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
7265                 /* This gets rid of the newly added bblocks */
7266                 cfg->cbb = prev_cbb;
7267         }
7268         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7269         return 0;
7270 }
7271
7272 /*
7273  * Some of these comments may well be out-of-date.
7274  * Design decisions: we do a single pass over the IL code (and we do bblock
7275  * splitting/merging in the few cases when it's required: a back jump to an IL
7276  * address that was not already seen as bblock starting point).
7277  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7278  * Complex operations are decomposed in simpler ones right away. We need to let the
7279  * arch-specific code peek and poke inside this process somehow (except when the
7280  * optimizations can take advantage of the full semantic info of coarse opcodes).
7281  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7282  * MonoInst->opcode initially is the IL opcode or some simplification of that
7283  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7284  * opcode with value bigger than OP_LAST.
7285  * At this point the IR can be handed over to an interpreter, a dumb code generator
7286  * or to the optimizing code generator that will translate it to SSA form.
7287  *
7288  * Profiling directed optimizations.
7289  * We may compile by default with few or no optimizations and instrument the code
7290  * or the user may indicate what methods to optimize the most either in a config file
7291  * or through repeated runs where the compiler applies offline the optimizations to
7292  * each method and then decides if it was worth it.
7293  */
7294
7295 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7296 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7297 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7298 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7299 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7300 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7301 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7302 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7303
7304 /* offset from br.s -> br like opcodes */
7305 #define BIG_BRANCH_OFFSET 13
7306
7307 static gboolean
7308 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7309 {
7310         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7311
7312         return b == NULL || b == bb;
7313 }
7314
7315 static int
7316 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7317 {
7318         unsigned char *ip = start;
7319         unsigned char *target;
7320         int i;
7321         guint cli_addr;
7322         MonoBasicBlock *bblock;
7323         const MonoOpcode *opcode;
7324
7325         while (ip < end) {
7326                 cli_addr = ip - start;
7327                 i = mono_opcode_value ((const guint8 **)&ip, end);
7328                 if (i < 0)
7329                         UNVERIFIED;
7330                 opcode = &mono_opcodes [i];
7331                 switch (opcode->argument) {
7332                 case MonoInlineNone:
7333                         ip++;
7334                         break;
7335                 case MonoInlineString:
7336                 case MonoInlineType:
7337                 case MonoInlineField:
7338                 case MonoInlineMethod:
7339                 case MonoInlineTok:
7340                 case MonoInlineSig:
7341                 case MonoShortInlineR:
7342                 case MonoInlineI:
7343                         ip += 5;
7344                         break;
7345                 case MonoInlineVar:
7346                         ip += 3;
7347                         break;
7348                 case MonoShortInlineVar:
7349                 case MonoShortInlineI:
7350                         ip += 2;
7351                         break;
7352                 case MonoShortInlineBrTarget:
7353                         target = start + cli_addr + 2 + (signed char)ip [1];
7354                         GET_BBLOCK (cfg, bblock, target);
7355                         ip += 2;
7356                         if (ip < end)
7357                                 GET_BBLOCK (cfg, bblock, ip);
7358                         break;
7359                 case MonoInlineBrTarget:
7360                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7361                         GET_BBLOCK (cfg, bblock, target);
7362                         ip += 5;
7363                         if (ip < end)
7364                                 GET_BBLOCK (cfg, bblock, ip);
7365                         break;
7366                 case MonoInlineSwitch: {
7367                         guint32 n = read32 (ip + 1);
7368                         guint32 j;
7369                         ip += 5;
7370                         cli_addr += 5 + 4 * n;
7371                         target = start + cli_addr;
7372                         GET_BBLOCK (cfg, bblock, target);
7373
7374                         for (j = 0; j < n; ++j) {
7375                                 target = start + cli_addr + (gint32)read32 (ip);
7376                                 GET_BBLOCK (cfg, bblock, target);
7377                                 ip += 4;
7378                         }
7379                         break;
7380                 }
7381                 case MonoInlineR:
7382                 case MonoInlineI8:
7383                         ip += 9;
7384                         break;
7385                 default:
7386                         g_assert_not_reached ();
7387                 }
7388
7389                 if (i == CEE_THROW) {
7390                         unsigned char *bb_start = ip - 1;
7391
7392                         /* Find the start of the bblock containing the throw */
7393                         bblock = NULL;
7394                         while ((bb_start >= start) && !bblock) {
7395                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7396                                 bb_start --;
7397                         }
7398                         if (bblock)
7399                                 bblock->out_of_line = 1;
7400                 }
7401         }
7402         return 0;
7403 unverified:
7404 exception_exit:
7405         *pos = ip;
7406         return 1;
7407 }
7408
7409 static inline MonoMethod *
7410 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7411 {
7412         MonoMethod *method;
7413
7414         mono_error_init (error);
7415
7416         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7417                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7418                 if (context) {
7419                         method = mono_class_inflate_generic_method_checked (method, context, error);
7420                 }
7421         } else {
7422                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7423         }
7424
7425         return method;
7426 }
7427
7428 static inline MonoMethod *
7429 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7430 {
7431         MonoError error;
7432         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7433
7434         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7435                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7436                 method = NULL;
7437         }
7438
7439         if (!method && !cfg)
7440                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7441
7442         return method;
7443 }
7444
7445 static inline MonoClass*
7446 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7447 {
7448         MonoError error;
7449         MonoClass *klass;
7450
7451         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7452                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7453                 if (context) {
7454                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7455                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7456                 }
7457         } else {
7458                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7459                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7460         }
7461         if (klass)
7462                 mono_class_init (klass);
7463         return klass;
7464 }
7465
7466 static inline MonoMethodSignature*
7467 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7468 {
7469         MonoMethodSignature *fsig;
7470
7471         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7472                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7473         } else {
7474                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7475         }
7476         if (context) {
7477                 MonoError error;
7478                 fsig = mono_inflate_generic_signature(fsig, context, &error);
7479                 // FIXME:
7480                 g_assert(mono_error_ok(&error));
7481         }
7482         return fsig;
7483 }
7484
7485 static MonoMethod*
7486 throw_exception (void)
7487 {
7488         static MonoMethod *method = NULL;
7489
7490         if (!method) {
7491                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7492                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7493         }
7494         g_assert (method);
7495         return method;
7496 }
7497
7498 static void
7499 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7500 {
7501         MonoMethod *thrower = throw_exception ();
7502         MonoInst *args [1];
7503
7504         EMIT_NEW_PCONST (cfg, args [0], ex);
7505         mono_emit_method_call (cfg, thrower, args, NULL);
7506 }
7507
7508 /*
7509  * Return the original method is a wrapper is specified. We can only access
7510  * the custom attributes from the original method.
7511  */
7512 static MonoMethod*
7513 get_original_method (MonoMethod *method)
7514 {
7515         if (method->wrapper_type == MONO_WRAPPER_NONE)
7516                 return method;
7517
7518         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7519         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7520                 return NULL;
7521
7522         /* in other cases we need to find the original method */
7523         return mono_marshal_method_from_wrapper (method);
7524 }
7525
7526 static void
7527 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7528 {
7529         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7530         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7531         if (ex)
7532                 emit_throw_exception (cfg, ex);
7533 }
7534
7535 static void
7536 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7537 {
7538         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7539         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7540         if (ex)
7541                 emit_throw_exception (cfg, ex);
7542 }
7543
7544 /*
7545  * Check that the IL instructions at ip are the array initialization
7546  * sequence and return the pointer to the data and the size.
7547  */
7548 static const char*
7549 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7550 {
7551         /*
7552          * newarr[System.Int32]
7553          * dup
7554          * ldtoken field valuetype ...
