify the JIT that it should
8697                                  * insert seq points.
8698                                  */
8699                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8700                                 MONO_ADD_INS (cfg->cbb, ins);
8701                         }
8702                         if (cfg->keep_cil_nops)
8703                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8704                         else
8705                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8706                         ip++;
8707                         MONO_ADD_INS (cfg->cbb, ins);
8708                         break;
8709                 case CEE_BREAK:
8710                         if (should_insert_brekpoint (cfg->method)) {
8711                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8712                         } else {
8713                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8714                         }
8715                         ip++;
8716                         MONO_ADD_INS (cfg->cbb, ins);
8717                         break;
8718                 case CEE_LDARG_0:
8719                 case CEE_LDARG_1:
8720                 case CEE_LDARG_2:
8721                 case CEE_LDARG_3:
8722                         CHECK_STACK_OVF (1);
8723                         n = (*ip)-CEE_LDARG_0;
8724                         CHECK_ARG (n);
8725                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8726                         ip++;
8727                         *sp++ = ins;
8728                         break;
8729                 case CEE_LDLOC_0:
8730                 case CEE_LDLOC_1:
8731                 case CEE_LDLOC_2:
8732                 case CEE_LDLOC_3:
8733                         CHECK_STACK_OVF (1);
8734                         n = (*ip)-CEE_LDLOC_0;
8735                         CHECK_LOCAL (n);
8736                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8737                         ip++;
8738                         *sp++ = ins;
8739                         break;
8740                 case CEE_STLOC_0:
8741                 case CEE_STLOC_1:
8742                 case CEE_STLOC_2:
8743                 case CEE_STLOC_3: {
8744                         CHECK_STACK (1);
8745                         n = (*ip)-CEE_STLOC_0;
8746                         CHECK_LOCAL (n);
8747                         --sp;
8748                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8749                                 UNVERIFIED;
8750                         emit_stloc_ir (cfg, sp, header, n);
8751                         ++ip;
8752                         inline_costs += 1;
8753                         break;
8754                         }
8755                 case CEE_LDARG_S:
8756                         CHECK_OPSIZE (2);
8757                         CHECK_STACK_OVF (1);
8758                         n = ip [1];
8759                         CHECK_ARG (n);
8760                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8761                         *sp++ = ins;
8762                         ip += 2;
8763                         break;
8764                 case CEE_LDARGA_S:
8765                         CHECK_OPSIZE (2);
8766                         CHECK_STACK_OVF (1);
8767                         n = ip [1];
8768                         CHECK_ARG (n);
8769                         NEW_ARGLOADA (cfg, ins, n);
8770                         MONO_ADD_INS (cfg->cbb, ins);
8771                         *sp++ = ins;
8772                         ip += 2;
8773                         break;
8774                 case CEE_STARG_S:
8775                         CHECK_OPSIZE (2);
8776                         CHECK_STACK (1);
8777                         --sp;
8778                         n = ip [1];
8779                         CHECK_ARG (n);
8780                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8781                                 UNVERIFIED;
8782                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8783                         ip += 2;
8784                         break;
8785                 case CEE_LDLOC_S:
8786                         CHECK_OPSIZE (2);
8787                         CHECK_STACK_OVF (1);
8788                         n = ip [1];
8789                         CHECK_LOCAL (n);
8790                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8791                         *sp++ = ins;
8792                         ip += 2;
8793                         break;
8794                 case CEE_LDLOCA_S: {
8795                         unsigned char *tmp_ip;
8796                         CHECK_OPSIZE (2);
8797                         CHECK_STACK_OVF (1);
8798                         CHECK_LOCAL (ip [1]);
8799
8800                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8801                                 ip = tmp_ip;
8802                                 inline_costs += 1;
8803                                 break;
8804                         }
8805
8806                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8807                         *sp++ = ins;
8808                         ip += 2;
8809                         break;
8810                 }
8811                 case CEE_STLOC_S:
8812                         CHECK_OPSIZE (2);
8813                         CHECK_STACK (1);
8814                         --sp;
8815                         CHECK_LOCAL (ip [1]);
8816                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8817                                 UNVERIFIED;
8818                         emit_stloc_ir (cfg, sp, header, ip [1]);
8819                         ip += 2;
8820                         inline_costs += 1;
8821                         break;
8822                 case CEE_LDNULL:
8823                         CHECK_STACK_OVF (1);
8824                         EMIT_NEW_PCONST (cfg, ins, NULL);
8825                         ins->type = STACK_OBJ;
8826                         ++ip;
8827                         *sp++ = ins;
8828                         break;
8829                 case CEE_LDC_I4_M1:
8830                         CHECK_STACK_OVF (1);
8831                         EMIT_NEW_ICONST (cfg, ins, -1);
8832                         ++ip;
8833                         *sp++ = ins;
8834                         break;
8835                 case CEE_LDC_I4_0:
8836                 case CEE_LDC_I4_1:
8837                 case CEE_LDC_I4_2:
8838                 case CEE_LDC_I4_3:
8839                 case CEE_LDC_I4_4:
8840                 case CEE_LDC_I4_5:
8841                 case CEE_LDC_I4_6:
8842                 case CEE_LDC_I4_7:
8843                 case CEE_LDC_I4_8:
8844                         CHECK_STACK_OVF (1);
8845                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8846                         ++ip;
8847                         *sp++ = ins;
8848                         break;
8849                 case CEE_LDC_I4_S:
8850                         CHECK_OPSIZE (2);
8851                         CHECK_STACK_OVF (1);
8852                         ++ip;
8853                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8854                         ++ip;
8855                         *sp++ = ins;
8856                         break;
8857                 case CEE_LDC_I4:
8858                         CHECK_OPSIZE (5);
8859                         CHECK_STACK_OVF (1);
8860                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8861                         ip += 5;
8862                         *sp++ = ins;
8863                         break;
8864                 case CEE_LDC_I8:
8865                         CHECK_OPSIZE (9);
8866                         CHECK_STACK_OVF (1);
8867                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8868                         ins->type = STACK_I8;
8869                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8870                         ++ip;
8871                         ins->inst_l = (gint64)read64 (ip);
8872                         MONO_ADD_INS (cfg->cbb, ins);
8873                         ip += 8;
8874                         *sp++ = ins;
8875                         break;
8876                 case CEE_LDC_R4: {
8877                         float *f;
8878                         gboolean use_aotconst = FALSE;
8879
8880 #ifdef TARGET_POWERPC
8881                         /* FIXME: Clean this up */
8882                         if (cfg->compile_aot)
8883                                 use_aotconst = TRUE;
8884 #endif
8885
8886                         /* FIXME: we should really allocate this only late in the compilation process */
8887                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8888                         CHECK_OPSIZE (5);
8889                         CHECK_STACK_OVF (1);
8890
8891                         if (use_aotconst) {
8892                                 MonoInst *cons;
8893                                 int dreg;
8894
8895                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8896
8897                                 dreg = alloc_freg (cfg);
8898                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8899                                 ins->type = cfg->r4_stack_type;
8900                         } else {
8901                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8902                                 ins->type = cfg->r4_stack_type;
8903                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8904                                 ins->inst_p0 = f;
8905                                 MONO_ADD_INS (cfg->cbb, ins);
8906                         }
8907                         ++ip;
8908                         readr4 (ip, f);
8909                         ip += 4;
8910                         *sp++ = ins;
8911                         break;
8912                 }
8913                 case CEE_LDC_R8: {
8914                         double *d;
8915                         gboolean use_aotconst = FALSE;
8916
8917 #ifdef TARGET_POWERPC
8918                         /* FIXME: Clean this up */
8919                         if (cfg->compile_aot)
8920                                 use_aotconst = TRUE;
8921 #endif
8922
8923                         /* FIXME: we should really allocate this only late in the compilation process */
8924                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8925                         CHECK_OPSIZE (9);
8926                         CHECK_STACK_OVF (1);
8927
8928                         if (use_aotconst) {
8929                                 MonoInst *cons;
8930                                 int dreg;
8931
8932                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8933
8934                                 dreg = alloc_freg (cfg);
8935                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8936                                 ins->type = STACK_R8;
8937                         } else {
8938                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8939                                 ins->type = STACK_R8;
8940                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8941                                 ins->inst_p0 = d;
8942                                 MONO_ADD_INS (cfg->cbb, ins);
8943                         }
8944                         ++ip;
8945                         readr8 (ip, d);
8946                         ip += 8;
8947                         *sp++ = ins;
8948                         break;
8949                 }
8950                 case CEE_DUP: {
8951                         MonoInst *temp, *store;
8952                         CHECK_STACK (1);
8953                         CHECK_STACK_OVF (1);
8954                         sp--;
8955                         ins = *sp;
8956
8957                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8958                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8959
8960                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8961                         *sp++ = ins;
8962
8963                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8964                         *sp++ = ins;
8965
8966                         ++ip;
8967                         inline_costs += 2;
8968                         break;
8969                 }
8970                 case CEE_POP:
8971                         CHECK_STACK (1);
8972                         ip++;
8973                         --sp;
8974
8975 #ifdef TARGET_X86
8976                         if (sp [0]->type == STACK_R8)
8977                                 /* we need to pop the value from the x86 FP stack */
8978                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8979 #endif
8980                         break;
8981                 case CEE_JMP: {
8982                         MonoCallInst *call;
8983                         MonoMethodSignature *fsig;
8984                         int i, n;
8985
8986                         INLINE_FAILURE ("jmp");
8987                         GSHAREDVT_FAILURE (*ip);
8988
8989                         CHECK_OPSIZE (5);
8990                         if (stack_start != sp)
8991                                 UNVERIFIED;
8992                         token = read32 (ip + 1);
8993                         /* FIXME: check the signature matches */
8994                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8995                         CHECK_CFG_ERROR;
8996
8997                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8998                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8999
9000                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9001
9002                         fsig = mono_method_signature (cmethod);
9003                         n = fsig->param_count + fsig->hasthis;
9004                         if (cfg->llvm_only) {
9005                                 MonoInst **args;
9006
9007                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9008                                 for (i = 0; i < n; ++i)
9009                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9010                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9011                                 /*
9012                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9013                                  * have to emit a normal return since llvm expects it.
9014                                  */
9015                                 if (cfg->ret)
9016                                         emit_setret (cfg, ins);
9017                                 MONO_INST_NEW (cfg, ins, OP_BR);
9018                                 ins->inst_target_bb = end_bblock;
9019                                 MONO_ADD_INS (cfg->cbb, ins);
9020                                 link_bblock (cfg, cfg->cbb, end_bblock);
9021                                 ip += 5;
9022                                 break;
9023                         } else if (cfg->backend->have_op_tail_call) {
9024                                 /* Handle tail calls similarly to calls */
9025                                 DISABLE_AOT (cfg);
9026
9027                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9028                                 call->method = cmethod;
9029                                 call->tail_call = TRUE;
9030                                 call->signature = mono_method_signature (cmethod);
9031                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9032                                 call->inst.inst_p0 = cmethod;
9033                                 for (i = 0; i < n; ++i)
9034                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9035
9036                                 mono_arch_emit_call (cfg, call);
9037                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9038                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9039                         } else {
9040                                 for (i = 0; i < num_args; ++i)
9041                                         /* Prevent arguments from being optimized away */
9042                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9043
9044                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9045                                 ins = (MonoInst*)call;
9046                                 ins->inst_p0 = cmethod;
9047                                 MONO_ADD_INS (cfg->cbb, ins);
9048                         }
9049
9050                         ip += 5;
9051                         start_new_bblock = 1;
9052                         break;
9053                 }
9054                 case CEE_CALLI: {
9055                         MonoInst *addr;
9056                         MonoMethodSignature *fsig;
9057
9058                         CHECK_OPSIZE (5);
9059                         token = read32 (ip + 1);
9060
9061                         ins = NULL;
9062
9063                         //GSHAREDVT_FAILURE (*ip);
9064                         cmethod = NULL;
9065                         CHECK_STACK (1);
9066                         --sp;
9067                         addr = *sp;
9068                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
9069                         CHECK_CFG_ERROR;
9070
9071                         if (method->dynamic && fsig->pinvoke) {
9072                                 MonoInst *args [3];
9073
9074                                 /*
9075                                  * This is a call through a function pointer using a pinvoke
9076                                  * signature. Have to create a wrapper and call that instead.
9077                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9078                                  * instead based on the signature.
9079                                  */
9080                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9081                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9082                                 args [2] = addr;
9083                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9084                         }
9085
9086                         n = fsig->param_count + fsig->hasthis;
9087
9088                         CHECK_STACK (n);
9089
9090                         //g_assert (!virtual_ || fsig->hasthis);
9091
9092                         sp -= n;
9093
9094                         inline_costs += 10 * num_calls++;
9095
9096                         /*
9097                          * Making generic calls out of gsharedvt methods.
9098                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9099                          * patching gshared method addresses into a gsharedvt method.
9100                          */
9101                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9102                                 /*
9103                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9104                                  */
9105                                 MonoInst *callee = addr;
9106
9107                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9108                                         /* Not tested */
9109                                         GSHAREDVT_FAILURE (*ip);
9110
9111                                 if (cfg->llvm_only)
9112                                         // FIXME:
9113                                         GSHAREDVT_FAILURE (*ip);
9114
9115                                 addr = emit_get_rgctx_sig (cfg, context_used,
9116                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9117                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9118                                 goto calli_end;
9119                         }
9120
9121                         /* Prevent inlining of methods with indirect calls */
9122                         INLINE_FAILURE ("indirect call");
9123
9124                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9125                                 MonoJumpInfoType info_type;
9126                                 gpointer info_data;
9127
9128                                 /*
9129                                  * Instead of emitting an indirect call, emit a direct call
9130                                  * with the contents of the aotconst as the patch info.
9131                                  */
9132                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9133                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9134                                         info_data = addr->inst_p0;
9135                                 } else {
9136                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9137                                         info_data = addr->inst_right->inst_left;
9138                                 }
9139
9140                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9141                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9142                                         NULLIFY_INS (addr);
9143                                         goto calli_end;
9144                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9145                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9146                                         NULLIFY_INS (addr);
9147                                         goto calli_end;
9148                                 }
9149                         }
9150                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9151
9152                         calli_end:
9153
9154                         /* End of call, INS should contain the result of the call, if any */
9155
9156                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9157                                 g_assert (ins);
9158                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9159                         }
9160
9161                         CHECK_CFG_EXCEPTION;
9162
9163                         ip += 5;
9164                         ins_flag = 0;
9165                         constrained_class = NULL;
9166                         break;
9167                 }
9168                 case CEE_CALL:
9169                 case CEE_CALLVIRT: {
9170                         MonoInst *addr = NULL;
9171                         MonoMethodSignature *fsig = NULL;
9172                         int array_rank = 0;
9173                         int virtual_ = *ip == CEE_CALLVIRT;
9174                         gboolean pass_imt_from_rgctx = FALSE;
9175                         MonoInst *imt_arg = NULL;
9176                         MonoInst *keep_this_alive = NULL;
9177                         gboolean pass_vtable = FALSE;
9178                         gboolean pass_mrgctx = FALSE;
9179                         MonoInst *vtable_arg = NULL;
9180                         gboolean check_this = FALSE;
9181                         gboolean supported_tail_call = FALSE;
9182                         gboolean tail_call = FALSE;
9183                         gboolean need_seq_point = FALSE;
9184                         guint32 call_opcode = *ip;
9185                         gboolean emit_widen = TRUE;
9186                         gboolean push_res = TRUE;
9187                         gboolean skip_ret = FALSE;
9188                         gboolean delegate_invoke = FALSE;
9189                         gboolean direct_icall = FALSE;
9190                         gboolean constrained_partial_call = FALSE;
9191                         MonoMethod *cil_method;
9192
9193                         CHECK_OPSIZE (5);
9194                         token = read32 (ip + 1);
9195
9196                         ins = NULL;
9197
9198                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9199                         CHECK_CFG_ERROR;
9200
9201                         cil_method = cmethod;
9202
9203                         if (constrained_class) {
9204                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9205                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9206                                                 g_assert (!cmethod->klass->valuetype);
9207                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9208                                                         constrained_partial_call = TRUE;
9209                                         }
9210                                 }
9211
9212                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9213                                         if (cfg->verbose_level > 2)
9214                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9215                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9216                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9217                                                   cfg->gshared)) {
9218                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9219                                                 CHECK_CFG_ERROR;
9220                                         }
9221                                 } else {
9222                                         if (cfg->verbose_level > 2)
9223                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9224
9225                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9226                                                 /*
9227                                                  * This is needed since get_method_constrained can't find
9228                                                  * the method in klass representing a type var.
9229                                                  * The type var is guaranteed to be a reference type in this
9230                                                  * case.
9231                                                  */
9232                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9233                                                         g_assert (!cmethod->klass->valuetype);
9234                                         } else {
9235                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9236                                                 CHECK_CFG_ERROR;
9237                                         }
9238                                 }
9239                         }
9240
9241                         if (!dont_verify && !cfg->skip_visibility) {
9242                                 MonoMethod *target_method = cil_method;
9243                                 if (method->is_inflated) {
9244                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9245                                         CHECK_CFG_ERROR;
9246                                 }
9247                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9248                                         !mono_method_can_access_method (method, cil_method))
9249                                         emit_method_access_failure (cfg, method, cil_method);
9250                         }
9251
9252                         if (mono_security_core_clr_enabled ())
9253                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9254
9255                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9256                                 /* MS.NET seems to silently convert this to a callvirt */
9257                                 virtual_ = 1;
9258
9259                         {
9260                                 /*
9261                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9262                                  * converts to a callvirt.
9263                                  *
9264                                  * tests/bug-515884.il is an example of this behavior
9265                                  */
9266                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9267                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9268                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9269                                         virtual_ = 1;
9270                         }
9271
9272                         if (!cmethod->klass->inited)
9273                                 if (!mono_class_init (cmethod->klass))
9274                                         TYPE_LOAD_ERROR (cmethod->klass);
9275
9276                         fsig = mono_method_signature (cmethod);
9277                         if (!fsig)
9278                                 LOAD_ERROR;
9279                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9280                                 mini_class_is_system_array (cmethod->klass)) {
9281                                 array_rank = cmethod->klass->rank;
9282                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9283                                 direct_icall = TRUE;
9284                         } else if (fsig->pinvoke) {
9285                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9286                                 fsig = mono_method_signature (wrapper);
9287                         } else if (constrained_class) {
9288                         } else {
9289                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9290                                 CHECK_CFG_ERROR;
9291                         }
9292
9293                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
9294                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9295
9296                         /* See code below */
9297                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9298                                 MonoBasicBlock *tbb;
9299
9300                                 GET_BBLOCK (cfg, tbb, ip + 5);
9301                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9302                                         /*
9303                                          * We want to extend the try block to cover the call, but we can't do it if the
9304                                          * call is made directly since its followed by an exception check.
9305                                          */
9306                                         direct_icall = FALSE;
9307                                 }
9308                         }
9309
9310                         mono_save_token_info (cfg, image, token, cil_method);
9311
9312                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9313                                 need_seq_point = TRUE;
9314
9315                         /* Don't support calls made using type arguments for now */
9316                         /*
9317                           if (cfg->gsharedvt) {
9318                           if (mini_is_gsharedvt_signature (fsig))
9319                           GSHAREDVT_FAILURE (*ip);
9320                           }
9321                         */
9322
9323                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9324                                 g_assert_not_reached ();
9325
9326                         n = fsig->param_count + fsig->hasthis;
9327
9328                         if (!cfg->gshared && cmethod->klass->generic_container)
9329                                 UNVERIFIED;
9330
9331                         if (!cfg->gshared)
9332                                 g_assert (!mono_method_check_context_used (cmethod));
9333
9334                         CHECK_STACK (n);
9335
9336                         //g_assert (!virtual_ || fsig->hasthis);
9337
9338                         sp -= n;
9339
9340                         /*
9341                          * We have the `constrained.' prefix opcode.
9342                          */
9343                         if (constrained_class) {
9344                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9345                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9346                                                 /* The 'Own method' case below */
9347                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9348                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9349                                         } else {
9350                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9351                                                 CHECK_CFG_EXCEPTION;
9352                                                 g_assert (ins);
9353                                                 goto call_end;
9354                                         }
9355                                 }
9356
9357                                 if (constrained_partial_call) {
9358                                         gboolean need_box = TRUE;
9359
9360                                         /*
9361                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9362                                          * called method is not known at compile time either. The called method could end up being
9363                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9364                                          * to box the receiver.
9365                                          * A simple solution would be to box always and make a normal virtual call, but that would
9366                                          * be bad performance wise.
9367                                          */
9368                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9369                                                 /*
9370                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9371                                                  */
9372                                                 need_box = FALSE;
9373                                         }
9374
9375                                         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)) {
9376                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9377                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9378                                                 ins->klass = constrained_class;
9379                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9380                                                 CHECK_CFG_EXCEPTION;
9381                                         } else if (need_box) {
9382                                                 MonoInst *box_type;
9383                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9384                                                 MonoInst *nonbox_call;
9385
9386                                                 /*
9387                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9388                                                  * if needed.
9389                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9390                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9391                                                  */
9392                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9393
9394                                                 NEW_BBLOCK (cfg, is_ref_bb);
9395                                                 NEW_BBLOCK (cfg, end_bb);
9396
9397                                                 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);
9398                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9399                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9400
9401                                                 /* Non-ref case */
9402                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9403
9404                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9405
9406                                                 /* Ref case */
9407                                                 MONO_START_BB (cfg, is_ref_bb);
9408                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9409                                                 ins->klass = constrained_class;
9410                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9411                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9412
9413                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9414
9415                                                 MONO_START_BB (cfg, end_bb);
9416                                                 cfg->cbb = end_bb;
9417
9418                                                 nonbox_call->dreg = ins->dreg;
9419                                                 goto call_end;
9420                                         } else {
9421                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9422                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9423                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9424                                                 goto call_end;
9425                                         }
9426                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9427                                         /*
9428                                          * The type parameter is instantiated as a valuetype,
9429                                          * but that type doesn't override the method we're
9430                                          * calling, so we need to box `this'.
9431                                          */
9432                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9433                                         ins->klass = constrained_class;
9434                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9435                                         CHECK_CFG_EXCEPTION;
9436                                 } else if (!constrained_class->valuetype) {
9437                                         int dreg = alloc_ireg_ref (cfg);
9438
9439                                         /*
9440                                          * The type parameter is instantiated as a reference
9441                                          * type.  We have a managed pointer on the stack, so
9442                                          * we need to dereference it here.
9443                                          */
9444                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9445                                         ins->type = STACK_OBJ;
9446                                         sp [0] = ins;
9447                                 } else {
9448                                         if (cmethod->klass->valuetype) {
9449                                                 /* Own method */
9450                                         } else {
9451                                                 /* Interface method */
9452                                                 int ioffset, slot;
9453
9454                                                 mono_class_setup_vtable (constrained_class);
9455                                                 CHECK_TYPELOAD (constrained_class);
9456                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9457                                                 if (ioffset == -1)
9458                                                         TYPE_LOAD_ERROR (constrained_class);
9459                                                 slot = mono_method_get_vtable_slot (cmethod);
9460                                                 if (slot == -1)
9461                                                         TYPE_LOAD_ERROR (cmethod->klass);
9462                                                 cmethod = constrained_class->vtable [ioffset + slot];
9463
9464                                                 if (cmethod->klass == mono_defaults.enum_class) {
9465                                                         /* Enum implements some interfaces, so treat this as the first case */
9466                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9467                                                         ins->klass = constrained_class;
9468                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9469                                                         CHECK_CFG_EXCEPTION;
9470                                                 }
9471                                         }
9472                                         virtual_ = 0;
9473                                 }
9474                                 constrained_class = NULL;
9475                         }
9476
9477                         if (check_call_signature (cfg, fsig, sp))
9478                                 UNVERIFIED;
9479
9480                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9481                                 delegate_invoke = TRUE;
9482
9483                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9484                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9485                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9486                                         emit_widen = FALSE;
9487                                 }
9488
9489                                 goto call_end;
9490                         }
9491
9492                         /*
9493                          * If the callee is a shared method, then its static cctor
9494                          * might not get called after the call was patched.
9495                          */
9496                         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)) {
9497                                 emit_class_init (cfg, cmethod->klass);
9498                                 CHECK_TYPELOAD (cmethod->klass);
9499                         }
9500
9501                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9502
9503                         if (cfg->gshared) {
9504                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9505
9506                                 context_used = mini_method_check_context_used (cfg, cmethod);
9507
9508                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9509                                         /* Generic method interface
9510                                            calls are resolved via a
9511                                            helper function and don't
9512                                            need an imt. */
9513                                         if (!cmethod_context || !cmethod_context->method_inst)
9514                                                 pass_imt_from_rgctx = TRUE;
9515                                 }
9516
9517                                 /*
9518                                  * If a shared method calls another
9519                                  * shared method then the caller must
9520                                  * have a generic sharing context
9521                                  * because the magic trampoline
9522                                  * requires it.  FIXME: We shouldn't
9523                                  * have to force the vtable/mrgctx
9524                                  * variable here.  Instead there
9525                                  * should be a flag in the cfg to
9526                                  * request a generic sharing context.
