mono/mini/method-to-ir.c

   1 /*
   2  * method-to-ir.c: Convert CIL to the JIT internal representation
   3  *
   4  * Author:
   5  *   Paolo Molaro (lupus@ximian.com)
   6  *   Dietmar Maurer (dietmar@ximian.com)
   7  *
   8  * (C) 2002 Ximian, Inc.
   9  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  10  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  11  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  12  */
  13
  14 #include <config.h>
  15
  16 #ifndef DISABLE_JIT
  17
  18 #include <signal.h>
  19
  20 #ifdef HAVE_UNISTD_H
  21 #include <unistd.h>
  22 #endif
  23
  24 #include <math.h>
  25 #include <string.h>
  26 #include <ctype.h>
  27
  28 #ifdef HAVE_SYS_TIME_H
  29 #include <sys/time.h>
  30 #endif
  31
  32 #ifdef HAVE_ALLOCA_H
  33 #include <alloca.h>
  34 #endif
  35
  36 #include <mono/utils/memcheck.h>
  37 #include "mini.h"
  38 #include <mono/metadata/abi-details.h>
  39 #include <mono/metadata/assembly.h>
  40 #include <mono/metadata/attrdefs.h>
  41 #include <mono/metadata/loader.h>
  42 #include <mono/metadata/tabledefs.h>
  43 #include <mono/metadata/class.h>
  44 #include <mono/metadata/object.h>
  45 #include <mono/metadata/exception.h>
  46 #include <mono/metadata/opcodes.h>
  47 #include <mono/metadata/mono-endian.h>
  48 #include <mono/metadata/tokentype.h>
  49 #include <mono/metadata/tabledefs.h>
  50 #include <mono/metadata/marshal.h>
  51 #include <mono/metadata/debug-helpers.h>
  52 #include <mono/metadata/mono-debug.h>
  53 #include <mono/metadata/mono-debug-debugger.h>
  54 #include <mono/metadata/gc-internals.h>
  55 #include <mono/metadata/security-manager.h>
  56 #include <mono/metadata/threads-types.h>
  57 #include <mono/metadata/security-core-clr.h>
  58 #include <mono/metadata/profiler-private.h>
  59 #include <mono/metadata/profiler.h>
  60 #include <mono/metadata/monitor.h>
  61 #include <mono/metadata/debug-mono-symfile.h>
  62 #include <mono/utils/mono-compiler.h>
  63 #include <mono/utils/mono-memory-model.h>
  64 #include <mono/utils/mono-error-internals.h>
  65 #include <mono/metadata/mono-basic-block.h>
  66 #include <mono/metadata/reflection-internals.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define METHOD_ACCESS_FAILURE(method, cmethod) do {                     \
  94                 method_access_failure ((cfg), (method), (cmethod));                     \
  95                 goto exception_exit;                                                                            \
  96         } while (0)
  97 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  98                 field_access_failure ((cfg), (method), (field));                        \
  99                 goto exception_exit;    \
 100         } while (0)
 101 #define GENERIC_SHARING_FAILURE(opcode) do {            \
 102                 if (cfg->gshared) {                                                                     \
 103                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 104                         goto exception_exit;    \
 105                 }                       \
 106         } while (0)
 107 #define GSHAREDVT_FAILURE(opcode) do {          \
 108         if (cfg->gsharedvt) {                                                                                           \
 109                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 110                 goto exception_exit;                                                                                    \
 111         }                                                                                                                                       \
 112         } while (0)
 113 #define OUT_OF_MEMORY_FAILURE do {      \
 114                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 115                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 116                 goto exception_exit;    \
 117         } while (0)
 118 #define DISABLE_AOT(cfg) do { \
 119                 if ((cfg)->verbose_level >= 2)                                            \
 120                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 121                 (cfg)->disable_aot = TRUE;                                                        \
 122         } while (0)
 123 #define LOAD_ERROR do { \
 124                 break_on_unverified ();                                                         \
 125                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 126                 goto exception_exit;                                                                    \
 127         } while (0)
 128
 129 #define TYPE_LOAD_ERROR(klass) do { \
 130                 cfg->exception_ptr = klass; \
 131                 LOAD_ERROR;                                     \
 132         } while (0)
 133
 134 #define CHECK_CFG_ERROR do {\
 135                 if (!mono_error_ok (&cfg->error)) { \
 136                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 137                         goto mono_error_exit; \
 138                 } \
 139         } while (0)
 140
 141 /* Determine whenever 'ins' represents a load of the 'this' argument */
 142 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 143
 144 static int ldind_to_load_membase (int opcode);
 145 static int stind_to_store_membase (int opcode);
 146
 147 int mono_op_to_op_imm (int opcode);
 148 int mono_op_to_op_imm_noemul (int opcode);
 149
 150 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 151
 152 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 153                                                   guchar *ip, guint real_offset, gboolean inline_always);
 154 static MonoInst*
 155 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 156
 157 /* helper methods signatures */
 158 static MonoMethodSignature *helper_sig_domain_get;
 159 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 160 static MonoMethodSignature *helper_sig_llvmonly_imt_thunk;
 161
 162
 163 /* type loading helpers */
 164 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, System.Runtime.CompilerServices, RuntimeHelpers)
 165 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, System.Diagnostics, DebuggableAttribute)
 166
 167 /*
 168  * Instruction metadata
 169  */
 170 #ifdef MINI_OP
 171 #undef MINI_OP
 172 #endif
 173 #ifdef MINI_OP3
 174 #undef MINI_OP3
 175 #endif
 176 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 177 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 178 #define NONE ' '
 179 #define IREG 'i'
 180 #define FREG 'f'
 181 #define VREG 'v'
 182 #define XREG 'x'
 183 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 184 #define LREG IREG
 185 #else
 186 #define LREG 'l'
 187 #endif
 188 /* keep in sync with the enum in mini.h */
 189 const char
 190 ins_info[] = {
 191 #include "mini-ops.h"
 192 };
 193 #undef MINI_OP
 194 #undef MINI_OP3
 195
 196 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 197 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 198 /*
 199  * This should contain the index of the last sreg + 1. This is not the same
 200  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 201  */
 202 const gint8 ins_sreg_counts[] = {
 203 #include "mini-ops.h"
 204 };
 205 #undef MINI_OP
 206 #undef MINI_OP3
 207
 208 #define MONO_INIT_VARINFO(vi,id) do { \
 209         (vi)->range.first_use.pos.bid = 0xffff; \
 210         (vi)->reg = -1; \
 211         (vi)->idx = (id); \
 212 } while (0)
 213
 214 guint32
 215 mono_alloc_ireg (MonoCompile *cfg)
 216 {
 217         return alloc_ireg (cfg);
 218 }
 219
 220 guint32
 221 mono_alloc_lreg (MonoCompile *cfg)
 222 {
 223         return alloc_lreg (cfg);
 224 }
 225
 226 guint32
 227 mono_alloc_freg (MonoCompile *cfg)
 228 {
 229         return alloc_freg (cfg);
 230 }
 231
 232 guint32
 233 mono_alloc_preg (MonoCompile *cfg)
 234 {
 235         return alloc_preg (cfg);
 236 }
 237
 238 guint32
 239 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 240 {
 241         return alloc_dreg (cfg, stack_type);
 242 }
 243
 244 /*
 245  * mono_alloc_ireg_ref:
 246  *
 247  *   Allocate an IREG, and mark it as holding a GC ref.
 248  */
 249 guint32
 250 mono_alloc_ireg_ref (MonoCompile *cfg)
 251 {
 252         return alloc_ireg_ref (cfg);
 253 }
 254
 255 /*
 256  * mono_alloc_ireg_mp:
 257  *
 258  *   Allocate an IREG, and mark it as holding a managed pointer.
 259  */
 260 guint32
 261 mono_alloc_ireg_mp (MonoCompile *cfg)
 262 {
 263         return alloc_ireg_mp (cfg);
 264 }
 265
 266 /*
 267  * mono_alloc_ireg_copy:
 268  *
 269  *   Allocate an IREG with the same GC type as VREG.
 270  */
 271 guint32
 272 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 273 {
 274         if (vreg_is_ref (cfg, vreg))
 275                 return alloc_ireg_ref (cfg);
 276         else if (vreg_is_mp (cfg, vreg))
 277                 return alloc_ireg_mp (cfg);
 278         else
 279                 return alloc_ireg (cfg);
 280 }
 281
 282 guint
 283 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 284 {
 285         if (type->byref)
 286                 return OP_MOVE;
 287
 288         type = mini_get_underlying_type (type);
 289 handle_enum:
 290         switch (type->type) {
 291         case MONO_TYPE_I1:
 292         case MONO_TYPE_U1:
 293                 return OP_MOVE;
 294         case MONO_TYPE_I2:
 295         case MONO_TYPE_U2:
 296                 return OP_MOVE;
 297         case MONO_TYPE_I4:
 298         case MONO_TYPE_U4:
 299                 return OP_MOVE;
 300         case MONO_TYPE_I:
 301         case MONO_TYPE_U:
 302         case MONO_TYPE_PTR:
 303         case MONO_TYPE_FNPTR:
 304                 return OP_MOVE;
 305         case MONO_TYPE_CLASS:
 306         case MONO_TYPE_STRING:
 307         case MONO_TYPE_OBJECT:
 308         case MONO_TYPE_SZARRAY:
 309         case MONO_TYPE_ARRAY:
 310                 return OP_MOVE;
 311         case MONO_TYPE_I8:
 312         case MONO_TYPE_U8:
 313 #if SIZEOF_REGISTER == 8
 314                 return OP_MOVE;
 315 #else
 316                 return OP_LMOVE;
 317 #endif
 318         case MONO_TYPE_R4:
 319                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 320         case MONO_TYPE_R8:
 321                 return OP_FMOVE;
 322         case MONO_TYPE_VALUETYPE:
 323                 if (type->data.klass->enumtype) {
 324                         type = mono_class_enum_basetype (type->data.klass);
 325                         goto handle_enum;
 326                 }
 327                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 328                         return OP_XMOVE;
 329                 return OP_VMOVE;
 330         case MONO_TYPE_TYPEDBYREF:
 331                 return OP_VMOVE;
 332         case MONO_TYPE_GENERICINST:
 333                 type = &type->data.generic_class->container_class->byval_arg;
 334                 goto handle_enum;
 335         case MONO_TYPE_VAR:
 336         case MONO_TYPE_MVAR:
 337                 g_assert (cfg->gshared);
 338                 if (mini_type_var_is_vt (type))
 339                         return OP_VMOVE;
 340                 else
 341                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 342         default:
 343                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 344         }
 345         return -1;
 346 }
 347
 348 void
 349 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 350 {
 351         int i;
 352         MonoInst *tree;
 353
 354         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 355         for (i = 0; i < bb->in_count; ++i)
 356                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 357         printf (", OUT: ");
 358         for (i = 0; i < bb->out_count; ++i)
 359                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 360         printf (" ]\n");
 361         for (tree = bb->code; tree; tree = tree->next)
 362                 mono_print_ins_index (-1, tree);
 363 }
 364
 365 void
 366 mono_create_helper_signatures (void)
 367 {
 368         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 369         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 370         helper_sig_llvmonly_imt_thunk = mono_create_icall_signature ("ptr ptr ptr");
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 break_on_unverified (void)
 375 {
 376         if (mini_get_debug_options ()->break_on_unverified)
 377                 G_BREAKPOINT ();
 378 }
 379
 380 static MONO_NEVER_INLINE void
 381 method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *cil_method_fname = mono_method_full_name (cil_method, TRUE);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "MethodAccessException", "Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (cil_method_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 393 {
 394         char *method_fname = mono_method_full_name (method, TRUE);
 395         char *field_fname = mono_field_full_name (field);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 397         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 398         g_free (method_fname);
 399         g_free (field_fname);
 400 }
 401
 402 static MONO_NEVER_INLINE void
 403 inline_failure (MonoCompile *cfg, const char *msg)
 404 {
 405         if (cfg->verbose_level >= 2)
 406                 printf ("inline failed: %s\n", msg);
 407         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 408 }
 409
 410 static MONO_NEVER_INLINE void
 411 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 412 {
 413         if (cfg->verbose_level > 2)                                                                                     \
 414                 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), line);
 415         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 416 }
 417
 418 static MONO_NEVER_INLINE void
 419 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 420 {
 421         cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), file, line);
 422         if (cfg->verbose_level >= 2)
 423                 printf ("%s\n", cfg->exception_message);
 424         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 425 }
 426
 427 /*
 428  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 429  * foo<T> (int i) { ldarg.0; box T; }
 430  */
 431 #define UNVERIFIED do { \
 432         if (cfg->gsharedvt) { \
 433                 if (cfg->verbose_level > 2)                                                                     \
 434                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 435                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 436                 goto exception_exit;                                                                                    \
 437         }                                                                                                                                       \
 438         break_on_unverified ();                                                                                         \
 439         goto unverified;                                                                                                        \
 440 } while (0)
 441
 442 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 443                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 444                 if (!(tblock)) {        \
 445                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 446             NEW_BBLOCK (cfg, (tblock)); \
 447                         (tblock)->cil_code = (ip);      \
 448                         ADD_BBLOCK (cfg, (tblock));     \
 449                 } \
 450         } while (0)
 451
 452 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 453 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 454                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 455                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 456                 (dest)->sreg1 = (sr1); \
 457                 (dest)->sreg2 = (sr2); \
 458                 (dest)->inst_imm = (imm); \
 459                 (dest)->backend.shift_amount = (shift); \
 460                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 461         } while (0)
 462 #endif
 463
 464 /* Emit conversions so both operands of a binary opcode are of the same type */
 465 static void
 466 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 467 {
 468         MonoInst *arg1 = *arg1_ref;
 469         MonoInst *arg2 = *arg2_ref;
 470
 471         if (cfg->r4fp &&
 472                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 473                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 474                 MonoInst *conv;
 475
 476                 /* Mixing r4/r8 is allowed by the spec */
 477                 if (arg1->type == STACK_R4) {
 478                         int dreg = alloc_freg (cfg);
 479
 480                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 481                         conv->type = STACK_R8;
 482                         ins->sreg1 = dreg;
 483                         *arg1_ref = conv;
 484                 }
 485                 if (arg2->type == STACK_R4) {
 486                         int dreg = alloc_freg (cfg);
 487
 488                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 489                         conv->type = STACK_R8;
 490                         ins->sreg2 = dreg;
 491                         *arg2_ref = conv;
 492                 }
 493         }
 494
 495 #if SIZEOF_REGISTER == 8
 496         /* FIXME: Need to add many more cases */
 497         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 498                 MonoInst *widen;
 499
 500                 int dr = alloc_preg (cfg);
 501                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 502                 (ins)->sreg2 = widen->dreg;
 503         }
 504 #endif
 505 }
 506
 507 #define ADD_BINOP(op) do {      \
 508                 MONO_INST_NEW (cfg, ins, (op)); \
 509                 sp -= 2;        \
 510                 ins->sreg1 = sp [0]->dreg;      \
 511                 ins->sreg2 = sp [1]->dreg;      \
 512                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 513                 CHECK_TYPE (ins);       \
 514                 /* Have to insert a widening op */               \
 515         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 516         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 517         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 518         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 519         } while (0)
 520
 521 #define ADD_UNOP(op) do {       \
 522                 MONO_INST_NEW (cfg, ins, (op)); \
 523                 sp--;   \
 524                 ins->sreg1 = sp [0]->dreg;      \
 525                 type_from_op (cfg, ins, sp [0], NULL);  \
 526                 CHECK_TYPE (ins);       \
 527         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 528         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 529                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 530         } while (0)
 531
 532 #define ADD_BINCOND(next_block) do {    \
 533                 MonoInst *cmp;  \
 534                 sp -= 2; \
 535                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 536                 cmp->sreg1 = sp [0]->dreg;      \
 537                 cmp->sreg2 = sp [1]->dreg;      \
 538                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 539                 CHECK_TYPE (cmp);       \
 540                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 541                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 542                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 543                 GET_BBLOCK (cfg, tblock, target);               \
 544                 link_bblock (cfg, cfg->cbb, tblock);    \
 545                 ins->inst_true_bb = tblock;     \
 546                 if ((next_block)) {     \
 547                         link_bblock (cfg, cfg->cbb, (next_block));      \
 548                         ins->inst_false_bb = (next_block);      \
 549                         start_new_bblock = 1;   \
 550                 } else {        \
 551                         GET_BBLOCK (cfg, tblock, ip);           \
 552                         link_bblock (cfg, cfg->cbb, tblock);    \
 553                         ins->inst_false_bb = tblock;    \
 554                         start_new_bblock = 2;   \
 555                 }       \
 556                 if (sp != stack_start) {                                                                        \
 557                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 558                         CHECK_UNVERIFIABLE (cfg); \
 559                 } \
 560         MONO_ADD_INS (cfg->cbb, cmp); \
 561                 MONO_ADD_INS (cfg->cbb, ins);   \
 562         } while (0)
 563
 564 /* *
 565  * link_bblock: Links two basic blocks
 566  *
 567  * links two basic blocks in the control flow graph, the 'from'
 568  * argument is the starting block and the 'to' argument is the block
 569  * the control flow ends to after 'from'.
 570  */
 571 static void
 572 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 573 {
 574         MonoBasicBlock **newa;
 575         int i, found;
 576
 577 #if 0
 578         if (from->cil_code) {
 579                 if (to->cil_code)
 580                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 581                 else
 582                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 583         } else {
 584                 if (to->cil_code)
 585                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 586                 else
 587                         printf ("edge from entry to exit\n");
 588         }
 589 #endif
 590
 591         found = FALSE;
 592         for (i = 0; i < from->out_count; ++i) {
 593                 if (to == from->out_bb [i]) {
 594                         found = TRUE;
 595                         break;
 596                 }
 597         }
 598         if (!found) {
 599                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 600                 for (i = 0; i < from->out_count; ++i) {
 601                         newa [i] = from->out_bb [i];
 602                 }
 603                 newa [i] = to;
 604                 from->out_count++;
 605                 from->out_bb = newa;
 606         }
 607
 608         found = FALSE;
 609         for (i = 0; i < to->in_count; ++i) {
 610                 if (from == to->in_bb [i]) {
 611                         found = TRUE;
 612                         break;
 613                 }
 614         }
 615         if (!found) {
 616                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 617                 for (i = 0; i < to->in_count; ++i) {
 618                         newa [i] = to->in_bb [i];
 619                 }
 620                 newa [i] = from;
 621                 to->in_count++;
 622                 to->in_bb = newa;
 623         }
 624 }
 625
 626 void
 627 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 628 {
 629         link_bblock (cfg, from, to);
 630 }
 631
 632 /**
 633  * mono_find_block_region:
 634  *
 635  *   We mark each basic block with a region ID. We use that to avoid BB
 636  *   optimizations when blocks are in different regions.
 637  *
 638  * Returns:
 639  *   A region token that encodes where this region is, and information
 640  *   about the clause owner for this block.
 641  *
 642  *   The region encodes the try/catch/filter clause that owns this block
 643  *   as well as the type.  -1 is a special value that represents a block
 644  *   that is in none of try/catch/filter.
 645  */
 646 static int
 647 mono_find_block_region (MonoCompile *cfg, int offset)
 648 {
 649         MonoMethodHeader *header = cfg->header;
 650         MonoExceptionClause *clause;
 651         int i;
 652
 653         for (i = 0; i < header->num_clauses; ++i) {
 654                 clause = &header->clauses [i];
 655                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 656                     (offset < (clause->handler_offset)))
 657                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 658
 659                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 660                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 661                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 662                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 663                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 664                         else
 665                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 666                 }
 667         }
 668         for (i = 0; i < header->num_clauses; ++i) {
 669                 clause = &header->clauses [i];
 670
 671                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 672                         return ((i + 1) << 8) | clause->flags;
 673         }
 674
 675         return -1;
 676 }
 677
 678 static GList*
 679 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 680 {
 681         MonoMethodHeader *header = cfg->header;
 682         MonoExceptionClause *clause;
 683         int i;
 684         GList *res = NULL;
 685
 686         for (i = 0; i < header->num_clauses; ++i) {
 687                 clause = &header->clauses [i];
 688                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 689                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 690                         if (clause->flags == type)
 691                                 res = g_list_append (res, clause);
 692                 }
 693         }
 694         return res;
 695 }
 696
 697 static void
 698 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 699 {
 700         MonoInst *var;
 701
 702         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 703         if (var)
 704                 return;
 705
 706         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 707         /* prevent it from being register allocated */
 708         var->flags |= MONO_INST_VOLATILE;
 709
 710         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 711 }
 712
 713 MonoInst *
 714 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 715 {
 716         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 717 }
 718
 719 static MonoInst*
 720 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 721 {
 722         MonoInst *var;
 723
 724         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 725         if (var)
 726                 return var;
 727
 728         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 729         /* prevent it from being register allocated */
 730         var->flags |= MONO_INST_VOLATILE;
 731
 732         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 733
 734         return var;
 735 }
 736
 737 /*
 738  * Returns the type used in the eval stack when @type is loaded.
 739  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 740  */
 741 void
 742 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 743 {
 744         MonoClass *klass;
 745
 746         type = mini_get_underlying_type (type);
 747         inst->klass = klass = mono_class_from_mono_type (type);
 748         if (type->byref) {
 749                 inst->type = STACK_MP;
 750                 return;
 751         }
 752
 753 handle_enum:
 754         switch (type->type) {
 755         case MONO_TYPE_VOID:
 756                 inst->type = STACK_INV;
 757                 return;
 758         case MONO_TYPE_I1:
 759         case MONO_TYPE_U1:
 760         case MONO_TYPE_I2:
 761         case MONO_TYPE_U2:
 762         case MONO_TYPE_I4:
 763         case MONO_TYPE_U4:
 764                 inst->type = STACK_I4;
 765                 return;
 766         case MONO_TYPE_I:
 767         case MONO_TYPE_U:
 768         case MONO_TYPE_PTR:
 769         case MONO_TYPE_FNPTR:
 770                 inst->type = STACK_PTR;
 771                 return;
 772         case MONO_TYPE_CLASS:
 773         case MONO_TYPE_STRING:
 774         case MONO_TYPE_OBJECT:
 775         case MONO_TYPE_SZARRAY:
 776         case MONO_TYPE_ARRAY:
 777                 inst->type = STACK_OBJ;
 778                 return;
 779         case MONO_TYPE_I8:
 780         case MONO_TYPE_U8:
 781                 inst->type = STACK_I8;
 782                 return;
 783         case MONO_TYPE_R4:
 784                 inst->type = cfg->r4_stack_type;
 785                 break;
 786         case MONO_TYPE_R8:
 787                 inst->type = STACK_R8;
 788                 return;
 789         case MONO_TYPE_VALUETYPE:
 790                 if (type->data.klass->enumtype) {
 791                         type = mono_class_enum_basetype (type->data.klass);
 792                         goto handle_enum;
 793                 } else {
 794                         inst->klass = klass;
 795                         inst->type = STACK_VTYPE;
 796                         return;
 797                 }
 798         case MONO_TYPE_TYPEDBYREF:
 799                 inst->klass = mono_defaults.typed_reference_class;
 800                 inst->type = STACK_VTYPE;
 801                 return;
 802         case MONO_TYPE_GENERICINST:
 803                 type = &type->data.generic_class->container_class->byval_arg;
 804                 goto handle_enum;
 805         case MONO_TYPE_VAR:
 806         case MONO_TYPE_MVAR:
 807                 g_assert (cfg->gshared);
 808                 if (mini_is_gsharedvt_type (type)) {
 809                         g_assert (cfg->gsharedvt);
 810                         inst->type = STACK_VTYPE;
 811                 } else {
 812                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 813                 }
 814                 return;
 815         default:
 816                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 817         }
 818 }
 819
 820 /*
 821  * The following tables are used to quickly validate the IL code in type_from_op ().
 822  */
 823 static const char
 824 bin_num_table [STACK_MAX] [STACK_MAX] = {
 825         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 826         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 827         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 828         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 829         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 830         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 831         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 834 };
 835
 836 static const char
 837 neg_table [] = {
 838         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 839 };
 840
 841 /* reduce the size of this table */
 842 static const char
 843 bin_int_table [STACK_MAX] [STACK_MAX] = {
 844         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 845         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 846         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 847         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 848         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 849         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 850         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 852 };
 853
 854 static const char
 855 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 856 /*      Inv i  L  p  F  &  O  vt r4 */
 857         {0},
 858         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 859         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 860         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 861         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 862         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 863         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 864         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 865         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 866 };
 867
 868 /* reduce the size of this table */
 869 static const char
 870 shift_table [STACK_MAX] [STACK_MAX] = {
 871         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 872         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 873         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 874         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 875         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 876         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 877         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 879 };
 880
 881 /*
 882  * Tables to map from the non-specific opcode to the matching
 883  * type-specific opcode.
 884  */
 885 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 886 static const guint16
 887 binops_op_map [STACK_MAX] = {
 888         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD, 0, 0, OP_RADD-CEE_ADD
 889 };
 890
 891 /* handles from CEE_NEG to CEE_CONV_U8 */
 892 static const guint16
 893 unops_op_map [STACK_MAX] = {
 894         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG, 0, 0, OP_RNEG-CEE_NEG
 895 };
 896
 897 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 898 static const guint16
 899 ovfops_op_map [STACK_MAX] = {
 900         0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, 0, OP_RCONV_TO_U2-CEE_CONV_U2
 901 };
 902
 903 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 904 static const guint16
 905 ovf2ops_op_map [STACK_MAX] = {
 906         0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, 0, 0, OP_RCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
 907 };
 908
 909 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 910 static const guint16
 911 ovf3ops_op_map [STACK_MAX] = {
 912         0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, 0, 0, OP_RCONV_TO_OVF_I1-CEE_CONV_OVF_I1
 913 };
 914
 915 /* handles from CEE_BEQ to CEE_BLT_UN */
 916 static const guint16
 917 beqops_op_map [STACK_MAX] = {
 918         0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, 0, OP_FBEQ-CEE_BEQ
 919 };
 920
 921 /* handles from CEE_CEQ to CEE_CLT_UN */
 922 static const guint16
 923 ceqops_op_map [STACK_MAX] = {
 924         0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, 0, OP_RCEQ-OP_CEQ
 925 };
 926
 927 /*
 928  * Sets ins->type (the type on the eval stack) according to the
 929  * type of the opcode and the arguments to it.
 930  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 931  *
 932  * FIXME: this function sets ins->type unconditionally in some cases, but
 933  * it should set it to invalid for some types (a conv.x on an object)
 934  */
 935 static void
 936 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 937 {
 938         switch (ins->opcode) {
 939         /* binops */
 940         case CEE_ADD:
 941         case CEE_SUB:
 942         case CEE_MUL:
 943         case CEE_DIV:
 944         case CEE_REM:
 945                 /* FIXME: check unverifiable args for STACK_MP */
 946                 ins->type = bin_num_table [src1->type] [src2->type];
 947                 ins->opcode += binops_op_map [ins->type];
 948                 break;
 949         case CEE_DIV_UN:
 950         case CEE_REM_UN:
 951         case CEE_AND:
 952         case CEE_OR:
 953         case CEE_XOR:
 954                 ins->type = bin_int_table [src1->type] [src2->type];
 955                 ins->opcode += binops_op_map [ins->type];
 956                 break;
 957         case CEE_SHL:
 958         case CEE_SHR:
 959         case CEE_SHR_UN:
 960                 ins->type = shift_table [src1->type] [src2->type];
 961                 ins->opcode += binops_op_map [ins->type];
 962                 break;
 963         case OP_COMPARE:
 964         case OP_LCOMPARE:
 965         case OP_ICOMPARE:
 966                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 967                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 968                         ins->opcode = OP_LCOMPARE;
 969                 else if (src1->type == STACK_R4)
 970                         ins->opcode = OP_RCOMPARE;
 971                 else if (src1->type == STACK_R8)
 972                         ins->opcode = OP_FCOMPARE;
 973                 else
 974                         ins->opcode = OP_ICOMPARE;
 975                 break;
 976         case OP_ICOMPARE_IMM:
 977                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 978                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 979                         ins->opcode = OP_LCOMPARE_IMM;
 980                 break;
 981         case CEE_BEQ:
 982         case CEE_BGE:
 983         case CEE_BGT:
 984         case CEE_BLE:
 985         case CEE_BLT:
 986         case CEE_BNE_UN:
 987         case CEE_BGE_UN:
 988         case CEE_BGT_UN:
 989         case CEE_BLE_UN:
 990         case CEE_BLT_UN:
 991                 ins->opcode += beqops_op_map [src1->type];
 992                 break;
 993         case OP_CEQ:
 994                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 995                 ins->opcode += ceqops_op_map [src1->type];
 996                 break;
 997         case OP_CGT:
 998         case OP_CGT_UN:
 999         case OP_CLT:
1000         case OP_CLT_UN:
1001                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         /* unops */
1005         case CEE_NEG:
1006                 ins->type = neg_table [src1->type];
1007                 ins->opcode += unops_op_map [ins->type];
1008                 break;
1009         case CEE_NOT:
1010                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1011                         ins->type = src1->type;
1012                 else
1013                         ins->type = STACK_INV;
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_CONV_I1:
1017         case CEE_CONV_I2:
1018         case CEE_CONV_I4:
1019         case CEE_CONV_U4:
1020                 ins->type = STACK_I4;
1021                 ins->opcode += unops_op_map [src1->type];
1022                 break;
1023         case CEE_CONV_R_UN:
1024                 ins->type = STACK_R8;
1025                 switch (src1->type) {
1026                 case STACK_I4:
1027                 case STACK_PTR:
1028                         ins->opcode = OP_ICONV_TO_R_UN;
1029                         break;
1030                 case STACK_I8:
1031                         ins->opcode = OP_LCONV_TO_R_UN;
1032                         break;
1033                 }
1034                 break;
1035         case CEE_CONV_OVF_I1:
1036         case CEE_CONV_OVF_U1:
1037         case CEE_CONV_OVF_I2:
1038         case CEE_CONV_OVF_U2:
1039         case CEE_CONV_OVF_I4:
1040         case CEE_CONV_OVF_U4:
1041                 ins->type = STACK_I4;
1042                 ins->opcode += ovf3ops_op_map [src1->type];
1043                 break;
1044         case CEE_CONV_OVF_I_UN:
1045         case CEE_CONV_OVF_U_UN:
1046                 ins->type = STACK_PTR;
1047                 ins->opcode += ovf2ops_op_map [src1->type];
1048                 break;
1049         case CEE_CONV_OVF_I1_UN:
1050         case CEE_CONV_OVF_I2_UN:
1051         case CEE_CONV_OVF_I4_UN:
1052         case CEE_CONV_OVF_U1_UN:
1053         case CEE_CONV_OVF_U2_UN:
1054         case CEE_CONV_OVF_U4_UN:
1055                 ins->type = STACK_I4;
1056                 ins->opcode += ovf2ops_op_map [src1->type];
1057                 break;
1058         case CEE_CONV_U:
1059                 ins->type = STACK_PTR;
1060                 switch (src1->type) {
1061                 case STACK_I4:
1062                         ins->opcode = OP_ICONV_TO_U;
1063                         break;
1064                 case STACK_PTR:
1065                 case STACK_MP:
1066 #if SIZEOF_VOID_P == 8
1067                         ins->opcode = OP_LCONV_TO_U;
1068 #else
1069                         ins->opcode = OP_MOVE;
1070 #endif
1071                         break;
1072                 case STACK_I8:
1073                         ins->opcode = OP_LCONV_TO_U;
1074                         break;
1075                 case STACK_R8:
1076                         ins->opcode = OP_FCONV_TO_U;
1077                         break;
1078                 }
1079                 break;
1080         case CEE_CONV_I8:
1081         case CEE_CONV_U8:
1082                 ins->type = STACK_I8;
1083                 ins->opcode += unops_op_map [src1->type];
1084                 break;
1085         case CEE_CONV_OVF_I8:
1086         case CEE_CONV_OVF_U8:
1087                 ins->type = STACK_I8;
1088                 ins->opcode += ovf3ops_op_map [src1->type];
1089                 break;
1090         case CEE_CONV_OVF_U8_UN:
1091         case CEE_CONV_OVF_I8_UN:
1092                 ins->type = STACK_I8;
1093                 ins->opcode += ovf2ops_op_map [src1->type];
1094                 break;
1095         case CEE_CONV_R4:
1096                 ins->type = cfg->r4_stack_type;
1097                 ins->opcode += unops_op_map [src1->type];
1098                 break;
1099         case CEE_CONV_R8:
1100                 ins->type = STACK_R8;
1101                 ins->opcode += unops_op_map [src1->type];
1102                 break;
1103         case OP_CKFINITE:
1104                 ins->type = STACK_R8;
1105                 break;
1106         case CEE_CONV_U2:
1107         case CEE_CONV_U1:
1108                 ins->type = STACK_I4;
1109                 ins->opcode += ovfops_op_map [src1->type];
1110                 break;
1111         case CEE_CONV_I:
1112         case CEE_CONV_OVF_I:
1113         case CEE_CONV_OVF_U:
1114                 ins->type = STACK_PTR;
1115                 ins->opcode += ovfops_op_map [src1->type];
1116                 break;
1117         case CEE_ADD_OVF:
1118         case CEE_ADD_OVF_UN:
1119         case CEE_MUL_OVF:
1120         case CEE_MUL_OVF_UN:
1121         case CEE_SUB_OVF:
1122         case CEE_SUB_OVF_UN:
1123                 ins->type = bin_num_table [src1->type] [src2->type];
1124                 ins->opcode += ovfops_op_map [src1->type];
1125                 if (ins->type == STACK_R8)
1126                         ins->type = STACK_INV;
1127                 break;
1128         case OP_LOAD_MEMBASE:
1129                 ins->type = STACK_PTR;
1130                 break;
1131         case OP_LOADI1_MEMBASE:
1132         case OP_LOADU1_MEMBASE:
1133         case OP_LOADI2_MEMBASE:
1134         case OP_LOADU2_MEMBASE:
1135         case OP_LOADI4_MEMBASE:
1136         case OP_LOADU4_MEMBASE:
1137                 ins->type = STACK_PTR;
1138                 break;
1139         case OP_LOADI8_MEMBASE:
1140                 ins->type = STACK_I8;
1141                 break;
1142         case OP_LOADR4_MEMBASE:
1143                 ins->type = cfg->r4_stack_type;
1144                 break;
1145         case OP_LOADR8_MEMBASE:
1146                 ins->type = STACK_R8;
1147                 break;
1148         default:
1149                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1150                 break;
1151         }
1152
1153         if (ins->type == STACK_MP)
1154                 ins->klass = mono_defaults.object_class;
1155 }
1156
1157 static const char
1158 ldind_type [] = {
1159         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1160 };
1161
1162 #if 0
1163
1164 static const char
1165 param_table [STACK_MAX] [STACK_MAX] = {
1166         {0},
1167 };
1168
1169 static int
1170 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1171 {
1172         int i;
1173
1174         if (sig->hasthis) {
1175                 switch (args->type) {
1176                 case STACK_I4:
1177                 case STACK_I8:
1178                 case STACK_R8:
1179                 case STACK_VTYPE:
1180                 case STACK_INV:
1181                         return 0;
1182                 }
1183                 args++;
1184         }
1185         for (i = 0; i < sig->param_count; ++i) {
1186                 switch (args [i].type) {
1187                 case STACK_INV:
1188                         return 0;
1189                 case STACK_MP:
1190                         if (!sig->params [i]->byref)
1191                                 return 0;
1192                         continue;
1193                 case STACK_OBJ:
1194                         if (sig->params [i]->byref)
1195                                 return 0;
1196                         switch (sig->params [i]->type) {
1197                         case MONO_TYPE_CLASS:
1198                         case MONO_TYPE_STRING:
1199                         case MONO_TYPE_OBJECT:
1200                         case MONO_TYPE_SZARRAY:
1201                         case MONO_TYPE_ARRAY:
1202                                 break;
1203                         default:
1204                                 return 0;
1205                         }
1206                         continue;
1207                 case STACK_R8:
1208                         if (sig->params [i]->byref)
1209                                 return 0;
1210                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1211                                 return 0;
1212                         continue;
1213                 case STACK_PTR:
1214                 case STACK_I4:
1215                 case STACK_I8:
1216                 case STACK_VTYPE:
1217                         break;
1218                 }
1219                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1220                         return 0;*/
1221         }
1222         return 1;
1223 }
1224 #endif
1225
1226 /*
1227  * When we need a pointer to the current domain many times in a method, we
1228  * call mono_domain_get() once and we store the result in a local variable.
1229  * This function returns the variable that represents the MonoDomain*.
1230  */
1231 inline static MonoInst *
1232 mono_get_domainvar (MonoCompile *cfg)
1233 {
1234         if (!cfg->domainvar)
1235                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1236         return cfg->domainvar;
1237 }
1238
1239 /*
1240  * The got_var contains the address of the Global Offset Table when AOT
1241  * compiling.
1242  */
1243 MonoInst *
1244 mono_get_got_var (MonoCompile *cfg)
1245 {
1246         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1247                 return NULL;
1248         if (!cfg->got_var) {
1249                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1250         }
1251         return cfg->got_var;
1252 }
1253
1254 static MonoInst *
1255 mono_get_vtable_var (MonoCompile *cfg)
1256 {
1257         g_assert (cfg->gshared);
1258
1259         if (!cfg->rgctx_var) {
1260                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1261                 /* force the var to be stack allocated */
1262                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1263         }
1264
1265         return cfg->rgctx_var;
1266 }
1267
1268 static MonoType*
1269 type_from_stack_type (MonoInst *ins) {
1270         switch (ins->type) {
1271         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1272         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1273         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1274         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1275         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1276         case STACK_MP:
1277                 return &ins->klass->this_arg;
1278         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1279         case STACK_VTYPE: return &ins->klass->byval_arg;
1280         default:
1281                 g_error ("stack type %d to monotype not handled\n", ins->type);
1282         }
1283         return NULL;
1284 }
1285
1286 static G_GNUC_UNUSED int
1287 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1288 {
1289         t = mono_type_get_underlying_type (t);
1290         switch (t->type) {
1291         case MONO_TYPE_I1:
1292         case MONO_TYPE_U1:
1293         case MONO_TYPE_I2:
1294         case MONO_TYPE_U2:
1295         case MONO_TYPE_I4:
1296         case MONO_TYPE_U4:
1297                 return STACK_I4;
1298         case MONO_TYPE_I:
1299         case MONO_TYPE_U:
1300         case MONO_TYPE_PTR:
1301         case MONO_TYPE_FNPTR:
1302                 return STACK_PTR;
1303         case MONO_TYPE_CLASS:
1304         case MONO_TYPE_STRING:
1305         case MONO_TYPE_OBJECT:
1306         case MONO_TYPE_SZARRAY:
1307         case MONO_TYPE_ARRAY:
1308                 return STACK_OBJ;
1309         case MONO_TYPE_I8:
1310         case MONO_TYPE_U8:
1311                 return STACK_I8;
1312         case MONO_TYPE_R4:
1313                 return cfg->r4_stack_type;
1314         case MONO_TYPE_R8:
1315                 return STACK_R8;
1316         case MONO_TYPE_VALUETYPE:
1317         case MONO_TYPE_TYPEDBYREF:
1318                 return STACK_VTYPE;
1319         case MONO_TYPE_GENERICINST:
1320                 if (mono_type_generic_inst_is_valuetype (t))
1321                         return STACK_VTYPE;
1322                 else
1323                         return STACK_OBJ;
1324                 break;
1325         default:
1326                 g_assert_not_reached ();
1327         }
1328
1329         return -1;
1330 }
1331
1332 static MonoClass*
1333 array_access_to_klass (int opcode)
1334 {
1335         switch (opcode) {
1336         case CEE_LDELEM_U1:
1337                 return mono_defaults.byte_class;
1338         case CEE_LDELEM_U2:
1339                 return mono_defaults.uint16_class;
1340         case CEE_LDELEM_I:
1341         case CEE_STELEM_I:
1342                 return mono_defaults.int_class;
1343         case CEE_LDELEM_I1:
1344         case CEE_STELEM_I1:
1345                 return mono_defaults.sbyte_class;
1346         case CEE_LDELEM_I2:
1347         case CEE_STELEM_I2:
1348                 return mono_defaults.int16_class;
1349         case CEE_LDELEM_I4:
1350         case CEE_STELEM_I4:
1351                 return mono_defaults.int32_class;
1352         case CEE_LDELEM_U4:
1353                 return mono_defaults.uint32_class;
1354         case CEE_LDELEM_I8:
1355         case CEE_STELEM_I8:
1356                 return mono_defaults.int64_class;
1357         case CEE_LDELEM_R4:
1358         case CEE_STELEM_R4:
1359                 return mono_defaults.single_class;
1360         case CEE_LDELEM_R8:
1361         case CEE_STELEM_R8:
1362                 return mono_defaults.double_class;
1363         case CEE_LDELEM_REF:
1364         case CEE_STELEM_REF:
1365                 return mono_defaults.object_class;
1366         default:
1367                 g_assert_not_reached ();
1368         }
1369         return NULL;
1370 }
1371
1372 /*
1373  * We try to share variables when possible
1374  */
1375 static MonoInst *
1376 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1377 {
1378         MonoInst *res;
1379         int pos, vnum;
1380
1381         /* inlining can result in deeper stacks */
1382         if (slot >= cfg->header->max_stack)
1383                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1384
1385         pos = ins->type - 1 + slot * STACK_MAX;
1386
1387         switch (ins->type) {
1388         case STACK_I4:
1389         case STACK_I8:
1390         case STACK_R8:
1391         case STACK_PTR:
1392         case STACK_MP:
1393         case STACK_OBJ:
1394                 if ((vnum = cfg->intvars [pos]))
1395                         return cfg->varinfo [vnum];
1396                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1397                 cfg->intvars [pos] = res->inst_c0;
1398                 break;
1399         default:
1400                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1401         }
1402         return res;
1403 }
1404
1405 static void
1406 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1407 {
1408         /*
1409          * Don't use this if a generic_context is set, since that means AOT can't
1410          * look up the method using just the image+token.
1411          * table == 0 means this is a reference made from a wrapper.
1412          */
1413         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1414                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1415                 jump_info_token->image = image;
1416                 jump_info_token->token = token;
1417                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1418         }
1419 }
1420
1421 /*
1422  * This function is called to handle items that are left on the evaluation stack
1423  * at basic block boundaries. What happens is that we save the values to local variables
1424  * and we reload them later when first entering the target basic block (with the
1425  * handle_loaded_temps () function).
1426  * A single joint point will use the same variables (stored in the array bb->out_stack or
1427  * bb->in_stack, if the basic block is before or after the joint point).
1428  *
1429  * This function needs to be called _before_ emitting the last instruction of
1430  * the bb (i.e. before emitting a branch).
1431  * If the stack merge fails at a join point, cfg->unverifiable is set.
1432  */
1433 static void
1434 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1435 {
1436         int i, bindex;
1437         MonoBasicBlock *bb = cfg->cbb;
1438         MonoBasicBlock *outb;
1439         MonoInst *inst, **locals;
1440         gboolean found;
1441
1442         if (!count)
1443                 return;
1444         if (cfg->verbose_level > 3)
1445                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1446         if (!bb->out_scount) {
1447                 bb->out_scount = count;
1448                 //printf ("bblock %d has out:", bb->block_num);
1449                 found = FALSE;
1450                 for (i = 0; i < bb->out_count; ++i) {
1451                         outb = bb->out_bb [i];
1452                         /* exception handlers are linked, but they should not be considered for stack args */
1453                         if (outb->flags & BB_EXCEPTION_HANDLER)
1454                                 continue;
1455                         //printf (" %d", outb->block_num);
1456                         if (outb->in_stack) {
1457                                 found = TRUE;
1458                                 bb->out_stack = outb->in_stack;
1459                                 break;
1460                         }
1461                 }
1462                 //printf ("\n");
1463                 if (!found) {
1464                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1465                         for (i = 0; i < count; ++i) {
1466                                 /*
1467                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1468                                  * stack slot and if they are of the same type.
1469                                  * This won't cause conflicts since if 'local' is used to
1470                                  * store one of the values in the in_stack of a bblock, then
1471                                  * the same variable will be used for the same outgoing stack
1472                                  * slot as well.
1473                                  * This doesn't work when inlining methods, since the bblocks
1474                                  * in the inlined methods do not inherit their in_stack from
1475                                  * the bblock they are inlined to. See bug #58863 for an
1476                                  * example.
1477                                  */
1478                                 if (cfg->inlined_method)
1479                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1480                                 else
1481                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1482                         }
1483                 }
1484         }
1485
1486         for (i = 0; i < bb->out_count; ++i) {
1487                 outb = bb->out_bb [i];
1488                 /* exception handlers are linked, but they should not be considered for stack args */
1489                 if (outb->flags & BB_EXCEPTION_HANDLER)
1490                         continue;
1491                 if (outb->in_scount) {
1492                         if (outb->in_scount != bb->out_scount) {
1493                                 cfg->unverifiable = TRUE;
1494                                 return;
1495                         }
1496                         continue; /* check they are the same locals */
1497                 }
1498                 outb->in_scount = count;
1499                 outb->in_stack = bb->out_stack;
1500         }
1501
1502         locals = bb->out_stack;
1503         cfg->cbb = bb;
1504         for (i = 0; i < count; ++i) {
1505                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1506                 inst->cil_code = sp [i]->cil_code;
1507                 sp [i] = locals [i];
1508                 if (cfg->verbose_level > 3)
1509                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1510         }
1511
1512         /*
1513          * It is possible that the out bblocks already have in_stack assigned, and
1514          * the in_stacks differ. In this case, we will store to all the different
1515          * in_stacks.
1516          */
1517
1518         found = TRUE;
1519         bindex = 0;
1520         while (found) {
1521                 /* Find a bblock which has a different in_stack */
1522                 found = FALSE;
1523                 while (bindex < bb->out_count) {
1524                         outb = bb->out_bb [bindex];
1525                         /* exception handlers are linked, but they should not be considered for stack args */
1526                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1527                                 bindex++;
1528                                 continue;
1529                         }
1530                         if (outb->in_stack != locals) {
1531                                 for (i = 0; i < count; ++i) {
1532                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1533                                         inst->cil_code = sp [i]->cil_code;
1534                                         sp [i] = locals [i];
1535                                         if (cfg->verbose_level > 3)
1536                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1537                                 }
1538                                 locals = outb->in_stack;
1539                                 found = TRUE;
1540                                 break;
1541                         }
1542                         bindex ++;
1543                 }
1544         }
1545 }
1546
1547 static MonoInst*
1548 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1549 {
1550         MonoInst *ins;
1551
1552         if (cfg->compile_aot) {
1553                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1554         } else {
1555                 MonoJumpInfo ji;
1556                 gpointer target;
1557                 MonoError error;
1558
1559                 ji.type = patch_type;
1560                 ji.data.target = data;
1561                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1562                 mono_error_assert_ok (&error);
1563
1564                 EMIT_NEW_PCONST (cfg, ins, target);
1565         }
1566         return ins;
1567 }
1568
1569 static void
1570 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1571 {
1572         int ibitmap_reg = alloc_preg (cfg);
1573 #ifdef COMPRESSED_INTERFACE_BITMAP
1574         MonoInst *args [2];
1575         MonoInst *res, *ins;
1576         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1577         MONO_ADD_INS (cfg->cbb, ins);
1578         args [0] = ins;
1579         args [1] = emit_runtime_constant (cfg, MONO_PATCH_INFO_IID, klass);
1580         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1581         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1582 #else
1583         int ibitmap_byte_reg = alloc_preg (cfg);
1584
1585         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1586
1587         if (cfg->compile_aot) {
1588                 int iid_reg = alloc_preg (cfg);
1589                 int shifted_iid_reg = alloc_preg (cfg);
1590                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1591                 int masked_iid_reg = alloc_preg (cfg);
1592                 int iid_one_bit_reg = alloc_preg (cfg);
1593                 int iid_bit_reg = alloc_preg (cfg);
1594                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1595                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1596                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1597                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1598                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1599                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1600                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1601                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1602         } else {
1603                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1604                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1605         }
1606 #endif
1607 }
1608
1609 /*
1610  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1611  * stored in "klass_reg" implements the interface "klass".
1612  */
1613 static void
1614 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1615 {
1616         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1617 }
1618
1619 /*
1620  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1621  * stored in "vtable_reg" implements the interface "klass".
1622  */
1623 static void
1624 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1625 {
1626         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1627 }
1628
1629 /*
1630  * Emit code which checks whenever the interface id of @klass is smaller than
1631  * than the value given by max_iid_reg.
1632 */
1633 static void
1634 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1635                                                  MonoBasicBlock *false_target)
1636 {
1637         if (cfg->compile_aot) {
1638                 int iid_reg = alloc_preg (cfg);
1639                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1640                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1641         }
1642         else
1643                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1644         if (false_target)
1645                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1646         else
1647                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1648 }
1649
1650 /* Same as above, but obtains max_iid from a vtable */
1651 static void
1652 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1653                                                                  MonoBasicBlock *false_target)
1654 {
1655         int max_iid_reg = alloc_preg (cfg);
1656
1657         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1658         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1659 }
1660
1661 /* Same as above, but obtains max_iid from a klass */
1662 static void
1663 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1664                                                                  MonoBasicBlock *false_target)
1665 {
1666         int max_iid_reg = alloc_preg (cfg);
1667
1668         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1669         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1670 }
1671
1672 static void
1673 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1674 {
1675         int idepth_reg = alloc_preg (cfg);
1676         int stypes_reg = alloc_preg (cfg);
1677         int stype = alloc_preg (cfg);
1678
1679         mono_class_setup_supertypes (klass);
1680
1681         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1682                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1683                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1684                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1685         }
1686         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1687         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1688         if (klass_ins) {
1689                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1690         } else if (cfg->compile_aot) {
1691                 int const_reg = alloc_preg (cfg);
1692                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1693                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1694         } else {
1695                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1696         }
1697         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1698 }
1699
1700 static void
1701 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1702 {
1703         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1704 }
1705
1706 static void
1707 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1708 {
1709         int intf_reg = alloc_preg (cfg);
1710
1711         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1712         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1713         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1714         if (true_target)
1715                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1716         else
1717                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1718 }
1719
1720 /*
1721  * Variant of the above that takes a register to the class, not the vtable.
1722  */
1723 static void
1724 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1725 {
1726         int intf_bit_reg = alloc_preg (cfg);
1727
1728         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1729         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1730         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1731         if (true_target)
1732                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1733         else
1734                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1735 }
1736
1737 static inline void
1738 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1739 {
1740         if (klass_inst) {
1741                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1742         } else {
1743                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
1744                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, ins->dreg);
1745         }
1746         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1747 }
1748
1749 static inline void
1750 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1751 {
1752         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1753 }
1754
1755 static inline void
1756 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1757 {
1758         if (cfg->compile_aot) {
1759                 int const_reg = alloc_preg (cfg);
1760                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1761                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1762         } else {
1763                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1764         }
1765         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1766 }
1767
1768 static void
1769 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1770
1771 static void
1772 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1773 {
1774         if (klass->rank) {
1775                 int rank_reg = alloc_preg (cfg);
1776                 int eclass_reg = alloc_preg (cfg);
1777
1778                 g_assert (!klass_inst);
1779                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1780                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1781                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1782                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1783                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1784                 if (klass->cast_class == mono_defaults.object_class) {
1785                         int parent_reg = alloc_preg (cfg);
1786                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1787                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1788                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1789                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1790                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1791                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1792                 } else if (klass->cast_class == mono_defaults.enum_class) {
1793                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1794                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1795                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1796                 } else {
1797                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1798                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1799                 }
1800
1801                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1802                         /* Check that the object is a vector too */
1803                         int bounds_reg = alloc_preg (cfg);
1804                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1805                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1806                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1807                 }
1808         } else {
1809                 int idepth_reg = alloc_preg (cfg);
1810                 int stypes_reg = alloc_preg (cfg);
1811                 int stype = alloc_preg (cfg);
1812
1813                 mono_class_setup_supertypes (klass);
1814
1815                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1816                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1817                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1818                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1819                 }
1820                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1821                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1822                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1823         }
1824 }
1825
1826 static void
1827 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1828 {
1829         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1830 }
1831
1832 static void
1833 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1834 {
1835         int val_reg;
1836
1837         g_assert (val == 0);
1838
1839         if (align == 0)
1840                 align = 4;
1841
1842         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1843                 switch (size) {
1844                 case 1:
1845                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1846                         return;
1847                 case 2:
1848                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1849                         return;
1850                 case 4:
1851                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1852                         return;
1853 #if SIZEOF_REGISTER == 8
1854                 case 8:
1855                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1856                         return;
1857 #endif
1858                 }
1859         }
1860
1861         val_reg = alloc_preg (cfg);
1862
1863         if (SIZEOF_REGISTER == 8)
1864                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1865         else
1866                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1867
1868         if (align < 4) {
1869                 /* This could be optimized further if neccesary */
1870                 while (size >= 1) {
1871                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1872                         offset += 1;
1873                         size -= 1;
1874                 }
1875                 return;
1876         }
1877
1878         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1879                 if (offset % 8) {
1880                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1881                         offset += 4;
1882                         size -= 4;
1883                 }
1884                 while (size >= 8) {
1885                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1886                         offset += 8;
1887                         size -= 8;
1888                 }
1889         }
1890
1891         while (size >= 4) {
1892                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1893                 offset += 4;
1894                 size -= 4;
1895         }
1896         while (size >= 2) {
1897                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1898                 offset += 2;
1899                 size -= 2;
1900         }
1901         while (size >= 1) {
1902                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1903                 offset += 1;
1904                 size -= 1;
1905         }
1906 }
1907
1908 void
1909 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1910 {
1911         int cur_reg;
1912
1913         if (align == 0)
1914                 align = 4;
1915
1916         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1917         g_assert (size < 10000);
1918
1919         if (align < 4) {
1920                 /* This could be optimized further if neccesary */
1921                 while (size >= 1) {
1922                         cur_reg = alloc_preg (cfg);
1923                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1924                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1925                         doffset += 1;
1926                         soffset += 1;
1927                         size -= 1;
1928                 }
1929         }
1930
1931         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1932                 while (size >= 8) {
1933                         cur_reg = alloc_preg (cfg);
1934                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1935                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1936                         doffset += 8;
1937                         soffset += 8;
1938                         size -= 8;
1939                 }
1940         }
1941
1942         while (size >= 4) {
1943                 cur_reg = alloc_preg (cfg);
1944                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1945                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1946                 doffset += 4;
1947                 soffset += 4;
1948                 size -= 4;
1949         }
1950         while (size >= 2) {
1951                 cur_reg = alloc_preg (cfg);
1952                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1953                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1954                 doffset += 2;
1955                 soffset += 2;
1956                 size -= 2;
1957         }
1958         while (size >= 1) {
1959                 cur_reg = alloc_preg (cfg);
1960                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1961                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1962                 doffset += 1;
1963                 soffset += 1;
1964                 size -= 1;
1965         }
1966 }
1967
1968 static void
1969 emit_tls_set (MonoCompile *cfg, int sreg1, MonoTlsKey tls_key)
1970 {
1971         MonoInst *ins, *c;
1972
1973         if (cfg->compile_aot) {
1974                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1975                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1976                 ins->sreg1 = sreg1;
1977                 ins->sreg2 = c->dreg;
1978                 MONO_ADD_INS (cfg->cbb, ins);
1979         } else {
1980                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1981                 ins->sreg1 = sreg1;
1982                 ins->inst_offset = mini_get_tls_offset (tls_key);
1983                 MONO_ADD_INS (cfg->cbb, ins);
1984         }
1985 }
1986
1987 /*
1988  * emit_push_lmf:
1989  *
1990  *   Emit IR to push the current LMF onto the LMF stack.