7555          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7556          */
7557         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7558                 MonoError error;
7559                 guint32 token = read32 (ip + 7);
7560                 guint32 field_token = read32 (ip + 2);
7561                 guint32 field_index = field_token & 0xffffff;
7562                 guint32 rva;
7563                 const char *data_ptr;
7564                 int size = 0;
7565                 MonoMethod *cmethod;
7566                 MonoClass *dummy_class;
7567                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7568                 int dummy_align;
7569
7570                 if (!field) {
7571                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7572                         return NULL;
7573                 }
7574
7575                 *out_field_token = field_token;
7576
7577                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7578                 if (!cmethod)
7579                         return NULL;
7580                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7581                         return NULL;
7582                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7583                 case MONO_TYPE_BOOLEAN:
7584                 case MONO_TYPE_I1:
7585                 case MONO_TYPE_U1:
7586                         size = 1; break;
7587                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7588 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7589                 case MONO_TYPE_CHAR:
7590                 case MONO_TYPE_I2:
7591                 case MONO_TYPE_U2:
7592                         size = 2; break;
7593                 case MONO_TYPE_I4:
7594                 case MONO_TYPE_U4:
7595                 case MONO_TYPE_R4:
7596                         size = 4; break;
7597                 case MONO_TYPE_R8:
7598                 case MONO_TYPE_I8:
7599                 case MONO_TYPE_U8:
7600                         size = 8; break;
7601 #endif
7602                 default:
7603                         return NULL;
7604                 }
7605                 size *= len;
7606                 if (size > mono_type_size (field->type, &dummy_align))
7607                     return NULL;
7608                 *out_size = size;
7609                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7610                 if (!image_is_dynamic (method->klass->image)) {
7611                         field_index = read32 (ip + 2) & 0xffffff;
7612                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7613                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7614                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7615                         /* for aot code we do the lookup on load */
7616                         if (aot && data_ptr)
7617                                 return (const char *)GUINT_TO_POINTER (rva);
7618                 } else {
7619                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7620                         g_assert (!aot);
7621                         data_ptr = mono_field_get_data (field);
7622                 }
7623                 return data_ptr;
7624         }
7625         return NULL;
7626 }
7627
7628 static void
7629 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7630 {
7631         MonoError error;
7632         char *method_fname = mono_method_full_name (method, TRUE);
7633         char *method_code;
7634         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7635
7636         if (!header) {
7637                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7638                 mono_error_cleanup (&error);
7639         } else if (header->code_size == 0)
7640                 method_code = g_strdup ("method body is empty.");
7641         else
7642                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7643         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7644         g_free (method_fname);
7645         g_free (method_code);
7646         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7647 }
7648
7649 static void
7650 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7651 {
7652         MonoInst *ins;
7653         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7654         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7655                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7656                 /* Optimize reg-reg moves away */
7657                 /*
7658                  * Can't optimize other opcodes, since sp[0] might point to
7659                  * the last ins of a decomposed opcode.
7660                  */
7661                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7662         } else {
7663                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7664         }
7665 }
7666
7667 /*
7668  * ldloca inhibits many optimizations so try to get rid of it in common
7669  * cases.
7670  */
7671 static inline unsigned char *
7672 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7673 {
7674         int local, token;
7675         MonoClass *klass;
7676         MonoType *type;
7677
7678         if (size == 1) {
7679                 local = ip [1];
7680                 ip += 2;
7681         } else {
7682                 local = read16 (ip + 2);
7683                 ip += 4;
7684         }
7685
7686         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7687                 /* From the INITOBJ case */
7688                 token = read32 (ip + 2);
7689                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7690                 CHECK_TYPELOAD (klass);
7691                 type = mini_get_underlying_type (&klass->byval_arg);
7692                 emit_init_local (cfg, local, type, TRUE);
7693                 return ip + 6;
7694         }
7695  exception_exit:
7696         return NULL;
7697 }
7698
7699 static MonoInst*
7700 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7701 {
7702         MonoInst *icall_args [16];
7703         MonoInst *call_target, *ins, *vtable_ins;
7704         int arg_reg, this_reg, vtable_reg;
7705         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7706         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7707         gboolean variant_iface = FALSE;
7708         guint32 slot;
7709         int offset;
7710
7711         /*
7712          * In llvm-only mode, vtables contain function descriptors instead of
7713          * method addresses/trampolines.
7714          */
7715         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7716
7717         if (is_iface)
7718                 slot = mono_method_get_imt_slot (cmethod);
7719         else
7720                 slot = mono_method_get_vtable_index (cmethod);
7721
7722         this_reg = sp [0]->dreg;
7723
7724         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7725                 variant_iface = TRUE;
7726
7727         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7728                 /*
7729                  * The simplest case, a normal virtual call.
7730                  */
7731                 int slot_reg = alloc_preg (cfg);
7732                 int addr_reg = alloc_preg (cfg);
7733                 int arg_reg = alloc_preg (cfg);
7734                 MonoBasicBlock *non_null_bb;
7735
7736                 vtable_reg = alloc_preg (cfg);
7737                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7738                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7739
7740                 /* Load the vtable slot, which contains a function descriptor. */
7741                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7742
7743                 NEW_BBLOCK (cfg, non_null_bb);
7744
7745                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7746                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7747                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7748
7749                 /* Slow path */
7750                 // FIXME: Make the wrapper use the preserveall cconv
7751                 // FIXME: Use one icall per slot for small slot numbers ?
7752                 icall_args [0] = vtable_ins;
7753                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7754                 /* Make the icall return the vtable slot value to save some code space */
7755                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7756                 ins->dreg = slot_reg;
7757                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7758
7759                 /* Fastpath */
7760                 MONO_START_BB (cfg, non_null_bb);
7761                 /* Load the address + arg from the vtable slot */
7762                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7763                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7764
7765                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7766         }
7767
7768         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7769                 /*
7770                  * A simple interface call
7771                  *
7772                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7773                  * The imt slot contains a function descriptor for a runtime function + arg.
7774                  */
7775                 int slot_reg = alloc_preg (cfg);
7776                 int addr_reg = alloc_preg (cfg);
7777                 int arg_reg = alloc_preg (cfg);
7778                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7779
7780                 vtable_reg = alloc_preg (cfg);
7781                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7782                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7783
7784                 /*
7785                  * The slot is already initialized when the vtable is created so there is no need
7786                  * to check it here.
7787                  */
7788
7789                 /* Load the imt slot, which contains a function descriptor. */
7790                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7791
7792                 /* Load the address + arg of the imt thunk from the imt slot */
7793                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7794                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7795                 /*
7796                  * IMT thunks in llvm-only mode are C functions which take an info argument
7797                  * plus the imt method and return the ftndesc to call.
7798                  */
7799                 icall_args [0] = thunk_arg_ins;
7800                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7801                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7802                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7803
7804                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7805         }
7806
7807         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7808                 /*
7809                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7810                  * dynamically extended as more instantiations are discovered.
7811                  * This handles generic virtual methods both on classes and interfaces.
7812                  */
7813                 int slot_reg = alloc_preg (cfg);
7814                 int addr_reg = alloc_preg (cfg);
7815                 int arg_reg = alloc_preg (cfg);
7816                 int ftndesc_reg = alloc_preg (cfg);
7817                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7818                 MonoBasicBlock *slowpath_bb, *end_bb;
7819
7820                 NEW_BBLOCK (cfg, slowpath_bb);
7821                 NEW_BBLOCK (cfg, end_bb);
7822
7823                 vtable_reg = alloc_preg (cfg);
7824                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7825                 if (is_iface)
7826                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7827                 else
7828                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7829
7830                 /* Load the slot, which contains a function descriptor. */
7831                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7832
7833                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7834                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7835                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7836                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7837
7838                 /* Fastpath */
7839                 /* Same as with iface calls */
7840                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7841                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7842                 icall_args [0] = thunk_arg_ins;
7843                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7844                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7845                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7846                 ftndesc_ins->dreg = ftndesc_reg;
7847                 /*
7848                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7849                  * they don't know about yet. Fall back to the slowpath in that case.