9527                                  */
9528                                 if (context_used &&
9529                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9530                                         mono_get_vtable_var (cfg);
9531                         }
9532
9533                         if (pass_vtable) {
9534                                 if (context_used) {
9535                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9536                                 } else {
9537                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9538
9539                                         CHECK_TYPELOAD (cmethod->klass);
9540                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9541                                 }
9542                         }
9543
9544                         if (pass_mrgctx) {
9545                                 g_assert (!vtable_arg);
9546
9547                                 if (!cfg->compile_aot) {
9548                                         /*
9549                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9550                                          * for type load errors before.
9551                                          */
9552                                         mono_class_setup_vtable (cmethod->klass);
9553                                         CHECK_TYPELOAD (cmethod->klass);
9554                                 }
9555
9556                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9557
9558                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9559                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9560                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9561                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9562                                         if (virtual_)
9563                                                 check_this = TRUE;
9564                                         virtual_ = 0;
9565                                 }
9566                         }
9567
9568                         if (pass_imt_from_rgctx) {
9569                                 g_assert (!pass_vtable);
9570
9571                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9572                                         cmethod, MONO_RGCTX_INFO_METHOD);
9573                         }
9574
9575                         if (check_this)
9576                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9577
9578                         /* Calling virtual generic methods */
9579                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9580                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9581                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9582                             fsig->generic_param_count &&
9583                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9584                                 !cfg->llvm_only) {
9585                                 MonoInst *this_temp, *this_arg_temp, *store;
9586                                 MonoInst *iargs [4];
9587
9588                                 g_assert (fsig->is_inflated);
9589
9590                                 /* Prevent inlining of methods that contain indirect calls */
9591                                 INLINE_FAILURE ("virtual generic call");
9592
9593                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9594                                         GSHAREDVT_FAILURE (*ip);
9595
9596                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9597                                         g_assert (!imt_arg);
9598                                         if (!context_used)
9599                                                 g_assert (cmethod->is_inflated);
9600                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9601                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9602                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9603                                 } else {
9604                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9605                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9606                                         MONO_ADD_INS (cfg->cbb, store);
9607
9608                                         /* FIXME: This should be a managed pointer */
9609                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9610
9611                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9612                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9613                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9614                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9615                                         addr = mono_emit_jit_icall (cfg,
9616                                                                                                 mono_helper_compile_generic_method, iargs);
9617
9618                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9619
9620                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9621                                 }
9622
9623                                 goto call_end;
9624                         }
9625
9626                         /*
9627                          * Implement a workaround for the inherent races involved in locking:
9628                          * Monitor.Enter ()
9629                          * try {
9630                          * } finally {
9631                          *    Monitor.Exit ()
9632                          * }
9633                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9634                          * try block, the Exit () won't be executed, see:
9635                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9636                          * To work around this, we extend such try blocks to include the last x bytes
9637                          * of the Monitor.Enter () call.
9638                          */
9639                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9640                                 MonoBasicBlock *tbb;
9641
9642                                 GET_BBLOCK (cfg, tbb, ip + 5);
9643                                 /*
9644                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9645                                  * from Monitor.Enter like ArgumentNullException.
9646                                  */
9647                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9648                                         /* Mark this bblock as needing to be extended */
9649                                         tbb->extend_try_block = TRUE;
9650                                 }
9651                         }
9652
9653                         /* Conversion to a JIT intrinsic */
9654                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9655                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9656                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9657                                         emit_widen = FALSE;
9658                                 }
9659                                 goto call_end;
9660                         }
9661                         CHECK_CFG_ERROR;
9662
9663                         /* Inlining */
9664                         if ((cfg->opt & MONO_OPT_INLINE) &&
9665                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9666                             mono_method_check_inlining (cfg, cmethod)) {
9667                                 int costs;
9668                                 gboolean always = FALSE;
9669
9670                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9671                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9672                                         /* Prevent inlining of methods that call wrappers */
9673                                         INLINE_FAILURE ("wrapper call");
9674                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9675                                         always = TRUE;
9676                                 }
9677
9678                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9679                                 if (costs) {
9680                                         cfg->real_offset += 5;
9681
9682                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9683                                                 /* *sp is already set by inline_method */
9684                                                 sp++;
9685                                                 push_res = FALSE;
9686                                         }
9687
9688                                         inline_costs += costs;
9689
9690                                         goto call_end;
9691                                 }
9692                         }
9693
9694                         /* Tail recursion elimination */
9695                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9696                                 gboolean has_vtargs = FALSE;
9697                                 int i;
9698
9699                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9700                                 INLINE_FAILURE ("tail call");
9701
9702                                 /* keep it simple */
9703                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9704                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9705                                                 has_vtargs = TRUE;
9706                                 }
9707
9708                                 if (!has_vtargs) {
9709                                         for (i = 0; i < n; ++i)
9710                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9711                                         MONO_INST_NEW (cfg, ins, OP_BR);
9712                                         MONO_ADD_INS (cfg->cbb, ins);
9713                                         tblock = start_bblock->out_bb [0];
9714                                         link_bblock (cfg, cfg->cbb, tblock);
9715                                         ins->inst_target_bb = tblock;
9716                                         start_new_bblock = 1;
9717
9718                                         /* skip the CEE_RET, too */
9719                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9720                                                 skip_ret = TRUE;
9721                                         push_res = FALSE;
9722                                         goto call_end;
9723                                 }
9724                         }
9725
9726                         inline_costs += 10 * num_calls++;
9727
9728                         /*
9729                          * Making generic calls out of gsharedvt methods.
9730                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9731                          * patching gshared method addresses into a gsharedvt method.
9732                          */
9733                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9734                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9735                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9736                                 MonoRgctxInfoType info_type;
9737
9738                                 if (virtual_) {
9739                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9740                                                 //GSHAREDVT_FAILURE (*ip);
9741                                         // disable for possible remoting calls
9742                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9743                                                 GSHAREDVT_FAILURE (*ip);
9744                                         if (fsig->generic_param_count) {
9745                                                 /* virtual generic call */
9746                                                 g_assert (!imt_arg);
9747                                                 /* Same as the virtual generic case above */
9748                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9749                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9750                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9751                                                 vtable_arg = NULL;
9752                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9753                                                 /* This can happen when we call a fully instantiated iface method */
9754                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9755                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9756                                                 vtable_arg = NULL;
9757                                         }
9758                                 }
9759
9760                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9761                                         keep_this_alive = sp [0];
9762
9763                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9764                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9765                                 else
9766                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9767                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9768
9769                                 if (cfg->llvm_only) {
9770                                         // FIXME: Avoid initializing vtable_arg
9771                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9772                                 } else {
9773                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9774                                 }
9775                                 goto call_end;
9776                         }
9777
9778                         /* Generic sharing */
9779
9780                         /*
9781                          * Use this if the callee is gsharedvt sharable too, since
9782                          * at runtime we might find an instantiation so the call cannot
9783                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9784                          */
9785                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9786                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9787                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9788                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9789                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9790                                 INLINE_FAILURE ("gshared");
9791
9792                                 g_assert (cfg->gshared && cmethod);
9793                                 g_assert (!addr);
9794
9795                                 /*
9796                                  * We are compiling a call to a
9797                                  * generic method from shared code,
9798                                  * which means that we have to look up
9799                                  * the method in the rgctx and do an
9800                                  * indirect call.
9801                                  */
9802                                 if (fsig->hasthis)
9803                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9804
9805                                 if (cfg->llvm_only) {
9806                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9807                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9808                                         else
9809                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9810                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9811                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9812                                 } else {
9813                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9814                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9815                                 }
9816                                 goto call_end;
9817                         }
9818
9819                         /* Direct calls to icalls */
9820                         if (direct_icall) {
9821                                 MonoMethod *wrapper;
9822                                 int costs;
9823
9824                                 /* Inline the wrapper */
9825                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9826
9827                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9828                                 g_assert (costs > 0);
9829                                 cfg->real_offset += 5;
9830
9831                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9832                                         /* *sp is already set by inline_method */
9833                                         sp++;
9834                                         push_res = FALSE;
9835                                 }
9836
9837                                 inline_costs += costs;
9838
9839                                 goto call_end;
9840                         }
9841
9842                         /* Array methods */
9843                         if (array_rank) {
9844                                 MonoInst *addr;
9845
9846                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9847                                         MonoInst *val = sp [fsig->param_count];
9848
9849                                         if (val->type == STACK_OBJ) {
9850                                                 MonoInst *iargs [2];
9851
9852                                                 iargs [0] = sp [0];
9853                                                 iargs [1] = val;
9854
9855                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9856                                         }
9857
9858                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9859                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9860                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9861                                                 emit_write_barrier (cfg, addr, val);
9862                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9863                                                 GSHAREDVT_FAILURE (*ip);
9864                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9865                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9866
9867                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9868                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9869                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9870                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9871                                         CHECK_TYPELOAD (cmethod->klass);
9872
9873                                         readonly = FALSE;
9874                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9875                                         ins = addr;
9876                                 } else {
9877                                         g_assert_not_reached ();
9878                                 }
9879
9880                                 emit_widen = FALSE;
9881                                 goto call_end;
9882                         }
9883
9884                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9885                         if (ins)
9886                                 goto call_end;
9887
9888                         /* Tail prefix / tail call optimization */
9889
9890                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9891                         /* FIXME: runtime generic context pointer for jumps? */
9892                         /* FIXME: handle this for generic sharing eventually */
9893                         if ((ins_flag & MONO_INST_TAILCALL) &&
9894                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9895                                 supported_tail_call = TRUE;
9896
9897                         if (supported_tail_call) {
9898                                 MonoCallInst *call;
9899
9900                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9901                                 INLINE_FAILURE ("tail call");
9902
9903                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9904
9905                                 if (cfg->backend->have_op_tail_call) {
9906                                         /* Handle tail calls similarly to normal calls */
9907                                         tail_call = TRUE;
9908                                 } else {
9909                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9910
9911                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9912                                         call->tail_call = TRUE;
9913                                         call->method = cmethod;
9914                                         call->signature = mono_method_signature (cmethod);
9915
9916                                         /*
9917                                          * We implement tail calls by storing the actual arguments into the
9918                                          * argument variables, then emitting a CEE_JMP.
9919                                          */
9920                                         for (i = 0; i < n; ++i) {
9921                                                 /* Prevent argument from being register allocated */
9922                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9923                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9924                                         }
9925                                         ins = (MonoInst*)call;
9926                                         ins->inst_p0 = cmethod;
9927                                         ins->inst_p1 = arg_array [0];
9928                                         MONO_ADD_INS (cfg->cbb, ins);
9929                                         link_bblock (cfg, cfg->cbb, end_bblock);
9930                                         start_new_bblock = 1;
9931
9932                                         // FIXME: Eliminate unreachable epilogs
9933
9934                                         /*
9935                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9936                                          * only reachable from this call.
9937                                          */
9938                                         GET_BBLOCK (cfg, tblock, ip + 5);
9939                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9940                                                 skip_ret = TRUE;
9941                                         push_res = FALSE;
9942
9943                                         goto call_end;
9944                                 }
9945                         }
9946
9947                         /*
9948                          * Synchronized wrappers.
9949                          * Its hard to determine where to replace a method with its synchronized
9950                          * wrapper without causing an infinite recursion. The current solution is
9951                          * to add the synchronized wrapper in the trampolines, and to
9952                          * change the called method to a dummy wrapper, and resolve that wrapper
9953                          * to the real method in mono_jit_compile_method ().
9954                          */
9955                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9956                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9957                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9958                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9959                         }
9960
9961                         /*
9962                          * Virtual calls in llvm-only mode.
9963                          */
9964                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9965                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9966                                 goto call_end;
9967                         }
9968
9969                         /* Common call */
9970                         INLINE_FAILURE ("call");
9971                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9972                                                                                           imt_arg, vtable_arg);
9973
9974                         if (tail_call && !cfg->llvm_only) {
9975                                 link_bblock (cfg, cfg->cbb, end_bblock);
9976                                 start_new_bblock = 1;
9977
9978                                 // FIXME: Eliminate unreachable epilogs
9979
9980                                 /*
9981                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9982                                  * only reachable from this call.
9983                                  */
9984                                 GET_BBLOCK (cfg, tblock, ip + 5);
9985                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9986                                         skip_ret = TRUE;
9987                                 push_res = FALSE;
9988                         }
9989
9990                         call_end:
9991
9992                         /* End of call, INS should contain the result of the call, if any */
9993
9994                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9995                                 g_assert (ins);
9996                                 if (emit_widen)
9997                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9998                                 else
9999                                         *sp++ = ins;
10000                         }
10001
10002                         if (keep_this_alive) {
10003                                 MonoInst *dummy_use;
10004
10005                                 /* See mono_emit_method_call_full () */
10006                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10007                         }
10008
10009                         CHECK_CFG_EXCEPTION;
10010
10011                         ip += 5;
10012                         if (skip_ret) {
10013                                 g_assert (*ip == CEE_RET);
10014                                 ip += 1;
10015                         }
10016                         ins_flag = 0;
10017                         constrained_class = NULL;
10018                         if (need_seq_point)
10019                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10020                         break;
10021                 }
10022                 case CEE_RET:
10023                         if (cfg->method != method) {
10024                                 /* return from inlined method */
10025                                 /*
10026                                  * If in_count == 0, that means the ret is unreachable due to
10027                                  * being preceeded by a throw. In that case, inline_method () will
10028                                  * handle setting the return value
10029                                  * (test case: test_0_inline_throw ()).
10030                                  */
10031                                 if (return_var && cfg->cbb->in_count) {
10032                                         MonoType *ret_type = mono_method_signature (method)->ret;
10033
10034                                         MonoInst *store;
10035                                         CHECK_STACK (1);
10036                                         --sp;
10037
10038                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10039                                                 UNVERIFIED;
10040
10041                                         //g_assert (returnvar != -1);
10042                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10043                                         cfg->ret_var_set = TRUE;
10044                                 }
10045                         } else {
10046                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10047
10048                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10049                                         emit_pop_lmf (cfg);
10050
10051                                 if (cfg->ret) {
10052                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10053
10054                                         if (seq_points && !sym_seq_points) {
10055                                                 /*
10056                                                  * Place a seq point here too even through the IL stack is not
10057                                                  * empty, so a step over on
10058                                                  * call <FOO>
10059                                                  * ret
10060                                                  * will work correctly.
10061                                                  */
10062                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10063                                                 MONO_ADD_INS (cfg->cbb, ins);
10064                                         }
10065
10066                                         g_assert (!return_var);
10067                                         CHECK_STACK (1);
10068                                         --sp;
10069
10070                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10071                                                 UNVERIFIED;
10072
10073                                         emit_setret (cfg, *sp);
10074                                 }
10075                         }
10076                         if (sp != stack_start)
10077                                 UNVERIFIED;
10078                         MONO_INST_NEW (cfg, ins, OP_BR);
10079                         ip++;
10080                         ins->inst_target_bb = end_bblock;
10081                         MONO_ADD_INS (cfg->cbb, ins);
10082                         link_bblock (cfg, cfg->cbb, end_bblock);
10083                         start_new_bblock = 1;
10084                         break;
10085                 case CEE_BR_S:
10086                         CHECK_OPSIZE (2);
10087                         MONO_INST_NEW (cfg, ins, OP_BR);
10088                         ip++;
10089                         target = ip + 1 + (signed char)(*ip);
10090                         ++ip;
10091                         GET_BBLOCK (cfg, tblock, target);
10092                         link_bblock (cfg, cfg->cbb, tblock);
10093                         ins->inst_target_bb = tblock;
10094                         if (sp != stack_start) {
10095                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10096                                 sp = stack_start;
10097                                 CHECK_UNVERIFIABLE (cfg);
10098                         }
10099                         MONO_ADD_INS (cfg->cbb, ins);
10100                         start_new_bblock = 1;
10101                         inline_costs += BRANCH_COST;
10102                         break;
10103                 case CEE_BEQ_S:
10104                 case CEE_BGE_S:
10105                 case CEE_BGT_S:
10106                 case CEE_BLE_S:
10107                 case CEE_BLT_S:
10108                 case CEE_BNE_UN_S:
10109                 case CEE_BGE_UN_S:
10110                 case CEE_BGT_UN_S:
10111                 case CEE_BLE_UN_S:
10112                 case CEE_BLT_UN_S:
10113                         CHECK_OPSIZE (2);
10114                         CHECK_STACK (2);
10115                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10116                         ip++;
10117                         target = ip + 1 + *(signed char*)ip;
10118                         ip++;
10119
10120                         ADD_BINCOND (NULL);
10121
10122                         sp = stack_start;
10123                         inline_costs += BRANCH_COST;
10124                         break;
10125                 case CEE_BR:
10126                         CHECK_OPSIZE (5);
10127                         MONO_INST_NEW (cfg, ins, OP_BR);
10128                         ip++;
10129
10130                         target = ip + 4 + (gint32)read32(ip);
10131                         ip += 4;
10132                         GET_BBLOCK (cfg, tblock, target);
10133                         link_bblock (cfg, cfg->cbb, tblock);
10134                         ins->inst_target_bb = tblock;
10135                         if (sp != stack_start) {
10136                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10137                                 sp = stack_start;
10138                                 CHECK_UNVERIFIABLE (cfg);
10139                         }
10140
10141                         MONO_ADD_INS (cfg->cbb, ins);
10142
10143                         start_new_bblock = 1;
10144                         inline_costs += BRANCH_COST;
10145                         break;
10146                 case CEE_BRFALSE_S:
10147                 case CEE_BRTRUE_S:
10148                 case CEE_BRFALSE:
10149                 case CEE_BRTRUE: {
10150                         MonoInst *cmp;
10151                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10152                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10153                         guint32 opsize = is_short ? 1 : 4;
10154
10155                         CHECK_OPSIZE (opsize);
10156                         CHECK_STACK (1);
10157                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10158                                 UNVERIFIED;
10159                         ip ++;
10160                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10161                         ip += opsize;
10162
10163                         sp--;
10164
10165                         GET_BBLOCK (cfg, tblock, target);
10166                         link_bblock (cfg, cfg->cbb, tblock);
10167                         GET_BBLOCK (cfg, tblock, ip);
10168                         link_bblock (cfg, cfg->cbb, tblock);
10169
10170                         if (sp != stack_start) {
10171                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10172                                 CHECK_UNVERIFIABLE (cfg);
10173                         }
10174
10175                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10176                         cmp->sreg1 = sp [0]->dreg;
10177                         type_from_op (cfg, cmp, sp [0], NULL);
10178                         CHECK_TYPE (cmp);
10179
10180 #if SIZEOF_REGISTER == 4
10181                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10182                                 /* Convert it to OP_LCOMPARE */
10183                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10184                                 ins->type = STACK_I8;
10185                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10186                                 ins->inst_l = 0;
10187                                 MONO_ADD_INS (cfg->cbb, ins);
10188                                 cmp->opcode = OP_LCOMPARE;
10189                                 cmp->sreg2 = ins->dreg;
10190                         }
10191 #endif
10192                         MONO_ADD_INS (cfg->cbb, cmp);
10193
10194                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10195                         type_from_op (cfg, ins, sp [0], NULL);
10196                         MONO_ADD_INS (cfg->cbb, ins);
10197                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10198                         GET_BBLOCK (cfg, tblock, target);
10199                         ins->inst_true_bb = tblock;
10200                         GET_BBLOCK (cfg, tblock, ip);
10201                         ins->inst_false_bb = tblock;
10202                         start_new_bblock = 2;
10203
10204                         sp = stack_start;
10205                         inline_costs += BRANCH_COST;
10206                         break;
10207                 }
10208                 case CEE_BEQ:
10209                 case CEE_BGE:
10210                 case CEE_BGT:
10211                 case CEE_BLE:
10212                 case CEE_BLT:
10213                 case CEE_BNE_UN:
10214                 case CEE_BGE_UN:
10215                 case CEE_BGT_UN:
10216                 case CEE_BLE_UN:
10217                 case CEE_BLT_UN:
10218                         CHECK_OPSIZE (5);
10219                         CHECK_STACK (2);
10220                         MONO_INST_NEW (cfg, ins, *ip);
10221                         ip++;
10222                         target = ip + 4 + (gint32)read32(ip);
10223                         ip += 4;
10224
10225                         ADD_BINCOND (NULL);
10226
10227                         sp = stack_start;
10228                         inline_costs += BRANCH_COST;
10229                         break;
10230                 case CEE_SWITCH: {
10231                         MonoInst *src1;
10232                         MonoBasicBlock **targets;
10233                         MonoBasicBlock *default_bblock;
10234                         MonoJumpInfoBBTable *table;
10235                         int offset_reg = alloc_preg (cfg);
10236                         int target_reg = alloc_preg (cfg);
10237                         int table_reg = alloc_preg (cfg);
10238                         int sum_reg = alloc_preg (cfg);
10239                         gboolean use_op_switch;
10240
10241                         CHECK_OPSIZE (5);
10242                         CHECK_STACK (1);
10243                         n = read32 (ip + 1);
10244                         --sp;
10245                         src1 = sp [0];
10246                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10247                                 UNVERIFIED;
10248
10249                         ip += 5;
10250                         CHECK_OPSIZE (n * sizeof (guint32));
10251                         target = ip + n * sizeof (guint32);
10252
10253                         GET_BBLOCK (cfg, default_bblock, target);
10254                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10255
10256                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10257                         for (i = 0; i < n; ++i) {
10258                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10259                                 targets [i] = tblock;
10260                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10261                                 ip += 4;
10262                         }
10263
10264                         if (sp != stack_start) {
10265                                 /*
10266                                  * Link the current bb with the targets as well, so handle_stack_args
10267                                  * will set their in_stack correctly.