1991  */
1992 static void
1993 emit_push_lmf (MonoCompile *cfg)
1994 {
1995         /*
1996          * Emit IR to push the LMF:
1997          * lmf_addr = <lmf_addr from tls>
1998          * lmf->lmf_addr = lmf_addr
1999          * lmf->prev_lmf = *lmf_addr
2000          * *lmf_addr = lmf
2001          */
2002         int lmf_reg, prev_lmf_reg;
2003         MonoInst *ins, *lmf_ins;
2004
2005         if (!cfg->lmf_ir)
2006                 return;
2007
2008         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2009                 /* Load current lmf */
2010                 lmf_ins = mono_get_lmf_intrinsic (cfg);
2011                 g_assert (lmf_ins);
2012                 MONO_ADD_INS (cfg->cbb, lmf_ins);
2013                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2014                 lmf_reg = ins->dreg;
2015                 /* Save previous_lmf */
2016                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2017                 /* Set new LMF */
2018                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2019         } else {
2020                 /*
2021                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2022                  */
2023                 if (!cfg->lmf_addr_var)
2024                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2025
2026 #ifdef HOST_WIN32
2027                 ins = mono_get_jit_tls_intrinsic (cfg);
2028                 if (ins) {
2029                         int jit_tls_dreg = ins->dreg;
2030
2031                         MONO_ADD_INS (cfg->cbb, ins);
2032                         lmf_reg = alloc_preg (cfg);
2033                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2034                 } else {
2035                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2036                 }
2037 #else
2038                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2039                 if (lmf_ins) {
2040                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2041                 } else {
2042 #ifdef TARGET_IOS
2043                         MonoInst *args [16], *jit_tls_ins, *ins;
2044
2045                         /* Inline mono_get_lmf_addr () */
2046                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2047
2048                         /* Load mono_jit_tls_id */
2049                         if (cfg->compile_aot)
2050                                 EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2051                         else
2052                                 EMIT_NEW_ICONST (cfg, args [0], mono_jit_tls_id);
2053                         /* call pthread_getspecific () */
2054                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2055                         /* lmf_addr = &jit_tls->lmf */
2056                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2057                         lmf_ins = ins;
2058 #else
2059                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2060 #endif
2061                 }
2062 #endif
2063                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2064
2065                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2066                 lmf_reg = ins->dreg;
2067
2068                 prev_lmf_reg = alloc_preg (cfg);
2069                 /* Save previous_lmf */
2070                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2071                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2072                 /* Set new lmf */
2073                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2074         }
2075 }
2076
2077 /*
2078  * emit_pop_lmf:
2079  *
2080  *   Emit IR to pop the current LMF from the LMF stack.
2081  */
2082 static void
2083 emit_pop_lmf (MonoCompile *cfg)
2084 {
2085         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2086         MonoInst *ins;
2087
2088         if (!cfg->lmf_ir)
2089                 return;
2090
2091         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2092         lmf_reg = ins->dreg;
2093
2094         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2095                 /* Load previous_lmf */
2096                 prev_lmf_reg = alloc_preg (cfg);
2097                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2098                 /* Set new LMF */
2099                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2100         } else {
2101                 /*
2102                  * Emit IR to pop the LMF:
2103                  * *(lmf->lmf_addr) = lmf->prev_lmf
2104                  */
2105                 /* This could be called before emit_push_lmf () */
2106                 if (!cfg->lmf_addr_var)
2107                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2108                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2109
2110                 prev_lmf_reg = alloc_preg (cfg);
2111                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2112                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2113         }
2114 }
2115
2116 static void
2117 emit_instrumentation_call (MonoCompile *cfg, void *func)
2118 {
2119         MonoInst *iargs [1];
2120
2121         /*
2122          * Avoid instrumenting inlined methods since it can
2123          * distort profiling results.
2124          */
2125         if (cfg->method != cfg->current_method)
2126                 return;
2127
2128         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2129                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2130                 mono_emit_jit_icall (cfg, func, iargs);
2131         }
2132 }
2133
2134 static int
2135 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
2136 {
2137 handle_enum:
2138         type = mini_get_underlying_type (type);
2139         switch (type->type) {
2140         case MONO_TYPE_VOID:
2141                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2142         case MONO_TYPE_I1:
2143         case MONO_TYPE_U1:
2144         case MONO_TYPE_I2:
2145         case MONO_TYPE_U2:
2146         case MONO_TYPE_I4:
2147         case MONO_TYPE_U4:
2148                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2149         case MONO_TYPE_I:
2150         case MONO_TYPE_U:
2151         case MONO_TYPE_PTR:
2152         case MONO_TYPE_FNPTR:
2153                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2154         case MONO_TYPE_CLASS:
2155         case MONO_TYPE_STRING:
2156         case MONO_TYPE_OBJECT:
2157         case MONO_TYPE_SZARRAY:
2158         case MONO_TYPE_ARRAY:
2159                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2160         case MONO_TYPE_I8:
2161         case MONO_TYPE_U8:
2162                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2163         case MONO_TYPE_R4:
2164                 if (cfg->r4fp)
2165                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2166                 else
2167                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2168         case MONO_TYPE_R8:
2169                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2170         case MONO_TYPE_VALUETYPE:
2171                 if (type->data.klass->enumtype) {
2172                         type = mono_class_enum_basetype (type->data.klass);
2173                         goto handle_enum;
2174                 } else
2175                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2176         case MONO_TYPE_TYPEDBYREF:
2177                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2178         case MONO_TYPE_GENERICINST:
2179                 type = &type->data.generic_class->container_class->byval_arg;
2180                 goto handle_enum;
2181         case MONO_TYPE_VAR:
2182         case MONO_TYPE_MVAR:
2183                 /* gsharedvt */
2184                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2185         default:
2186                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2187         }
2188         return -1;
2189 }
2190
2191 //XXX this ignores if t is byref
2192 #define MONO_TYPE_IS_PRIMITIVE_SCALAR(t) ((((((t)->type >= MONO_TYPE_BOOLEAN && (t)->type <= MONO_TYPE_U8) || ((t)->type >= MONO_TYPE_I && (t)->type <= MONO_TYPE_U)))))
2193
2194 /*
2195  * target_type_is_incompatible:
2196  * @cfg: MonoCompile context
2197  *
2198  * Check that the item @arg on the evaluation stack can be stored
2199  * in the target type (can be a local, or field, etc).
2200  * The cfg arg can be used to check if we need verification or just
2201  * validity checks.
2202  *
2203  * Returns: non-0 value if arg can't be stored on a target.
2204  */
2205 static int
2206 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2207 {
2208         MonoType *simple_type;
2209         MonoClass *klass;
2210
2211         if (target->byref) {
2212                 /* FIXME: check that the pointed to types match */
2213                 if (arg->type == STACK_MP) {
2214                         if (cfg->verbose_level) printf ("ok\n");
2215                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
2216                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
2217                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
2218
2219                         /* if the target is native int& or same type */
2220                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
2221                                 return 0;
2222
2223                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
2224                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
2225                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
2226                                 return 0;
2227                         return 1;
2228                 }
2229                 if (arg->type == STACK_PTR)
2230                         return 0;
2231                 return 1;
2232         }
2233
2234         simple_type = mini_get_underlying_type (target);
2235         switch (simple_type->type) {
2236         case MONO_TYPE_VOID:
2237                 return 1;
2238         case MONO_TYPE_I1:
2239         case MONO_TYPE_U1:
2240         case MONO_TYPE_I2:
2241         case MONO_TYPE_U2:
2242         case MONO_TYPE_I4:
2243         case MONO_TYPE_U4:
2244                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2245                         return 1;
2246                 return 0;
2247         case MONO_TYPE_PTR:
2248                 /* STACK_MP is needed when setting pinned locals */
2249                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2250                         return 1;
2251                 return 0;
2252         case MONO_TYPE_I:
2253         case MONO_TYPE_U:
2254         case MONO_TYPE_FNPTR:
2255                 /*
2256                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2257                  * in native int. (#688008).
2258                  */
2259                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2260                         return 1;
2261                 return 0;
2262         case MONO_TYPE_CLASS:
2263         case MONO_TYPE_STRING:
2264         case MONO_TYPE_OBJECT:
2265         case MONO_TYPE_SZARRAY:
2266         case MONO_TYPE_ARRAY:
2267                 if (arg->type != STACK_OBJ)
2268                         return 1;
2269                 /* FIXME: check type compatibility */
2270                 return 0;
2271         case MONO_TYPE_I8:
2272         case MONO_TYPE_U8:
2273                 if (arg->type != STACK_I8)
2274                         return 1;
2275                 return 0;
2276         case MONO_TYPE_R4:
2277                 if (arg->type != cfg->r4_stack_type)
2278                         return 1;
2279                 return 0;
2280         case MONO_TYPE_R8:
2281                 if (arg->type != STACK_R8)
2282                         return 1;
2283                 return 0;
2284         case MONO_TYPE_VALUETYPE:
2285                 if (arg->type != STACK_VTYPE)
2286                         return 1;
2287                 klass = mono_class_from_mono_type (simple_type);
2288                 if (klass != arg->klass)
2289                         return 1;
2290                 return 0;
2291         case MONO_TYPE_TYPEDBYREF:
2292                 if (arg->type != STACK_VTYPE)
2293                         return 1;
2294                 klass = mono_class_from_mono_type (simple_type);
2295                 if (klass != arg->klass)
2296                         return 1;
2297                 return 0;
2298         case MONO_TYPE_GENERICINST:
2299                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2300                         MonoClass *target_class;
2301                         if (arg->type != STACK_VTYPE)
2302                                 return 1;
2303                         klass = mono_class_from_mono_type (simple_type);
2304                         target_class = mono_class_from_mono_type (target);
2305                         /* The second cases is needed when doing partial sharing */
2306                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2307                                 return 1;
2308                         return 0;
2309                 } else {
2310                         if (arg->type != STACK_OBJ)
2311                                 return 1;
2312                         /* FIXME: check type compatibility */
2313                         return 0;
2314                 }
2315         case MONO_TYPE_VAR:
2316         case MONO_TYPE_MVAR:
2317                 g_assert (cfg->gshared);
2318                 if (mini_type_var_is_vt (simple_type)) {
2319                         if (arg->type != STACK_VTYPE)
2320                                 return 1;
2321                 } else {
2322                         if (arg->type != STACK_OBJ)
2323                                 return 1;
2324                 }
2325                 return 0;
2326         default:
2327                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2328         }
2329         return 1;
2330 }
2331
2332 /*
2333  * Prepare arguments for passing to a function call.
2334  * Return a non-zero value if the arguments can't be passed to the given
2335  * signature.
2336  * The type checks are not yet complete and some conversions may need
2337  * casts on 32 or 64 bit architectures.
2338  *
2339  * FIXME: implement this using target_type_is_incompatible ()
2340  */
2341 static int
2342 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2343 {
2344         MonoType *simple_type;
2345         int i;
2346
2347         if (sig->hasthis) {
2348                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2349                         return 1;
2350                 args++;
2351         }
2352         for (i = 0; i < sig->param_count; ++i) {
2353                 if (sig->params [i]->byref) {
2354                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2355                                 return 1;
2356                         continue;
2357                 }
2358                 simple_type = mini_get_underlying_type (sig->params [i]);
2359 handle_enum:
2360                 switch (simple_type->type) {
2361                 case MONO_TYPE_VOID:
2362                         return 1;
2363                         continue;
2364                 case MONO_TYPE_I1:
2365                 case MONO_TYPE_U1:
2366                 case MONO_TYPE_I2:
2367                 case MONO_TYPE_U2:
2368                 case MONO_TYPE_I4:
2369                 case MONO_TYPE_U4:
2370                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2371                                 return 1;
2372                         continue;
2373                 case MONO_TYPE_I:
2374                 case MONO_TYPE_U:
2375                 case MONO_TYPE_PTR:
2376                 case MONO_TYPE_FNPTR:
2377                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2378                                 return 1;
2379                         continue;
2380                 case MONO_TYPE_CLASS:
2381                 case MONO_TYPE_STRING:
2382                 case MONO_TYPE_OBJECT:
2383                 case MONO_TYPE_SZARRAY:
2384                 case MONO_TYPE_ARRAY:
2385                         if (args [i]->type != STACK_OBJ)
2386                                 return 1;
2387                         continue;
2388                 case MONO_TYPE_I8:
2389                 case MONO_TYPE_U8:
2390                         if (args [i]->type != STACK_I8)
2391                                 return 1;
2392                         continue;
2393                 case MONO_TYPE_R4:
2394                         if (args [i]->type != cfg->r4_stack_type)
2395                                 return 1;
2396                         continue;
2397                 case MONO_TYPE_R8:
2398                         if (args [i]->type != STACK_R8)
2399                                 return 1;
2400                         continue;
2401                 case MONO_TYPE_VALUETYPE:
2402                         if (simple_type->data.klass->enumtype) {
2403                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2404                                 goto handle_enum;
2405                         }
2406                         if (args [i]->type != STACK_VTYPE)
2407                                 return 1;
2408                         continue;
2409                 case MONO_TYPE_TYPEDBYREF:
2410                         if (args [i]->type != STACK_VTYPE)
2411                                 return 1;
2412                         continue;
2413                 case MONO_TYPE_GENERICINST:
2414                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2415                         goto handle_enum;
2416                 case MONO_TYPE_VAR:
2417                 case MONO_TYPE_MVAR:
2418                         /* gsharedvt */
2419                         if (args [i]->type != STACK_VTYPE)
2420                                 return 1;
2421                         continue;
2422                 default:
2423                         g_error ("unknown type 0x%02x in check_call_signature",
2424                                  simple_type->type);
2425                 }
2426         }
2427         return 0;
2428 }
2429
2430 static int
2431 callvirt_to_call (int opcode)
2432 {
2433         switch (opcode) {
2434         case OP_CALL_MEMBASE:
2435                 return OP_CALL;
2436         case OP_VOIDCALL_MEMBASE:
2437                 return OP_VOIDCALL;
2438         case OP_FCALL_MEMBASE:
2439                 return OP_FCALL;
2440         case OP_RCALL_MEMBASE:
2441                 return OP_RCALL;
2442         case OP_VCALL_MEMBASE:
2443                 return OP_VCALL;
2444         case OP_LCALL_MEMBASE:
2445                 return OP_LCALL;
2446         default:
2447                 g_assert_not_reached ();
2448         }
2449
2450         return -1;
2451 }
2452
2453 static int
2454 callvirt_to_call_reg (int opcode)
2455 {
2456         switch (opcode) {
2457         case OP_CALL_MEMBASE:
2458                 return OP_CALL_REG;
2459         case OP_VOIDCALL_MEMBASE:
2460                 return OP_VOIDCALL_REG;
2461         case OP_FCALL_MEMBASE:
2462                 return OP_FCALL_REG;
2463         case OP_RCALL_MEMBASE:
2464                 return OP_RCALL_REG;
2465         case OP_VCALL_MEMBASE:
2466                 return OP_VCALL_REG;
2467         case OP_LCALL_MEMBASE:
2468                 return OP_LCALL_REG;
2469         default:
2470                 g_assert_not_reached ();
2471         }
2472
2473         return -1;
2474 }
2475
2476 /* Either METHOD or IMT_ARG needs to be set */
2477 static void
2478 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2479 {
2480         int method_reg;
2481
2482         if (COMPILE_LLVM (cfg)) {
2483                 if (imt_arg) {
2484                         method_reg = alloc_preg (cfg);
2485                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2486                 } else {
2487                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2488                         method_reg = ins->dreg;
2489                 }
2490
2491 #ifdef ENABLE_LLVM
2492                 call->imt_arg_reg = method_reg;
2493 #endif
2494                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2495                 return;
2496         }
2497
2498         if (imt_arg) {
2499                 method_reg = alloc_preg (cfg);
2500                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2501         } else {
2502                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2503                 method_reg = ins->dreg;
2504         }
2505
2506         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2507 }
2508
2509 static MonoJumpInfo *
2510 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2511 {
2512         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2513
2514         ji->ip.i = ip;
2515         ji->type = type;
2516         ji->data.target = target;
2517
2518         return ji;
2519 }
2520
2521 static int
2522 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2523 {
2524         if (cfg->gshared)
2525                 return mono_class_check_context_used (klass);
2526         else
2527                 return 0;
2528 }
2529
2530 static int
2531 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2532 {
2533         if (cfg->gshared)
2534                 return mono_method_check_context_used (method);
2535         else
2536                 return 0;
2537 }
2538
2539 /*
2540  * check_method_sharing:
2541  *
2542  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2543  */
2544 static void
2545 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2546 {
2547         gboolean pass_vtable = FALSE;
2548         gboolean pass_mrgctx = FALSE;
2549
2550         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2551                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2552                 gboolean sharable = FALSE;
2553
2554                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2555                         sharable = TRUE;
2556
2557                 /*
2558                  * Pass vtable iff target method might
2559                  * be shared, which means that sharing
2560                  * is enabled for its class and its
2561                  * context is sharable (and it's not a
2562                  * generic method).
2563                  */
2564                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2565                         pass_vtable = TRUE;
2566         }
2567
2568         if (mini_method_get_context (cmethod) &&
2569                 mini_method_get_context (cmethod)->method_inst) {
2570                 g_assert (!pass_vtable);
2571
2572                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2573                         pass_mrgctx = TRUE;
2574                 } else {
2575                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2576                                 pass_mrgctx = TRUE;
2577                 }
2578         }
2579
2580         if (out_pass_vtable)
2581                 *out_pass_vtable = pass_vtable;
2582         if (out_pass_mrgctx)
2583                 *out_pass_mrgctx = pass_mrgctx;
2584 }
2585
2586 inline static MonoCallInst *
2587 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2588                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2589 {
2590         MonoType *sig_ret;
2591         MonoCallInst *call;
2592 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2593         int i;
2594 #endif
2595
2596         if (cfg->llvm_only)
2597                 tail = FALSE;
2598
2599         if (tail) {
2600                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2601
2602                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2603         } else
2604                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2605
2606         call->args = args;
2607         call->signature = sig;
2608         call->rgctx_reg = rgctx;
2609         sig_ret = mini_get_underlying_type (sig->ret);
2610
2611         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2612
2613         if (tail) {
2614                 if (mini_type_is_vtype (sig_ret)) {
2615                         call->vret_var = cfg->vret_addr;
2616                         //g_assert_not_reached ();
2617                 }
2618         } else if (mini_type_is_vtype (sig_ret)) {
2619                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2620                 MonoInst *loada;
2621
2622                 temp->backend.is_pinvoke = sig->pinvoke;
2623
2624                 /*
2625                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2626                  * address of return value to increase optimization opportunities.
2627                  * Before vtype decomposition, the dreg of the call ins itself represents the
2628                  * fact the call modifies the return value. After decomposition, the call will
2629                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2630                  * will be transformed into an LDADDR.
2631                  */
2632                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2633                 loada->dreg = alloc_preg (cfg);
2634                 loada->inst_p0 = temp;
2635                 /* We reference the call too since call->dreg could change during optimization */
2636                 loada->inst_p1 = call;
2637                 MONO_ADD_INS (cfg->cbb, loada);
2638
2639                 call->inst.dreg = temp->dreg;
2640
2641                 call->vret_var = loada;
2642         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2643                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2644
2645 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2646         if (COMPILE_SOFT_FLOAT (cfg)) {
2647                 /*
2648                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2649                  * an icall, but that cannot be done during the call sequence since it would clobber
2650                  * the call registers + the stack. So we do it before emitting the call.
2651                  */
2652                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2653                         MonoType *t;
2654                         MonoInst *in = call->args [i];
2655
2656                         if (i >= sig->hasthis)
2657                                 t = sig->params [i - sig->hasthis];
2658                         else
2659                                 t = &mono_defaults.int_class->byval_arg;
2660                         t = mono_type_get_underlying_type (t);
2661
2662                         if (!t->byref && t->type == MONO_TYPE_R4) {
2663                                 MonoInst *iargs [1];
2664                                 MonoInst *conv;
2665
2666                                 iargs [0] = in;
2667                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2668
2669                                 /* The result will be in an int vreg */
2670                                 call->args [i] = conv;
2671                         }
2672                 }
2673         }
2674 #endif
2675
2676         call->need_unbox_trampoline = unbox_trampoline;
2677
2678 #ifdef ENABLE_LLVM
2679         if (COMPILE_LLVM (cfg))
2680                 mono_llvm_emit_call (cfg, call);
2681         else
2682                 mono_arch_emit_call (cfg, call);
2683 #else
2684         mono_arch_emit_call (cfg, call);
2685 #endif
2686
2687         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2688         cfg->flags |= MONO_CFG_HAS_CALLS;
2689
2690         return call;
2691 }
2692
2693 static void
2694 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2695 {
2696         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2697         cfg->uses_rgctx_reg = TRUE;
2698         call->rgctx_reg = TRUE;
2699 #ifdef ENABLE_LLVM
2700         call->rgctx_arg_reg = rgctx_reg;
2701 #endif
2702 }
2703
2704 inline static MonoInst*
2705 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2706 {
2707         MonoCallInst *call;
2708         MonoInst *ins;
2709         int rgctx_reg = -1;
2710         gboolean check_sp = FALSE;
2711
2712         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2713                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2714
2715                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2716                         check_sp = TRUE;
2717         }
2718
2719         if (rgctx_arg) {
2720                 rgctx_reg = mono_alloc_preg (cfg);
2721                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2722         }
2723
2724         if (check_sp) {
2725                 if (!cfg->stack_inbalance_var)
2726                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2727
2728                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2729                 ins->dreg = cfg->stack_inbalance_var->dreg;
2730                 MONO_ADD_INS (cfg->cbb, ins);
2731         }
2732
2733         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2734
2735         call->inst.sreg1 = addr->dreg;
2736
2737         if (imt_arg)
2738                 emit_imt_argument (cfg, call, NULL, imt_arg);
2739
2740         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2741
2742         if (check_sp) {
2743                 int sp_reg;
2744
2745                 sp_reg = mono_alloc_preg (cfg);
2746
2747                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2748                 ins->dreg = sp_reg;
2749                 MONO_ADD_INS (cfg->cbb, ins);
2750
2751                 /* Restore the stack so we don't crash when throwing the exception */
2752                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2753                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2754                 MONO_ADD_INS (cfg->cbb, ins);
2755
2756                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2757                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2758         }
2759
2760         if (rgctx_arg)
2761                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2762
2763         return (MonoInst*)call;
2764 }
2765
2766 static MonoInst*
2767 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2768
2769 static MonoInst*
2770 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2771 static MonoInst*
2772 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2773
2774 static MonoInst*
2775 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2776                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2777 {
2778 #ifndef DISABLE_REMOTING
2779         gboolean might_be_remote = FALSE;
2780 #endif
2781         gboolean virtual_ = this_ins != NULL;
2782         gboolean enable_for_aot = TRUE;
2783         int context_used;
2784         MonoCallInst *call;
2785         MonoInst *call_target = NULL;
2786         int rgctx_reg = 0;
2787         gboolean need_unbox_trampoline;
2788
2789         if (!sig)
2790                 sig = mono_method_signature (method);
2791
2792         if (cfg->llvm_only && (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE))
2793                 g_assert_not_reached ();
2794
2795         if (rgctx_arg) {
2796                 rgctx_reg = mono_alloc_preg (cfg);
2797                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2798         }
2799
2800         if (method->string_ctor) {
2801                 /* Create the real signature */
2802                 /* FIXME: Cache these */
2803                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2804                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2805
2806                 sig = ctor_sig;
2807         }
2808
2809         context_used = mini_method_check_context_used (cfg, method);
2810
2811 #ifndef DISABLE_REMOTING
2812         might_be_remote = this_ins && sig->hasthis &&
2813                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2814                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2815
2816         if (might_be_remote && context_used) {
2817                 MonoInst *addr;
2818
2819                 g_assert (cfg->gshared);
2820
2821                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2822
2823                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2824         }
2825 #endif
2826
2827         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2828                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2829
2830         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2831
2832         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2833
2834 #ifndef DISABLE_REMOTING
2835         if (might_be_remote)
2836                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2837         else
2838 #endif
2839                 call->method = method;
2840         call->inst.flags |= MONO_INST_HAS_METHOD;
2841         call->inst.inst_left = this_ins;
2842         call->tail_call = tail;
2843
2844         if (virtual_) {
2845                 int vtable_reg, slot_reg, this_reg;
2846                 int offset;
2847
2848                 this_reg = this_ins->dreg;
2849
2850                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2851                         MonoInst *dummy_use;
2852
2853                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2854
2855                         /* Make a call to delegate->invoke_impl */
2856                         call->inst.inst_basereg = this_reg;
2857                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2858                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2859
2860                         /* We must emit a dummy use here because the delegate trampoline will
2861                         replace the 'this' argument with the delegate target making this activation
2862                         no longer a root for the delegate.
2863                         This is an issue for delegates that target collectible code such as dynamic
2864                         methods of GC'able assemblies.
2865
2866                         For a test case look into #667921.
2867
2868                         FIXME: a dummy use is not the best way to do it as the local register allocator
2869                         will put it on a caller save register and spil it around the call.
2870                         Ideally, we would either put it on a callee save register or only do the store part.
2871                          */
2872                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2873
2874                         return (MonoInst*)call;
2875                 }
2876
2877                 if ((!cfg->compile_aot || enable_for_aot) &&
2878                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2879                          (MONO_METHOD_IS_FINAL (method) &&
2880                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2881                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2882                         /*
2883                          * the method is not virtual, we just need to ensure this is not null
2884                          * and then we can call the method directly.
2885                          */
2886 #ifndef DISABLE_REMOTING
2887                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2888                                 /*
2889                                  * The check above ensures method is not gshared, this is needed since
2890                                  * gshared methods can't have wrappers.
2891                                  */
2892                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2893                         }
2894 #endif
2895
2896                         if (!method->string_ctor)
2897                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2898
2899                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2900                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2901                         /*
2902                          * the method is virtual, but we can statically dispatch since either
2903                          * it's class or the method itself are sealed.
2904                          * But first we need to ensure it's not a null reference.
2905                          */
2906                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2907
2908                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2909                 } else if (call_target) {
2910                         vtable_reg = alloc_preg (cfg);
2911                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2912
2913                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2914                         call->inst.sreg1 = call_target->dreg;
2915                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2916                 } else {
2917                         vtable_reg = alloc_preg (cfg);
2918                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2919                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2920                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2921                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2922                                 slot_reg = vtable_reg;
2923                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2924                         } else {
2925                                 slot_reg = vtable_reg;
2926                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2927                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2928                                 if (imt_arg) {
2929                                         g_assert (mono_method_signature (method)->generic_param_count);
2930                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2931                                 }
2932                         }
2933
2934                         call->inst.sreg1 = slot_reg;
2935                         call->inst.inst_offset = offset;
2936                         call->is_virtual = TRUE;
2937                 }
2938         }
2939
2940         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2941
2942         if (rgctx_arg)
2943                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2944
2945         return (MonoInst*)call;
2946 }
2947
2948 MonoInst*
2949 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2950 {
2951         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2952 }
2953
2954 MonoInst*
2955 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2956                                            MonoInst **args)
2957 {
2958         MonoCallInst *call;
2959
2960         g_assert (sig);
2961
2962         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2963         call->fptr = func;
2964
2965         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2966
2967         return (MonoInst*)call;
2968 }
2969
2970 MonoInst*
2971 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2972 {
2973         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2974
2975         g_assert (info);
2976
2977         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2978 }
2979
2980 /*
2981  * mono_emit_abs_call:
2982  *
2983  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2984  */
2985 inline static MonoInst*
2986 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2987                                         MonoMethodSignature *sig, MonoInst **args)
2988 {
2989         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2990         MonoInst *ins;
2991
2992         /*
2993          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2994          * handle it.
2995          */
2996         if (cfg->abs_patches == NULL)
2997                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2998         g_hash_table_insert (cfg->abs_patches, ji, ji);
2999         ins = mono_emit_native_call (cfg, ji, sig, args);
3000         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
3001         return ins;
3002 }
3003
3004 static MonoMethodSignature*
3005 sig_to_rgctx_sig (MonoMethodSignature *sig)
3006 {
3007         // FIXME: memory allocation
3008         MonoMethodSignature *res;
3009         int i;
3010
3011         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
3012         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
3013         res->param_count = sig->param_count + 1;
3014         for (i = 0; i < sig->param_count; ++i)
3015                 res->params [i] = sig->params [i];
3016         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
3017         return res;
3018 }
3019
3020 /* Make an indirect call to FSIG passing an additional argument */
3021 static MonoInst*
3022 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
3023 {
3024         MonoMethodSignature *csig;
3025         MonoInst *args_buf [16];
3026         MonoInst **args;
3027         int i, pindex, tmp_reg;
3028
3029         /* Make a call with an rgctx/extra arg */
3030         if (fsig->param_count + 2 < 16)
3031                 args = args_buf;
3032         else
3033                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
3034         pindex = 0;
3035         if (fsig->hasthis)
3036                 args [pindex ++] = orig_args [0];
3037         for (i = 0; i < fsig->param_count; ++i)
3038                 args [pindex ++] = orig_args [fsig->hasthis + i];
3039         tmp_reg = alloc_preg (cfg);
3040         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
3041         csig = sig_to_rgctx_sig (fsig);
3042         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
3043 }
3044
3045 /* Emit an indirect call to the function descriptor ADDR */
3046 static MonoInst*
3047 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
3048 {
3049         int addr_reg, arg_reg;
3050         MonoInst *call_target;
3051
3052         g_assert (cfg->llvm_only);
3053
3054         /*
3055          * addr points to a <addr, arg> pair, load both of them, and
3056          * make a call to addr, passing arg as an extra arg.
3057          */
3058         addr_reg = alloc_preg (cfg);
3059         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
3060         arg_reg = alloc_preg (cfg);
3061         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
3062
3063         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
3064 }
3065
3066 static gboolean
3067 direct_icalls_enabled (MonoCompile *cfg)
3068 {
3069         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3070 #ifdef TARGET_AMD64
3071         if (cfg->compile_llvm)
3072                 return FALSE;
3073 #endif
3074         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
3075                 return FALSE;
3076         return TRUE;
3077 }
3078
3079 MonoInst*
3080 mono_emit_jit_icall_by_info (MonoCompile *cfg, MonoJitICallInfo *info, MonoInst **args)
3081 {
3082         /*
3083          * Call the jit icall without a wrapper if possible.
3084          * The wrapper is needed for the following reasons:
3085          * - to handle exceptions thrown using mono_raise_exceptions () from the
3086          *   icall function. The EH code needs the lmf frame pushed by the
3087          *   wrapper to be able to unwind back to managed code.
3088          * - to be able to do stack walks for asynchronously suspended
3089          *   threads when debugging.
3090          */
3091         if (info->no_raise && direct_icalls_enabled (cfg)) {
3092                 char *name;
3093                 int costs;
3094
3095                 if (!info->wrapper_method) {
3096                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
3097                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
3098                         g_free (name);
3099                         mono_memory_barrier ();
3100                 }
3101
3102                 /*
3103                  * Inline the wrapper method, which is basically a call to the C icall, and
3104                  * an exception check.
3105                  */
3106                 costs = inline_method (cfg, info->wrapper_method, NULL,
3107                                                            args, NULL, cfg->real_offset, TRUE);
3108                 g_assert (costs > 0);
3109                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
3110
3111                 return args [0];
3112         } else {
3113                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3114         }
3115 }
3116
3117 static MonoInst*
3118 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3119 {
3120         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3121                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3122                         int widen_op = -1;
3123
3124                         /*
3125                          * Native code might return non register sized integers
3126                          * without initializing the upper bits.
3127                          */
3128                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3129                         case OP_LOADI1_MEMBASE:
3130                                 widen_op = OP_ICONV_TO_I1;
3131                                 break;
3132                         case OP_LOADU1_MEMBASE:
3133                                 widen_op = OP_ICONV_TO_U1;
3134                                 break;
3135                         case OP_LOADI2_MEMBASE:
3136                                 widen_op = OP_ICONV_TO_I2;
3137                                 break;
3138                         case OP_LOADU2_MEMBASE:
3139                                 widen_op = OP_ICONV_TO_U2;
3140                                 break;
3141                         default:
3142                                 break;
3143                         }
3144
3145                         if (widen_op != -1) {
3146                                 int dreg = alloc_preg (cfg);
3147                                 MonoInst *widen;
3148
3149                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3150                                 widen->type = ins->type;
3151                                 ins = widen;
3152                         }
3153                 }
3154         }
3155
3156         return ins;
3157 }
3158
3159 static MonoMethod*
3160 get_memcpy_method (void)
3161 {
3162         static MonoMethod *memcpy_method = NULL;
3163         if (!memcpy_method) {
3164                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3165                 if (!memcpy_method)
3166                         g_error ("Old corlib found. Install a new one");
3167         }
3168         return memcpy_method;
3169 }
3170
3171 static void
3172 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3173 {
3174         MonoClassField *field;
3175         gpointer iter = NULL;
3176
3177         while ((field = mono_class_get_fields (klass, &iter))) {
3178                 int foffset;
3179
3180                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3181                         continue;
3182                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3183                 if (mini_type_is_reference (mono_field_get_type (field))) {
3184                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3185                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3186                 } else {
3187                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3188                         if (field_class->has_references)
3189                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3190                 }
3191         }
3192 }
3193
3194 static void
3195 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3196 {
3197         int card_table_shift_bits;
3198         gpointer card_table_mask;
3199         guint8 *card_table;
3200         MonoInst *dummy_use;
3201         int nursery_shift_bits;
3202         size_t nursery_size;
3203
3204         if (!cfg->gen_write_barriers)
3205                 return;
3206
3207         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3208
3209         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3210
3211         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3212                 MonoInst *wbarrier;
3213
3214                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3215                 wbarrier->sreg1 = ptr->dreg;
3216                 wbarrier->sreg2 = value->dreg;
3217                 MONO_ADD_INS (cfg->cbb, wbarrier);
3218         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3219                 int offset_reg = alloc_preg (cfg);
3220                 int card_reg;
3221                 MonoInst *ins;
3222
3223                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3224                 if (card_table_mask)
3225                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3226
3227                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3228                  * IMM's larger than 32bits.
3229                  */
3230                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3231                 card_reg = ins->dreg;
3232
3233                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3234                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3235         } else {
3236                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3237                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3238         }
3239
3240         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3241 }
3242
3243 static gboolean
3244 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3245 {
3246         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3247         unsigned need_wb = 0;
3248
3249         if (align == 0)
3250                 align = 4;
3251
3252         /*types with references can't have alignment smaller than sizeof(void*) */
3253         if (align < SIZEOF_VOID_P)
3254                 return FALSE;
3255
3256         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3257         if (size > 32 * SIZEOF_VOID_P)
3258                 return FALSE;
3259
3260         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3261
3262         /* We don't unroll more than 5 stores to avoid code bloat. */
3263         if (size > 5 * SIZEOF_VOID_P) {
3264                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3265                 size += (SIZEOF_VOID_P - 1);
3266                 size &= ~(SIZEOF_VOID_P - 1);
3267
3268                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3269                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3270                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3271                 return TRUE;
3272         }
3273
3274         destreg = iargs [0]->dreg;
3275         srcreg = iargs [1]->dreg;
3276         offset = 0;
3277
3278         dest_ptr_reg = alloc_preg (cfg);
3279         tmp_reg = alloc_preg (cfg);
3280
3281         /*tmp = dreg*/
3282         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3283
3284         while (size >= SIZEOF_VOID_P) {
3285                 MonoInst *load_inst;
3286                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3287                 load_inst->dreg = tmp_reg;
3288                 load_inst->inst_basereg = srcreg;
3289                 load_inst->inst_offset = offset;
3290                 MONO_ADD_INS (cfg->cbb, load_inst);
3291
3292                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3293
3294                 if (need_wb & 0x1)
3295                         emit_write_barrier (cfg, iargs [0], load_inst);
3296
3297                 offset += SIZEOF_VOID_P;
3298                 size -= SIZEOF_VOID_P;
3299                 need_wb >>= 1;
3300
3301                 /*tmp += sizeof (void*)*/
3302                 if (size >= SIZEOF_VOID_P) {
3303                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3304                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3305                 }
3306         }
3307
3308         /* Those cannot be references since size < sizeof (void*) */
3309         while (size >= 4) {
3310                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3311                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3312                 offset += 4;
3313                 size -= 4;
3314         }
3315
3316         while (size >= 2) {
3317                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3318                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3319                 offset += 2;
3320                 size -= 2;
3321         }
3322
3323         while (size >= 1) {
3324                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3325                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3326                 offset += 1;
3327                 size -= 1;
3328         }
3329
3330         return TRUE;
3331 }
3332
3333 /*
3334  * Emit code to copy a valuetype of type @klass whose address is stored in
3335  * @src->dreg to memory whose address is stored at @dest->dreg.
3336  */
3337 void
3338 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3339 {
3340         MonoInst *iargs [4];
3341         int n;
3342         guint32 align = 0;
3343         MonoMethod *memcpy_method;
3344         MonoInst *size_ins = NULL;
3345         MonoInst *memcpy_ins = NULL;
3346
3347         g_assert (klass);
3348         if (cfg->gshared)
3349                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3350
3351         /*
3352          * This check breaks with spilled vars... need to handle it during verification anyway.
3353          * g_assert (klass && klass == src->klass && klass == dest->klass);
3354          */
3355
3356         if (mini_is_gsharedvt_klass (klass)) {
3357                 g_assert (!native);
3358                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3359                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3360         }
3361
3362         if (native)
3363                 n = mono_class_native_size (klass, &align);
3364         else
3365                 n = mono_class_value_size (klass, &align);
3366
3367         /* if native is true there should be no references in the struct */
3368         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3369                 /* Avoid barriers when storing to the stack */
3370                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3371                           (dest->opcode == OP_LDADDR))) {
3372                         int context_used;
3373
3374                         iargs [0] = dest;
3375                         iargs [1] = src;
3376
3377                         context_used = mini_class_check_context_used (cfg, klass);
3378
3379                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3380                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3381                                 return;
3382                         } else if (context_used) {
3383                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3384                         }  else {
3385                                 iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3386                                 if (!cfg->compile_aot)
3387                                         mono_class_compute_gc_descriptor (klass);
3388                         }
3389
3390                         if (size_ins)
3391                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3392                         else
3393                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3394                         return;
3395                 }
3396         }
3397
3398         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3399                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3400                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3401         } else {
3402                 iargs [0] = dest;
3403                 iargs [1] = src;
3404                 if (size_ins)
3405                         iargs [2] = size_ins;
3406                 else
3407                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3408
3409                 memcpy_method = get_memcpy_method ();
3410                 if (memcpy_ins)
3411                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3412                 else
3413                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3414         }
3415 }
3416
3417 static MonoMethod*
3418 get_memset_method (void)
3419 {
3420         static MonoMethod *memset_method = NULL;
3421         if (!memset_method) {
3422                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3423                 if (!memset_method)
3424                         g_error ("Old corlib found. Install a new one");
3425         }
3426         return memset_method;
3427 }
3428
3429 void
3430 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3431 {
3432         MonoInst *iargs [3];
3433         int n;
3434         guint32 align;
3435         MonoMethod *memset_method;
3436         MonoInst *size_ins = NULL;
3437         MonoInst *bzero_ins = NULL;
3438         static MonoMethod *bzero_method;
3439
3440         /* FIXME: Optimize this for the case when dest is an LDADDR */
3441         mono_class_init (klass);
3442         if (mini_is_gsharedvt_klass (klass)) {
3443                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3444                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3445                 if (!bzero_method)
3446                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3447                 g_assert (bzero_method);
3448                 iargs [0] = dest;
3449                 iargs [1] = size_ins;
3450                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3451                 return;
3452         }
3453
3454         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3455
3456         n = mono_class_value_size (klass, &align);
3457
3458         if (n <= sizeof (gpointer) * 8) {
3459                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3460         }
3461         else {
3462                 memset_method = get_memset_method ();
3463                 iargs [0] = dest;
3464                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3465                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3466                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3467         }
3468 }
3469
3470 /*
3471  * emit_get_rgctx:
3472  *
3473  *   Emit IR to return either the this pointer for instance method,
3474  * or the mrgctx for static methods.
3475  */
3476 static MonoInst*
3477 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3478 {
3479         MonoInst *this_ins = NULL;
3480
3481         g_assert (cfg->gshared);
3482
3483         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3484                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3485                         !method->klass->valuetype)
3486                 EMIT_NEW_ARGLOAD (cfg, this_ins, 0);
3487
3488         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3489                 MonoInst *mrgctx_loc, *mrgctx_var;
3490
3491                 g_assert (!this_ins);
3492                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3493
3494                 mrgctx_loc = mono_get_vtable_var (cfg);
3495                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3496
3497                 return mrgctx_var;
3498         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3499                 MonoInst *vtable_loc, *vtable_var;
3500
3501                 g_assert (!this_ins);
3502
3503                 vtable_loc = mono_get_vtable_var (cfg);
3504                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3505
3506                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3507                         MonoInst *mrgctx_var = vtable_var;
3508                         int vtable_reg;
3509
3510                         vtable_reg = alloc_preg (cfg);
3511                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3512                         vtable_var->type = STACK_PTR;
3513                 }
3514
3515                 return vtable_var;
3516         } else {
3517                 MonoInst *ins;
3518                 int vtable_reg;
3519
3520                 vtable_reg = alloc_preg (cfg);
3521                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3522                 return ins;
3523         }
3524 }
3525
3526 static MonoJumpInfoRgctxEntry *
3527 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3528 {
3529         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3530         res->method = method;
3531         res->in_mrgctx = in_mrgctx;
3532         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3533         res->data->type = patch_type;
3534         res->data->data.target = patch_data;
3535         res->info_type = info_type;
3536
3537         return res;
3538 }
3539
3540 static inline MonoInst*
3541 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3542 {
3543         MonoInst *args [16];
3544         MonoInst *call;
3545
3546         // FIXME: No fastpath since the slot is not a compile time constant
3547         args [0] = rgctx;
3548         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3549         if (entry->in_mrgctx)
3550                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3551         else
3552                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3553         return call;
3554 #if 0
3555         /*
3556          * FIXME: This can be called during decompose, which is a problem since it creates
3557          * new bblocks.
3558          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3559          */
3560         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3561         gboolean mrgctx;
3562         MonoBasicBlock *is_null_bb, *end_bb;
3563         MonoInst *res, *ins, *call;
3564         MonoInst *args[16];
3565
3566         slot = mini_get_rgctx_entry_slot (entry);
3567
3568         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3569         index = MONO_RGCTX_SLOT_INDEX (slot);
3570         if (mrgctx)
3571                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3572         for (depth = 0; ; ++depth) {
3573                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3574
3575                 if (index < size - 1)
3576                         break;
3577                 index -= size - 1;
3578         }
3579
3580         NEW_BBLOCK (cfg, end_bb);
3581         NEW_BBLOCK (cfg, is_null_bb);
3582
3583         if (mrgctx) {
3584                 rgctx_reg = rgctx->dreg;
3585         } else {
3586                 rgctx_reg = alloc_preg (cfg);
3587
3588                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3589                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3590                 NEW_BBLOCK (cfg, is_null_bb);
3591
3592                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3593                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3594         }
3595
3596         for (i = 0; i < depth; ++i) {
3597                 int array_reg = alloc_preg (cfg);
3598
3599                 /* load ptr to next array */
3600                 if (mrgctx && i == 0)
3601                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3602                 else
3603                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3604                 rgctx_reg = array_reg;
3605                 /* is the ptr null? */
3606                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3607                 /* if yes, jump to actual trampoline */
3608                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3609         }
3610
3611         /* fetch slot */
3612         val_reg = alloc_preg (cfg);
3613         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3614         /* is the slot null? */
3615         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3616         /* if yes, jump to actual trampoline */
3617         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3618
3619         /* Fastpath */
3620         res_reg = alloc_preg (cfg);
3621         MONO_INST_NEW (cfg, ins, OP_MOVE);
3622         ins->dreg = res_reg;
3623         ins->sreg1 = val_reg;
3624         MONO_ADD_INS (cfg->cbb, ins);
3625         res = ins;
3626         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3627
3628         /* Slowpath */
3629         MONO_START_BB (cfg, is_null_bb);
3630         args [0] = rgctx;
3631         EMIT_NEW_ICONST (cfg, args [1], index);
3632         if (mrgctx)
3633                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3634         else
3635                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3636         MONO_INST_NEW (cfg, ins, OP_MOVE);
3637         ins->dreg = res_reg;
3638         ins->sreg1 = call->dreg;
3639         MONO_ADD_INS (cfg->cbb, ins);
3640         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3641
3642         MONO_START_BB (cfg, end_bb);
3643
3644         return res;
3645 #endif
3646 }
3647
3648 /*
3649  * emit_rgctx_fetch:
3650  *
3651  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3652  * given by RGCTX.
3653  */
3654 static inline MonoInst*
3655 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3656 {
3657         if (cfg->llvm_only)
3658                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3659         else
3660                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3661 }
3662
3663 static MonoInst*
3664 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3665                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3666 {
3667         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3668         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3669
3670         return emit_rgctx_fetch (cfg, rgctx, entry);
3671 }
3672
3673 static MonoInst*
3674 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3675                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3676 {
3677         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3678         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3679
3680         return emit_rgctx_fetch (cfg, rgctx, entry);
3681 }
3682
3683 static MonoInst*
3684 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3685                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3686 {
3687         MonoJumpInfoGSharedVtCall *call_info;
3688         MonoJumpInfoRgctxEntry *entry;
3689         MonoInst *rgctx;
3690
3691         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3692         call_info->sig = sig;
3693         call_info->method = cmethod;
3694
3695         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3696         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3697
3698         return emit_rgctx_fetch (cfg, rgctx, entry);
3699 }
3700
3701 /*
3702  * emit_get_rgctx_virt_method:
3703  *
3704  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3705  */
3706 static MonoInst*
3707 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3708                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3709 {
3710         MonoJumpInfoVirtMethod *info;
3711         MonoJumpInfoRgctxEntry *entry;
3712         MonoInst *rgctx;
3713
3714         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3715         info->klass = klass;
3716         info->method = virt_method;
3717
3718         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3719         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3720
3721         return emit_rgctx_fetch (cfg, rgctx, entry);
3722 }
3723
3724 static MonoInst*
3725 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3726                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3727 {
3728         MonoJumpInfoRgctxEntry *entry;
3729         MonoInst *rgctx;
3730
3731         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3732         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3733
3734         return emit_rgctx_fetch (cfg, rgctx, entry);
3735 }
3736
3737 /*
3738  * emit_get_rgctx_method:
3739  *
3740  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3741  * normal constants, else emit a load from the rgctx.
3742  */
3743 static MonoInst*
3744 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3745                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3746 {
3747         if (!context_used) {
3748                 MonoInst *ins;
3749
3750                 switch (rgctx_type) {
3751                 case MONO_RGCTX_INFO_METHOD:
3752                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3753                         return ins;
3754                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3755                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3756                         return ins;
3757                 default:
3758                         g_assert_not_reached ();
3759                 }
3760         } else {
3761                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3762                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3763
3764                 return emit_rgctx_fetch (cfg, rgctx, entry);
3765         }
3766 }
3767
3768 static MonoInst*
3769 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3770                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3771 {
3772         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3773         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3774
3775         return emit_rgctx_fetch (cfg, rgctx, entry);
3776 }
3777
3778 static int
3779 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3780 {
3781         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3782         MonoRuntimeGenericContextInfoTemplate *template_;
3783         int i, idx;
3784
3785         g_assert (info);
3786
3787         for (i = 0; i < info->num_entries; ++i) {
3788                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3789
3790                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3791                         return i;
3792         }
3793
3794         if (info->num_entries == info->count_entries) {
3795                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3796                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3797
3798                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3799
3800                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3801                 info->entries = new_entries;
3802                 info->count_entries = new_count_entries;
3803         }
3804
3805         idx = info->num_entries;
3806         template_ = &info->entries [idx];
3807         template_->info_type = rgctx_type;
3808         template_->data = data;
3809
3810         info->num_entries ++;
3811
3812         return idx;
3813 }
3814
3815 /*
3816  * emit_get_gsharedvt_info:
3817  *
3818  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3819  */
3820 static MonoInst*
3821 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3822 {
3823         MonoInst *ins;
3824         int idx, dreg;
3825
3826         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3827         /* Load info->entries [idx] */
3828         dreg = alloc_preg (cfg);
3829         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3830
3831         return ins;
3832 }
3833
3834 static MonoInst*
3835 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3836 {
3837         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3838 }
3839
3840 /*
3841  * On return the caller must check @klass for load errors.
3842  */
3843 static void
3844 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3845 {
3846         MonoInst *vtable_arg;
3847         int context_used;
3848
3849         context_used = mini_class_check_context_used (cfg, klass);
3850
3851         if (context_used) {
3852                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3853                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3854         } else {
3855                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3856
3857                 if (!vtable)
3858                         return;
3859                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3860         }
3861
3862         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3863                 MonoInst *ins;
3864
3865                 /*
3866                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3867                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3868                  */
3869                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3870                 ins->sreg1 = vtable_arg->dreg;
3871                 MONO_ADD_INS (cfg->cbb, ins);
3872         } else {
3873                 static int byte_offset = -1;
3874                 static guint8 bitmask;
3875                 int bits_reg, inited_reg;
3876                 MonoBasicBlock *inited_bb;
3877                 MonoInst *args [16];
3878
3879                 if (byte_offset < 0)
3880                         mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3881
3882                 bits_reg = alloc_ireg (cfg);
3883                 inited_reg = alloc_ireg (cfg);
3884
3885                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3886                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3887
3888                 NEW_BBLOCK (cfg, inited_bb);
3889
3890                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3891                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3892
3893                 args [0] = vtable_arg;
3894                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3895
3896                 MONO_START_BB (cfg, inited_bb);
3897         }
3898 }
3899
3900 static void
3901 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3902 {
3903         MonoInst *ins;
3904
3905         if (cfg->gen_seq_points && cfg->method == method) {
3906                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3907                 if (nonempty_stack)
3908                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3909                 MONO_ADD_INS (cfg->cbb, ins);
3910         }
3911 }
3912
3913 static void
3914 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3915 {
3916         if (mini_get_debug_options ()->better_cast_details) {
3917                 int vtable_reg = alloc_preg (cfg);
3918                 int klass_reg = alloc_preg (cfg);
3919                 MonoBasicBlock *is_null_bb = NULL;
3920                 MonoInst *tls_get;
3921                 int to_klass_reg, context_used;
3922
3923                 if (null_check) {
3924                         NEW_BBLOCK (cfg, is_null_bb);
3925
3926                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3927                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3928                 }
3929
3930                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3931                 if (!tls_get) {
3932                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3933                         exit (1);
3934                 }
3935
3936                 MONO_ADD_INS (cfg->cbb, tls_get);
3937                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3938                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3939
3940                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3941
3942                 context_used = mini_class_check_context_used (cfg, klass);
3943                 if (context_used) {
3944                         MonoInst *class_ins;
3945
3946                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3947                         to_klass_reg = class_ins->dreg;
3948                 } else {
3949                         to_klass_reg = alloc_preg (cfg);
3950                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3951                 }
3952                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3953
3954                 if (null_check)
3955                         MONO_START_BB (cfg, is_null_bb);
3956         }
3957 }
3958
3959 static void
3960 reset_cast_details (MonoCompile *cfg)
3961 {
3962         /* Reset the variables holding the cast details */
3963         if (mini_get_debug_options ()->better_cast_details) {
3964                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3965
3966                 MONO_ADD_INS (cfg->cbb, tls_get);
3967                 /* It is enough to reset the from field */
3968                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3969         }
3970 }
3971
3972 /*
3973  * On return the caller must check @array_class for load errors
3974  */
3975 static void
3976 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3977 {
3978         int vtable_reg = alloc_preg (cfg);
3979         int context_used;
3980
3981         context_used = mini_class_check_context_used (cfg, array_class);
3982
3983         save_cast_details (cfg, array_class, obj->dreg, FALSE);
3984
3985         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3986
3987         if (cfg->opt & MONO_OPT_SHARED) {
3988                 int class_reg = alloc_preg (cfg);
3989                 MonoInst *ins;
3990
3991                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3992                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3993                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3994         } else if (context_used) {
3995                 MonoInst *vtable_ins;
3996
3997                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3998                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3999         } else {
4000                 if (cfg->compile_aot) {
4001                         int vt_reg;
4002                         MonoVTable *vtable;
4003
4004                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4005                                 return;
4006                         vt_reg = alloc_preg (cfg);
4007                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
4008                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
4009                 } else {
4010                         MonoVTable *vtable;
4011                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4012                                 return;
4013                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
4014                 }
4015         }
4016
4017         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
4018
4019         reset_cast_details (cfg);
4020 }
4021
4022 /**
4023  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
4024  * generic code is generated.