7850                  */
7851                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7852                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7853
7854                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7855
7856                 /* Slowpath */
7857                 MONO_START_BB (cfg, slowpath_bb);
7858                 icall_args [0] = vtable_ins;
7859                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7860                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7861                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7862                 if (is_iface)
7863                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7864                 else
7865                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7866                 ftndesc_ins->dreg = ftndesc_reg;
7867                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7868
7869                 /* Common case */
7870                 MONO_START_BB (cfg, end_bb);
7871                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7872         }
7873
7874         /*
7875          * Non-optimized cases
7876          */
7877         icall_args [0] = sp [0];
7878         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7879
7880         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7881                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7882
7883         arg_reg = alloc_preg (cfg);
7884         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7885         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7886
7887         g_assert (is_gsharedvt);
7888         if (is_iface)
7889                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7890         else
7891                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7892
7893         /*
7894          * Pass the extra argument even if the callee doesn't receive it, most
7895          * calling conventions allow this.
7896          */
7897         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7898 }
7899
7900 static gboolean
7901 is_exception_class (MonoClass *klass)
7902 {
7903         while (klass) {
7904                 if (klass == mono_defaults.exception_class)
7905                         return TRUE;
7906                 klass = klass->parent;
7907         }
7908         return FALSE;
7909 }
7910
7911 /*
7912  * is_jit_optimizer_disabled:
7913  *
7914  *   Determine whenever M's assembly has a DebuggableAttribute with the
7915  * IsJITOptimizerDisabled flag set.
7916  */
7917 static gboolean
7918 is_jit_optimizer_disabled (MonoMethod *m)
7919 {
7920         MonoError error;
7921         MonoAssembly *ass = m->klass->image->assembly;
7922         MonoCustomAttrInfo* attrs;
7923         MonoClass *klass;
7924         int i;
7925         gboolean val = FALSE;
7926
7927         g_assert (ass);
7928         if (ass->jit_optimizer_disabled_inited)
7929                 return ass->jit_optimizer_disabled;
7930
7931         klass = mono_class_try_get_debuggable_attribute_class ();
7932
7933         if (!klass) {
7934                 /* Linked away */
7935                 ass->jit_optimizer_disabled = FALSE;
7936                 mono_memory_barrier ();
7937                 ass->jit_optimizer_disabled_inited = TRUE;
7938                 return FALSE;
7939         }
7940
7941         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7942         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7943         if (attrs) {
7944                 for (i = 0; i < attrs->num_attrs; ++i) {
7945                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7946                         const gchar *p;
7947                         MonoMethodSignature *sig;
7948
7949                         if (!attr->ctor || attr->ctor->klass != klass)
7950                                 continue;
7951                         /* Decode the attribute. See reflection.c */
7952                         p = (const char*)attr->data;
7953                         g_assert (read16 (p) == 0x0001);
7954                         p += 2;
7955
7956                         // FIXME: Support named parameters
7957                         sig = mono_method_signature (attr->ctor);
7958                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7959                                 continue;
7960                         /* Two boolean arguments */
7961                         p ++;
7962                         val = *p;
7963                 }
7964                 mono_custom_attrs_free (attrs);
7965         }
7966
7967         ass->jit_optimizer_disabled = val;
7968         mono_memory_barrier ();
7969         ass->jit_optimizer_disabled_inited = TRUE;
7970
7971         return val;
7972 }
7973
7974 static gboolean
7975 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7976 {
7977         gboolean supported_tail_call;
7978         int i;
7979
7980         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7981
7982         for (i = 0; i < fsig->param_count; ++i) {
7983                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7984                         /* These can point to the current method's stack */
7985                         supported_tail_call = FALSE;
7986         }
7987         if (fsig->hasthis && cmethod->klass->valuetype)
7988                 /* this might point to the current method's stack */
7989                 supported_tail_call = FALSE;
7990         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7991                 supported_tail_call = FALSE;
7992         if (cfg->method->save_lmf)
7993                 supported_tail_call = FALSE;
7994         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7995                 supported_tail_call = FALSE;
7996         if (call_opcode != CEE_CALL)
7997                 supported_tail_call = FALSE;
7998
7999         /* Debugging support */
8000 #if 0
8001         if (supported_tail_call) {
8002                 if (!mono_debug_count ())
8003                         supported_tail_call = FALSE;
8004         }
8005 #endif
8006
8007         return supported_tail_call;
8008 }
8009
8010 /*
8011  * handle_ctor_call:
8012  *
8013  *   Handle calls made to ctors from NEWOBJ opcodes.
8014  */
8015 static void
8016 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8017                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8018 {
8019         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8020
8021         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8022                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8023                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8024                         mono_class_vtable (cfg->domain, cmethod->klass);
8025                         CHECK_TYPELOAD (cmethod->klass);
8026
8027                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8028                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8029                 } else {
8030                         if (context_used) {
8031                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8032                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8033                         } else {
8034                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8035
8036                                 CHECK_TYPELOAD (cmethod->klass);
8037                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8038                         }
8039                 }
8040         }
8041
8042         /* Avoid virtual calls to ctors if possible */
8043         if (mono_class_is_marshalbyref (cmethod->klass))
8044                 callvirt_this_arg = sp [0];
8045
8046         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8047                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8048                 CHECK_CFG_EXCEPTION;
8049         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8050                            mono_method_check_inlining (cfg, cmethod) &&
8051                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8052                 int costs;
8053
8054                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8055                         cfg->real_offset += 5;
8056
8057                         *inline_costs += costs - 5;
8058                 } else {
8059                         INLINE_FAILURE ("inline failure");
8060                         // FIXME-VT: Clean this up
8061                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8062                                 GSHAREDVT_FAILURE(*ip);
8063                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8064                 }
8065         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8066                 MonoInst *addr;
8067
8068                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8069
8070                 if (cfg->llvm_only) {
8071                         // FIXME: Avoid initializing vtable_arg
8072                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8073                 } else {
8074                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8075                 }
8076         } else if (context_used &&
8077                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8078                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8079                 MonoInst *cmethod_addr;
8080
8081                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8082
8083                 if (cfg->llvm_only) {
8084                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8085                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8086                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8087                 } else {
8088                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8089                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8090
8091                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8092                 }
8093         } else {
8094                 INLINE_FAILURE ("ctor call");
8095                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8096                                                                                   callvirt_this_arg, NULL, vtable_arg);
8097         }
8098  exception_exit:
8099         return;
8100 }
8101
8102 static void
8103 emit_setret (MonoCompile *cfg, MonoInst *val)
8104 {
8105         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8106         MonoInst *ins;
8107
8108         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8109                 MonoInst *ret_addr;
8110
8111                 if (!cfg->vret_addr) {
8112                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8113                 } else {
8114                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8115
8116                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8117                         ins->klass = mono_class_from_mono_type (ret_type);
8118                 }
8119         } else {
8120 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8121                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8122                         MonoInst *iargs [1];
8123                         MonoInst *conv;
8124
8125                         iargs [0] = val;
8126                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8127                         mono_arch_emit_setret (cfg, cfg->method, conv);
8128                 } else {
8129                         mono_arch_emit_setret (cfg, cfg->method, val);
8130                 }
8131 #else
8132                 mono_arch_emit_setret (cfg, cfg->method, val);
8133 #endif
8134         }
8135 }
8136
8137 /*
8138  * mono_method_to_ir:
8139  *
8140  *   Translate the .net IL into linear IR.