10268                                  */
10269                                 link_bblock (cfg, cfg->cbb, default_bblock);
10270                                 for (i = 0; i < n; ++i)
10271                                         link_bblock (cfg, cfg->cbb, targets [i]);
10272
10273                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10274                                 sp = stack_start;
10275                                 CHECK_UNVERIFIABLE (cfg);
10276
10277                                 /* Undo the links */
10278                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10279                                 for (i = 0; i < n; ++i)
10280                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10281                         }
10282
10283                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10284                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10285
10286                         for (i = 0; i < n; ++i)
10287                                 link_bblock (cfg, cfg->cbb, targets [i]);
10288
10289                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10290                         table->table = targets;
10291                         table->table_size = n;
10292
10293                         use_op_switch = FALSE;
10294 #ifdef TARGET_ARM
10295                         /* ARM implements SWITCH statements differently */
10296                         /* FIXME: Make it use the generic implementation */
10297                         if (!cfg->compile_aot)
10298                                 use_op_switch = TRUE;
10299 #endif
10300
10301                         if (COMPILE_LLVM (cfg))
10302                                 use_op_switch = TRUE;
10303
10304                         cfg->cbb->has_jump_table = 1;
10305
10306                         if (use_op_switch) {
10307                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10308                                 ins->sreg1 = src1->dreg;
10309                                 ins->inst_p0 = table;
10310                                 ins->inst_many_bb = targets;
10311                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10312                                 MONO_ADD_INS (cfg->cbb, ins);
10313                         } else {
10314                                 if (sizeof (gpointer) == 8)
10315                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10316                                 else
10317                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10318
10319 #if SIZEOF_REGISTER == 8
10320                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10321                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10322 #endif
10323
10324                                 if (cfg->compile_aot) {
10325                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10326                                 } else {
10327                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10328                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10329                                         ins->inst_p0 = table;
10330                                         ins->dreg = table_reg;
10331                                         MONO_ADD_INS (cfg->cbb, ins);
10332                                 }
10333
10334                                 /* FIXME: Use load_memindex */
10335                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10336                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10337                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10338                         }
10339                         start_new_bblock = 1;
10340                         inline_costs += (BRANCH_COST * 2);
10341                         break;
10342                 }
10343                 case CEE_LDIND_I1:
10344                 case CEE_LDIND_U1:
10345                 case CEE_LDIND_I2:
10346                 case CEE_LDIND_U2:
10347                 case CEE_LDIND_I4:
10348                 case CEE_LDIND_U4:
10349                 case CEE_LDIND_I8:
10350                 case CEE_LDIND_I:
10351                 case CEE_LDIND_R4:
10352                 case CEE_LDIND_R8:
10353                 case CEE_LDIND_REF:
10354                         CHECK_STACK (1);
10355                         --sp;
10356
10357                         switch (*ip) {
10358                         case CEE_LDIND_R4:
10359                         case CEE_LDIND_R8:
10360                                 dreg = alloc_freg (cfg);
10361                                 break;
10362                         case CEE_LDIND_I8:
10363                                 dreg = alloc_lreg (cfg);
10364                                 break;
10365                         case CEE_LDIND_REF:
10366                                 dreg = alloc_ireg_ref (cfg);
10367                                 break;
10368                         default:
10369                                 dreg = alloc_preg (cfg);
10370                         }
10371
10372                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10373                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10374                         if (*ip == CEE_LDIND_R4)
10375                                 ins->type = cfg->r4_stack_type;
10376                         ins->flags |= ins_flag;
10377                         MONO_ADD_INS (cfg->cbb, ins);
10378                         *sp++ = ins;
10379                         if (ins_flag & MONO_INST_VOLATILE) {
10380                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10381                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10382                         }
10383                         ins_flag = 0;
10384                         ++ip;
10385                         break;
10386                 case CEE_STIND_REF:
10387                 case CEE_STIND_I1:
10388                 case CEE_STIND_I2:
10389                 case CEE_STIND_I4:
10390                 case CEE_STIND_I8:
10391                 case CEE_STIND_R4:
10392                 case CEE_STIND_R8:
10393                 case CEE_STIND_I:
10394                         CHECK_STACK (2);
10395                         sp -= 2;
10396
10397                         if (ins_flag & MONO_INST_VOLATILE) {
10398                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10399                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10400                         }
10401
10402                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10403                         ins->flags |= ins_flag;
10404                         ins_flag = 0;
10405
10406                         MONO_ADD_INS (cfg->cbb, ins);
10407
10408                         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)))
10409                                 emit_write_barrier (cfg, sp [0], sp [1]);
10410
10411                         inline_costs += 1;
10412                         ++ip;
10413                         break;
10414
10415                 case CEE_MUL:
10416                         CHECK_STACK (2);
10417
10418                         MONO_INST_NEW (cfg, ins, (*ip));
10419                         sp -= 2;
10420                         ins->sreg1 = sp [0]->dreg;
10421                         ins->sreg2 = sp [1]->dreg;
10422                         type_from_op (cfg, ins, sp [0], sp [1]);
10423                         CHECK_TYPE (ins);
10424                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10425
10426                         /* Use the immediate opcodes if possible */
10427                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10428                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10429                                 if (imm_opcode != -1) {
10430                                         ins->opcode = imm_opcode;
10431                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10432                                         ins->sreg2 = -1;
10433
10434                                         NULLIFY_INS (sp [1]);
10435                                 }
10436                         }
10437
10438                         MONO_ADD_INS ((cfg)->cbb, (ins));
10439
10440                         *sp++ = mono_decompose_opcode (cfg, ins);
10441                         ip++;
10442                         break;
10443                 case CEE_ADD:
10444                 case CEE_SUB:
10445                 case CEE_DIV:
10446                 case CEE_DIV_UN:
10447                 case CEE_REM:
10448                 case CEE_REM_UN:
10449                 case CEE_AND:
10450                 case CEE_OR:
10451                 case CEE_XOR:
10452                 case CEE_SHL:
10453                 case CEE_SHR:
10454                 case CEE_SHR_UN:
10455                         CHECK_STACK (2);
10456
10457                         MONO_INST_NEW (cfg, ins, (*ip));
10458                         sp -= 2;
10459                         ins->sreg1 = sp [0]->dreg;
10460                         ins->sreg2 = sp [1]->dreg;
10461                         type_from_op (cfg, ins, sp [0], sp [1]);
10462                         CHECK_TYPE (ins);
10463                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10464                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10465
10466                         /* FIXME: Pass opcode to is_inst_imm */
10467
10468                         /* Use the immediate opcodes if possible */
10469                         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)) {
10470                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10471                                 if (imm_opcode != -1) {
10472                                         ins->opcode = imm_opcode;
10473                                         if (sp [1]->opcode == OP_I8CONST) {
10474 #if SIZEOF_REGISTER == 8
10475                                                 ins->inst_imm = sp [1]->inst_l;
10476 #else
10477                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10478                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10479 #endif
10480                                         }
10481                                         else
10482                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10483                                         ins->sreg2 = -1;
10484
10485                                         /* Might be followed by an instruction added by add_widen_op */
10486                                         if (sp [1]->next == NULL)
10487                                                 NULLIFY_INS (sp [1]);
10488                                 }
10489                         }
10490                         MONO_ADD_INS ((cfg)->cbb, (ins));
10491
10492                         *sp++ = mono_decompose_opcode (cfg, ins);
10493                         ip++;
10494                         break;
10495                 case CEE_NEG:
10496                 case CEE_NOT:
10497                 case CEE_CONV_I1:
10498                 case CEE_CONV_I2:
10499                 case CEE_CONV_I4:
10500                 case CEE_CONV_R4:
10501                 case CEE_CONV_R8:
10502                 case CEE_CONV_U4:
10503                 case CEE_CONV_I8:
10504                 case CEE_CONV_U8:
10505                 case CEE_CONV_OVF_I8:
10506                 case CEE_CONV_OVF_U8:
10507                 case CEE_CONV_R_UN:
10508                         CHECK_STACK (1);
10509
10510                         /* Special case this earlier so we have long constants in the IR */
10511                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10512                                 int data = sp [-1]->inst_c0;
10513                                 sp [-1]->opcode = OP_I8CONST;
10514                                 sp [-1]->type = STACK_I8;
10515 #if SIZEOF_REGISTER == 8
10516                                 if ((*ip) == CEE_CONV_U8)
10517                                         sp [-1]->inst_c0 = (guint32)data;
10518                                 else
10519                                         sp [-1]->inst_c0 = data;
10520 #else
10521                                 sp [-1]->inst_ls_word = data;
10522                                 if ((*ip) == CEE_CONV_U8)
10523                                         sp [-1]->inst_ms_word = 0;
10524                                 else
10525                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10526 #endif
10527                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10528                         }
10529                         else {
10530                                 ADD_UNOP (*ip);
10531                         }
10532                         ip++;
10533                         break;
10534                 case CEE_CONV_OVF_I4:
10535                 case CEE_CONV_OVF_I1:
10536                 case CEE_CONV_OVF_I2:
10537                 case CEE_CONV_OVF_I:
10538                 case CEE_CONV_OVF_U:
10539                         CHECK_STACK (1);
10540
10541                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10542                                 ADD_UNOP (CEE_CONV_OVF_I8);
10543                                 ADD_UNOP (*ip);
10544                         } else {
10545                                 ADD_UNOP (*ip);
10546                         }
10547                         ip++;
10548                         break;
10549                 case CEE_CONV_OVF_U1:
10550                 case CEE_CONV_OVF_U2:
10551                 case CEE_CONV_OVF_U4:
10552                         CHECK_STACK (1);
10553
10554                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10555                                 ADD_UNOP (CEE_CONV_OVF_U8);
10556                                 ADD_UNOP (*ip);
10557                         } else {
10558                                 ADD_UNOP (*ip);
10559                         }
10560                         ip++;
10561                         break;
10562                 case CEE_CONV_OVF_I1_UN:
10563                 case CEE_CONV_OVF_I2_UN:
10564                 case CEE_CONV_OVF_I4_UN:
10565                 case CEE_CONV_OVF_I8_UN:
10566                 case CEE_CONV_OVF_U1_UN:
10567                 case CEE_CONV_OVF_U2_UN:
10568                 case CEE_CONV_OVF_U4_UN:
10569                 case CEE_CONV_OVF_U8_UN:
10570                 case CEE_CONV_OVF_I_UN:
10571                 case CEE_CONV_OVF_U_UN:
10572                 case CEE_CONV_U2:
10573                 case CEE_CONV_U1:
10574                 case CEE_CONV_I:
10575                 case CEE_CONV_U:
10576                         CHECK_STACK (1);
10577                         ADD_UNOP (*ip);
10578                         CHECK_CFG_EXCEPTION;
10579                         ip++;
10580                         break;
10581                 case CEE_ADD_OVF:
10582                 case CEE_ADD_OVF_UN:
10583                 case CEE_MUL_OVF:
10584                 case CEE_MUL_OVF_UN:
10585                 case CEE_SUB_OVF:
10586                 case CEE_SUB_OVF_UN:
10587                         CHECK_STACK (2);
10588                         ADD_BINOP (*ip);
10589                         ip++;
10590                         break;
10591                 case CEE_CPOBJ:
10592                         GSHAREDVT_FAILURE (*ip);
10593                         CHECK_OPSIZE (5);
10594                         CHECK_STACK (2);
10595                         token = read32 (ip + 1);
10596                         klass = mini_get_class (method, token, generic_context);
10597                         CHECK_TYPELOAD (klass);
10598                         sp -= 2;
10599                         if (generic_class_is_reference_type (cfg, klass)) {
10600                                 MonoInst *store, *load;
10601                                 int dreg = alloc_ireg_ref (cfg);
10602
10603                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10604                                 load->flags |= ins_flag;
10605                                 MONO_ADD_INS (cfg->cbb, load);
10606
10607                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10608                                 store->flags |= ins_flag;
10609                                 MONO_ADD_INS (cfg->cbb, store);
10610
10611                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10612                                         emit_write_barrier (cfg, sp [0], sp [1]);
10613                         } else {
10614                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10615                         }
10616                         ins_flag = 0;
10617                         ip += 5;
10618                         break;
10619                 case CEE_LDOBJ: {
10620                         int loc_index = -1;
10621                         int stloc_len = 0;
10622
10623                         CHECK_OPSIZE (5);
10624                         CHECK_STACK (1);
10625                         --sp;
10626                         token = read32 (ip + 1);
10627                         klass = mini_get_class (method, token, generic_context);
10628                         CHECK_TYPELOAD (klass);
10629
10630                         /* Optimize the common ldobj+stloc combination */
10631                         switch (ip [5]) {
10632                         case CEE_STLOC_S:
10633                                 loc_index = ip [6];
10634                                 stloc_len = 2;
10635                                 break;
10636                         case CEE_STLOC_0:
10637                         case CEE_STLOC_1:
10638                         case CEE_STLOC_2:
10639                         case CEE_STLOC_3:
10640                                 loc_index = ip [5] - CEE_STLOC_0;
10641                                 stloc_len = 1;
10642                                 break;
10643                         default:
10644                                 break;
10645                         }
10646
10647                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10648                                 CHECK_LOCAL (loc_index);
10649
10650                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10651                                 ins->dreg = cfg->locals [loc_index]->dreg;
10652                                 ins->flags |= ins_flag;
10653                                 ip += 5;
10654                                 ip += stloc_len;
10655                                 if (ins_flag & MONO_INST_VOLATILE) {
10656                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10657                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10658                                 }
10659                                 ins_flag = 0;
10660                                 break;
10661                         }
10662
10663                         /* Optimize the ldobj+stobj combination */
10664                         /* The reference case ends up being a load+store anyway */
10665                         /* Skip this if the operation is volatile. */
10666                         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)) {
10667                                 CHECK_STACK (1);
10668
10669                                 sp --;
10670
10671                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10672
10673                                 ip += 5 + 5;
10674                                 ins_flag = 0;
10675                                 break;
10676                         }
10677
10678                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10679                         ins->flags |= ins_flag;
10680                         *sp++ = ins;
10681
10682                         if (ins_flag & MONO_INST_VOLATILE) {
10683                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10684                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10685                         }
10686
10687                         ip += 5;
10688                         ins_flag = 0;
10689                         inline_costs += 1;
10690                         break;
10691                 }
10692                 case CEE_LDSTR:
10693                         CHECK_STACK_OVF (1);
10694                         CHECK_OPSIZE (5);
10695                         n = read32 (ip + 1);
10696
10697                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10698                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10699                                 ins->type = STACK_OBJ;
10700                                 *sp = ins;
10701                         }
10702                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10703                                 MonoInst *iargs [1];
10704                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10705
10706                                 if (cfg->compile_aot)
10707                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10708                                 else
10709                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10710                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10711                         } else {
10712                                 if (cfg->opt & MONO_OPT_SHARED) {
10713                                         MonoInst *iargs [3];
10714
10715                                         if (cfg->compile_aot) {
10716                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10717                                         }
10718                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10719                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10720                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10721                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10722                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10723                                         CHECK_CFG_ERROR;
10724                                 } else {
10725                                         if (cfg->cbb->out_of_line) {
10726                                                 MonoInst *iargs [2];
10727
10728                                                 if (image == mono_defaults.corlib) {
10729                                                         /*
10730                                                          * Avoid relocations in AOT and save some space by using a
10731                                                          * version of helper_ldstr specialized to mscorlib.
10732                                                          */
10733                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10734                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10735                                                 } else {
10736                                                         /* Avoid creating the string object */
10737                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10738                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10739                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10740                                                 }
10741                                         }
10742                                         else
10743                                         if (cfg->compile_aot) {
10744                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10745                                                 *sp = ins;
10746                                                 MONO_ADD_INS (cfg->cbb, ins);
10747                                         }
10748                                         else {
10749                                                 NEW_PCONST (cfg, ins, NULL);
10750                                                 ins->type = STACK_OBJ;
10751                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10752                                                 CHECK_CFG_ERROR;
10753
10754                                                 if (!ins->inst_p0)
10755                                                         OUT_OF_MEMORY_FAILURE;
10756
10757                                                 *sp = ins;
10758                                                 MONO_ADD_INS (cfg->cbb, ins);
10759                                         }
10760                                 }
10761                         }
10762
10763                         sp++;
10764                         ip += 5;
10765                         break;
10766                 case CEE_NEWOBJ: {
10767                         MonoInst *iargs [2];
10768                         MonoMethodSignature *fsig;
10769                         MonoInst this_ins;
10770                         MonoInst *alloc;
10771                         MonoInst *vtable_arg = NULL;
10772
10773                         CHECK_OPSIZE (5);
10774                         token = read32 (ip + 1);
10775                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10776                         CHECK_CFG_ERROR;
10777
10778                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10779                         CHECK_CFG_ERROR;
10780
10781                         mono_save_token_info (cfg, image, token, cmethod);
10782
10783                         if (!mono_class_init (cmethod->klass))
10784                                 TYPE_LOAD_ERROR (cmethod->klass);
10785
10786                         context_used = mini_method_check_context_used (cfg, cmethod);
10787
10788                         if (mono_security_core_clr_enabled ())
10789                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10790
10791                         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)) {
10792                                 emit_class_init (cfg, cmethod->klass);
10793                                 CHECK_TYPELOAD (cmethod->klass);
10794                         }
10795
10796                         /*
10797                         if (cfg->gsharedvt) {
10798                                 if (mini_is_gsharedvt_variable_signature (sig))
10799                                         GSHAREDVT_FAILURE (*ip);
10800                         }
10801                         */
10802
10803                         n = fsig->param_count;
10804                         CHECK_STACK (n);
10805
10806                         /*
10807                          * Generate smaller code for the common newobj <exception> instruction in
10808                          * argument checking code.
10809                          */
10810                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10811                                 is_exception_class (cmethod->klass) && n <= 2 &&
10812                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10813                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10814                                 MonoInst *iargs [3];
10815
10816                                 sp -= n;
10817
10818                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10819                                 switch (n) {
10820                                 case 0:
10821                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10822                                         break;
10823                                 case 1:
10824                                         iargs [1] = sp [0];
10825                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10826                                         break;
10827                                 case 2:
10828                                         iargs [1] = sp [0];
10829                                         iargs [2] = sp [1];
10830                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10831                                         break;
10832                                 default:
10833                                         g_assert_not_reached ();
10834                                 }
10835
10836                                 ip += 5;
10837                                 inline_costs += 5;
10838                                 break;
10839                         }
10840
10841                         /* move the args to allow room for 'this' in the first position */
10842                         while (n--) {
10843                                 --sp;
10844                                 sp [1] = sp [0];
10845                         }
10846
10847                         /* check_call_signature () requires sp[0] to be set */
10848                         this_ins.type = STACK_OBJ;
10849                         sp [0] = &this_ins;
10850                         if (check_call_signature (cfg, fsig, sp))
10851                                 UNVERIFIED;
10852
10853                         iargs [0] = NULL;
10854
10855                         if (mini_class_is_system_array (cmethod->klass)) {
10856                                 *sp = emit_get_rgctx_method (cfg, context_used,
10857                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10858
10859                                 /* Avoid varargs in the common case */
10860                                 if (fsig->param_count == 1)
10861                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10862                                 else if (fsig->param_count == 2)
10863                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10864                                 else if (fsig->param_count == 3)
10865                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10866                                 else if (fsig->param_count == 4)
10867                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10868                                 else
10869                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10870                         } else if (cmethod->string_ctor) {
10871                                 g_assert (!context_used);
10872                                 g_assert (!vtable_arg);
10873                                 /* we simply pass a null pointer */
10874                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10875                                 /* now call the string ctor */
10876                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10877                         } else {
10878                                 if (cmethod->klass->valuetype) {
10879                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10880                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10881                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10882
10883                                         alloc = NULL;
10884
10885                                         /*
10886                                          * The code generated by mini_emit_virtual_call () expects
10887                                          * iargs [0] to be a boxed instance, but luckily the vcall
10888                                          * will be transformed into a normal call there.
10889                                          */
10890                                 } else if (context_used) {
10891                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10892                                         *sp = alloc;
10893                                 } else {
10894                                         MonoVTable *vtable = NULL;
10895
10896                                         if (!cfg->compile_aot)
10897                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10898                                         CHECK_TYPELOAD (cmethod->klass);
10899
10900                                         /*
10901                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10902                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10903                                          * As a workaround, we call class cctors before allocating objects.
10904                                          */
10905                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10906                                                 emit_class_init (cfg, cmethod->klass);
10907                                                 if (cfg->verbose_level > 2)
10908                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10909                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10910                                         }
10911
10912                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10913                                         *sp = alloc;
10914                                 }
10915                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10916
10917                                 if (alloc)
10918                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10919
10920                                 /* Now call the actual ctor */
10921                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10922                                 CHECK_CFG_EXCEPTION;
10923                         }
10924
10925                         if (alloc == NULL) {
10926                                 /* Valuetype */
10927                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10928                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10929                                 *sp++= ins;
10930                         } else {
10931                                 *sp++ = alloc;
10932                         }
10933
10934                         ip += 5;
10935                         inline_costs += 5;
10936                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10937                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10938                         break;
10939                 }
10940                 case CEE_CASTCLASS:
10941                 case CEE_ISINST: {
10942                         CHECK_STACK (1);
10943                         --sp;
10944                         CHECK_OPSIZE (5);
10945                         token = read32 (ip + 1);
10946                         klass = mini_get_class (method, token, generic_context);
10947                         CHECK_TYPELOAD (klass);
10948                         if (sp [0]->type != STACK_OBJ)
10949                                 UNVERIFIED;
10950
10951                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10952                         ins->dreg = alloc_preg (cfg);
10953                         ins->sreg1 = (*sp)->dreg;
10954                         ins->klass = klass;
10955                         ins->type = STACK_OBJ;
10956                         MONO_ADD_INS (cfg->cbb, ins);
10957
10958                         CHECK_CFG_EXCEPTION;
10959                         *sp++ = ins;
10960                         ip += 5;
10961
10962                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10963                         break;
10964                 }
10965                 case CEE_UNBOX_ANY: {
10966                         MonoInst *res, *addr;
10967
10968                         CHECK_STACK (1);
10969                         --sp;
10970                         CHECK_OPSIZE (5);
10971                         token = read32 (ip + 1);
10972                         klass = mini_get_class (method, token, generic_context);
10973                         CHECK_TYPELOAD (klass);
10974
10975                         mono_save_token_info (cfg, image, token, klass);
10976
10977                         context_used = mini_class_check_context_used (cfg, klass);
10978
10979                         if (mini_is_gsharedvt_klass (klass)) {
10980                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10981                                 inline_costs += 2;
10982                         } else if (generic_class_is_reference_type (cfg, klass)) {
10983                                 MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10984                                 res->dreg = alloc_preg (cfg);
10985                                 res->sreg1 = (*sp)->dreg;
10986                                 res->klass = klass;
10987                                 res->type = STACK_OBJ;
10988                                 MONO_ADD_INS (cfg->cbb, res);
10989                                 cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10990                         } else if (mono_class_is_nullable (klass)) {
10991                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10992                         } else {
10993                                 addr = handle_unbox (cfg, klass, sp, context_used);
10994                                 /* LDOBJ */
10995                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10996                                 res = ins;
10997                                 inline_costs += 2;
10998                         }
10999
11000                         *sp ++ = res;
11001                         ip += 5;
11002                         break;
11003                 }
11004                 case CEE_BOX: {
11005                         MonoInst *val;
11006                         MonoClass *enum_class;
11007                         MonoMethod *has_flag;
11008
11009                         CHECK_STACK (1);
11010                         --sp;
11011                         val = *sp;
11012                         CHECK_OPSIZE (5);
11013                         token = read32 (ip + 1);
11014                         klass = mini_get_class (method, token, generic_context);
11015                         CHECK_TYPELOAD (klass);
11016
11017                         mono_save_token_info (cfg, image, token, klass);
11018
11019                         context_used = mini_class_check_context_used (cfg, klass);
11020
11021                         if (generic_class_is_reference_type (cfg, klass)) {
11022                                 *sp++ = val;
11023                                 ip += 5;
11024                                 break;
11025                         }
11026
11027                         if (klass == mono_defaults.void_class)
11028                                 UNVERIFIED;
11029                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11030                                 UNVERIFIED;
11031                         /* frequent check in generic code: box (struct), brtrue */
11032
11033                         /*
11034                          * Look for:
11035                          *
11036                          *   <push int/long ptr>
11037                          *   <push int/long>
11038                          *   box MyFlags
11039                          *   constrained. MyFlags
11040                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11041                          *
11042                          * If we find this sequence and the operand types on box and constrained
11043                          * are equal, we can emit a specialized instruction sequence instead of
11044                          * the very slow HasFlag () call.
11045                          */
11046                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11047                             /* Cheap checks first. */
11048                             ip + 5 + 6 + 5 < end &&
11049                             ip [5] == CEE_PREFIX1 &&
11050                             ip [6] == CEE_CONSTRAINED_ &&
11051                             ip [11] == CEE_CALLVIRT &&
11052                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11053                             mono_class_is_enum (klass) &&
11054                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11055                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11056                             has_flag->klass == mono_defaults.enum_class &&
11057                             !strcmp (has_flag->name, "HasFlag") &&
11058                             has_flag->signature->hasthis &&
11059                             has_flag->signature->param_count == 1) {
11060                                 CHECK_TYPELOAD (enum_class);
11061
11062                                 if (enum_class == klass) {
11063                                         MonoInst *enum_this, *enum_flag;
11064
11065                                         ip += 5 + 6 + 5;
11066                                         --sp;
11067
11068                                         enum_this = sp [0];
11069                                         enum_flag = sp [1];
11070
11071                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11072                                         break;
11073                                 }
11074                         }
11075
11076                         // FIXME: LLVM can't handle the inconsistent bb linking
11077                         if (!mono_class_is_nullable (klass) &&
11078                                 !mini_is_gsharedvt_klass (klass) &&
11079                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11080                                 (ip [5] == CEE_BRTRUE ||
11081                                  ip [5] == CEE_BRTRUE_S ||
11082                                  ip [5] == CEE_BRFALSE ||
11083                                  ip [5] == CEE_BRFALSE_S)) {
11084                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11085                                 int dreg;
11086                                 MonoBasicBlock *true_bb, *false_bb;
11087
11088                                 ip += 5;
11089
11090                                 if (cfg->verbose_level > 3) {
11091                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11092                                         printf ("<box+brtrue opt>\n");
11093                                 }
11094
11095                                 switch (*ip) {
11096                                 case CEE_BRTRUE_S:
11097                                 case CEE_BRFALSE_S:
11098                                         CHECK_OPSIZE (2);
11099                                         ip++;
11100                                         target = ip + 1 + (signed char)(*ip);
11101                                         ip++;
11102                                         break;
11103                                 case CEE_BRTRUE:
11104                                 case CEE_BRFALSE:
11105                                         CHECK_OPSIZE (5);
11106                                         ip++;
11107                                         target = ip + 4 + (gint)(read32 (ip));
11108                                         ip += 4;
11109                                         break;
11110                                 default:
11111                                         g_assert_not_reached ();
11112                                 }
11113
11114                                 /*
11115                                  * We need to link both bblocks, since it is needed for handling stack
11116                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11117                                  * Branching to only one of them would lead to inconsistencies, so
11118                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11119                                  */
11120                                 GET_BBLOCK (cfg, true_bb, target);
11121                                 GET_BBLOCK (cfg, false_bb, ip);
11122
11123                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11124                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11125
11126                                 if (sp != stack_start) {
11127                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11128                                         sp = stack_start;
11129                                         CHECK_UNVERIFIABLE (cfg);
11130                                 }
11131
11132                                 if (COMPILE_LLVM (cfg)) {
11133                                         dreg = alloc_ireg (cfg);
11134                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11135                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11136
11137                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11138                                 } else {
11139                                         /* The JIT can't eliminate the iconst+compare */
11140                                         MONO_INST_NEW (cfg, ins, OP_BR);
11141                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11142                                         MONO_ADD_INS (cfg->cbb, ins);
11143                                 }
11144
11145                                 start_new_bblock = 1;
11146                                 break;
11147                         }
11148
11149                         *sp++ = handle_box (cfg, val, klass, context_used);
11150
11151                         CHECK_CFG_EXCEPTION;
11152                         ip += 5;
11153                         inline_costs += 1;
11154                         break;
11155                 }
11156                 case CEE_UNBOX: {
11157                         CHECK_STACK (1);
11158                         --sp;
11159                         CHECK_OPSIZE (5);
11160                         token = read32 (ip + 1);
11161                         klass = mini_get_class (method, token, generic_context);
11162                         CHECK_TYPELOAD (klass);
11163
11164                         mono_save_token_info (cfg, image, token, klass);
11165
11166                         context_used = mini_class_check_context_used (cfg, klass);
11167
11168                         if (mono_class_is_nullable (klass)) {
11169                                 MonoInst *val;
11170
11171                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11172                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11173
11174                                 *sp++= ins;
11175                         } else {
11176                                 ins = handle_unbox (cfg, klass, sp, context_used);
11177                                 *sp++ = ins;
11178                         }
11179                         ip += 5;
11180                         inline_costs += 2;
11181                         break;
11182                 }
11183                 case CEE_LDFLD:
11184                 case CEE_LDFLDA:
11185                 case CEE_STFLD:
11186                 case CEE_LDSFLD:
11187                 case CEE_LDSFLDA:
11188                 case CEE_STSFLD: {
11189                         MonoClassField *field;
11190 #ifndef DISABLE_REMOTING
11191                         int costs;
11192 #endif
11193                         guint foffset;
11194                         gboolean is_instance;
11195                         int op;
11196                         gpointer addr = NULL;
11197                         gboolean is_special_static;
11198                         MonoType *ftype;
11199                         MonoInst *store_val = NULL;
11200                         MonoInst *thread_ins;
11201
11202                         op = *ip;
11203                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11204                         if (is_instance) {
11205                                 if (op == CEE_STFLD) {
11206                                         CHECK_STACK (2);
11207                                         sp -= 2;
11208                                         store_val = sp [1];
11209                                 } else {
11210                                         CHECK_STACK (1);
11211                                         --sp;
11212                                 }
11213                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11214                                         UNVERIFIED;
11215                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11216                                         UNVERIFIED;
11217                         } else {
11218                                 if (op == CEE_STSFLD) {
11219                                         CHECK_STACK (1);
11220                                         sp--;
11221                                         store_val = sp [0];
11222                                 }
11223                         }
11224
11225                         CHECK_OPSIZE (5);
11226                         token = read32 (ip + 1);
11227                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11228                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11229                                 klass = field->parent;
11230                         }
11231                         else {
11232                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11233                                 CHECK_CFG_ERROR;
11234                         }
11235                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11236                                 FIELD_ACCESS_FAILURE (method, field);
11237                         mono_class_init (klass);
11238
11239                         /* if the class is Critical then transparent code cannot access it's fields */
11240                         if (!is_instance && mono_security_core_clr_enabled ())
11241                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11242
11243                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11244                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11245                         if (mono_security_core_clr_enabled ())
11246                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11247                         */
11248
11249                         ftype = mono_field_get_type (field);
11250
11251                         /*
11252                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11253                          * the static case.