4025  */
4026 static MonoInst*
4027 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
4028 {
4029         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
4030
4031         if (context_used) {
4032                 MonoInst *rgctx, *addr;
4033
4034                 /* FIXME: What if the class is shared?  We might not
4035                    have to get the address of the method from the
4036                    RGCTX. */
4037                 addr = emit_get_rgctx_method (cfg, context_used, method,
4038                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4039                 if (cfg->llvm_only && cfg->gsharedvt) {
4040                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4041                 } else {
4042                         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4043
4044                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4045                 }
4046         } else {
4047                 gboolean pass_vtable, pass_mrgctx;
4048                 MonoInst *rgctx_arg = NULL;
4049
4050                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4051                 g_assert (!pass_mrgctx);
4052
4053                 if (pass_vtable) {
4054                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4055
4056                         g_assert (vtable);
4057                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4058                 }
4059
4060                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4061         }
4062 }
4063
4064 static MonoInst*
4065 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
4066 {
4067         MonoInst *add;
4068         int obj_reg;
4069         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
4070         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
4071         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
4072         int rank_reg = alloc_dreg (cfg ,STACK_I4);
4073
4074         obj_reg = sp [0]->dreg;
4075         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4076         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4077
4078         /* FIXME: generics */
4079         g_assert (klass->rank == 0);
4080
4081         // Check rank == 0
4082         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
4083         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4084
4085         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4086         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
4087
4088         if (context_used) {
4089                 MonoInst *element_class;
4090
4091                 /* This assertion is from the unboxcast insn */
4092                 g_assert (klass->rank == 0);
4093
4094                 element_class = emit_get_rgctx_klass (cfg, context_used,
4095                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
4096
4097                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
4098                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4099         } else {
4100                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
4101                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
4102                 reset_cast_details (cfg);
4103         }
4104
4105         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
4106         MONO_ADD_INS (cfg->cbb, add);
4107         add->type = STACK_MP;
4108         add->klass = klass;
4109
4110         return add;
4111 }
4112
4113 static MonoInst*
4114 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
4115 {
4116         MonoInst *addr, *klass_inst, *is_ref, *args[16];
4117         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4118         MonoInst *ins;
4119         int dreg, addr_reg;
4120
4121         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
4122
4123         /* obj */
4124         args [0] = obj;
4125
4126         /* klass */
4127         args [1] = klass_inst;
4128
4129         /* CASTCLASS */
4130         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
4131
4132         NEW_BBLOCK (cfg, is_ref_bb);
4133         NEW_BBLOCK (cfg, is_nullable_bb);
4134         NEW_BBLOCK (cfg, end_bb);
4135         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4136         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4137         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4138
4139         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4140         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4141
4142         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
4143         addr_reg = alloc_dreg (cfg, STACK_MP);
4144
4145         /* Non-ref case */
4146         /* UNBOX */
4147         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
4148         MONO_ADD_INS (cfg->cbb, addr);
4149
4150         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4151
4152         /* Ref case */
4153         MONO_START_BB (cfg, is_ref_bb);
4154
4155         /* Save the ref to a temporary */
4156         dreg = alloc_ireg (cfg);
4157         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
4158         addr->dreg = addr_reg;
4159         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
4160         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4161
4162         /* Nullable case */
4163         MONO_START_BB (cfg, is_nullable_bb);
4164
4165         {
4166                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
4167                 MonoInst *unbox_call;
4168                 MonoMethodSignature *unbox_sig;
4169
4170                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4171                 unbox_sig->ret = &klass->byval_arg;
4172                 unbox_sig->param_count = 1;
4173                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
4174
4175                 if (cfg->llvm_only)
4176                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
4177                 else
4178                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
4179
4180                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
4181                 addr->dreg = addr_reg;
4182         }
4183
4184         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4185
4186         /* End */
4187         MONO_START_BB (cfg, end_bb);
4188
4189         /* LDOBJ */
4190         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
4191
4192         return ins;
4193 }
4194
4195 /*
4196  * Returns NULL and set the cfg exception on error.
4197  */
4198 static MonoInst*
4199 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4200 {
4201         MonoInst *iargs [2];
4202         void *alloc_ftn;
4203
4204         if (context_used) {
4205                 MonoInst *data;
4206                 MonoRgctxInfoType rgctx_info;
4207                 MonoInst *iargs [2];
4208                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4209
4210                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4211
4212                 if (cfg->opt & MONO_OPT_SHARED)
4213                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4214                 else
4215                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4216                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4217
4218                 if (cfg->opt & MONO_OPT_SHARED) {
4219                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4220                         iargs [1] = data;
4221                         alloc_ftn = ves_icall_object_new;
4222                 } else {
4223                         iargs [0] = data;
4224                         alloc_ftn = ves_icall_object_new_specific;
4225                 }
4226
4227                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4228                         if (known_instance_size) {
4229                                 int size = mono_class_instance_size (klass);
4230                                 if (size < sizeof (MonoObject))
4231                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4232
4233                                 EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4234                         }
4235                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4236                 }
4237
4238                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4239         }
4240
4241         if (cfg->opt & MONO_OPT_SHARED) {
4242                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4243                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4244
4245                 alloc_ftn = ves_icall_object_new;
4246         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
4247                 /* This happens often in argument checking code, eg. throw new FooException... */
4248                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4249                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4250                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4251         } else {
4252                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4253                 MonoMethod *managed_alloc = NULL;
4254                 gboolean pass_lw;
4255
4256                 if (!vtable) {
4257                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4258                         cfg->exception_ptr = klass;
4259                         return NULL;
4260                 }
4261
4262                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4263
4264                 if (managed_alloc) {
4265                         int size = mono_class_instance_size (klass);
4266                         if (size < sizeof (MonoObject))
4267                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4268
4269                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4270                         EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4271                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4272                 }
4273                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4274                 if (pass_lw) {
4275                         guint32 lw = vtable->klass->instance_size;
4276                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4277                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4278                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4279                 }
4280                 else {
4281                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4282                 }
4283         }
4284
4285         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4286 }
4287
4288 /*
4289  * Returns NULL and set the cfg exception on error.
4290  */
4291 static MonoInst*
4292 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4293 {
4294         MonoInst *alloc, *ins;
4295
4296         if (mono_class_is_nullable (klass)) {
4297                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4298
4299                 if (context_used) {
4300                         if (cfg->llvm_only && cfg->gsharedvt) {
4301                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4302                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4303                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4304                         } else {
4305                                 /* FIXME: What if the class is shared?  We might not
4306                                    have to get the method address from the RGCTX. */
4307                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4308                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4309                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4310
4311                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4312                         }
4313                 } else {
4314                         gboolean pass_vtable, pass_mrgctx;
4315                         MonoInst *rgctx_arg = NULL;
4316
4317                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4318                         g_assert (!pass_mrgctx);
4319
4320                         if (pass_vtable) {
4321                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4322
4323                                 g_assert (vtable);
4324                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4325                         }
4326
4327                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4328                 }
4329         }
4330
4331         if (mini_is_gsharedvt_klass (klass)) {
4332                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4333                 MonoInst *res, *is_ref, *src_var, *addr;
4334                 int dreg;
4335
4336                 dreg = alloc_ireg (cfg);
4337
4338                 NEW_BBLOCK (cfg, is_ref_bb);
4339                 NEW_BBLOCK (cfg, is_nullable_bb);
4340                 NEW_BBLOCK (cfg, end_bb);
4341                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4342                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4343                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4344
4345                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4346                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4347
4348                 /* Non-ref case */
4349                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4350                 if (!alloc)
4351                         return NULL;
4352                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4353                 ins->opcode = OP_STOREV_MEMBASE;
4354
4355                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4356                 res->type = STACK_OBJ;
4357                 res->klass = klass;
4358                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4359
4360                 /* Ref case */
4361                 MONO_START_BB (cfg, is_ref_bb);
4362
4363                 /* val is a vtype, so has to load the value manually */
4364                 src_var = get_vreg_to_inst (cfg, val->dreg);
4365                 if (!src_var)
4366                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4367                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4368                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4369                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4370
4371                 /* Nullable case */
4372                 MONO_START_BB (cfg, is_nullable_bb);
4373
4374                 {
4375                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4376                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4377                         MonoInst *box_call;
4378                         MonoMethodSignature *box_sig;
4379
4380                         /*
4381                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4382                          * construct that method at JIT time, so have to do things by hand.
4383                          */
4384                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4385                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4386                         box_sig->param_count = 1;
4387                         box_sig->params [0] = &klass->byval_arg;
4388
4389                         if (cfg->llvm_only)
4390                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4391                         else
4392                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4393                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4394                         res->type = STACK_OBJ;
4395                         res->klass = klass;
4396                 }
4397
4398                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4399
4400                 MONO_START_BB (cfg, end_bb);
4401
4402                 return res;
4403         } else {
4404                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4405                 if (!alloc)
4406                         return NULL;
4407
4408                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4409                 return alloc;
4410         }
4411 }
4412
4413 static gboolean
4414 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4415 {
4416         int i;
4417         MonoGenericContainer *container;
4418         MonoGenericInst *ginst;
4419
4420         if (klass->generic_class) {
4421                 container = klass->generic_class->container_class->generic_container;
4422                 ginst = klass->generic_class->context.class_inst;
4423         } else if (klass->generic_container && context_used) {
4424                 container = klass->generic_container;
4425                 ginst = container->context.class_inst;
4426         } else {
4427                 return FALSE;
4428         }
4429
4430         for (i = 0; i < container->type_argc; ++i) {
4431                 MonoType *type;
4432                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4433                         continue;
4434                 type = ginst->type_argv [i];
4435                 if (mini_type_is_reference (type))
4436                         return TRUE;
4437         }
4438         return FALSE;
4439 }
4440
4441 static GHashTable* direct_icall_type_hash;
4442
4443 static gboolean
4444 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4445 {
4446         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4447         if (!direct_icalls_enabled (cfg))
4448                 return FALSE;
4449
4450         /*
4451          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4452          * Whitelist a few icalls for now.
4453          */
4454         if (!direct_icall_type_hash) {
4455                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4456
4457                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4458                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4459                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4460                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4461                 mono_memory_barrier ();
4462                 direct_icall_type_hash = h;
4463         }
4464
4465         if (cmethod->klass == mono_defaults.math_class)
4466                 return TRUE;
4467         /* No locking needed */
4468         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4469                 return TRUE;
4470         return FALSE;
4471 }
4472
4473 #define is_complex_isinst(klass) ((klass->flags & TYPE_ATTRIBUTE_INTERFACE) || klass->rank || mono_class_is_nullable (klass) || mono_class_is_marshalbyref (klass) || (klass->flags & TYPE_ATTRIBUTE_SEALED) || klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
4474
4475 static MonoInst*
4476 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4477 {
4478         MonoMethod *mono_castclass;
4479         MonoInst *res;
4480
4481         mono_castclass = mono_marshal_get_castclass_with_cache ();
4482
4483         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4484         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4485         reset_cast_details (cfg);
4486
4487         return res;
4488 }
4489
4490 static int
4491 get_castclass_cache_idx (MonoCompile *cfg)
4492 {
4493         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4494         cfg->castclass_cache_index ++;
4495         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4496 }
4497
4498 static MonoInst*
4499 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4500 {
4501         MonoInst *args [3];
4502         int idx;
4503
4504         /* obj */
4505         args [0] = obj;
4506
4507         /* klass */
4508         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4509
4510         /* inline cache*/
4511         idx = get_castclass_cache_idx (cfg);
4512         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4513
4514         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4515         return emit_castclass_with_cache (cfg, klass, args);
4516 }
4517
4518 /*
4519  * Returns NULL and set the cfg exception on error.
4520  */
4521 static MonoInst*
4522 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, guint8 *ip, int *inline_costs)
4523 {
4524         MonoBasicBlock *is_null_bb;
4525         int obj_reg = src->dreg;
4526         int vtable_reg = alloc_preg (cfg);
4527         int context_used;
4528         MonoInst *klass_inst = NULL, *res;
4529
4530         context_used = mini_class_check_context_used (cfg, klass);
4531
4532         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4533                 res = emit_castclass_with_cache_nonshared (cfg, src, klass);
4534                 (*inline_costs) += 2;
4535                 return res;
4536         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4537                 MonoMethod *mono_castclass;
4538                 MonoInst *iargs [1];
4539                 int costs;
4540
4541                 mono_castclass = mono_marshal_get_castclass (klass);
4542                 iargs [0] = src;
4543
4544                 save_cast_details (cfg, klass, src->dreg, TRUE);
4545                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4546                                                            iargs, ip, cfg->real_offset, TRUE);
4547                 reset_cast_details (cfg);
4548                 CHECK_CFG_EXCEPTION;
4549                 g_assert (costs > 0);
4550
4551                 cfg->real_offset += 5;
4552
4553                 (*inline_costs) += costs;
4554
4555                 return src;
4556         }
4557
4558         if (context_used) {
4559                 MonoInst *args [3];
4560
4561                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4562                         MonoInst *cache_ins;
4563
4564                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4565
4566                         /* obj */
4567                         args [0] = src;
4568
4569                         /* klass - it's the second element of the cache entry*/
4570                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4571
4572                         /* cache */
4573                         args [2] = cache_ins;
4574
4575                         return emit_castclass_with_cache (cfg, klass, args);
4576                 }
4577
4578                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4579         }
4580
4581         NEW_BBLOCK (cfg, is_null_bb);
4582
4583         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4584         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4585
4586         save_cast_details (cfg, klass, obj_reg, FALSE);
4587
4588         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4589                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4590                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4591         } else {
4592                 int klass_reg = alloc_preg (cfg);
4593
4594                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4595
4596                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4597                         /* the remoting code is broken, access the class for now */
4598                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4599                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4600                                 if (!vt) {
4601                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4602                                         cfg->exception_ptr = klass;
4603                                         return NULL;
4604                                 }
4605                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4606                         } else {
4607                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4608                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4609                         }
4610                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4611                 } else {
4612                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4613                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4614                 }
4615         }
4616
4617         MONO_START_BB (cfg, is_null_bb);
4618
4619         reset_cast_details (cfg);
4620
4621         return src;
4622
4623 exception_exit:
4624         return NULL;
4625 }
4626
4627 /*
4628  * Returns NULL and set the cfg exception on error.
4629  */
4630 static MonoInst*
4631 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4632 {
4633         MonoInst *ins;
4634         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4635         int obj_reg = src->dreg;
4636         int vtable_reg = alloc_preg (cfg);
4637         int res_reg = alloc_ireg_ref (cfg);
4638         MonoInst *klass_inst = NULL;
4639
4640         if (context_used) {
4641                 MonoInst *args [3];
4642
4643                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4644                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4645                         MonoInst *cache_ins;
4646
4647                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4648
4649                         /* obj */
4650                         args [0] = src;
4651
4652                         /* klass - it's the second element of the cache entry*/
4653                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4654
4655                         /* cache */
4656                         args [2] = cache_ins;
4657
4658                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4659                 }
4660
4661                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4662         }
4663
4664         NEW_BBLOCK (cfg, is_null_bb);
4665         NEW_BBLOCK (cfg, false_bb);
4666         NEW_BBLOCK (cfg, end_bb);
4667
4668         /* Do the assignment at the beginning, so the other assignment can be if converted */
4669         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4670         ins->type = STACK_OBJ;
4671         ins->klass = klass;
4672
4673         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4674         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4675
4676         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4677
4678         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4679                 g_assert (!context_used);
4680                 /* the is_null_bb target simply copies the input register to the output */
4681                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4682         } else {
4683                 int klass_reg = alloc_preg (cfg);
4684
4685                 if (klass->rank) {
4686                         int rank_reg = alloc_preg (cfg);
4687                         int eclass_reg = alloc_preg (cfg);
4688
4689                         g_assert (!context_used);
4690                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4691                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4692                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4693                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4694                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4695                         if (klass->cast_class == mono_defaults.object_class) {
4696                                 int parent_reg = alloc_preg (cfg);
4697                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4698                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4699                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4700                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4701                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4702                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4703                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4704                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4705                         } else if (klass->cast_class == mono_defaults.enum_class) {
4706                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4707                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4708                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4709                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4710                         } else {
4711                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4712                                         /* Check that the object is a vector too */
4713                                         int bounds_reg = alloc_preg (cfg);
4714                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4715                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4716                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4717                                 }
4718
4719                                 /* the is_null_bb target simply copies the input register to the output */
4720                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4721                         }
4722                 } else if (mono_class_is_nullable (klass)) {
4723                         g_assert (!context_used);
4724                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4725                         /* the is_null_bb target simply copies the input register to the output */
4726                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4727                 } else {
4728                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4729                                 g_assert (!context_used);
4730                                 /* the remoting code is broken, access the class for now */
4731                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4732                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4733                                         if (!vt) {
4734                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4735                                                 cfg->exception_ptr = klass;
4736                                                 return NULL;
4737                                         }
4738                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4739                                 } else {
4740                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4741                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4742                                 }
4743                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4744                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4745                         } else {
4746                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4747                                 /* the is_null_bb target simply copies the input register to the output */
4748                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4749                         }
4750                 }
4751         }
4752
4753         MONO_START_BB (cfg, false_bb);
4754
4755         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4756         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4757
4758         MONO_START_BB (cfg, is_null_bb);
4759
4760         MONO_START_BB (cfg, end_bb);
4761
4762         return ins;
4763 }
4764
4765 static MonoInst*
4766 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4767 {
4768         /* This opcode takes as input an object reference and a class, and returns:
4769         0) if the object is an instance of the class,
4770         1) if the object is not instance of the class,
4771         2) if the object is a proxy whose type cannot be determined */
4772
4773         MonoInst *ins;
4774 #ifndef DISABLE_REMOTING
4775         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4776 #else
4777         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4778 #endif
4779         int obj_reg = src->dreg;
4780         int dreg = alloc_ireg (cfg);
4781         int tmp_reg;
4782 #ifndef DISABLE_REMOTING
4783         int klass_reg = alloc_preg (cfg);
4784 #endif
4785
4786         NEW_BBLOCK (cfg, true_bb);
4787         NEW_BBLOCK (cfg, false_bb);
4788         NEW_BBLOCK (cfg, end_bb);
4789 #ifndef DISABLE_REMOTING
4790         NEW_BBLOCK (cfg, false2_bb);
4791         NEW_BBLOCK (cfg, no_proxy_bb);
4792 #endif
4793
4794         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4795         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4796
4797         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4798 #ifndef DISABLE_REMOTING
4799                 NEW_BBLOCK (cfg, interface_fail_bb);
4800 #endif
4801
4802                 tmp_reg = alloc_preg (cfg);
4803                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4804 #ifndef DISABLE_REMOTING
4805                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4806                 MONO_START_BB (cfg, interface_fail_bb);
4807                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4808
4809                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4810
4811                 tmp_reg = alloc_preg (cfg);
4812                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4813                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4814                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4815 #else
4816                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4817 #endif
4818         } else {
4819 #ifndef DISABLE_REMOTING
4820                 tmp_reg = alloc_preg (cfg);
4821                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4822                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4823
4824                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4825                 tmp_reg = alloc_preg (cfg);
4826                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4827                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4828
4829                 tmp_reg = alloc_preg (cfg);
4830                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4831                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4832                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4833
4834                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4835                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4836
4837                 MONO_START_BB (cfg, no_proxy_bb);
4838
4839                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4840 #else
4841                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4842 #endif
4843         }
4844
4845         MONO_START_BB (cfg, false_bb);
4846
4847         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4848         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4849
4850 #ifndef DISABLE_REMOTING
4851         MONO_START_BB (cfg, false2_bb);
4852
4853         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4854         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4855 #endif
4856
4857         MONO_START_BB (cfg, true_bb);
4858
4859         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4860
4861         MONO_START_BB (cfg, end_bb);
4862
4863         /* FIXME: */
4864         MONO_INST_NEW (cfg, ins, OP_ICONST);
4865         ins->dreg = dreg;
4866         ins->type = STACK_I4;
4867
4868         return ins;
4869 }
4870
4871 static MonoInst*
4872 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4873 {
4874         /* This opcode takes as input an object reference and a class, and returns:
4875         0) if the object is an instance of the class,
4876         1) if the object is a proxy whose type cannot be determined
4877         an InvalidCastException exception is thrown otherwhise*/
4878
4879         MonoInst *ins;
4880 #ifndef DISABLE_REMOTING
4881         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4882 #else
4883         MonoBasicBlock *ok_result_bb;
4884 #endif
4885         int obj_reg = src->dreg;
4886         int dreg = alloc_ireg (cfg);
4887         int tmp_reg = alloc_preg (cfg);
4888
4889 #ifndef DISABLE_REMOTING
4890         int klass_reg = alloc_preg (cfg);
4891         NEW_BBLOCK (cfg, end_bb);
4892 #endif
4893
4894         NEW_BBLOCK (cfg, ok_result_bb);
4895
4896         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4897         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4898
4899         save_cast_details (cfg, klass, obj_reg, FALSE);
4900
4901         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4902 #ifndef DISABLE_REMOTING
4903                 NEW_BBLOCK (cfg, interface_fail_bb);
4904
4905                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4906                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4907                 MONO_START_BB (cfg, interface_fail_bb);
4908                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4909
4910                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4911
4912                 tmp_reg = alloc_preg (cfg);
4913                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4914                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4915                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4916
4917                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4918                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4919 #else
4920                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4921                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4922                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4923 #endif
4924         } else {
4925 #ifndef DISABLE_REMOTING
4926                 NEW_BBLOCK (cfg, no_proxy_bb);
4927
4928                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4929                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4930                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4931
4932                 tmp_reg = alloc_preg (cfg);
4933                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4934                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4935
4936                 tmp_reg = alloc_preg (cfg);
4937                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4938                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4939                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4940
4941                 NEW_BBLOCK (cfg, fail_1_bb);
4942
4943                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4944
4945                 MONO_START_BB (cfg, fail_1_bb);
4946
4947                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4948                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4949
4950                 MONO_START_BB (cfg, no_proxy_bb);
4951
4952                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4953 #else
4954                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4955 #endif
4956         }
4957
4958         MONO_START_BB (cfg, ok_result_bb);
4959
4960         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4961
4962 #ifndef DISABLE_REMOTING
4963         MONO_START_BB (cfg, end_bb);
4964 #endif
4965
4966         /* FIXME: */
4967         MONO_INST_NEW (cfg, ins, OP_ICONST);
4968         ins->dreg = dreg;
4969         ins->type = STACK_I4;
4970
4971         return ins;
4972 }
4973
4974 static G_GNUC_UNUSED MonoInst*
4975 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4976 {
4977         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4978         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4979         gboolean is_i4;
4980
4981         switch (enum_type->type) {
4982         case MONO_TYPE_I8:
4983         case MONO_TYPE_U8:
4984 #if SIZEOF_REGISTER == 8
4985         case MONO_TYPE_I:
4986         case MONO_TYPE_U:
4987 #endif
4988                 is_i4 = FALSE;
4989                 break;
4990         default:
4991                 is_i4 = TRUE;
4992                 break;
4993         }
4994
4995         {
4996                 MonoInst *load, *and_, *cmp, *ceq;
4997                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4998                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4999                 int dest_reg = alloc_ireg (cfg);
5000
5001                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
5002                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
5003                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
5004                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
5005
5006                 ceq->type = STACK_I4;
5007
5008                 if (!is_i4) {
5009                         load = mono_decompose_opcode (cfg, load);
5010                         and_ = mono_decompose_opcode (cfg, and_);
5011                         cmp = mono_decompose_opcode (cfg, cmp);
5012                         ceq = mono_decompose_opcode (cfg, ceq);
5013                 }
5014
5015                 return ceq;
5016         }
5017 }
5018
5019 /*
5020  * Returns NULL and set the cfg exception on error.
5021  */
5022 static G_GNUC_UNUSED MonoInst*
5023 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5024 {
5025         MonoInst *ptr;
5026         int dreg;
5027         gpointer trampoline;
5028         MonoInst *obj, *method_ins, *tramp_ins;
5029         MonoDomain *domain;
5030         guint8 **code_slot;
5031
5032         if (virtual_ && !cfg->llvm_only) {
5033                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5034                 g_assert (invoke);
5035
5036                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5037                         return NULL;
5038         }
5039
5040         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5041         if (!obj)
5042                 return NULL;
5043
5044         /* Inline the contents of mono_delegate_ctor */
5045
5046         /* Set target field */
5047         /* Optimize away setting of NULL target */
5048         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5049                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5050                 if (cfg->gen_write_barriers) {
5051                         dreg = alloc_preg (cfg);
5052                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5053                         emit_write_barrier (cfg, ptr, target);
5054                 }
5055         }
5056
5057         /* Set method field */
5058         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5059         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5060
5061         /*
5062          * To avoid looking up the compiled code belonging to the target method
5063          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5064          * store it, and we fill it after the method has been compiled.
5065          */
5066         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5067                 MonoInst *code_slot_ins;
5068
5069                 if (context_used) {
5070                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5071                 } else {
5072                         domain = mono_domain_get ();
5073                         mono_domain_lock (domain);
5074                         if (!domain_jit_info (domain)->method_code_hash)
5075                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5076                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5077                         if (!code_slot) {
5078                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5079                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5080                         }
5081                         mono_domain_unlock (domain);
5082
5083                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5084                 }
5085                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5086         }
5087
5088         if (cfg->llvm_only) {
5089                 MonoInst *args [16];
5090
5091                 if (virtual_) {
5092                         args [0] = obj;
5093                         args [1] = target;
5094                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5095                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5096                 } else {
5097                         args [0] = obj;
5098                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5099                 }
5100
5101                 return obj;
5102         }
5103
5104         if (cfg->compile_aot) {
5105                 MonoDelegateClassMethodPair *del_tramp;
5106
5107                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5108                 del_tramp->klass = klass;
5109                 del_tramp->method = context_used ? NULL : method;
5110                 del_tramp->is_virtual = virtual_;
5111                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5112         } else {
5113                 if (virtual_)
5114                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5115                 else
5116                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5117                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5118         }
5119
5120         /* Set invoke_impl field */
5121         if (virtual_) {
5122                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5123         } else {
5124                 dreg = alloc_preg (cfg);
5125                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5126                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5127
5128                 dreg = alloc_preg (cfg);
5129                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5130                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5131         }
5132
5133         dreg = alloc_preg (cfg);
5134         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5135         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5136
5137         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5138
5139         return obj;
5140 }
5141
5142 static MonoInst*
5143 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5144 {
5145         MonoJitICallInfo *info;
5146
5147         /* Need to register the icall so it gets an icall wrapper */
5148         info = mono_get_array_new_va_icall (rank);
5149
5150         cfg->flags |= MONO_CFG_HAS_VARARGS;
5151
5152         /* mono_array_new_va () needs a vararg calling convention */
5153         cfg->exception_message = g_strdup ("array-new");
5154         cfg->disable_llvm = TRUE;
5155
5156         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5157         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5158 }
5159
5160 /*
5161  * handle_constrained_gsharedvt_call:
5162  *
5163  *   Handle constrained calls where the receiver is a gsharedvt type.
5164  * Return the instruction representing the call. Set the cfg exception on failure.
5165  */
5166 static MonoInst*
5167 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5168                                                                    gboolean *ref_emit_widen)
5169 {
5170         MonoInst *ins = NULL;
5171         gboolean emit_widen = *ref_emit_widen;
5172
5173         /*
5174          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5175          * This is hard to do with the current call code, since we would have to emit a branch and two different calls. So instead, we
5176          * pack the arguments into an array, and do the rest of the work in in an icall.
5177          */
5178         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5179                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mini_is_gsharedvt_type (fsig->ret)) &&
5180                 (fsig->param_count == 0 || (!fsig->hasthis && fsig->param_count == 1) || (fsig->param_count == 1 && (MONO_TYPE_IS_REFERENCE (fsig->params [0]) || fsig->params [0]->byref || mini_is_gsharedvt_type (fsig->params [0]))))) {
5181                 MonoInst *args [16];
5182
5183                 /*
5184                  * This case handles calls to
5185                  * - object:ToString()/Equals()/GetHashCode(),
5186                  * - System.IComparable<T>:CompareTo()
5187                  * - System.IEquatable<T>:Equals ()
5188                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5189                  */
5190
5191                 args [0] = sp [0];
5192                 if (mono_method_check_context_used (cmethod))
5193                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5194                 else
5195                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5196                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5197
5198                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5199                 if (fsig->hasthis && fsig->param_count) {
5200                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5201                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5202                         ins->dreg = alloc_preg (cfg);
5203                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5204                         MONO_ADD_INS (cfg->cbb, ins);
5205                         args [4] = ins;
5206
5207                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5208                                 int addr_reg, deref_arg_reg;
5209
5210                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5211                                 deref_arg_reg = alloc_preg (cfg);
5212                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5213                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5214
5215                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5216                                 addr_reg = ins->dreg;
5217                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5218                         } else {
5219                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5220                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5221                         }
5222                 } else {
5223                         EMIT_NEW_ICONST (cfg, args [3], 0);
5224                         EMIT_NEW_ICONST (cfg, args [4], 0);
5225                 }
5226                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5227                 emit_widen = FALSE;
5228
5229                 if (mini_is_gsharedvt_type (fsig->ret)) {
5230                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5231                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5232                         MonoInst *add;
5233
5234                         /* Unbox */
5235                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5236                         MONO_ADD_INS (cfg->cbb, add);
5237                         /* Load value */
5238                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5239                         MONO_ADD_INS (cfg->cbb, ins);
5240                         /* ins represents the call result */
5241                 }
5242         } else {
5243                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5244         }
5245
5246         *ref_emit_widen = emit_widen;
5247
5248         return ins;
5249
5250  exception_exit:
5251         return NULL;
5252 }
5253
5254 static void
5255 mono_emit_load_got_addr (MonoCompile *cfg)
5256 {
5257         MonoInst *getaddr, *dummy_use;
5258
5259         if (!cfg->got_var || cfg->got_var_allocated)
5260                 return;
5261
5262         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5263         getaddr->cil_code = cfg->header->code;
5264         getaddr->dreg = cfg->got_var->dreg;
5265
5266         /* Add it to the start of the first bblock */
5267         if (cfg->bb_entry->code) {
5268                 getaddr->next = cfg->bb_entry->code;
5269                 cfg->bb_entry->code = getaddr;
5270         }
5271         else
5272                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5273
5274         cfg->got_var_allocated = TRUE;
5275
5276         /*
5277          * Add a dummy use to keep the got_var alive, since real uses might
5278          * only be generated by the back ends.
5279          * Add it to end_bblock, so the variable's lifetime covers the whole
5280          * method.
5281          * It would be better to make the usage of the got var explicit in all
5282          * cases when the backend needs it (i.e. calls, throw etc.), so this
5283          * wouldn't be needed.
5284          */
5285         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5286         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5287 }
5288
5289 static int inline_limit;
5290 static gboolean inline_limit_inited;
5291
5292 static gboolean
5293 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5294 {
5295         MonoMethodHeaderSummary header;
5296         MonoVTable *vtable;
5297 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5298         MonoMethodSignature *sig = mono_method_signature (method);
5299         int i;
5300 #endif
5301
5302         if (cfg->disable_inline)
5303                 return FALSE;
5304         if (cfg->gshared)
5305                 return FALSE;
5306
5307         if (cfg->inline_depth > 10)
5308                 return FALSE;
5309
5310         if (!mono_method_get_header_summary (method, &header))
5311                 return FALSE;
5312
5313         /*runtime, icall and pinvoke are checked by summary call*/
5314         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5315             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5316             (mono_class_is_marshalbyref (method->klass)) ||
5317             header.has_clauses)
5318                 return FALSE;
5319
5320         /* also consider num_locals? */
5321         /* Do the size check early to avoid creating vtables */
5322         if (!inline_limit_inited) {
5323                 if (g_getenv ("MONO_INLINELIMIT"))
5324                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5325                 else
5326                         inline_limit = INLINE_LENGTH_LIMIT;
5327                 inline_limit_inited = TRUE;
5328         }
5329         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5330                 return FALSE;
5331
5332         /*
5333          * if we can initialize the class of the method right away, we do,
5334          * otherwise we don't allow inlining if the class needs initialization,
5335          * since it would mean inserting a call to mono_runtime_class_init()
5336          * inside the inlined code
5337          */
5338         if (!(cfg->opt & MONO_OPT_SHARED)) {
5339                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5340                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5341                         vtable = mono_class_vtable (cfg->domain, method->klass);
5342                         if (!vtable)
5343                                 return FALSE;
5344                         if (!cfg->compile_aot) {
5345                                 MonoError error;
5346                                 if (!mono_runtime_class_init_full (vtable, &error))
5347                                         mono_error_raise_exception (&error); /* FIXME don't raise here */
5348                         }
5349                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5350                         if (cfg->run_cctors && method->klass->has_cctor) {
5351                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5352                                 if (!method->klass->runtime_info)
5353                                         /* No vtable created yet */
5354                                         return FALSE;
5355                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5356                                 if (!vtable)
5357                                         return FALSE;
5358                                 /* This makes so that inline cannot trigger */
5359                                 /* .cctors: too many apps depend on them */
5360                                 /* running with a specific order... */
5361                                 if (! vtable->initialized)
5362                                         return FALSE;
5363                                 MonoError error;
5364                                 if (!mono_runtime_class_init_full (vtable, &error))
5365                                         mono_error_raise_exception (&error); /* FIXME don't raise here */
5366                         }
5367                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5368                         if (!method->klass->runtime_info)
5369                                 /* No vtable created yet */
5370                                 return FALSE;
5371                         vtable = mono_class_vtable (cfg->domain, method->klass);
5372                         if (!vtable)
5373                                 return FALSE;
5374                         if (!vtable->initialized)
5375                                 return FALSE;
5376                 }
5377         } else {
5378                 /*
5379                  * If we're compiling for shared code
5380                  * the cctor will need to be run at aot method load time, for example,
5381                  * or at the end of the compilation of the inlining method.
5382                  */
5383                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5384                         return FALSE;
5385         }
5386
5387 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5388         if (mono_arch_is_soft_float ()) {
5389                 /* FIXME: */
5390                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5391                         return FALSE;
5392                 for (i = 0; i < sig->param_count; ++i)
5393                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5394                                 return FALSE;
5395         }
5396 #endif
5397
5398         if (g_list_find (cfg->dont_inline, method))
5399                 return FALSE;
5400
5401         return TRUE;
5402 }
5403
5404 static gboolean
5405 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5406 {
5407         if (!cfg->compile_aot) {
5408                 g_assert (vtable);
5409                 if (vtable->initialized)
5410                         return FALSE;
5411         }
5412
5413         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5414                 if (cfg->method == method)
5415                         return FALSE;
5416         }
5417
5418         if (!mono_class_needs_cctor_run (klass, method))
5419                 return FALSE;
5420
5421         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5422                 /* The initialization is already done before the method is called */
5423                 return FALSE;
5424
5425         return TRUE;
5426 }
5427
5428 static MonoInst*
5429 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5430 {
5431         MonoInst *ins;
5432         guint32 size;
5433         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5434         int context_used;
5435
5436         if (mini_is_gsharedvt_variable_klass (klass)) {
5437                 size = -1;
5438         } else {
5439                 mono_class_init (klass);
5440                 size = mono_class_array_element_size (klass);
5441         }
5442
5443         mult_reg = alloc_preg (cfg);
5444         array_reg = arr->dreg;
5445         index_reg = index->dreg;
5446
5447 #if SIZEOF_REGISTER == 8
5448         /* The array reg is 64 bits but the index reg is only 32 */
5449         if (COMPILE_LLVM (cfg)) {
5450                 /* Not needed */
5451                 index2_reg = index_reg;
5452         } else {
5453                 index2_reg = alloc_preg (cfg);
5454                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5455         }
5456 #else
5457         if (index->type == STACK_I8) {
5458                 index2_reg = alloc_preg (cfg);
5459                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5460         } else {
5461                 index2_reg = index_reg;
5462         }
5463 #endif
5464
5465         if (bcheck)
5466                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5467
5468 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5469         if (size == 1 || size == 2 || size == 4 || size == 8) {
5470                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5471
5472                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5473                 ins->klass = mono_class_get_element_class (klass);
5474                 ins->type = STACK_MP;
5475
5476                 return ins;
5477         }
5478 #endif
5479
5480         add_reg = alloc_ireg_mp (cfg);
5481
5482         if (size == -1) {
5483                 MonoInst *rgctx_ins;
5484
5485                 /* gsharedvt */
5486                 g_assert (cfg->gshared);
5487                 context_used = mini_class_check_context_used (cfg, klass);
5488                 g_assert (context_used);
5489                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5490                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5491         } else {
5492                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5493         }
5494         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5495         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5496         ins->klass = mono_class_get_element_class (klass);
5497         ins->type = STACK_MP;
5498         MONO_ADD_INS (cfg->cbb, ins);
5499
5500         return ins;
5501 }
5502
5503 static MonoInst*
5504 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5505 {
5506         int bounds_reg = alloc_preg (cfg);
5507         int add_reg = alloc_ireg_mp (cfg);
5508         int mult_reg = alloc_preg (cfg);
5509         int mult2_reg = alloc_preg (cfg);
5510         int low1_reg = alloc_preg (cfg);
5511         int low2_reg = alloc_preg (cfg);
5512         int high1_reg = alloc_preg (cfg);
5513         int high2_reg = alloc_preg (cfg);
5514         int realidx1_reg = alloc_preg (cfg);
5515         int realidx2_reg = alloc_preg (cfg);
5516         int sum_reg = alloc_preg (cfg);
5517         int index1, index2, tmpreg;
5518         MonoInst *ins;
5519         guint32 size;
5520
5521         mono_class_init (klass);
5522         size = mono_class_array_element_size (klass);
5523
5524         index1 = index_ins1->dreg;
5525         index2 = index_ins2->dreg;
5526
5527 #if SIZEOF_REGISTER == 8
5528         /* The array reg is 64 bits but the index reg is only 32 */
5529         if (COMPILE_LLVM (cfg)) {
5530                 /* Not needed */
5531         } else {
5532                 tmpreg = alloc_preg (cfg);
5533                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5534                 index1 = tmpreg;
5535                 tmpreg = alloc_preg (cfg);
5536                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5537                 index2 = tmpreg;
5538         }
5539 #else
5540         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5541         tmpreg = -1;
5542 #endif
5543
5544         /* range checking */
5545         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5546                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5547
5548         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5549                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5550         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5551         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5552                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5553         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5554         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5555
5556         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5557                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5558         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5559         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5560                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5561         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5562         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5563
5564         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5565         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5566         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5567         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5568         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5569
5570         ins->type = STACK_MP;
5571         ins->klass = klass;
5572         MONO_ADD_INS (cfg->cbb, ins);
5573
5574         return ins;
5575 }
5576
5577 static MonoInst*
5578 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5579 {
5580         int rank;
5581         MonoInst *addr;
5582         MonoMethod *addr_method;
5583         int element_size;
5584         MonoClass *eclass = cmethod->klass->element_class;
5585
5586         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5587
5588         if (rank == 1)
5589                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5590
5591         /* emit_ldelema_2 depends on OP_LMUL */
5592         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5593                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5594         }
5595
5596         if (mini_is_gsharedvt_variable_klass (eclass))
5597                 element_size = 0;
5598         else
5599                 element_size = mono_class_array_element_size (eclass);
5600         addr_method = mono_marshal_get_array_address (rank, element_size);
5601         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5602
5603         return addr;
5604 }
5605
5606 static MonoBreakPolicy
5607 always_insert_breakpoint (MonoMethod *method)
5608 {
5609         return MONO_BREAK_POLICY_ALWAYS;
5610 }
5611
5612 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5613
5614 /**
5615  * mono_set_break_policy:
5616  * policy_callback: the new callback function
5617  *
5618  * Allow embedders to decide wherther to actually obey breakpoint instructions
5619  * (both break IL instructions and Debugger.Break () method calls), for example
5620  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5621  * untrusted or semi-trusted code.
5622  *
5623  * @policy_callback will be called every time a break point instruction needs to
5624  * be inserted with the method argument being the method that calls Debugger.Break()
5625  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5626  * if it wants the breakpoint to not be effective in the given method.
5627  * #MONO_BREAK_POLICY_ALWAYS is the default.
5628  */
5629 void
5630 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5631 {
5632         if (policy_callback)
5633                 break_policy_func = policy_callback;
5634         else
5635                 break_policy_func = always_insert_breakpoint;
5636 }
5637
5638 static gboolean
5639 should_insert_brekpoint (MonoMethod *method) {
5640         switch (break_policy_func (method)) {
5641         case MONO_BREAK_POLICY_ALWAYS:
5642                 return TRUE;
5643         case MONO_BREAK_POLICY_NEVER:
5644                 return FALSE;
5645         case MONO_BREAK_POLICY_ON_DBG:
5646                 g_warning ("mdb no longer supported");
5647                 return FALSE;
5648         default:
5649                 g_warning ("Incorrect value returned from break policy callback");
5650                 return FALSE;
5651         }
5652 }
5653
5654 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5655 static MonoInst*
5656 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5657 {
5658         MonoInst *addr, *store, *load;
5659         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5660
5661         /* the bounds check is already done by the callers */
5662         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5663         if (is_set) {
5664                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5665                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5666                 if (mini_type_is_reference (fsig->params [2]))
5667                         emit_write_barrier (cfg, addr, load);
5668         } else {
5669                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5670                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5671         }
5672         return store;
5673 }
5674
5675
5676 static gboolean
5677 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5678 {
5679         return mini_type_is_reference (&klass->byval_arg);
5680 }
5681
5682 static MonoInst*
5683 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5684 {
5685         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5686                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5687                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5688                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5689                 MonoInst *iargs [3];
5690
5691                 if (!helper->slot)
5692                         mono_class_setup_vtable (obj_array);
5693                 g_assert (helper->slot);
5694
5695                 if (sp [0]->type != STACK_OBJ)
5696                         return NULL;
5697                 if (sp [2]->type != STACK_OBJ)
5698                         return NULL;
5699
5700                 iargs [2] = sp [2];
5701                 iargs [1] = sp [1];
5702                 iargs [0] = sp [0];
5703
5704                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5705         } else {
5706                 MonoInst *ins;
5707
5708                 if (mini_is_gsharedvt_variable_klass (klass)) {
5709                         MonoInst *addr;
5710
5711                         // FIXME-VT: OP_ICONST optimization
5712                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5713                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5714                         ins->opcode = OP_STOREV_MEMBASE;
5715                 } else if (sp [1]->opcode == OP_ICONST) {
5716                         int array_reg = sp [0]->dreg;
5717                         int index_reg = sp [1]->dreg;
5718                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5719
5720                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5721                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5722
5723                         if (safety_checks)
5724                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5725                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5726                 } else {
5727                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5728                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5729                         if (generic_class_is_reference_type (cfg, klass))
5730                                 emit_write_barrier (cfg, addr, sp [2]);
5731                 }
5732                 return ins;
5733         }
5734 }
5735
5736 static MonoInst*
5737 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5738 {
5739         MonoClass *eklass;
5740
5741         if (is_set)
5742                 eklass = mono_class_from_mono_type (fsig->params [2]);
5743         else
5744                 eklass = mono_class_from_mono_type (fsig->ret);
5745
5746         if (is_set) {
5747                 return emit_array_store (cfg, eklass, args, FALSE);
5748         } else {
5749                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5750                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5751                 return ins;
5752         }
5753 }
5754
5755 static gboolean
5756 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5757 {
5758         uint32_t align;
5759         int param_size, return_size;
5760
5761         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5762         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5763
5764         if (cfg->verbose_level > 3)
5765                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5766
5767         //Don't allow mixing reference types with value types
5768         if (param_klass->valuetype != return_klass->valuetype) {
5769                 if (cfg->verbose_level > 3)
5770                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5771                 return FALSE;
5772         }
5773
5774         if (!param_klass->valuetype) {
5775                 if (cfg->verbose_level > 3)
5776                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5777                 return TRUE;
5778         }
5779
5780         //That are blitable
5781         if (param_klass->has_references || return_klass->has_references)
5782                 return FALSE;
5783
5784         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5785         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5786                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5787                         if (cfg->verbose_level > 3)
5788                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5789                 return FALSE;
5790         }
5791
5792         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5793                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5794                 if (cfg->verbose_level > 3)
5795                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5796                 return FALSE;
5797         }
5798
5799         param_size = mono_class_value_size (param_klass, &align);
5800         return_size = mono_class_value_size (return_klass, &align);
5801
5802         //We can do it if sizes match
5803         if (param_size == return_size) {
5804                 if (cfg->verbose_level > 3)
5805                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5806                 return TRUE;
5807         }
5808
5809         //No simple way to handle struct if sizes don't match
5810         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5811                 if (cfg->verbose_level > 3)
5812                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5813                 return FALSE;
5814         }
5815
5816         /*
5817          * Same reg size category.
5818          * A quick note on why we don't require widening here.
5819          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5820          *
5821          * Since the source value comes from a function argument, the JIT will already have
5822          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5823          */
5824         if (param_size <= 4 && return_size <= 4) {
5825                 if (cfg->verbose_level > 3)
5826                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5827                 return TRUE;
5828         }
5829
5830         return FALSE;
5831 }
5832
5833 static MonoInst*
5834 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5835 {
5836         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5837         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5838
5839         if (mini_is_gsharedvt_variable_type (fsig->ret))
5840                 return NULL;
5841
5842         //Valuetypes that are semantically equivalent or numbers than can be widened to
5843         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5844                 return args [0];
5845
5846         //Arrays of valuetypes that are semantically equivalent
5847         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5848                 return args [0];
5849
5850         return NULL;
5851 }
5852
5853 static MonoInst*
5854 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5855 {
5856 #ifdef MONO_ARCH_SIMD_INTRINSICS
5857         MonoInst *ins = NULL;
5858
5859         if (cfg->opt & MONO_OPT_SIMD) {
5860                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5861                 if (ins)
5862                         return ins;
5863         }
5864 #endif
5865
5866         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5867 }
5868
5869 static MonoInst*
5870 emit_memory_barrier (MonoCompile *cfg, int kind)
5871 {
5872         MonoInst *ins = NULL;
5873         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5874         MONO_ADD_INS (cfg->cbb, ins);
5875         ins->backend.memory_barrier_kind = kind;
5876
5877         return ins;
5878 }
5879
5880 static MonoInst*
5881 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5882 {
5883         MonoInst *ins = NULL;
5884         int opcode = 0;
5885
5886         /* The LLVM backend supports these intrinsics */
5887         if (cmethod->klass == mono_defaults.math_class) {
5888                 if (strcmp (cmethod->name, "Sin") == 0) {
5889                         opcode = OP_SIN;
5890                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5891                         opcode = OP_COS;
5892                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5893                         opcode = OP_SQRT;
5894                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5895                         opcode = OP_ABS;
5896                 }
5897
5898                 if (opcode && fsig->param_count == 1) {
5899                         MONO_INST_NEW (cfg, ins, opcode);
5900                         ins->type = STACK_R8;
5901                         ins->dreg = mono_alloc_freg (cfg);
5902                         ins->sreg1 = args [0]->dreg;
5903                         MONO_ADD_INS (cfg->cbb, ins);
5904                 }
5905
5906                 opcode = 0;
5907                 if (cfg->opt & MONO_OPT_CMOV) {
5908                         if (strcmp (cmethod->name, "Min") == 0) {
5909                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5910                                         opcode = OP_IMIN;
5911                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5912                                         opcode = OP_IMIN_UN;
5913                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5914                                         opcode = OP_LMIN;
5915                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5916                                         opcode = OP_LMIN_UN;
5917                         } else if (strcmp (cmethod->name, "Max") == 0) {
5918                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5919                                         opcode = OP_IMAX;
5920                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5921                                         opcode = OP_IMAX_UN;
5922                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5923                                         opcode = OP_LMAX;
5924                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5925                                         opcode = OP_LMAX_UN;
5926                         }
5927                 }
5928
5929                 if (opcode && fsig->param_count == 2) {
5930                         MONO_INST_NEW (cfg, ins, opcode);
5931                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5932                         ins->dreg = mono_alloc_ireg (cfg);
5933                         ins->sreg1 = args [0]->dreg;
5934                         ins->sreg2 = args [1]->dreg;
5935                         MONO_ADD_INS (cfg->cbb, ins);
5936                 }
5937         }
5938
5939         return ins;
5940 }
5941
5942 static MonoInst*
5943 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5944 {
5945         if (cmethod->klass == mono_defaults.array_class) {
5946                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5947                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5948                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5949                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5950                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5951                         return emit_array_unsafe_mov (cfg, fsig, args);
5952         }
5953
5954         return NULL;
5955 }
5956
5957 static MonoInst*
5958 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5959 {
5960         MonoInst *ins = NULL;
5961
5962          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5963
5964         if (cmethod->klass == mono_defaults.string_class) {
5965                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5966                         int dreg = alloc_ireg (cfg);
5967                         int index_reg = alloc_preg (cfg);
5968                         int add_reg = alloc_preg (cfg);
5969
5970 #if SIZEOF_REGISTER == 8
5971                         if (COMPILE_LLVM (cfg)) {
5972                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5973                         } else {
5974                                 /* The array reg is 64 bits but the index reg is only 32 */
5975                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5976                         }
5977 #else
5978                         index_reg = args [1]->dreg;
5979 #endif
5980                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5981
5982 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5983                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5984                         add_reg = ins->dreg;
5985                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5986                                                                    add_reg, 0);
5987 #else
5988                         int mult_reg = alloc_preg (cfg);
5989                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5990                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5991                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5992                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5993 #endif
5994                         type_from_op (cfg, ins, NULL, NULL);
5995                         return ins;
5996                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5997                         int dreg = alloc_ireg (cfg);
5998                         /* Decompose later to allow more optimizations */
5999                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
6000                         ins->type = STACK_I4;
6001                         ins->flags |= MONO_INST_FAULT;
6002                         cfg->cbb->has_array_access = TRUE;
6003                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6004
6005                         return ins;
6006                 } else
6007                         return NULL;
6008         } else if (cmethod->klass == mono_defaults.object_class) {
6009                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6010                         int dreg = alloc_ireg_ref (cfg);
6011                         int vt_reg = alloc_preg (cfg);
6012                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6013                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6014                         type_from_op (cfg, ins, NULL, NULL);
6015
6016                         return ins;
6017                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6018                         int dreg = alloc_ireg (cfg);
6019                         int t1 = alloc_ireg (cfg);
6020
6021                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6022                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6023                         ins->type = STACK_I4;
6024
6025                         return ins;
6026                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6027                         MONO_INST_NEW (cfg, ins, OP_NOP);
6028                         MONO_ADD_INS (cfg->cbb, ins);
6029                         return ins;
6030                 } else
6031                         return NULL;
6032         } else if (cmethod->klass == mono_defaults.array_class) {
6033                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6034                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6035                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6036                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6037
6038 #ifndef MONO_BIG_ARRAYS
6039                 /*
6040                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6041                  * Array methods.
6042                  */
6043                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6044                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6045                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6046                         int dreg = alloc_ireg (cfg);
6047                         int bounds_reg = alloc_ireg_mp (cfg);
6048                         MonoBasicBlock *end_bb, *szarray_bb;
6049                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6050
6051                         NEW_BBLOCK (cfg, end_bb);
6052                         NEW_BBLOCK (cfg, szarray_bb);
6053
6054                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6055                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6056                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6057                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6058                         /* Non-szarray case */
6059                         if (get_length)
6060                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6061                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6062                         else
6063                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6064                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6065                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6066                         MONO_START_BB (cfg, szarray_bb);
6067                         /* Szarray case */
6068                         if (get_length)
6069                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6070                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6071                         else
6072                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6073                         MONO_START_BB (cfg, end_bb);
6074
6075                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6076                         ins->type = STACK_I4;
6077
6078                         return ins;
6079                 }
6080 #endif
6081
6082                 if (cmethod->name [0] != 'g')
6083                         return NULL;
6084
6085                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6086                         int dreg = alloc_ireg (cfg);
6087                         int vtable_reg = alloc_preg (cfg);
6088                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6089                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6090                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6091                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6092                         type_from_op (cfg, ins, NULL, NULL);
6093
6094                         return ins;
6095                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6096                         int dreg = alloc_ireg (cfg);
6097
6098                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6099                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6100                         type_from_op (cfg, ins, NULL, NULL);
6101
6102                         return ins;
6103                 } else
6104                         return NULL;
6105         } else if (cmethod->klass == runtime_helpers_class) {
6106                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6107                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6108                         return ins;
6109                 } else
6110                         return NULL;
6111         } else if (cmethod->klass == mono_defaults.monitor_class) {
6112                 gboolean is_enter = FALSE;
6113                 gboolean is_v4 = FALSE;
6114
6115                 if (!strcmp (cmethod->name, "enter_with_atomic_var") && mono_method_signature (cmethod)->param_count == 2) {
6116                         is_enter = TRUE;
6117                         is_v4 = TRUE;
6118                 }
6119                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6120                         is_enter = TRUE;
6121
6122                 if (is_enter) {
6123                         /*
6124                          * To make async stack traces work, icalls which can block should have a wrapper.