8141  */
8142 int
8143 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8144                    MonoInst *return_var, MonoInst **inline_args,
8145                    guint inline_offset, gboolean is_virtual_call)
8146 {
8147         MonoError error;
8148         MonoInst *ins, **sp, **stack_start;
8149         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8150         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8151         MonoMethod *cmethod, *method_definition;
8152         MonoInst **arg_array;
8153         MonoMethodHeader *header;
8154         MonoImage *image;
8155         guint32 token, ins_flag;
8156         MonoClass *klass;
8157         MonoClass *constrained_class = NULL;
8158         unsigned char *ip, *end, *target, *err_pos;
8159         MonoMethodSignature *sig;
8160         MonoGenericContext *generic_context = NULL;
8161         MonoGenericContainer *generic_container = NULL;
8162         MonoType **param_types;
8163         int i, n, start_new_bblock, dreg;
8164         int num_calls = 0, inline_costs = 0;
8165         int breakpoint_id = 0;
8166         guint num_args;
8167         GSList *class_inits = NULL;
8168         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8169         int context_used;
8170         gboolean init_locals, seq_points, skip_dead_blocks;
8171         gboolean sym_seq_points = FALSE;
8172         MonoDebugMethodInfo *minfo;
8173         MonoBitSet *seq_point_locs = NULL;
8174         MonoBitSet *seq_point_set_locs = NULL;
8175
8176         cfg->disable_inline = is_jit_optimizer_disabled (method);
8177
8178         /* serialization and xdomain stuff may need access to private fields and methods */
8179         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8180         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8181         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8182         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8183         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8184         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8185
8186         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8187         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8188         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8189         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8190         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8191
8192         image = method->klass->image;
8193         header = mono_method_get_header_checked (method, &cfg->error);
8194         if (!header) {
8195                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8196                 goto exception_exit;
8197         }
8198         generic_container = mono_method_get_generic_container (method);
8199         sig = mono_method_signature (method);
8200         num_args = sig->hasthis + sig->param_count;
8201         ip = (unsigned char*)header->code;
8202         cfg->cil_start = ip;
8203         end = ip + header->code_size;
8204         cfg->stat_cil_code_size += header->code_size;
8205
8206         seq_points = cfg->gen_seq_points && cfg->method == method;
8207
8208         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8209                 /* We could hit a seq point before attaching to the JIT (#8338) */
8210                 seq_points = FALSE;
8211         }
8212
8213         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8214                 minfo = mono_debug_lookup_method (method);
8215                 if (minfo) {
8216                         MonoSymSeqPoint *sps;
8217                         int i, n_il_offsets;
8218
8219                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8220                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8221                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8222                         sym_seq_points = TRUE;
8223                         for (i = 0; i < n_il_offsets; ++i) {
8224                                 if (sps [i].il_offset < header->code_size)
8225                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8226                         }
8227                         g_free (sps);
8228                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8229                         /* Methods without line number info like auto-generated property accessors */
8230                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8231                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8232                         sym_seq_points = TRUE;
8233                 }
8234         }
8235
8236         /*
8237          * Methods without init_locals set could cause asserts in various passes
8238          * (#497220). To work around this, we emit dummy initialization opcodes
8239          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8240          * on some platforms.
8241          */
8242         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8243                 init_locals = header->init_locals;
8244         else
8245                 init_locals = TRUE;
8246
8247         method_definition = method;
8248         while (method_definition->is_inflated) {
8249                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8250                 method_definition = imethod->declaring;
8251         }
8252
8253         /* SkipVerification is not allowed if core-clr is enabled */
8254         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8255                 dont_verify = TRUE;
8256                 dont_verify_stloc = TRUE;
8257         }
8258
8259         if (sig->is_inflated)
8260                 generic_context = mono_method_get_context (method);
8261         else if (generic_container)
8262                 generic_context = &generic_container->context;
8263         cfg->generic_context = generic_context;
8264
8265         if (!cfg->gshared)
8266                 g_assert (!sig->has_type_parameters);
8267
8268         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8269                 g_assert (method->is_inflated);
8270                 g_assert (mono_method_get_context (method)->method_inst);
8271         }
8272         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8273                 g_assert (sig->generic_param_count);
8274
8275         if (cfg->method == method) {
8276                 cfg->real_offset = 0;
8277         } else {
8278                 cfg->real_offset = inline_offset;
8279         }
8280
8281         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8282         cfg->cil_offset_to_bb_len = header->code_size;
8283
8284         cfg->current_method = method;
8285
8286         if (cfg->verbose_level > 2)
8287                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8288
8289         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8290         if (sig->hasthis)
8291                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8292         for (n = 0; n < sig->param_count; ++n)
8293                 param_types [n + sig->hasthis] = sig->params [n];
8294         cfg->arg_types = param_types;
8295
8296         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8297         if (cfg->method == method) {
8298
8299                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8300                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8301
8302                 /* ENTRY BLOCK */
8303                 NEW_BBLOCK (cfg, start_bblock);
8304                 cfg->bb_entry = start_bblock;
8305                 start_bblock->cil_code = NULL;
8306                 start_bblock->cil_length = 0;
8307
8308                 /* EXIT BLOCK */
8309                 NEW_BBLOCK (cfg, end_bblock);
8310                 cfg->bb_exit = end_bblock;
8311                 end_bblock->cil_code = NULL;
8312                 end_bblock->cil_length = 0;
8313                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8314                 g_assert (cfg->num_bblocks == 2);
8315
8316                 arg_array = cfg->args;
8317
8318                 if (header->num_clauses) {
8319                         cfg->spvars = g_hash_table_new (NULL, NULL);
8320                         cfg->exvars = g_hash_table_new (NULL, NULL);
8321                 }
8322                 /* handle exception clauses */
8323                 for (i = 0; i < header->num_clauses; ++i) {
8324                         MonoBasicBlock *try_bb;
8325                         MonoExceptionClause *clause = &header->clauses [i];
8326                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8327
8328                         try_bb->real_offset = clause->try_offset;
8329                         try_bb->try_start = TRUE;
8330                         try_bb->region = ((i + 1) << 8) | clause->flags;
8331                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8332                         tblock->real_offset = clause->handler_offset;
8333                         tblock->flags |= BB_EXCEPTION_HANDLER;
8334
8335                         /*
8336                          * Linking the try block with the EH block hinders inlining as we won't be able to
8337                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8338                          */
8339                         if (COMPILE_LLVM (cfg))
8340                                 link_bblock (cfg, try_bb, tblock);
8341
8342                         if (*(ip + clause->handler_offset) == CEE_POP)
8343                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8344
8345                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8346                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8347                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8348                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8349                                 MONO_ADD_INS (tblock, ins);
8350
8351                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8352                                         /* finally clauses already have a seq point */
8353                                         /* seq points for filter clauses are emitted below */
8354                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8355                                         MONO_ADD_INS (tblock, ins);
8356                                 }
8357
8358                                 /* todo: is a fault block unsafe to optimize? */
8359                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8360                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8361                         }
8362
8363                         /*printf ("clause try IL_%04x to IL_%04x handler %d at IL_%04x to IL_%04x\n", clause->try_offset, clause->try_offset + clause->try_len, clause->flags, clause->handler_offset, clause->handler_offset + clause->handler_len);
8364                           while (p < end) {
8365                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8366                           }*/
8367                         /* catch and filter blocks get the exception object on the stack */
8368                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8369                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8370
8371                                 /* mostly like handle_stack_args (), but just sets the input args */
8372                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8373                                 tblock->in_scount = 1;
8374                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8375                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8376
8377                                 cfg->cbb = tblock;
8378
8379 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8380                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8381                                 if (!cfg->compile_llvm) {
8382                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8383                                         ins->dreg = tblock->in_stack [0]->dreg;
8384                                         MONO_ADD_INS (tblock, ins);
8385                                 }
8386 #else
8387                                 MonoInst *dummy_use;
8388
8389                                 /*
8390                                  * Add a dummy use for the exvar so its liveness info will be
8391                                  * correct.
8392                                  */
8393                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8394 #endif
8395
8396                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8397                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8398                                         MONO_ADD_INS (tblock, ins);
8399                                 }
8400
8401                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8402                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8403                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8404                                         tblock->real_offset = clause->data.filter_offset;
8405                                         tblock->in_scount = 1;
8406                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8407                                         /* The filter block shares the exvar with the handler block */
8408                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8409                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8410                                         MONO_ADD_INS (tblock, ins);
8411                                 }
8412                         }
8413
8414                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8415                                         clause->data.catch_class &&
8416                                         cfg->gshared &&
8417                                         mono_class_check_context_used (clause->data.catch_class)) {
8418                                 /*
8419                                  * In shared generic code with catch
8420                                  * clauses containing type variables
8421                                  * the exception handling code has to
8422                                  * be able to get to the rgctx.