11254                          */
11255                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11256                                 switch (op) {
11257                                 case CEE_LDFLD:
11258                                         op = CEE_LDSFLD;
11259                                         break;
11260                                 case CEE_STFLD:
11261                                         op = CEE_STSFLD;
11262                                         break;
11263                                 case CEE_LDFLDA:
11264                                         op = CEE_LDSFLDA;
11265                                         break;
11266                                 default:
11267                                         g_assert_not_reached ();
11268                                 }
11269                                 is_instance = FALSE;
11270                         }
11271
11272                         context_used = mini_class_check_context_used (cfg, klass);
11273
11274                         /* INSTANCE CASE */
11275
11276                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11277                         if (op == CEE_STFLD) {
11278                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11279                                         UNVERIFIED;
11280 #ifndef DISABLE_REMOTING
11281                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11282                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11283                                         MonoInst *iargs [5];
11284
11285                                         GSHAREDVT_FAILURE (op);
11286
11287                                         iargs [0] = sp [0];
11288                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11289                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11290                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11291                                                     field->offset);
11292                                         iargs [4] = sp [1];
11293
11294                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11295                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11296                                                                                            iargs, ip, cfg->real_offset, TRUE);
11297                                                 CHECK_CFG_EXCEPTION;
11298                                                 g_assert (costs > 0);
11299
11300                                                 cfg->real_offset += 5;
11301
11302                                                 inline_costs += costs;
11303                                         } else {
11304                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11305                                         }
11306                                 } else
11307 #endif
11308                                 {
11309                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11310
11311                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11312
11313                                         if (mini_is_gsharedvt_klass (klass)) {
11314                                                 MonoInst *offset_ins;
11315
11316                                                 context_used = mini_class_check_context_used (cfg, klass);
11317
11318                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11319                                                 /* The value is offset by 1 */
11320                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11321                                                 dreg = alloc_ireg_mp (cfg);
11322                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11323                                                 wbarrier_ptr_ins = ins;
11324                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11325                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11326                                         } else {
11327                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11328                                         }
11329                                         if (sp [0]->opcode != OP_LDADDR)
11330                                                 store->flags |= MONO_INST_FAULT;
11331
11332                                         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)) {
11333                                                 if (mini_is_gsharedvt_klass (klass)) {
11334                                                         g_assert (wbarrier_ptr_ins);
11335                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11336                                                 } else {
11337                                                         /* insert call to write barrier */
11338                                                         MonoInst *ptr;
11339                                                         int dreg;
11340
11341                                                         dreg = alloc_ireg_mp (cfg);
11342                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11343                                                         emit_write_barrier (cfg, ptr, sp [1]);
11344                                                 }
11345                                         }
11346
11347                                         store->flags |= ins_flag;
11348                                 }
11349                                 ins_flag = 0;
11350                                 ip += 5;
11351                                 break;
11352                         }
11353
11354 #ifndef DISABLE_REMOTING
11355                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11356                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11357                                 MonoInst *iargs [4];
11358
11359                                 GSHAREDVT_FAILURE (op);
11360
11361                                 iargs [0] = sp [0];
11362                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11363                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11364                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11365                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11366                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11367                                                                                    iargs, ip, cfg->real_offset, TRUE);
11368                                         CHECK_CFG_EXCEPTION;
11369                                         g_assert (costs > 0);
11370
11371                                         cfg->real_offset += 5;
11372
11373                                         *sp++ = iargs [0];
11374
11375                                         inline_costs += costs;
11376                                 } else {
11377                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11378                                         *sp++ = ins;
11379                                 }
11380                         } else
11381 #endif
11382                         if (is_instance) {
11383                                 if (sp [0]->type == STACK_VTYPE) {
11384                                         MonoInst *var;
11385
11386                                         /* Have to compute the address of the variable */
11387
11388                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11389                                         if (!var)
11390                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11391                                         else
11392                                                 g_assert (var->klass == klass);
11393
11394                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11395                                         sp [0] = ins;
11396                                 }
11397
11398                                 if (op == CEE_LDFLDA) {
11399                                         if (sp [0]->type == STACK_OBJ) {
11400                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11401                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11402                                         }
11403
11404                                         dreg = alloc_ireg_mp (cfg);
11405
11406                                         if (mini_is_gsharedvt_klass (klass)) {
11407                                                 MonoInst *offset_ins;
11408
11409                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11410                                                 /* The value is offset by 1 */
11411                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11412                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11413                                         } else {
11414                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11415                                         }
11416                                         ins->klass = mono_class_from_mono_type (field->type);
11417                                         ins->type = STACK_MP;
11418                                         *sp++ = ins;
11419                                 } else {
11420                                         MonoInst *load;
11421
11422                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11423
11424                                         if (mini_is_gsharedvt_klass (klass)) {
11425                                                 MonoInst *offset_ins;
11426
11427                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11428                                                 /* The value is offset by 1 */
11429                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11430                                                 dreg = alloc_ireg_mp (cfg);
11431                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11432                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11433                                         } else {
11434                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11435                                         }
11436                                         load->flags |= ins_flag;
11437                                         if (sp [0]->opcode != OP_LDADDR)
11438                                                 load->flags |= MONO_INST_FAULT;
11439                                         *sp++ = load;
11440                                 }
11441                         }
11442
11443                         if (is_instance) {
11444                                 ins_flag = 0;
11445                                 ip += 5;
11446                                 break;
11447                         }
11448
11449                         /* STATIC CASE */
11450                         context_used = mini_class_check_context_used (cfg, klass);
11451
11452                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11453                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11454                                 CHECK_CFG_ERROR;
11455                         }
11456
11457                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11458                          * to be called here.
11459                          */
11460                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11461                                 mono_class_vtable (cfg->domain, klass);
11462                                 CHECK_TYPELOAD (klass);
11463                         }
11464                         mono_domain_lock (cfg->domain);
11465                         if (cfg->domain->special_static_fields)
11466                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11467                         mono_domain_unlock (cfg->domain);
11468
11469                         is_special_static = mono_class_field_is_special_static (field);
11470
11471                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11472                                 thread_ins = mono_get_thread_intrinsic (cfg);
11473                         else
11474                                 thread_ins = NULL;
11475
11476                         /* Generate IR to compute the field address */
11477                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11478                                 /*
11479                                  * Fast access to TLS data
11480                                  * Inline version of get_thread_static_data () in
11481                                  * threads.c.
11482                                  */
11483                                 guint32 offset;
11484                                 int idx, static_data_reg, array_reg, dreg;
11485
11486                                 GSHAREDVT_FAILURE (op);
11487
11488                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11489                                 static_data_reg = alloc_ireg (cfg);
11490                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11491
11492                                 if (cfg->compile_aot) {
11493                                         int offset_reg, offset2_reg, idx_reg;
11494
11495                                         /* For TLS variables, this will return the TLS offset */
11496                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11497                                         offset_reg = ins->dreg;
11498                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11499                                         idx_reg = alloc_ireg (cfg);
11500                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11501                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11502                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11503                                         array_reg = alloc_ireg (cfg);
11504                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11505                                         offset2_reg = alloc_ireg (cfg);
11506                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11507                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11508                                         dreg = alloc_ireg (cfg);
11509                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11510                                 } else {
11511                                         offset = (gsize)addr & 0x7fffffff;
11512                                         idx = offset & 0x3f;
11513
11514                                         array_reg = alloc_ireg (cfg);
11515                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11516                                         dreg = alloc_ireg (cfg);
11517                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11518                                 }
11519                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11520                                         (cfg->compile_aot && is_special_static) ||
11521                                         (context_used && is_special_static)) {
11522                                 MonoInst *iargs [2];
11523
11524                                 g_assert (field->parent);
11525                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11526                                 if (context_used) {
11527                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11528                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11529                                 } else {
11530                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11531                                 }
11532                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11533                         } else if (context_used) {
11534                                 MonoInst *static_data;
11535
11536                                 /*
11537                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11538                                         method->klass->name_space, method->klass->name, method->name,
11539                                         depth, field->offset);
11540                                 */
11541
11542                                 if (mono_class_needs_cctor_run (klass, method))
11543                                         emit_class_init (cfg, klass);
11544
11545                                 /*
11546                                  * The pointer we're computing here is
11547                                  *
11548                                  *   super_info.static_data + field->offset
11549                                  */
11550                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11551                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11552
11553                                 if (mini_is_gsharedvt_klass (klass)) {
11554                                         MonoInst *offset_ins;
11555
11556                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11557                                         /* The value is offset by 1 */
11558                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11559                                         dreg = alloc_ireg_mp (cfg);
11560                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11561                                 } else if (field->offset == 0) {
11562                                         ins = static_data;
11563                                 } else {
11564                                         int addr_reg = mono_alloc_preg (cfg);
11565                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11566                                 }
11567                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11568                                 MonoInst *iargs [2];
11569
11570                                 g_assert (field->parent);
11571                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11572                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11573                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11574                         } else {
11575                                 MonoVTable *vtable = NULL;
11576
11577                                 if (!cfg->compile_aot)
11578                                         vtable = mono_class_vtable (cfg->domain, klass);
11579                                 CHECK_TYPELOAD (klass);
11580
11581                                 if (!addr) {
11582                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11583                                                 if (!(g_slist_find (class_inits, klass))) {
11584                                                         emit_class_init (cfg, klass);
11585                                                         if (cfg->verbose_level > 2)
11586                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11587                                                         class_inits = g_slist_prepend (class_inits, klass);
11588                                                 }
11589                                         } else {
11590                                                 if (cfg->run_cctors) {
11591                                                         /* This makes so that inline cannot trigger */
11592                                                         /* .cctors: too many apps depend on them */
11593                                                         /* running with a specific order... */
11594                                                         g_assert (vtable);
11595                                                         if (! vtable->initialized)
11596                                                                 INLINE_FAILURE ("class init");
11597                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11598                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11599                                                                 goto exception_exit;
11600                                                         }
11601                                                 }
11602                                         }
11603                                         if (cfg->compile_aot)
11604                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11605                                         else {
11606                                                 g_assert (vtable);
11607                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11608                                                 g_assert (addr);
11609                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11610                                         }
11611                                 } else {
11612                                         MonoInst *iargs [1];
11613                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11614                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11615                                 }
11616                         }
11617
11618                         /* Generate IR to do the actual load/store operation */
11619
11620                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11621                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11622                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11623                         }
11624
11625                         if (op == CEE_LDSFLDA) {
11626                                 ins->klass = mono_class_from_mono_type (ftype);
11627                                 ins->type = STACK_PTR;
11628                                 *sp++ = ins;
11629                         } else if (op == CEE_STSFLD) {
11630                                 MonoInst *store;
11631
11632                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11633                                 store->flags |= ins_flag;
11634                         } else {
11635                                 gboolean is_const = FALSE;
11636                                 MonoVTable *vtable = NULL;
11637                                 gpointer addr = NULL;
11638
11639                                 if (!context_used) {
11640                                         vtable = mono_class_vtable (cfg->domain, klass);
11641                                         CHECK_TYPELOAD (klass);
11642                                 }
11643                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11644                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11645                                         int ro_type = ftype->type;
11646                                         if (!addr)
11647                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11648                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11649                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11650                                         }
11651
11652                                         GSHAREDVT_FAILURE (op);
11653
11654                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11655                                         is_const = TRUE;
11656                                         switch (ro_type) {
11657                                         case MONO_TYPE_BOOLEAN:
11658                                         case MONO_TYPE_U1:
11659                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11660                                                 sp++;
11661                                                 break;
11662                                         case MONO_TYPE_I1:
11663                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11664                                                 sp++;
11665                                                 break;
11666                                         case MONO_TYPE_CHAR:
11667                                         case MONO_TYPE_U2:
11668                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11669                                                 sp++;
11670                                                 break;
11671                                         case MONO_TYPE_I2:
11672                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11673                                                 sp++;
11674                                                 break;
11675                                                 break;
11676                                         case MONO_TYPE_I4:
11677                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11678                                                 sp++;
11679                                                 break;
11680                                         case MONO_TYPE_U4:
11681                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11682                                                 sp++;
11683                                                 break;
11684                                         case MONO_TYPE_I:
11685                                         case MONO_TYPE_U:
11686                                         case MONO_TYPE_PTR:
11687                                         case MONO_TYPE_FNPTR:
11688                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11689                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11690                                                 sp++;
11691                                                 break;
11692                                         case MONO_TYPE_STRING:
11693                                         case MONO_TYPE_OBJECT:
11694                                         case MONO_TYPE_CLASS:
11695                                         case MONO_TYPE_SZARRAY:
11696                                         case MONO_TYPE_ARRAY:
11697                                                 if (!mono_gc_is_moving ()) {
11698                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11699                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11700                                                         sp++;
11701                                                 } else {
11702                                                         is_const = FALSE;
11703                                                 }
11704                                                 break;
11705                                         case MONO_TYPE_I8:
11706                                         case MONO_TYPE_U8:
11707                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11708                                                 sp++;
11709                                                 break;
11710                                         case MONO_TYPE_R4:
11711                                         case MONO_TYPE_R8:
11712                                         case MONO_TYPE_VALUETYPE:
11713                                         default:
11714                                                 is_const = FALSE;
11715                                                 break;
11716                                         }
11717                                 }
11718
11719                                 if (!is_const) {
11720                                         MonoInst *load;
11721
11722                                         CHECK_STACK_OVF (1);
11723
11724                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11725                                         load->flags |= ins_flag;
11726                                         ins_flag = 0;
11727                                         *sp++ = load;
11728                                 }
11729                         }
11730
11731                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11732                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11733                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11734                         }
11735
11736                         ins_flag = 0;
11737                         ip += 5;
11738                         break;
11739                 }
11740                 case CEE_STOBJ:
11741                         CHECK_STACK (2);
11742                         sp -= 2;
11743                         CHECK_OPSIZE (5);
11744                         token = read32 (ip + 1);
11745                         klass = mini_get_class (method, token, generic_context);
11746                         CHECK_TYPELOAD (klass);
11747                         if (ins_flag & MONO_INST_VOLATILE) {
11748                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11749                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11750                         }
11751                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11752                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11753                         ins->flags |= ins_flag;
11754                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11755                                         generic_class_is_reference_type (cfg, klass)) {
11756                                 /* insert call to write barrier */
11757                                 emit_write_barrier (cfg, sp [0], sp [1]);
11758                         }
11759                         ins_flag = 0;
11760                         ip += 5;
11761                         inline_costs += 1;
11762                         break;
11763
11764                         /*
11765                          * Array opcodes
11766                          */
11767                 case CEE_NEWARR: {
11768                         MonoInst *len_ins;
11769                         const char *data_ptr;
11770                         int data_size = 0;
11771                         guint32 field_token;
11772
11773                         CHECK_STACK (1);
11774                         --sp;
11775
11776                         CHECK_OPSIZE (5);
11777                         token = read32 (ip + 1);
11778
11779                         klass = mini_get_class (method, token, generic_context);
11780                         CHECK_TYPELOAD (klass);
11781
11782                         context_used = mini_class_check_context_used (cfg, klass);
11783
11784                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11785                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11786                                 ins->sreg1 = sp [0]->dreg;
11787                                 ins->type = STACK_I4;
11788                                 ins->dreg = alloc_ireg (cfg);
11789                                 MONO_ADD_INS (cfg->cbb, ins);
11790                                 *sp = mono_decompose_opcode (cfg, ins);
11791                         }
11792
11793                         if (context_used) {
11794                                 MonoInst *args [3];
11795                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11796                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11797
11798                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11799
11800                                 /* vtable */
11801                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11802                                         array_class, MONO_RGCTX_INFO_VTABLE);
11803                                 /* array len */
11804                                 args [1] = sp [0];
11805
11806                                 if (managed_alloc)
11807                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11808                                 else
11809                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11810                         } else {
11811                                 if (cfg->opt & MONO_OPT_SHARED) {
11812                                         /* Decompose now to avoid problems with references to the domainvar */
11813                                         MonoInst *iargs [3];
11814
11815                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11816                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11817                                         iargs [2] = sp [0];
11818
11819                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11820                                 } else {
11821                                         /* Decompose later since it is needed by abcrem */
11822                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11823                                         mono_class_vtable (cfg->domain, array_type);
11824                                         CHECK_TYPELOAD (array_type);
11825
11826                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11827                                         ins->dreg = alloc_ireg_ref (cfg);
11828                                         ins->sreg1 = sp [0]->dreg;
11829                                         ins->inst_newa_class = klass;
11830                                         ins->type = STACK_OBJ;
11831                                         ins->klass = array_type;
11832                                         MONO_ADD_INS (cfg->cbb, ins);
11833                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11834                                         cfg->cbb->has_array_access = TRUE;
11835
11836                                         /* Needed so mono_emit_load_get_addr () gets called */
11837                                         mono_get_got_var (cfg);
11838                                 }
11839                         }
11840
11841                         len_ins = sp [0];
11842                         ip += 5;
11843                         *sp++ = ins;
11844                         inline_costs += 1;
11845
11846                         /*
11847                          * we inline/optimize the initialization sequence if possible.