6125                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6126                          */
6127                         MonoBasicBlock *end_bb;
6128
6129                         NEW_BBLOCK (cfg, end_bb);
6130
6131                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
6132                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6133                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6134                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4 : (gpointer)mono_monitor_enter, args);
6135                         MONO_START_BB (cfg, end_bb);
6136                         return ins;
6137                 }
6138         } else if (cmethod->klass == mono_defaults.thread_class) {
6139                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6140                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6141                         MONO_ADD_INS (cfg->cbb, ins);
6142                         return ins;
6143                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6144                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6145                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6146                         guint32 opcode = 0;
6147                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6148
6149                         if (fsig->params [0]->type == MONO_TYPE_I1)
6150                                 opcode = OP_LOADI1_MEMBASE;
6151                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6152                                 opcode = OP_LOADU1_MEMBASE;
6153                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6154                                 opcode = OP_LOADI2_MEMBASE;
6155                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6156                                 opcode = OP_LOADU2_MEMBASE;
6157                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6158                                 opcode = OP_LOADI4_MEMBASE;
6159                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6160                                 opcode = OP_LOADU4_MEMBASE;
6161                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6162                                 opcode = OP_LOADI8_MEMBASE;
6163                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6164                                 opcode = OP_LOADR4_MEMBASE;
6165                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6166                                 opcode = OP_LOADR8_MEMBASE;
6167                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6168                                 opcode = OP_LOAD_MEMBASE;
6169
6170                         if (opcode) {
6171                                 MONO_INST_NEW (cfg, ins, opcode);
6172                                 ins->inst_basereg = args [0]->dreg;
6173                                 ins->inst_offset = 0;
6174                                 MONO_ADD_INS (cfg->cbb, ins);
6175
6176                                 switch (fsig->params [0]->type) {
6177                                 case MONO_TYPE_I1:
6178                                 case MONO_TYPE_U1:
6179                                 case MONO_TYPE_I2:
6180                                 case MONO_TYPE_U2:
6181                                 case MONO_TYPE_I4:
6182                                 case MONO_TYPE_U4:
6183                                         ins->dreg = mono_alloc_ireg (cfg);
6184                                         ins->type = STACK_I4;
6185                                         break;
6186                                 case MONO_TYPE_I8:
6187                                 case MONO_TYPE_U8:
6188                                         ins->dreg = mono_alloc_lreg (cfg);
6189                                         ins->type = STACK_I8;
6190                                         break;
6191                                 case MONO_TYPE_I:
6192                                 case MONO_TYPE_U:
6193                                         ins->dreg = mono_alloc_ireg (cfg);
6194 #if SIZEOF_REGISTER == 8
6195                                         ins->type = STACK_I8;
6196 #else
6197                                         ins->type = STACK_I4;
6198 #endif
6199                                         break;
6200                                 case MONO_TYPE_R4:
6201                                 case MONO_TYPE_R8:
6202                                         ins->dreg = mono_alloc_freg (cfg);
6203                                         ins->type = STACK_R8;
6204                                         break;
6205                                 default:
6206                                         g_assert (mini_type_is_reference (fsig->params [0]));
6207                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6208                                         ins->type = STACK_OBJ;
6209                                         break;
6210                                 }
6211
6212                                 if (opcode == OP_LOADI8_MEMBASE)
6213                                         ins = mono_decompose_opcode (cfg, ins);
6214
6215                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6216
6217                                 return ins;
6218                         }
6219                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6220                         guint32 opcode = 0;
6221                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6222
6223                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6224                                 opcode = OP_STOREI1_MEMBASE_REG;
6225                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6226                                 opcode = OP_STOREI2_MEMBASE_REG;
6227                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6228                                 opcode = OP_STOREI4_MEMBASE_REG;
6229                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6230                                 opcode = OP_STOREI8_MEMBASE_REG;
6231                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6232                                 opcode = OP_STORER4_MEMBASE_REG;
6233                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6234                                 opcode = OP_STORER8_MEMBASE_REG;
6235                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6236                                 opcode = OP_STORE_MEMBASE_REG;
6237
6238                         if (opcode) {
6239                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6240
6241                                 MONO_INST_NEW (cfg, ins, opcode);
6242                                 ins->sreg1 = args [1]->dreg;
6243                                 ins->inst_destbasereg = args [0]->dreg;
6244                                 ins->inst_offset = 0;
6245                                 MONO_ADD_INS (cfg->cbb, ins);
6246
6247                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6248                                         ins = mono_decompose_opcode (cfg, ins);
6249
6250                                 return ins;
6251                         }
6252                 }
6253         } else if (cmethod->klass->image == mono_defaults.corlib &&
6254                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6255                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6256                 ins = NULL;
6257
6258 #if SIZEOF_REGISTER == 8
6259                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6260                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6261                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6262                                 ins->dreg = mono_alloc_preg (cfg);
6263                                 ins->sreg1 = args [0]->dreg;
6264                                 ins->type = STACK_I8;
6265                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6266                                 MONO_ADD_INS (cfg->cbb, ins);
6267                         } else {
6268                                 MonoInst *load_ins;
6269
6270                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6271
6272                                 /* 64 bit reads are already atomic */
6273                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6274                                 load_ins->dreg = mono_alloc_preg (cfg);
6275                                 load_ins->inst_basereg = args [0]->dreg;
6276                                 load_ins->inst_offset = 0;
6277                                 load_ins->type = STACK_I8;
6278                                 MONO_ADD_INS (cfg->cbb, load_ins);
6279
6280                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6281
6282                                 ins = load_ins;
6283                         }
6284                 }
6285 #endif
6286
6287                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6288                         MonoInst *ins_iconst;
6289                         guint32 opcode = 0;
6290
6291                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6292                                 opcode = OP_ATOMIC_ADD_I4;
6293                                 cfg->has_atomic_add_i4 = TRUE;
6294                         }
6295 #if SIZEOF_REGISTER == 8
6296                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6297                                 opcode = OP_ATOMIC_ADD_I8;
6298 #endif
6299                         if (opcode) {
6300                                 if (!mono_arch_opcode_supported (opcode))
6301                                         return NULL;
6302                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6303                                 ins_iconst->inst_c0 = 1;
6304                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6305                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6306
6307                                 MONO_INST_NEW (cfg, ins, opcode);
6308                                 ins->dreg = mono_alloc_ireg (cfg);
6309                                 ins->inst_basereg = args [0]->dreg;
6310                                 ins->inst_offset = 0;
6311                                 ins->sreg2 = ins_iconst->dreg;
6312                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6313                                 MONO_ADD_INS (cfg->cbb, ins);
6314                         }
6315                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6316                         MonoInst *ins_iconst;
6317                         guint32 opcode = 0;
6318
6319                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6320                                 opcode = OP_ATOMIC_ADD_I4;
6321                                 cfg->has_atomic_add_i4 = TRUE;
6322                         }
6323 #if SIZEOF_REGISTER == 8
6324                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6325                                 opcode = OP_ATOMIC_ADD_I8;
6326 #endif
6327                         if (opcode) {
6328                                 if (!mono_arch_opcode_supported (opcode))
6329                                         return NULL;
6330                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6331                                 ins_iconst->inst_c0 = -1;
6332                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6333                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6334
6335                                 MONO_INST_NEW (cfg, ins, opcode);
6336                                 ins->dreg = mono_alloc_ireg (cfg);
6337                                 ins->inst_basereg = args [0]->dreg;
6338                                 ins->inst_offset = 0;
6339                                 ins->sreg2 = ins_iconst->dreg;
6340                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6341                                 MONO_ADD_INS (cfg->cbb, ins);
6342                         }
6343                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6344                         guint32 opcode = 0;
6345
6346                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6347                                 opcode = OP_ATOMIC_ADD_I4;
6348                                 cfg->has_atomic_add_i4 = TRUE;
6349                         }
6350 #if SIZEOF_REGISTER == 8
6351                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6352                                 opcode = OP_ATOMIC_ADD_I8;
6353 #endif
6354                         if (opcode) {
6355                                 if (!mono_arch_opcode_supported (opcode))
6356                                         return NULL;
6357                                 MONO_INST_NEW (cfg, ins, opcode);
6358                                 ins->dreg = mono_alloc_ireg (cfg);
6359                                 ins->inst_basereg = args [0]->dreg;
6360                                 ins->inst_offset = 0;
6361                                 ins->sreg2 = args [1]->dreg;
6362                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6363                                 MONO_ADD_INS (cfg->cbb, ins);
6364                         }
6365                 }
6366                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6367                         MonoInst *f2i = NULL, *i2f;
6368                         guint32 opcode, f2i_opcode, i2f_opcode;
6369                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6370                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6371
6372                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6373                             fsig->params [0]->type == MONO_TYPE_R4) {
6374                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6375                                 f2i_opcode = OP_MOVE_F_TO_I4;
6376                                 i2f_opcode = OP_MOVE_I4_TO_F;
6377                                 cfg->has_atomic_exchange_i4 = TRUE;
6378                         }
6379 #if SIZEOF_REGISTER == 8
6380                         else if (is_ref ||
6381                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6382                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6383                                  fsig->params [0]->type == MONO_TYPE_I) {
6384                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6385                                 f2i_opcode = OP_MOVE_F_TO_I8;
6386                                 i2f_opcode = OP_MOVE_I8_TO_F;
6387                         }
6388 #else
6389                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6390                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6391                                 cfg->has_atomic_exchange_i4 = TRUE;
6392                         }
6393 #endif
6394                         else
6395                                 return NULL;
6396
6397                         if (!mono_arch_opcode_supported (opcode))
6398                                 return NULL;
6399
6400                         if (is_float) {
6401                                 /* TODO: Decompose these opcodes instead of bailing here. */
6402                                 if (COMPILE_SOFT_FLOAT (cfg))
6403                                         return NULL;
6404
6405                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6406                                 f2i->dreg = mono_alloc_ireg (cfg);
6407                                 f2i->sreg1 = args [1]->dreg;
6408                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6409                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6410                                 MONO_ADD_INS (cfg->cbb, f2i);
6411                         }
6412
6413                         MONO_INST_NEW (cfg, ins, opcode);
6414                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6415                         ins->inst_basereg = args [0]->dreg;
6416                         ins->inst_offset = 0;
6417                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6418                         MONO_ADD_INS (cfg->cbb, ins);
6419
6420                         switch (fsig->params [0]->type) {
6421                         case MONO_TYPE_I4:
6422                                 ins->type = STACK_I4;
6423                                 break;
6424                         case MONO_TYPE_I8:
6425                                 ins->type = STACK_I8;
6426                                 break;
6427                         case MONO_TYPE_I:
6428 #if SIZEOF_REGISTER == 8
6429                                 ins->type = STACK_I8;
6430 #else
6431                                 ins->type = STACK_I4;
6432 #endif
6433                                 break;
6434                         case MONO_TYPE_R4:
6435                         case MONO_TYPE_R8:
6436                                 ins->type = STACK_R8;
6437                                 break;
6438                         default:
6439                                 g_assert (mini_type_is_reference (fsig->params [0]));
6440                                 ins->type = STACK_OBJ;
6441                                 break;
6442                         }
6443
6444                         if (is_float) {
6445                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6446                                 i2f->dreg = mono_alloc_freg (cfg);
6447                                 i2f->sreg1 = ins->dreg;
6448                                 i2f->type = STACK_R8;
6449                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6450                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6451                                 MONO_ADD_INS (cfg->cbb, i2f);
6452
6453                                 ins = i2f;
6454                         }
6455
6456                         if (cfg->gen_write_barriers && is_ref)
6457                                 emit_write_barrier (cfg, args [0], args [1]);
6458                 }
6459                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6460                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6461                         guint32 opcode, f2i_opcode, i2f_opcode;
6462                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6463                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6464
6465                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6466                             fsig->params [1]->type == MONO_TYPE_R4) {
6467                                 opcode = OP_ATOMIC_CAS_I4;
6468                                 f2i_opcode = OP_MOVE_F_TO_I4;
6469                                 i2f_opcode = OP_MOVE_I4_TO_F;
6470                                 cfg->has_atomic_cas_i4 = TRUE;
6471                         }
6472 #if SIZEOF_REGISTER == 8
6473                         else if (is_ref ||
6474                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6475                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6476                                  fsig->params [1]->type == MONO_TYPE_I) {
6477                                 opcode = OP_ATOMIC_CAS_I8;
6478                                 f2i_opcode = OP_MOVE_F_TO_I8;
6479                                 i2f_opcode = OP_MOVE_I8_TO_F;
6480                         }
6481 #else
6482                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6483                                 opcode = OP_ATOMIC_CAS_I4;
6484                                 cfg->has_atomic_cas_i4 = TRUE;
6485                         }
6486 #endif
6487                         else
6488                                 return NULL;
6489
6490                         if (!mono_arch_opcode_supported (opcode))
6491                                 return NULL;
6492
6493                         if (is_float) {
6494                                 /* TODO: Decompose these opcodes instead of bailing here. */
6495                                 if (COMPILE_SOFT_FLOAT (cfg))
6496                                         return NULL;
6497
6498                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6499                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6500                                 f2i_new->sreg1 = args [1]->dreg;
6501                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6502                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6503                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6504
6505                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6506                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6507                                 f2i_cmp->sreg1 = args [2]->dreg;
6508                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6509                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6510                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6511                         }
6512
6513                         MONO_INST_NEW (cfg, ins, opcode);
6514                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6515                         ins->sreg1 = args [0]->dreg;
6516                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6517                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6518                         MONO_ADD_INS (cfg->cbb, ins);
6519
6520                         switch (fsig->params [1]->type) {
6521                         case MONO_TYPE_I4:
6522                                 ins->type = STACK_I4;
6523                                 break;
6524                         case MONO_TYPE_I8:
6525                                 ins->type = STACK_I8;
6526                                 break;
6527                         case MONO_TYPE_I:
6528 #if SIZEOF_REGISTER == 8
6529                                 ins->type = STACK_I8;
6530 #else
6531                                 ins->type = STACK_I4;
6532 #endif
6533                                 break;
6534                         case MONO_TYPE_R4:
6535                                 ins->type = cfg->r4_stack_type;
6536                                 break;
6537                         case MONO_TYPE_R8:
6538                                 ins->type = STACK_R8;
6539                                 break;
6540                         default:
6541                                 g_assert (mini_type_is_reference (fsig->params [1]));
6542                                 ins->type = STACK_OBJ;
6543                                 break;
6544                         }
6545
6546                         if (is_float) {
6547                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6548                                 i2f->dreg = mono_alloc_freg (cfg);
6549                                 i2f->sreg1 = ins->dreg;
6550                                 i2f->type = STACK_R8;
6551                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6552                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6553                                 MONO_ADD_INS (cfg->cbb, i2f);
6554
6555                                 ins = i2f;
6556                         }
6557
6558                         if (cfg->gen_write_barriers && is_ref)
6559                                 emit_write_barrier (cfg, args [0], args [1]);
6560                 }
6561                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6562                          fsig->params [1]->type == MONO_TYPE_I4) {
6563                         MonoInst *cmp, *ceq;
6564
6565                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6566                                 return NULL;
6567
6568                         /* int32 r = CAS (location, value, comparand); */
6569                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6570                         ins->dreg = alloc_ireg (cfg);
6571                         ins->sreg1 = args [0]->dreg;
6572                         ins->sreg2 = args [1]->dreg;
6573                         ins->sreg3 = args [2]->dreg;
6574                         ins->type = STACK_I4;
6575                         MONO_ADD_INS (cfg->cbb, ins);
6576
6577                         /* bool result = r == comparand; */
6578                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6579                         cmp->sreg1 = ins->dreg;
6580                         cmp->sreg2 = args [2]->dreg;
6581                         cmp->type = STACK_I4;
6582                         MONO_ADD_INS (cfg->cbb, cmp);
6583
6584                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6585                         ceq->dreg = alloc_ireg (cfg);
6586                         ceq->type = STACK_I4;
6587                         MONO_ADD_INS (cfg->cbb, ceq);
6588
6589                         /* *success = result; */
6590                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6591
6592                         cfg->has_atomic_cas_i4 = TRUE;
6593                 }
6594                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6595                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6596
6597                 if (ins)
6598                         return ins;
6599         } else if (cmethod->klass->image == mono_defaults.corlib &&
6600                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6601                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6602                 ins = NULL;
6603
6604                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6605                         guint32 opcode = 0;
6606                         MonoType *t = fsig->params [0];
6607                         gboolean is_ref;
6608                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6609
6610                         g_assert (t->byref);
6611                         /* t is a byref type, so the reference check is more complicated */
6612                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6613                         if (t->type == MONO_TYPE_I1)
6614                                 opcode = OP_ATOMIC_LOAD_I1;
6615                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6616                                 opcode = OP_ATOMIC_LOAD_U1;
6617                         else if (t->type == MONO_TYPE_I2)
6618                                 opcode = OP_ATOMIC_LOAD_I2;
6619                         else if (t->type == MONO_TYPE_U2)
6620                                 opcode = OP_ATOMIC_LOAD_U2;
6621                         else if (t->type == MONO_TYPE_I4)
6622                                 opcode = OP_ATOMIC_LOAD_I4;
6623                         else if (t->type == MONO_TYPE_U4)
6624                                 opcode = OP_ATOMIC_LOAD_U4;
6625                         else if (t->type == MONO_TYPE_R4)
6626                                 opcode = OP_ATOMIC_LOAD_R4;
6627                         else if (t->type == MONO_TYPE_R8)
6628                                 opcode = OP_ATOMIC_LOAD_R8;
6629 #if SIZEOF_REGISTER == 8
6630                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6631                                 opcode = OP_ATOMIC_LOAD_I8;
6632                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6633                                 opcode = OP_ATOMIC_LOAD_U8;
6634 #else
6635                         else if (t->type == MONO_TYPE_I)
6636                                 opcode = OP_ATOMIC_LOAD_I4;
6637                         else if (is_ref || t->type == MONO_TYPE_U)
6638                                 opcode = OP_ATOMIC_LOAD_U4;
6639 #endif
6640
6641                         if (opcode) {
6642                                 if (!mono_arch_opcode_supported (opcode))
6643                                         return NULL;
6644
6645                                 MONO_INST_NEW (cfg, ins, opcode);
6646                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6647                                 ins->sreg1 = args [0]->dreg;
6648                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6649                                 MONO_ADD_INS (cfg->cbb, ins);
6650
6651                                 switch (t->type) {
6652                                 case MONO_TYPE_BOOLEAN:
6653                                 case MONO_TYPE_I1:
6654                                 case MONO_TYPE_U1:
6655                                 case MONO_TYPE_I2:
6656                                 case MONO_TYPE_U2:
6657                                 case MONO_TYPE_I4:
6658                                 case MONO_TYPE_U4:
6659                                         ins->type = STACK_I4;
6660                                         break;
6661                                 case MONO_TYPE_I8:
6662                                 case MONO_TYPE_U8:
6663                                         ins->type = STACK_I8;
6664                                         break;
6665                                 case MONO_TYPE_I:
6666                                 case MONO_TYPE_U:
6667 #if SIZEOF_REGISTER == 8
6668                                         ins->type = STACK_I8;
6669 #else
6670                                         ins->type = STACK_I4;
6671 #endif
6672                                         break;
6673                                 case MONO_TYPE_R4:
6674                                         ins->type = cfg->r4_stack_type;
6675                                         break;
6676                                 case MONO_TYPE_R8:
6677                                         ins->type = STACK_R8;
6678                                         break;
6679                                 default:
6680                                         g_assert (is_ref);
6681                                         ins->type = STACK_OBJ;
6682                                         break;
6683                                 }
6684                         }
6685                 }
6686
6687                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6688                         guint32 opcode = 0;
6689                         MonoType *t = fsig->params [0];
6690                         gboolean is_ref;
6691
6692                         g_assert (t->byref);
6693                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6694                         if (t->type == MONO_TYPE_I1)
6695                                 opcode = OP_ATOMIC_STORE_I1;
6696                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6697                                 opcode = OP_ATOMIC_STORE_U1;
6698                         else if (t->type == MONO_TYPE_I2)
6699                                 opcode = OP_ATOMIC_STORE_I2;
6700                         else if (t->type == MONO_TYPE_U2)
6701                                 opcode = OP_ATOMIC_STORE_U2;
6702                         else if (t->type == MONO_TYPE_I4)
6703                                 opcode = OP_ATOMIC_STORE_I4;
6704                         else if (t->type == MONO_TYPE_U4)
6705                                 opcode = OP_ATOMIC_STORE_U4;
6706                         else if (t->type == MONO_TYPE_R4)
6707                                 opcode = OP_ATOMIC_STORE_R4;
6708                         else if (t->type == MONO_TYPE_R8)
6709                                 opcode = OP_ATOMIC_STORE_R8;
6710 #if SIZEOF_REGISTER == 8
6711                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6712                                 opcode = OP_ATOMIC_STORE_I8;
6713                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6714                                 opcode = OP_ATOMIC_STORE_U8;
6715 #else
6716                         else if (t->type == MONO_TYPE_I)
6717                                 opcode = OP_ATOMIC_STORE_I4;
6718                         else if (is_ref || t->type == MONO_TYPE_U)
6719                                 opcode = OP_ATOMIC_STORE_U4;
6720 #endif
6721
6722                         if (opcode) {
6723                                 if (!mono_arch_opcode_supported (opcode))
6724                                         return NULL;
6725
6726                                 MONO_INST_NEW (cfg, ins, opcode);
6727                                 ins->dreg = args [0]->dreg;
6728                                 ins->sreg1 = args [1]->dreg;
6729                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6730                                 MONO_ADD_INS (cfg->cbb, ins);
6731
6732                                 if (cfg->gen_write_barriers && is_ref)
6733                                         emit_write_barrier (cfg, args [0], args [1]);
6734                         }
6735                 }
6736
6737                 if (ins)
6738                         return ins;
6739         } else if (cmethod->klass->image == mono_defaults.corlib &&
6740                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6741                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6742                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6743                         if (should_insert_brekpoint (cfg->method)) {
6744                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6745                         } else {
6746                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6747                                 MONO_ADD_INS (cfg->cbb, ins);
6748                         }
6749                         return ins;
6750                 }
6751         } else if (cmethod->klass->image == mono_defaults.corlib &&
6752                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6753                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6754                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6755 #ifdef TARGET_WIN32
6756                         EMIT_NEW_ICONST (cfg, ins, 1);
6757 #else
6758                         EMIT_NEW_ICONST (cfg, ins, 0);
6759 #endif
6760                 }
6761         } else if (cmethod->klass->image == mono_defaults.corlib &&
6762                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6763                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6764                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6765                         /* No stack walks are currently available, so implement this as an intrinsic */
6766                         MonoInst *assembly_ins;
6767
6768                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6769                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6770                         return ins;
6771                 }
6772         } else if (cmethod->klass->image == mono_defaults.corlib &&
6773                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6774                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6775                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6776                         /* No stack walks are currently available, so implement this as an intrinsic */
6777                         MonoInst *method_ins;
6778                         MonoMethod *declaring = cfg->method;
6779
6780                         /* This returns the declaring generic method */
6781                         if (declaring->is_inflated)
6782                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6783                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6784                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6785                         cfg->no_inline = TRUE;
6786                         if (cfg->method != cfg->current_method)
6787                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6788                         return ins;
6789                 }
6790         } else if (cmethod->klass == mono_defaults.math_class) {
6791                 /*
6792                  * There is general branchless code for Min/Max, but it does not work for
6793                  * all inputs:
6794                  * http://everything2.com/?node_id=1051618
6795                  */
6796         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6797                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6798                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6799                                 !strcmp (cmethod->klass->name, "Selector")) ||
6800                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6801                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6802                                 !strcmp (cmethod->klass->name, "Selector"))
6803                            ) {
6804                 if (cfg->backend->have_objc_get_selector &&
6805                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6806                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6807                     cfg->compile_aot && !cfg->llvm_only) {
6808                         MonoInst *pi;
6809                         MonoJumpInfoToken *ji;
6810                         MonoString *s;
6811
6812                         // FIXME: llvmonly
6813
6814                         cfg->exception_message = g_strdup ("GetHandle");
6815                         cfg->disable_llvm = TRUE;
6816
6817                         if (args [0]->opcode == OP_GOT_ENTRY) {
6818                                 pi = (MonoInst *)args [0]->inst_p1;
6819                                 g_assert (pi->opcode == OP_PATCH_INFO);
6820                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6821                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6822                         } else {
6823                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6824                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6825                         }
6826
6827                         NULLIFY_INS (args [0]);
6828
6829                         // FIXME: Ugly
6830                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6831                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6832                         ins->dreg = mono_alloc_ireg (cfg);
6833                         // FIXME: Leaks
6834                         ins->inst_p0 = mono_string_to_utf8 (s);
6835                         MONO_ADD_INS (cfg->cbb, ins);
6836                         return ins;
6837                 }
6838         }
6839
6840 #ifdef MONO_ARCH_SIMD_INTRINSICS
6841         if (cfg->opt & MONO_OPT_SIMD) {
6842                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6843                 if (ins)
6844                         return ins;
6845         }
6846 #endif
6847
6848         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6849         if (ins)
6850                 return ins;
6851
6852         if (COMPILE_LLVM (cfg)) {
6853                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6854                 if (ins)
6855                         return ins;
6856         }
6857
6858         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6859 }
6860
6861 /*
6862  * This entry point could be used later for arbitrary method
6863  * redirection.
6864  */
6865 inline static MonoInst*
6866 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6867                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6868 {
6869         if (method->klass == mono_defaults.string_class) {
6870                 /* managed string allocation support */
6871                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6872                         MonoInst *iargs [2];
6873                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6874                         MonoMethod *managed_alloc = NULL;
6875
6876                         g_assert (vtable); /*Should not fail since it System.String*/
6877 #ifndef MONO_CROSS_COMPILE
6878                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6879 #endif
6880                         if (!managed_alloc)
6881                                 return NULL;
6882                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6883                         iargs [1] = args [0];
6884                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6885                 }
6886         }
6887         return NULL;
6888 }
6889
6890 static void
6891 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6892 {
6893         MonoInst *store, *temp;
6894         int i;
6895
6896         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6897                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6898
6899                 /*
6900                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6901                  * would be different than the MonoInst's used to represent arguments, and
6902                  * the ldelema implementation can't deal with that.
6903                  * Solution: When ldelema is used on an inline argument, create a var for
6904                  * it, emit ldelema on that var, and emit the saving code below in
6905                  * inline_method () if needed.
6906                  */
6907                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6908                 cfg->args [i] = temp;
6909                 /* This uses cfg->args [i] which is set by the preceeding line */
6910                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6911                 store->cil_code = sp [0]->cil_code;
6912                 sp++;
6913         }
6914 }
6915
6916 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6917 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6918
6919 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6920 static gboolean
6921 check_inline_called_method_name_limit (MonoMethod *called_method)
6922 {
6923         int strncmp_result;
6924         static const char *limit = NULL;
6925
6926         if (limit == NULL) {
6927                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6928
6929                 if (limit_string != NULL)
6930                         limit = limit_string;
6931                 else
6932                         limit = "";
6933         }
6934
6935         if (limit [0] != '\0') {
6936                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6937
6938                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6939                 g_free (called_method_name);
6940
6941                 //return (strncmp_result <= 0);
6942                 return (strncmp_result == 0);
6943         } else {
6944                 return TRUE;
6945         }
6946 }
6947 #endif
6948
6949 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6950 static gboolean
6951 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6952 {
6953         int strncmp_result;
6954         static const char *limit = NULL;
6955
6956         if (limit == NULL) {
6957                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6958                 if (limit_string != NULL) {
6959                         limit = limit_string;
6960                 } else {
6961                         limit = "";
6962                 }
6963         }
6964
6965         if (limit [0] != '\0') {
6966                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6967
6968                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6969                 g_free (caller_method_name);
6970
6971                 //return (strncmp_result <= 0);
6972                 return (strncmp_result == 0);
6973         } else {
6974                 return TRUE;
6975         }
6976 }
6977 #endif
6978
6979 static void
6980 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6981 {
6982         static double r8_0 = 0.0;
6983         static float r4_0 = 0.0;
6984         MonoInst *ins;
6985         int t;
6986
6987         rtype = mini_get_underlying_type (rtype);
6988         t = rtype->type;
6989
6990         if (rtype->byref) {
6991                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6992         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6993                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6994         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6995                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6996         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6997                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6998                 ins->type = STACK_R4;
6999                 ins->inst_p0 = (void*)&r4_0;
7000                 ins->dreg = dreg;
7001                 MONO_ADD_INS (cfg->cbb, ins);
7002         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7003                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7004                 ins->type = STACK_R8;
7005                 ins->inst_p0 = (void*)&r8_0;
7006                 ins->dreg = dreg;
7007                 MONO_ADD_INS (cfg->cbb, ins);
7008         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7009                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7010                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7011         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7012                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7013         } else {
7014                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7015         }
7016 }
7017
7018 static void
7019 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7020 {
7021         int t;
7022
7023         rtype = mini_get_underlying_type (rtype);
7024         t = rtype->type;
7025
7026         if (rtype->byref) {
7027                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7028         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7029                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7030         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7031                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7032         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7033                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7034         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7035                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7036         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7037                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7038                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7039         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7040                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7041         } else {
7042                 emit_init_rvar (cfg, dreg, rtype);
7043         }
7044 }
7045
7046 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7047 static void
7048 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7049 {
7050         MonoInst *var = cfg->locals [local];
7051         if (COMPILE_SOFT_FLOAT (cfg)) {
7052                 MonoInst *store;
7053                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7054                 emit_init_rvar (cfg, reg, type);
7055                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7056         } else {
7057                 if (init)
7058                         emit_init_rvar (cfg, var->dreg, type);
7059                 else
7060                         emit_dummy_init_rvar (cfg, var->dreg, type);
7061         }
7062 }
7063
7064 /*
7065  * inline_method:
7066  *
7067  *   Return the cost of inlining CMETHOD.
7068  */
7069 static int
7070 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7071                            guchar *ip, guint real_offset, gboolean inline_always)
7072 {
7073         MonoError error;
7074         MonoInst *ins, *rvar = NULL;
7075         MonoMethodHeader *cheader;
7076         MonoBasicBlock *ebblock, *sbblock;
7077         int i, costs;
7078         MonoMethod *prev_inlined_method;
7079         MonoInst **prev_locals, **prev_args;
7080         MonoType **prev_arg_types;
7081         guint prev_real_offset;
7082         GHashTable *prev_cbb_hash;
7083         MonoBasicBlock **prev_cil_offset_to_bb;
7084         MonoBasicBlock *prev_cbb;
7085         unsigned char* prev_cil_start;
7086         guint32 prev_cil_offset_to_bb_len;
7087         MonoMethod *prev_current_method;
7088         MonoGenericContext *prev_generic_context;
7089         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7090
7091         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7092
7093 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7094         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7095                 return 0;
7096 #endif
7097 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7098         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7099                 return 0;
7100 #endif
7101
7102         if (!fsig)
7103                 fsig = mono_method_signature (cmethod);
7104
7105         if (cfg->verbose_level > 2)
7106                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7107
7108         if (!cmethod->inline_info) {
7109                 cfg->stat_inlineable_methods++;
7110                 cmethod->inline_info = 1;
7111         }
7112
7113         /* allocate local variables */
7114         cheader = mono_method_get_header_checked (cmethod, &error);
7115         if (!cheader) {
7116                 if (inline_always) {
7117                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7118                         mono_error_move (&cfg->error, &error);
7119                 } else {
7120                         mono_error_cleanup (&error);
7121                 }
7122                 return 0;
7123         }
7124
7125         /*Must verify before creating locals as it can cause the JIT to assert.*/
7126         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7127                 mono_metadata_free_mh (cheader);
7128                 return 0;
7129         }
7130
7131         /* allocate space to store the return value */
7132         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7133                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7134         }
7135
7136         prev_locals = cfg->locals;
7137         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7138         for (i = 0; i < cheader->num_locals; ++i)
7139                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7140
7141         /* allocate start and end blocks */
7142         /* This is needed so if the inline is aborted, we can clean up */
7143         NEW_BBLOCK (cfg, sbblock);
7144         sbblock->real_offset = real_offset;
7145
7146         NEW_BBLOCK (cfg, ebblock);
7147         ebblock->block_num = cfg->num_bblocks++;
7148         ebblock->real_offset = real_offset;
7149
7150         prev_args = cfg->args;
7151         prev_arg_types = cfg->arg_types;
7152         prev_inlined_method = cfg->inlined_method;
7153         cfg->inlined_method = cmethod;
7154         cfg->ret_var_set = FALSE;
7155         cfg->inline_depth ++;
7156         prev_real_offset = cfg->real_offset;
7157         prev_cbb_hash = cfg->cbb_hash;
7158         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7159         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7160         prev_cil_start = cfg->cil_start;
7161         prev_cbb = cfg->cbb;
7162         prev_current_method = cfg->current_method;
7163         prev_generic_context = cfg->generic_context;
7164         prev_ret_var_set = cfg->ret_var_set;
7165         prev_disable_inline = cfg->disable_inline;
7166
7167         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7168                 virtual_ = TRUE;
7169
7170         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7171
7172         ret_var_set = cfg->ret_var_set;
7173
7174         cfg->inlined_method = prev_inlined_method;
7175         cfg->real_offset = prev_real_offset;
7176         cfg->cbb_hash = prev_cbb_hash;
7177         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7178         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7179         cfg->cil_start = prev_cil_start;
7180         cfg->locals = prev_locals;
7181         cfg->args = prev_args;
7182         cfg->arg_types = prev_arg_types;
7183         cfg->current_method = prev_current_method;
7184         cfg->generic_context = prev_generic_context;
7185         cfg->ret_var_set = prev_ret_var_set;
7186         cfg->disable_inline = prev_disable_inline;
7187         cfg->inline_depth --;
7188
7189         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7190                 if (cfg->verbose_level > 2)
7191                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7192
7193                 cfg->stat_inlined_methods++;
7194
7195                 /* always add some code to avoid block split failures */
7196                 MONO_INST_NEW (cfg, ins, OP_NOP);
7197                 MONO_ADD_INS (prev_cbb, ins);
7198
7199                 prev_cbb->next_bb = sbblock;
7200                 link_bblock (cfg, prev_cbb, sbblock);
7201
7202                 /*
7203                  * Get rid of the begin and end bblocks if possible to aid local
7204                  * optimizations.
7205                  */
7206                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7207
7208                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7209                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7210
7211                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7212                         MonoBasicBlock *prev = ebblock->in_bb [0];
7213
7214                         if (prev->next_bb == ebblock) {
7215                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7216                                 cfg->cbb = prev;
7217                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7218                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7219                                         cfg->cbb = prev_cbb;
7220                                 }
7221                         } else {
7222                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7223                                 cfg->cbb = ebblock;
7224                         }
7225                 } else {
7226                         /*
7227                          * Its possible that the rvar is set in some prev bblock, but not in others.
7228                          * (#1835).
7229                          */
7230                         if (rvar) {
7231                                 MonoBasicBlock *bb;
7232
7233                                 for (i = 0; i < ebblock->in_count; ++i) {
7234                                         bb = ebblock->in_bb [i];
7235
7236                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7237                                                 cfg->cbb = bb;
7238
7239                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7240                                         }
7241                                 }
7242                         }
7243
7244                         cfg->cbb = ebblock;
7245                 }
7246
7247                 if (rvar) {
7248                         /*
7249                          * If the inlined method contains only a throw, then the ret var is not
7250                          * set, so set it to a dummy value.
7251                          */
7252                         if (!ret_var_set)
7253                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7254
7255                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7256                         *sp++ = ins;
7257                 }
7258                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7259                 return costs + 1;
7260         } else {
7261                 if (cfg->verbose_level > 2)
7262                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7263                 cfg->exception_type = MONO_EXCEPTION_NONE;
7264                 mono_loader_clear_error ();
7265
7266                 /* This gets rid of the newly added bblocks */
7267                 cfg->cbb = prev_cbb;
7268         }
7269         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7270         return 0;
7271 }
7272
7273 /*
7274  * Some of these comments may well be out-of-date.
7275  * Design decisions: we do a single pass over the IL code (and we do bblock
7276  * splitting/merging in the few cases when it's required: a back jump to an IL
7277  * address that was not already seen as bblock starting point).
7278  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7279  * Complex operations are decomposed in simpler ones right away. We need to let the
7280  * arch-specific code peek and poke inside this process somehow (except when the
7281  * optimizations can take advantage of the full semantic info of coarse opcodes).
7282  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7283  * MonoInst->opcode initially is the IL opcode or some simplification of that
7284  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7285  * opcode with value bigger than OP_LAST.
7286  * At this point the IR can be handed over to an interpreter, a dumb code generator
7287  * or to the optimizing code generator that will translate it to SSA form.
7288  *
7289  * Profiling directed optimizations.
7290  * We may compile by default with few or no optimizations and instrument the code
7291  * or the user may indicate what methods to optimize the most either in a config file
7292  * or through repeated runs where the compiler applies offline the optimizations to
7293  * each method and then decides if it was worth it.
7294  */
7295
7296 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7297 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7298 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7299 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7300 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7301 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7302 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7303 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7304
7305 /* offset from br.s -> br like opcodes */
7306 #define BIG_BRANCH_OFFSET 13
7307
7308 static gboolean
7309 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7310 {
7311         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7312
7313         return b == NULL || b == bb;
7314 }
7315
7316 static int
7317 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7318 {
7319         unsigned char *ip = start;
7320         unsigned char *target;
7321         int i;
7322         guint cli_addr;
7323         MonoBasicBlock *bblock;
7324         const MonoOpcode *opcode;
7325
7326         while (ip < end) {
7327                 cli_addr = ip - start;
7328                 i = mono_opcode_value ((const guint8 **)&ip, end);
7329                 if (i < 0)
7330                         UNVERIFIED;
7331                 opcode = &mono_opcodes [i];
7332                 switch (opcode->argument) {
7333                 case MonoInlineNone:
7334                         ip++;
7335                         break;
7336                 case MonoInlineString:
7337                 case MonoInlineType:
7338                 case MonoInlineField:
7339                 case MonoInlineMethod:
7340                 case MonoInlineTok:
7341                 case MonoInlineSig:
7342                 case MonoShortInlineR:
7343                 case MonoInlineI:
7344                         ip += 5;
7345                         break;
7346                 case MonoInlineVar:
7347                         ip += 3;
7348                         break;
7349                 case MonoShortInlineVar:
7350                 case MonoShortInlineI:
7351                         ip += 2;
7352                         break;
7353                 case MonoShortInlineBrTarget:
7354                         target = start + cli_addr + 2 + (signed char)ip [1];
7355                         GET_BBLOCK (cfg, bblock, target);
7356                         ip += 2;
7357                         if (ip < end)
7358                                 GET_BBLOCK (cfg, bblock, ip);
7359                         break;
7360                 case MonoInlineBrTarget:
7361                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7362                         GET_BBLOCK (cfg, bblock, target);
7363                         ip += 5;
7364                         if (ip < end)
7365                                 GET_BBLOCK (cfg, bblock, ip);
7366                         break;
7367                 case MonoInlineSwitch: {
7368                         guint32 n = read32 (ip + 1);
7369                         guint32 j;
7370                         ip += 5;
7371                         cli_addr += 5 + 4 * n;
7372                         target = start + cli_addr;
7373                         GET_BBLOCK (cfg, bblock, target);
7374
7375                         for (j = 0; j < n; ++j) {
7376                                 target = start + cli_addr + (gint32)read32 (ip);
7377                                 GET_BBLOCK (cfg, bblock, target);
7378                                 ip += 4;
7379                         }
7380                         break;
7381                 }
7382                 case MonoInlineR:
7383                 case MonoInlineI8:
7384                         ip += 9;
7385                         break;
7386                 default:
7387                         g_assert_not_reached ();
7388                 }
7389
7390                 if (i == CEE_THROW) {
7391                         unsigned char *bb_start = ip - 1;
7392
7393                         /* Find the start of the bblock containing the throw */
7394                         bblock = NULL;
7395                         while ((bb_start >= start) && !bblock) {
7396                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7397                                 bb_start --;
7398                         }
7399                         if (bblock)
7400                                 bblock->out_of_line = 1;
7401                 }
7402         }
7403         return 0;
7404 unverified:
7405 exception_exit:
7406         *pos = ip;
7407         return 1;
7408 }
7409
7410 static inline MonoMethod *
7411 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7412 {
7413         MonoMethod *method;
7414
7415         mono_error_init (error);
7416
7417         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7418                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7419                 if (context) {
7420                         method = mono_class_inflate_generic_method_checked (method, context, error);
7421                 }
7422         } else {
7423                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7424         }
7425
7426         return method;
7427 }
7428
7429 static inline MonoMethod *
7430 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7431 {
7432         MonoError error;
7433         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7434
7435         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7436                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7437                 method = NULL;
7438         }
7439
7440         if (!method && !cfg)
7441                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7442
7443         return method;
7444 }
7445
7446 static inline MonoClass*
7447 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7448 {
7449         MonoError error;
7450         MonoClass *klass;
7451
7452         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7453                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7454                 if (context) {
7455                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7456                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7457                 }
7458         } else {
7459                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7460                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7461         }
7462         if (klass)
7463                 mono_class_init (klass);
7464         return klass;
7465 }
7466
7467 static inline MonoMethodSignature*
7468 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7469 {
7470         MonoMethodSignature *fsig;
7471
7472         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7473                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7474         } else {
7475                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7476         }
7477         if (context) {
7478                 MonoError error;
7479                 fsig = mono_inflate_generic_signature(fsig, context, &error);
7480                 // FIXME:
7481                 g_assert(mono_error_ok(&error));
7482         }
7483         return fsig;
7484 }
7485
7486 static MonoMethod*
7487 throw_exception (void)
7488 {
7489         static MonoMethod *method = NULL;
7490
7491         if (!method) {
7492                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7493                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7494         }
7495         g_assert (method);
7496         return method;
7497 }
7498
7499 static void
7500 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7501 {
7502         MonoMethod *thrower = throw_exception ();
7503         MonoInst *args [1];
7504
7505         EMIT_NEW_PCONST (cfg, args [0], ex);
7506         mono_emit_method_call (cfg, thrower, args, NULL);
7507 }
7508
7509 /*
7510  * Return the original method is a wrapper is specified. We can only access
7511  * the custom attributes from the original method.
7512  */
7513 static MonoMethod*
7514 get_original_method (MonoMethod *method)
7515 {
7516         if (method->wrapper_type == MONO_WRAPPER_NONE)
7517                 return method;
7518
7519         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7520         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7521                 return NULL;
7522
7523         /* in other cases we need to find the original method */
7524         return mono_marshal_method_from_wrapper (method);
7525 }
7526
7527 static void
7528 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7529 {
7530         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7531         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7532         if (ex)
7533                 emit_throw_exception (cfg, ex);
7534 }
7535
7536 static void
7537 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7538 {
7539         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7540         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7541         if (ex)
7542                 emit_throw_exception (cfg, ex);
7543 }
7544
7545 /*
7546  * Check that the IL instructions at ip are the array initialization
7547  * sequence and return the pointer to the data and the size.
7548  */
7549 static const char*
7550 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7551 {
7552         /*
7553          * newarr[System.Int32]
7554          * dup
7555          * ldtoken field valuetype ...
7556          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7557          */
7558         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7559                 MonoError error;
7560                 guint32 token = read32 (ip + 7);
7561                 guint32 field_token = read32 (ip + 2);
7562                 guint32 field_index = field_token & 0xffffff;
7563                 guint32 rva;
7564                 const char *data_ptr;
7565                 int size = 0;
7566                 MonoMethod *cmethod;
7567                 MonoClass *dummy_class;
7568                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7569                 int dummy_align;
7570
7571                 if (!field) {
7572                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7573                         return NULL;
7574                 }
7575
7576                 *out_field_token = field_token;
7577
7578                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7579                 if (!cmethod)
7580                         return NULL;
7581                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7582                         return NULL;
7583                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7584                 case MONO_TYPE_BOOLEAN:
7585                 case MONO_TYPE_I1:
7586                 case MONO_TYPE_U1:
7587                         size = 1; break;
7588                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7589 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7590                 case MONO_TYPE_CHAR:
7591                 case MONO_TYPE_I2:
7592                 case MONO_TYPE_U2:
7593                         size = 2; break;
7594                 case MONO_TYPE_I4:
7595                 case MONO_TYPE_U4:
7596                 case MONO_TYPE_R4:
7597                         size = 4; break;
7598                 case MONO_TYPE_R8:
7599                 case MONO_TYPE_I8:
7600                 case MONO_TYPE_U8:
7601                         size = 8; break;
7602 #endif
7603                 default:
7604                         return NULL;
7605                 }
7606                 size *= len;
7607                 if (size > mono_type_size (field->type, &dummy_align))
7608                     return NULL;
7609                 *out_size = size;
7610                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7611                 if (!image_is_dynamic (method->klass->image)) {
7612                         field_index = read32 (ip + 2) & 0xffffff;
7613                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7614                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7615                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7616                         /* for aot code we do the lookup on load */
7617                         if (aot && data_ptr)
7618                                 return (const char *)GUINT_TO_POINTER (rva);
7619                 } else {
7620                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7621                         g_assert (!aot);
7622                         data_ptr = mono_field_get_data (field);
7623                 }
7624                 return data_ptr;
7625         }
7626         return NULL;
7627 }
7628
7629 static void
7630 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7631 {
7632         MonoError error;
7633         char *method_fname = mono_method_full_name (method, TRUE);
7634         char *method_code;
7635         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7636
7637         if (!header) {
7638                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7639                 mono_error_cleanup (&error);
7640         } else if (header->code_size == 0)
7641                 method_code = g_strdup ("method body is empty.");
7642         else
7643                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7644         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7645         g_free (method_fname);
7646         g_free (method_code);
7647         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7648 }
7649
7650 static void
7651 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7652 {
7653         MonoInst *ins;
7654         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7655         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7656                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7657                 /* Optimize reg-reg moves away */
7658                 /*
7659                  * Can't optimize other opcodes, since sp[0] might point to
7660                  * the last ins of a decomposed opcode.
7661                  */
7662                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7663         } else {
7664                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7665         }
7666 }
7667
7668 /*
7669  * ldloca inhibits many optimizations so try to get rid of it in common
7670  * cases.
7671  */
7672 static inline unsigned char *
7673 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7674 {
7675         int local, token;
7676         MonoClass *klass;
7677         MonoType *type;
7678
7679         if (size == 1) {
7680                 local = ip [1];
7681                 ip += 2;
7682         } else {
7683                 local = read16 (ip + 2);
7684                 ip += 4;
7685         }
7686
7687         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7688                 /* From the INITOBJ case */
7689                 token = read32 (ip + 2);
7690                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7691                 CHECK_TYPELOAD (klass);
7692                 type = mini_get_underlying_type (&klass->byval_arg);
7693                 emit_init_local (cfg, local, type, TRUE);
7694                 return ip + 6;
7695         }
7696  exception_exit:
7697         return NULL;
7698 }
7699
7700 static MonoInst*
7701 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7702 {
7703         MonoInst *icall_args [16];
7704         MonoInst *call_target, *ins, *vtable_ins;
7705         int arg_reg, this_reg, vtable_reg;
7706         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7707         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7708         gboolean variant_iface = FALSE;
7709         guint32 slot;
7710         int offset;
7711
7712         /*
7713          * In llvm-only mode, vtables contain function descriptors instead of
7714          * method addresses/trampolines.
7715          */
7716         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7717
7718         if (is_iface)
7719                 slot = mono_method_get_imt_slot (cmethod);
7720         else
7721                 slot = mono_method_get_vtable_index (cmethod);
7722
7723         this_reg = sp [0]->dreg;
7724
7725         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7726                 variant_iface = TRUE;
7727
7728         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7729                 /*
7730                  * The simplest case, a normal virtual call.
7731                  */
7732                 int slot_reg = alloc_preg (cfg);
7733                 int addr_reg = alloc_preg (cfg);
7734                 int arg_reg = alloc_preg (cfg);
7735                 MonoBasicBlock *non_null_bb;
7736
7737                 vtable_reg = alloc_preg (cfg);
7738                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7739                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7740
7741                 /* Load the vtable slot, which contains a function descriptor. */
7742                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7743
7744                 NEW_BBLOCK (cfg, non_null_bb);
7745
7746                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7747                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7748                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7749
7750                 /* Slow path */
7751                 // FIXME: Make the wrapper use the preserveall cconv
7752                 // FIXME: Use one icall per slot for small slot numbers ?
7753                 icall_args [0] = vtable_ins;
7754                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7755                 /* Make the icall return the vtable slot value to save some code space */
7756                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7757                 ins->dreg = slot_reg;
7758                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7759
7760                 /* Fastpath */
7761                 MONO_START_BB (cfg, non_null_bb);
7762                 /* Load the address + arg from the vtable slot */
7763                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7764                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7765
7766                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7767         }
7768
7769         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7770                 /*
7771                  * A simple interface call
7772                  *
7773                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7774                  * The imt slot contains a function descriptor for a runtime function + arg.
7775                  */
7776                 int slot_reg = alloc_preg (cfg);
7777                 int addr_reg = alloc_preg (cfg);
7778                 int arg_reg = alloc_preg (cfg);
7779                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7780
7781                 vtable_reg = alloc_preg (cfg);
7782                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7783                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7784
7785                 /*
7786                  * The slot is already initialized when the vtable is created so there is no need
7787                  * to check it here.
7788                  */
7789
7790                 /* Load the imt slot, which contains a function descriptor. */
7791                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7792
7793                 /* Load the address + arg of the imt thunk from the imt slot */
7794                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7795                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7796                 /*
7797                  * IMT thunks in llvm-only mode are C functions which take an info argument
7798                  * plus the imt method and return the ftndesc to call.
7799                  */
7800                 icall_args [0] = thunk_arg_ins;
7801                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7802                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7803                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7804
7805                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7806         }
7807
7808         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7809                 /*
7810                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7811                  * dynamically extended as more instantiations are discovered.
7812                  * This handles generic virtual methods both on classes and interfaces.
7813                  */
7814                 int slot_reg = alloc_preg (cfg);
7815                 int addr_reg = alloc_preg (cfg);
7816                 int arg_reg = alloc_preg (cfg);
7817                 int ftndesc_reg = alloc_preg (cfg);
7818                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7819                 MonoBasicBlock *slowpath_bb, *end_bb;
7820
7821                 NEW_BBLOCK (cfg, slowpath_bb);
7822                 NEW_BBLOCK (cfg, end_bb);
7823
7824                 vtable_reg = alloc_preg (cfg);
7825                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7826                 if (is_iface)
7827                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7828                 else
7829                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7830
7831                 /* Load the slot, which contains a function descriptor. */
7832                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7833
7834                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7835                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7836                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7837                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7838
7839                 /* Fastpath */
7840                 /* Same as with iface calls */
7841                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7842                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7843                 icall_args [0] = thunk_arg_ins;
7844                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7845                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7846                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7847                 ftndesc_ins->dreg = ftndesc_reg;
7848                 /*
7849                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7850                  * they don't know about yet. Fall back to the slowpath in that case.
7851                  */
7852                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7853                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7854
7855                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7856
7857                 /* Slowpath */
7858                 MONO_START_BB (cfg, slowpath_bb);
7859                 icall_args [0] = vtable_ins;
7860                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7861                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7862                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7863                 if (is_iface)
7864                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7865                 else
7866                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7867                 ftndesc_ins->dreg = ftndesc_reg;
7868                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7869
7870                 /* Common case */
7871                 MONO_START_BB (cfg, end_bb);
7872                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7873         }
7874
7875         /*
7876          * Non-optimized cases
7877          */
7878         icall_args [0] = sp [0];
7879         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7880
7881         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7882                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7883
7884         arg_reg = alloc_preg (cfg);
7885         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7886         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7887
7888         g_assert (is_gsharedvt);
7889         if (is_iface)
7890                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7891         else
7892                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7893
7894         /*
7895          * Pass the extra argument even if the callee doesn't receive it, most
7896          * calling conventions allow this.
7897          */
7898         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7899 }
7900
7901 static gboolean
7902 is_exception_class (MonoClass *klass)
7903 {
7904         while (klass) {
7905                 if (klass == mono_defaults.exception_class)
7906                         return TRUE;
7907                 klass = klass->parent;
7908         }
7909         return FALSE;
7910 }
7911
7912 /*
7913  * is_jit_optimizer_disabled:
7914  *
7915  *   Determine whenever M's assembly has a DebuggableAttribute with the
7916  * IsJITOptimizerDisabled flag set.
7917  */
7918 static gboolean
7919 is_jit_optimizer_disabled (MonoMethod *m)
7920 {
7921         MonoError error;
7922         MonoAssembly *ass = m->klass->image->assembly;
7923         MonoCustomAttrInfo* attrs;
7924         MonoClass *klass;
7925         int i;
7926         gboolean val = FALSE;
7927
7928         g_assert (ass);
7929         if (ass->jit_optimizer_disabled_inited)
7930                 return ass->jit_optimizer_disabled;
7931
7932         klass = mono_class_try_get_debuggable_attribute_class ();
7933
7934         if (!klass) {
7935                 /* Linked away */
7936                 ass->jit_optimizer_disabled = FALSE;
7937                 mono_memory_barrier ();
7938                 ass->jit_optimizer_disabled_inited = TRUE;
7939                 return FALSE;
7940         }
7941
7942         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7943         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7944         if (attrs) {
7945                 for (i = 0; i < attrs->num_attrs; ++i) {
7946                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7947                         const gchar *p;
7948                         MonoMethodSignature *sig;
7949
7950                         if (!attr->ctor || attr->ctor->klass != klass)
7951                                 continue;
7952                         /* Decode the attribute. See reflection.c */
7953                         p = (const char*)attr->data;
7954                         g_assert (read16 (p) == 0x0001);
7955                         p += 2;
7956
7957                         // FIXME: Support named parameters
7958                         sig = mono_method_signature (attr->ctor);
7959                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7960                                 continue;
7961                         /* Two boolean arguments */
7962                         p ++;
7963                         val = *p;
7964                 }
7965                 mono_custom_attrs_free (attrs);
7966         }
7967
7968         ass->jit_optimizer_disabled = val;
7969         mono_memory_barrier ();
7970         ass->jit_optimizer_disabled_inited = TRUE;
7971
7972         return val;
7973 }
7974
7975 static gboolean
7976 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7977 {
7978         gboolean supported_tail_call;
7979         int i;
7980
7981         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7982
7983         for (i = 0; i < fsig->param_count; ++i) {
7984                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7985                         /* These can point to the current method's stack */
7986                         supported_tail_call = FALSE;
7987         }
7988         if (fsig->hasthis && cmethod->klass->valuetype)
7989                 /* this might point to the current method's stack */
7990                 supported_tail_call = FALSE;
7991         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7992                 supported_tail_call = FALSE;
7993         if (cfg->method->save_lmf)
7994                 supported_tail_call = FALSE;
7995         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7996                 supported_tail_call = FALSE;
7997         if (call_opcode != CEE_CALL)
7998                 supported_tail_call = FALSE;
7999
8000         /* Debugging support */
8001 #if 0
8002         if (supported_tail_call) {
8003                 if (!mono_debug_count ())
8004                         supported_tail_call = FALSE;
8005         }
8006 #endif
8007
8008         return supported_tail_call;
8009 }
8010
8011 /*
8012  * handle_ctor_call:
8013  *
8014  *   Handle calls made to ctors from NEWOBJ opcodes.