8423                                  * Therefore we have to make sure that
8424                                  * the vtable/mrgctx argument (for
8425                                  * static or generic methods) or the
8426                                  * "this" argument (for non-static
8427                                  * methods) are live.
8428                                  */
8429                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8430                                                 mini_method_get_context (method)->method_inst ||
8431                                                 method->klass->valuetype) {
8432                                         mono_get_vtable_var (cfg);
8433                                 } else {
8434                                         MonoInst *dummy_use;
8435
8436                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8437                                 }
8438                         }
8439                 }
8440         } else {
8441                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8442                 cfg->cbb = start_bblock;
8443                 cfg->args = arg_array;
8444                 mono_save_args (cfg, sig, inline_args);
8445         }
8446
8447         /* FIRST CODE BLOCK */
8448         NEW_BBLOCK (cfg, tblock);
8449         tblock->cil_code = ip;
8450         cfg->cbb = tblock;
8451         cfg->ip = ip;
8452
8453         ADD_BBLOCK (cfg, tblock);
8454
8455         if (cfg->method == method) {
8456                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8457                 if (breakpoint_id) {
8458                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8459                         MONO_ADD_INS (cfg->cbb, ins);
8460                 }
8461         }
8462
8463         /* we use a separate basic block for the initialization code */
8464         NEW_BBLOCK (cfg, init_localsbb);
8465         cfg->bb_init = init_localsbb;
8466         init_localsbb->real_offset = cfg->real_offset;
8467         start_bblock->next_bb = init_localsbb;
8468         init_localsbb->next_bb = cfg->cbb;
8469         link_bblock (cfg, start_bblock, init_localsbb);
8470         link_bblock (cfg, init_localsbb, cfg->cbb);
8471
8472         cfg->cbb = init_localsbb;
8473
8474         if (cfg->gsharedvt && cfg->method == method) {
8475                 MonoGSharedVtMethodInfo *info;
8476                 MonoInst *var, *locals_var;
8477                 int dreg;
8478
8479                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8480                 info->method = cfg->method;
8481                 info->count_entries = 16;
8482                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8483                 cfg->gsharedvt_info = info;
8484
8485                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8486                 /* prevent it from being register allocated */
8487                 //var->flags |= MONO_INST_VOLATILE;
8488                 cfg->gsharedvt_info_var = var;
8489
8490                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8491                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8492
8493                 /* Allocate locals */
8494                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8495                 /* prevent it from being register allocated */
8496                 //locals_var->flags |= MONO_INST_VOLATILE;
8497                 cfg->gsharedvt_locals_var = locals_var;
8498
8499                 dreg = alloc_ireg (cfg);
8500                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8501
8502                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8503                 ins->dreg = locals_var->dreg;
8504                 ins->sreg1 = dreg;
8505                 MONO_ADD_INS (cfg->cbb, ins);
8506                 cfg->gsharedvt_locals_var_ins = ins;
8507
8508                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8509                 /*
8510                 if (init_locals)
8511                         ins->flags |= MONO_INST_INIT;
8512                 */
8513         }
8514
8515         if (mono_security_core_clr_enabled ()) {
8516                 /* check if this is native code, e.g. an icall or a p/invoke */
8517                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8518                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8519                         if (wrapped) {
8520                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8521                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8522
8523                                 /* if this ia a native call then it can only be JITted from platform code */
8524                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8525                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8526                                                 MonoException *ex = icall ? mono_get_exception_security () :
8527                                                         mono_get_exception_method_access ();
8528                                                 emit_throw_exception (cfg, ex);
8529                                         }
8530                                 }
8531                         }
8532                 }
8533         }
8534
8535         CHECK_CFG_EXCEPTION;
8536
8537         if (header->code_size == 0)
8538                 UNVERIFIED;
8539
8540         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8541                 ip = err_pos;
8542                 UNVERIFIED;
8543         }
8544
8545         if (cfg->method == method)
8546                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8547
8548         for (n = 0; n < header->num_locals; ++n) {
8549                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8550                         UNVERIFIED;
8551         }
8552         class_inits = NULL;
8553
8554         /* We force the vtable variable here for all shared methods
8555            for the possibility that they might show up in a stack
8556            trace where their exact instantiation is needed. */
8557         if (cfg->gshared && method == cfg->method) {
8558                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8559                                 mini_method_get_context (method)->method_inst ||
8560                                 method->klass->valuetype) {
8561                         mono_get_vtable_var (cfg);
8562                 } else {
8563                         /* FIXME: Is there a better way to do this?
8564                            We need the variable live for the duration
8565                            of the whole method. */
8566                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8567                 }
8568         }
8569
8570         /* add a check for this != NULL to inlined methods */
8571         if (is_virtual_call) {
8572                 MonoInst *arg_ins;
8573
8574                 NEW_ARGLOAD (cfg, arg_ins, 0);
8575                 MONO_ADD_INS (cfg->cbb, arg_ins);
8576                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8577         }
8578
8579         skip_dead_blocks = !dont_verify;
8580         if (skip_dead_blocks) {
8581                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8582                 CHECK_CFG_ERROR;
8583                 g_assert (bb);
8584         }
8585
8586         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8587         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8588
8589         ins_flag = 0;
8590         start_new_bblock = 0;
8591         while (ip < end) {
8592                 if (cfg->method == method)
8593                         cfg->real_offset = ip - header->code;
8594                 else
8595                         cfg->real_offset = inline_offset;
8596                 cfg->ip = ip;
8597
8598                 context_used = 0;
8599
8600                 if (start_new_bblock) {
8601                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8602                         if (start_new_bblock == 2) {
8603                                 g_assert (ip == tblock->cil_code);
8604                         } else {
8605                                 GET_BBLOCK (cfg, tblock, ip);
8606                         }
8607                         cfg->cbb->next_bb = tblock;
8608                         cfg->cbb = tblock;
8609                         start_new_bblock = 0;
8610                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8611                                 if (cfg->verbose_level > 3)
8612                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8613                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8614                                 *sp++ = ins;
8615                         }
8616                         if (class_inits)
8617                                 g_slist_free (class_inits);
8618                         class_inits = NULL;
8619                 } else {
8620                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8621                                 link_bblock (cfg, cfg->cbb, tblock);
8622                                 if (sp != stack_start) {
8623                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8624                                         sp = stack_start;
8625                                         CHECK_UNVERIFIABLE (cfg);
8626                                 }
8627                                 cfg->cbb->next_bb = tblock;
8628                                 cfg->cbb = tblock;
8629                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8630                                         if (cfg->verbose_level > 3)
8631                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8632                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8633                                         *sp++ = ins;
8634                                 }
8635                                 g_slist_free (class_inits);
8636                                 class_inits = NULL;
8637                         }
8638                 }
8639
8640                 if (skip_dead_blocks) {
8641                         int ip_offset = ip - header->code;
8642
8643                         if (ip_offset == bb->end)
8644                                 bb = bb->next;
8645
8646                         if (bb->dead) {
8647                                 int op_size = mono_opcode_size (ip, end);
8648                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8649
8650                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8651
8652                                 if (ip_offset + op_size == bb->end) {
8653                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8654                                         MONO_ADD_INS (cfg->cbb, ins);
8655                                         start_new_bblock = 1;
8656                                 }
8657
8658                                 ip += op_size;
8659                                 continue;
8660                         }
8661                 }
8662                 /*
8663                  * Sequence points are points where the debugger can place a breakpoint.
8664                  * Currently, we generate these automatically at points where the IL
8665                  * stack is empty.
8666                  */
8667                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8668                         /*
8669                          * Make methods interruptable at the beginning, and at the targets of
8670                          * backward branches.
8671                          * Also, do this at the start of every bblock in methods with clauses too,
8672                          * to be able to handle instructions with inprecise control flow like
8673                          * throw/endfinally.