11848                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11849                          * for small sizes open code the memcpy
11850                          * ensure the rva field is big enough
11851                          */
11852                         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))) {
11853                                 MonoMethod *memcpy_method = get_memcpy_method ();
11854                                 MonoInst *iargs [3];
11855                                 int add_reg = alloc_ireg_mp (cfg);
11856
11857                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11858                                 if (cfg->compile_aot) {
11859                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11860                                 } else {
11861                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11862                                 }
11863                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11864                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11865                                 ip += 11;
11866                         }
11867
11868                         break;
11869                 }
11870                 case CEE_LDLEN:
11871                         CHECK_STACK (1);
11872                         --sp;
11873                         if (sp [0]->type != STACK_OBJ)
11874                                 UNVERIFIED;
11875
11876                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11877                         ins->dreg = alloc_preg (cfg);
11878                         ins->sreg1 = sp [0]->dreg;
11879                         ins->type = STACK_I4;
11880                         /* This flag will be inherited by the decomposition */
11881                         ins->flags |= MONO_INST_FAULT;
11882                         MONO_ADD_INS (cfg->cbb, ins);
11883                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11884                         cfg->cbb->has_array_access = TRUE;
11885                         ip ++;
11886                         *sp++ = ins;
11887                         break;
11888                 case CEE_LDELEMA:
11889                         CHECK_STACK (2);
11890                         sp -= 2;
11891                         CHECK_OPSIZE (5);
11892                         if (sp [0]->type != STACK_OBJ)
11893                                 UNVERIFIED;
11894
11895                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11896
11897                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11898                         CHECK_TYPELOAD (klass);
11899                         /* we need to make sure that this array is exactly the type it needs
11900                          * to be for correctness. the wrappers are lax with their usage
11901                          * so we need to ignore them here
11902                          */
11903                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11904                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11905                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11906                                 CHECK_TYPELOAD (array_class);
11907                         }
11908
11909                         readonly = FALSE;
11910                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11911                         *sp++ = ins;
11912                         ip += 5;
11913                         break;
11914                 case CEE_LDELEM:
11915                 case CEE_LDELEM_I1:
11916                 case CEE_LDELEM_U1:
11917                 case CEE_LDELEM_I2:
11918                 case CEE_LDELEM_U2:
11919                 case CEE_LDELEM_I4:
11920                 case CEE_LDELEM_U4:
11921                 case CEE_LDELEM_I8:
11922                 case CEE_LDELEM_I:
11923                 case CEE_LDELEM_R4:
11924                 case CEE_LDELEM_R8:
11925                 case CEE_LDELEM_REF: {
11926                         MonoInst *addr;
11927
11928                         CHECK_STACK (2);
11929                         sp -= 2;
11930
11931                         if (*ip == CEE_LDELEM) {
11932                                 CHECK_OPSIZE (5);
11933                                 token = read32 (ip + 1);
11934                                 klass = mini_get_class (method, token, generic_context);
11935                                 CHECK_TYPELOAD (klass);
11936                                 mono_class_init (klass);
11937                         }
11938                         else
11939                                 klass = array_access_to_klass (*ip);
11940
11941                         if (sp [0]->type != STACK_OBJ)
11942                                 UNVERIFIED;
11943
11944                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11945
11946                         if (mini_is_gsharedvt_variable_klass (klass)) {
11947                                 // FIXME-VT: OP_ICONST optimization
11948                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11949                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11950                                 ins->opcode = OP_LOADV_MEMBASE;
11951                         } else if (sp [1]->opcode == OP_ICONST) {
11952                                 int array_reg = sp [0]->dreg;
11953                                 int index_reg = sp [1]->dreg;
11954                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11955
11956                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11957                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11958
11959                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11960                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11961                         } else {
11962                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11963                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11964                         }
11965                         *sp++ = ins;
11966                         if (*ip == CEE_LDELEM)
11967                                 ip += 5;
11968                         else
11969                                 ++ip;
11970                         break;
11971                 }
11972                 case CEE_STELEM_I:
11973                 case CEE_STELEM_I1:
11974                 case CEE_STELEM_I2:
11975                 case CEE_STELEM_I4:
11976                 case CEE_STELEM_I8:
11977                 case CEE_STELEM_R4:
11978                 case CEE_STELEM_R8:
11979                 case CEE_STELEM_REF:
11980                 case CEE_STELEM: {
11981                         CHECK_STACK (3);
11982                         sp -= 3;
11983
11984                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11985
11986                         if (*ip == CEE_STELEM) {
11987                                 CHECK_OPSIZE (5);
11988                                 token = read32 (ip + 1);
11989                                 klass = mini_get_class (method, token, generic_context);
11990                                 CHECK_TYPELOAD (klass);
11991                                 mono_class_init (klass);
11992                         }
11993                         else
11994                                 klass = array_access_to_klass (*ip);
11995
11996                         if (sp [0]->type != STACK_OBJ)
11997                                 UNVERIFIED;
11998
11999                         emit_array_store (cfg, klass, sp, TRUE);
12000
12001                         if (*ip == CEE_STELEM)
12002                                 ip += 5;
12003                         else
12004                                 ++ip;
12005                         inline_costs += 1;
12006                         break;
12007                 }
12008                 case CEE_CKFINITE: {
12009                         CHECK_STACK (1);
12010                         --sp;
12011
12012                         if (cfg->llvm_only) {
12013                                 MonoInst *iargs [1];
12014
12015                                 iargs [0] = sp [0];
12016                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12017                         } else  {
12018                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12019                                 ins->sreg1 = sp [0]->dreg;
12020                                 ins->dreg = alloc_freg (cfg);
12021                                 ins->type = STACK_R8;
12022                                 MONO_ADD_INS (cfg->cbb, ins);
12023
12024                                 *sp++ = mono_decompose_opcode (cfg, ins);
12025                         }
12026
12027                         ++ip;
12028                         break;
12029                 }
12030                 case CEE_REFANYVAL: {
12031                         MonoInst *src_var, *src;
12032
12033                         int klass_reg = alloc_preg (cfg);
12034                         int dreg = alloc_preg (cfg);
12035
12036                         GSHAREDVT_FAILURE (*ip);
12037
12038                         CHECK_STACK (1);
12039                         MONO_INST_NEW (cfg, ins, *ip);
12040                         --sp;
12041                         CHECK_OPSIZE (5);
12042                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12043                         CHECK_TYPELOAD (klass);
12044
12045                         context_used = mini_class_check_context_used (cfg, klass);
12046
12047                         // FIXME:
12048                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12049                         if (!src_var)
12050                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12051                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12052                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12053
12054                         if (context_used) {
12055                                 MonoInst *klass_ins;
12056
12057                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12058                                                 klass, MONO_RGCTX_INFO_KLASS);
12059
12060                                 // FIXME:
12061                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12062                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12063                         } else {
12064                                 mini_emit_class_check (cfg, klass_reg, klass);
12065                         }
12066                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12067                         ins->type = STACK_MP;
12068                         ins->klass = klass;
12069                         *sp++ = ins;
12070                         ip += 5;
12071                         break;
12072                 }
12073                 case CEE_MKREFANY: {
12074                         MonoInst *loc, *addr;
12075
12076                         GSHAREDVT_FAILURE (*ip);
12077
12078                         CHECK_STACK (1);
12079                         MONO_INST_NEW (cfg, ins, *ip);
12080                         --sp;
12081                         CHECK_OPSIZE (5);
12082                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12083                         CHECK_TYPELOAD (klass);
12084
12085                         context_used = mini_class_check_context_used (cfg, klass);
12086
12087                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12088                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12089
12090                         if (context_used) {
12091                                 MonoInst *const_ins;
12092                                 int type_reg = alloc_preg (cfg);
12093
12094                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12095                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12096                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12097                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12098                         } else if (cfg->compile_aot) {
12099                                 int const_reg = alloc_preg (cfg);
12100                                 int type_reg = alloc_preg (cfg);
12101
12102                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12103                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12104                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12105                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12106                         } else {
12107                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12108                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12109                         }
12110                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12111
12112                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12113                         ins->type = STACK_VTYPE;
12114                         ins->klass = mono_defaults.typed_reference_class;
12115                         *sp++ = ins;
12116                         ip += 5;
12117                         break;
12118                 }
12119                 case CEE_LDTOKEN: {
12120                         gpointer handle;
12121                         MonoClass *handle_class;
12122
12123                         CHECK_STACK_OVF (1);
12124
12125                         CHECK_OPSIZE (5);
12126                         n = read32 (ip + 1);
12127
12128                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12129                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12130                                 handle = mono_method_get_wrapper_data (method, n);
12131                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12132                                 if (handle_class == mono_defaults.typehandle_class)
12133                                         handle = &((MonoClass*)handle)->byval_arg;
12134                         }
12135                         else {
12136                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12137                                 CHECK_CFG_ERROR;
12138                         }
12139                         if (!handle)
12140                                 LOAD_ERROR;
12141                         mono_class_init (handle_class);
12142                         if (cfg->gshared) {
12143                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12144                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12145                                         /* This case handles ldtoken
12146                                            of an open type, like for
12147                                            typeof(Gen<>). */
12148                                         context_used = 0;
12149                                 } else if (handle_class == mono_defaults.typehandle_class) {
12150                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12151                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12152                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12153                                 else if (handle_class == mono_defaults.methodhandle_class)
12154                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12155                                 else
12156                                         g_assert_not_reached ();
12157                         }
12158
12159                         if ((cfg->opt & MONO_OPT_SHARED) &&
12160                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12161                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12162                                 MonoInst *addr, *vtvar, *iargs [3];
12163                                 int method_context_used;
12164
12165                                 method_context_used = mini_method_check_context_used (cfg, method);
12166
12167                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12168
12169                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12170                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12171                                 if (method_context_used) {
12172                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12173                                                 method, MONO_RGCTX_INFO_METHOD);
12174                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12175                                 } else {
12176                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12177                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12178                                 }
12179                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12180
12181                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12182
12183                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12184                         } else {
12185                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12186                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12187                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12188                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12189                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12190                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12191
12192                                         mono_class_init (tclass);
12193                                         if (context_used) {
12194                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12195                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12196                                         } else if (cfg->compile_aot) {
12197                                                 if (method->wrapper_type) {
12198                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12199                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12200                                                                 /* Special case for static synchronized wrappers */
12201                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12202                                                         } else {
12203                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12204                                                                 /* FIXME: n is not a normal token */
12205                                                                 DISABLE_AOT (cfg);
12206                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12207                                                         }
12208                                                 } else {
12209                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12210                                                 }
12211                                         } else {
12212                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12213                                                 CHECK_CFG_ERROR;
12214                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12215                                         }
12216                                         ins->type = STACK_OBJ;
12217                                         ins->klass = cmethod->klass;
12218                                         ip += 5;
12219                                 } else {
12220                                         MonoInst *addr, *vtvar;
12221
12222                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12223
12224                                         if (context_used) {
12225                                                 if (handle_class == mono_defaults.typehandle_class) {
12226                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12227                                                                         mono_class_from_mono_type ((MonoType *)handle),
12228                                                                         MONO_RGCTX_INFO_TYPE);
12229                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12230                                                         ins = emit_get_rgctx_method (cfg, context_used,
12231                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12232                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12233                                                         ins = emit_get_rgctx_field (cfg, context_used,
12234                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12235                                                 } else {
12236                                                         g_assert_not_reached ();
12237                                                 }
12238                                         } else if (cfg->compile_aot) {
12239                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12240                                         } else {
12241                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12242                                         }
12243                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12244                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12245                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12246                                 }
12247                         }
12248
12249                         *sp++ = ins;
12250                         ip += 5;
12251                         break;
12252                 }
12253                 case CEE_THROW:
12254                         CHECK_STACK (1);
12255                         MONO_INST_NEW (cfg, ins, OP_THROW);
12256                         --sp;
12257                         ins->sreg1 = sp [0]->dreg;
12258                         ip++;
12259                         cfg->cbb->out_of_line = TRUE;
12260                         MONO_ADD_INS (cfg->cbb, ins);
12261                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12262                         MONO_ADD_INS (cfg->cbb, ins);
12263                         sp = stack_start;
12264
12265                         link_bblock (cfg, cfg->cbb, end_bblock);
12266                         start_new_bblock = 1;
12267                         /* This can complicate code generation for llvm since the return value might not be defined */
12268                         if (COMPILE_LLVM (cfg))
12269                                 INLINE_FAILURE ("throw");
12270                         break;
12271                 case CEE_ENDFINALLY:
12272                         /* mono_save_seq_point_info () depends on this */
12273                         if (sp != stack_start)
12274                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12275                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12276                         MONO_ADD_INS (cfg->cbb, ins);
12277                         ip++;
12278                         start_new_bblock = 1;
12279
12280                         /*
12281                          * Control will leave the method so empty the stack, otherwise
12282                          * the next basic block will start with a nonempty stack.
12283                          */
12284                         while (sp != stack_start) {
12285                                 sp--;
12286                         }
12287                         break;
12288                 case CEE_LEAVE:
12289                 case CEE_LEAVE_S: {
12290                         GList *handlers;
12291
12292                         if (*ip == CEE_LEAVE) {
12293                                 CHECK_OPSIZE (5);
12294                                 target = ip + 5 + (gint32)read32(ip + 1);
12295                         } else {
12296                                 CHECK_OPSIZE (2);
12297                                 target = ip + 2 + (signed char)(ip [1]);
12298                         }
12299
12300                         /* empty the stack */
12301                         while (sp != stack_start) {
12302                                 sp--;
12303                         }
12304
12305                         /*
12306                          * If this leave statement is in a catch block, check for a
12307                          * pending exception, and rethrow it if necessary.
12308                          * We avoid doing this in runtime invoke wrappers, since those are called
12309                          * by native code which excepts the wrapper to catch all exceptions.
12310                          */
12311                         for (i = 0; i < header->num_clauses; ++i) {
12312                                 MonoExceptionClause *clause = &header->clauses [i];
12313
12314                                 /*
12315                                  * Use <= in the final comparison to handle clauses with multiple
12316                                  * leave statements, like in bug #78024.
12317                                  * The ordering of the exception clauses guarantees that we find the
12318                                  * innermost clause.
12319                                  */
12320                                 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) {
12321                                         MonoInst *exc_ins;
12322                                         MonoBasicBlock *dont_throw;
12323
12324                                         /*
12325                                           MonoInst *load;
12326
12327                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12328                                         */
12329
12330                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12331
12332                                         NEW_BBLOCK (cfg, dont_throw);
12333
12334                                         /*
12335                                          * Currently, we always rethrow the abort exception, despite the
12336                                          * fact that this is not correct. See thread6.cs for an example.
12337                                          * But propagating the abort exception is more important than
12338                                          * getting the sematics right.
12339                                          */
12340                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12341                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12342                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12343
12344                                         MONO_START_BB (cfg, dont_throw);
12345                                 }
12346                         }
12347
12348 #ifdef ENABLE_LLVM
12349                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12350 #endif
12351
12352                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12353                                 GList *tmp;
12354                                 MonoExceptionClause *clause;
12355
12356                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12357                                         clause = (MonoExceptionClause *)tmp->data;
12358                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12359                                         g_assert (tblock);
12360                                         link_bblock (cfg, cfg->cbb, tblock);
12361                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12362                                         ins->inst_target_bb = tblock;
12363                                         ins->inst_eh_block = clause;
12364                                         MONO_ADD_INS (cfg->cbb, ins);
12365                                         cfg->cbb->has_call_handler = 1;
12366                                         if (COMPILE_LLVM (cfg)) {
12367                                                 MonoBasicBlock *target_bb;
12368
12369                                                 /*
12370                                                  * Link the finally bblock with the target, since it will
12371                                                  * conceptually branch there.
12372                                                  */
12373                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12374                                                 GET_BBLOCK (cfg, target_bb, target);
12375                                                 link_bblock (cfg, tblock, target_bb);
12376                                         }
12377                                 }
12378                                 g_list_free (handlers);
12379                         }
12380
12381                         MONO_INST_NEW (cfg, ins, OP_BR);
12382                         MONO_ADD_INS (cfg->cbb, ins);
12383                         GET_BBLOCK (cfg, tblock, target);
12384                         link_bblock (cfg, cfg->cbb, tblock);
12385                         ins->inst_target_bb = tblock;
12386
12387                         start_new_bblock = 1;
12388
12389                         if (*ip == CEE_LEAVE)
12390                                 ip += 5;
12391                         else
12392                                 ip += 2;
12393
12394                         break;
12395                 }
12396
12397                         /*
12398                          * Mono specific opcodes
12399                          */
12400                 case MONO_CUSTOM_PREFIX: {
12401
12402                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12403
12404                         CHECK_OPSIZE (2);
12405                         switch (ip [1]) {
12406                         case CEE_MONO_ICALL: {
12407                                 gpointer func;
12408                                 MonoJitICallInfo *info;
12409
12410                                 token = read32 (ip + 2);
12411                                 func = mono_method_get_wrapper_data (method, token);
12412                                 info = mono_find_jit_icall_by_addr (func);
12413                                 if (!info)
12414                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12415                                 g_assert (info);
12416
12417                                 CHECK_STACK (info->sig->param_count);
12418                                 sp -= info->sig->param_count;
12419
12420                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12421                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12422                                         *sp++ = ins;
12423
12424                                 ip += 6;
12425                                 inline_costs += 10 * num_calls++;
12426
12427                                 break;
12428                         }
12429                         case CEE_MONO_LDPTR_CARD_TABLE:
12430                         case CEE_MONO_LDPTR_NURSERY_START:
12431                         case CEE_MONO_LDPTR_NURSERY_BITS:
12432                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12433                                 CHECK_STACK_OVF (1);
12434
12435                                 switch (ip [1]) {
12436                                         case CEE_MONO_LDPTR_CARD_TABLE:
12437                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12438                                                 break;
12439                                         case CEE_MONO_LDPTR_NURSERY_START:
12440                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12441                                                 break;
12442                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12443                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12444                                                 break;
12445                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12446                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12447                                                 break;
12448                                 }
12449
12450                                 *sp++ = ins;
12451                                 ip += 2;
12452                                 inline_costs += 10 * num_calls++;
12453                                 break;
12454                         }
12455                         case CEE_MONO_LDPTR: {
12456                                 gpointer ptr;
12457
12458                                 CHECK_STACK_OVF (1);
12459                                 CHECK_OPSIZE (6);
12460                                 token = read32 (ip + 2);
12461
12462                                 ptr = mono_method_get_wrapper_data (method, token);
12463                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12464                                 *sp++ = ins;
12465                                 ip += 6;
12466                                 inline_costs += 10 * num_calls++;
12467                                 /* Can't embed random pointers into AOT code */
12468                                 DISABLE_AOT (cfg);
12469                                 break;
12470                         }
12471                         case CEE_MONO_JIT_ICALL_ADDR: {
12472                                 MonoJitICallInfo *callinfo;
12473                                 gpointer ptr;
12474
12475                                 CHECK_STACK_OVF (1);
12476                                 CHECK_OPSIZE (6);
12477                                 token = read32 (ip + 2);
12478
12479                                 ptr = mono_method_get_wrapper_data (method, token);
12480                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12481                                 g_assert (callinfo);
12482                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12483                                 *sp++ = ins;
12484                                 ip += 6;
12485                                 inline_costs += 10 * num_calls++;
12486                                 break;
12487                         }
12488                         case CEE_MONO_ICALL_ADDR: {
12489                                 MonoMethod *cmethod;
12490                                 gpointer ptr;
12491
12492                                 CHECK_STACK_OVF (1);
12493                                 CHECK_OPSIZE (6);
12494                                 token = read32 (ip + 2);
12495
12496                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12497
12498                                 if (cfg->compile_aot) {
12499                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12500                                 } else {
12501                                         ptr = mono_lookup_internal_call (cmethod);
12502                                         g_assert (ptr);
12503                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12504                                 }
12505                                 *sp++ = ins;
12506                                 ip += 6;
12507                                 break;
12508                         }
12509                         case CEE_MONO_VTADDR: {
12510                                 MonoInst *src_var, *src;
12511
12512                                 CHECK_STACK (1);
12513                                 --sp;
12514
12515                                 // FIXME:
12516                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12517                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12518                                 *sp++ = src;
12519                                 ip += 2;
12520                                 break;
12521                         }
12522                         case CEE_MONO_NEWOBJ: {
12523                                 MonoInst *iargs [2];
12524
12525                                 CHECK_STACK_OVF (1);
12526                                 CHECK_OPSIZE (6);
12527                                 token = read32 (ip + 2);
12528                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12529                                 mono_class_init (klass);
12530                                 NEW_DOMAINCONST (cfg, iargs [0]);
12531                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12532                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12533                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12534                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12535                                 ip += 6;
12536                                 inline_costs += 10 * num_calls++;
12537                                 break;
12538                         }
12539                         case CEE_MONO_OBJADDR:
12540                                 CHECK_STACK (1);
12541                                 --sp;
12542                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12543                                 ins->dreg = alloc_ireg_mp (cfg);
12544                                 ins->sreg1 = sp [0]->dreg;
12545                                 ins->type = STACK_MP;
12546                                 MONO_ADD_INS (cfg->cbb, ins);
12547                                 *sp++ = ins;
12548                                 ip += 2;
12549                                 break;
12550                         case CEE_MONO_LDNATIVEOBJ:
12551                                 /*
12552                                  * Similar to LDOBJ, but instead load the unmanaged
12553                                  * representation of the vtype to the stack.
12554                                  */
12555                                 CHECK_STACK (1);
12556                                 CHECK_OPSIZE (6);
12557                                 --sp;
12558                                 token = read32 (ip + 2);
12559                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12560                                 g_assert (klass->valuetype);
12561                                 mono_class_init (klass);
12562
12563                                 {
12564                                         MonoInst *src, *dest, *temp;
12565
12566                                         src = sp [0];
12567                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12568                                         temp->backend.is_pinvoke = 1;
12569                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12570                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12571
12572                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12573                                         dest->type = STACK_VTYPE;
12574                                         dest->klass = klass;
12575
12576                                         *sp ++ = dest;
12577                                         ip += 6;
12578                                 }
12579                                 break;
12580                         case CEE_MONO_RETOBJ: {
12581                                 /*
12582                                  * Same as RET, but return the native representation of a vtype
12583                                  * to the caller.
12584                                  */
12585                                 g_assert (cfg->ret);
12586                                 g_assert (mono_method_signature (method)->pinvoke);
12587                                 CHECK_STACK (1);
12588                                 --sp;
12589
12590                                 CHECK_OPSIZE (6);
12591                                 token = read32 (ip + 2);
12592                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12593
12594                                 if (!cfg->vret_addr) {
12595                                         g_assert (cfg->ret_var_is_local);
12596
12597                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12598                                 } else {
12599                                         EMIT_NEW_RETLOADA (cfg, ins);
12600                                 }
12601                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12602
12603                                 if (sp != stack_start)
12604                                         UNVERIFIED;
12605
12606                                 MONO_INST_NEW (cfg, ins, OP_BR);
12607                                 ins->inst_target_bb = end_bblock;
12608                                 MONO_ADD_INS (cfg->cbb, ins);
12609                                 link_bblock (cfg, cfg->cbb, end_bblock);
12610                                 start_new_bblock = 1;
12611                                 ip += 6;
12612                                 break;
12613                         }
12614                         case CEE_MONO_CISINST:
12615                         case CEE_MONO_CCASTCLASS: {
12616                                 int token;
12617                                 CHECK_STACK (1);
12618                                 --sp;
12619                                 CHECK_OPSIZE (6);
12620                                 token = read32 (ip + 2);
12621                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12622                                 if (ip [1] == CEE_MONO_CISINST)
12623                                         ins = handle_cisinst (cfg, klass, sp [0]);
12624                                 else
12625                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12626                                 *sp++ = ins;
12627                                 ip += 6;
12628                                 break;
12629                         }
12630                         case CEE_MONO_SAVE_LMF:
12631                         case CEE_MONO_RESTORE_LMF:
12632                                 ip += 2;
12633                                 break;
12634                         case CEE_MONO_CLASSCONST:
12635                                 CHECK_STACK_OVF (1);
12636                                 CHECK_OPSIZE (6);
12637                                 token = read32 (ip + 2);
12638                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12639                                 *sp++ = ins;
12640                                 ip += 6;
12641                                 inline_costs += 10 * num_calls++;
12642                                 break;
12643                         case CEE_MONO_NOT_TAKEN:
12644                                 cfg->cbb->out_of_line = TRUE;
12645                                 ip += 2;
12646                                 break;
12647                         case CEE_MONO_TLS: {
12648                                 MonoTlsKey key;
12649
12650                                 CHECK_STACK_OVF (1);
12651                                 CHECK_OPSIZE (6);
12652                                 key = (MonoTlsKey)read32 (ip + 2);
12653                                 g_assert (key < TLS_KEY_NUM);
12654
12655                                 ins = mono_create_tls_get (cfg, key);
12656                                 if (!ins) {
12657                                         if (cfg->compile_aot) {
12658                                                 DISABLE_AOT (cfg);
12659                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12660                                                 ins->dreg = alloc_preg (cfg);
12661                                                 ins->type = STACK_PTR;
12662                                         } else {
12663                                                 g_assert_not_reached ();
12664                                         }
12665                                 }
12666                                 ins->type = STACK_PTR;
12667                                 MONO_ADD_INS (cfg->cbb, ins);
12668                                 *sp++ = ins;
12669                                 ip += 6;
12670                                 break;
12671                         }
12672                         case CEE_MONO_DYN_CALL: {
12673                                 MonoCallInst *call;
12674
12675                                 /* It would be easier to call a trampoline, but that would put an
12676                                  * extra frame on the stack, confusing exception handling. So
12677                                  * implement it inline using an opcode for now.
12678                                  */
12679
12680                                 if (!cfg->dyn_call_var) {
12681                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12682                                         /* prevent it from being register allocated */
12683                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12684                                 }
12685
12686                                 /* Has to use a call inst since it local regalloc expects it */
12687                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12688                                 ins = (MonoInst*)call;
12689                                 sp -= 2;
12690                                 ins->sreg1 = sp [0]->dreg;
12691                                 ins->sreg2 = sp [1]->dreg;
12692                                 MONO_ADD_INS (cfg->cbb, ins);
12693
12694                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12695
12696                                 ip += 2;
12697                                 inline_costs += 10 * num_calls++;
12698
12699                                 break;
12700                         }
12701                         case CEE_MONO_MEMORY_BARRIER: {
12702                                 CHECK_OPSIZE (6);
12703                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12704                                 ip += 6;
12705                                 break;
12706                         }
12707                         case CEE_MONO_ATOMIC_STORE_I4: {
12708                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
12709
12710                                 CHECK_OPSIZE (6);
12711                                 CHECK_STACK (2);
12712                                 sp -= 2;
12713
12714                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
12715                                 ins->dreg = sp [0]->dreg;
12716                                 ins->sreg1 = sp [1]->dreg;
12717                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
12718                                 MONO_ADD_INS (cfg->cbb, ins);
12719
12720                                 ip += 6;
12721                                 break;
12722                         }
12723                         case CEE_MONO_JIT_ATTACH: {
12724                                 MonoInst *args [16], *domain_ins;
12725                                 MonoInst *ad_ins, *jit_tls_ins;
12726                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12727
12728                                 g_assert (!mono_threads_is_coop_enabled ());
12729
12730                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12731
12732                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12733                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12734
12735                                 ad_ins = mono_get_domain_intrinsic (cfg);
12736                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12737
12738                                 if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12739                                         NEW_BBLOCK (cfg, next_bb);
12740                                         NEW_BBLOCK (cfg, call_bb);
12741
12742                                         if (cfg->compile_aot) {
12743                                                 /* AOT code is only used in the root domain */
12744                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12745                                         } else {
12746                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12747                                         }
12748                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12749                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12750                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12751
12752                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12753                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12754                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12755
12756                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12757                                         MONO_START_BB (cfg, call_bb);
12758                                 }
12759
12760                                 /* AOT code is only used in the root domain */
12761                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12762                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12763                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12764
12765                                 if (next_bb)
12766                                         MONO_START_BB (cfg, next_bb);
12767
12768
12769                                 ip += 2;
12770                                 break;
12771                         }
12772                         case CEE_MONO_JIT_DETACH: {
12773                                 MonoInst *args [16];
12774
12775                                 /* Restore the original domain */
12776                                 dreg = alloc_ireg (cfg);
12777                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12778                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12779                                 ip += 2;
12780                                 break;
12781                         }
12782                         case CEE_MONO_CALLI_EXTRA_ARG: {
12783                                 MonoInst *addr;
12784                                 MonoMethodSignature *fsig;
12785                                 MonoInst *arg;
12786
12787                                 /*
12788                                  * This is the same as CEE_CALLI, but passes an additional argument
12789                                  * to the called method in llvmonly mode.
12790                                  * This is only used by delegate invoke wrappers to call the
12791                                  * actual delegate method.
12792                                  */
12793                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12794
12795                                 CHECK_OPSIZE (6);
12796                                 token = read32 (ip + 2);
12797
12798                                 ins = NULL;
12799
12800                                 cmethod = NULL;
12801                                 CHECK_STACK (1);
12802                                 --sp;
12803                                 addr = *sp;
12804                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12805                                 CHECK_CFG_ERROR;
12806
12807                                 if (cfg->llvm_only)
12808                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12809
12810                                 n = fsig->param_count + fsig->hasthis + 1;
12811
12812                                 CHECK_STACK (n);
12813
12814                                 sp -= n;
12815                                 arg = sp [n - 1];
12816
12817                                 if (cfg->llvm_only) {
12818                                         /*
12819                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12820                                          * cconv. This is set by mono_init_delegate ().