8015  */
8016 static void
8017 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8018                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8019 {
8020         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8021
8022         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8023                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8024                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8025                         mono_class_vtable (cfg->domain, cmethod->klass);
8026                         CHECK_TYPELOAD (cmethod->klass);
8027
8028                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8029                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8030                 } else {
8031                         if (context_used) {
8032                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8033                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8034                         } else {
8035                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8036
8037                                 CHECK_TYPELOAD (cmethod->klass);
8038                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8039                         }
8040                 }
8041         }
8042
8043         /* Avoid virtual calls to ctors if possible */
8044         if (mono_class_is_marshalbyref (cmethod->klass))
8045                 callvirt_this_arg = sp [0];
8046
8047         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8048                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8049                 CHECK_CFG_EXCEPTION;
8050         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8051                            mono_method_check_inlining (cfg, cmethod) &&
8052                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8053                 int costs;
8054
8055                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8056                         cfg->real_offset += 5;
8057
8058                         *inline_costs += costs - 5;
8059                 } else {
8060                         INLINE_FAILURE ("inline failure");
8061                         // FIXME-VT: Clean this up
8062                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8063                                 GSHAREDVT_FAILURE(*ip);
8064                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8065                 }
8066         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8067                 MonoInst *addr;
8068
8069                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8070
8071                 if (cfg->llvm_only) {
8072                         // FIXME: Avoid initializing vtable_arg
8073                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8074                 } else {
8075                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8076                 }
8077         } else if (context_used &&
8078                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8079                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8080                 MonoInst *cmethod_addr;
8081
8082                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8083
8084                 if (cfg->llvm_only) {
8085                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8086                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8087                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8088                 } else {
8089                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8090                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8091
8092                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8093                 }
8094         } else {
8095                 INLINE_FAILURE ("ctor call");
8096                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8097                                                                                   callvirt_this_arg, NULL, vtable_arg);
8098         }
8099  exception_exit:
8100         return;
8101 }
8102
8103 static void
8104 emit_setret (MonoCompile *cfg, MonoInst *val)
8105 {
8106         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8107         MonoInst *ins;
8108
8109         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8110                 MonoInst *ret_addr;
8111
8112                 if (!cfg->vret_addr) {
8113                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8114                 } else {
8115                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8116
8117                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8118                         ins->klass = mono_class_from_mono_type (ret_type);
8119                 }
8120         } else {
8121 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8122                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8123                         MonoInst *iargs [1];
8124                         MonoInst *conv;
8125
8126                         iargs [0] = val;
8127                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8128                         mono_arch_emit_setret (cfg, cfg->method, conv);
8129                 } else {
8130                         mono_arch_emit_setret (cfg, cfg->method, val);
8131                 }
8132 #else
8133                 mono_arch_emit_setret (cfg, cfg->method, val);
8134 #endif
8135         }
8136 }
8137
8138 /*
8139  * mono_method_to_ir:
8140  *
8141  *   Translate the .net IL into linear IR.
8142  */
8143 int
8144 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8145                    MonoInst *return_var, MonoInst **inline_args,
8146                    guint inline_offset, gboolean is_virtual_call)
8147 {
8148         MonoError error;
8149         MonoInst *ins, **sp, **stack_start;
8150         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8151         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8152         MonoMethod *cmethod, *method_definition;
8153         MonoInst **arg_array;
8154         MonoMethodHeader *header;
8155         MonoImage *image;
8156         guint32 token, ins_flag;
8157         MonoClass *klass;
8158         MonoClass *constrained_class = NULL;
8159         unsigned char *ip, *end, *target, *err_pos;
8160         MonoMethodSignature *sig;
8161         MonoGenericContext *generic_context = NULL;
8162         MonoGenericContainer *generic_container = NULL;
8163         MonoType **param_types;
8164         int i, n, start_new_bblock, dreg;
8165         int num_calls = 0, inline_costs = 0;
8166         int breakpoint_id = 0;
8167         guint num_args;
8168         GSList *class_inits = NULL;
8169         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8170         int context_used;
8171         gboolean init_locals, seq_points, skip_dead_blocks;
8172         gboolean sym_seq_points = FALSE;
8173         MonoDebugMethodInfo *minfo;
8174         MonoBitSet *seq_point_locs = NULL;
8175         MonoBitSet *seq_point_set_locs = NULL;
8176
8177         cfg->disable_inline = is_jit_optimizer_disabled (method);
8178
8179         /* serialization and xdomain stuff may need access to private fields and methods */
8180         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8181         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8182         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8183         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8184         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8185         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8186
8187         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8188         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8189         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8190         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8191         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8192
8193         image = method->klass->image;
8194         header = mono_method_get_header_checked (method, &cfg->error);
8195         if (!header) {
8196                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8197                 goto exception_exit;
8198         }
8199         generic_container = mono_method_get_generic_container (method);
8200         sig = mono_method_signature (method);
8201         num_args = sig->hasthis + sig->param_count;
8202         ip = (unsigned char*)header->code;
8203         cfg->cil_start = ip;
8204         end = ip + header->code_size;
8205         cfg->stat_cil_code_size += header->code_size;
8206
8207         seq_points = cfg->gen_seq_points && cfg->method == method;
8208
8209         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8210                 /* We could hit a seq point before attaching to the JIT (#8338) */
8211                 seq_points = FALSE;
8212         }
8213
8214         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8215                 minfo = mono_debug_lookup_method (method);
8216                 if (minfo) {
8217                         MonoSymSeqPoint *sps;
8218                         int i, n_il_offsets;
8219
8220                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8221                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8222                         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);
8223                         sym_seq_points = TRUE;
8224                         for (i = 0; i < n_il_offsets; ++i) {
8225                                 if (sps [i].il_offset < header->code_size)
8226                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8227                         }
8228                         g_free (sps);
8229                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8230                         /* Methods without line number info like auto-generated property accessors */
8231                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8232                         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);
8233                         sym_seq_points = TRUE;
8234                 }
8235         }
8236
8237         /*
8238          * Methods without init_locals set could cause asserts in various passes
8239          * (#497220). To work around this, we emit dummy initialization opcodes
8240          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8241          * on some platforms.
8242          */
8243         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8244                 init_locals = header->init_locals;
8245         else
8246                 init_locals = TRUE;
8247
8248         method_definition = method;
8249         while (method_definition->is_inflated) {
8250                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8251                 method_definition = imethod->declaring;
8252         }
8253
8254         /* SkipVerification is not allowed if core-clr is enabled */
8255         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8256                 dont_verify = TRUE;
8257                 dont_verify_stloc = TRUE;
8258         }
8259
8260         if (sig->is_inflated)
8261                 generic_context = mono_method_get_context (method);
8262         else if (generic_container)
8263                 generic_context = &generic_container->context;
8264         cfg->generic_context = generic_context;
8265
8266         if (!cfg->gshared)
8267                 g_assert (!sig->has_type_parameters);
8268
8269         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8270                 g_assert (method->is_inflated);
8271                 g_assert (mono_method_get_context (method)->method_inst);
8272         }
8273         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8274                 g_assert (sig->generic_param_count);
8275
8276         if (cfg->method == method) {
8277                 cfg->real_offset = 0;
8278         } else {
8279                 cfg->real_offset = inline_offset;
8280         }
8281
8282         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8283         cfg->cil_offset_to_bb_len = header->code_size;
8284
8285         cfg->current_method = method;
8286
8287         if (cfg->verbose_level > 2)
8288                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8289
8290         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8291         if (sig->hasthis)
8292                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8293         for (n = 0; n < sig->param_count; ++n)
8294                 param_types [n + sig->hasthis] = sig->params [n];
8295         cfg->arg_types = param_types;
8296
8297         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8298         if (cfg->method == method) {
8299
8300                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8301                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8302
8303                 /* ENTRY BLOCK */
8304                 NEW_BBLOCK (cfg, start_bblock);
8305                 cfg->bb_entry = start_bblock;
8306                 start_bblock->cil_code = NULL;
8307                 start_bblock->cil_length = 0;
8308
8309                 /* EXIT BLOCK */
8310                 NEW_BBLOCK (cfg, end_bblock);
8311                 cfg->bb_exit = end_bblock;
8312                 end_bblock->cil_code = NULL;
8313                 end_bblock->cil_length = 0;
8314                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8315                 g_assert (cfg->num_bblocks == 2);
8316
8317                 arg_array = cfg->args;
8318
8319                 if (header->num_clauses) {
8320                         cfg->spvars = g_hash_table_new (NULL, NULL);
8321                         cfg->exvars = g_hash_table_new (NULL, NULL);
8322                 }
8323                 /* handle exception clauses */
8324                 for (i = 0; i < header->num_clauses; ++i) {
8325                         MonoBasicBlock *try_bb;
8326                         MonoExceptionClause *clause = &header->clauses [i];
8327                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8328
8329                         try_bb->real_offset = clause->try_offset;
8330                         try_bb->try_start = TRUE;
8331                         try_bb->region = ((i + 1) << 8) | clause->flags;
8332                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8333                         tblock->real_offset = clause->handler_offset;
8334                         tblock->flags |= BB_EXCEPTION_HANDLER;
8335
8336                         /*
8337                          * Linking the try block with the EH block hinders inlining as we won't be able to
8338                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8339                          */
8340                         if (COMPILE_LLVM (cfg))
8341                                 link_bblock (cfg, try_bb, tblock);
8342
8343                         if (*(ip + clause->handler_offset) == CEE_POP)
8344                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8345
8346                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8347                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8348                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8349                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8350                                 MONO_ADD_INS (tblock, ins);
8351
8352                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8353                                         /* finally clauses already have a seq point */
8354                                         /* seq points for filter clauses are emitted below */
8355                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8356                                         MONO_ADD_INS (tblock, ins);
8357                                 }
8358
8359                                 /* todo: is a fault block unsafe to optimize? */
8360                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8361                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8362                         }
8363
8364                         /*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);
8365                           while (p < end) {
8366                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8367                           }*/
8368                         /* catch and filter blocks get the exception object on the stack */
8369                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8370                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8371
8372                                 /* mostly like handle_stack_args (), but just sets the input args */
8373                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8374                                 tblock->in_scount = 1;
8375                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8376                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8377
8378                                 cfg->cbb = tblock;
8379
8380 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8381                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8382                                 if (!cfg->compile_llvm) {
8383                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8384                                         ins->dreg = tblock->in_stack [0]->dreg;
8385                                         MONO_ADD_INS (tblock, ins);
8386                                 }
8387 #else
8388                                 MonoInst *dummy_use;
8389
8390                                 /*
8391                                  * Add a dummy use for the exvar so its liveness info will be
8392                                  * correct.
8393                                  */
8394                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8395 #endif
8396
8397                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8398                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8399                                         MONO_ADD_INS (tblock, ins);
8400                                 }
8401
8402                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8403                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8404                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8405                                         tblock->real_offset = clause->data.filter_offset;
8406                                         tblock->in_scount = 1;
8407                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8408                                         /* The filter block shares the exvar with the handler block */
8409                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8410                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8411                                         MONO_ADD_INS (tblock, ins);
8412                                 }
8413                         }
8414
8415                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8416                                         clause->data.catch_class &&
8417                                         cfg->gshared &&
8418                                         mono_class_check_context_used (clause->data.catch_class)) {
8419                                 /*
8420                                  * In shared generic code with catch
8421                                  * clauses containing type variables
8422                                  * the exception handling code has to
8423                                  * be able to get to the rgctx.
8424                                  * Therefore we have to make sure that
8425                                  * the vtable/mrgctx argument (for
8426                                  * static or generic methods) or the
8427                                  * "this" argument (for non-static
8428                                  * methods) are live.
8429                                  */
8430                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8431                                                 mini_method_get_context (method)->method_inst ||
8432                                                 method->klass->valuetype) {
8433                                         mono_get_vtable_var (cfg);
8434                                 } else {
8435                                         MonoInst *dummy_use;
8436
8437                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8438                                 }
8439                         }
8440                 }
8441         } else {
8442                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8443                 cfg->cbb = start_bblock;
8444                 cfg->args = arg_array;
8445                 mono_save_args (cfg, sig, inline_args);
8446         }
8447
8448         /* FIRST CODE BLOCK */
8449         NEW_BBLOCK (cfg, tblock);
8450         tblock->cil_code = ip;
8451         cfg->cbb = tblock;
8452         cfg->ip = ip;
8453
8454         ADD_BBLOCK (cfg, tblock);
8455
8456         if (cfg->method == method) {
8457                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8458                 if (breakpoint_id) {
8459                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8460                         MONO_ADD_INS (cfg->cbb, ins);
8461                 }
8462         }
8463
8464         /* we use a separate basic block for the initialization code */
8465         NEW_BBLOCK (cfg, init_localsbb);
8466         cfg->bb_init = init_localsbb;
8467         init_localsbb->real_offset = cfg->real_offset;
8468         start_bblock->next_bb = init_localsbb;
8469         init_localsbb->next_bb = cfg->cbb;
8470         link_bblock (cfg, start_bblock, init_localsbb);
8471         link_bblock (cfg, init_localsbb, cfg->cbb);
8472
8473         cfg->cbb = init_localsbb;
8474
8475         if (cfg->gsharedvt && cfg->method == method) {
8476                 MonoGSharedVtMethodInfo *info;
8477                 MonoInst *var, *locals_var;
8478                 int dreg;
8479
8480                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8481                 info->method = cfg->method;
8482                 info->count_entries = 16;
8483                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8484                 cfg->gsharedvt_info = info;
8485
8486                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8487                 /* prevent it from being register allocated */
8488                 //var->flags |= MONO_INST_VOLATILE;
8489                 cfg->gsharedvt_info_var = var;
8490
8491                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8492                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8493
8494                 /* Allocate locals */
8495                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8496                 /* prevent it from being register allocated */
8497                 //locals_var->flags |= MONO_INST_VOLATILE;
8498                 cfg->gsharedvt_locals_var = locals_var;
8499
8500                 dreg = alloc_ireg (cfg);
8501                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8502
8503                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8504                 ins->dreg = locals_var->dreg;
8505                 ins->sreg1 = dreg;
8506                 MONO_ADD_INS (cfg->cbb, ins);
8507                 cfg->gsharedvt_locals_var_ins = ins;
8508
8509                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8510                 /*
8511                 if (init_locals)
8512                         ins->flags |= MONO_INST_INIT;
8513                 */
8514         }
8515
8516         if (mono_security_core_clr_enabled ()) {
8517                 /* check if this is native code, e.g. an icall or a p/invoke */
8518                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8519                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8520                         if (wrapped) {
8521                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8522                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8523
8524                                 /* if this ia a native call then it can only be JITted from platform code */
8525                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8526                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8527                                                 MonoException *ex = icall ? mono_get_exception_security () :
8528                                                         mono_get_exception_method_access ();
8529                                                 emit_throw_exception (cfg, ex);
8530                                         }
8531                                 }
8532                         }
8533                 }
8534         }
8535
8536         CHECK_CFG_EXCEPTION;
8537
8538         if (header->code_size == 0)
8539                 UNVERIFIED;
8540
8541         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8542                 ip = err_pos;
8543                 UNVERIFIED;
8544         }
8545
8546         if (cfg->method == method)
8547                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8548
8549         for (n = 0; n < header->num_locals; ++n) {
8550                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8551                         UNVERIFIED;
8552         }
8553         class_inits = NULL;
8554
8555         /* We force the vtable variable here for all shared methods
8556            for the possibility that they might show up in a stack
8557            trace where their exact instantiation is needed. */
8558         if (cfg->gshared && method == cfg->method) {
8559                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8560                                 mini_method_get_context (method)->method_inst ||
8561                                 method->klass->valuetype) {
8562                         mono_get_vtable_var (cfg);
8563                 } else {
8564                         /* FIXME: Is there a better way to do this?
8565                            We need the variable live for the duration
8566                            of the whole method. */
8567                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8568                 }
8569         }
8570
8571         /* add a check for this != NULL to inlined methods */
8572         if (is_virtual_call) {
8573                 MonoInst *arg_ins;
8574
8575                 NEW_ARGLOAD (cfg, arg_ins, 0);
8576                 MONO_ADD_INS (cfg->cbb, arg_ins);
8577                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8578         }
8579
8580         skip_dead_blocks = !dont_verify;
8581         if (skip_dead_blocks) {
8582                 original_bb = bb = mono_basic_block_split (method, &cfg->error);
8583                 CHECK_CFG_ERROR;
8584                 g_assert (bb);
8585         }
8586
8587         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8588         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8589
8590         ins_flag = 0;
8591         start_new_bblock = 0;
8592         while (ip < end) {
8593                 if (cfg->method == method)
8594                         cfg->real_offset = ip - header->code;
8595                 else
8596                         cfg->real_offset = inline_offset;
8597                 cfg->ip = ip;
8598
8599                 context_used = 0;
8600
8601                 if (start_new_bblock) {
8602                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8603                         if (start_new_bblock == 2) {
8604                                 g_assert (ip == tblock->cil_code);
8605                         } else {
8606                                 GET_BBLOCK (cfg, tblock, ip);
8607                         }
8608                         cfg->cbb->next_bb = tblock;
8609                         cfg->cbb = tblock;
8610                         start_new_bblock = 0;
8611                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8612                                 if (cfg->verbose_level > 3)
8613                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8614                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8615                                 *sp++ = ins;
8616                         }
8617                         if (class_inits)
8618                                 g_slist_free (class_inits);
8619                         class_inits = NULL;
8620                 } else {
8621                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8622                                 link_bblock (cfg, cfg->cbb, tblock);
8623                                 if (sp != stack_start) {
8624                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8625                                         sp = stack_start;
8626                                         CHECK_UNVERIFIABLE (cfg);
8627                                 }
8628                                 cfg->cbb->next_bb = tblock;
8629                                 cfg->cbb = tblock;
8630                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8631                                         if (cfg->verbose_level > 3)
8632                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8633                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8634                                         *sp++ = ins;
8635                                 }
8636                                 g_slist_free (class_inits);
8637                                 class_inits = NULL;
8638                         }
8639                 }
8640
8641                 if (skip_dead_blocks) {
8642                         int ip_offset = ip - header->code;
8643
8644                         if (ip_offset == bb->end)
8645                                 bb = bb->next;
8646
8647                         if (bb->dead) {
8648                                 int op_size = mono_opcode_size (ip, end);
8649                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8650
8651                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8652
8653                                 if (ip_offset + op_size == bb->end) {
8654                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8655                                         MONO_ADD_INS (cfg->cbb, ins);
8656                                         start_new_bblock = 1;
8657                                 }
8658
8659                                 ip += op_size;
8660                                 continue;
8661                         }
8662                 }
8663                 /*
8664                  * Sequence points are points where the debugger can place a breakpoint.
8665                  * Currently, we generate these automatically at points where the IL
8666                  * stack is empty.
8667                  */
8668                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8669                         /*
8670                          * Make methods interruptable at the beginning, and at the targets of
8671                          * backward branches.
8672                          * Also, do this at the start of every bblock in methods with clauses too,
8673                          * to be able to handle instructions with inprecise control flow like
8674                          * throw/endfinally.
8675                          * Backward branches are handled at the end of method-to-ir ().
8676                          */
8677                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8678                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8679
8680                         /* Avoid sequence points on empty IL like .volatile */
8681                         // FIXME: Enable this
8682                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8683                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8684                         if ((sp != stack_start) && !sym_seq_point)
8685                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8686                         MONO_ADD_INS (cfg->cbb, ins);
8687
8688                         if (sym_seq_points)
8689                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8690                 }
8691
8692                 cfg->cbb->real_offset = cfg->real_offset;
8693
8694                 if ((cfg->method == method) && cfg->coverage_info) {
8695                         guint32 cil_offset = ip - header->code;
8696                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8697
8698                         /* TODO: Use an increment here */
8699 #if defined(TARGET_X86)
8700                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8701                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8702                         ins->inst_imm = 1;
8703                         MONO_ADD_INS (cfg->cbb, ins);
8704 #else
8705                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8706                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8707 #endif
8708                 }
8709
8710                 if (cfg->verbose_level > 3)
8711                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8712
8713                 switch (*ip) {
8714                 case CEE_NOP:
8715                         if (seq_points && !sym_seq_points && sp != stack_start) {
8716                                 /*
8717                                  * The C# compiler uses these nops to notify the JIT that it should
8718                                  * insert seq points.
8719                                  */
8720                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8721                                 MONO_ADD_INS (cfg->cbb, ins);
8722                         }
8723                         if (cfg->keep_cil_nops)
8724                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8725                         else
8726                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8727                         ip++;
8728                         MONO_ADD_INS (cfg->cbb, ins);
8729                         break;
8730                 case CEE_BREAK:
8731                         if (should_insert_brekpoint (cfg->method)) {
8732                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8733                         } else {
8734                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8735                         }
8736                         ip++;
8737                         MONO_ADD_INS (cfg->cbb, ins);
8738                         break;
8739                 case CEE_LDARG_0:
8740                 case CEE_LDARG_1:
8741                 case CEE_LDARG_2:
8742                 case CEE_LDARG_3:
8743                         CHECK_STACK_OVF (1);
8744                         n = (*ip)-CEE_LDARG_0;
8745                         CHECK_ARG (n);
8746                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8747                         ip++;
8748                         *sp++ = ins;
8749                         break;
8750                 case CEE_LDLOC_0:
8751                 case CEE_LDLOC_1:
8752                 case CEE_LDLOC_2:
8753                 case CEE_LDLOC_3:
8754                         CHECK_STACK_OVF (1);
8755                         n = (*ip)-CEE_LDLOC_0;
8756                         CHECK_LOCAL (n);
8757                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8758                         ip++;
8759                         *sp++ = ins;
8760                         break;
8761                 case CEE_STLOC_0:
8762                 case CEE_STLOC_1:
8763                 case CEE_STLOC_2:
8764                 case CEE_STLOC_3: {
8765                         CHECK_STACK (1);
8766                         n = (*ip)-CEE_STLOC_0;
8767                         CHECK_LOCAL (n);
8768                         --sp;
8769                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8770                                 UNVERIFIED;
8771                         emit_stloc_ir (cfg, sp, header, n);
8772                         ++ip;
8773                         inline_costs += 1;
8774                         break;
8775                         }
8776                 case CEE_LDARG_S:
8777                         CHECK_OPSIZE (2);
8778                         CHECK_STACK_OVF (1);
8779                         n = ip [1];
8780                         CHECK_ARG (n);
8781                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8782                         *sp++ = ins;
8783                         ip += 2;
8784                         break;
8785                 case CEE_LDARGA_S:
8786                         CHECK_OPSIZE (2);
8787                         CHECK_STACK_OVF (1);
8788                         n = ip [1];
8789                         CHECK_ARG (n);
8790                         NEW_ARGLOADA (cfg, ins, n);
8791                         MONO_ADD_INS (cfg->cbb, ins);
8792                         *sp++ = ins;
8793                         ip += 2;
8794                         break;
8795                 case CEE_STARG_S:
8796                         CHECK_OPSIZE (2);
8797                         CHECK_STACK (1);
8798                         --sp;
8799                         n = ip [1];
8800                         CHECK_ARG (n);
8801                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8802                                 UNVERIFIED;
8803                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8804                         ip += 2;
8805                         break;
8806                 case CEE_LDLOC_S:
8807                         CHECK_OPSIZE (2);
8808                         CHECK_STACK_OVF (1);
8809                         n = ip [1];
8810                         CHECK_LOCAL (n);
8811                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8812                         *sp++ = ins;
8813                         ip += 2;
8814                         break;
8815                 case CEE_LDLOCA_S: {
8816                         unsigned char *tmp_ip;
8817                         CHECK_OPSIZE (2);
8818                         CHECK_STACK_OVF (1);
8819                         CHECK_LOCAL (ip [1]);
8820
8821                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8822                                 ip = tmp_ip;
8823                                 inline_costs += 1;
8824                                 break;
8825                         }
8826
8827                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8828                         *sp++ = ins;
8829                         ip += 2;
8830                         break;
8831                 }
8832                 case CEE_STLOC_S:
8833                         CHECK_OPSIZE (2);
8834                         CHECK_STACK (1);
8835                         --sp;
8836                         CHECK_LOCAL (ip [1]);
8837                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8838                                 UNVERIFIED;
8839                         emit_stloc_ir (cfg, sp, header, ip [1]);
8840                         ip += 2;
8841                         inline_costs += 1;
8842                         break;
8843                 case CEE_LDNULL:
8844                         CHECK_STACK_OVF (1);
8845                         EMIT_NEW_PCONST (cfg, ins, NULL);
8846                         ins->type = STACK_OBJ;
8847                         ++ip;
8848                         *sp++ = ins;
8849                         break;
8850                 case CEE_LDC_I4_M1:
8851                         CHECK_STACK_OVF (1);
8852                         EMIT_NEW_ICONST (cfg, ins, -1);
8853                         ++ip;
8854                         *sp++ = ins;
8855                         break;
8856                 case CEE_LDC_I4_0:
8857                 case CEE_LDC_I4_1:
8858                 case CEE_LDC_I4_2:
8859                 case CEE_LDC_I4_3:
8860                 case CEE_LDC_I4_4:
8861                 case CEE_LDC_I4_5:
8862                 case CEE_LDC_I4_6:
8863                 case CEE_LDC_I4_7:
8864                 case CEE_LDC_I4_8:
8865                         CHECK_STACK_OVF (1);
8866                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8867                         ++ip;
8868                         *sp++ = ins;
8869                         break;
8870                 case CEE_LDC_I4_S:
8871                         CHECK_OPSIZE (2);
8872                         CHECK_STACK_OVF (1);
8873                         ++ip;
8874                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8875                         ++ip;
8876                         *sp++ = ins;
8877                         break;
8878                 case CEE_LDC_I4:
8879                         CHECK_OPSIZE (5);
8880                         CHECK_STACK_OVF (1);
8881                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8882                         ip += 5;
8883                         *sp++ = ins;
8884                         break;
8885                 case CEE_LDC_I8:
8886                         CHECK_OPSIZE (9);
8887                         CHECK_STACK_OVF (1);
8888                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8889                         ins->type = STACK_I8;
8890                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8891                         ++ip;
8892                         ins->inst_l = (gint64)read64 (ip);
8893                         MONO_ADD_INS (cfg->cbb, ins);
8894                         ip += 8;
8895                         *sp++ = ins;
8896                         break;
8897                 case CEE_LDC_R4: {
8898                         float *f;
8899                         gboolean use_aotconst = FALSE;
8900
8901 #ifdef TARGET_POWERPC
8902                         /* FIXME: Clean this up */
8903                         if (cfg->compile_aot)
8904                                 use_aotconst = TRUE;
8905 #endif
8906
8907                         /* FIXME: we should really allocate this only late in the compilation process */
8908                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8909                         CHECK_OPSIZE (5);
8910                         CHECK_STACK_OVF (1);
8911
8912                         if (use_aotconst) {
8913                                 MonoInst *cons;
8914                                 int dreg;
8915
8916                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8917
8918                                 dreg = alloc_freg (cfg);
8919                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8920                                 ins->type = cfg->r4_stack_type;
8921                         } else {
8922                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8923                                 ins->type = cfg->r4_stack_type;
8924                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8925                                 ins->inst_p0 = f;
8926                                 MONO_ADD_INS (cfg->cbb, ins);
8927                         }
8928                         ++ip;
8929                         readr4 (ip, f);
8930                         ip += 4;
8931                         *sp++ = ins;
8932                         break;
8933                 }
8934                 case CEE_LDC_R8: {
8935                         double *d;
8936                         gboolean use_aotconst = FALSE;
8937
8938 #ifdef TARGET_POWERPC
8939                         /* FIXME: Clean this up */
8940                         if (cfg->compile_aot)
8941                                 use_aotconst = TRUE;
8942 #endif
8943
8944                         /* FIXME: we should really allocate this only late in the compilation process */
8945                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8946                         CHECK_OPSIZE (9);
8947                         CHECK_STACK_OVF (1);
8948
8949                         if (use_aotconst) {
8950                                 MonoInst *cons;
8951                                 int dreg;
8952
8953                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8954
8955                                 dreg = alloc_freg (cfg);
8956                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8957                                 ins->type = STACK_R8;
8958                         } else {
8959                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8960                                 ins->type = STACK_R8;
8961                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8962                                 ins->inst_p0 = d;
8963                                 MONO_ADD_INS (cfg->cbb, ins);
8964                         }
8965                         ++ip;
8966                         readr8 (ip, d);
8967                         ip += 8;
8968                         *sp++ = ins;
8969                         break;
8970                 }
8971                 case CEE_DUP: {
8972                         MonoInst *temp, *store;
8973                         CHECK_STACK (1);
8974                         CHECK_STACK_OVF (1);
8975                         sp--;
8976                         ins = *sp;
8977
8978                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8979                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8980
8981                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8982                         *sp++ = ins;
8983
8984                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8985                         *sp++ = ins;
8986
8987                         ++ip;
8988                         inline_costs += 2;
8989                         break;
8990                 }
8991                 case CEE_POP:
8992                         CHECK_STACK (1);
8993                         ip++;
8994                         --sp;
8995
8996 #ifdef TARGET_X86
8997                         if (sp [0]->type == STACK_R8)
8998                                 /* we need to pop the value from the x86 FP stack */
8999                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
9000 #endif
9001                         break;
9002                 case CEE_JMP: {
9003                         MonoCallInst *call;
9004                         MonoMethodSignature *fsig;
9005                         int i, n;
9006
9007                         INLINE_FAILURE ("jmp");
9008                         GSHAREDVT_FAILURE (*ip);
9009
9010                         CHECK_OPSIZE (5);
9011                         if (stack_start != sp)
9012                                 UNVERIFIED;
9013                         token = read32 (ip + 1);
9014                         /* FIXME: check the signature matches */
9015                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9016                         CHECK_CFG_ERROR;
9017
9018                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9019                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9020
9021                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9022
9023                         fsig = mono_method_signature (cmethod);
9024                         n = fsig->param_count + fsig->hasthis;
9025                         if (cfg->llvm_only) {
9026                                 MonoInst **args;
9027
9028                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9029                                 for (i = 0; i < n; ++i)
9030                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9031                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9032                                 /*
9033                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9034                                  * have to emit a normal return since llvm expects it.
9035                                  */
9036                                 if (cfg->ret)
9037                                         emit_setret (cfg, ins);
9038                                 MONO_INST_NEW (cfg, ins, OP_BR);
9039                                 ins->inst_target_bb = end_bblock;
9040                                 MONO_ADD_INS (cfg->cbb, ins);
9041                                 link_bblock (cfg, cfg->cbb, end_bblock);
9042                                 ip += 5;
9043                                 break;
9044                         } else if (cfg->backend->have_op_tail_call) {
9045                                 /* Handle tail calls similarly to calls */
9046                                 DISABLE_AOT (cfg);
9047
9048                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9049                                 call->method = cmethod;
9050                                 call->tail_call = TRUE;
9051                                 call->signature = mono_method_signature (cmethod);
9052                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9053                                 call->inst.inst_p0 = cmethod;
9054                                 for (i = 0; i < n; ++i)
9055                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9056
9057                                 mono_arch_emit_call (cfg, call);
9058                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9059                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9060                         } else {
9061                                 for (i = 0; i < num_args; ++i)
9062                                         /* Prevent arguments from being optimized away */
9063                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9064
9065                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9066                                 ins = (MonoInst*)call;
9067                                 ins->inst_p0 = cmethod;
9068                                 MONO_ADD_INS (cfg->cbb, ins);
9069                         }
9070
9071                         ip += 5;
9072                         start_new_bblock = 1;
9073                         break;
9074                 }
9075                 case CEE_CALLI: {
9076                         MonoInst *addr;
9077                         MonoMethodSignature *fsig;
9078
9079                         CHECK_OPSIZE (5);
9080                         token = read32 (ip + 1);
9081
9082                         ins = NULL;
9083
9084                         //GSHAREDVT_FAILURE (*ip);
9085                         cmethod = NULL;
9086                         CHECK_STACK (1);
9087                         --sp;
9088                         addr = *sp;
9089                         fsig = mini_get_signature (method, token, generic_context);
9090
9091                         if (method->dynamic && fsig->pinvoke) {
9092                                 MonoInst *args [3];
9093
9094                                 /*
9095                                  * This is a call through a function pointer using a pinvoke
9096                                  * signature. Have to create a wrapper and call that instead.
9097                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9098                                  * instead based on the signature.
9099                                  */
9100                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9101                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9102                                 args [2] = addr;
9103                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9104                         }
9105
9106                         n = fsig->param_count + fsig->hasthis;
9107
9108                         CHECK_STACK (n);
9109
9110                         //g_assert (!virtual_ || fsig->hasthis);
9111
9112                         sp -= n;
9113
9114                         inline_costs += 10 * num_calls++;
9115
9116                         /*
9117                          * Making generic calls out of gsharedvt methods.
9118                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9119                          * patching gshared method addresses into a gsharedvt method.
9120                          */
9121                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9122                                 /*
9123                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9124                                  */
9125                                 MonoInst *callee = addr;
9126
9127                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9128                                         /* Not tested */
9129                                         GSHAREDVT_FAILURE (*ip);
9130
9131                                 if (cfg->llvm_only)
9132                                         // FIXME:
9133                                         GSHAREDVT_FAILURE (*ip);
9134
9135                                 addr = emit_get_rgctx_sig (cfg, context_used,
9136                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9137                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9138                                 goto calli_end;
9139                         }
9140
9141                         /* Prevent inlining of methods with indirect calls */
9142                         INLINE_FAILURE ("indirect call");
9143
9144                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9145                                 MonoJumpInfoType info_type;
9146                                 gpointer info_data;
9147
9148                                 /*
9149                                  * Instead of emitting an indirect call, emit a direct call
9150                                  * with the contents of the aotconst as the patch info.
9151                                  */
9152                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9153                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9154                                         info_data = addr->inst_p0;
9155                                 } else {
9156                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9157                                         info_data = addr->inst_right->inst_left;
9158                                 }
9159
9160                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9161                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9162                                         NULLIFY_INS (addr);
9163                                         goto calli_end;
9164                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9165                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9166                                         NULLIFY_INS (addr);
9167                                         goto calli_end;
9168                                 }
9169                         }
9170                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9171
9172                         calli_end:
9173
9174                         /* End of call, INS should contain the result of the call, if any */
9175
9176                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9177                                 g_assert (ins);
9178                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9179                         }
9180
9181                         CHECK_CFG_EXCEPTION;
9182
9183                         ip += 5;
9184                         ins_flag = 0;
9185                         constrained_class = NULL;
9186                         break;
9187                 }
9188                 case CEE_CALL:
9189                 case CEE_CALLVIRT: {
9190                         MonoInst *addr = NULL;
9191                         MonoMethodSignature *fsig = NULL;
9192                         int array_rank = 0;
9193                         int virtual_ = *ip == CEE_CALLVIRT;
9194                         gboolean pass_imt_from_rgctx = FALSE;
9195                         MonoInst *imt_arg = NULL;
9196                         MonoInst *keep_this_alive = NULL;
9197                         gboolean pass_vtable = FALSE;
9198                         gboolean pass_mrgctx = FALSE;
9199                         MonoInst *vtable_arg = NULL;
9200                         gboolean check_this = FALSE;
9201                         gboolean supported_tail_call = FALSE;
9202                         gboolean tail_call = FALSE;
9203                         gboolean need_seq_point = FALSE;
9204                         guint32 call_opcode = *ip;
9205                         gboolean emit_widen = TRUE;
9206                         gboolean push_res = TRUE;
9207                         gboolean skip_ret = FALSE;
9208                         gboolean delegate_invoke = FALSE;
9209                         gboolean direct_icall = FALSE;
9210                         gboolean constrained_partial_call = FALSE;
9211                         MonoMethod *cil_method;
9212
9213                         CHECK_OPSIZE (5);
9214                         token = read32 (ip + 1);
9215
9216                         ins = NULL;
9217
9218                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9219                         CHECK_CFG_ERROR;
9220
9221                         cil_method = cmethod;
9222
9223                         if (constrained_class) {
9224                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9225                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9226                                                 g_assert (!cmethod->klass->valuetype);
9227                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9228                                                         constrained_partial_call = TRUE;
9229                                         }
9230                                 }
9231
9232                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9233                                         if (cfg->verbose_level > 2)
9234                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9235                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9236                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9237                                                   cfg->gshared)) {
9238                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9239                                                 CHECK_CFG_ERROR;
9240                                         }
9241                                 } else {
9242                                         if (cfg->verbose_level > 2)
9243                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9244
9245                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9246                                                 /*
9247                                                  * This is needed since get_method_constrained can't find
9248                                                  * the method in klass representing a type var.
9249                                                  * The type var is guaranteed to be a reference type in this
9250                                                  * case.
9251                                                  */
9252                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9253                                                         g_assert (!cmethod->klass->valuetype);
9254                                         } else {
9255                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9256                                                 CHECK_CFG_ERROR;
9257                                         }
9258                                 }
9259                         }
9260
9261                         if (!dont_verify && !cfg->skip_visibility) {
9262                                 MonoMethod *target_method = cil_method;
9263                                 if (method->is_inflated) {
9264                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9265                                         CHECK_CFG_ERROR;
9266                                 }
9267                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9268                                         !mono_method_can_access_method (method, cil_method))
9269                                         METHOD_ACCESS_FAILURE (method, cil_method);
9270                         }
9271
9272                         if (mono_security_core_clr_enabled ())
9273                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9274
9275                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9276                                 /* MS.NET seems to silently convert this to a callvirt */
9277                                 virtual_ = 1;
9278
9279                         {
9280                                 /*
9281                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9282                                  * converts to a callvirt.
9283                                  *
9284                                  * tests/bug-515884.il is an example of this behavior
9285                                  */
9286                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9287                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9288                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9289                                         virtual_ = 1;
9290                         }
9291
9292                         if (!cmethod->klass->inited)
9293                                 if (!mono_class_init (cmethod->klass))
9294                                         TYPE_LOAD_ERROR (cmethod->klass);
9295
9296                         fsig = mono_method_signature (cmethod);
9297                         if (!fsig)
9298                                 LOAD_ERROR;
9299                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9300                                 mini_class_is_system_array (cmethod->klass)) {
9301                                 array_rank = cmethod->klass->rank;
9302                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9303                                 direct_icall = TRUE;
9304                         } else if (fsig->pinvoke) {
9305                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9306                                 fsig = mono_method_signature (wrapper);
9307                         } else if (constrained_class) {
9308                         } else {
9309                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9310                                 CHECK_CFG_ERROR;
9311                         }
9312
9313                         if (cfg->llvm_only && !cfg->method->wrapper_type)
9314                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9315
9316                         /* See code below */
9317                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9318                                 MonoBasicBlock *tbb;
9319
9320                                 GET_BBLOCK (cfg, tbb, ip + 5);
9321                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9322                                         /*
9323                                          * We want to extend the try block to cover the call, but we can't do it if the
9324                                          * call is made directly since its followed by an exception check.
9325                                          */
9326                                         direct_icall = FALSE;
9327                                 }
9328                         }
9329
9330                         mono_save_token_info (cfg, image, token, cil_method);
9331
9332                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9333                                 need_seq_point = TRUE;
9334
9335                         /* Don't support calls made using type arguments for now */
9336                         /*
9337                           if (cfg->gsharedvt) {
9338                           if (mini_is_gsharedvt_signature (fsig))
9339                           GSHAREDVT_FAILURE (*ip);
9340                           }
9341                         */
9342
9343                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9344                                 g_assert_not_reached ();
9345
9346                         n = fsig->param_count + fsig->hasthis;
9347
9348                         if (!cfg->gshared && cmethod->klass->generic_container)
9349                                 UNVERIFIED;
9350
9351                         if (!cfg->gshared)
9352                                 g_assert (!mono_method_check_context_used (cmethod));
9353
9354                         CHECK_STACK (n);
9355
9356                         //g_assert (!virtual_ || fsig->hasthis);
9357
9358                         sp -= n;
9359
9360                         /*
9361                          * We have the `constrained.' prefix opcode.
9362                          */
9363                         if (constrained_class) {
9364                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9365                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9366                                                 /* The 'Own method' case below */
9367                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9368                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9369                                         } else {
9370                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9371                                                 CHECK_CFG_EXCEPTION;
9372                                                 g_assert (ins);
9373                                                 goto call_end;
9374                                         }
9375                                 }
9376
9377                                 if (constrained_partial_call) {
9378                                         gboolean need_box = TRUE;
9379
9380                                         /*
9381                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9382                                          * called method is not known at compile time either. The called method could end up being
9383                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9384                                          * to box the receiver.
9385                                          * A simple solution would be to box always and make a normal virtual call, but that would
9386                                          * be bad performance wise.
9387                                          */
9388                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9389                                                 /*
9390                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9391                                                  */
9392                                                 need_box = FALSE;
9393                                         }
9394
9395                                         if (!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9396                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9397                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9398                                                 ins->klass = constrained_class;
9399                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9400                                                 CHECK_CFG_EXCEPTION;
9401                                         } else if (need_box) {
9402                                                 MonoInst *box_type;
9403                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9404                                                 MonoInst *nonbox_call;
9405
9406                                                 /*
9407                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9408                                                  * if needed.
9409                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9410                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9411                                                  */
9412                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9413
9414                                                 NEW_BBLOCK (cfg, is_ref_bb);
9415                                                 NEW_BBLOCK (cfg, end_bb);
9416
9417                                                 box_type = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE);
9418                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9419                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9420
9421                                                 /* Non-ref case */
9422                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9423
9424                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9425
9426                                                 /* Ref case */
9427                                                 MONO_START_BB (cfg, is_ref_bb);
9428                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9429                                                 ins->klass = constrained_class;
9430                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9431                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9432
9433                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9434
9435                                                 MONO_START_BB (cfg, end_bb);
9436                                                 cfg->cbb = end_bb;
9437
9438                                                 nonbox_call->dreg = ins->dreg;
9439                                                 goto call_end;
9440                                         } else {
9441                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9442                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9443                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9444                                                 goto call_end;
9445                                         }
9446                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9447                                         /*
9448                                          * The type parameter is instantiated as a valuetype,
9449                                          * but that type doesn't override the method we're
9450                                          * calling, so we need to box `this'.
9451                                          */
9452                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9453                                         ins->klass = constrained_class;
9454                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9455                                         CHECK_CFG_EXCEPTION;
9456                                 } else if (!constrained_class->valuetype) {
9457                                         int dreg = alloc_ireg_ref (cfg);
9458
9459                                         /*
9460                                          * The type parameter is instantiated as a reference
9461                                          * type.  We have a managed pointer on the stack, so
9462                                          * we need to dereference it here.
9463                                          */
9464                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9465                                         ins->type = STACK_OBJ;
9466                                         sp [0] = ins;
9467                                 } else {
9468                                         if (cmethod->klass->valuetype) {
9469                                                 /* Own method */
9470                                         } else {
9471                                                 /* Interface method */
9472                                                 int ioffset, slot;
9473
9474                                                 mono_class_setup_vtable (constrained_class);
9475                                                 CHECK_TYPELOAD (constrained_class);
9476                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9477                                                 if (ioffset == -1)
9478                                                         TYPE_LOAD_ERROR (constrained_class);
9479                                                 slot = mono_method_get_vtable_slot (cmethod);
9480                                                 if (slot == -1)
9481                                                         TYPE_LOAD_ERROR (cmethod->klass);
9482                                                 cmethod = constrained_class->vtable [ioffset + slot];
9483
9484                                                 if (cmethod->klass == mono_defaults.enum_class) {
9485                                                         /* Enum implements some interfaces, so treat this as the first case */
9486                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9487                                                         ins->klass = constrained_class;
9488                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9489                                                         CHECK_CFG_EXCEPTION;
9490                                                 }
9491                                         }
9492                                         virtual_ = 0;
9493                                 }
9494                                 constrained_class = NULL;
9495                         }
9496
9497                         if (check_call_signature (cfg, fsig, sp))
9498                                 UNVERIFIED;
9499
9500                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9501                                 delegate_invoke = TRUE;
9502
9503                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9504                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9505                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9506                                         emit_widen = FALSE;
9507                                 }
9508
9509                                 goto call_end;
9510                         }
9511
9512                         /*
9513                          * If the callee is a shared method, then its static cctor
9514                          * might not get called after the call was patched.
9515                          */
9516                         if (cfg->gshared && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9517                                 emit_class_init (cfg, cmethod->klass);
9518                                 CHECK_TYPELOAD (cmethod->klass);
9519                         }
9520
9521                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9522
9523                         if (cfg->gshared) {
9524                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9525
9526                                 context_used = mini_method_check_context_used (cfg, cmethod);
9527
9528                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9529                                         /* Generic method interface
9530                                            calls are resolved via a
9531                                            helper function and don't
9532                                            need an imt. */
9533                                         if (!cmethod_context || !cmethod_context->method_inst)
9534                                                 pass_imt_from_rgctx = TRUE;
9535                                 }
9536
9537                                 /*
9538                                  * If a shared method calls another
9539                                  * shared method then the caller must
9540                                  * have a generic sharing context
9541                                  * because the magic trampoline
9542                                  * requires it.  FIXME: We shouldn't
9543                                  * have to force the vtable/mrgctx
9544                                  * variable here.  Instead there
9545                                  * should be a flag in the cfg to
9546                                  * request a generic sharing context.
9547                                  */
9548                                 if (context_used &&
9549                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9550                                         mono_get_vtable_var (cfg);
9551                         }
9552
9553                         if (pass_vtable) {
9554                                 if (context_used) {
9555                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9556                                 } else {
9557                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9558
9559                                         CHECK_TYPELOAD (cmethod->klass);
9560                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9561                                 }
9562                         }
9563
9564                         if (pass_mrgctx) {
9565                                 g_assert (!vtable_arg);
9566
9567                                 if (!cfg->compile_aot) {
9568                                         /*
9569                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9570                                          * for type load errors before.
9571                                          */
9572                                         mono_class_setup_vtable (cmethod->klass);
9573                                         CHECK_TYPELOAD (cmethod->klass);
9574                                 }
9575
9576                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9577
9578                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9579                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9580                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9581                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9582                                         if (virtual_)
9583                                                 check_this = TRUE;
9584                                         virtual_ = 0;
9585                                 }
9586                         }
9587
9588                         if (pass_imt_from_rgctx) {
9589                                 g_assert (!pass_vtable);
9590
9591                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9592                                         cmethod, MONO_RGCTX_INFO_METHOD);
9593                         }
9594
9595                         if (check_this)
9596                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9597
9598                         /* Calling virtual generic methods */
9599                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9600                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9601                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9602                             fsig->generic_param_count &&
9603                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9604                                 !cfg->llvm_only) {
9605                                 MonoInst *this_temp, *this_arg_temp, *store;
9606                                 MonoInst *iargs [4];
9607
9608                                 g_assert (fsig->is_inflated);
9609
9610                                 /* Prevent inlining of methods that contain indirect calls */
9611                                 INLINE_FAILURE ("virtual generic call");
9612
9613                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9614                                         GSHAREDVT_FAILURE (*ip);
9615
9616                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9617                                         g_assert (!imt_arg);
9618                                         if (!context_used)
9619                                                 g_assert (cmethod->is_inflated);
9620                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9621                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9622                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9623                                 } else {
9624                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9625                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9626                                         MONO_ADD_INS (cfg->cbb, store);
9627
9628                                         /* FIXME: This should be a managed pointer */
9629                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9630
9631                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9632                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9633                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9634                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9635                                         addr = mono_emit_jit_icall (cfg,
9636                                                                                                 mono_helper_compile_generic_method, iargs);
9637
9638                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9639
9640                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9641                                 }
9642
9643                                 goto call_end;
9644                         }
9645
9646                         /*
9647                          * Implement a workaround for the inherent races involved in locking:
9648                          * Monitor.Enter ()
9649                          * try {
9650                          * } finally {
9651                          *    Monitor.Exit ()
9652                          * }
9653                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9654                          * try block, the Exit () won't be executed, see:
9655                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9656                          * To work around this, we extend such try blocks to include the last x bytes
9657                          * of the Monitor.Enter () call.
9658                          */
9659                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9660                                 MonoBasicBlock *tbb;
9661
9662                                 GET_BBLOCK (cfg, tbb, ip + 5);
9663                                 /*
9664                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9665                                  * from Monitor.Enter like ArgumentNullException.
9666                                  */
9667                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9668                                         /* Mark this bblock as needing to be extended */
9669                                         tbb->extend_try_block = TRUE;
9670                                 }
9671                         }
9672
9673                         /* Conversion to a JIT intrinsic */
9674                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9675                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9676                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9677                                         emit_widen = FALSE;
9678                                 }
9679                                 goto call_end;
9680                         }
9681
9682                         /* Inlining */
9683                         if ((cfg->opt & MONO_OPT_INLINE) &&
9684                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9685                             mono_method_check_inlining (cfg, cmethod)) {
9686                                 int costs;
9687                                 gboolean always = FALSE;
9688
9689                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9690                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9691                                         /* Prevent inlining of methods that call wrappers */
9692                                         INLINE_FAILURE ("wrapper call");
9693                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9694                                         always = TRUE;
9695                                 }
9696
9697                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9698                                 if (costs) {
9699                                         cfg->real_offset += 5;
9700
9701                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9702                                                 /* *sp is already set by inline_method */
9703                                                 sp++;
9704                                                 push_res = FALSE;
9705                                         }
9706
9707                                         inline_costs += costs;
9708
9709                                         goto call_end;
9710                                 }
9711                         }
9712
9713                         /* Tail recursion elimination */
9714                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9715                                 gboolean has_vtargs = FALSE;
9716                                 int i;
9717
9718                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9719                                 INLINE_FAILURE ("tail call");
9720
9721                                 /* keep it simple */
9722                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9723                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9724                                                 has_vtargs = TRUE;
9725                                 }
9726
9727                                 if (!has_vtargs) {
9728                                         for (i = 0; i < n; ++i)
9729                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9730                                         MONO_INST_NEW (cfg, ins, OP_BR);
9731                                         MONO_ADD_INS (cfg->cbb, ins);
9732                                         tblock = start_bblock->out_bb [0];
9733                                         link_bblock (cfg, cfg->cbb, tblock);
9734                                         ins->inst_target_bb = tblock;
9735                                         start_new_bblock = 1;
9736
9737                                         /* skip the CEE_RET, too */
9738                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9739                                                 skip_ret = TRUE;
9740                                         push_res = FALSE;
9741                                         goto call_end;
9742                                 }
9743                         }
9744
9745                         inline_costs += 10 * num_calls++;
9746
9747                         /*
9748                          * Making generic calls out of gsharedvt methods.
9749                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9750                          * patching gshared method addresses into a gsharedvt method.
9751                          */
9752                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9753                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9754                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9755                                 MonoRgctxInfoType info_type;
9756
9757                                 if (virtual_) {
9758                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9759                                                 //GSHAREDVT_FAILURE (*ip);
9760                                         // disable for possible remoting calls
9761                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9762                                                 GSHAREDVT_FAILURE (*ip);
9763                                         if (fsig->generic_param_count) {
9764                                                 /* virtual generic call */
9765                                                 g_assert (!imt_arg);
9766                                                 /* Same as the virtual generic case above */
9767                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9768                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9769                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9770                                                 vtable_arg = NULL;
9771                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9772                                                 /* This can happen when we call a fully instantiated iface method */
9773                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9774                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9775                                                 vtable_arg = NULL;
9776                                         }
9777                                 }
9778
9779                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9780                                         keep_this_alive = sp [0];
9781
9782                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9783                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9784                                 else
9785                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9786                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9787
9788                                 if (cfg->llvm_only) {
9789                                         // FIXME: Avoid initializing vtable_arg
9790                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9791                                 } else {
9792                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9793                                 }
9794                                 goto call_end;
9795                         }
9796
9797                         /* Generic sharing */
9798
9799                         /*
9800                          * Use this if the callee is gsharedvt sharable too, since
9801                          * at runtime we might find an instantiation so the call cannot
9802                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9803                          */
9804                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9805                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9806                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9807                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9808                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9809                                 INLINE_FAILURE ("gshared");
9810
9811                                 g_assert (cfg->gshared && cmethod);
9812                                 g_assert (!addr);
9813
9814                                 /*
9815                                  * We are compiling a call to a
9816                                  * generic method from shared code,
9817                                  * which means that we have to look up
9818                                  * the method in the rgctx and do an
9819                                  * indirect call.
9820                                  */
9821                                 if (fsig->hasthis)
9822                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9823
9824                                 if (cfg->llvm_only) {
9825                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9826                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9827                                         else
9828                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9829                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9830                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9831                                 } else {
9832                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9833                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9834                                 }
9835                                 goto call_end;
9836                         }
9837
9838                         /* Direct calls to icalls */
9839                         if (direct_icall) {
9840                                 MonoMethod *wrapper;
9841                                 int costs;
9842
9843                                 /* Inline the wrapper */
9844                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9845
9846                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9847                                 g_assert (costs > 0);
9848                                 cfg->real_offset += 5;
9849
9850                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9851                                         /* *sp is already set by inline_method */
9852                                         sp++;
9853                                         push_res = FALSE;
9854                                 }
9855
9856                                 inline_costs += costs;
9857
9858                                 goto call_end;
9859                         }
9860
9861                         /* Array methods */
9862                         if (array_rank) {
9863                                 MonoInst *addr;
9864
9865                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9866                                         MonoInst *val = sp [fsig->param_count];
9867
9868                                         if (val->type == STACK_OBJ) {
9869                                                 MonoInst *iargs [2];
9870
9871                                                 iargs [0] = sp [0];
9872                                                 iargs [1] = val;
9873
9874                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9875                                         }
9876
9877                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9878                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9879                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9880                                                 emit_write_barrier (cfg, addr, val);
9881                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9882                                                 GSHAREDVT_FAILURE (*ip);
9883                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9884                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9885
9886                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9887                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9888                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9889                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9890                                         CHECK_TYPELOAD (cmethod->klass);
9891
9892                                         readonly = FALSE;
9893                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9894                                         ins = addr;
9895                                 } else {
9896                                         g_assert_not_reached ();
9897                                 }
9898
9899                                 emit_widen = FALSE;
9900                                 goto call_end;
9901                         }
9902
9903                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9904                         if (ins)
9905                                 goto call_end;
9906
9907                         /* Tail prefix / tail call optimization */
9908
9909                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9910                         /* FIXME: runtime generic context pointer for jumps? */
9911                         /* FIXME: handle this for generic sharing eventually */
9912                         if ((ins_flag & MONO_INST_TAILCALL) &&
9913                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9914                                 supported_tail_call = TRUE;
9915
9916                         if (supported_tail_call) {
9917                                 MonoCallInst *call;
9918
9919                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9920                                 INLINE_FAILURE ("tail call");
9921
9922                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9923
9924                                 if (cfg->backend->have_op_tail_call) {
9925                                         /* Handle tail calls similarly to normal calls */
9926                                         tail_call = TRUE;
9927                                 } else {
9928                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9929
9930                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9931                                         call->tail_call = TRUE;
9932                                         call->method = cmethod;
9933                                         call->signature = mono_method_signature (cmethod);
9934
9935                                         /*
9936                                          * We implement tail calls by storing the actual arguments into the
9937                                          * argument variables, then emitting a CEE_JMP.