8674                          * Backward branches are handled at the end of method-to-ir ().
8675                          */
8676                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8677                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8678
8679                         /* Avoid sequence points on empty IL like .volatile */
8680                         // FIXME: Enable this
8681                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8682                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8683                         if ((sp != stack_start) && !sym_seq_point)
8684                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8685                         MONO_ADD_INS (cfg->cbb, ins);
8686
8687                         if (sym_seq_points)
8688                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8689                 }
8690
8691                 cfg->cbb->real_offset = cfg->real_offset;
8692
8693                 if ((cfg->method == method) && cfg->coverage_info) {
8694                         guint32 cil_offset = ip - header->code;
8695                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8696
8697                         /* TODO: Use an increment here */
8698 #if defined(TARGET_X86)
8699                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8700                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8701                         ins->inst_imm = 1;
8702                         MONO_ADD_INS (cfg->cbb, ins);
8703 #else
8704                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8705                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8706 #endif
8707                 }
8708
8709                 if (cfg->verbose_level > 3)
8710                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8711
8712                 switch (*ip) {
8713                 case CEE_NOP:
8714                         if (seq_points && !sym_seq_points && sp != stack_start) {
8715                                 /*
8716                                  * The C# compiler uses these nops to notify the JIT that it should
8717                                  * insert seq points.
8718                                  */
8719                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8720                                 MONO_ADD_INS (cfg->cbb, ins);
8721                         }
8722                         if (cfg->keep_cil_nops)
8723                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8724                         else
8725                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8726                         ip++;
8727                         MONO_ADD_INS (cfg->cbb, ins);
8728                         break;
8729                 case CEE_BREAK:
8730                         if (should_insert_brekpoint (cfg->method)) {
8731                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8732                         } else {
8733                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8734                         }
8735                         ip++;
8736                         MONO_ADD_INS (cfg->cbb, ins);
8737                         break;
8738                 case CEE_LDARG_0:
8739                 case CEE_LDARG_1:
8740                 case CEE_LDARG_2:
8741                 case CEE_LDARG_3:
8742                         CHECK_STACK_OVF (1);
8743                         n = (*ip)-CEE_LDARG_0;
8744                         CHECK_ARG (n);
8745                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8746                         ip++;
8747                         *sp++ = ins;
8748                         break;
8749                 case CEE_LDLOC_0:
8750                 case CEE_LDLOC_1:
8751                 case CEE_LDLOC_2:
8752                 case CEE_LDLOC_3:
8753                         CHECK_STACK_OVF (1);
8754                         n = (*ip)-CEE_LDLOC_0;
8755                         CHECK_LOCAL (n);
8756                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8757                         ip++;
8758                         *sp++ = ins;
8759                         break;
8760                 case CEE_STLOC_0:
8761                 case CEE_STLOC_1:
8762                 case CEE_STLOC_2:
8763                 case CEE_STLOC_3: {
8764                         CHECK_STACK (1);
8765                         n = (*ip)-CEE_STLOC_0;
8766                         CHECK_LOCAL (n);
8767                         --sp;
8768                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8769                                 UNVERIFIED;
8770                         emit_stloc_ir (cfg, sp, header, n);
8771                         ++ip;
8772                         inline_costs += 1;
8773                         break;
8774                         }
8775                 case CEE_LDARG_S:
8776                         CHECK_OPSIZE (2);
8777                         CHECK_STACK_OVF (1);
8778                         n = ip [1];
8779                         CHECK_ARG (n);
8780                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8781                         *sp++ = ins;
8782                         ip += 2;
8783                         break;
8784                 case CEE_LDARGA_S:
8785                         CHECK_OPSIZE (2);
8786                         CHECK_STACK_OVF (1);
8787                         n = ip [1];
8788                         CHECK_ARG (n);
8789                         NEW_ARGLOADA (cfg, ins, n);
8790                         MONO_ADD_INS (cfg->cbb, ins);
8791                         *sp++ = ins;
8792                         ip += 2;
8793                         break;
8794                 case CEE_STARG_S:
8795                         CHECK_OPSIZE (2);
8796                         CHECK_STACK (1);
8797                         --sp;
8798                         n = ip [1];
8799                         CHECK_ARG (n);
8800                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8801                                 UNVERIFIED;
8802                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8803                         ip += 2;
8804                         break;
8805                 case CEE_LDLOC_S:
8806                         CHECK_OPSIZE (2);
8807                         CHECK_STACK_OVF (1);
8808                         n = ip [1];
8809                         CHECK_LOCAL (n);
8810                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8811                         *sp++ = ins;
8812                         ip += 2;
8813                         break;
8814                 case CEE_LDLOCA_S: {
8815                         unsigned char *tmp_ip;
8816                         CHECK_OPSIZE (2);
8817                         CHECK_STACK_OVF (1);
8818                         CHECK_LOCAL (ip [1]);
8819
8820                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8821                                 ip = tmp_ip;
8822                                 inline_costs += 1;
8823                                 break;
8824                         }
8825
8826                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8827                         *sp++ = ins;
8828                         ip += 2;
8829                         break;
8830                 }
8831                 case CEE_STLOC_S:
8832                         CHECK_OPSIZE (2);
8833                         CHECK_STACK (1);
8834                         --sp;
8835                         CHECK_LOCAL (ip [1]);
8836                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8837                                 UNVERIFIED;
8838                         emit_stloc_ir (cfg, sp, header, ip [1]);
8839                         ip += 2;
8840                         inline_costs += 1;
8841                         break;
8842                 case CEE_LDNULL:
8843                         CHECK_STACK_OVF (1);
8844                         EMIT_NEW_PCONST (cfg, ins, NULL);
8845                         ins->type = STACK_OBJ;
8846                         ++ip;
8847                         *sp++ = ins;
8848                         break;
8849                 case CEE_LDC_I4_M1:
8850                         CHECK_STACK_OVF (1);
8851                         EMIT_NEW_ICONST (cfg, ins, -1);
8852                         ++ip;
8853                         *sp++ = ins;
8854                         break;
8855                 case CEE_LDC_I4_0:
8856                 case CEE_LDC_I4_1:
8857                 case CEE_LDC_I4_2:
8858                 case CEE_LDC_I4_3:
8859                 case CEE_LDC_I4_4:
8860                 case CEE_LDC_I4_5:
8861                 case CEE_LDC_I4_6:
8862                 case CEE_LDC_I4_7:
8863                 case CEE_LDC_I4_8:
8864                         CHECK_STACK_OVF (1);
8865                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8866                         ++ip;
8867                         *sp++ = ins;
8868                         break;
8869                 case CEE_LDC_I4_S:
8870                         CHECK_OPSIZE (2);
8871                         CHECK_STACK_OVF (1);
8872                         ++ip;
8873                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8874                         ++ip;
8875                         *sp++ = ins;
8876                         break;
8877                 case CEE_LDC_I4:
8878                         CHECK_OPSIZE (5);
8879                         CHECK_STACK_OVF (1);
8880                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8881                         ip += 5;
8882                         *sp++ = ins;
8883                         break;
8884                 case CEE_LDC_I8:
8885                         CHECK_OPSIZE (9);
8886                         CHECK_STACK_OVF (1);
8887                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8888                         ins->type = STACK_I8;
8889                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8890                         ++ip;
8891                         ins->inst_l = (gint64)read64 (ip);
8892                         MONO_ADD_INS (cfg->cbb, ins);
8893                         ip += 8;
8894                         *sp++ = ins;
8895                         break;
8896                 case CEE_LDC_R4: {
8897                         float *f;
8898                         gboolean use_aotconst = FALSE;
8899
8900 #ifdef TARGET_POWERPC
8901                         /* FIXME: Clean this up */
8902                         if (cfg->compile_aot)
8903                                 use_aotconst = TRUE;
8904 #endif
8905
8906                         /* FIXME: we should really allocate this only late in the compilation process */
8907                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8908                         CHECK_OPSIZE (5);
8909                         CHECK_STACK_OVF (1);
8910
8911                         if (use_aotconst) {
8912                                 MonoInst *cons;
8913                                 int dreg;
8914
8915                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8916