12821                                          */
12822                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12823                                                 MonoInst *callee = addr;
12824                                                 MonoInst *call, *localloc_ins;
12825                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12826                                                 int low_bit_reg = alloc_preg (cfg);
12827
12828                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12829                                                 NEW_BBLOCK (cfg, end_bb);
12830
12831                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12832                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12833                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12834
12835                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12836                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12837                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12838                                                 /*
12839                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12840                                                  */
12841                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12842                                                 ins->dreg = alloc_preg (cfg);
12843                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12844                                                 MONO_ADD_INS (cfg->cbb, ins);
12845                                                 localloc_ins = ins;
12846                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12847                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12848                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12849
12850                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12851                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12852
12853                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12854                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12855                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12856                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12857                                                 ins->dreg = call->dreg;
12858
12859                                                 MONO_START_BB (cfg, end_bb);
12860                                         } else {
12861                                                 /* Caller uses a normal calling conv */
12862
12863                                                 MonoInst *callee = addr;
12864                                                 MonoInst *call, *localloc_ins;
12865                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12866                                                 int low_bit_reg = alloc_preg (cfg);
12867
12868                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12869                                                 NEW_BBLOCK (cfg, end_bb);
12870
12871                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12872                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12873                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12874
12875                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12876                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12877                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12878                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12879                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12880                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12881                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12882                                                 MONO_ADD_INS (cfg->cbb, addr);
12883                                                 /*
12884                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12885                                                  */
12886                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12887                                                 ins->dreg = alloc_preg (cfg);
12888                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12889                                                 MONO_ADD_INS (cfg->cbb, ins);
12890                                                 localloc_ins = ins;
12891                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12892                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12893                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12894
12895                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12896                                                 ins->dreg = call->dreg;
12897                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12898
12899                                                 MONO_START_BB (cfg, end_bb);
12900                                         }
12901                                 } else {
12902                                         /* Same as CEE_CALLI */
12903                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12904                                                 /*
12905                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12906                                                  */
12907                                                 MonoInst *callee = addr;
12908
12909                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12910                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12911                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12912                                         } else {
12913                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12914                                         }
12915                                 }
12916
12917                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12918                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12919
12920                                 CHECK_CFG_EXCEPTION;
12921
12922                                 ip += 6;
12923                                 ins_flag = 0;
12924                                 constrained_class = NULL;
12925                                 break;
12926                         }
12927                         case CEE_MONO_LDDOMAIN:
12928                                 CHECK_STACK_OVF (1);
12929                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12930                                 ip += 2;
12931                                 *sp++ = ins;
12932                                 break;
12933                         default:
12934                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12935                                 break;
12936                         }
12937                         break;
12938                 }
12939
12940                 case CEE_PREFIX1: {
12941                         CHECK_OPSIZE (2);
12942                         switch (ip [1]) {
12943                         case CEE_ARGLIST: {
12944                                 /* somewhat similar to LDTOKEN */
12945                                 MonoInst *addr, *vtvar;
12946                                 CHECK_STACK_OVF (1);
12947                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12948
12949                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12950                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12951
12952                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12953                                 ins->type = STACK_VTYPE;
12954                                 ins->klass = mono_defaults.argumenthandle_class;
12955                                 *sp++ = ins;
12956                                 ip += 2;
12957                                 break;
12958                         }
12959                         case CEE_CEQ:
12960                         case CEE_CGT:
12961                         case CEE_CGT_UN:
12962                         case CEE_CLT:
12963                         case CEE_CLT_UN: {
12964                                 MonoInst *cmp, *arg1, *arg2;
12965
12966                                 CHECK_STACK (2);
12967                                 sp -= 2;
12968                                 arg1 = sp [0];
12969                                 arg2 = sp [1];
12970
12971                                 /*
12972                                  * The following transforms:
12973                                  *    CEE_CEQ    into OP_CEQ
12974                                  *    CEE_CGT    into OP_CGT
12975                                  *    CEE_CGT_UN into OP_CGT_UN
12976                                  *    CEE_CLT    into OP_CLT
12977                                  *    CEE_CLT_UN into OP_CLT_UN
12978                                  */
12979                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12980
12981                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12982                                 cmp->sreg1 = arg1->dreg;
12983                                 cmp->sreg2 = arg2->dreg;
12984                                 type_from_op (cfg, cmp, arg1, arg2);
12985                                 CHECK_TYPE (cmp);
12986                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12987                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12988                                         cmp->opcode = OP_LCOMPARE;
12989                                 else if (arg1->type == STACK_R4)
12990                                         cmp->opcode = OP_RCOMPARE;
12991                                 else if (arg1->type == STACK_R8)
12992                                         cmp->opcode = OP_FCOMPARE;
12993                                 else
12994                                         cmp->opcode = OP_ICOMPARE;
12995                                 MONO_ADD_INS (cfg->cbb, cmp);
12996                                 ins->type = STACK_I4;
12997                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12998                                 type_from_op (cfg, ins, arg1, arg2);
12999
13000                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13001                                         /*
13002                                          * The backends expect the fceq opcodes to do the
13003                                          * comparison too.
13004                                          */
13005                                         ins->sreg1 = cmp->sreg1;
13006                                         ins->sreg2 = cmp->sreg2;
13007                                         NULLIFY_INS (cmp);
13008                                 }
13009                                 MONO_ADD_INS (cfg->cbb, ins);
13010                                 *sp++ = ins;
13011                                 ip += 2;
13012                                 break;
13013                         }
13014                         case CEE_LDFTN: {
13015                                 MonoInst *argconst;
13016                                 MonoMethod *cil_method;
13017
13018                                 CHECK_STACK_OVF (1);
13019                                 CHECK_OPSIZE (6);
13020                                 n = read32 (ip + 2);
13021                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13022                                 CHECK_CFG_ERROR;
13023
13024                                 mono_class_init (cmethod->klass);
13025
13026                                 mono_save_token_info (cfg, image, n, cmethod);
13027
13028                                 context_used = mini_method_check_context_used (cfg, cmethod);
13029
13030                                 cil_method = cmethod;
13031                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13032                                         emit_method_access_failure (cfg, method, cil_method);
13033
13034                                 if (mono_security_core_clr_enabled ())
13035                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13036
13037                                 /*
13038                                  * Optimize the common case of ldftn+delegate creation
13039                                  */
13040                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13041                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13042                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13043                                                 MonoInst *target_ins, *handle_ins;
13044                                                 MonoMethod *invoke;
13045                                                 int invoke_context_used;
13046
13047                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13048                                                 if (!invoke || !mono_method_signature (invoke))
13049                                                         LOAD_ERROR;
13050
13051                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13052
13053                                                 target_ins = sp [-1];
13054
13055                                                 if (mono_security_core_clr_enabled ())
13056                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13057
13058                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13059                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13060                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13061                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13062                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13063                                                         }
13064                                                 }
13065
13066                                                 /* FIXME: SGEN support */
13067                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13068                                                         ip += 6;
13069                                                         if (cfg->verbose_level > 3)
13070                                                                 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));
13071                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13072                                                                 sp --;
13073                                                                 *sp = handle_ins;
13074                                                                 CHECK_CFG_EXCEPTION;
13075                                                                 ip += 5;
13076                                                                 sp ++;
13077                                                                 break;
13078                                                         }
13079                                                         ip -= 6;
13080                                                 }
13081                                         }
13082                                 }
13083
13084                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13085                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13086                                 *sp++ = ins;
13087
13088                                 ip += 6;
13089                                 inline_costs += 10 * num_calls++;
13090                                 break;
13091                         }
13092                         case CEE_LDVIRTFTN: {
13093                                 MonoInst *args [2];
13094
13095                                 CHECK_STACK (1);
13096                                 CHECK_OPSIZE (6);
13097                                 n = read32 (ip + 2);
13098                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13099                                 CHECK_CFG_ERROR;
13100
13101                                 mono_class_init (cmethod->klass);
13102
13103                                 context_used = mini_method_check_context_used (cfg, cmethod);
13104
13105                                 if (mono_security_core_clr_enabled ())
13106                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13107
13108                                 /*
13109                                  * Optimize the common case of ldvirtftn+delegate creation
13110                                  */
13111                                 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)) {
13112                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13113                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13114                                                 MonoInst *target_ins, *handle_ins;
13115                                                 MonoMethod *invoke;
13116                                                 int invoke_context_used;
13117                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13118
13119                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13120                                                 if (!invoke || !mono_method_signature (invoke))
13121                                                         LOAD_ERROR;
13122
13123                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13124
13125                                                 target_ins = sp [-1];
13126
13127                                                 if (mono_security_core_clr_enabled ())
13128                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13129
13130                                                 /* FIXME: SGEN support */
13131                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13132                                                         ip += 6;
13133                                                         if (cfg->verbose_level > 3)
13134                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13135                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13136                                                                 sp -= 2;
13137                                                                 *sp = handle_ins;
13138                                                                 CHECK_CFG_EXCEPTION;
13139                                                                 ip += 5;
13140                                                                 sp ++;
13141                                                                 break;
13142                                                         }
13143                                                         ip -= 6;
13144                                                 }
13145                                         }
13146                                 }
13147
13148                                 --sp;
13149                                 args [0] = *sp;
13150
13151                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13152                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13153
13154                                 if (context_used)
13155                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13156                                 else
13157                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13158
13159                                 ip += 6;
13160                                 inline_costs += 10 * num_calls++;
13161                                 break;
13162                         }
13163                         case CEE_LDARG:
13164                                 CHECK_STACK_OVF (1);
13165                                 CHECK_OPSIZE (4);
13166                                 n = read16 (ip + 2);
13167                                 CHECK_ARG (n);
13168                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13169                                 *sp++ = ins;
13170                                 ip += 4;
13171                                 break;
13172                         case CEE_LDARGA:
13173                                 CHECK_STACK_OVF (1);
13174                                 CHECK_OPSIZE (4);
13175                                 n = read16 (ip + 2);
13176                                 CHECK_ARG (n);
13177                                 NEW_ARGLOADA (cfg, ins, n);
13178                                 MONO_ADD_INS (cfg->cbb, ins);
13179                                 *sp++ = ins;
13180                                 ip += 4;
13181                                 break;
13182                         case CEE_STARG:
13183                                 CHECK_STACK (1);
13184                                 --sp;
13185                                 CHECK_OPSIZE (4);
13186                                 n = read16 (ip + 2);
13187                                 CHECK_ARG (n);
13188                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13189                                         UNVERIFIED;
13190                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13191                                 ip += 4;
13192                                 break;
13193                         case CEE_LDLOC:
13194                                 CHECK_STACK_OVF (1);
13195                                 CHECK_OPSIZE (4);
13196                                 n = read16 (ip + 2);
13197                                 CHECK_LOCAL (n);
13198                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13199                                 *sp++ = ins;
13200                                 ip += 4;
13201                                 break;
13202                         case CEE_LDLOCA: {
13203                                 unsigned char *tmp_ip;
13204                                 CHECK_STACK_OVF (1);
13205                                 CHECK_OPSIZE (4);
13206                                 n = read16 (ip + 2);
13207                                 CHECK_LOCAL (n);
13208
13209                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13210                                         ip = tmp_ip;
13211                                         inline_costs += 1;
13212                                         break;
13213                                 }
13214
13215                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13216                                 *sp++ = ins;
13217                                 ip += 4;
13218                                 break;
13219                         }
13220                         case CEE_STLOC:
13221                                 CHECK_STACK (1);
13222                                 --sp;
13223                                 CHECK_OPSIZE (4);
13224                                 n = read16 (ip + 2);
13225                                 CHECK_LOCAL (n);
13226                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13227                                         UNVERIFIED;
13228                                 emit_stloc_ir (cfg, sp, header, n);
13229                                 ip += 4;
13230                                 inline_costs += 1;
13231                                 break;
13232                         case CEE_LOCALLOC:
13233                                 CHECK_STACK (1);
13234                                 --sp;
13235                                 if (sp != stack_start)
13236                                         UNVERIFIED;
13237                                 if (cfg->method != method)
13238                                         /*
13239                                          * Inlining this into a loop in a parent could lead to
13240                                          * stack overflows which is different behavior than the
13241                                          * non-inlined case, thus disable inlining in this case.
13242                                          */
13243                                         INLINE_FAILURE("localloc");
13244
13245                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13246                                 ins->dreg = alloc_preg (cfg);
13247                                 ins->sreg1 = sp [0]->dreg;
13248                                 ins->type = STACK_PTR;
13249                                 MONO_ADD_INS (cfg->cbb, ins);
13250
13251                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13252                                 if (init_locals)
13253                                         ins->flags |= MONO_INST_INIT;
13254
13255                                 *sp++ = ins;
13256                                 ip += 2;
13257                                 break;
13258                         case CEE_ENDFILTER: {
13259                                 MonoExceptionClause *clause, *nearest;
13260                                 int cc;
13261
13262                                 CHECK_STACK (1);
13263                                 --sp;
13264                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13265                                         UNVERIFIED;
13266                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13267                                 ins->sreg1 = (*sp)->dreg;
13268                                 MONO_ADD_INS (cfg->cbb, ins);
13269                                 start_new_bblock = 1;
13270                                 ip += 2;
13271
13272                                 nearest = NULL;
13273                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13274                                         clause = &header->clauses [cc];
13275                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13276                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13277                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13278                                                 nearest = clause;
13279                                 }
13280                                 g_assert (nearest);
13281                                 if ((ip - header->code) != nearest->handler_offset)
13282                                         UNVERIFIED;
13283
13284                                 break;
13285                         }
13286                         case CEE_UNALIGNED_:
13287                                 ins_flag |= MONO_INST_UNALIGNED;
13288                                 /* FIXME: record alignment? we can assume 1 for now */
13289                                 CHECK_OPSIZE (3);
13290                                 ip += 3;
13291                                 break;
13292                         case CEE_VOLATILE_:
13293                                 ins_flag |= MONO_INST_VOLATILE;
13294                                 ip += 2;
13295                                 break;
13296                         case CEE_TAIL_:
13297                                 ins_flag   |= MONO_INST_TAILCALL;
13298                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13299                                 /* Can't inline tail calls at this time */
13300                                 inline_costs += 100000;
13301                                 ip += 2;
13302                                 break;
13303                         case CEE_INITOBJ:
13304                                 CHECK_STACK (1);
13305                                 --sp;
13306                                 CHECK_OPSIZE (6);
13307                                 token = read32 (ip + 2);
13308                                 klass = mini_get_class (method, token, generic_context);
13309                                 CHECK_TYPELOAD (klass);
13310                                 if (generic_class_is_reference_type (cfg, klass))
13311                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13312                                 else
13313                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13314                                 ip += 6;
13315                                 inline_costs += 1;
13316                                 break;
13317                         case CEE_CONSTRAINED_:
13318                                 CHECK_OPSIZE (6);
13319                                 token = read32 (ip + 2);
13320                                 constrained_class = mini_get_class (method, token, generic_context);
13321                                 CHECK_TYPELOAD (constrained_class);
13322                                 ip += 6;
13323                                 break;
13324                         case CEE_CPBLK:
13325                         case CEE_INITBLK: {
13326                                 MonoInst *iargs [3];
13327                                 CHECK_STACK (3);
13328                                 sp -= 3;
13329
13330                                 /* Skip optimized paths for volatile operations. */
13331                                 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)) {
13332                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13333                                 } 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)) {
13334                                         /* emit_memset only works when val == 0 */
13335                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13336                                 } else {
13337                                         MonoInst *call;
13338                                         iargs [0] = sp [0];
13339                                         iargs [1] = sp [1];
13340                                         iargs [2] = sp [2];
13341                                         if (ip [1] == CEE_CPBLK) {
13342                                                 /*
13343                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13344                                                  * and release barriers for cpblk. It is technically both a load and
13345                                                  * store operation, so it seems like that's the sensible thing to do.
13346                                                  *
13347                                                  * FIXME: We emit full barriers on both sides of the operation for
13348                                                  * simplicity. We should have a separate atomic memcpy method instead.
13349                                                  */
13350                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13351
13352                                                 if (ins_flag & MONO_INST_VOLATILE)
13353                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13354
13355                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13356                                                 call->flags |= ins_flag;
13357
13358                                                 if (ins_flag & MONO_INST_VOLATILE)
13359                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13360                                         } else {
13361                                                 MonoMethod *memset_method = get_memset_method ();
13362                                                 if (ins_flag & MONO_INST_VOLATILE) {
13363                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13364                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13365                                                 }
13366                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13367                                                 call->flags |= ins_flag;
13368                                         }
13369                                 }
13370                                 ip += 2;
13371                                 ins_flag = 0;
13372                                 inline_costs += 1;
13373                                 break;
13374                         }
13375                         case CEE_NO_:
13376                                 CHECK_OPSIZE (3);
13377                                 if (ip [2] & 0x1)
13378                                         ins_flag |= MONO_INST_NOTYPECHECK;
13379                                 if (ip [2] & 0x2)
13380                                         ins_flag |= MONO_INST_NORANGECHECK;
13381                                 /* we ignore the no-nullcheck for now since we
13382                                  * really do it explicitly only when doing callvirt->call
13383                                  */
13384                                 ip += 3;
13385                                 break;
13386                         case CEE_RETHROW: {
13387                                 MonoInst *load;
13388                                 int handler_offset = -1;
13389
13390                                 for (i = 0; i < header->num_clauses; ++i) {
13391                                         MonoExceptionClause *clause = &header->clauses [i];
13392                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13393                                                 handler_offset = clause->handler_offset;
13394                                                 break;
13395                                         }
13396                                 }
13397
13398                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13399
13400                                 if (handler_offset == -1)
13401                                         UNVERIFIED;
13402
13403                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13404                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13405                                 ins->sreg1 = load->dreg;
13406                                 MONO_ADD_INS (cfg->cbb, ins);
13407
13408                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13409                                 MONO_ADD_INS (cfg->cbb, ins);
13410
13411                                 sp = stack_start;
13412                                 link_bblock (cfg, cfg->cbb, end_bblock);
13413                                 start_new_bblock = 1;
13414                                 ip += 2;
13415                                 break;
13416                         }
13417                         case CEE_SIZEOF: {
13418                                 guint32 val;
13419                                 int ialign;
13420
13421                                 CHECK_STACK_OVF (1);
13422                                 CHECK_OPSIZE (6);
13423                                 token = read32 (ip + 2);
13424                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13425                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13426                                         CHECK_CFG_ERROR;
13427
13428                                         val = mono_type_size (type, &ialign);
13429                                 } else {
13430                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13431                                         CHECK_TYPELOAD (klass);
13432
13433                                         val = mono_type_size (&klass->byval_arg, &ialign);
13434
13435                                         if (mini_is_gsharedvt_klass (klass))
13436                                                 GSHAREDVT_FAILURE (*ip);
13437                                 }
13438                                 EMIT_NEW_ICONST (cfg, ins, val);
13439                                 *sp++= ins;
13440                                 ip += 6;
13441                                 break;
13442                         }
13443                         case CEE_REFANYTYPE: {
13444                                 MonoInst *src_var, *src;
13445
13446                                 GSHAREDVT_FAILURE (*ip);
13447
13448                                 CHECK_STACK (1);
13449                                 --sp;
13450
13451                                 // FIXME:
13452                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13453                                 if (!src_var)
13454                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13455                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13456                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13457                                 *sp++ = ins;
13458                                 ip += 2;
13459                                 break;
13460                         }
13461                         case CEE_READONLY_:
13462                                 readonly = TRUE;
13463                                 ip += 2;
13464                                 break;
13465
13466                         case CEE_UNUSED56:
13467                         case CEE_UNUSED57:
13468                         case CEE_UNUSED70:
13469                         case CEE_UNUSED:
13470                         case CEE_UNUSED99:
13471                                 UNVERIFIED;
13472
13473                         default:
13474                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13475                                 UNVERIFIED;
13476                         }
13477                         break;
13478                 }
13479                 case CEE_UNUSED58:
13480                 case CEE_UNUSED1:
13481                         UNVERIFIED;
13482
13483                 default:
13484                         g_warning ("opcode 0x%02x not handled", *ip);
13485                         UNVERIFIED;
13486                 }
13487         }
13488         if (start_new_bblock != 1)
13489                 UNVERIFIED;
13490
13491         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13492         if (cfg->cbb->next_bb) {
13493                 /* This could already be set because of inlining, #693905 */
13494                 MonoBasicBlock *bb = cfg->cbb;
13495
13496                 while (bb->next_bb)
13497                         bb = bb->next_bb;
13498                 bb->next_bb = end_bblock;
13499         } else {
13500                 cfg->cbb->next_bb = end_bblock;
13501         }
13502
13503         if (cfg->method == method && cfg->domainvar) {
13504                 MonoInst *store;
13505                 MonoInst *get_domain;
13506
13507                 cfg->cbb = init_localsbb;
13508
13509                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13510                         MONO_ADD_INS (cfg->cbb, get_domain);
13511                 } else {
13512                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13513                 }
13514                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13515                 MONO_ADD_INS (cfg->cbb, store);
13516         }
13517
13518 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13519         if (cfg->compile_aot)
13520                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13521                 mono_get_got_var (cfg);
13522 #endif
13523
13524         if (cfg->method == method && cfg->got_var)
13525                 mono_emit_load_got_addr (cfg);
13526
13527         if (init_localsbb) {
13528                 cfg->cbb = init_localsbb;
13529                 cfg->ip = NULL;
13530                 for (i = 0; i < header->num_locals; ++i) {
13531                         emit_init_local (cfg, i, header->locals [i], init_locals);
13532                 }
13533         }
13534
13535         if (cfg->init_ref_vars && cfg->method == method) {
13536                 /* Emit initialization for ref vars */
13537                 // FIXME: Avoid duplication initialization for IL locals.
13538                 for (i = 0; i < cfg->num_varinfo; ++i) {
13539                         MonoInst *ins = cfg->varinfo [i];
13540
13541                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13542                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13543                 }
13544         }
13545
13546         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13547                 cfg->cbb = init_localsbb;
13548                 emit_push_lmf (cfg);
13549         }
13550
13551         cfg->cbb = init_localsbb;
13552         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13553
13554         if (seq_points) {
13555                 MonoBasicBlock *bb;
13556
13557                 /*
13558                  * Make seq points at backward branch targets interruptable.
13559                  */
13560                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13561                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13562                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13563         }
13564
13565         /* Add a sequence point for method entry/exit events */
13566         if (seq_points && cfg->gen_sdb_seq_points) {
13567                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13568                 MONO_ADD_INS (init_localsbb, ins);
13569                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13570                 MONO_ADD_INS (cfg->bb_exit, ins);
13571         }
13572
13573         /*
13574          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13575          * the code they refer to was dead (#11880).