9938                                          */
9939                                         for (i = 0; i < n; ++i) {
9940                                                 /* Prevent argument from being register allocated */
9941                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9942                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9943                                         }
9944                                         ins = (MonoInst*)call;
9945                                         ins->inst_p0 = cmethod;
9946                                         ins->inst_p1 = arg_array [0];
9947                                         MONO_ADD_INS (cfg->cbb, ins);
9948                                         link_bblock (cfg, cfg->cbb, end_bblock);
9949                                         start_new_bblock = 1;
9950
9951                                         // FIXME: Eliminate unreachable epilogs
9952
9953                                         /*
9954                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9955                                          * only reachable from this call.
9956                                          */
9957                                         GET_BBLOCK (cfg, tblock, ip + 5);
9958                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9959                                                 skip_ret = TRUE;
9960                                         push_res = FALSE;
9961
9962                                         goto call_end;
9963                                 }
9964                         }
9965
9966                         /*
9967                          * Synchronized wrappers.
9968                          * Its hard to determine where to replace a method with its synchronized
9969                          * wrapper without causing an infinite recursion. The current solution is
9970                          * to add the synchronized wrapper in the trampolines, and to
9971                          * change the called method to a dummy wrapper, and resolve that wrapper
9972                          * to the real method in mono_jit_compile_method ().
9973                          */
9974                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9975                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9976                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9977                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9978                         }
9979
9980                         /*
9981                          * Virtual calls in llvm-only mode.
9982                          */
9983                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9984                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9985                                 goto call_end;
9986                         }
9987
9988                         /* Common call */
9989                         INLINE_FAILURE ("call");
9990                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9991                                                                                           imt_arg, vtable_arg);
9992
9993                         if (tail_call && !cfg->llvm_only) {
9994                                 link_bblock (cfg, cfg->cbb, end_bblock);
9995                                 start_new_bblock = 1;
9996
9997                                 // FIXME: Eliminate unreachable epilogs
9998
9999                                 /*
10000                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10001                                  * only reachable from this call.
10002                                  */
10003                                 GET_BBLOCK (cfg, tblock, ip + 5);
10004                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10005                                         skip_ret = TRUE;
10006                                 push_res = FALSE;
10007                         }
10008
10009                         call_end:
10010
10011                         /* End of call, INS should contain the result of the call, if any */
10012
10013                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10014                                 g_assert (ins);
10015                                 if (emit_widen)
10016                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10017                                 else
10018                                         *sp++ = ins;
10019                         }
10020
10021                         if (keep_this_alive) {
10022                                 MonoInst *dummy_use;
10023
10024                                 /* See mono_emit_method_call_full () */
10025                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10026                         }
10027
10028                         CHECK_CFG_EXCEPTION;
10029
10030                         ip += 5;
10031                         if (skip_ret) {
10032                                 g_assert (*ip == CEE_RET);
10033                                 ip += 1;
10034                         }
10035                         ins_flag = 0;
10036                         constrained_class = NULL;
10037                         if (need_seq_point)
10038                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10039                         break;
10040                 }
10041                 case CEE_RET:
10042                         if (cfg->method != method) {
10043                                 /* return from inlined method */
10044                                 /*
10045                                  * If in_count == 0, that means the ret is unreachable due to
10046                                  * being preceeded by a throw. In that case, inline_method () will
10047                                  * handle setting the return value
10048                                  * (test case: test_0_inline_throw ()).
10049                                  */
10050                                 if (return_var && cfg->cbb->in_count) {
10051                                         MonoType *ret_type = mono_method_signature (method)->ret;
10052
10053                                         MonoInst *store;
10054                                         CHECK_STACK (1);
10055                                         --sp;
10056
10057                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10058                                                 UNVERIFIED;
10059
10060                                         //g_assert (returnvar != -1);
10061                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10062                                         cfg->ret_var_set = TRUE;
10063                                 }
10064                         } else {
10065                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10066
10067                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10068                                         emit_pop_lmf (cfg);
10069
10070                                 if (cfg->ret) {
10071                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10072
10073                                         if (seq_points && !sym_seq_points) {
10074                                                 /*
10075                                                  * Place a seq point here too even through the IL stack is not
10076                                                  * empty, so a step over on
10077                                                  * call <FOO>
10078                                                  * ret
10079                                                  * will work correctly.
10080                                                  */
10081                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10082                                                 MONO_ADD_INS (cfg->cbb, ins);
10083                                         }
10084
10085                                         g_assert (!return_var);
10086                                         CHECK_STACK (1);
10087                                         --sp;
10088
10089                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10090                                                 UNVERIFIED;
10091
10092                                         emit_setret (cfg, *sp);
10093                                 }
10094                         }
10095                         if (sp != stack_start)
10096                                 UNVERIFIED;
10097                         MONO_INST_NEW (cfg, ins, OP_BR);
10098                         ip++;
10099                         ins->inst_target_bb = end_bblock;
10100                         MONO_ADD_INS (cfg->cbb, ins);
10101                         link_bblock (cfg, cfg->cbb, end_bblock);
10102                         start_new_bblock = 1;
10103                         break;
10104                 case CEE_BR_S:
10105                         CHECK_OPSIZE (2);
10106                         MONO_INST_NEW (cfg, ins, OP_BR);
10107                         ip++;
10108                         target = ip + 1 + (signed char)(*ip);
10109                         ++ip;
10110                         GET_BBLOCK (cfg, tblock, target);
10111                         link_bblock (cfg, cfg->cbb, tblock);
10112                         ins->inst_target_bb = tblock;
10113                         if (sp != stack_start) {
10114                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10115                                 sp = stack_start;
10116                                 CHECK_UNVERIFIABLE (cfg);
10117                         }
10118                         MONO_ADD_INS (cfg->cbb, ins);
10119                         start_new_bblock = 1;
10120                         inline_costs += BRANCH_COST;
10121                         break;
10122                 case CEE_BEQ_S:
10123                 case CEE_BGE_S:
10124                 case CEE_BGT_S:
10125                 case CEE_BLE_S:
10126                 case CEE_BLT_S:
10127                 case CEE_BNE_UN_S:
10128                 case CEE_BGE_UN_S:
10129                 case CEE_BGT_UN_S:
10130                 case CEE_BLE_UN_S:
10131                 case CEE_BLT_UN_S:
10132                         CHECK_OPSIZE (2);
10133                         CHECK_STACK (2);
10134                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10135                         ip++;
10136                         target = ip + 1 + *(signed char*)ip;
10137                         ip++;
10138
10139                         ADD_BINCOND (NULL);
10140
10141                         sp = stack_start;
10142                         inline_costs += BRANCH_COST;
10143                         break;
10144                 case CEE_BR:
10145                         CHECK_OPSIZE (5);
10146                         MONO_INST_NEW (cfg, ins, OP_BR);
10147                         ip++;
10148
10149                         target = ip + 4 + (gint32)read32(ip);
10150                         ip += 4;
10151                         GET_BBLOCK (cfg, tblock, target);
10152                         link_bblock (cfg, cfg->cbb, tblock);
10153                         ins->inst_target_bb = tblock;
10154                         if (sp != stack_start) {
10155                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10156                                 sp = stack_start;
10157                                 CHECK_UNVERIFIABLE (cfg);
10158                         }
10159
10160                         MONO_ADD_INS (cfg->cbb, ins);
10161
10162                         start_new_bblock = 1;
10163                         inline_costs += BRANCH_COST;
10164                         break;
10165                 case CEE_BRFALSE_S:
10166                 case CEE_BRTRUE_S:
10167                 case CEE_BRFALSE:
10168                 case CEE_BRTRUE: {
10169                         MonoInst *cmp;
10170                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10171                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10172                         guint32 opsize = is_short ? 1 : 4;
10173
10174                         CHECK_OPSIZE (opsize);
10175                         CHECK_STACK (1);
10176                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10177                                 UNVERIFIED;
10178                         ip ++;
10179                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10180                         ip += opsize;
10181
10182                         sp--;
10183
10184                         GET_BBLOCK (cfg, tblock, target);
10185                         link_bblock (cfg, cfg->cbb, tblock);
10186                         GET_BBLOCK (cfg, tblock, ip);
10187                         link_bblock (cfg, cfg->cbb, tblock);
10188
10189                         if (sp != stack_start) {
10190                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10191                                 CHECK_UNVERIFIABLE (cfg);
10192                         }
10193
10194                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10195                         cmp->sreg1 = sp [0]->dreg;
10196                         type_from_op (cfg, cmp, sp [0], NULL);
10197                         CHECK_TYPE (cmp);
10198
10199 #if SIZEOF_REGISTER == 4
10200                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10201                                 /* Convert it to OP_LCOMPARE */
10202                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10203                                 ins->type = STACK_I8;
10204                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10205                                 ins->inst_l = 0;
10206                                 MONO_ADD_INS (cfg->cbb, ins);
10207                                 cmp->opcode = OP_LCOMPARE;
10208                                 cmp->sreg2 = ins->dreg;
10209                         }
10210 #endif
10211                         MONO_ADD_INS (cfg->cbb, cmp);
10212
10213                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10214                         type_from_op (cfg, ins, sp [0], NULL);
10215                         MONO_ADD_INS (cfg->cbb, ins);
10216                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10217                         GET_BBLOCK (cfg, tblock, target);
10218                         ins->inst_true_bb = tblock;
10219                         GET_BBLOCK (cfg, tblock, ip);
10220                         ins->inst_false_bb = tblock;
10221                         start_new_bblock = 2;
10222
10223                         sp = stack_start;
10224                         inline_costs += BRANCH_COST;
10225                         break;
10226                 }
10227                 case CEE_BEQ:
10228                 case CEE_BGE:
10229                 case CEE_BGT:
10230                 case CEE_BLE:
10231                 case CEE_BLT:
10232                 case CEE_BNE_UN:
10233                 case CEE_BGE_UN:
10234                 case CEE_BGT_UN:
10235                 case CEE_BLE_UN:
10236                 case CEE_BLT_UN:
10237                         CHECK_OPSIZE (5);
10238                         CHECK_STACK (2);
10239                         MONO_INST_NEW (cfg, ins, *ip);
10240                         ip++;
10241                         target = ip + 4 + (gint32)read32(ip);
10242                         ip += 4;
10243
10244                         ADD_BINCOND (NULL);
10245
10246                         sp = stack_start;
10247                         inline_costs += BRANCH_COST;
10248                         break;
10249                 case CEE_SWITCH: {
10250                         MonoInst *src1;
10251                         MonoBasicBlock **targets;
10252                         MonoBasicBlock *default_bblock;
10253                         MonoJumpInfoBBTable *table;
10254                         int offset_reg = alloc_preg (cfg);
10255                         int target_reg = alloc_preg (cfg);
10256                         int table_reg = alloc_preg (cfg);
10257                         int sum_reg = alloc_preg (cfg);
10258                         gboolean use_op_switch;
10259
10260                         CHECK_OPSIZE (5);
10261                         CHECK_STACK (1);
10262                         n = read32 (ip + 1);
10263                         --sp;
10264                         src1 = sp [0];
10265                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10266                                 UNVERIFIED;
10267
10268                         ip += 5;
10269                         CHECK_OPSIZE (n * sizeof (guint32));
10270                         target = ip + n * sizeof (guint32);
10271
10272                         GET_BBLOCK (cfg, default_bblock, target);
10273                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10274
10275                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10276                         for (i = 0; i < n; ++i) {
10277                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10278                                 targets [i] = tblock;
10279                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10280                                 ip += 4;
10281                         }
10282
10283                         if (sp != stack_start) {
10284                                 /*
10285                                  * Link the current bb with the targets as well, so handle_stack_args
10286                                  * will set their in_stack correctly.
10287                                  */
10288                                 link_bblock (cfg, cfg->cbb, default_bblock);
10289                                 for (i = 0; i < n; ++i)
10290                                         link_bblock (cfg, cfg->cbb, targets [i]);
10291
10292                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10293                                 sp = stack_start;
10294                                 CHECK_UNVERIFIABLE (cfg);
10295
10296                                 /* Undo the links */
10297                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10298                                 for (i = 0; i < n; ++i)
10299                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10300                         }
10301
10302                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10303                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10304
10305                         for (i = 0; i < n; ++i)
10306                                 link_bblock (cfg, cfg->cbb, targets [i]);
10307
10308                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10309                         table->table = targets;
10310                         table->table_size = n;
10311
10312                         use_op_switch = FALSE;
10313 #ifdef TARGET_ARM
10314                         /* ARM implements SWITCH statements differently */
10315                         /* FIXME: Make it use the generic implementation */
10316                         if (!cfg->compile_aot)
10317                                 use_op_switch = TRUE;
10318 #endif
10319
10320                         if (COMPILE_LLVM (cfg))
10321                                 use_op_switch = TRUE;
10322
10323                         cfg->cbb->has_jump_table = 1;
10324
10325                         if (use_op_switch) {
10326                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10327                                 ins->sreg1 = src1->dreg;
10328                                 ins->inst_p0 = table;
10329                                 ins->inst_many_bb = targets;
10330                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10331                                 MONO_ADD_INS (cfg->cbb, ins);
10332                         } else {
10333                                 if (sizeof (gpointer) == 8)
10334                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10335                                 else
10336                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10337
10338 #if SIZEOF_REGISTER == 8
10339                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10340                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10341 #endif
10342
10343                                 if (cfg->compile_aot) {
10344                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10345                                 } else {
10346                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10347                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10348                                         ins->inst_p0 = table;
10349                                         ins->dreg = table_reg;
10350                                         MONO_ADD_INS (cfg->cbb, ins);
10351                                 }
10352
10353                                 /* FIXME: Use load_memindex */
10354                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10355                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10356                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10357                         }
10358                         start_new_bblock = 1;
10359                         inline_costs += (BRANCH_COST * 2);
10360                         break;
10361                 }
10362                 case CEE_LDIND_I1:
10363                 case CEE_LDIND_U1:
10364                 case CEE_LDIND_I2:
10365                 case CEE_LDIND_U2:
10366                 case CEE_LDIND_I4:
10367                 case CEE_LDIND_U4:
10368                 case CEE_LDIND_I8:
10369                 case CEE_LDIND_I:
10370                 case CEE_LDIND_R4:
10371                 case CEE_LDIND_R8:
10372                 case CEE_LDIND_REF:
10373                         CHECK_STACK (1);
10374                         --sp;
10375
10376                         switch (*ip) {
10377                         case CEE_LDIND_R4:
10378                         case CEE_LDIND_R8:
10379                                 dreg = alloc_freg (cfg);
10380                                 break;
10381                         case CEE_LDIND_I8:
10382                                 dreg = alloc_lreg (cfg);
10383                                 break;
10384                         case CEE_LDIND_REF:
10385                                 dreg = alloc_ireg_ref (cfg);
10386                                 break;
10387                         default:
10388                                 dreg = alloc_preg (cfg);
10389                         }
10390
10391                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10392                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10393                         if (*ip == CEE_LDIND_R4)
10394                                 ins->type = cfg->r4_stack_type;
10395                         ins->flags |= ins_flag;
10396                         MONO_ADD_INS (cfg->cbb, ins);
10397                         *sp++ = ins;
10398                         if (ins_flag & MONO_INST_VOLATILE) {
10399                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10400                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10401                         }
10402                         ins_flag = 0;
10403                         ++ip;
10404                         break;
10405                 case CEE_STIND_REF:
10406                 case CEE_STIND_I1:
10407                 case CEE_STIND_I2:
10408                 case CEE_STIND_I4:
10409                 case CEE_STIND_I8:
10410                 case CEE_STIND_R4:
10411                 case CEE_STIND_R8:
10412                 case CEE_STIND_I:
10413                         CHECK_STACK (2);
10414                         sp -= 2;
10415
10416                         if (ins_flag & MONO_INST_VOLATILE) {
10417                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10418                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10419                         }
10420
10421                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10422                         ins->flags |= ins_flag;
10423                         ins_flag = 0;
10424
10425                         MONO_ADD_INS (cfg->cbb, ins);
10426
10427                         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)))
10428                                 emit_write_barrier (cfg, sp [0], sp [1]);
10429
10430                         inline_costs += 1;
10431                         ++ip;
10432                         break;
10433
10434                 case CEE_MUL:
10435                         CHECK_STACK (2);
10436
10437                         MONO_INST_NEW (cfg, ins, (*ip));
10438                         sp -= 2;
10439                         ins->sreg1 = sp [0]->dreg;
10440                         ins->sreg2 = sp [1]->dreg;
10441                         type_from_op (cfg, ins, sp [0], sp [1]);
10442                         CHECK_TYPE (ins);
10443                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10444
10445                         /* Use the immediate opcodes if possible */
10446                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10447                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10448                                 if (imm_opcode != -1) {
10449                                         ins->opcode = imm_opcode;
10450                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10451                                         ins->sreg2 = -1;
10452
10453                                         NULLIFY_INS (sp [1]);
10454                                 }
10455                         }
10456
10457                         MONO_ADD_INS ((cfg)->cbb, (ins));
10458
10459                         *sp++ = mono_decompose_opcode (cfg, ins);
10460                         ip++;
10461                         break;
10462                 case CEE_ADD:
10463                 case CEE_SUB:
10464                 case CEE_DIV:
10465                 case CEE_DIV_UN:
10466                 case CEE_REM:
10467                 case CEE_REM_UN:
10468                 case CEE_AND:
10469                 case CEE_OR:
10470                 case CEE_XOR:
10471                 case CEE_SHL:
10472                 case CEE_SHR:
10473                 case CEE_SHR_UN:
10474                         CHECK_STACK (2);
10475
10476                         MONO_INST_NEW (cfg, ins, (*ip));
10477                         sp -= 2;
10478                         ins->sreg1 = sp [0]->dreg;
10479                         ins->sreg2 = sp [1]->dreg;
10480                         type_from_op (cfg, ins, sp [0], sp [1]);
10481                         CHECK_TYPE (ins);
10482                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10483                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10484
10485                         /* FIXME: Pass opcode to is_inst_imm */
10486
10487                         /* Use the immediate opcodes if possible */
10488                         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)) {
10489                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10490                                 if (imm_opcode != -1) {
10491                                         ins->opcode = imm_opcode;
10492                                         if (sp [1]->opcode == OP_I8CONST) {
10493 #if SIZEOF_REGISTER == 8
10494                                                 ins->inst_imm = sp [1]->inst_l;
10495 #else
10496                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10497                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10498 #endif
10499                                         }
10500                                         else
10501                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10502                                         ins->sreg2 = -1;
10503
10504                                         /* Might be followed by an instruction added by add_widen_op */
10505                                         if (sp [1]->next == NULL)
10506                                                 NULLIFY_INS (sp [1]);
10507                                 }
10508                         }
10509                         MONO_ADD_INS ((cfg)->cbb, (ins));
10510
10511                         *sp++ = mono_decompose_opcode (cfg, ins);
10512                         ip++;
10513                         break;
10514                 case CEE_NEG:
10515                 case CEE_NOT:
10516                 case CEE_CONV_I1:
10517                 case CEE_CONV_I2:
10518                 case CEE_CONV_I4:
10519                 case CEE_CONV_R4:
10520                 case CEE_CONV_R8:
10521                 case CEE_CONV_U4:
10522                 case CEE_CONV_I8:
10523                 case CEE_CONV_U8:
10524                 case CEE_CONV_OVF_I8:
10525                 case CEE_CONV_OVF_U8:
10526                 case CEE_CONV_R_UN:
10527                         CHECK_STACK (1);
10528
10529                         /* Special case this earlier so we have long constants in the IR */
10530                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10531                                 int data = sp [-1]->inst_c0;
10532                                 sp [-1]->opcode = OP_I8CONST;
10533                                 sp [-1]->type = STACK_I8;
10534 #if SIZEOF_REGISTER == 8
10535                                 if ((*ip) == CEE_CONV_U8)
10536                                         sp [-1]->inst_c0 = (guint32)data;
10537                                 else
10538                                         sp [-1]->inst_c0 = data;
10539 #else
10540                                 sp [-1]->inst_ls_word = data;
10541                                 if ((*ip) == CEE_CONV_U8)
10542                                         sp [-1]->inst_ms_word = 0;
10543                                 else
10544                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10545 #endif
10546                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10547                         }
10548                         else {
10549                                 ADD_UNOP (*ip);
10550                         }
10551                         ip++;
10552                         break;
10553                 case CEE_CONV_OVF_I4:
10554                 case CEE_CONV_OVF_I1:
10555                 case CEE_CONV_OVF_I2:
10556                 case CEE_CONV_OVF_I:
10557                 case CEE_CONV_OVF_U:
10558                         CHECK_STACK (1);
10559
10560                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10561                                 ADD_UNOP (CEE_CONV_OVF_I8);
10562                                 ADD_UNOP (*ip);
10563                         } else {
10564                                 ADD_UNOP (*ip);
10565                         }
10566                         ip++;
10567                         break;
10568                 case CEE_CONV_OVF_U1:
10569                 case CEE_CONV_OVF_U2:
10570                 case CEE_CONV_OVF_U4:
10571                         CHECK_STACK (1);
10572
10573                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10574                                 ADD_UNOP (CEE_CONV_OVF_U8);
10575                                 ADD_UNOP (*ip);
10576                         } else {
10577                                 ADD_UNOP (*ip);
10578                         }
10579                         ip++;
10580                         break;
10581                 case CEE_CONV_OVF_I1_UN:
10582                 case CEE_CONV_OVF_I2_UN:
10583                 case CEE_CONV_OVF_I4_UN:
10584                 case CEE_CONV_OVF_I8_UN:
10585                 case CEE_CONV_OVF_U1_UN:
10586                 case CEE_CONV_OVF_U2_UN:
10587                 case CEE_CONV_OVF_U4_UN:
10588                 case CEE_CONV_OVF_U8_UN:
10589                 case CEE_CONV_OVF_I_UN:
10590                 case CEE_CONV_OVF_U_UN:
10591                 case CEE_CONV_U2:
10592                 case CEE_CONV_U1:
10593                 case CEE_CONV_I:
10594                 case CEE_CONV_U:
10595                         CHECK_STACK (1);
10596                         ADD_UNOP (*ip);
10597                         CHECK_CFG_EXCEPTION;
10598                         ip++;
10599                         break;
10600                 case CEE_ADD_OVF:
10601                 case CEE_ADD_OVF_UN:
10602                 case CEE_MUL_OVF:
10603                 case CEE_MUL_OVF_UN:
10604                 case CEE_SUB_OVF:
10605                 case CEE_SUB_OVF_UN:
10606                         CHECK_STACK (2);
10607                         ADD_BINOP (*ip);
10608                         ip++;
10609                         break;
10610                 case CEE_CPOBJ:
10611                         GSHAREDVT_FAILURE (*ip);
10612                         CHECK_OPSIZE (5);
10613                         CHECK_STACK (2);
10614                         token = read32 (ip + 1);
10615                         klass = mini_get_class (method, token, generic_context);
10616                         CHECK_TYPELOAD (klass);
10617                         sp -= 2;
10618                         if (generic_class_is_reference_type (cfg, klass)) {
10619                                 MonoInst *store, *load;
10620                                 int dreg = alloc_ireg_ref (cfg);
10621
10622                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10623                                 load->flags |= ins_flag;
10624                                 MONO_ADD_INS (cfg->cbb, load);
10625
10626                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10627                                 store->flags |= ins_flag;
10628                                 MONO_ADD_INS (cfg->cbb, store);
10629
10630                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10631                                         emit_write_barrier (cfg, sp [0], sp [1]);
10632                         } else {
10633                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10634                         }
10635                         ins_flag = 0;
10636                         ip += 5;
10637                         break;
10638                 case CEE_LDOBJ: {
10639                         int loc_index = -1;
10640                         int stloc_len = 0;
10641
10642                         CHECK_OPSIZE (5);
10643                         CHECK_STACK (1);
10644                         --sp;
10645                         token = read32 (ip + 1);
10646                         klass = mini_get_class (method, token, generic_context);
10647                         CHECK_TYPELOAD (klass);
10648
10649                         /* Optimize the common ldobj+stloc combination */
10650                         switch (ip [5]) {
10651                         case CEE_STLOC_S:
10652                                 loc_index = ip [6];
10653                                 stloc_len = 2;
10654                                 break;
10655                         case CEE_STLOC_0:
10656                         case CEE_STLOC_1:
10657                         case CEE_STLOC_2:
10658                         case CEE_STLOC_3:
10659                                 loc_index = ip [5] - CEE_STLOC_0;
10660                                 stloc_len = 1;
10661                                 break;
10662                         default:
10663                                 break;
10664                         }
10665
10666                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10667                                 CHECK_LOCAL (loc_index);
10668
10669                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10670                                 ins->dreg = cfg->locals [loc_index]->dreg;
10671                                 ins->flags |= ins_flag;
10672                                 ip += 5;
10673                                 ip += stloc_len;
10674                                 if (ins_flag & MONO_INST_VOLATILE) {
10675                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10676                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10677                                 }
10678                                 ins_flag = 0;
10679                                 break;
10680                         }
10681
10682                         /* Optimize the ldobj+stobj combination */
10683                         /* The reference case ends up being a load+store anyway */
10684                         /* Skip this if the operation is volatile. */
10685                         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)) {
10686                                 CHECK_STACK (1);
10687
10688                                 sp --;
10689
10690                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10691
10692                                 ip += 5 + 5;
10693                                 ins_flag = 0;
10694                                 break;
10695                         }
10696
10697                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10698                         ins->flags |= ins_flag;
10699                         *sp++ = ins;
10700
10701                         if (ins_flag & MONO_INST_VOLATILE) {
10702                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10703                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10704                         }
10705
10706                         ip += 5;
10707                         ins_flag = 0;
10708                         inline_costs += 1;
10709                         break;
10710                 }
10711                 case CEE_LDSTR:
10712                         CHECK_STACK_OVF (1);
10713                         CHECK_OPSIZE (5);
10714                         n = read32 (ip + 1);
10715
10716                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10717                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10718                                 ins->type = STACK_OBJ;
10719                                 *sp = ins;
10720                         }
10721                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10722                                 MonoInst *iargs [1];
10723                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10724
10725                                 if (cfg->compile_aot)
10726                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10727                                 else
10728                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10729                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10730                         } else {
10731                                 if (cfg->opt & MONO_OPT_SHARED) {
10732                                         MonoInst *iargs [3];
10733
10734                                         if (cfg->compile_aot) {
10735                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10736                                         }
10737                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10738                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10739                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10740                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10741                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10742                                 } else {
10743                                         if (cfg->cbb->out_of_line) {
10744                                                 MonoInst *iargs [2];
10745
10746                                                 if (image == mono_defaults.corlib) {
10747                                                         /*
10748                                                          * Avoid relocations in AOT and save some space by using a
10749                                                          * version of helper_ldstr specialized to mscorlib.
10750                                                          */
10751                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10752                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10753                                                 } else {
10754                                                         /* Avoid creating the string object */
10755                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10756                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10757                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10758                                                 }
10759                                         }
10760                                         else
10761                                         if (cfg->compile_aot) {
10762                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10763                                                 *sp = ins;
10764                                                 MONO_ADD_INS (cfg->cbb, ins);
10765                                         }
10766                                         else {
10767                                                 NEW_PCONST (cfg, ins, NULL);
10768                                                 ins->type = STACK_OBJ;
10769                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10770                                                 if (!ins->inst_p0)
10771                                                         OUT_OF_MEMORY_FAILURE;
10772
10773                                                 *sp = ins;
10774                                                 MONO_ADD_INS (cfg->cbb, ins);
10775                                         }
10776                                 }
10777                         }
10778
10779                         sp++;
10780                         ip += 5;
10781                         break;
10782                 case CEE_NEWOBJ: {
10783                         MonoInst *iargs [2];
10784                         MonoMethodSignature *fsig;
10785                         MonoInst this_ins;
10786                         MonoInst *alloc;
10787                         MonoInst *vtable_arg = NULL;
10788
10789                         CHECK_OPSIZE (5);
10790                         token = read32 (ip + 1);
10791                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10792                         CHECK_CFG_ERROR;
10793
10794                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10795                         CHECK_CFG_ERROR;
10796
10797                         mono_save_token_info (cfg, image, token, cmethod);
10798
10799                         if (!mono_class_init (cmethod->klass))
10800                                 TYPE_LOAD_ERROR (cmethod->klass);
10801
10802                         context_used = mini_method_check_context_used (cfg, cmethod);
10803
10804                         if (mono_security_core_clr_enabled ())
10805                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10806
10807                         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)) {
10808                                 emit_class_init (cfg, cmethod->klass);
10809                                 CHECK_TYPELOAD (cmethod->klass);
10810                         }
10811
10812                         /*
10813                         if (cfg->gsharedvt) {
10814                                 if (mini_is_gsharedvt_variable_signature (sig))
10815                                         GSHAREDVT_FAILURE (*ip);
10816                         }
10817                         */
10818
10819                         n = fsig->param_count;
10820                         CHECK_STACK (n);
10821
10822                         /*
10823                          * Generate smaller code for the common newobj <exception> instruction in
10824                          * argument checking code.
10825                          */
10826                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10827                                 is_exception_class (cmethod->klass) && n <= 2 &&
10828                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10829                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10830                                 MonoInst *iargs [3];
10831
10832                                 sp -= n;
10833
10834                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10835                                 switch (n) {
10836                                 case 0:
10837                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10838                                         break;
10839                                 case 1:
10840                                         iargs [1] = sp [0];
10841                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10842                                         break;
10843                                 case 2:
10844                                         iargs [1] = sp [0];
10845                                         iargs [2] = sp [1];
10846                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10847                                         break;
10848                                 default:
10849                                         g_assert_not_reached ();
10850                                 }
10851
10852                                 ip += 5;
10853                                 inline_costs += 5;
10854                                 break;
10855                         }
10856
10857                         /* move the args to allow room for 'this' in the first position */
10858                         while (n--) {
10859                                 --sp;
10860                                 sp [1] = sp [0];
10861                         }
10862
10863                         /* check_call_signature () requires sp[0] to be set */
10864                         this_ins.type = STACK_OBJ;
10865                         sp [0] = &this_ins;
10866                         if (check_call_signature (cfg, fsig, sp))
10867                                 UNVERIFIED;
10868
10869                         iargs [0] = NULL;
10870
10871                         if (mini_class_is_system_array (cmethod->klass)) {
10872                                 *sp = emit_get_rgctx_method (cfg, context_used,
10873                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10874
10875                                 /* Avoid varargs in the common case */
10876                                 if (fsig->param_count == 1)
10877                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10878                                 else if (fsig->param_count == 2)
10879                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10880                                 else if (fsig->param_count == 3)
10881                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10882                                 else if (fsig->param_count == 4)
10883                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10884                                 else
10885                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10886                         } else if (cmethod->string_ctor) {
10887                                 g_assert (!context_used);
10888                                 g_assert (!vtable_arg);
10889                                 /* we simply pass a null pointer */
10890                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10891                                 /* now call the string ctor */
10892                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10893                         } else {
10894                                 if (cmethod->klass->valuetype) {
10895                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10896                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10897                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10898
10899                                         alloc = NULL;
10900
10901                                         /*
10902                                          * The code generated by mini_emit_virtual_call () expects
10903                                          * iargs [0] to be a boxed instance, but luckily the vcall
10904                                          * will be transformed into a normal call there.
10905                                          */
10906                                 } else if (context_used) {
10907                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10908                                         *sp = alloc;
10909                                 } else {
10910                                         MonoVTable *vtable = NULL;
10911
10912                                         if (!cfg->compile_aot)
10913                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10914                                         CHECK_TYPELOAD (cmethod->klass);
10915
10916                                         /*
10917                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10918                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10919                                          * As a workaround, we call class cctors before allocating objects.
10920                                          */
10921                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10922                                                 emit_class_init (cfg, cmethod->klass);
10923                                                 if (cfg->verbose_level > 2)
10924                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10925                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10926                                         }
10927
10928                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10929                                         *sp = alloc;
10930                                 }
10931                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10932
10933                                 if (alloc)
10934                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10935
10936                                 /* Now call the actual ctor */
10937                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10938                                 CHECK_CFG_EXCEPTION;
10939                         }
10940
10941                         if (alloc == NULL) {
10942                                 /* Valuetype */
10943                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10944                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10945                                 *sp++= ins;
10946                         } else {
10947                                 *sp++ = alloc;
10948                         }
10949
10950                         ip += 5;
10951                         inline_costs += 5;
10952                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10953                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10954                         break;
10955                 }
10956                 case CEE_CASTCLASS:
10957                         CHECK_STACK (1);
10958                         --sp;
10959                         CHECK_OPSIZE (5);
10960                         token = read32 (ip + 1);
10961                         klass = mini_get_class (method, token, generic_context);
10962                         CHECK_TYPELOAD (klass);
10963                         if (sp [0]->type != STACK_OBJ)
10964                                 UNVERIFIED;
10965
10966                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10967                         CHECK_CFG_EXCEPTION;
10968
10969                         *sp ++ = ins;
10970                         ip += 5;
10971                         break;
10972                 case CEE_ISINST: {
10973                         CHECK_STACK (1);
10974                         --sp;
10975                         CHECK_OPSIZE (5);
10976                         token = read32 (ip + 1);
10977                         klass = mini_get_class (method, token, generic_context);
10978                         CHECK_TYPELOAD (klass);
10979                         if (sp [0]->type != STACK_OBJ)
10980                                 UNVERIFIED;
10981
10982                         context_used = mini_class_check_context_used (cfg, klass);
10983
10984                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10985                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10986                                 MonoInst *args [3];
10987                                 int idx;
10988
10989                                 /* obj */
10990                                 args [0] = *sp;
10991
10992                                 /* klass */
10993                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10994
10995                                 /* inline cache*/
10996                                 idx = get_castclass_cache_idx (cfg);
10997                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
10998
10999                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
11000                                 ip += 5;
11001                                 inline_costs += 2;
11002                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
11003                                 MonoMethod *mono_isinst;
11004                                 MonoInst *iargs [1];
11005                                 int costs;
11006
11007                                 mono_isinst = mono_marshal_get_isinst (klass);
11008                                 iargs [0] = sp [0];
11009
11010                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
11011                                                                            iargs, ip, cfg->real_offset, TRUE);
11012                                 CHECK_CFG_EXCEPTION;
11013                                 g_assert (costs > 0);
11014
11015                                 ip += 5;
11016                                 cfg->real_offset += 5;
11017
11018                                 *sp++= iargs [0];
11019
11020                                 inline_costs += costs;
11021                         }
11022                         else {
11023                                 ins = handle_isinst (cfg, klass, *sp, context_used);
11024                                 CHECK_CFG_EXCEPTION;
11025                                 *sp ++ = ins;
11026                                 ip += 5;
11027                         }
11028                         break;
11029                 }
11030                 case CEE_UNBOX_ANY: {
11031                         MonoInst *res, *addr;
11032
11033                         CHECK_STACK (1);
11034                         --sp;
11035                         CHECK_OPSIZE (5);
11036                         token = read32 (ip + 1);
11037                         klass = mini_get_class (method, token, generic_context);
11038                         CHECK_TYPELOAD (klass);
11039
11040                         mono_save_token_info (cfg, image, token, klass);
11041
11042                         context_used = mini_class_check_context_used (cfg, klass);
11043
11044                         if (mini_is_gsharedvt_klass (klass)) {
11045                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11046                                 inline_costs += 2;
11047                         } else if (generic_class_is_reference_type (cfg, klass)) {
11048                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
11049                                 CHECK_CFG_EXCEPTION;
11050                         } else if (mono_class_is_nullable (klass)) {
11051                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11052                         } else {
11053                                 addr = handle_unbox (cfg, klass, sp, context_used);
11054                                 /* LDOBJ */
11055                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11056                                 res = ins;
11057                                 inline_costs += 2;
11058                         }
11059
11060                         *sp ++ = res;
11061                         ip += 5;
11062                         break;
11063                 }
11064                 case CEE_BOX: {
11065                         MonoInst *val;
11066                         MonoClass *enum_class;
11067                         MonoMethod *has_flag;
11068
11069                         CHECK_STACK (1);
11070                         --sp;
11071                         val = *sp;
11072                         CHECK_OPSIZE (5);
11073                         token = read32 (ip + 1);
11074                         klass = mini_get_class (method, token, generic_context);
11075                         CHECK_TYPELOAD (klass);
11076
11077                         mono_save_token_info (cfg, image, token, klass);
11078
11079                         context_used = mini_class_check_context_used (cfg, klass);
11080
11081                         if (generic_class_is_reference_type (cfg, klass)) {
11082                                 *sp++ = val;
11083                                 ip += 5;
11084                                 break;
11085                         }
11086
11087                         if (klass == mono_defaults.void_class)
11088                                 UNVERIFIED;
11089                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11090                                 UNVERIFIED;
11091                         /* frequent check in generic code: box (struct), brtrue */
11092
11093                         /*
11094                          * Look for:
11095                          *
11096                          *   <push int/long ptr>
11097                          *   <push int/long>
11098                          *   box MyFlags
11099                          *   constrained. MyFlags
11100                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11101                          *
11102                          * If we find this sequence and the operand types on box and constrained
11103                          * are equal, we can emit a specialized instruction sequence instead of
11104                          * the very slow HasFlag () call.
11105                          */
11106                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11107                             /* Cheap checks first. */
11108                             ip + 5 + 6 + 5 < end &&
11109                             ip [5] == CEE_PREFIX1 &&
11110                             ip [6] == CEE_CONSTRAINED_ &&
11111                             ip [11] == CEE_CALLVIRT &&
11112                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11113                             mono_class_is_enum (klass) &&
11114                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11115                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11116                             has_flag->klass == mono_defaults.enum_class &&
11117                             !strcmp (has_flag->name, "HasFlag") &&
11118                             has_flag->signature->hasthis &&
11119                             has_flag->signature->param_count == 1) {
11120                                 CHECK_TYPELOAD (enum_class);
11121
11122                                 if (enum_class == klass) {
11123                                         MonoInst *enum_this, *enum_flag;
11124
11125                                         ip += 5 + 6 + 5;
11126                                         --sp;
11127
11128                                         enum_this = sp [0];
11129                                         enum_flag = sp [1];
11130
11131                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11132                                         break;
11133                                 }
11134                         }
11135
11136                         // FIXME: LLVM can't handle the inconsistent bb linking
11137                         if (!mono_class_is_nullable (klass) &&
11138                                 !mini_is_gsharedvt_klass (klass) &&
11139                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11140                                 (ip [5] == CEE_BRTRUE ||
11141                                  ip [5] == CEE_BRTRUE_S ||
11142                                  ip [5] == CEE_BRFALSE ||
11143                                  ip [5] == CEE_BRFALSE_S)) {
11144                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11145                                 int dreg;
11146                                 MonoBasicBlock *true_bb, *false_bb;
11147
11148                                 ip += 5;
11149
11150                                 if (cfg->verbose_level > 3) {
11151                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11152                                         printf ("<box+brtrue opt>\n");
11153                                 }
11154
11155                                 switch (*ip) {
11156                                 case CEE_BRTRUE_S:
11157                                 case CEE_BRFALSE_S:
11158                                         CHECK_OPSIZE (2);
11159                                         ip++;
11160                                         target = ip + 1 + (signed char)(*ip);
11161                                         ip++;
11162                                         break;
11163                                 case CEE_BRTRUE:
11164                                 case CEE_BRFALSE:
11165                                         CHECK_OPSIZE (5);
11166                                         ip++;
11167                                         target = ip + 4 + (gint)(read32 (ip));
11168                                         ip += 4;
11169                                         break;
11170                                 default:
11171                                         g_assert_not_reached ();
11172                                 }
11173
11174                                 /*
11175                                  * We need to link both bblocks, since it is needed for handling stack
11176                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11177                                  * Branching to only one of them would lead to inconsistencies, so
11178                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11179                                  */
11180                                 GET_BBLOCK (cfg, true_bb, target);
11181                                 GET_BBLOCK (cfg, false_bb, ip);
11182
11183                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11184                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11185
11186                                 if (sp != stack_start) {
11187                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11188                                         sp = stack_start;
11189                                         CHECK_UNVERIFIABLE (cfg);
11190                                 }
11191
11192                                 if (COMPILE_LLVM (cfg)) {
11193                                         dreg = alloc_ireg (cfg);
11194                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11195                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11196
11197                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11198                                 } else {
11199                                         /* The JIT can't eliminate the iconst+compare */
11200                                         MONO_INST_NEW (cfg, ins, OP_BR);
11201                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11202                                         MONO_ADD_INS (cfg->cbb, ins);
11203                                 }
11204
11205                                 start_new_bblock = 1;
11206                                 break;
11207                         }
11208
11209                         *sp++ = handle_box (cfg, val, klass, context_used);
11210
11211                         CHECK_CFG_EXCEPTION;
11212                         ip += 5;
11213                         inline_costs += 1;
11214                         break;
11215                 }
11216                 case CEE_UNBOX: {
11217                         CHECK_STACK (1);
11218                         --sp;
11219                         CHECK_OPSIZE (5);
11220                         token = read32 (ip + 1);
11221                         klass = mini_get_class (method, token, generic_context);
11222                         CHECK_TYPELOAD (klass);
11223
11224                         mono_save_token_info (cfg, image, token, klass);
11225
11226                         context_used = mini_class_check_context_used (cfg, klass);
11227
11228                         if (mono_class_is_nullable (klass)) {
11229                                 MonoInst *val;
11230
11231                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11232                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11233
11234                                 *sp++= ins;
11235                         } else {
11236                                 ins = handle_unbox (cfg, klass, sp, context_used);
11237                                 *sp++ = ins;
11238                         }
11239                         ip += 5;
11240                         inline_costs += 2;
11241                         break;
11242                 }
11243                 case CEE_LDFLD:
11244                 case CEE_LDFLDA:
11245                 case CEE_STFLD:
11246                 case CEE_LDSFLD:
11247                 case CEE_LDSFLDA:
11248                 case CEE_STSFLD: {
11249                         MonoClassField *field;
11250 #ifndef DISABLE_REMOTING
11251                         int costs;
11252 #endif
11253                         guint foffset;
11254                         gboolean is_instance;
11255                         int op;
11256                         gpointer addr = NULL;
11257                         gboolean is_special_static;
11258                         MonoType *ftype;
11259                         MonoInst *store_val = NULL;
11260                         MonoInst *thread_ins;
11261
11262                         op = *ip;
11263                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11264                         if (is_instance) {
11265                                 if (op == CEE_STFLD) {
11266                                         CHECK_STACK (2);
11267                                         sp -= 2;
11268                                         store_val = sp [1];
11269                                 } else {
11270                                         CHECK_STACK (1);
11271                                         --sp;
11272                                 }
11273                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11274                                         UNVERIFIED;
11275                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11276                                         UNVERIFIED;
11277                         } else {
11278                                 if (op == CEE_STSFLD) {
11279                                         CHECK_STACK (1);
11280                                         sp--;
11281                                         store_val = sp [0];
11282                                 }
11283                         }
11284
11285                         CHECK_OPSIZE (5);
11286                         token = read32 (ip + 1);
11287                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11288                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11289                                 klass = field->parent;
11290                         }
11291                         else {
11292                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11293                                 CHECK_CFG_ERROR;
11294                         }
11295                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11296                                 FIELD_ACCESS_FAILURE (method, field);
11297                         mono_class_init (klass);
11298
11299                         /* if the class is Critical then transparent code cannot access it's fields */
11300                         if (!is_instance && mono_security_core_clr_enabled ())
11301                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11302
11303                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11304                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11305                         if (mono_security_core_clr_enabled ())
11306                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11307                         */
11308
11309                         ftype = mono_field_get_type (field);
11310
11311                         /*
11312                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11313                          * the static case.
11314                          */
11315                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11316                                 switch (op) {
11317                                 case CEE_LDFLD:
11318                                         op = CEE_LDSFLD;
11319                                         break;
11320                                 case CEE_STFLD:
11321                                         op = CEE_STSFLD;
11322                                         break;
11323                                 case CEE_LDFLDA:
11324                                         op = CEE_LDSFLDA;
11325                                         break;
11326                                 default:
11327                                         g_assert_not_reached ();
11328                                 }
11329                                 is_instance = FALSE;
11330                         }
11331
11332                         context_used = mini_class_check_context_used (cfg, klass);
11333
11334                         /* INSTANCE CASE */
11335
11336                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11337                         if (op == CEE_STFLD) {
11338                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11339                                         UNVERIFIED;
11340 #ifndef DISABLE_REMOTING
11341                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11342                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11343                                         MonoInst *iargs [5];
11344
11345                                         GSHAREDVT_FAILURE (op);
11346
11347                                         iargs [0] = sp [0];
11348                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11349                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11350                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11351                                                     field->offset);
11352                                         iargs [4] = sp [1];
11353
11354                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11355                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11356                                                                                            iargs, ip, cfg->real_offset, TRUE);
11357                                                 CHECK_CFG_EXCEPTION;
11358                                                 g_assert (costs > 0);
11359
11360                                                 cfg->real_offset += 5;
11361
11362                                                 inline_costs += costs;
11363                                         } else {
11364                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11365                                         }
11366                                 } else
11367 #endif
11368                                 {
11369                                         MonoInst *store;
11370
11371                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11372
11373                                         if (mini_is_gsharedvt_klass (klass)) {
11374                                                 MonoInst *offset_ins;
11375
11376                                                 context_used = mini_class_check_context_used (cfg, klass);
11377
11378                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11379                                                 /* The value is offset by 1 */
11380                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11381                                                 dreg = alloc_ireg_mp (cfg);
11382                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11383                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11384                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11385                                         } else {
11386                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11387                                         }
11388                                         if (sp [0]->opcode != OP_LDADDR)
11389                                                 store->flags |= MONO_INST_FAULT;
11390
11391                                 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)) {
11392                                         /* insert call to write barrier */
11393                                         MonoInst *ptr;
11394                                         int dreg;
11395
11396                                         dreg = alloc_ireg_mp (cfg);
11397                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11398                                         emit_write_barrier (cfg, ptr, sp [1]);
11399                                 }
11400
11401                                         store->flags |= ins_flag;
11402                                 }
11403                                 ins_flag = 0;
11404                                 ip += 5;
11405                                 break;
11406                         }
11407
11408 #ifndef DISABLE_REMOTING
11409                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11410                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11411                                 MonoInst *iargs [4];
11412
11413                                 GSHAREDVT_FAILURE (op);
11414
11415                                 iargs [0] = sp [0];
11416                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11417                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11418                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11419                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11420                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11421                                                                                    iargs, ip, cfg->real_offset, TRUE);
11422                                         CHECK_CFG_EXCEPTION;
11423                                         g_assert (costs > 0);
11424
11425                                         cfg->real_offset += 5;
11426
11427                                         *sp++ = iargs [0];
11428
11429                                         inline_costs += costs;
11430                                 } else {
11431                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11432                                         *sp++ = ins;
11433                                 }
11434                         } else
11435 #endif
11436                         if (is_instance) {
11437                                 if (sp [0]->type == STACK_VTYPE) {
11438                                         MonoInst *var;
11439
11440                                         /* Have to compute the address of the variable */
11441
11442                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11443                                         if (!var)
11444                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11445                                         else
11446                                                 g_assert (var->klass == klass);
11447
11448                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11449                                         sp [0] = ins;
11450                                 }
11451
11452                                 if (op == CEE_LDFLDA) {
11453                                         if (sp [0]->type == STACK_OBJ) {
11454                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11455                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11456                                         }
11457
11458                                         dreg = alloc_ireg_mp (cfg);
11459
11460                                         if (mini_is_gsharedvt_klass (klass)) {
11461                                                 MonoInst *offset_ins;
11462
11463                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11464                                                 /* The value is offset by 1 */
11465                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11466                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11467                                         } else {
11468                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11469                                         }
11470                                         ins->klass = mono_class_from_mono_type (field->type);
11471                                         ins->type = STACK_MP;
11472                                         *sp++ = ins;
11473                                 } else {
11474                                         MonoInst *load;
11475
11476                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11477
11478                                         if (mini_is_gsharedvt_klass (klass)) {
11479                                                 MonoInst *offset_ins;
11480
11481                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11482                                                 /* The value is offset by 1 */
11483                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11484                                                 dreg = alloc_ireg_mp (cfg);
11485                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11486                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11487                                         } else {
11488                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11489                                         }
11490                                         load->flags |= ins_flag;
11491                                         if (sp [0]->opcode != OP_LDADDR)
11492                                                 load->flags |= MONO_INST_FAULT;
11493                                         *sp++ = load;
11494                                 }
11495                         }
11496
11497                         if (is_instance) {
11498                                 ins_flag = 0;
11499                                 ip += 5;
11500                                 break;
11501                         }
11502
11503                         /* STATIC CASE */
11504                         context_used = mini_class_check_context_used (cfg, klass);
11505
11506                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11507                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11508                                 CHECK_CFG_ERROR;
11509                         }
11510
11511                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11512                          * to be called here.
11513                          */
11514                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11515                                 mono_class_vtable (cfg->domain, klass);
11516                                 CHECK_TYPELOAD (klass);
11517                         }
11518                         mono_domain_lock (cfg->domain);
11519                         if (cfg->domain->special_static_fields)
11520                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11521                         mono_domain_unlock (cfg->domain);
11522
11523                         is_special_static = mono_class_field_is_special_static (field);
11524
11525                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11526                                 thread_ins = mono_get_thread_intrinsic (cfg);
11527                         else
11528                                 thread_ins = NULL;
11529
11530                         /* Generate IR to compute the field address */
11531                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11532                                 /*
11533                                  * Fast access to TLS data
11534                                  * Inline version of get_thread_static_data () in
11535                                  * threads.c.