8917                                 dreg = alloc_freg (cfg);
8918                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8919                                 ins->type = cfg->r4_stack_type;
8920                         } else {
8921                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8922                                 ins->type = cfg->r4_stack_type;
8923                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8924                                 ins->inst_p0 = f;
8925                                 MONO_ADD_INS (cfg->cbb, ins);
8926                         }
8927                         ++ip;
8928                         readr4 (ip, f);
8929                         ip += 4;
8930                         *sp++ = ins;
8931                         break;
8932                 }
8933                 case CEE_LDC_R8: {
8934                         double *d;
8935                         gboolean use_aotconst = FALSE;
8936
8937 #ifdef TARGET_POWERPC
8938                         /* FIXME: Clean this up */
8939                         if (cfg->compile_aot)
8940                                 use_aotconst = TRUE;
8941 #endif
8942
8943                         /* FIXME: we should really allocate this only late in the compilation process */
8944                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8945                         CHECK_OPSIZE (9);
8946                         CHECK_STACK_OVF (1);
8947
8948                         if (use_aotconst) {
8949                                 MonoInst *cons;
8950                                 int dreg;
8951
8952                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8953
8954                                 dreg = alloc_freg (cfg);
8955                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8956                                 ins->type = STACK_R8;
8957                         } else {
8958                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8959                                 ins->type = STACK_R8;
8960                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8961                                 ins->inst_p0 = d;
8962                                 MONO_ADD_INS (cfg->cbb, ins);
8963                         }
8964                         ++ip;
8965                         readr8 (ip, d);
8966                         ip += 8;
8967                         *sp++ = ins;
8968                         break;
8969                 }
8970                 case CEE_DUP: {
8971                         MonoInst *temp, *store;
8972                         CHECK_STACK (1);
8973                         CHECK_STACK_OVF (1);
8974                         sp--;
8975                         ins = *sp;
8976
8977                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8978                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8979
8980                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8981                         *sp++ = ins;
8982
8983                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8984                         *sp++ = ins;
8985
8986                         ++ip;
8987                         inline_costs += 2;
8988                         break;
8989                 }
8990                 case CEE_POP:
8991                         CHECK_STACK (1);
8992                         ip++;
8993                         --sp;
8994
8995 #ifdef TARGET_X86
8996                         if (sp [0]->type == STACK_R8)
8997                                 /* we need to pop the value from the x86 FP stack */
8998                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8999 #endif
9000                         break;
9001                 case CEE_JMP: {
9002                         MonoCallInst *call;
9003                         MonoMethodSignature *fsig;
9004                         int i, n;
9005
9006                         INLINE_FAILURE ("jmp");
9007                         GSHAREDVT_FAILURE (*ip);
9008
9009                         CHECK_OPSIZE (5);
9010                         if (stack_start != sp)
9011                                 UNVERIFIED;
9012                         token = read32 (ip + 1);
9013                         /* FIXME: check the signature matches */
9014                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9015                         CHECK_CFG_ERROR;
9016
9017                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9018                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9019
9020                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9021
9022                         fsig = mono_method_signature (cmethod);
9023                         n = fsig->param_count + fsig->hasthis;
9024                         if (cfg->llvm_only) {
9025                                 MonoInst **args;
9026
9027                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9028                                 for (i = 0; i < n; ++i)
9029                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9030                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9031                                 /*
9032                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9033                                  * have to emit a normal return since llvm expects it.
9034                                  */
9035                                 if (cfg->ret)
9036                                         emit_setret (cfg, ins);
9037                                 MONO_INST_NEW (cfg, ins, OP_BR);
9038                                 ins->inst_target_bb = end_bblock;
9039                                 MONO_ADD_INS (cfg->cbb, ins);
9040                                 link_bblock (cfg, cfg->cbb, end_bblock);
9041                                 ip += 5;
9042                                 break;
9043                         } else if (cfg->backend->have_op_tail_call) {
9044                                 /* Handle tail calls similarly to calls */
9045                                 DISABLE_AOT (cfg);
9046
9047                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9048                                 call->method = cmethod;
9049                                 call->tail_call = TRUE;
9050                                 call->signature = mono_method_signature (cmethod);
9051                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9052                                 call->inst.inst_p0 = cmethod;
9053                                 for (i = 0; i < n; ++i)
9054                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9055
9056                                 mono_arch_emit_call (cfg, call);
9057                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9058                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9059                         } else {
9060                                 for (i = 0; i < num_args; ++i)
9061                                         /* Prevent arguments from being optimized away */
9062                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9063
9064                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9065                                 ins = (MonoInst*)call;
9066                                 ins->inst_p0 = cmethod;
9067                                 MONO_ADD_INS (cfg->cbb, ins);
9068                         }
9069
9070                         ip += 5;
9071                         start_new_bblock = 1;
9072                         break;
9073                 }
9074                 case CEE_CALLI: {
9075                         MonoInst *addr;
9076                         MonoMethodSignature *fsig;
9077
9078                         CHECK_OPSIZE (5);
9079                         token = read32 (ip + 1);
9080
9081                         ins = NULL;
9082
9083                         //GSHAREDVT_FAILURE (*ip);
9084                         cmethod = NULL;
9085                         CHECK_STACK (1);
9086                         --sp;
9087                         addr = *sp;
9088                         fsig = mini_get_signature (method, token, generic_context);
9089
9090                         if (method->dynamic && fsig->pinvoke) {
9091                                 MonoInst *args [3];
9092
9093                                 /*
9094                                  * This is a call through a function pointer using a pinvoke
9095                                  * signature. Have to create a wrapper and call that instead.
9096                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9097                                  * instead based on the signature.
9098                                  */
9099                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9100                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9101                                 args [2] = addr;
9102                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9103                         }
9104
9105                         n = fsig->param_count + fsig->hasthis;
9106
9107                         CHECK_STACK (n);
9108
9109                         //g_assert (!virtual_ || fsig->hasthis);
9110
9111                         sp -= n;
9112
9113                         inline_costs += 10 * num_calls++;
9114
9115                         /*
9116                          * Making generic calls out of gsharedvt methods.
9117                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9118                          * patching gshared method addresses into a gsharedvt method.
9119                          */
9120                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9121                                 /*
9122                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9123                                  */
9124                                 MonoInst *callee = addr;
9125
9126                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9127                                         /* Not tested */
9128                                         GSHAREDVT_FAILURE (*ip);
9129
9130                                 if (cfg->llvm_only)
9131                                         // FIXME:
9132                                         GSHAREDVT_FAILURE (*ip);
9133
9134                                 addr = emit_get_rgctx_sig (cfg, context_used,
9135                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9136                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9137                                 goto calli_end;
9138                         }
9139
9140                         /* Prevent inlining of methods with indirect calls */
9141                         INLINE_FAILURE ("indirect call");
9142
9143                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9144                                 MonoJumpInfoType info_type;
9145                                 gpointer info_data;
9146
9147                                 /*
9148                                  * Instead of emitting an indirect call, emit a direct call
9149                                  * with the contents of the aotconst as the patch info.