13576          */
13577         if (sym_seq_points) {
13578                 for (i = 0; i < header->code_size; ++i) {
13579                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13580                                 MonoInst *ins;
13581
13582                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13583                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13584                         }
13585                 }
13586         }
13587
13588         cfg->ip = NULL;
13589
13590         if (cfg->method == method) {
13591                 MonoBasicBlock *bb;
13592                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13593                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13594                         if (cfg->spvars)
13595                                 mono_create_spvar_for_region (cfg, bb->region);
13596                         if (cfg->verbose_level > 2)
13597                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13598                 }
13599         } else {
13600                 MonoBasicBlock *bb;
13601                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13602                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13603                         bb->real_offset = inline_offset;
13604                 }
13605         }
13606
13607         if (inline_costs < 0) {
13608                 char *mname;
13609
13610                 /* Method is too large */
13611                 mname = mono_method_full_name (method, TRUE);
13612                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13613                 g_free (mname);
13614         }
13615
13616         if ((cfg->verbose_level > 2) && (cfg->method == method))
13617                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13618
13619         goto cleanup;
13620
13621 mono_error_exit:
13622         g_assert (!mono_error_ok (&cfg->error));
13623         goto cleanup;
13624
13625  exception_exit:
13626         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13627         goto cleanup;
13628
13629  unverified:
13630         set_exception_type_from_invalid_il (cfg, method, ip);
13631         goto cleanup;
13632
13633  cleanup:
13634         g_slist_free (class_inits);
13635         mono_basic_block_free (original_bb);
13636         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13637         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13638         if (cfg->exception_type)
13639                 return -1;
13640         else
13641                 return inline_costs;
13642 }
13643
13644 static int
13645 store_membase_reg_to_store_membase_imm (int opcode)
13646 {
13647         switch (opcode) {
13648         case OP_STORE_MEMBASE_REG:
13649                 return OP_STORE_MEMBASE_IMM;
13650         case OP_STOREI1_MEMBASE_REG:
13651                 return OP_STOREI1_MEMBASE_IMM;
13652         case OP_STOREI2_MEMBASE_REG:
13653                 return OP_STOREI2_MEMBASE_IMM;
13654         case OP_STOREI4_MEMBASE_REG:
13655                 return OP_STOREI4_MEMBASE_IMM;
13656         case OP_STOREI8_MEMBASE_REG:
13657                 return OP_STOREI8_MEMBASE_IMM;
13658         default:
13659                 g_assert_not_reached ();
13660         }
13661
13662         return -1;
13663 }
13664
13665 int
13666 mono_op_to_op_imm (int opcode)
13667 {
13668         switch (opcode) {
13669         case OP_IADD:
13670                 return OP_IADD_IMM;
13671         case OP_ISUB:
13672                 return OP_ISUB_IMM;
13673         case OP_IDIV:
13674                 return OP_IDIV_IMM;
13675         case OP_IDIV_UN:
13676                 return OP_IDIV_UN_IMM;
13677         case OP_IREM:
13678                 return OP_IREM_IMM;
13679         case OP_IREM_UN:
13680                 return OP_IREM_UN_IMM;
13681         case OP_IMUL:
13682                 return OP_IMUL_IMM;
13683         case OP_IAND:
13684                 return OP_IAND_IMM;
13685         case OP_IOR:
13686                 return OP_IOR_IMM;
13687         case OP_IXOR:
13688                 return OP_IXOR_IMM;
13689         case OP_ISHL:
13690                 return OP_ISHL_IMM;
13691         case OP_ISHR:
13692                 return OP_ISHR_IMM;
13693         case OP_ISHR_UN:
13694                 return OP_ISHR_UN_IMM;
13695
13696         case OP_LADD:
13697                 return OP_LADD_IMM;
13698         case OP_LSUB:
13699                 return OP_LSUB_IMM;
13700         case OP_LAND:
13701                 return OP_LAND_IMM;
13702         case OP_LOR:
13703                 return OP_LOR_IMM;
13704         case OP_LXOR:
13705                 return OP_LXOR_IMM;
13706         case OP_LSHL:
13707                 return OP_LSHL_IMM;
13708         case OP_LSHR:
13709                 return OP_LSHR_IMM;
13710         case OP_LSHR_UN:
13711                 return OP_LSHR_UN_IMM;
13712 #if SIZEOF_REGISTER == 8
13713         case OP_LREM:
13714                 return OP_LREM_IMM;
13715 #endif
13716
13717         case OP_COMPARE:
13718                 return OP_COMPARE_IMM;
13719         case OP_ICOMPARE:
13720                 return OP_ICOMPARE_IMM;
13721         case OP_LCOMPARE:
13722                 return OP_LCOMPARE_IMM;
13723
13724         case OP_STORE_MEMBASE_REG:
13725                 return OP_STORE_MEMBASE_IMM;
13726         case OP_STOREI1_MEMBASE_REG:
13727                 return OP_STOREI1_MEMBASE_IMM;
13728         case OP_STOREI2_MEMBASE_REG:
13729                 return OP_STOREI2_MEMBASE_IMM;
13730         case OP_STOREI4_MEMBASE_REG:
13731                 return OP_STOREI4_MEMBASE_IMM;
13732
13733 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13734         case OP_X86_PUSH:
13735                 return OP_X86_PUSH_IMM;
13736         case OP_X86_COMPARE_MEMBASE_REG:
13737                 return OP_X86_COMPARE_MEMBASE_IMM;
13738 #endif
13739 #if defined(TARGET_AMD64)
13740         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13741                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13742 #endif
13743         case OP_VOIDCALL_REG:
13744                 return OP_VOIDCALL;
13745         case OP_CALL_REG:
13746                 return OP_CALL;
13747         case OP_LCALL_REG:
13748                 return OP_LCALL;
13749         case OP_FCALL_REG:
13750                 return OP_FCALL;
13751         case OP_LOCALLOC:
13752                 return OP_LOCALLOC_IMM;
13753         }
13754
13755         return -1;
13756 }
13757
13758 static int
13759 ldind_to_load_membase (int opcode)
13760 {
13761         switch (opcode) {
13762         case CEE_LDIND_I1:
13763                 return OP_LOADI1_MEMBASE;
13764         case CEE_LDIND_U1:
13765                 return OP_LOADU1_MEMBASE;
13766         case CEE_LDIND_I2:
13767                 return OP_LOADI2_MEMBASE;
13768         case CEE_LDIND_U2:
13769                 return OP_LOADU2_MEMBASE;
13770         case CEE_LDIND_I4:
13771                 return OP_LOADI4_MEMBASE;
13772         case CEE_LDIND_U4:
13773                 return OP_LOADU4_MEMBASE;
13774         case CEE_LDIND_I:
13775                 return OP_LOAD_MEMBASE;
13776         case CEE_LDIND_REF:
13777                 return OP_LOAD_MEMBASE;
13778         case CEE_LDIND_I8:
13779                 return OP_LOADI8_MEMBASE;
13780         case CEE_LDIND_R4:
13781                 return OP_LOADR4_MEMBASE;
13782         case CEE_LDIND_R8:
13783                 return OP_LOADR8_MEMBASE;
13784         default:
13785                 g_assert_not_reached ();
13786         }
13787
13788         return -1;
13789 }
13790
13791 static int
13792 stind_to_store_membase (int opcode)
13793 {
13794         switch (opcode) {
13795         case CEE_STIND_I1:
13796                 return OP_STOREI1_MEMBASE_REG;
13797         case CEE_STIND_I2:
13798                 return OP_STOREI2_MEMBASE_REG;
13799         case CEE_STIND_I4:
13800                 return OP_STOREI4_MEMBASE_REG;
13801         case CEE_STIND_I:
13802         case CEE_STIND_REF:
13803                 return OP_STORE_MEMBASE_REG;
13804         case CEE_STIND_I8:
13805                 return OP_STOREI8_MEMBASE_REG;
13806         case CEE_STIND_R4:
13807                 return OP_STORER4_MEMBASE_REG;
13808         case CEE_STIND_R8:
13809                 return OP_STORER8_MEMBASE_REG;
13810         default:
13811                 g_assert_not_reached ();
13812         }
13813
13814         return -1;
13815 }
13816
13817 int
13818 mono_load_membase_to_load_mem (int opcode)
13819 {
13820         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13821 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13822         switch (opcode) {
13823         case OP_LOAD_MEMBASE:
13824                 return OP_LOAD_MEM;
13825         case OP_LOADU1_MEMBASE:
13826                 return OP_LOADU1_MEM;
13827         case OP_LOADU2_MEMBASE:
13828                 return OP_LOADU2_MEM;
13829         case OP_LOADI4_MEMBASE:
13830                 return OP_LOADI4_MEM;
13831         case OP_LOADU4_MEMBASE:
13832                 return OP_LOADU4_MEM;
13833 #if SIZEOF_REGISTER == 8
13834         case OP_LOADI8_MEMBASE:
13835                 return OP_LOADI8_MEM;
13836 #endif
13837         }
13838 #endif
13839
13840         return -1;
13841 }
13842
13843 static inline int
13844 op_to_op_dest_membase (int store_opcode, int opcode)
13845 {
13846 #if defined(TARGET_X86)
13847         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13848                 return -1;
13849
13850         switch (opcode) {
13851         case OP_IADD:
13852                 return OP_X86_ADD_MEMBASE_REG;
13853         case OP_ISUB:
13854                 return OP_X86_SUB_MEMBASE_REG;
13855         case OP_IAND:
13856                 return OP_X86_AND_MEMBASE_REG;
13857         case OP_IOR:
13858                 return OP_X86_OR_MEMBASE_REG;
13859         case OP_IXOR:
13860                 return OP_X86_XOR_MEMBASE_REG;
13861         case OP_ADD_IMM:
13862         case OP_IADD_IMM:
13863                 return OP_X86_ADD_MEMBASE_IMM;
13864         case OP_SUB_IMM:
13865         case OP_ISUB_IMM:
13866                 return OP_X86_SUB_MEMBASE_IMM;
13867         case OP_AND_IMM:
13868         case OP_IAND_IMM:
13869                 return OP_X86_AND_MEMBASE_IMM;
13870         case OP_OR_IMM:
13871         case OP_IOR_IMM:
13872                 return OP_X86_OR_MEMBASE_IMM;
13873         case OP_XOR_IMM:
13874         case OP_IXOR_IMM:
13875                 return OP_X86_XOR_MEMBASE_IMM;
13876         case OP_MOVE:
13877                 return OP_NOP;
13878         }
13879 #endif
13880
13881 #if defined(TARGET_AMD64)
13882         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13883                 return -1;
13884
13885         switch (opcode) {
13886         case OP_IADD:
13887                 return OP_X86_ADD_MEMBASE_REG;
13888         case OP_ISUB:
13889                 return OP_X86_SUB_MEMBASE_REG;
13890         case OP_IAND:
13891                 return OP_X86_AND_MEMBASE_REG;
13892         case OP_IOR:
13893                 return OP_X86_OR_MEMBASE_REG;
13894         case OP_IXOR:
13895                 return OP_X86_XOR_MEMBASE_REG;
13896         case OP_IADD_IMM:
13897                 return OP_X86_ADD_MEMBASE_IMM;
13898         case OP_ISUB_IMM:
13899                 return OP_X86_SUB_MEMBASE_IMM;
13900         case OP_IAND_IMM:
13901                 return OP_X86_AND_MEMBASE_IMM;
13902         case OP_IOR_IMM:
13903                 return OP_X86_OR_MEMBASE_IMM;
13904         case OP_IXOR_IMM:
13905                 return OP_X86_XOR_MEMBASE_IMM;
13906         case OP_LADD:
13907                 return OP_AMD64_ADD_MEMBASE_REG;
13908         case OP_LSUB:
13909                 return OP_AMD64_SUB_MEMBASE_REG;
13910         case OP_LAND:
13911                 return OP_AMD64_AND_MEMBASE_REG;
13912         case OP_LOR:
13913                 return OP_AMD64_OR_MEMBASE_REG;
13914         case OP_LXOR:
13915                 return OP_AMD64_XOR_MEMBASE_REG;
13916         case OP_ADD_IMM:
13917         case OP_LADD_IMM:
13918                 return OP_AMD64_ADD_MEMBASE_IMM;
13919         case OP_SUB_IMM:
13920         case OP_LSUB_IMM:
13921                 return OP_AMD64_SUB_MEMBASE_IMM;
13922         case OP_AND_IMM:
13923         case OP_LAND_IMM:
13924                 return OP_AMD64_AND_MEMBASE_IMM;
13925         case OP_OR_IMM:
13926         case OP_LOR_IMM:
13927                 return OP_AMD64_OR_MEMBASE_IMM;
13928         case OP_XOR_IMM:
13929         case OP_LXOR_IMM:
13930                 return OP_AMD64_XOR_MEMBASE_IMM;
13931         case OP_MOVE:
13932                 return OP_NOP;
13933         }
13934 #endif
13935
13936         return -1;
13937 }
13938
13939 static inline int
13940 op_to_op_store_membase (int store_opcode, int opcode)
13941 {
13942 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13943         switch (opcode) {
13944         case OP_ICEQ:
13945                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13946                         return OP_X86_SETEQ_MEMBASE;
13947         case OP_CNE:
13948                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13949                         return OP_X86_SETNE_MEMBASE;
13950         }
13951 #endif
13952
13953         return -1;
13954 }
13955
13956 static inline int
13957 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13958 {
13959 #ifdef TARGET_X86
13960         /* FIXME: This has sign extension issues */
13961         /*
13962         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13963                 return OP_X86_COMPARE_MEMBASE8_IMM;
13964         */
13965
13966         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13967                 return -1;
13968
13969         switch (opcode) {
13970         case OP_X86_PUSH:
13971                 return OP_X86_PUSH_MEMBASE;
13972         case OP_COMPARE_IMM:
13973         case OP_ICOMPARE_IMM:
13974                 return OP_X86_COMPARE_MEMBASE_IMM;
13975         case OP_COMPARE:
13976         case OP_ICOMPARE:
13977                 return OP_X86_COMPARE_MEMBASE_REG;
13978         }
13979 #endif
13980
13981 #ifdef TARGET_AMD64
13982         /* FIXME: This has sign extension issues */
13983         /*
13984         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13985                 return OP_X86_COMPARE_MEMBASE8_IMM;
13986         */
13987
13988         switch (opcode) {
13989         case OP_X86_PUSH:
13990                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13991                         return OP_X86_PUSH_MEMBASE;
13992                 break;
13993                 /* FIXME: This only works for 32 bit immediates
13994         case OP_COMPARE_IMM:
13995         case OP_LCOMPARE_IMM:
13996                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13997                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13998                 */
13999         case OP_ICOMPARE_IMM:
14000                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14001                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14002                 break;
14003         case OP_COMPARE:
14004         case OP_LCOMPARE:
14005                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14006                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14007                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14008                         return OP_AMD64_COMPARE_MEMBASE_REG;
14009                 break;
14010         case OP_ICOMPARE:
14011                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14012                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14013                 break;
14014         }
14015 #endif
14016
14017         return -1;
14018 }
14019
14020 static inline int
14021 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14022 {
14023 #ifdef TARGET_X86
14024         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14025                 return -1;
14026
14027         switch (opcode) {
14028         case OP_COMPARE:
14029         case OP_ICOMPARE:
14030                 return OP_X86_COMPARE_REG_MEMBASE;
14031         case OP_IADD:
14032                 return OP_X86_ADD_REG_MEMBASE;
14033         case OP_ISUB:
14034                 return OP_X86_SUB_REG_MEMBASE;
14035         case OP_IAND:
14036                 return OP_X86_AND_REG_MEMBASE;
14037         case OP_IOR:
14038                 return OP_X86_OR_REG_MEMBASE;
14039         case OP_IXOR:
14040                 return OP_X86_XOR_REG_MEMBASE;
14041         }
14042 #endif
14043
14044 #ifdef TARGET_AMD64
14045         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14046                 switch (opcode) {
14047                 case OP_ICOMPARE:
14048                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14049                 case OP_IADD:
14050                         return OP_X86_ADD_REG_MEMBASE;
14051                 case OP_ISUB:
14052                         return OP_X86_SUB_REG_MEMBASE;
14053                 case OP_IAND:
14054                         return OP_X86_AND_REG_MEMBASE;
14055                 case OP_IOR:
14056                         return OP_X86_OR_REG_MEMBASE;
14057                 case OP_IXOR:
14058                         return OP_X86_XOR_REG_MEMBASE;
14059                 }
14060         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14061                 switch (opcode) {
14062                 case OP_COMPARE:
14063                 case OP_LCOMPARE:
14064                         return OP_AMD64_COMPARE_REG_MEMBASE;
14065                 case OP_LADD:
14066                         return OP_AMD64_ADD_REG_MEMBASE;
14067                 case OP_LSUB:
14068                         return OP_AMD64_SUB_REG_MEMBASE;
14069                 case OP_LAND:
14070                         return OP_AMD64_AND_REG_MEMBASE;
14071                 case OP_LOR:
14072                         return OP_AMD64_OR_REG_MEMBASE;
14073                 case OP_LXOR:
14074                         return OP_AMD64_XOR_REG_MEMBASE;
14075                 }
14076         }
14077 #endif
14078
14079         return -1;
14080 }
14081
14082 int
14083 mono_op_to_op_imm_noemul (int opcode)
14084 {
14085         switch (opcode) {
14086 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14087         case OP_LSHR:
14088         case OP_LSHL:
14089         case OP_LSHR_UN:
14090                 return -1;
14091 #endif
14092 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14093         case OP_IDIV:
14094         case OP_IDIV_UN:
14095         case OP_IREM:
14096         case OP_IREM_UN:
14097                 return -1;
14098 #endif
14099 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14100         case OP_IMUL:
14101                 return -1;
14102 #endif
14103         default:
14104                 return mono_op_to_op_imm (opcode);
14105         }
14106 }
14107
14108 /**
14109  * mono_handle_global_vregs:
14110  *
14111  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14112  * for them.
14113  */
14114 void
14115 mono_handle_global_vregs (MonoCompile *cfg)
14116 {
14117         gint32 *vreg_to_bb;
14118         MonoBasicBlock *bb;
14119         int i, pos;
14120
14121         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14122
14123 #ifdef MONO_ARCH_SIMD_INTRINSICS
14124         if (cfg->uses_simd_intrinsics)
14125                 mono_simd_simplify_indirection (cfg);
14126 #endif
14127
14128         /* Find local vregs used in more than one bb */
14129         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14130                 MonoInst *ins = bb->code;
14131                 int block_num = bb->block_num;
14132
14133                 if (cfg->verbose_level > 2)
14134                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14135
14136                 cfg->cbb = bb;
14137                 for (; ins; ins = ins->next) {
14138                         const char *spec = INS_INFO (ins->opcode);
14139                         int regtype = 0, regindex;
14140                         gint32 prev_bb;
14141
14142                         if (G_UNLIKELY (cfg->verbose_level > 2))
14143                                 mono_print_ins (ins);
14144
14145                         g_assert (ins->opcode >= MONO_CEE_LAST);
14146
14147                         for (regindex = 0; regindex < 4; regindex ++) {
14148                                 int vreg = 0;
14149
14150                                 if (regindex == 0) {
14151                                         regtype = spec [MONO_INST_DEST];
14152                                         if (regtype == ' ')
14153                                                 continue;
14154                                         vreg = ins->dreg;
14155                                 } else if (regindex == 1) {
14156                                         regtype = spec [MONO_INST_SRC1];
14157                                         if (regtype == ' ')
14158                                                 continue;
14159                                         vreg = ins->sreg1;
14160                                 } else if (regindex == 2) {
14161                                         regtype = spec [MONO_INST_SRC2];
14162                                         if (regtype == ' ')
14163                                                 continue;
14164                                         vreg = ins->sreg2;
14165                                 } else if (regindex == 3) {
14166                                         regtype = spec [MONO_INST_SRC3];
14167                                         if (regtype == ' ')
14168                                                 continue;
14169                                         vreg = ins->sreg3;
14170                                 }
14171
14172 #if SIZEOF_REGISTER == 4
14173                                 /* In the LLVM case, the long opcodes are not decomposed */
14174                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14175                                         /*
14176                                          * Since some instructions reference the original long vreg,
14177                                          * and some reference the two component vregs, it is quite hard
14178                                          * to determine when it needs to be global. So be conservative.
14179                                          */
14180                                         if (!get_vreg_to_inst (cfg, vreg)) {
14181                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14182
14183                                                 if (cfg->verbose_level > 2)
14184                                                         printf ("LONG VREG R%d made global.\n", vreg);
14185                                         }
14186
14187                                         /*
14188                                          * Make the component vregs volatile since the optimizations can
14189                                          * get confused otherwise.
14190                                          */
14191                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14192                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14193                                 }
14194 #endif
14195
14196                                 g_assert (vreg != -1);
14197
14198                                 prev_bb = vreg_to_bb [vreg];
14199                                 if (prev_bb == 0) {
14200                                         /* 0 is a valid block num */
14201                                         vreg_to_bb [vreg] = block_num + 1;
14202                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14203                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14204                                                 continue;
14205
14206                                         if (!get_vreg_to_inst (cfg, vreg)) {
14207                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14208                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14209
14210                                                 switch (regtype) {
14211                                                 case 'i':
14212                                                         if (vreg_is_ref (cfg, vreg))
14213                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14214                                                         else
14215                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14216                                                         break;
14217                                                 case 'l':
14218                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14219                                                         break;
14220                                                 case 'f':
14221                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14222                                                         break;
14223                                                 case 'v':
14224                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14225                                                         break;
14226                                                 default:
14227                                                         g_assert_not_reached ();
14228                                                 }
14229                                         }
14230
14231                                         /* Flag as having been used in more than one bb */
14232                                         vreg_to_bb [vreg] = -1;
14233                                 }
14234                         }
14235                 }
14236         }
14237
14238         /* If a variable is used in only one bblock, convert it into a local vreg */
14239         for (i = 0; i < cfg->num_varinfo; i++) {
14240                 MonoInst *var = cfg->varinfo [i];
14241                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14242
14243                 switch (var->type) {
14244                 case STACK_I4:
14245                 case STACK_OBJ:
14246                 case STACK_PTR:
14247                 case STACK_MP:
14248                 case STACK_VTYPE:
14249 #if SIZEOF_REGISTER == 8
14250                 case STACK_I8:
14251 #endif
14252 #if !defined(TARGET_X86)
14253                 /* Enabling this screws up the fp stack on x86 */
14254                 case STACK_R8:
14255 #endif
14256                         if (mono_arch_is_soft_float ())
14257                                 break;
14258
14259                         /*
14260                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14261                                 break;
14262                         */
14263
14264                         /* Arguments are implicitly global */
14265                         /* Putting R4 vars into registers doesn't work currently */
14266                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14267                         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) {
14268                                 /*
14269                                  * Make that the variable's liveness interval doesn't contain a call, since
14270                                  * that would cause the lvreg to be spilled, making the whole optimization
14271                                  * useless.
14272                                  */
14273                                 /* This is too slow for JIT compilation */
14274 #if 0
14275                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14276                                         MonoInst *ins;
14277                                         int def_index, call_index, ins_index;
14278                                         gboolean spilled = FALSE;
14279
14280                                         def_index = -1;
14281                                         call_index = -1;
14282                                         ins_index = 0;
14283                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14284                                                 const char *spec = INS_INFO (ins->opcode);
14285
14286                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14287                                                         def_index = ins_index;
14288
14289                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14290                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14291                                                         if (call_index > def_index) {
14292                                                                 spilled = TRUE;
14293                                                                 break;
14294                                                         }
14295                                                 }
14296
14297                                                 if (MONO_IS_CALL (ins))
14298                                                         call_index = ins_index;
14299
14300                                                 ins_index ++;
14301                                         }
14302
14303                                         if (spilled)
14304                                                 break;
14305                                 }
14306 #endif
14307
14308                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14309                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14310                                 var->flags |= MONO_INST_IS_DEAD;
14311                                 cfg->vreg_to_inst [var->dreg] = NULL;
14312                         }
14313                         break;
14314                 }
14315         }
14316
14317         /*
14318          * Compress the varinfo and vars tables so the liveness computation is faster and
14319          * takes up less space.
14320          */
14321         pos = 0;
14322         for (i = 0; i < cfg->num_varinfo; ++i) {
14323                 MonoInst *var = cfg->varinfo [i];
14324                 if (pos < i && cfg->locals_start == i)
14325                         cfg->locals_start = pos;
14326                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14327                         if (pos < i) {
14328                                 cfg->varinfo [pos] = cfg->varinfo [i];
14329                                 cfg->varinfo [pos]->inst_c0 = pos;
14330                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14331                                 cfg->vars [pos].idx = pos;
14332 #if SIZEOF_REGISTER == 4
14333                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14334                                         /* Modify the two component vars too */
14335                                         MonoInst *var1;
14336
14337                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14338                                         var1->inst_c0 = pos;
14339                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14340                                         var1->inst_c0 = pos;
14341                                 }
14342 #endif
14343                         }
14344                         pos ++;
14345                 }
14346         }
14347         cfg->num_varinfo = pos;
14348         if (cfg->locals_start > cfg->num_varinfo)
14349                 cfg->locals_start = cfg->num_varinfo;
14350 }
14351
14352 /*
14353  * mono_allocate_gsharedvt_vars:
14354  *
14355  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14356  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14357  */
14358 void
14359 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14360 {
14361         int i;
14362
14363         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14364
14365         for (i = 0; i < cfg->num_varinfo; ++i) {
14366                 MonoInst *ins = cfg->varinfo [i];
14367                 int idx;
14368
14369                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14370                         if (i >= cfg->locals_start) {
14371                                 /* Local */
14372                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14373                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14374                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14375                                 ins->inst_imm = idx;
14376                         } else {
14377                                 /* Arg */
14378                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14379                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14380                         }
14381                 }
14382         }
14383 }
14384
14385 /**
14386  * mono_spill_global_vars:
14387  *
14388  *   Generate spill code for variables which are not allocated to registers,
14389  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14390  * code is generated which could be optimized by the local optimization passes.
14391  */
14392 void
14393 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14394 {
14395         MonoBasicBlock *bb;
14396         char spec2 [16];
14397         int orig_next_vreg;
14398         guint32 *vreg_to_lvreg;
14399         guint32 *lvregs;
14400         guint32 i, lvregs_len;
14401         gboolean dest_has_lvreg = FALSE;
14402         MonoStackType stacktypes [128];
14403         MonoInst **live_range_start, **live_range_end;
14404         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14405
14406         *need_local_opts = FALSE;
14407
14408         memset (spec2, 0, sizeof (spec2));
14409
14410         /* FIXME: Move this function to mini.c */
14411         stacktypes ['i'] = STACK_PTR;
14412         stacktypes ['l'] = STACK_I8;
14413         stacktypes ['f'] = STACK_R8;
14414 #ifdef MONO_ARCH_SIMD_INTRINSICS
14415         stacktypes ['x'] = STACK_VTYPE;
14416 #endif
14417
14418 #if SIZEOF_REGISTER == 4
14419         /* Create MonoInsts for longs */
14420         for (i = 0; i < cfg->num_varinfo; i++) {
14421                 MonoInst *ins = cfg->varinfo [i];
14422
14423                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14424                         switch (ins->type) {
14425                         case STACK_R8:
14426                         case STACK_I8: {
14427                                 MonoInst *tree;
14428
14429                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14430                                         break;
14431
14432                                 g_assert (ins->opcode == OP_REGOFFSET);
14433
14434                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14435                                 g_assert (tree);
14436                                 tree->opcode = OP_REGOFFSET;
14437                                 tree->inst_basereg = ins->inst_basereg;
14438                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14439
14440                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14441                                 g_assert (tree);
14442                                 tree->opcode = OP_REGOFFSET;
14443                                 tree->inst_basereg = ins->inst_basereg;
14444                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14445                                 break;
14446                         }
14447                         default:
14448                                 break;
14449                         }
14450                 }
14451         }
14452 #endif
14453
14454         if (cfg->compute_gc_maps) {
14455                 /* registers need liveness info even for !non refs */
14456                 for (i = 0; i < cfg->num_varinfo; i++) {
14457                         MonoInst *ins = cfg->varinfo [i];
14458
14459                         if (ins->opcode == OP_REGVAR)
14460                                 ins->flags |= MONO_INST_GC_TRACK;
14461                 }
14462         }
14463
14464         /* FIXME: widening and truncation */
14465
14466         /*
14467          * As an optimization, when a variable allocated to the stack is first loaded into
14468          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14469          * the variable again.