11536                                  */
11537                                 guint32 offset;
11538                                 int idx, static_data_reg, array_reg, dreg;
11539
11540                                 GSHAREDVT_FAILURE (op);
11541
11542                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11543                                 static_data_reg = alloc_ireg (cfg);
11544                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11545
11546                                 if (cfg->compile_aot) {
11547                                         int offset_reg, offset2_reg, idx_reg;
11548
11549                                         /* For TLS variables, this will return the TLS offset */
11550                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11551                                         offset_reg = ins->dreg;
11552                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11553                                         idx_reg = alloc_ireg (cfg);
11554                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11555                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11556                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11557                                         array_reg = alloc_ireg (cfg);
11558                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11559                                         offset2_reg = alloc_ireg (cfg);
11560                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11561                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11562                                         dreg = alloc_ireg (cfg);
11563                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11564                                 } else {
11565                                         offset = (gsize)addr & 0x7fffffff;
11566                                         idx = offset & 0x3f;
11567
11568                                         array_reg = alloc_ireg (cfg);
11569                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11570                                         dreg = alloc_ireg (cfg);
11571                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11572                                 }
11573                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11574                                         (cfg->compile_aot && is_special_static) ||
11575                                         (context_used && is_special_static)) {
11576                                 MonoInst *iargs [2];
11577
11578                                 g_assert (field->parent);
11579                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11580                                 if (context_used) {
11581                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11582                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11583                                 } else {
11584                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11585                                 }
11586                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11587                         } else if (context_used) {
11588                                 MonoInst *static_data;
11589
11590                                 /*
11591                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11592                                         method->klass->name_space, method->klass->name, method->name,
11593                                         depth, field->offset);
11594                                 */
11595
11596                                 if (mono_class_needs_cctor_run (klass, method))
11597                                         emit_class_init (cfg, klass);
11598
11599                                 /*
11600                                  * The pointer we're computing here is
11601                                  *
11602                                  *   super_info.static_data + field->offset
11603                                  */
11604                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11605                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11606
11607                                 if (mini_is_gsharedvt_klass (klass)) {
11608                                         MonoInst *offset_ins;
11609
11610                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11611                                         /* The value is offset by 1 */
11612                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11613                                         dreg = alloc_ireg_mp (cfg);
11614                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11615                                 } else if (field->offset == 0) {
11616                                         ins = static_data;
11617                                 } else {
11618                                         int addr_reg = mono_alloc_preg (cfg);
11619                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11620                                 }
11621                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11622                                 MonoInst *iargs [2];
11623
11624                                 g_assert (field->parent);
11625                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11626                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11627                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11628                         } else {
11629                                 MonoVTable *vtable = NULL;
11630
11631                                 if (!cfg->compile_aot)
11632                                         vtable = mono_class_vtable (cfg->domain, klass);
11633                                 CHECK_TYPELOAD (klass);
11634
11635                                 if (!addr) {
11636                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11637                                                 if (!(g_slist_find (class_inits, klass))) {
11638                                                         emit_class_init (cfg, klass);
11639                                                         if (cfg->verbose_level > 2)
11640                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11641                                                         class_inits = g_slist_prepend (class_inits, klass);
11642                                                 }
11643                                         } else {
11644                                                 if (cfg->run_cctors) {
11645                                                         /* This makes so that inline cannot trigger */
11646                                                         /* .cctors: too many apps depend on them */
11647                                                         /* running with a specific order... */
11648                                                         g_assert (vtable);
11649                                                         if (! vtable->initialized)
11650                                                                 INLINE_FAILURE ("class init");
11651                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11652                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11653                                                                 goto exception_exit;
11654                                                         }
11655                                                 }
11656                                         }
11657                                         if (cfg->compile_aot)
11658                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11659                                         else {
11660                                                 g_assert (vtable);
11661                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11662                                                 g_assert (addr);
11663                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11664                                         }
11665                                 } else {
11666                                         MonoInst *iargs [1];
11667                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11668                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11669                                 }
11670                         }
11671
11672                         /* Generate IR to do the actual load/store operation */
11673
11674                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11675                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11676                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11677                         }
11678
11679                         if (op == CEE_LDSFLDA) {
11680                                 ins->klass = mono_class_from_mono_type (ftype);
11681                                 ins->type = STACK_PTR;
11682                                 *sp++ = ins;
11683                         } else if (op == CEE_STSFLD) {
11684                                 MonoInst *store;
11685
11686                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11687                                 store->flags |= ins_flag;
11688                         } else {
11689                                 gboolean is_const = FALSE;
11690                                 MonoVTable *vtable = NULL;
11691                                 gpointer addr = NULL;
11692
11693                                 if (!context_used) {
11694                                         vtable = mono_class_vtable (cfg->domain, klass);
11695                                         CHECK_TYPELOAD (klass);
11696                                 }
11697                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11698                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11699                                         int ro_type = ftype->type;
11700                                         if (!addr)
11701                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11702                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11703                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11704                                         }
11705
11706                                         GSHAREDVT_FAILURE (op);
11707
11708                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11709                                         is_const = TRUE;
11710                                         switch (ro_type) {
11711                                         case MONO_TYPE_BOOLEAN:
11712                                         case MONO_TYPE_U1:
11713                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11714                                                 sp++;
11715                                                 break;
11716                                         case MONO_TYPE_I1:
11717                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11718                                                 sp++;
11719                                                 break;
11720                                         case MONO_TYPE_CHAR:
11721                                         case MONO_TYPE_U2:
11722                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11723                                                 sp++;
11724                                                 break;
11725                                         case MONO_TYPE_I2:
11726                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11727                                                 sp++;
11728                                                 break;
11729                                                 break;
11730                                         case MONO_TYPE_I4:
11731                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11732                                                 sp++;
11733                                                 break;
11734                                         case MONO_TYPE_U4:
11735                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11736                                                 sp++;
11737                                                 break;
11738                                         case MONO_TYPE_I:
11739                                         case MONO_TYPE_U:
11740                                         case MONO_TYPE_PTR:
11741                                         case MONO_TYPE_FNPTR:
11742                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11743                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11744                                                 sp++;
11745                                                 break;
11746                                         case MONO_TYPE_STRING:
11747                                         case MONO_TYPE_OBJECT:
11748                                         case MONO_TYPE_CLASS:
11749                                         case MONO_TYPE_SZARRAY:
11750                                         case MONO_TYPE_ARRAY:
11751                                                 if (!mono_gc_is_moving ()) {
11752                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11753                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11754                                                         sp++;
11755                                                 } else {
11756                                                         is_const = FALSE;
11757                                                 }
11758                                                 break;
11759                                         case MONO_TYPE_I8:
11760                                         case MONO_TYPE_U8:
11761                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11762                                                 sp++;
11763                                                 break;
11764                                         case MONO_TYPE_R4:
11765                                         case MONO_TYPE_R8:
11766                                         case MONO_TYPE_VALUETYPE:
11767                                         default:
11768                                                 is_const = FALSE;
11769                                                 break;
11770                                         }
11771                                 }
11772
11773                                 if (!is_const) {
11774                                         MonoInst *load;
11775
11776                                         CHECK_STACK_OVF (1);
11777
11778                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11779                                         load->flags |= ins_flag;
11780                                         ins_flag = 0;
11781                                         *sp++ = load;
11782                                 }
11783                         }
11784
11785                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11786                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11787                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11788                         }
11789
11790                         ins_flag = 0;
11791                         ip += 5;
11792                         break;
11793                 }
11794                 case CEE_STOBJ:
11795                         CHECK_STACK (2);
11796                         sp -= 2;
11797                         CHECK_OPSIZE (5);
11798                         token = read32 (ip + 1);
11799                         klass = mini_get_class (method, token, generic_context);
11800                         CHECK_TYPELOAD (klass);
11801                         if (ins_flag & MONO_INST_VOLATILE) {
11802                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11803                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11804                         }
11805                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11806                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11807                         ins->flags |= ins_flag;
11808                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11809                                         generic_class_is_reference_type (cfg, klass)) {
11810                                 /* insert call to write barrier */
11811                                 emit_write_barrier (cfg, sp [0], sp [1]);
11812                         }
11813                         ins_flag = 0;
11814                         ip += 5;
11815                         inline_costs += 1;
11816                         break;
11817
11818                         /*
11819                          * Array opcodes
11820                          */
11821                 case CEE_NEWARR: {
11822                         MonoInst *len_ins;
11823                         const char *data_ptr;
11824                         int data_size = 0;
11825                         guint32 field_token;
11826
11827                         CHECK_STACK (1);
11828                         --sp;
11829
11830                         CHECK_OPSIZE (5);
11831                         token = read32 (ip + 1);
11832
11833                         klass = mini_get_class (method, token, generic_context);
11834                         CHECK_TYPELOAD (klass);
11835
11836                         context_used = mini_class_check_context_used (cfg, klass);
11837
11838                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11839                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11840                                 ins->sreg1 = sp [0]->dreg;
11841                                 ins->type = STACK_I4;
11842                                 ins->dreg = alloc_ireg (cfg);
11843                                 MONO_ADD_INS (cfg->cbb, ins);
11844                                 *sp = mono_decompose_opcode (cfg, ins);
11845                         }
11846
11847                         if (context_used) {
11848                                 MonoInst *args [3];
11849                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11850                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11851
11852                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11853
11854                                 /* vtable */
11855                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11856                                         array_class, MONO_RGCTX_INFO_VTABLE);
11857                                 /* array len */
11858                                 args [1] = sp [0];
11859
11860                                 if (managed_alloc)
11861                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11862                                 else
11863                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11864                         } else {
11865                                 if (cfg->opt & MONO_OPT_SHARED) {
11866                                         /* Decompose now to avoid problems with references to the domainvar */
11867                                         MonoInst *iargs [3];
11868
11869                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11870                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11871                                         iargs [2] = sp [0];
11872
11873                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
11874                                 } else {
11875                                         /* Decompose later since it is needed by abcrem */
11876                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11877                                         mono_class_vtable (cfg->domain, array_type);
11878                                         CHECK_TYPELOAD (array_type);
11879
11880                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11881                                         ins->dreg = alloc_ireg_ref (cfg);
11882                                         ins->sreg1 = sp [0]->dreg;
11883                                         ins->inst_newa_class = klass;
11884                                         ins->type = STACK_OBJ;
11885                                         ins->klass = array_type;
11886                                         MONO_ADD_INS (cfg->cbb, ins);
11887                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11888                                         cfg->cbb->has_array_access = TRUE;
11889
11890                                         /* Needed so mono_emit_load_get_addr () gets called */
11891                                         mono_get_got_var (cfg);
11892                                 }
11893                         }
11894
11895                         len_ins = sp [0];
11896                         ip += 5;
11897                         *sp++ = ins;
11898                         inline_costs += 1;
11899
11900                         /*
11901                          * we inline/optimize the initialization sequence if possible.
11902                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11903                          * for small sizes open code the memcpy
11904                          * ensure the rva field is big enough
11905                          */
11906                         if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, cfg->cbb, ip + 6) && (len_ins->opcode == OP_ICONST) && (data_ptr = initialize_array_data (method, cfg->compile_aot, ip, klass, len_ins->inst_c0, &data_size, &field_token))) {
11907                                 MonoMethod *memcpy_method = get_memcpy_method ();
11908                                 MonoInst *iargs [3];
11909                                 int add_reg = alloc_ireg_mp (cfg);
11910
11911                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11912                                 if (cfg->compile_aot) {
11913                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11914                                 } else {
11915                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11916                                 }
11917                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11918                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11919                                 ip += 11;
11920                         }
11921
11922                         break;
11923                 }
11924                 case CEE_LDLEN:
11925                         CHECK_STACK (1);
11926                         --sp;
11927                         if (sp [0]->type != STACK_OBJ)
11928                                 UNVERIFIED;
11929
11930                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11931                         ins->dreg = alloc_preg (cfg);
11932                         ins->sreg1 = sp [0]->dreg;
11933                         ins->type = STACK_I4;
11934                         /* This flag will be inherited by the decomposition */
11935                         ins->flags |= MONO_INST_FAULT;
11936                         MONO_ADD_INS (cfg->cbb, ins);
11937                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11938                         cfg->cbb->has_array_access = TRUE;
11939                         ip ++;
11940                         *sp++ = ins;
11941                         break;
11942                 case CEE_LDELEMA:
11943                         CHECK_STACK (2);
11944                         sp -= 2;
11945                         CHECK_OPSIZE (5);
11946                         if (sp [0]->type != STACK_OBJ)
11947                                 UNVERIFIED;
11948
11949                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11950
11951                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11952                         CHECK_TYPELOAD (klass);
11953                         /* we need to make sure that this array is exactly the type it needs
11954                          * to be for correctness. the wrappers are lax with their usage
11955                          * so we need to ignore them here
11956                          */
11957                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11958                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11959                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11960                                 CHECK_TYPELOAD (array_class);
11961                         }
11962
11963                         readonly = FALSE;
11964                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11965                         *sp++ = ins;
11966                         ip += 5;
11967                         break;
11968                 case CEE_LDELEM:
11969                 case CEE_LDELEM_I1:
11970                 case CEE_LDELEM_U1:
11971                 case CEE_LDELEM_I2:
11972                 case CEE_LDELEM_U2:
11973                 case CEE_LDELEM_I4:
11974                 case CEE_LDELEM_U4:
11975                 case CEE_LDELEM_I8:
11976                 case CEE_LDELEM_I:
11977                 case CEE_LDELEM_R4:
11978                 case CEE_LDELEM_R8:
11979                 case CEE_LDELEM_REF: {
11980                         MonoInst *addr;
11981
11982                         CHECK_STACK (2);
11983                         sp -= 2;
11984
11985                         if (*ip == CEE_LDELEM) {
11986                                 CHECK_OPSIZE (5);
11987                                 token = read32 (ip + 1);
11988                                 klass = mini_get_class (method, token, generic_context);
11989                                 CHECK_TYPELOAD (klass);
11990                                 mono_class_init (klass);
11991                         }
11992                         else
11993                                 klass = array_access_to_klass (*ip);
11994
11995                         if (sp [0]->type != STACK_OBJ)
11996                                 UNVERIFIED;
11997
11998                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11999
12000                         if (mini_is_gsharedvt_variable_klass (klass)) {
12001                                 // FIXME-VT: OP_ICONST optimization
12002                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12003                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12004                                 ins->opcode = OP_LOADV_MEMBASE;
12005                         } else if (sp [1]->opcode == OP_ICONST) {
12006                                 int array_reg = sp [0]->dreg;
12007                                 int index_reg = sp [1]->dreg;
12008                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
12009
12010                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
12011                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12012
12013                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12014                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12015                         } else {
12016                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12017                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12018                         }
12019                         *sp++ = ins;
12020                         if (*ip == CEE_LDELEM)
12021                                 ip += 5;
12022                         else
12023                                 ++ip;
12024                         break;
12025                 }
12026                 case CEE_STELEM_I:
12027                 case CEE_STELEM_I1:
12028                 case CEE_STELEM_I2:
12029                 case CEE_STELEM_I4:
12030                 case CEE_STELEM_I8:
12031                 case CEE_STELEM_R4:
12032                 case CEE_STELEM_R8:
12033                 case CEE_STELEM_REF:
12034                 case CEE_STELEM: {
12035                         CHECK_STACK (3);
12036                         sp -= 3;
12037
12038                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12039
12040                         if (*ip == CEE_STELEM) {
12041                                 CHECK_OPSIZE (5);
12042                                 token = read32 (ip + 1);
12043                                 klass = mini_get_class (method, token, generic_context);
12044                                 CHECK_TYPELOAD (klass);
12045                                 mono_class_init (klass);
12046                         }
12047                         else
12048                                 klass = array_access_to_klass (*ip);
12049
12050                         if (sp [0]->type != STACK_OBJ)
12051                                 UNVERIFIED;
12052
12053                         emit_array_store (cfg, klass, sp, TRUE);
12054
12055                         if (*ip == CEE_STELEM)
12056                                 ip += 5;
12057                         else
12058                                 ++ip;
12059                         inline_costs += 1;
12060                         break;
12061                 }
12062                 case CEE_CKFINITE: {
12063                         CHECK_STACK (1);
12064                         --sp;
12065
12066                         if (cfg->llvm_only) {
12067                                 MonoInst *iargs [1];
12068
12069                                 iargs [0] = sp [0];
12070                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12071                         } else  {
12072                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12073                                 ins->sreg1 = sp [0]->dreg;
12074                                 ins->dreg = alloc_freg (cfg);
12075                                 ins->type = STACK_R8;
12076                                 MONO_ADD_INS (cfg->cbb, ins);
12077
12078                                 *sp++ = mono_decompose_opcode (cfg, ins);
12079                         }
12080
12081                         ++ip;
12082                         break;
12083                 }
12084                 case CEE_REFANYVAL: {
12085                         MonoInst *src_var, *src;
12086
12087                         int klass_reg = alloc_preg (cfg);
12088                         int dreg = alloc_preg (cfg);
12089
12090                         GSHAREDVT_FAILURE (*ip);
12091
12092                         CHECK_STACK (1);
12093                         MONO_INST_NEW (cfg, ins, *ip);
12094                         --sp;
12095                         CHECK_OPSIZE (5);
12096                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12097                         CHECK_TYPELOAD (klass);
12098
12099                         context_used = mini_class_check_context_used (cfg, klass);
12100
12101                         // FIXME:
12102                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12103                         if (!src_var)
12104                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12105                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12106                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12107
12108                         if (context_used) {
12109                                 MonoInst *klass_ins;
12110
12111                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12112                                                 klass, MONO_RGCTX_INFO_KLASS);
12113
12114                                 // FIXME:
12115                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12116                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12117                         } else {
12118                                 mini_emit_class_check (cfg, klass_reg, klass);
12119                         }
12120                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12121                         ins->type = STACK_MP;
12122                         ins->klass = klass;
12123                         *sp++ = ins;
12124                         ip += 5;
12125                         break;
12126                 }
12127                 case CEE_MKREFANY: {
12128                         MonoInst *loc, *addr;
12129
12130                         GSHAREDVT_FAILURE (*ip);
12131
12132                         CHECK_STACK (1);
12133                         MONO_INST_NEW (cfg, ins, *ip);
12134                         --sp;
12135                         CHECK_OPSIZE (5);
12136                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12137                         CHECK_TYPELOAD (klass);
12138
12139                         context_used = mini_class_check_context_used (cfg, klass);
12140
12141                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12142                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12143
12144                         if (context_used) {
12145                                 MonoInst *const_ins;
12146                                 int type_reg = alloc_preg (cfg);
12147
12148                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12149                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12150                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12151                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12152                         } else if (cfg->compile_aot) {
12153                                 int const_reg = alloc_preg (cfg);
12154                                 int type_reg = alloc_preg (cfg);
12155
12156                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12157                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12158                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12159                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12160                         } else {
12161                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12162                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12163                         }
12164                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12165
12166                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12167                         ins->type = STACK_VTYPE;
12168                         ins->klass = mono_defaults.typed_reference_class;
12169                         *sp++ = ins;
12170                         ip += 5;
12171                         break;
12172                 }
12173                 case CEE_LDTOKEN: {
12174                         gpointer handle;
12175                         MonoClass *handle_class;
12176
12177                         CHECK_STACK_OVF (1);
12178
12179                         CHECK_OPSIZE (5);
12180                         n = read32 (ip + 1);
12181
12182                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12183                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12184                                 handle = mono_method_get_wrapper_data (method, n);
12185                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12186                                 if (handle_class == mono_defaults.typehandle_class)
12187                                         handle = &((MonoClass*)handle)->byval_arg;
12188                         }
12189                         else {
12190                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12191                                 CHECK_CFG_ERROR;
12192                         }
12193                         if (!handle)
12194                                 LOAD_ERROR;
12195                         mono_class_init (handle_class);
12196                         if (cfg->gshared) {
12197                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12198                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12199                                         /* This case handles ldtoken
12200                                            of an open type, like for
12201                                            typeof(Gen<>). */
12202                                         context_used = 0;
12203                                 } else if (handle_class == mono_defaults.typehandle_class) {
12204                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12205                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12206                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12207                                 else if (handle_class == mono_defaults.methodhandle_class)
12208                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12209                                 else
12210                                         g_assert_not_reached ();
12211                         }
12212
12213                         if ((cfg->opt & MONO_OPT_SHARED) &&
12214                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12215                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12216                                 MonoInst *addr, *vtvar, *iargs [3];
12217                                 int method_context_used;
12218
12219                                 method_context_used = mini_method_check_context_used (cfg, method);
12220
12221                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12222
12223                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12224                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12225                                 if (method_context_used) {
12226                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12227                                                 method, MONO_RGCTX_INFO_METHOD);
12228                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12229                                 } else {
12230                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12231                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12232                                 }
12233                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12234
12235                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12236
12237                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12238                         } else {
12239                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12240                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12241                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12242                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12243                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12244                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12245
12246                                         mono_class_init (tclass);
12247                                         if (context_used) {
12248                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12249                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12250                                         } else if (cfg->compile_aot) {
12251                                                 if (method->wrapper_type) {
12252                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12253                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12254                                                                 /* Special case for static synchronized wrappers */
12255                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12256                                                         } else {
12257                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12258                                                                 /* FIXME: n is not a normal token */
12259                                                                 DISABLE_AOT (cfg);
12260                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12261                                                         }
12262                                                 } else {
12263                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12264                                                 }
12265                                         } else {
12266                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12267                                                 CHECK_CFG_ERROR;
12268                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12269                                         }
12270                                         ins->type = STACK_OBJ;
12271                                         ins->klass = cmethod->klass;
12272                                         ip += 5;
12273                                 } else {
12274                                         MonoInst *addr, *vtvar;
12275
12276                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12277
12278                                         if (context_used) {
12279                                                 if (handle_class == mono_defaults.typehandle_class) {
12280                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12281                                                                         mono_class_from_mono_type ((MonoType *)handle),
12282                                                                         MONO_RGCTX_INFO_TYPE);
12283                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12284                                                         ins = emit_get_rgctx_method (cfg, context_used,
12285                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12286                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12287                                                         ins = emit_get_rgctx_field (cfg, context_used,
12288                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12289                                                 } else {
12290                                                         g_assert_not_reached ();
12291                                                 }
12292                                         } else if (cfg->compile_aot) {
12293                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12294                                         } else {
12295                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12296                                         }
12297                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12298                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12299                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12300                                 }
12301                         }
12302
12303                         *sp++ = ins;
12304                         ip += 5;
12305                         break;
12306                 }
12307                 case CEE_THROW:
12308                         CHECK_STACK (1);
12309                         MONO_INST_NEW (cfg, ins, OP_THROW);
12310                         --sp;
12311                         ins->sreg1 = sp [0]->dreg;
12312                         ip++;
12313                         cfg->cbb->out_of_line = TRUE;
12314                         MONO_ADD_INS (cfg->cbb, ins);
12315                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12316                         MONO_ADD_INS (cfg->cbb, ins);
12317                         sp = stack_start;
12318
12319                         link_bblock (cfg, cfg->cbb, end_bblock);
12320                         start_new_bblock = 1;
12321                         /* This can complicate code generation for llvm since the return value might not be defined */
12322                         if (COMPILE_LLVM (cfg))
12323                                 INLINE_FAILURE ("throw");
12324                         break;
12325                 case CEE_ENDFINALLY:
12326                         /* mono_save_seq_point_info () depends on this */
12327                         if (sp != stack_start)
12328                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12329                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12330                         MONO_ADD_INS (cfg->cbb, ins);
12331                         ip++;
12332                         start_new_bblock = 1;
12333
12334                         /*
12335                          * Control will leave the method so empty the stack, otherwise
12336                          * the next basic block will start with a nonempty stack.
12337                          */
12338                         while (sp != stack_start) {
12339                                 sp--;
12340                         }
12341                         break;
12342                 case CEE_LEAVE:
12343                 case CEE_LEAVE_S: {
12344                         GList *handlers;
12345
12346                         if (*ip == CEE_LEAVE) {
12347                                 CHECK_OPSIZE (5);
12348                                 target = ip + 5 + (gint32)read32(ip + 1);
12349                         } else {
12350                                 CHECK_OPSIZE (2);
12351                                 target = ip + 2 + (signed char)(ip [1]);
12352                         }
12353
12354                         /* empty the stack */
12355                         while (sp != stack_start) {
12356                                 sp--;
12357                         }
12358
12359                         /*
12360                          * If this leave statement is in a catch block, check for a
12361                          * pending exception, and rethrow it if necessary.
12362                          * We avoid doing this in runtime invoke wrappers, since those are called
12363                          * by native code which excepts the wrapper to catch all exceptions.
12364                          */
12365                         for (i = 0; i < header->num_clauses; ++i) {
12366                                 MonoExceptionClause *clause = &header->clauses [i];
12367
12368                                 /*
12369                                  * Use <= in the final comparison to handle clauses with multiple
12370                                  * leave statements, like in bug #78024.
12371                                  * The ordering of the exception clauses guarantees that we find the
12372                                  * innermost clause.
12373                                  */
12374                                 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && (clause->flags == MONO_EXCEPTION_CLAUSE_NONE) && (ip - header->code + ((*ip == CEE_LEAVE) ? 5 : 2)) <= (clause->handler_offset + clause->handler_len) && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
12375                                         MonoInst *exc_ins;
12376                                         MonoBasicBlock *dont_throw;
12377
12378                                         /*
12379                                           MonoInst *load;
12380
12381                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12382                                         */
12383
12384                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12385
12386                                         NEW_BBLOCK (cfg, dont_throw);
12387
12388                                         /*
12389                                          * Currently, we always rethrow the abort exception, despite the
12390                                          * fact that this is not correct. See thread6.cs for an example.
12391                                          * But propagating the abort exception is more important than
12392                                          * getting the sematics right.
12393                                          */
12394                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12395                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12396                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12397
12398                                         MONO_START_BB (cfg, dont_throw);
12399                                 }
12400                         }
12401
12402 #ifdef ENABLE_LLVM
12403                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12404 #endif
12405
12406                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12407                                 GList *tmp;
12408                                 MonoExceptionClause *clause;
12409
12410                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12411                                         clause = (MonoExceptionClause *)tmp->data;
12412                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12413                                         g_assert (tblock);
12414                                         link_bblock (cfg, cfg->cbb, tblock);
12415                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12416                                         ins->inst_target_bb = tblock;
12417                                         ins->inst_eh_block = clause;
12418                                         MONO_ADD_INS (cfg->cbb, ins);
12419                                         cfg->cbb->has_call_handler = 1;
12420                                         if (COMPILE_LLVM (cfg)) {
12421                                                 MonoBasicBlock *target_bb;
12422
12423                                                 /*
12424                                                  * Link the finally bblock with the target, since it will
12425                                                  * conceptually branch there.
12426                                                  */
12427                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12428                                                 GET_BBLOCK (cfg, target_bb, target);
12429                                                 link_bblock (cfg, tblock, target_bb);
12430                                         }
12431                                 }
12432                                 g_list_free (handlers);
12433                         }
12434
12435                         MONO_INST_NEW (cfg, ins, OP_BR);
12436                         MONO_ADD_INS (cfg->cbb, ins);
12437                         GET_BBLOCK (cfg, tblock, target);
12438                         link_bblock (cfg, cfg->cbb, tblock);
12439                         ins->inst_target_bb = tblock;
12440
12441                         start_new_bblock = 1;
12442
12443                         if (*ip == CEE_LEAVE)
12444                                 ip += 5;
12445                         else
12446                                 ip += 2;
12447
12448                         break;
12449                 }
12450
12451                         /*
12452                          * Mono specific opcodes
12453                          */
12454                 case MONO_CUSTOM_PREFIX: {
12455
12456                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12457
12458                         CHECK_OPSIZE (2);
12459                         switch (ip [1]) {
12460                         case CEE_MONO_ICALL: {
12461                                 gpointer func;
12462                                 MonoJitICallInfo *info;
12463
12464                                 token = read32 (ip + 2);
12465                                 func = mono_method_get_wrapper_data (method, token);
12466                                 info = mono_find_jit_icall_by_addr (func);
12467                                 if (!info)
12468                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12469                                 g_assert (info);
12470
12471                                 CHECK_STACK (info->sig->param_count);
12472                                 sp -= info->sig->param_count;
12473
12474                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12475                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12476                                         *sp++ = ins;
12477
12478                                 ip += 6;
12479                                 inline_costs += 10 * num_calls++;
12480
12481                                 break;
12482                         }
12483                         case CEE_MONO_LDPTR_CARD_TABLE:
12484                         case CEE_MONO_LDPTR_NURSERY_START:
12485                         case CEE_MONO_LDPTR_NURSERY_BITS:
12486                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12487                                 CHECK_STACK_OVF (1);
12488
12489                                 switch (ip [1]) {
12490                                         case CEE_MONO_LDPTR_CARD_TABLE:
12491                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12492                                                 break;
12493                                         case CEE_MONO_LDPTR_NURSERY_START:
12494                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12495                                                 break;
12496                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12497                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12498                                                 break;
12499                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12500                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12501                                                 break;
12502                                 }
12503
12504                                 *sp++ = ins;
12505                                 ip += 2;
12506                                 inline_costs += 10 * num_calls++;
12507                                 break;
12508                         }
12509                         case CEE_MONO_LDPTR: {
12510                                 gpointer ptr;
12511
12512                                 CHECK_STACK_OVF (1);
12513                                 CHECK_OPSIZE (6);
12514                                 token = read32 (ip + 2);
12515
12516                                 ptr = mono_method_get_wrapper_data (method, token);
12517                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12518                                 *sp++ = ins;
12519                                 ip += 6;
12520                                 inline_costs += 10 * num_calls++;
12521                                 /* Can't embed random pointers into AOT code */
12522                                 DISABLE_AOT (cfg);
12523                                 break;
12524                         }
12525                         case CEE_MONO_JIT_ICALL_ADDR: {
12526                                 MonoJitICallInfo *callinfo;
12527                                 gpointer ptr;
12528
12529                                 CHECK_STACK_OVF (1);
12530                                 CHECK_OPSIZE (6);
12531                                 token = read32 (ip + 2);
12532
12533                                 ptr = mono_method_get_wrapper_data (method, token);
12534                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12535                                 g_assert (callinfo);
12536                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12537                                 *sp++ = ins;
12538                                 ip += 6;
12539                                 inline_costs += 10 * num_calls++;
12540                                 break;
12541                         }
12542                         case CEE_MONO_ICALL_ADDR: {
12543                                 MonoMethod *cmethod;
12544                                 gpointer ptr;
12545
12546                                 CHECK_STACK_OVF (1);
12547                                 CHECK_OPSIZE (6);
12548                                 token = read32 (ip + 2);
12549
12550                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12551
12552                                 if (cfg->compile_aot) {
12553                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12554                                 } else {
12555                                         ptr = mono_lookup_internal_call (cmethod);
12556                                         g_assert (ptr);
12557                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12558                                 }
12559                                 *sp++ = ins;
12560                                 ip += 6;
12561                                 break;
12562                         }
12563                         case CEE_MONO_VTADDR: {
12564                                 MonoInst *src_var, *src;
12565
12566                                 CHECK_STACK (1);
12567                                 --sp;
12568
12569                                 // FIXME:
12570                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12571                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12572                                 *sp++ = src;
12573                                 ip += 2;
12574                                 break;
12575                         }
12576                         case CEE_MONO_NEWOBJ: {
12577                                 MonoInst *iargs [2];
12578
12579                                 CHECK_STACK_OVF (1);
12580                                 CHECK_OPSIZE (6);
12581                                 token = read32 (ip + 2);
12582                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12583                                 mono_class_init (klass);
12584                                 NEW_DOMAINCONST (cfg, iargs [0]);
12585                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12586                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12587                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12588                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12589                                 ip += 6;
12590                                 inline_costs += 10 * num_calls++;
12591                                 break;
12592                         }
12593                         case CEE_MONO_OBJADDR:
12594                                 CHECK_STACK (1);
12595                                 --sp;
12596                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12597                                 ins->dreg = alloc_ireg_mp (cfg);
12598                                 ins->sreg1 = sp [0]->dreg;
12599                                 ins->type = STACK_MP;
12600                                 MONO_ADD_INS (cfg->cbb, ins);
12601                                 *sp++ = ins;
12602                                 ip += 2;
12603                                 break;
12604                         case CEE_MONO_LDNATIVEOBJ:
12605                                 /*
12606                                  * Similar to LDOBJ, but instead load the unmanaged
12607                                  * representation of the vtype to the stack.
12608                                  */
12609                                 CHECK_STACK (1);
12610                                 CHECK_OPSIZE (6);
12611                                 --sp;
12612                                 token = read32 (ip + 2);
12613                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12614                                 g_assert (klass->valuetype);
12615                                 mono_class_init (klass);
12616
12617                                 {
12618                                         MonoInst *src, *dest, *temp;
12619
12620                                         src = sp [0];
12621                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12622                                         temp->backend.is_pinvoke = 1;
12623                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12624                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12625
12626                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12627                                         dest->type = STACK_VTYPE;
12628                                         dest->klass = klass;
12629
12630                                         *sp ++ = dest;
12631                                         ip += 6;
12632                                 }
12633                                 break;
12634                         case CEE_MONO_RETOBJ: {
12635                                 /*
12636                                  * Same as RET, but return the native representation of a vtype
12637                                  * to the caller.
12638                                  */
12639                                 g_assert (cfg->ret);
12640                                 g_assert (mono_method_signature (method)->pinvoke);
12641                                 CHECK_STACK (1);
12642                                 --sp;
12643
12644                                 CHECK_OPSIZE (6);
12645                                 token = read32 (ip + 2);
12646                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12647
12648                                 if (!cfg->vret_addr) {
12649                                         g_assert (cfg->ret_var_is_local);
12650
12651                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12652                                 } else {
12653                                         EMIT_NEW_RETLOADA (cfg, ins);
12654                                 }
12655                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12656
12657                                 if (sp != stack_start)
12658                                         UNVERIFIED;
12659
12660                                 MONO_INST_NEW (cfg, ins, OP_BR);
12661                                 ins->inst_target_bb = end_bblock;
12662                                 MONO_ADD_INS (cfg->cbb, ins);
12663                                 link_bblock (cfg, cfg->cbb, end_bblock);
12664                                 start_new_bblock = 1;
12665                                 ip += 6;
12666                                 break;
12667                         }
12668                         case CEE_MONO_CISINST:
12669                         case CEE_MONO_CCASTCLASS: {
12670                                 int token;
12671                                 CHECK_STACK (1);
12672                                 --sp;
12673                                 CHECK_OPSIZE (6);
12674                                 token = read32 (ip + 2);
12675                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12676                                 if (ip [1] == CEE_MONO_CISINST)
12677                                         ins = handle_cisinst (cfg, klass, sp [0]);
12678                                 else
12679                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12680                                 *sp++ = ins;
12681                                 ip += 6;
12682                                 break;
12683                         }
12684                         case CEE_MONO_SAVE_LMF:
12685                         case CEE_MONO_RESTORE_LMF:
12686                                 ip += 2;
12687                                 break;
12688                         case CEE_MONO_CLASSCONST:
12689                                 CHECK_STACK_OVF (1);
12690                                 CHECK_OPSIZE (6);
12691                                 token = read32 (ip + 2);
12692                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12693                                 *sp++ = ins;
12694                                 ip += 6;
12695                                 inline_costs += 10 * num_calls++;
12696                                 break;
12697                         case CEE_MONO_NOT_TAKEN:
12698                                 cfg->cbb->out_of_line = TRUE;
12699                                 ip += 2;
12700                                 break;
12701                         case CEE_MONO_TLS: {
12702                                 MonoTlsKey key;
12703
12704                                 CHECK_STACK_OVF (1);
12705                                 CHECK_OPSIZE (6);
12706                                 key = (MonoTlsKey)read32 (ip + 2);
12707                                 g_assert (key < TLS_KEY_NUM);
12708
12709                                 ins = mono_create_tls_get (cfg, key);
12710                                 if (!ins) {
12711                                         if (cfg->compile_aot) {
12712                                                 DISABLE_AOT (cfg);
12713                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12714                                                 ins->dreg = alloc_preg (cfg);
12715                                                 ins->type = STACK_PTR;
12716                                         } else {
12717                                                 g_assert_not_reached ();
12718                                         }
12719                                 }
12720                                 ins->type = STACK_PTR;
12721                                 MONO_ADD_INS (cfg->cbb, ins);
12722                                 *sp++ = ins;
12723                                 ip += 6;
12724                                 break;
12725                         }
12726                         case CEE_MONO_DYN_CALL: {
12727                                 MonoCallInst *call;
12728
12729                                 /* It would be easier to call a trampoline, but that would put an
12730                                  * extra frame on the stack, confusing exception handling. So
12731                                  * implement it inline using an opcode for now.
12732                                  */
12733
12734                                 if (!cfg->dyn_call_var) {
12735                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12736                                         /* prevent it from being register allocated */
12737                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12738                                 }
12739
12740                                 /* Has to use a call inst since it local regalloc expects it */
12741                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12742                                 ins = (MonoInst*)call;
12743                                 sp -= 2;
12744                                 ins->sreg1 = sp [0]->dreg;
12745                                 ins->sreg2 = sp [1]->dreg;
12746                                 MONO_ADD_INS (cfg->cbb, ins);
12747
12748                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12749
12750                                 ip += 2;
12751                                 inline_costs += 10 * num_calls++;
12752
12753                                 break;
12754                         }
12755                         case CEE_MONO_MEMORY_BARRIER: {
12756                                 CHECK_OPSIZE (6);
12757                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12758                                 ip += 6;
12759                                 break;
12760                         }
12761                         case CEE_MONO_JIT_ATTACH: {
12762                                 MonoInst *args [16], *domain_ins;
12763                                 MonoInst *ad_ins, *jit_tls_ins;
12764                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12765
12766                                 cfg->attach_cookie = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12767                                 cfg->attach_dummy = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12768
12769                                 if (mono_threads_is_coop_enabled ()) {
12770                                         /* AOT code is only used in the root domain */
12771                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12772                                         EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12773                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12774                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12775                                 } else {
12776                                         EMIT_NEW_PCONST (cfg, ins, NULL);
12777                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12778
12779                                         ad_ins = mono_get_domain_intrinsic (cfg);
12780                                         jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12781
12782                                         if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12783                                                 NEW_BBLOCK (cfg, next_bb);
12784                                                 NEW_BBLOCK (cfg, call_bb);
12785
12786                                                 if (cfg->compile_aot) {
12787                                                         /* AOT code is only used in the root domain */
12788                                                         EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12789                                                 } else {
12790                                                         EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12791                                                 }
12792                                                 MONO_ADD_INS (cfg->cbb, ad_ins);
12793                                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12794                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12795
12796                                                 MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12797                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12798                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12799
12800                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12801                                                 MONO_START_BB (cfg, call_bb);
12802                                         }
12803
12804                                         /* AOT code is only used in the root domain */
12805                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12806                                         EMIT_NEW_PCONST (cfg, args [1], NULL);
12807                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12808                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12809
12810                                         if (next_bb)
12811                                                 MONO_START_BB (cfg, next_bb);
12812                                 }
12813
12814                                 ip += 2;
12815                                 break;
12816                         }
12817                         case CEE_MONO_JIT_DETACH: {
12818                                 MonoInst *args [16];
12819
12820                                 /* Restore the original domain */
12821                                 dreg = alloc_ireg (cfg);
12822                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->attach_cookie->dreg);
12823                                 EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12824                                 mono_emit_jit_icall (cfg, mono_jit_thread_detach, args);
12825                                 ip += 2;
12826                                 break;
12827                         }
12828                         case CEE_MONO_CALLI_EXTRA_ARG: {
12829                                 MonoInst *addr;
12830                                 MonoMethodSignature *fsig;
12831                                 MonoInst *arg;
12832
12833                                 /*
12834                                  * This is the same as CEE_CALLI, but passes an additional argument
12835                                  * to the called method in llvmonly mode.
12836                                  * This is only used by delegate invoke wrappers to call the
12837                                  * actual delegate method.
12838                                  */
12839                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12840
12841                                 CHECK_OPSIZE (6);
12842                                 token = read32 (ip + 2);
12843
12844                                 ins = NULL;
12845
12846                                 cmethod = NULL;
12847                                 CHECK_STACK (1);
12848                                 --sp;
12849                                 addr = *sp;
12850                                 fsig = mini_get_signature (method, token, generic_context);
12851
12852                                 if (cfg->llvm_only)
12853                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12854
12855                                 n = fsig->param_count + fsig->hasthis + 1;
12856
12857                                 CHECK_STACK (n);
12858
12859                                 sp -= n;
12860                                 arg = sp [n - 1];
12861
12862                                 if (cfg->llvm_only) {
12863                                         /*
12864                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12865                                          * cconv. This is set by mono_init_delegate ().
12866                                          */
12867                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12868                                                 MonoInst *callee = addr;
12869                                                 MonoInst *call, *localloc_ins;
12870                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12871                                                 int low_bit_reg = alloc_preg (cfg);
12872
12873                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12874                                                 NEW_BBLOCK (cfg, end_bb);
12875
12876                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12877                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12878                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12879
12880                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12881                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12882                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12883                                                 /*
12884                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12885                                                  */
12886                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12887                                                 ins->dreg = alloc_preg (cfg);
12888                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12889                                                 MONO_ADD_INS (cfg->cbb, ins);
12890                                                 localloc_ins = ins;
12891                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12892                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12893                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12894
12895                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12896                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12897
12898                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12899                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12900                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12901                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12902                                                 ins->dreg = call->dreg;
12903
12904                                                 MONO_START_BB (cfg, end_bb);
12905                                         } else {
12906                                                 /* Caller uses a normal calling conv */
12907
12908                                                 MonoInst *callee = addr;
12909                                                 MonoInst *call, *localloc_ins;
12910                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12911                                                 int low_bit_reg = alloc_preg (cfg);
12912
12913                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12914                                                 NEW_BBLOCK (cfg, end_bb);
12915
12916                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12917                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12918                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12919
12920                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12921                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12922                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12923                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12924                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12925                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12926                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12927                                                 MONO_ADD_INS (cfg->cbb, addr);
12928                                                 /*
12929                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12930                                                  */
12931                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12932                                                 ins->dreg = alloc_preg (cfg);
12933                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12934                                                 MONO_ADD_INS (cfg->cbb, ins);
12935                                                 localloc_ins = ins;
12936                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12937                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12938                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12939
12940                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12941                                                 ins->dreg = call->dreg;
12942                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12943
12944                                                 MONO_START_BB (cfg, end_bb);
12945                                         }
12946                                 } else {
12947                                         /* Same as CEE_CALLI */
12948                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12949                                                 /*
12950                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12951                                                  */
12952                                                 MonoInst *callee = addr;
12953
12954                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12955                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12956                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12957                                         } else {
12958                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12959                                         }
12960                                 }
12961
12962                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12963                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12964
12965                                 CHECK_CFG_EXCEPTION;
12966
12967                                 ip += 6;
12968                                 ins_flag = 0;
12969                                 constrained_class = NULL;
12970                                 break;
12971                         }
12972                         default:
12973                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12974                                 break;
12975                         }
12976                         break;
12977                 }
12978
12979                 case CEE_PREFIX1: {
12980                         CHECK_OPSIZE (2);
12981                         switch (ip [1]) {
12982                         case CEE_ARGLIST: {
12983                                 /* somewhat similar to LDTOKEN */
12984                                 MonoInst *addr, *vtvar;
12985                                 CHECK_STACK_OVF (1);
12986                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12987
12988                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12989                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12990
12991                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12992                                 ins->type = STACK_VTYPE;
12993                                 ins->klass = mono_defaults.argumenthandle_class;
12994                                 *sp++ = ins;
12995                                 ip += 2;
12996                                 break;
12997                         }
12998                         case CEE_CEQ:
12999                         case CEE_CGT:
13000                         case CEE_CGT_UN:
13001                         case CEE_CLT:
13002                         case CEE_CLT_UN: {
13003                                 MonoInst *cmp, *arg1, *arg2;
13004
13005                                 CHECK_STACK (2);
13006                                 sp -= 2;
13007                                 arg1 = sp [0];
13008                                 arg2 = sp [1];
13009
13010                                 /*
13011                                  * The following transforms:
13012                                  *    CEE_CEQ    into OP_CEQ
13013                                  *    CEE_CGT    into OP_CGT
13014                                  *    CEE_CGT_UN into OP_CGT_UN
13015                                  *    CEE_CLT    into OP_CLT
13016                                  *    CEE_CLT_UN into OP_CLT_UN
13017                                  */
13018                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13019
13020                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13021                                 cmp->sreg1 = arg1->dreg;
13022                                 cmp->sreg2 = arg2->dreg;
13023                                 type_from_op (cfg, cmp, arg1, arg2);
13024                                 CHECK_TYPE (cmp);
13025                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13026                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13027                                         cmp->opcode = OP_LCOMPARE;
13028                                 else if (arg1->type == STACK_R4)
13029                                         cmp->opcode = OP_RCOMPARE;
13030                                 else if (arg1->type == STACK_R8)
13031                                         cmp->opcode = OP_FCOMPARE;
13032                                 else
13033                                         cmp->opcode = OP_ICOMPARE;
13034                                 MONO_ADD_INS (cfg->cbb, cmp);
13035                                 ins->type = STACK_I4;
13036                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13037                                 type_from_op (cfg, ins, arg1, arg2);
13038
13039                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13040                                         /*
13041                                          * The backends expect the fceq opcodes to do the
13042                                          * comparison too.
13043                                          */
13044                                         ins->sreg1 = cmp->sreg1;
13045                                         ins->sreg2 = cmp->sreg2;
13046                                         NULLIFY_INS (cmp);
13047                                 }
13048                                 MONO_ADD_INS (cfg->cbb, ins);
13049                                 *sp++ = ins;
13050                                 ip += 2;
13051                                 break;
13052                         }
13053                         case CEE_LDFTN: {
13054                                 MonoInst *argconst;
13055                                 MonoMethod *cil_method;
13056
13057                                 CHECK_STACK_OVF (1);
13058                                 CHECK_OPSIZE (6);
13059                                 n = read32 (ip + 2);
13060                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13061                                 CHECK_CFG_ERROR;
13062
13063                                 mono_class_init (cmethod->klass);
13064
13065                                 mono_save_token_info (cfg, image, n, cmethod);
13066
13067                                 context_used = mini_method_check_context_used (cfg, cmethod);
13068
13069                                 cil_method = cmethod;
13070                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13071                                         METHOD_ACCESS_FAILURE (method, cil_method);
13072
13073                                 if (mono_security_core_clr_enabled ())
13074                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13075
13076                                 /*
13077                                  * Optimize the common case of ldftn+delegate creation
13078                                  */
13079                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13080                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13081                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13082                                                 MonoInst *target_ins, *handle_ins;
13083                                                 MonoMethod *invoke;
13084                                                 int invoke_context_used;
13085
13086                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13087                                                 if (!invoke || !mono_method_signature (invoke))
13088                                                         LOAD_ERROR;
13089
13090                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13091
13092                                                 target_ins = sp [-1];
13093
13094                                                 if (mono_security_core_clr_enabled ())
13095                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13096
13097                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13098                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13099                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13100                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13101                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13102                                                         }
13103                                                 }
13104
13105                                                 /* FIXME: SGEN support */
13106                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13107                                                         ip += 6;
13108                                                         if (cfg->verbose_level > 3)
13109                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13110                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13111                                                                 sp --;
13112                                                                 *sp = handle_ins;
13113                                                                 CHECK_CFG_EXCEPTION;
13114                                                                 ip += 5;
13115                                                                 sp ++;
13116                                                                 break;
13117                                                         }
13118                                                         ip -= 6;
13119                                                 }
13120                                         }
13121                                 }
13122
13123                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13124                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13125                                 *sp++ = ins;
13126
13127                                 ip += 6;
13128                                 inline_costs += 10 * num_calls++;
13129                                 break;
13130                         }
13131                         case CEE_LDVIRTFTN: {
13132                                 MonoInst *args [2];
13133
13134                                 CHECK_STACK (1);
13135                                 CHECK_OPSIZE (6);
13136                                 n = read32 (ip + 2);
13137                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13138                                 CHECK_CFG_ERROR;
13139
13140                                 mono_class_init (cmethod->klass);
13141
13142                                 context_used = mini_method_check_context_used (cfg, cmethod);
13143
13144                                 if (mono_security_core_clr_enabled ())
13145                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13146
13147                                 /*
13148                                  * Optimize the common case of ldvirtftn+delegate creation
13149                                  */
13150                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ) && (ip > header->code && ip [-1] == CEE_DUP)) {
13151                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13152                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13153                                                 MonoInst *target_ins, *handle_ins;
13154                                                 MonoMethod *invoke;
13155                                                 int invoke_context_used;
13156                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13157
13158                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13159                                                 if (!invoke || !mono_method_signature (invoke))
13160                                                         LOAD_ERROR;
13161
13162                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13163
13164                                                 target_ins = sp [-1];
13165
13166                                                 if (mono_security_core_clr_enabled ())
13167                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13168
13169                                                 /* FIXME: SGEN support */
13170                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13171                                                         ip += 6;
13172                                                         if (cfg->verbose_level > 3)
13173                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13174                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13175                                                                 sp -= 2;
13176                                                                 *sp = handle_ins;
13177                                                                 CHECK_CFG_EXCEPTION;
13178                                                                 ip += 5;
13179                                                                 sp ++;
13180                                                                 break;
13181                                                         }
13182                                                         ip -= 6;
13183                                                 }
13184                                         }
13185                                 }
13186
13187                                 --sp;
13188                                 args [0] = *sp;
13189
13190                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13191                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13192
13193                                 if (context_used)
13194                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13195                                 else
13196                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13197
13198                                 ip += 6;
13199                                 inline_costs += 10 * num_calls++;
13200                                 break;
13201                         }
13202                         case CEE_LDARG:
13203                                 CHECK_STACK_OVF (1);
13204                                 CHECK_OPSIZE (4);
13205                                 n = read16 (ip + 2);
13206                                 CHECK_ARG (n);
13207                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13208                                 *sp++ = ins;
13209                                 ip += 4;
13210                                 break;
13211                         case CEE_LDARGA:
13212                                 CHECK_STACK_OVF (1);
13213                                 CHECK_OPSIZE (4);
13214                                 n = read16 (ip + 2);
13215                                 CHECK_ARG (n);
13216                                 NEW_ARGLOADA (cfg, ins, n);
13217                                 MONO_ADD_INS (cfg->cbb, ins);
13218                                 *sp++ = ins;
13219                                 ip += 4;
13220                                 break;
13221                         case CEE_STARG:
13222                                 CHECK_STACK (1);
13223                                 --sp;
13224                                 CHECK_OPSIZE (4);
13225                                 n = read16 (ip + 2);
13226                                 CHECK_ARG (n);
13227                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13228                                         UNVERIFIED;
13229                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13230                                 ip += 4;
13231                                 break;
13232                         case CEE_LDLOC:
13233                                 CHECK_STACK_OVF (1);
13234                                 CHECK_OPSIZE (4);
13235                                 n = read16 (ip + 2);
13236                                 CHECK_LOCAL (n);
13237                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13238                                 *sp++ = ins;
13239                                 ip += 4;
13240                                 break;
13241                         case CEE_LDLOCA: {
13242                                 unsigned char *tmp_ip;
13243                                 CHECK_STACK_OVF (1);
13244                                 CHECK_OPSIZE (4);
13245                                 n = read16 (ip + 2);
13246                                 CHECK_LOCAL (n);
13247
13248                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13249                                         ip = tmp_ip;
13250                                         inline_costs += 1;
13251                                         break;
13252                                 }
13253
13254                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13255                                 *sp++ = ins;
13256                                 ip += 4;
13257                                 break;
13258                         }
13259                         case CEE_STLOC:
13260                                 CHECK_STACK (1);
13261                                 --sp;
13262                                 CHECK_OPSIZE (4);
13263                                 n = read16 (ip + 2);
13264                                 CHECK_LOCAL (n);
13265                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13266                                         UNVERIFIED;
13267                                 emit_stloc_ir (cfg, sp, header, n);
13268                                 ip += 4;
13269                                 inline_costs += 1;
13270                                 break;
13271                         case CEE_LOCALLOC:
13272                                 CHECK_STACK (1);
13273                                 --sp;
13274                                 if (sp != stack_start)
13275                                         UNVERIFIED;
13276                                 if (cfg->method != method)
13277                                         /*
13278                                          * Inlining this into a loop in a parent could lead to
13279                                          * stack overflows which is different behavior than the
13280                                          * non-inlined case, thus disable inlining in this case.
13281                                          */
13282                                         INLINE_FAILURE("localloc");
13283
13284                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13285                                 ins->dreg = alloc_preg (cfg);
13286                                 ins->sreg1 = sp [0]->dreg;
13287                                 ins->type = STACK_PTR;
13288                                 MONO_ADD_INS (cfg->cbb, ins);
13289
13290                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13291                                 if (init_locals)
13292                                         ins->flags |= MONO_INST_INIT;
13293
13294                                 *sp++ = ins;
13295                                 ip += 2;
13296                                 break;
13297                         case CEE_ENDFILTER: {
13298                                 MonoExceptionClause *clause, *nearest;
13299                                 int cc;
13300
13301                                 CHECK_STACK (1);
13302                                 --sp;
13303                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13304                                         UNVERIFIED;
13305                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13306                                 ins->sreg1 = (*sp)->dreg;
13307                                 MONO_ADD_INS (cfg->cbb, ins);
13308                                 start_new_bblock = 1;
13309                                 ip += 2;
13310
13311                                 nearest = NULL;
13312                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13313                                         clause = &header->clauses [cc];
13314                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13315                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13316                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13317                                                 nearest = clause;
13318                                 }
13319                                 g_assert (nearest);
13320                                 if ((ip - header->code) != nearest->handler_offset)
13321                                         UNVERIFIED;
13322
13323                                 break;
13324                         }
13325                         case CEE_UNALIGNED_:
13326                                 ins_flag |= MONO_INST_UNALIGNED;
13327                                 /* FIXME: record alignment? we can assume 1 for now */
13328                                 CHECK_OPSIZE (3);
13329                                 ip += 3;
13330                                 break;
13331                         case CEE_VOLATILE_:
13332                                 ins_flag |= MONO_INST_VOLATILE;
13333                                 ip += 2;
13334                                 break;
13335                         case CEE_TAIL_:
13336                                 ins_flag   |= MONO_INST_TAILCALL;
13337                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13338                                 /* Can't inline tail calls at this time */
13339                                 inline_costs += 100000;
13340                                 ip += 2;
13341                                 break;
13342                         case CEE_INITOBJ:
13343                                 CHECK_STACK (1);
13344                                 --sp;
13345                                 CHECK_OPSIZE (6);
13346                                 token = read32 (ip + 2);
13347                                 klass = mini_get_class (method, token, generic_context);
13348                                 CHECK_TYPELOAD (klass);
13349                                 if (generic_class_is_reference_type (cfg, klass))
13350                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13351                                 else
13352                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13353                                 ip += 6;
13354                                 inline_costs += 1;
13355                                 break;
13356                         case CEE_CONSTRAINED_:
13357                                 CHECK_OPSIZE (6);
13358                                 token = read32 (ip + 2);
13359                                 constrained_class = mini_get_class (method, token, generic_context);
13360                                 CHECK_TYPELOAD (constrained_class);
13361                                 ip += 6;
13362                                 break;
13363                         case CEE_CPBLK:
13364                         case CEE_INITBLK: {
13365                                 MonoInst *iargs [3];
13366                                 CHECK_STACK (3);
13367                                 sp -= 3;
13368
13369                                 /* Skip optimized paths for volatile operations. */
13370                                 if ((ip [1] == CEE_CPBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
13371                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13372                                 } else if ((ip [1] == CEE_INITBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5) && (sp [1]->opcode == OP_ICONST) && (sp [1]->inst_c0 == 0)) {
13373                                         /* emit_memset only works when val == 0 */
13374                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13375                                 } else {
13376                                         MonoInst *call;
13377                                         iargs [0] = sp [0];
13378                                         iargs [1] = sp [1];
13379                                         iargs [2] = sp [2];
13380                                         if (ip [1] == CEE_CPBLK) {
13381                                                 /*
13382                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13383                                                  * and release barriers for cpblk. It is technically both a load and
13384                                                  * store operation, so it seems like that's the sensible thing to do.
13385                                                  *
13386                                                  * FIXME: We emit full barriers on both sides of the operation for
13387                                                  * simplicity. We should have a separate atomic memcpy method instead.
13388                                                  */
13389                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13390
13391                                                 if (ins_flag & MONO_INST_VOLATILE)
13392                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13393
13394                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13395                                                 call->flags |= ins_flag;
13396
13397                                                 if (ins_flag & MONO_INST_VOLATILE)
13398                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13399                                         } else {
13400                                                 MonoMethod *memset_method = get_memset_method ();
13401                                                 if (ins_flag & MONO_INST_VOLATILE) {
13402                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13403                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13404                                                 }
13405                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13406                                                 call->flags |= ins_flag;
13407                                         }
13408                                 }
13409                                 ip += 2;
13410                                 ins_flag = 0;
13411                                 inline_costs += 1;
13412                                 break;
13413                         }
13414                         case CEE_NO_:
13415                                 CHECK_OPSIZE (3);
13416                                 if (ip [2] & 0x1)
13417                                         ins_flag |= MONO_INST_NOTYPECHECK;
13418                                 if (ip [2] & 0x2)
13419                                         ins_flag |= MONO_INST_NORANGECHECK;
13420                                 /* we ignore the no-nullcheck for now since we
13421                                  * really do it explicitly only when doing callvirt->call
13422                                  */
13423                                 ip += 3;
13424                                 break;
13425                         case CEE_RETHROW: {
13426                                 MonoInst *load;
13427                                 int handler_offset = -1;
13428
13429                                 for (i = 0; i < header->num_clauses; ++i) {
13430                                         MonoExceptionClause *clause = &header->clauses [i];
13431                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13432                                                 handler_offset = clause->handler_offset;
13433                                                 break;
13434                                         }
13435                                 }
13436
13437                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13438
13439                                 if (handler_offset == -1)
13440                                         UNVERIFIED;
13441
13442                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13443                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13444                                 ins->sreg1 = load->dreg;
13445                                 MONO_ADD_INS (cfg->cbb, ins);
13446
13447                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13448                                 MONO_ADD_INS (cfg->cbb, ins);
13449
13450                                 sp = stack_start;
13451                                 link_bblock (cfg, cfg->cbb, end_bblock);
13452                                 start_new_bblock = 1;
13453                                 ip += 2;
13454                                 break;
13455                         }
13456                         case CEE_SIZEOF: {
13457                                 guint32 val;
13458                                 int ialign;
13459
13460                                 CHECK_STACK_OVF (1);
13461                                 CHECK_OPSIZE (6);
13462                                 token = read32 (ip + 2);
13463                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13464                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13465                                         CHECK_CFG_ERROR;
13466
13467                                         val = mono_type_size (type, &ialign);
13468                                 } else {
13469                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13470                                         CHECK_TYPELOAD (klass);
13471
13472                                         val = mono_type_size (&klass->byval_arg, &ialign);
13473
13474                                         if (mini_is_gsharedvt_klass (klass))
13475                                                 GSHAREDVT_FAILURE (*ip);
13476                                 }
13477                                 EMIT_NEW_ICONST (cfg, ins, val);
13478                                 *sp++= ins;
13479                                 ip += 6;
13480                                 break;
13481                         }
13482                         case CEE_REFANYTYPE: {
13483                                 MonoInst *src_var, *src;
13484
13485                                 GSHAREDVT_FAILURE (*ip);
13486
13487                                 CHECK_STACK (1);
13488                                 --sp;
13489
13490                                 // FIXME:
13491                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13492                                 if (!src_var)
13493                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13494                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13495                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13496                                 *sp++ = ins;
13497                                 ip += 2;
13498                                 break;
13499                         }
13500                         case CEE_READONLY_:
13501                                 readonly = TRUE;
13502                                 ip += 2;
13503                                 break;
13504
13505                         case CEE_UNUSED56:
13506                         case CEE_UNUSED57:
13507                         case CEE_UNUSED70:
13508                         case CEE_UNUSED:
13509                         case CEE_UNUSED99:
13510                                 UNVERIFIED;
13511
13512                         default:
13513                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13514                                 UNVERIFIED;
13515                         }
13516                         break;
13517                 }
13518                 case CEE_UNUSED58:
13519                 case CEE_UNUSED1:
13520                         UNVERIFIED;
13521
13522                 default:
13523                         g_warning ("opcode 0x%02x not handled", *ip);
13524                         UNVERIFIED;
13525                 }
13526         }
13527         if (start_new_bblock != 1)
13528                 UNVERIFIED;
13529
13530         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13531         if (cfg->cbb->next_bb) {
13532                 /* This could already be set because of inlining, #693905 */
13533                 MonoBasicBlock *bb = cfg->cbb;
13534
13535                 while (bb->next_bb)
13536                         bb = bb->next_bb;
13537                 bb->next_bb = end_bblock;
13538         } else {
13539                 cfg->cbb->next_bb = end_bblock;
13540         }
13541
13542         if (cfg->method == method && cfg->domainvar) {
13543                 MonoInst *store;
13544                 MonoInst *get_domain;
13545
13546                 cfg->cbb = init_localsbb;
13547
13548                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13549                         MONO_ADD_INS (cfg->cbb, get_domain);
13550                 } else {
13551                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13552                 }
13553                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13554                 MONO_ADD_INS (cfg->cbb, store);
13555         }
13556
13557 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13558         if (cfg->compile_aot)
13559                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13560                 mono_get_got_var (cfg);
13561 #endif
13562
13563         if (cfg->method == method && cfg->got_var)
13564                 mono_emit_load_got_addr (cfg);
13565
13566         if (init_localsbb) {
13567                 cfg->cbb = init_localsbb;
13568                 cfg->ip = NULL;
13569                 for (i = 0; i < header->num_locals; ++i) {
13570                         emit_init_local (cfg, i, header->locals [i], init_locals);
13571                 }
13572         }
13573
13574         if (cfg->init_ref_vars && cfg->method == method) {
13575                 /* Emit initialization for ref vars */
13576                 // FIXME: Avoid duplication initialization for IL locals.
13577                 for (i = 0; i < cfg->num_varinfo; ++i) {
13578                         MonoInst *ins = cfg->varinfo [i];
13579
13580                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13581                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13582                 }
13583         }
13584
13585         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13586                 cfg->cbb = init_localsbb;
13587                 emit_push_lmf (cfg);
13588         }
13589
13590         cfg->cbb = init_localsbb;
13591         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13592
13593         if (seq_points) {
13594                 MonoBasicBlock *bb;
13595
13596                 /*
13597                  * Make seq points at backward branch targets interruptable.
13598                  */
13599                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13600                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13601                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13602         }
13603
13604         /* Add a sequence point for method entry/exit events */
13605         if (seq_points && cfg->gen_sdb_seq_points) {
13606                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13607                 MONO_ADD_INS (init_localsbb, ins);
13608                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13609                 MONO_ADD_INS (cfg->bb_exit, ins);
13610         }
13611
13612         /*
13613          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13614          * the code they refer to was dead (#11880).
13615          */
13616         if (sym_seq_points) {
13617                 for (i = 0; i < header->code_size; ++i) {
13618                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13619                                 MonoInst *ins;
13620
13621                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13622                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13623                         }
13624                 }
13625         }
13626
13627         cfg->ip = NULL;
13628
13629         if (cfg->method == method) {
13630                 MonoBasicBlock *bb;
13631                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13632                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13633                         if (cfg->spvars)
13634                                 mono_create_spvar_for_region (cfg, bb->region);
13635                         if (cfg->verbose_level > 2)
13636                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13637                 }
13638         }
13639
13640         if (inline_costs < 0) {
13641                 char *mname;
13642
13643                 /* Method is too large */
13644                 mname = mono_method_full_name (method, TRUE);
13645                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13646                 g_free (mname);
13647         }
13648
13649         if ((cfg->verbose_level > 2) && (cfg->method == method))
13650                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13651
13652         goto cleanup;
13653
13654 mono_error_exit:
13655         g_assert (!mono_error_ok (&cfg->error));
13656         goto cleanup;
13657
13658  exception_exit:
13659         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13660         goto cleanup;
13661
13662  unverified:
13663         set_exception_type_from_invalid_il (cfg, method, ip);
13664         goto cleanup;
13665
13666  cleanup:
13667         g_slist_free (class_inits);
13668         mono_basic_block_free (original_bb);
13669         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13670         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13671         if (cfg->exception_type)
13672                 return -1;
13673         else
13674                 return inline_costs;
13675 }
13676
13677 static int
13678 store_membase_reg_to_store_membase_imm (int opcode)
13679 {
13680         switch (opcode) {
13681         case OP_STORE_MEMBASE_REG:
13682                 return OP_STORE_MEMBASE_IMM;
13683         case OP_STOREI1_MEMBASE_REG:
13684                 return OP_STOREI1_MEMBASE_IMM;
13685         case OP_STOREI2_MEMBASE_REG:
13686                 return OP_STOREI2_MEMBASE_IMM;
13687         case OP_STOREI4_MEMBASE_REG:
13688                 return OP_STOREI4_MEMBASE_IMM;
13689         case OP_STOREI8_MEMBASE_REG:
13690                 return OP_STOREI8_MEMBASE_IMM;
13691         default:
13692                 g_assert_not_reached ();
13693         }
13694
13695         return -1;
13696 }
13697
13698 int
13699 mono_op_to_op_imm (int opcode)
13700 {
13701         switch (opcode) {
13702         case OP_IADD:
13703                 return OP_IADD_IMM;
13704         case OP_ISUB:
13705                 return OP_ISUB_IMM;
13706         case OP_IDIV:
13707                 return OP_IDIV_IMM;
13708         case OP_IDIV_UN:
13709                 return OP_IDIV_UN_IMM;
13710         case OP_IREM:
13711                 return OP_IREM_IMM;
13712         case OP_IREM_UN:
13713                 return OP_IREM_UN_IMM;
13714         case OP_IMUL:
13715                 return OP_IMUL_IMM;
13716         case OP_IAND:
13717                 return OP_IAND_IMM;
13718         case OP_IOR:
13719                 return OP_IOR_IMM;
13720         case OP_IXOR:
13721                 return OP_IXOR_IMM;
13722         case OP_ISHL:
13723                 return OP_ISHL_IMM;
13724         case OP_ISHR:
13725                 return OP_ISHR_IMM;
13726         case OP_ISHR_UN:
13727                 return OP_ISHR_UN_IMM;
13728
13729         case OP_LADD:
13730                 return OP_LADD_IMM;
13731         case OP_LSUB:
13732                 return OP_LSUB_IMM;
13733         case OP_LAND:
13734                 return OP_LAND_IMM;
13735         case OP_LOR:
13736                 return OP_LOR_IMM;
13737         case OP_LXOR:
13738                 return OP_LXOR_IMM;
13739         case OP_LSHL:
13740                 return OP_LSHL_IMM;
13741         case OP_LSHR:
13742                 return OP_LSHR_IMM;
13743         case OP_LSHR_UN:
13744                 return OP_LSHR_UN_IMM;
13745 #if SIZEOF_REGISTER == 8
13746         case OP_LREM:
13747                 return OP_LREM_IMM;
13748 #endif
13749
13750         case OP_COMPARE:
13751                 return OP_COMPARE_IMM;
13752         case OP_ICOMPARE:
13753                 return OP_ICOMPARE_IMM;
13754         case OP_LCOMPARE:
13755                 return OP_LCOMPARE_IMM;
13756
13757         case OP_STORE_MEMBASE_REG:
13758                 return OP_STORE_MEMBASE_IMM;
13759         case OP_STOREI1_MEMBASE_REG:
13760                 return OP_STOREI1_MEMBASE_IMM;
13761         case OP_STOREI2_MEMBASE_REG:
13762                 return OP_STOREI2_MEMBASE_IMM;
13763         case OP_STOREI4_MEMBASE_REG:
13764                 return OP_STOREI4_MEMBASE_IMM;
13765
13766 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13767         case OP_X86_PUSH:
13768                 return OP_X86_PUSH_IMM;
13769         case OP_X86_COMPARE_MEMBASE_REG:
13770                 return OP_X86_COMPARE_MEMBASE_IMM;
13771 #endif
13772 #if defined(TARGET_AMD64)
13773         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13774                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13775 #endif
13776         case OP_VOIDCALL_REG:
13777                 return OP_VOIDCALL;
13778         case OP_CALL_REG:
13779                 return OP_CALL;
13780         case OP_LCALL_REG:
13781                 return OP_LCALL;
13782         case OP_FCALL_REG:
13783                 return OP_FCALL;
13784         case OP_LOCALLOC:
13785                 return OP_LOCALLOC_IMM;
13786         }
13787
13788         return -1;
13789 }
13790
13791 static int
13792 ldind_to_load_membase (int opcode)
13793 {
13794         switch (opcode) {
13795         case CEE_LDIND_I1:
13796                 return OP_LOADI1_MEMBASE;
13797         case CEE_LDIND_U1:
13798                 return OP_LOADU1_MEMBASE;
13799         case CEE_LDIND_I2:
13800                 return OP_LOADI2_MEMBASE;
13801         case CEE_LDIND_U2:
13802                 return OP_LOADU2_MEMBASE;
13803         case CEE_LDIND_I4:
13804                 return OP_LOADI4_MEMBASE;
13805         case CEE_LDIND_U4:
13806                 return OP_LOADU4_MEMBASE;
13807         case CEE_LDIND_I:
13808                 return OP_LOAD_MEMBASE;
13809         case CEE_LDIND_REF:
13810                 return OP_LOAD_MEMBASE;
13811         case CEE_LDIND_I8:
13812                 return OP_LOADI8_MEMBASE;
13813         case CEE_LDIND_R4:
13814                 return OP_LOADR4_MEMBASE;
13815         case CEE_LDIND_R8:
13816                 return OP_LOADR8_MEMBASE;
13817         default:
13818                 g_assert_not_reached ();
13819         }
13820
13821         return -1;
13822 }
13823
13824 static int
13825 stind_to_store_membase (int opcode)
13826 {
13827         switch (opcode) {
13828         case CEE_STIND_I1:
13829                 return OP_STOREI1_MEMBASE_REG;
13830         case CEE_STIND_I2:
13831                 return OP_STOREI2_MEMBASE_REG;
13832         case CEE_STIND_I4:
13833                 return OP_STOREI4_MEMBASE_REG;
13834         case CEE_STIND_I:
13835         case CEE_STIND_REF:
13836                 return OP_STORE_MEMBASE_REG;
13837         case CEE_STIND_I8:
13838                 return OP_STOREI8_MEMBASE_REG;
13839         case CEE_STIND_R4:
13840                 return OP_STORER4_MEMBASE_REG;
13841         case CEE_STIND_R8:
13842                 return OP_STORER8_MEMBASE_REG;
13843         default:
13844                 g_assert_not_reached ();
13845         }
13846
13847         return -1;
13848 }
13849
13850 int
13851 mono_load_membase_to_load_mem (int opcode)
13852 {
13853         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13854 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13855         switch (opcode) {
13856         case OP_LOAD_MEMBASE:
13857                 return OP_LOAD_MEM;
13858         case OP_LOADU1_MEMBASE:
13859                 return OP_LOADU1_MEM;
13860         case OP_LOADU2_MEMBASE:
13861                 return OP_LOADU2_MEM;
13862         case OP_LOADI4_MEMBASE:
13863                 return OP_LOADI4_MEM;
13864         case OP_LOADU4_MEMBASE:
13865                 return OP_LOADU4_MEM;
13866 #if SIZEOF_REGISTER == 8
13867         case OP_LOADI8_MEMBASE:
13868                 return OP_LOADI8_MEM;
13869 #endif
13870         }
13871 #endif
13872
13873         return -1;
13874 }
13875
13876 static inline int
13877 op_to_op_dest_membase (int store_opcode, int opcode)
13878 {
13879 #if defined(TARGET_X86)
13880         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13881                 return -1;
13882
13883         switch (opcode) {
13884         case OP_IADD:
13885                 return OP_X86_ADD_MEMBASE_REG;
13886         case OP_ISUB:
13887                 return OP_X86_SUB_MEMBASE_REG;
13888         case OP_IAND:
13889                 return OP_X86_AND_MEMBASE_REG;
13890         case OP_IOR:
13891                 return OP_X86_OR_MEMBASE_REG;
13892         case OP_IXOR:
13893                 return OP_X86_XOR_MEMBASE_REG;
13894         case OP_ADD_IMM:
13895         case OP_IADD_IMM:
13896                 return OP_X86_ADD_MEMBASE_IMM;
13897         case OP_SUB_IMM:
13898         case OP_ISUB_IMM:
13899                 return OP_X86_SUB_MEMBASE_IMM;
13900         case OP_AND_IMM:
13901         case OP_IAND_IMM:
13902                 return OP_X86_AND_MEMBASE_IMM;
13903         case OP_OR_IMM:
13904         case OP_IOR_IMM:
13905                 return OP_X86_OR_MEMBASE_IMM;
13906         case OP_XOR_IMM:
13907         case OP_IXOR_IMM:
13908                 return OP_X86_XOR_MEMBASE_IMM;
13909         case OP_MOVE:
13910                 return OP_NOP;
13911         }
13912 #endif
13913
13914 #if defined(TARGET_AMD64)
13915         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13916                 return -1;
13917
13918         switch (opcode) {
13919         case OP_IADD:
13920                 return OP_X86_ADD_MEMBASE_REG;
13921         case OP_ISUB:
13922                 return OP_X86_SUB_MEMBASE_REG;
13923         case OP_IAND:
13924                 return OP_X86_AND_MEMBASE_REG;
13925         case OP_IOR:
13926                 return OP_X86_OR_MEMBASE_REG;
13927         case OP_IXOR:
13928                 return OP_X86_XOR_MEMBASE_REG;
13929         case OP_IADD_IMM:
13930                 return OP_X86_ADD_MEMBASE_IMM;
13931         case OP_ISUB_IMM:
13932                 return OP_X86_SUB_MEMBASE_IMM;
13933         case OP_IAND_IMM:
13934                 return OP_X86_AND_MEMBASE_IMM;
13935         case OP_IOR_IMM:
13936                 return OP_X86_OR_MEMBASE_IMM;
13937         case OP_IXOR_IMM:
13938                 return OP_X86_XOR_MEMBASE_IMM;
13939         case OP_LADD:
13940                 return OP_AMD64_ADD_MEMBASE_REG;
13941         case OP_LSUB:
13942                 return OP_AMD64_SUB_MEMBASE_REG;
13943         case OP_LAND:
13944                 return OP_AMD64_AND_MEMBASE_REG;
13945         case OP_LOR:
13946                 return OP_AMD64_OR_MEMBASE_REG;
13947         case OP_LXOR:
13948                 return OP_AMD64_XOR_MEMBASE_REG;
13949         case OP_ADD_IMM:
13950         case OP_LADD_IMM:
13951                 return OP_AMD64_ADD_MEMBASE_IMM;
13952         case OP_SUB_IMM:
13953         case OP_LSUB_IMM:
13954                 return OP_AMD64_SUB_MEMBASE_IMM;
13955         case OP_AND_IMM:
13956         case OP_LAND_IMM:
13957                 return OP_AMD64_AND_MEMBASE_IMM;
13958         case OP_OR_IMM:
13959         case OP_LOR_IMM:
13960                 return OP_AMD64_OR_MEMBASE_IMM;
13961         case OP_XOR_IMM:
13962         case OP_LXOR_IMM:
13963                 return OP_AMD64_XOR_MEMBASE_IMM;
13964         case OP_MOVE:
13965                 return OP_NOP;
13966         }
13967 #endif
13968
13969         return -1;
13970 }
13971
13972 static inline int
13973 op_to_op_store_membase (int store_opcode, int opcode)
13974 {
13975 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13976         switch (opcode) {
13977         case OP_ICEQ:
13978                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13979                         return OP_X86_SETEQ_MEMBASE;
13980         case OP_CNE:
13981                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13982                         return OP_X86_SETNE_MEMBASE;
13983         }
13984 #endif
13985
13986         return -1;
13987 }
13988
13989 static inline int
13990 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13991 {
13992 #ifdef TARGET_X86
13993         /* FIXME: This has sign extension issues */
13994         /*
13995         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13996                 return OP_X86_COMPARE_MEMBASE8_IMM;
13997         */
13998
13999         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14000                 return -1;
14001
14002         switch (opcode) {
14003         case OP_X86_PUSH:
14004                 return OP_X86_PUSH_MEMBASE;
14005         case OP_COMPARE_IMM:
14006         case OP_ICOMPARE_IMM:
14007                 return OP_X86_COMPARE_MEMBASE_IMM;
14008         case OP_COMPARE:
14009         case OP_ICOMPARE:
14010                 return OP_X86_COMPARE_MEMBASE_REG;
14011         }
14012 #endif
14013
14014 #ifdef TARGET_AMD64
14015         /* FIXME: This has sign extension issues */
14016         /*
14017         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14018                 return OP_X86_COMPARE_MEMBASE8_IMM;
14019         */
14020
14021         switch (opcode) {
14022         case OP_X86_PUSH:
14023                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14024                         return OP_X86_PUSH_MEMBASE;
14025                 break;
14026                 /* FIXME: This only works for 32 bit immediates
14027         case OP_COMPARE_IMM:
14028         case OP_LCOMPARE_IMM:
14029                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14030                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14031                 */
14032         case OP_ICOMPARE_IMM:
14033                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14034                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14035                 break;
14036         case OP_COMPARE:
14037         case OP_LCOMPARE:
14038                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14039                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14040                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14041                         return OP_AMD64_COMPARE_MEMBASE_REG;
14042                 break;
14043         case OP_ICOMPARE:
14044                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14045                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14046                 break;
14047         }
14048 #endif
14049
14050         return -1;
14051 }
14052
14053 static inline int
14054 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14055 {
14056 #ifdef TARGET_X86
14057         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14058                 return -1;
14059
14060         switch (opcode) {
14061         case OP_COMPARE:
14062         case OP_ICOMPARE:
14063                 return OP_X86_COMPARE_REG_MEMBASE;
14064         case OP_IADD:
14065                 return OP_X86_ADD_REG_MEMBASE;
14066         case OP_ISUB:
14067                 return OP_X86_SUB_REG_MEMBASE;
14068         case OP_IAND:
14069                 return OP_X86_AND_REG_MEMBASE;
14070         case OP_IOR:
14071                 return OP_X86_OR_REG_MEMBASE;
14072         case OP_IXOR:
14073                 return OP_X86_XOR_REG_MEMBASE;
14074         }
14075 #endif
14076
14077 #ifdef TARGET_AMD64
14078         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14079                 switch (opcode) {
14080                 case OP_ICOMPARE:
14081                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14082                 case OP_IADD:
14083                         return OP_X86_ADD_REG_MEMBASE;
14084                 case OP_ISUB:
14085                         return OP_X86_SUB_REG_MEMBASE;
14086                 case OP_IAND:
14087                         return OP_X86_AND_REG_MEMBASE;
14088                 case OP_IOR:
14089                         return OP_X86_OR_REG_MEMBASE;
14090                 case OP_IXOR:
14091                         return OP_X86_XOR_REG_MEMBASE;
14092                 }
14093         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14094                 switch (opcode) {
14095                 case OP_COMPARE:
14096                 case OP_LCOMPARE:
14097                         return OP_AMD64_COMPARE_REG_MEMBASE;
14098                 case OP_LADD:
14099                         return OP_AMD64_ADD_REG_MEMBASE;
14100                 case OP_LSUB:
14101                         return OP_AMD64_SUB_REG_MEMBASE;
14102                 case OP_LAND:
14103                         return OP_AMD64_AND_REG_MEMBASE;
14104                 case OP_LOR:
14105                         return OP_AMD64_OR_REG_MEMBASE;
14106                 case OP_LXOR:
14107                         return OP_AMD64_XOR_REG_MEMBASE;
14108                 }
14109         }
14110 #endif
14111
14112         return -1;
14113 }
14114
14115 int
14116 mono_op_to_op_imm_noemul (int opcode)
14117 {
14118         switch (opcode) {
14119 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14120         case OP_LSHR:
14121         case OP_LSHL:
14122         case OP_LSHR_UN:
14123                 return -1;
14124 #endif
14125 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14126         case OP_IDIV:
14127         case OP_IDIV_UN:
14128         case OP_IREM:
14129         case OP_IREM_UN:
14130                 return -1;
14131 #endif
14132 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14133         case OP_IMUL:
14134                 return -1;
14135 #endif
14136         default:
14137                 return mono_op_to_op_imm (opcode);
14138         }
14139 }
14140
14141 /**
14142  * mono_handle_global_vregs:
14143  *
14144  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14145  * for them.
14146  */
14147 void
14148 mono_handle_global_vregs (MonoCompile *cfg)
14149 {
14150         gint32 *vreg_to_bb;
14151         MonoBasicBlock *bb;
14152         int i, pos;
14153
14154         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14155
14156 #ifdef MONO_ARCH_SIMD_INTRINSICS
14157         if (cfg->uses_simd_intrinsics)
14158                 mono_simd_simplify_indirection (cfg);
14159 #endif
14160
14161         /* Find local vregs used in more than one bb */
14162         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14163                 MonoInst *ins = bb->code;
14164                 int block_num = bb->block_num;
14165
14166                 if (cfg->verbose_level > 2)
14167                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14168
14169                 cfg->cbb = bb;
14170                 for (; ins; ins = ins->next) {
14171                         const char *spec = INS_INFO (ins->opcode);
14172                         int regtype = 0, regindex;
14173                         gint32 prev_bb;
14174
14175                         if (G_UNLIKELY (cfg->verbose_level > 2))
14176                                 mono_print_ins (ins);
14177
14178                         g_assert (ins->opcode >= MONO_CEE_LAST);
14179
14180                         for (regindex = 0; regindex < 4; regindex ++) {
14181                                 int vreg = 0;
14182
14183                                 if (regindex == 0) {
14184                                         regtype = spec [MONO_INST_DEST];
14185                                         if (regtype == ' ')
14186                                                 continue;
14187                                         vreg = ins->dreg;
14188                                 } else if (regindex == 1) {
14189                                         regtype = spec [MONO_INST_SRC1];
14190                                         if (regtype == ' ')
14191                                                 continue;
14192                                         vreg = ins->sreg1;
14193                                 } else if (regindex == 2) {
14194                                         regtype = spec [MONO_INST_SRC2];
14195                                         if (regtype == ' ')
14196                                                 continue;
14197                                         vreg = ins->sreg2;
14198                                 } else if (regindex == 3) {
14199                                         regtype = spec [MONO_INST_SRC3];
14200                                         if (regtype == ' ')
14201                                                 continue;
14202                                         vreg = ins->sreg3;
14203                                 }
14204
14205 #if SIZEOF_REGISTER == 4
14206                                 /* In the LLVM case, the long opcodes are not decomposed */
14207                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14208                                         /*
14209                                          * Since some instructions reference the original long vreg,
14210                                          * and some reference the two component vregs, it is quite hard
14211                                          * to determine when it needs to be global. So be conservative.
14212                                          */
14213                                         if (!get_vreg_to_inst (cfg, vreg)) {
14214                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14215
14216                                                 if (cfg->verbose_level > 2)
14217                                                         printf ("LONG VREG R%d made global.\n", vreg);
14218                                         }
14219
14220                                         /*
14221                                          * Make the component vregs volatile since the optimizations can
14222                                          * get confused otherwise.
14223                                          */
14224                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14225                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14226                                 }
14227 #endif
14228
14229                                 g_assert (vreg != -1);
14230
14231                                 prev_bb = vreg_to_bb [vreg];
14232                                 if (prev_bb == 0) {
14233                                         /* 0 is a valid block num */
14234                                         vreg_to_bb [vreg] = block_num + 1;
14235                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14236                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14237                                                 continue;
14238
14239                                         if (!get_vreg_to_inst (cfg, vreg)) {
14240                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14241                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14242
14243                                                 switch (regtype) {
14244                                                 case 'i':
14245                                                         if (vreg_is_ref (cfg, vreg))
14246                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14247                                                         else
14248                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14249                                                         break;
14250                                                 case 'l':
14251                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14252                                                         break;
14253                                                 case 'f':
14254                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14255                                                         break;
14256                                                 case 'v':
14257                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14258                                                         break;
14259                                                 default:
14260                                                         g_assert_not_reached ();
14261                                                 }
14262                                         }
14263
14264                                         /* Flag as having been used in more than one bb */
14265                                         vreg_to_bb [vreg] = -1;
14266                                 }
14267                         }
14268                 }
14269         }
14270
14271         /* If a variable is used in only one bblock, convert it into a local vreg */
14272         for (i = 0; i < cfg->num_varinfo; i++) {
14273                 MonoInst *var = cfg->varinfo [i];
14274                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14275
14276                 switch (var->type) {
14277                 case STACK_I4:
14278                 case STACK_OBJ:
14279                 case STACK_PTR:
14280                 case STACK_MP:
14281                 case STACK_VTYPE:
14282 #if SIZEOF_REGISTER == 8
14283                 case STACK_I8:
14284 #endif
14285 #if !defined(TARGET_X86)
14286                 /* Enabling this screws up the fp stack on x86 */
14287                 case STACK_R8:
14288 #endif
14289                         if (mono_arch_is_soft_float ())
14290                                 break;
14291
14292                         /*
14293                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14294                                 break;
14295                         */
14296
14297                         /* Arguments are implicitly global */
14298                         /* Putting R4 vars into registers doesn't work currently */
14299                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14300                         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) {
14301                                 /*
14302                                  * Make that the variable's liveness interval doesn't contain a call, since
14303                                  * that would cause the lvreg to be spilled, making the whole optimization
14304                                  * useless.
14305                                  */
14306                                 /* This is too slow for JIT compilation */
14307 #if 0
14308                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14309                                         MonoInst *ins;
14310                                         int def_index, call_index, ins_index;
14311                                         gboolean spilled = FALSE;
14312
14313                                         def_index = -1;
14314                                         call_index = -1;
14315                                         ins_index = 0;
14316                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14317                                                 const char *spec = INS_INFO (ins->opcode);
14318
14319                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14320                                                         def_index = ins_index;
14321
14322                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14323                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14324                                                         if (call_index > def_index) {
14325                                                                 spilled = TRUE;
14326                                                                 break;
14327                                                         }
14328                                                 }
14329
14330                                                 if (MONO_IS_CALL (ins))
14331                                                         call_index = ins_index;
14332
14333                                                 ins_index ++;
14334                                         }
14335
14336                                         if (spilled)
14337                                                 break;
14338                                 }
14339 #endif
14340
14341                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14342                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14343                                 var->flags |= MONO_INST_IS_DEAD;
14344                                 cfg->vreg_to_inst [var->dreg] = NULL;
14345                         }
14346                         break;
14347                 }
14348         }
14349
14350         /*
14351          * Compress the varinfo and vars tables so the liveness computation is faster and
14352          * takes up less space.
14353          */
14354         pos = 0;
14355         for (i = 0; i < cfg->num_varinfo; ++i) {
14356                 MonoInst *var = cfg->varinfo [i];
14357                 if (pos < i && cfg->locals_start == i)
14358                         cfg->locals_start = pos;
14359                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14360                         if (pos < i) {
14361                                 cfg->varinfo [pos] = cfg->varinfo [i];
14362                                 cfg->varinfo [pos]->inst_c0 = pos;
14363                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14364                                 cfg->vars [pos].idx = pos;
14365 #if SIZEOF_REGISTER == 4
14366                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14367                                         /* Modify the two component vars too */
14368                                         MonoInst *var1;
14369
14370                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14371                                         var1->inst_c0 = pos;
14372                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14373                                         var1->inst_c0 = pos;
14374                                 }
14375 #endif
14376                         }
14377                         pos ++;
14378                 }
14379         }
14380         cfg->num_varinfo = pos;
14381         if (cfg->locals_start > cfg->num_varinfo)
14382                 cfg->locals_start = cfg->num_varinfo;
14383 }
14384
14385 /*
14386  * mono_allocate_gsharedvt_vars:
14387  *
14388  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14389  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14390  */
14391 void
14392 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14393 {
14394         int i;
14395
14396         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14397
14398         for (i = 0; i < cfg->num_varinfo; ++i) {
14399                 MonoInst *ins = cfg->varinfo [i];
14400                 int idx;
14401
14402                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14403                         if (i >= cfg->locals_start) {
14404                                 /* Local */
14405                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14406                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14407                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14408                                 ins->inst_imm = idx;
14409                         } else {
14410                                 /* Arg */
14411                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14412                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14413                         }
14414                 }
14415         }
14416 }
14417
14418 /**
14419  * mono_spill_global_vars:
14420  *
14421  *   Generate spill code for variables which are not allocated to registers,
14422  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14423  * code is generated which could be optimized by the local optimization passes.
14424  */
14425 void
14426 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14427 {
14428         MonoBasicBlock *bb;
14429         char spec2 [16];
14430         int orig_next_vreg;
14431         guint32 *vreg_to_lvreg;
14432         guint32 *lvregs;
14433         guint32 i, lvregs_len;
14434         gboolean dest_has_lvreg = FALSE;
14435         MonoStackType stacktypes [128];
14436         MonoInst **live_range_start, **live_range_end;
14437         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14438
14439         *need_local_opts = FALSE;
14440
14441         memset (spec2, 0, sizeof (spec2));
14442
14443         /* FIXME: Move this function to mini.c */
14444         stacktypes ['i'] = STACK_PTR;
14445         stacktypes ['l'] = STACK_I8;
14446         stacktypes ['f'] = STACK_R8;
14447 #ifdef MONO_ARCH_SIMD_INTRINSICS
14448         stacktypes ['x'] = STACK_VTYPE;
14449 #endif
14450
14451 #if SIZEOF_REGISTER == 4
14452         /* Create MonoInsts for longs */
14453         for (i = 0; i < cfg->num_varinfo; i++) {
14454                 MonoInst *ins = cfg->varinfo [i];
14455
14456                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14457                         switch (ins->type) {
14458                         case STACK_R8:
14459                         case STACK_I8: {
14460                                 MonoInst *tree;
14461
14462                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14463                                         break;
14464
14465                                 g_assert (ins->opcode == OP_REGOFFSET);
14466
14467                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14468                                 g_assert (tree);
14469                                 tree->opcode = OP_REGOFFSET;
14470                                 tree->inst_basereg = ins->inst_basereg;
14471                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14472
14473                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14474                                 g_assert (tree);
14475                                 tree->opcode = OP_REGOFFSET;
14476                                 tree->inst_basereg = ins->inst_basereg;
14477                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14478                                 break;
14479                         }
14480                         default:
14481                                 break;
14482                         }
14483                 }
14484         }
14485 #endif
14486
14487         if (cfg->compute_gc_maps) {
14488                 /* registers need liveness info even for !non refs */
14489                 for (i = 0; i < cfg->num_varinfo; i++) {
14490                         MonoInst *ins = cfg->varinfo [i];
14491
14492                         if (ins->opcode == OP_REGVAR)
14493                                 ins->flags |= MONO_INST_GC_TRACK;
14494                 }
14495         }
14496
14497         /* FIXME: widening and truncation */
14498
14499         /*
14500          * As an optimization, when a variable allocated to the stack is first loaded into
14501          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14502          * the variable again.
14503          */
14504         orig_next_vreg = cfg->next_vreg;
14505         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14506         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14507         lvregs_len = 0;
14508
14509         /*
14510          * These arrays contain the first and last instructions accessing a given
14511          * variable.
14512          * Since we emit bblocks in the same order we process them here, and we
14513          * don't split live ranges, these will precisely describe the live range of
14514          * the variable, i.e. the instruction range where a valid value can be found
14515          * in the variables location.
14516          * The live range is computed using the liveness info computed by the liveness pass.
14517          * We can't use vmv->range, since that is an abstract live range, and we need
14518          * one which is instruction precise.
14519          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14520          */
14521         /* FIXME: Only do this if debugging info is requested */
14522         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14523         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14524         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14525         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14526
14527         /* Add spill loads/stores */
14528         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14529                 MonoInst *ins;
14530
14531                 if (cfg->verbose_level > 2)
14532                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14533
14534                 /* Clear vreg_to_lvreg array */
14535                 for (i = 0; i < lvregs_len; i++)
14536                         vreg_to_lvreg [lvregs [i]] = 0;
14537                 lvregs_len = 0;
14538
14539                 cfg->cbb = bb;
14540                 MONO_BB_FOR_EACH_INS (bb, ins) {
14541                         const char *spec = INS_INFO (ins->opcode);
14542                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14543                         gboolean store, no_lvreg;
14544                         int sregs [MONO_MAX_SRC_REGS];
14545
14546                         if (G_UNLIKELY (cfg->verbose_level > 2))
14547                                 mono_print_ins (ins);
14548
14549                         if (ins->opcode == OP_NOP)
14550                                 continue;
14551
14552                         /*
14553                          * We handle LDADDR here as well, since it can only be decomposed
14554                          * when variable addresses are known.
14555                          */
14556                         if (ins->opcode == OP_LDADDR) {
14557                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14558
14559                                 if (var->opcode == OP_VTARG_ADDR) {
14560                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14561                                         MonoInst *vtaddr = var->inst_left;
14562                                         if (vtaddr->opcode == OP_REGVAR) {
14563                                                 ins->opcode = OP_MOVE;
14564                                                 ins->sreg1 = vtaddr->dreg;
14565                                         }
14566                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14567                                                 ins->opcode = OP_LOAD_MEMBASE;
14568                                                 ins->inst_basereg = vtaddr->inst_basereg;
14569                                                 ins->inst_offset = vtaddr->inst_offset;
14570                                         } else
14571                                                 NOT_IMPLEMENTED;
14572                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14573                                         /* gsharedvt arg passed by ref */
14574                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14575
14576                                         ins->opcode = OP_LOAD_MEMBASE;
14577                                         ins->inst_basereg = var->inst_basereg;
14578                                         ins->inst_offset = var->inst_offset;
14579                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14580                                         MonoInst *load, *load2, *load3;
14581                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14582                                         int reg1, reg2, reg3;
14583                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14584                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14585
14586                                         /*
14587                                          * gsharedvt local.
14588                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14589                                          */
14590
14591                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14592
14593                                         g_assert (info_var);
14594                                         g_assert (locals_var);
14595
14596                                         /* Mark the instruction used to compute the locals var as used */
14597                                         cfg->gsharedvt_locals_var_ins = NULL;
14598
14599                                         /* Load the offset */
14600                                         if (info_var->opcode == OP_REGOFFSET) {
14601                                                 reg1 = alloc_ireg (cfg);
14602                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14603                                         } else if (info_var->opcode == OP_REGVAR) {
14604                                                 load = NULL;
14605                                                 reg1 = info_var->dreg;
14606                                         } else {
14607                                                 g_assert_not_reached ();
14608                                         }
14609                                         reg2 = alloc_ireg (cfg);
14610                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14611                                         /* Load the locals area address */
14612                                         reg3 = alloc_ireg (cfg);
14613                                         if (locals_var->opcode == OP_REGOFFSET) {
14614                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14615                                         } else if (locals_var->opcode == OP_REGVAR) {
14616                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14617                                         } else {
14618                                                 g_assert_not_reached ();
14619                                         }
14620                                         /* Compute the address */
14621                                         ins->opcode = OP_PADD;
14622                                         ins->sreg1 = reg3;
14623                                         ins->sreg2 = reg2;
14624
14625                                         mono_bblock_insert_before_ins (bb, ins, load3);
14626                                         mono_bblock_insert_before_ins (bb, load3, load2);
14627                                         if (load)
14628                                                 mono_bblock_insert_before_ins (bb, load2, load);
14629                                 } else {
14630                                         g_assert (var->opcode == OP_REGOFFSET);
14631
14632                                         ins->opcode = OP_ADD_IMM;
14633                                         ins->sreg1 = var->inst_basereg;
14634                                         ins->inst_imm = var->inst_offset;
14635                                 }
14636
14637                                 *need_local_opts = TRUE;
14638                                 spec = INS_INFO (ins->opcode);
14639                         }
14640
14641                         if (ins->opcode < MONO_CEE_LAST) {
14642                                 mono_print_ins (ins);
14643                                 g_assert_not_reached ();
14644                         }
14645
14646                         /*
14647                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14648                          * src register.
14649                          * FIXME:
14650                          */
14651                         if (MONO_IS_STORE_MEMBASE (ins)) {
14652                                 tmp_reg = ins->dreg;
14653                                 ins->dreg = ins->sreg2;
14654                                 ins->sreg2 = tmp_reg;
14655                                 store = TRUE;
14656
14657                                 spec2 [MONO_INST_DEST] = ' ';
14658                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14659                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14660                                 spec2 [MONO_INST_SRC3] = ' ';
14661                                 spec = spec2;
14662                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14663                                 g_assert_not_reached ();
14664                         else
14665                                 store = FALSE;
14666                         no_lvreg = FALSE;
14667
14668                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14669                                 printf ("\t %.3s %d", spec, ins->dreg);
14670                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14671                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14672                                         printf (" %d", sregs [srcindex]);
14673                                 printf ("\n");
14674                         }
14675
14676                         /***************/
14677                         /*    DREG     */
14678                         /***************/
14679                         regtype = spec [MONO_INST_DEST];
14680                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14681                         prev_dreg = -1;
14682
14683                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14684                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14685                                 MonoInst *store_ins;
14686                                 int store_opcode;
14687                                 MonoInst *def_ins = ins;
14688                                 int dreg = ins->dreg; /* The original vreg */
14689
14690                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14691
14692                                 if (var->opcode == OP_REGVAR) {
14693                                         ins->dreg = var->dreg;
14694                                 } 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)) {
14695                                         /*
14696                                          * Instead of emitting a load+store, use a _membase opcode.
14697                                          */
14698                                         g_assert (var->opcode == OP_REGOFFSET);
14699                                         if (ins->opcode == OP_MOVE) {
14700                                                 NULLIFY_INS (ins);
14701                                                 def_ins = NULL;
14702                                         } else {
14703                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14704                                                 ins->inst_basereg = var->inst_basereg;
14705                                                 ins->inst_offset = var->inst_offset;
14706                                                 ins->dreg = -1;
14707                                         }
14708                                         spec = INS_INFO (ins->opcode);
14709                                 } else {
14710                                         guint32 lvreg;
14711
14712                                         g_assert (var->opcode == OP_REGOFFSET);
14713
14714                                         prev_dreg = ins->dreg;
14715
14716                                         /* Invalidate any previous lvreg for this vreg */
14717                                         vreg_to_lvreg [ins->dreg] = 0;
14718
14719                                         lvreg = 0;
14720
14721                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14722                                                 regtype = 'l';
14723                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14724                                         }
14725
14726                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14727
14728 #if SIZEOF_REGISTER != 8
14729                                         if (regtype == 'l') {
14730                                                 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));
14731                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14732                                                 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));
14733                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14734                                                 def_ins = store_ins;
14735                                         }
14736                                         else
14737 #endif
14738                                         {
14739                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14740
14741                                                 /* Try to fuse the store into the instruction itself */
14742                                                 /* FIXME: Add more instructions */
14743                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14744                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14745                                                         ins->inst_imm = ins->inst_c0;
14746                                                         ins->inst_destbasereg = var->inst_basereg;
14747                                                         ins->inst_offset = var->inst_offset;
14748                                                         spec = INS_INFO (ins->opcode);
14749                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14750                                                         ins->opcode = store_opcode;
14751                                                         ins->inst_destbasereg = var->inst_basereg;
14752                                                         ins->inst_offset = var->inst_offset;
14753
14754                                                         no_lvreg = TRUE;
14755
14756                                                         tmp_reg = ins->dreg;
14757                                                         ins->dreg = ins->sreg2;
14758                                                         ins->sreg2 = tmp_reg;
14759                                                         store = TRUE;
14760
14761                                                         spec2 [MONO_INST_DEST] = ' ';
14762                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14763                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14764                                                         spec2 [MONO_INST_SRC3] = ' ';
14765                                                         spec = spec2;
14766                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14767                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14768                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14769                                                         ins->dreg = -1;
14770                                                         ins->inst_basereg = var->inst_basereg;
14771                                                         ins->inst_offset = var->inst_offset;
14772                                                         spec = INS_INFO (ins->opcode);
14773                                                 } else {
14774                                                         /* printf ("INS: "); mono_print_ins (ins); */
14775                                                         /* Create a store instruction */
14776                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14777
14778                                                         /* Insert it after the instruction */
14779                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14780
14781                                                         def_ins = store_ins;
14782
14783                                                         /*
14784                                                          * We can't assign ins->dreg to var->dreg here, since the
14785                                                          * sregs could use it. So set a flag, and do it after
14786                                                          * the sregs.
14787                                                          */
14788                                                         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)))
14789                                                                 dest_has_lvreg = TRUE;
14790                                                 }
14791                                         }
14792                                 }
14793
14794                                 if (def_ins && !live_range_start [dreg]) {
14795                                         live_range_start [dreg] = def_ins;
14796                                         live_range_start_bb [dreg] = bb;
14797                                 }
14798
14799                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14800                                         MonoInst *tmp;
14801
14802                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14803                                         tmp->inst_c1 = dreg;
14804                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14805                                 }
14806                         }
14807
14808                         /************/
14809                         /*  SREGS   */
14810                         /************/
14811                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14812                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14813                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14814                                 sreg = sregs [srcindex];
14815
14816                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14817                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14818                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14819                                         MonoInst *use_ins = ins;
14820                                         MonoInst *load_ins;
14821                                         guint32 load_opcode;
14822
14823                                         if (var->opcode == OP_REGVAR) {
14824                                                 sregs [srcindex] = var->dreg;
14825                                                 //mono_inst_set_src_registers (ins, sregs);
14826                                                 live_range_end [sreg] = use_ins;
14827                                                 live_range_end_bb [sreg] = bb;
14828
14829                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14830                                                         MonoInst *tmp;
14831
14832                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14833                                                         /* var->dreg is a hreg */
14834                                                         tmp->inst_c1 = sreg;
14835                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14836                                                 }
14837
14838                                                 continue;
14839                                         }
14840
14841                                         g_assert (var->opcode == OP_REGOFFSET);
14842
14843                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14844
14845                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14846
14847                                         if (vreg_to_lvreg [sreg]) {
14848                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14849
14850                                                 /* The variable is already loaded to an lvreg */
14851                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14852                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14853                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14854                                                 //mono_inst_set_src_registers (ins, sregs);
14855                                                 continue;
14856                                         }
14857
14858                                         /* Try to fuse the load into the instruction */
14859                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14860                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14861                                                 sregs [0] = var->inst_basereg;
14862                                                 //mono_inst_set_src_registers (ins, sregs);
14863                                                 ins->inst_offset = var->inst_offset;
14864                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14865                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14866                                                 sregs [1] = var->inst_basereg;
14867                                                 //mono_inst_set_src_registers (ins, sregs);
14868                                                 ins->inst_offset = var->inst_offset;
14869                                         } else {
14870                                                 if (MONO_IS_REAL_MOVE (ins)) {
14871                                                         ins->opcode = OP_NOP;
14872                                                         sreg = ins->dreg;
14873                                                 } else {
14874                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14875
14876                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14877
14878                                                         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) {
14879                                                                 if (var->dreg == prev_dreg) {
14880                                                                         /*
14881                                                                          * sreg refers to the value loaded by the load
14882                                                                          * emitted below, but we need to use ins->dreg
14883                                                                          * since it refers to the store emitted earlier.
14884                                                                          */
14885                                                                         sreg = ins->dreg;
14886                                                                 }
14887                                                                 g_assert (sreg != -1);
14888                                                                 vreg_to_lvreg [var->dreg] = sreg;
14889                                                                 g_assert (lvregs_len < 1024);
14890                                                                 lvregs [lvregs_len ++] = var->dreg;
14891                                                         }
14892                                                 }
14893
14894                                                 sregs [srcindex] = sreg;
14895                                                 //mono_inst_set_src_registers (ins, sregs);
14896
14897 #if SIZEOF_REGISTER != 8
14898                                                 if (regtype == 'l') {
14899                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14900                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14901                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14902                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14903                                                         use_ins = load_ins;
14904                                                 }
14905                                                 else
14906 #endif
14907                                                 {
14908 #if SIZEOF_REGISTER == 4
14909                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14910 #endif
14911                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14912                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14913                                                         use_ins = load_ins;
14914                                                 }
14915                                         }
14916
14917                                         if (var->dreg < orig_next_vreg) {
14918                                                 live_range_end [var->dreg] = use_ins;
14919                                                 live_range_end_bb [var->dreg] = bb;
14920                                         }
14921
14922                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14923                                                 MonoInst *tmp;
14924
14925                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14926                                                 tmp->inst_c1 = var->dreg;
14927                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14928                                         }
14929                                 }
14930                         }
14931                         mono_inst_set_src_registers (ins, sregs);
14932
14933                         if (dest_has_lvreg) {
14934                                 g_assert (ins->dreg != -1);
14935                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14936                                 g_assert (lvregs_len < 1024);
14937                                 lvregs [lvregs_len ++] = prev_dreg;
14938                                 dest_has_lvreg = FALSE;
14939                         }
14940
14941                         if (store) {
14942                                 tmp_reg = ins->dreg;
14943                                 ins->dreg = ins->sreg2;
14944                                 ins->sreg2 = tmp_reg;
14945                         }
14946
14947                         if (MONO_IS_CALL (ins)) {
14948                                 /* Clear vreg_to_lvreg array */
14949                                 for (i = 0; i < lvregs_len; i++)
14950                                         vreg_to_lvreg [lvregs [i]] = 0;
14951                                 lvregs_len = 0;
14952                         } else if (ins->opcode == OP_NOP) {
14953                                 ins->dreg = -1;
14954                                 MONO_INST_NULLIFY_SREGS (ins);
14955                         }
14956
14957                         if (cfg->verbose_level > 2)
14958                                 mono_print_ins_index (1, ins);
14959                 }
14960
14961                 /* Extend the live range based on the liveness info */
14962                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14963                         for (i = 0; i < cfg->num_varinfo; i ++) {
14964                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14965
14966                                 if (vreg_is_volatile (cfg, vi->vreg))
14967                                         /* The liveness info is incomplete */
14968                                         continue;
14969
14970                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14971                                         /* Live from at least the first ins of this bb */
14972                                         live_range_start [vi->vreg] = bb->code;
14973                                         live_range_start_bb [vi->vreg] = bb;
14974                                 }
14975
14976                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14977                                         /* Live at least until the last ins of this bb */
14978                                         live_range_end [vi->vreg] = bb->last_ins;
14979                                         live_range_end_bb [vi->vreg] = bb;
14980                                 }
14981                         }
14982                 }
14983         }
14984
14985         /*
14986          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14987          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14988          */
14989         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14990                 for (i = 0; i < cfg->num_varinfo; ++i) {
14991                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14992                         MonoInst *ins;
14993
14994                         if (live_range_start [vreg]) {
14995                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14996                                 ins->inst_c0 = i;
14997                                 ins->inst_c1 = vreg;
14998                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14999                         }
15000                         if (live_range_end [vreg]) {
15001                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15002                                 ins->inst_c0 = i;
15003                                 ins->inst_c1 = vreg;
15004                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15005                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15006                                 else
15007                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15008                         }
15009                 }
15010         }
15011
15012         if (cfg->gsharedvt_locals_var_ins) {
15013                 /* Nullify if unused */
15014                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15015                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15016         }
15017
15018         g_free (live_range_start);
15019         g_free (live_range_end);
15020         g_free (live_range_start_bb);
15021         g_free (live_range_end_bb);
15022 }
15023
15024 /**
15025  * FIXME:
15026  * - use 'iadd' instead of 'int_add'
15027  * - handling ovf opcodes: decompose in method_to_ir.
15028  * - unify iregs/fregs
15029  *   -> partly done, the missing parts are:
15030  *   - a more complete unification would involve unifying the hregs as well, so
15031  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15032  *     would no longer map to the machine hregs, so the code generators would need to
15033  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15034  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15035  *     fp/non-fp branches speeds it up by about 15%.
15036  * - use sext/zext opcodes instead of shifts
15037  * - add OP_ICALL
15038  * - get rid of TEMPLOADs if possible and use vregs instead
15039  * - clean up usage of OP_P/OP_ opcodes
15040  * - cleanup usage of DUMMY_USE
15041  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15042  *   stack
15043  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15044  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15045  * - make sure handle_stack_args () is called before the branch is emitted
15046  * - when the new IR is done, get rid of all unused stuff
15047  * - COMPARE/BEQ as separate instructions or unify them ?
15048  *   - keeping them separate allows specialized compare instructions like
15049  *     compare_imm, compare_membase
15050  *   - most back ends unify fp compare+branch, fp compare+ceq
15051  * - integrate mono_save_args into inline_method
15052  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15053  * - handle long shift opts on 32 bit platforms somehow: they require
15054  *   3 sregs (2 for arg1 and 1 for arg2)
15055  * - make byref a 'normal' type.
15056  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15057  *   variable if needed.
15058  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15059  *   like inline_method.
15060  * - remove inlining restrictions
15061  * - fix LNEG and enable cfold of INEG
15062  * - generalize x86 optimizations like ldelema as a peephole optimization
15063  * - add store_mem_imm for amd64
15064  * - optimize the loading of the interruption flag in the managed->native wrappers
15065  * - avoid special handling of OP_NOP in passes
15066  * - move code inserting instructions into one function/macro.
15067  * - try a coalescing phase after liveness analysis
15068  * - add float -> vreg conversion + local optimizations on !x86
15069  * - figure out how to handle decomposed branches during optimizations, ie.
15070  *   compare+branch, op_jump_table+op_br etc.
15071  * - promote RuntimeXHandles to vregs
15072  * - vtype cleanups:
15073  *   - add a NEW_VARLOADA_VREG macro
15074  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15075  *   accessing vtype fields.
15076  * - get rid of I8CONST on 64 bit platforms
15077  * - dealing with the increase in code size due to branches created during opcode
15078  *   decomposition:
15079  *   - use extended basic blocks
15080  *     - all parts of the JIT
15081  *     - handle_global_vregs () && local regalloc
15082  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15083  * - sources of increase in code size:
15084  *   - vtypes
15085  *   - long compares
15086  *   - isinst and castclass
15087  *   - lvregs not allocated to global registers even if used multiple times
15088  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15089  *   meaningful.
15090  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15091  * - add all micro optimizations from the old JIT
15092  * - put tree optimizations into the deadce pass
15093  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15094  *   specific function.
15095  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15096  *   fcompare + branchCC.
15097  * - create a helper function for allocating a stack slot, taking into account
15098  *   MONO_CFG_HAS_SPILLUP.
15099  * - merge r68207.
15100  * - merge the ia64 switch changes.
15101  * - optimize mono_regstate2_alloc_int/float.
15102  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15103  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15104  *   parts of the tree could be separated by other instructions, killing the tree
15105  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15106  *   instructions if the result of the load is used multiple times ?
15107  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15108  * - LAST MERGE: 108395.
15109  * - when returning vtypes in registers, generate IR and append it to the end of the
15110  *   last bb instead of doing it in the epilog.
15111  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15112  */
15113
15114 /*
15115
15116 NOTES
15117 -----
15118
15119 - When to decompose opcodes:
15120   - earlier: this makes some optimizations hard to implement, since the low level IR
15121   no longer contains the neccessary information. But it is easier to do.
15122   - later: harder to implement, enables more optimizations.
15123 - Branches inside bblocks:
15124   - created when decomposing complex opcodes.
15125     - branches to another bblock: harmless, but not tracked by the branch
15126       optimizations, so need to branch to a label at the start of the bblock.
15127     - branches to inside the same bblock: very problematic, trips up the local
15128       reg allocator. Can be fixed by spitting the current bblock, but that is a
15129       complex operation, since some local vregs can become global vregs etc.
15130 - Local/global vregs:
15131   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15132     local register allocator.
15133   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15134     structure, created by mono_create_var (). Assigned to hregs or the stack by
15135     the global register allocator.
15136 - When to do optimizations like alu->alu_imm:
15137   - earlier -> saves work later on since the IR will be smaller/simpler
15138   - later -> can work on more instructions
15139 - Handling of valuetypes:
15140   - When a vtype is pushed on the stack, a new temporary is created, an
15141     instruction computing its address (LDADDR) is emitted and pushed on
15142     the stack. Need to optimize cases when the vtype is used immediately as in
15143     argument passing, stloc etc.
15144 - Instead of the to_end stuff in the old JIT, simply call the function handling
15145   the values on the stack before emitting the last instruction of the bb.
15146 */
15147
15148 #endif /* DISABLE_JIT */