14470          */
14471         orig_next_vreg = cfg->next_vreg;
14472         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14473         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14474         lvregs_len = 0;
14475
14476         /*
14477          * These arrays contain the first and last instructions accessing a given
14478          * variable.
14479          * Since we emit bblocks in the same order we process them here, and we
14480          * don't split live ranges, these will precisely describe the live range of
14481          * the variable, i.e. the instruction range where a valid value can be found
14482          * in the variables location.
14483          * The live range is computed using the liveness info computed by the liveness pass.
14484          * We can't use vmv->range, since that is an abstract live range, and we need
14485          * one which is instruction precise.
14486          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14487          */
14488         /* FIXME: Only do this if debugging info is requested */
14489         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14490         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14491         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14492         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14493
14494         /* Add spill loads/stores */
14495         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14496                 MonoInst *ins;
14497
14498                 if (cfg->verbose_level > 2)
14499                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14500
14501                 /* Clear vreg_to_lvreg array */
14502                 for (i = 0; i < lvregs_len; i++)
14503                         vreg_to_lvreg [lvregs [i]] = 0;
14504                 lvregs_len = 0;
14505
14506                 cfg->cbb = bb;
14507                 MONO_BB_FOR_EACH_INS (bb, ins) {
14508                         const char *spec = INS_INFO (ins->opcode);
14509                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14510                         gboolean store, no_lvreg;
14511                         int sregs [MONO_MAX_SRC_REGS];
14512
14513                         if (G_UNLIKELY (cfg->verbose_level > 2))
14514                                 mono_print_ins (ins);
14515
14516                         if (ins->opcode == OP_NOP)
14517                                 continue;
14518
14519                         /*
14520                          * We handle LDADDR here as well, since it can only be decomposed
14521                          * when variable addresses are known.
14522                          */
14523                         if (ins->opcode == OP_LDADDR) {
14524                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14525
14526                                 if (var->opcode == OP_VTARG_ADDR) {
14527                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14528                                         MonoInst *vtaddr = var->inst_left;
14529                                         if (vtaddr->opcode == OP_REGVAR) {
14530                                                 ins->opcode = OP_MOVE;
14531                                                 ins->sreg1 = vtaddr->dreg;
14532                                         }
14533                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14534                                                 ins->opcode = OP_LOAD_MEMBASE;
14535                                                 ins->inst_basereg = vtaddr->inst_basereg;
14536                                                 ins->inst_offset = vtaddr->inst_offset;
14537                                         } else
14538                                                 NOT_IMPLEMENTED;
14539                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14540                                         /* gsharedvt arg passed by ref */
14541                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14542
14543                                         ins->opcode = OP_LOAD_MEMBASE;
14544                                         ins->inst_basereg = var->inst_basereg;
14545                                         ins->inst_offset = var->inst_offset;
14546                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14547                                         MonoInst *load, *load2, *load3;
14548                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14549                                         int reg1, reg2, reg3;
14550                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14551                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14552
14553                                         /*
14554                                          * gsharedvt local.
14555                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14556                                          */
14557
14558                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14559
14560                                         g_assert (info_var);
14561                                         g_assert (locals_var);
14562
14563                                         /* Mark the instruction used to compute the locals var as used */
14564                                         cfg->gsharedvt_locals_var_ins = NULL;
14565
14566                                         /* Load the offset */
14567                                         if (info_var->opcode == OP_REGOFFSET) {
14568                                                 reg1 = alloc_ireg (cfg);
14569                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14570                                         } else if (info_var->opcode == OP_REGVAR) {
14571                                                 load = NULL;
14572                                                 reg1 = info_var->dreg;
14573                                         } else {
14574                                                 g_assert_not_reached ();
14575                                         }
14576                                         reg2 = alloc_ireg (cfg);
14577                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14578                                         /* Load the locals area address */
14579                                         reg3 = alloc_ireg (cfg);
14580                                         if (locals_var->opcode == OP_REGOFFSET) {
14581                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14582                                         } else if (locals_var->opcode == OP_REGVAR) {
14583                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14584                                         } else {
14585                                                 g_assert_not_reached ();
14586                                         }
14587                                         /* Compute the address */
14588                                         ins->opcode = OP_PADD;
14589                                         ins->sreg1 = reg3;
14590                                         ins->sreg2 = reg2;
14591
14592                                         mono_bblock_insert_before_ins (bb, ins, load3);
14593                                         mono_bblock_insert_before_ins (bb, load3, load2);
14594                                         if (load)
14595                                                 mono_bblock_insert_before_ins (bb, load2, load);
14596                                 } else {
14597                                         g_assert (var->opcode == OP_REGOFFSET);
14598
14599                                         ins->opcode = OP_ADD_IMM;
14600                                         ins->sreg1 = var->inst_basereg;
14601                                         ins->inst_imm = var->inst_offset;
14602                                 }
14603
14604                                 *need_local_opts = TRUE;
14605                                 spec = INS_INFO (ins->opcode);
14606                         }
14607
14608                         if (ins->opcode < MONO_CEE_LAST) {
14609                                 mono_print_ins (ins);
14610                                 g_assert_not_reached ();
14611                         }
14612
14613                         /*
14614                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14615                          * src register.
14616                          * FIXME:
14617                          */
14618                         if (MONO_IS_STORE_MEMBASE (ins)) {
14619                                 tmp_reg = ins->dreg;
14620                                 ins->dreg = ins->sreg2;
14621                                 ins->sreg2 = tmp_reg;
14622                                 store = TRUE;
14623
14624                                 spec2 [MONO_INST_DEST] = ' ';
14625                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14626                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14627                                 spec2 [MONO_INST_SRC3] = ' ';
14628                                 spec = spec2;
14629                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14630                                 g_assert_not_reached ();
14631                         else
14632                                 store = FALSE;
14633                         no_lvreg = FALSE;
14634
14635                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14636                                 printf ("\t %.3s %d", spec, ins->dreg);
14637                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14638                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14639                                         printf (" %d", sregs [srcindex]);
14640                                 printf ("\n");
14641                         }
14642
14643                         /***************/
14644                         /*    DREG     */
14645                         /***************/
14646                         regtype = spec [MONO_INST_DEST];
14647                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14648                         prev_dreg = -1;
14649
14650                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14651                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14652                                 MonoInst *store_ins;
14653                                 int store_opcode;
14654                                 MonoInst *def_ins = ins;
14655                                 int dreg = ins->dreg; /* The original vreg */
14656
14657                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14658
14659                                 if (var->opcode == OP_REGVAR) {
14660                                         ins->dreg = var->dreg;
14661                                 } 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)) {
14662                                         /*
14663                                          * Instead of emitting a load+store, use a _membase opcode.
14664                                          */
14665                                         g_assert (var->opcode == OP_REGOFFSET);
14666                                         if (ins->opcode == OP_MOVE) {
14667                                                 NULLIFY_INS (ins);
14668                                                 def_ins = NULL;
14669                                         } else {
14670                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14671                                                 ins->inst_basereg = var->inst_basereg;
14672                                                 ins->inst_offset = var->inst_offset;
14673                                                 ins->dreg = -1;
14674                                         }
14675                                         spec = INS_INFO (ins->opcode);
14676                                 } else {
14677                                         guint32 lvreg;
14678
14679                                         g_assert (var->opcode == OP_REGOFFSET);
14680
14681                                         prev_dreg = ins->dreg;
14682
14683                                         /* Invalidate any previous lvreg for this vreg */
14684                                         vreg_to_lvreg [ins->dreg] = 0;
14685
14686                                         lvreg = 0;
14687
14688                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14689                                                 regtype = 'l';
14690                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14691                                         }
14692
14693                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14694
14695 #if SIZEOF_REGISTER != 8
14696                                         if (regtype == 'l') {
14697                                                 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));
14698                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14699                                                 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));
14700                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14701                                                 def_ins = store_ins;
14702                                         }
14703                                         else
14704 #endif
14705                                         {
14706                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14707
14708                                                 /* Try to fuse the store into the instruction itself */
14709                                                 /* FIXME: Add more instructions */
14710                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14711                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14712                                                         ins->inst_imm = ins->inst_c0;
14713                                                         ins->inst_destbasereg = var->inst_basereg;
14714                                                         ins->inst_offset = var->inst_offset;
14715                                                         spec = INS_INFO (ins->opcode);
14716                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14717                                                         ins->opcode = store_opcode;
14718                                                         ins->inst_destbasereg = var->inst_basereg;
14719                                                         ins->inst_offset = var->inst_offset;
14720
14721                                                         no_lvreg = TRUE;
14722
14723                                                         tmp_reg = ins->dreg;
14724                                                         ins->dreg = ins->sreg2;
14725                                                         ins->sreg2 = tmp_reg;
14726                                                         store = TRUE;
14727
14728                                                         spec2 [MONO_INST_DEST] = ' ';
14729                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14730                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14731                                                         spec2 [MONO_INST_SRC3] = ' ';
14732                                                         spec = spec2;
14733                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14734                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14735                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14736                                                         ins->dreg = -1;
14737                                                         ins->inst_basereg = var->inst_basereg;
14738                                                         ins->inst_offset = var->inst_offset;
14739                                                         spec = INS_INFO (ins->opcode);
14740                                                 } else {
14741                                                         /* printf ("INS: "); mono_print_ins (ins); */
14742                                                         /* Create a store instruction */
14743                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14744
14745                                                         /* Insert it after the instruction */
14746                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14747
14748                                                         def_ins = store_ins;
14749
14750                                                         /*
14751                                                          * We can't assign ins->dreg to var->dreg here, since the
14752                                                          * sregs could use it. So set a flag, and do it after
14753                                                          * the sregs.
14754                                                          */
14755                                                         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)))
14756                                                                 dest_has_lvreg = TRUE;
14757                                                 }
14758                                         }
14759                                 }
14760
14761                                 if (def_ins && !live_range_start [dreg]) {
14762                                         live_range_start [dreg] = def_ins;
14763                                         live_range_start_bb [dreg] = bb;
14764                                 }
14765
14766                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14767                                         MonoInst *tmp;
14768
14769                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14770                                         tmp->inst_c1 = dreg;
14771                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14772                                 }
14773                         }
14774
14775                         /************/
14776                         /*  SREGS   */
14777                         /************/
14778                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14779                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14780                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14781                                 sreg = sregs [srcindex];
14782
14783                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14784                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14785                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14786                                         MonoInst *use_ins = ins;
14787                                         MonoInst *load_ins;
14788                                         guint32 load_opcode;
14789
14790                                         if (var->opcode == OP_REGVAR) {
14791                                                 sregs [srcindex] = var->dreg;
14792                                                 //mono_inst_set_src_registers (ins, sregs);
14793                                                 live_range_end [sreg] = use_ins;
14794                                                 live_range_end_bb [sreg] = bb;
14795
14796                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14797                                                         MonoInst *tmp;
14798
14799                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14800                                                         /* var->dreg is a hreg */
14801                                                         tmp->inst_c1 = sreg;
14802                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14803                                                 }
14804
14805                                                 continue;
14806                                         }
14807
14808                                         g_assert (var->opcode == OP_REGOFFSET);
14809
14810                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14811
14812                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14813
14814                                         if (vreg_to_lvreg [sreg]) {
14815                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14816
14817                                                 /* The variable is already loaded to an lvreg */
14818                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14819                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14820                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14821                                                 //mono_inst_set_src_registers (ins, sregs);
14822                                                 continue;
14823                                         }
14824
14825                                         /* Try to fuse the load into the instruction */
14826                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14827                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14828                                                 sregs [0] = var->inst_basereg;
14829                                                 //mono_inst_set_src_registers (ins, sregs);
14830                                                 ins->inst_offset = var->inst_offset;
14831                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14832                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14833                                                 sregs [1] = var->inst_basereg;
14834                                                 //mono_inst_set_src_registers (ins, sregs);
14835                                                 ins->inst_offset = var->inst_offset;
14836                                         } else {
14837                                                 if (MONO_IS_REAL_MOVE (ins)) {
14838                                                         ins->opcode = OP_NOP;
14839                                                         sreg = ins->dreg;
14840                                                 } else {
14841                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14842
14843                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14844
14845                                                         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) {
14846                                                                 if (var->dreg == prev_dreg) {
14847                                                                         /*
14848                                                                          * sreg refers to the value loaded by the load
14849                                                                          * emitted below, but we need to use ins->dreg
14850                                                                          * since it refers to the store emitted earlier.
14851                                                                          */
14852                                                                         sreg = ins->dreg;
14853                                                                 }
14854                                                                 g_assert (sreg != -1);
14855                                                                 vreg_to_lvreg [var->dreg] = sreg;
14856                                                                 g_assert (lvregs_len < 1024);
14857                                                                 lvregs [lvregs_len ++] = var->dreg;
14858                                                         }
14859                                                 }
14860
14861                                                 sregs [srcindex] = sreg;
14862                                                 //mono_inst_set_src_registers (ins, sregs);
14863
14864 #if SIZEOF_REGISTER != 8
14865                                                 if (regtype == 'l') {
14866                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14867                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14868                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14869                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14870                                                         use_ins = load_ins;
14871                                                 }
14872                                                 else
14873 #endif
14874                                                 {
14875 #if SIZEOF_REGISTER == 4
14876                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14877 #endif
14878                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14879                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14880                                                         use_ins = load_ins;
14881                                                 }
14882                                         }
14883
14884                                         if (var->dreg < orig_next_vreg) {
14885                                                 live_range_end [var->dreg] = use_ins;
14886                                                 live_range_end_bb [var->dreg] = bb;
14887                                         }
14888
14889                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14890                                                 MonoInst *tmp;
14891
14892                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14893                                                 tmp->inst_c1 = var->dreg;
14894                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14895                                         }
14896                                 }
14897                         }
14898                         mono_inst_set_src_registers (ins, sregs);
14899
14900                         if (dest_has_lvreg) {
14901                                 g_assert (ins->dreg != -1);
14902                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14903                                 g_assert (lvregs_len < 1024);
14904                                 lvregs [lvregs_len ++] = prev_dreg;
14905                                 dest_has_lvreg = FALSE;
14906                         }
14907
14908                         if (store) {
14909                                 tmp_reg = ins->dreg;
14910                                 ins->dreg = ins->sreg2;
14911                                 ins->sreg2 = tmp_reg;
14912                         }
14913
14914                         if (MONO_IS_CALL (ins)) {
14915                                 /* Clear vreg_to_lvreg array */
14916                                 for (i = 0; i < lvregs_len; i++)
14917                                         vreg_to_lvreg [lvregs [i]] = 0;
14918                                 lvregs_len = 0;
14919                         } else if (ins->opcode == OP_NOP) {
14920                                 ins->dreg = -1;
14921                                 MONO_INST_NULLIFY_SREGS (ins);
14922                         }
14923
14924                         if (cfg->verbose_level > 2)
14925                                 mono_print_ins_index (1, ins);
14926                 }
14927
14928                 /* Extend the live range based on the liveness info */
14929                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14930                         for (i = 0; i < cfg->num_varinfo; i ++) {
14931                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14932
14933                                 if (vreg_is_volatile (cfg, vi->vreg))
14934                                         /* The liveness info is incomplete */
14935                                         continue;
14936
14937                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14938                                         /* Live from at least the first ins of this bb */
14939                                         live_range_start [vi->vreg] = bb->code;
14940                                         live_range_start_bb [vi->vreg] = bb;
14941                                 }
14942
14943                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14944                                         /* Live at least until the last ins of this bb */
14945                                         live_range_end [vi->vreg] = bb->last_ins;
14946                                         live_range_end_bb [vi->vreg] = bb;
14947                                 }
14948                         }
14949                 }
14950         }
14951
14952         /*
14953          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14954          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14955          */
14956         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14957                 for (i = 0; i < cfg->num_varinfo; ++i) {
14958                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14959                         MonoInst *ins;
14960
14961                         if (live_range_start [vreg]) {
14962                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14963                                 ins->inst_c0 = i;
14964                                 ins->inst_c1 = vreg;
14965                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14966                         }
14967                         if (live_range_end [vreg]) {
14968                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14969                                 ins->inst_c0 = i;
14970                                 ins->inst_c1 = vreg;
14971                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14972                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14973                                 else
14974                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14975                         }
14976                 }
14977         }
14978
14979         if (cfg->gsharedvt_locals_var_ins) {
14980                 /* Nullify if unused */
14981                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14982                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14983         }
14984
14985         g_free (live_range_start);
14986         g_free (live_range_end);
14987         g_free (live_range_start_bb);
14988         g_free (live_range_end_bb);
14989 }
14990
14991 static void
14992 mono_decompose_typecheck (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
14993 {
14994         MonoInst *ret, *move, *source;
14995         MonoClass *klass = ins->klass;
14996         int context_used = mini_class_check_context_used (cfg, klass);
14997         int is_isinst = ins->opcode == OP_ISINST;
14998         g_assert (is_isinst || ins->opcode == OP_CASTCLASS);
14999         source = get_vreg_to_inst (cfg, ins->sreg1);
15000         if (!source || source == (MonoInst *) -1)
15001                 source = mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, ins->sreg1);
15002         g_assert (source && source != (MonoInst *) -1);
15003
15004         MonoBasicBlock *first_bb;
15005         NEW_BBLOCK (cfg, first_bb);
15006         cfg->cbb = first_bb;
15007
15008         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
15009                 if (is_isinst)
15010                         ret = emit_isinst_with_cache_nonshared (cfg, source, klass);
15011                 else
15012                         ret = emit_castclass_with_cache_nonshared (cfg, source, klass);
15013         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
15014                 MonoInst *iargs [1];
15015                 int costs;
15016
15017                 iargs [0] = source;
15018                 if (is_isinst) {
15019                         MonoMethod *wrapper = mono_marshal_get_isinst (klass);
15020                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15021                 } else {
15022                         MonoMethod *wrapper = mono_marshal_get_castclass (klass);
15023                         save_cast_details (cfg, klass, source->dreg, TRUE);
15024                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15025                         reset_cast_details (cfg);
15026                 }
15027                 g_assert (costs > 0);
15028                 ret = iargs [0];
15029         } else {
15030                 if (is_isinst)
15031                         ret = handle_isinst (cfg, klass, source, context_used);
15032                 else
15033                         ret = handle_castclass (cfg, klass, source, context_used);
15034         }
15035         EMIT_NEW_UNALU (cfg, move, OP_MOVE, ins->dreg, ret->dreg);
15036
15037         g_assert (cfg->cbb->code || first_bb->code);
15038         MonoInst *prev = ins->prev;
15039         mono_replace_ins (cfg, bb, ins, &prev, first_bb, cfg->cbb);
15040 }
15041
15042 void
15043 mono_decompose_typechecks (MonoCompile *cfg)
15044 {
15045         for (MonoBasicBlock *bb = cfg->bb_entry; bb; bb = bb->next_bb) {
15046                 MonoInst *ins;
15047                 MONO_BB_FOR_EACH_INS (bb, ins) {
15048                         switch (ins->opcode) {
15049                         case OP_ISINST:
15050                         case OP_CASTCLASS:
15051                                 mono_decompose_typecheck (cfg, bb, ins);
15052                                 break;
15053                         }
15054                 }
15055         }
15056 }
15057
15058
15059 /**
15060  * FIXME:
15061  * - use 'iadd' instead of 'int_add'
15062  * - handling ovf opcodes: decompose in method_to_ir.
15063  * - unify iregs/fregs
15064  *   -> partly done, the missing parts are:
15065  *   - a more complete unification would involve unifying the hregs as well, so
15066  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15067  *     would no longer map to the machine hregs, so the code generators would need to
15068  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15069  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15070  *     fp/non-fp branches speeds it up by about 15%.
15071  * - use sext/zext opcodes instead of shifts
15072  * - add OP_ICALL
15073  * - get rid of TEMPLOADs if possible and use vregs instead
15074  * - clean up usage of OP_P/OP_ opcodes
15075  * - cleanup usage of DUMMY_USE
15076  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15077  *   stack
15078  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15079  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15080  * - make sure handle_stack_args () is called before the branch is emitted
15081  * - when the new IR is done, get rid of all unused stuff
15082  * - COMPARE/BEQ as separate instructions or unify them ?
15083  *   - keeping them separate allows specialized compare instructions like
15084  *     compare_imm, compare_membase
15085  *   - most back ends unify fp compare+branch, fp compare+ceq
15086  * - integrate mono_save_args into inline_method
15087  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15088  * - handle long shift opts on 32 bit platforms somehow: they require
15089  *   3 sregs (2 for arg1 and 1 for arg2)
15090  * - make byref a 'normal' type.
15091  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15092  *   variable if needed.
15093  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15094  *   like inline_method.
15095  * - remove inlining restrictions
15096  * - fix LNEG and enable cfold of INEG
15097  * - generalize x86 optimizations like ldelema as a peephole optimization
15098  * - add store_mem_imm for amd64
15099  * - optimize the loading of the interruption flag in the managed->native wrappers
15100  * - avoid special handling of OP_NOP in passes
15101  * - move code inserting instructions into one function/macro.
15102  * - try a coalescing phase after liveness analysis
15103  * - add float -> vreg conversion + local optimizations on !x86
15104  * - figure out how to handle decomposed branches during optimizations, ie.
15105  *   compare+branch, op_jump_table+op_br etc.
15106  * - promote RuntimeXHandles to vregs
15107  * - vtype cleanups:
15108  *   - add a NEW_VARLOADA_VREG macro
15109  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15110  *   accessing vtype fields.
15111  * - get rid of I8CONST on 64 bit platforms
15112  * - dealing with the increase in code size due to branches created during opcode
15113  *   decomposition:
15114  *   - use extended basic blocks
15115  *     - all parts of the JIT
15116  *     - handle_global_vregs () && local regalloc
15117  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15118  * - sources of increase in code size:
15119  *   - vtypes
15120  *   - long compares
15121  *   - isinst and castclass
15122  *   - lvregs not allocated to global registers even if used multiple times
15123  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15124  *   meaningful.
15125  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15126  * - add all micro optimizations from the old JIT
15127  * - put tree optimizations into the deadce pass
15128  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15129  *   specific function.
15130  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15131  *   fcompare + branchCC.
15132  * - create a helper function for allocating a stack slot, taking into account
15133  *   MONO_CFG_HAS_SPILLUP.
15134  * - merge r68207.
15135  * - merge the ia64 switch changes.
15136  * - optimize mono_regstate2_alloc_int/float.
15137  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15138  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15139  *   parts of the tree could be separated by other instructions, killing the tree
15140  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15141  *   instructions if the result of the load is used multiple times ?
15142  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15143  * - LAST MERGE: 108395.
15144  * - when returning vtypes in registers, generate IR and append it to the end of the
15145  *   last bb instead of doing it in the epilog.
15146  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15147  */
15148
15149 /*
15150
15151 NOTES
15152 -----
15153
15154 - When to decompose opcodes:
15155   - earlier: this makes some optimizations hard to implement, since the low level IR
15156   no longer contains the neccessary information. But it is easier to do.
15157   - later: harder to implement, enables more optimizations.
15158 - Branches inside bblocks:
15159   - created when decomposing complex opcodes.
15160     - branches to another bblock: harmless, but not tracked by the branch
15161       optimizations, so need to branch to a label at the start of the bblock.
15162     - branches to inside the same bblock: very problematic, trips up the local
15163       reg allocator. Can be fixed by spitting the current bblock, but that is a
15164       complex operation, since some local vregs can become global vregs etc.
15165 - Local/global vregs:
15166   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15167     local register allocator.
15168   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15169     structure, created by mono_create_var (). Assigned to hregs or the stack by
15170     the global register allocator.
15171 - When to do optimizations like alu->alu_imm:
15172   - earlier -> saves work later on since the IR will be smaller/simpler
15173   - later -> can work on more instructions
15174 - Handling of valuetypes:
15175   - When a vtype is pushed on the stack, a new temporary is created, an
15176     instruction computing its address (LDADDR) is emitted and pushed on
15177     the stack. Need to optimize cases when the vtype is used immediately as in
15178     argument passing, stloc etc.
15179 - Instead of the to_end stuff in the old JIT, simply call the function handling
15180   the values on the stack before emitting the last instruction of the bb.
15181 */
15182
15183 #endif /* DISABLE_JIT */