9150                                  */
9151                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9152                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9153                                         info_data = addr->inst_p0;
9154                                 } else {
9155                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9156                                         info_data = addr->inst_right->inst_left;
9157                                 }
9158
9159                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9160                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9161                                         NULLIFY_INS (addr);
9162                                         goto calli_end;
9163                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9164                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9165                                         NULLIFY_INS (addr);
9166                                         goto calli_end;
9167                                 }
9168                         }
9169                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9170
9171                         calli_end:
9172
9173                         /* End of call, INS should contain the result of the call, if any */
9174
9175                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9176                                 g_assert (ins);
9177                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9178                         }
9179
9180                         CHECK_CFG_EXCEPTION;
9181
9182                         ip += 5;
9183                         ins_flag = 0;
9184                         constrained_class = NULL;
9185                         break;
9186                 }
9187                 case CEE_CALL:
9188                 case CEE_CALLVIRT: {
9189                         MonoInst *addr = NULL;
9190                         MonoMethodSignature *fsig = NULL;
9191                         int array_rank = 0;
9192                         int virtual_ = *ip == CEE_CALLVIRT;
9193                         gboolean pass_imt_from_rgctx = FALSE;
9194                         MonoInst *imt_arg = NULL;
9195                         MonoInst *keep_this_alive = NULL;
9196                         gboolean pass_vtable = FALSE;
9197                         gboolean pass_mrgctx = FALSE;
9198                         MonoInst *vtable_arg = NULL;
9199                         gboolean check_this = FALSE;
9200                         gboolean supported_tail_call = FALSE;
9201                         gboolean tail_call = FALSE;
9202                         gboolean need_seq_point = FALSE;
9203                         guint32 call_opcode = *ip;
9204                         gboolean emit_widen = TRUE;
9205                         gboolean push_res = TRUE;
9206                         gboolean skip_ret = FALSE;
9207                         gboolean delegate_invoke = FALSE;
9208                         gboolean direct_icall = FALSE;
9209                         gboolean constrained_partial_call = FALSE;
9210                         MonoMethod *cil_method;
9211
9212                         CHECK_OPSIZE (5);
9213                         token = read32 (ip + 1);
9214
9215                         ins = NULL;
9216
9217                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9218                         CHECK_CFG_ERROR;
9219
9220                         cil_method = cmethod;
9221
9222                         if (constrained_class) {
9223                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9224                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9225                                                 g_assert (!cmethod->klass->valuetype);
9226                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9227                                                         constrained_partial_call = TRUE;
9228                                         }
9229                                 }
9230
9231                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9232                                         if (cfg->verbose_level > 2)
9233                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9234                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9235                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9236                                                   cfg->gshared)) {
9237                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9238                                                 CHECK_CFG_ERROR;
9239                                         }
9240                                 } else {
9241                                         if (cfg->verbose_level > 2)
9242                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9243
9244                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9245                                                 /*
9246                                                  * This is needed since get_method_constrained can't find
9247                                                  * the method in klass representing a type var.
9248                                                  * The type var is guaranteed to be a reference type in this
9249                                                  * case.
9250                                                  */
9251                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9252                                                         g_assert (!cmethod->klass->valuetype);
9253                                         } else {
9254                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9255                                                 CHECK_CFG_ERROR;
9256                                         }
9257                                 }
9258                         }
9259
9260                         if (!dont_verify && !cfg->skip_visibility) {
9261                                 MonoMethod *target_method = cil_method;
9262                                 if (method->is_inflated) {
9263                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9264                                         CHECK_CFG_ERROR;
9265                                 }
9266                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9267                                         !mono_method_can_access_method (method, cil_method))
9268                                         METHOD_ACCESS_FAILURE (method, cil_method);
9269                         }
9270
9271                         if (mono_security_core_clr_enabled ())
9272                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9273
9274                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9275                                 /* MS.NET seems to silently convert this to a callvirt */
9276                                 virtual_ = 1;
9277
9278                         {
9279                                 /*
9280                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9281                                  * converts to a callvirt.
9282                                  *
9283                                  * tests/bug-515884.il is an example of this behavior
9284                                  */
9285                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9286                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9287                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9288                                         virtual_ = 1;
9289                         }
9290
9291                         if (!cmethod->klass->inited)
9292                                 if (!mono_class_init (cmethod->klass))
9293                                         TYPE_LOAD_ERROR (cmethod->klass);
9294
9295                         fsig = mono_method_signature (cmethod);
9296                         if (!fsig)
9297                                 LOAD_ERROR;
9298                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9299                                 mini_class_is_system_array (cmethod->klass)) {
9300                                 array_rank = cmethod->klass->rank;
9301                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9302                                 direct_icall = TRUE;
9303                         } else if (fsig->pinvoke) {
9304                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9305                                 fsig = mono_method_signature (wrapper);
9306                         } else if (constrained_class) {
9307                         } else {
9308                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9309                                 CHECK_CFG_ERROR;
9310                         }
9311
9312                         if (cfg->llvm_only && !cfg->method->wrapper_type)
9313                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9314
9315                         /* See code below */
9316                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9317                                 MonoBasicBlock *tbb;
9318
9319                                 GET_BBLOCK (cfg, tbb, ip + 5);
9320                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9321                                         /*
9322                                          * We want to extend the try block to cover the call, but we can't do it if the
9323                                          * call is made directly since its followed by an exception check.
9324                                          */
9325                                         direct_icall = FALSE;
9326                                 }
9327                         }
9328
9329                         mono_save_token_info (cfg, image, token, cil_method);
9330
9331                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9332                                 need_seq_point = TRUE;
9333
9334                         /* Don't support calls made using type arguments for now */
9335                         /*
9336                           if (cfg->gsharedvt) {
9337                           if (mini_is_gsharedvt_signature (fsig))
9338                           GSHAREDVT_FAILURE (*ip);
9339                           }
9340                         */
9341
9342                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9343                                 g_assert_not_reached ();
9344
9345                         n = fsig->param_count + fsig->hasthis;
9346
9347                         if (!cfg->gshared && cmethod->klass->generic_container)
9348                                 UNVERIFIED;
9349
9350                         if (!cfg->gshared)
9351                                 g_assert (!mono_method_check_context_used (cmethod));
9352
9353                         CHECK_STACK (n);
9354
9355                         //g_assert (!virtual_ || fsig->hasthis);
9356
9357                         sp -= n;
9358
9359                         /*
9360                          * We have the `constrained.' prefix opcode.
9361                          */
9362                         if (constrained_class) {
9363                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9364                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9365                                                 /* The 'Own method' case below */
9366                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9367                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9368                                         } else {
9369                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9370                                                 CHECK_CFG_EXCEPTION;
9371                                                 g_assert (ins);
9372                                                 goto call_end;
9373                                         }
9374                                 }
9375
9376                                 if (constrained_partial_call) {
9377                                         gboolean need_box = TRUE;
9378
9379                                         /*
9380                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9381                                          * called method is not known at compile time either. The called method could end up being
9382                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9383                                          * to box the receiver.
9384                                          * A simple solution would be to box always and make a normal virtual call, but that would
9385                                          * be bad performance wise.
9386                                          */
9387                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9388                                                 /*
9389                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9390                                                  */
9391                                                 need_box = FALSE;
9392                                         }
9393
9394                                         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)) {
9395                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9396                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9397                                                 ins->klass = constrained_class;
9398                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9399                                                 CHECK_CFG_EXCEPTION;
9400                                         } else if (need_box) {
9401                                                 MonoInst *box_type;
9402                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9403                                                 MonoInst *nonbox_call;
9404
9405                                                 /*
9406                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9407                                                  * if needed.
9408                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9409                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9410                                                  */
9411                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9412
9413                                                 NEW_BBLOCK (cfg, is_ref_bb);
9414                                                 NEW_BBLOCK (cfg, end_bb);
9415
9416                                                 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);
9417                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9418                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9419
9420                                                 /* Non-ref case */
9421                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9422
9423                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9424
9425                                                 /* Ref case */
9426                                                 MONO_START_BB (cfg, is_ref_bb);
9427                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9428                                                 ins->klass = constrained_class;
9429                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9430                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9431
9432                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9433
9434                                                 MONO_START_BB (cfg, end_bb);
9435                                                 cfg->cbb = end_bb;
9436
9437                                                 nonbox_call->dreg = ins->dreg;
9438                                                 goto call_end;
9439                                         } else {
9440                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9441                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9442                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9443                                                 goto call_end;
9444                                         }
9445                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9446                                         /*
9447                                          * The type parameter is instantiated as a valuetype,
9448                                          * but that type doesn't override the method we're
9449                                          * calling, so we need to box `this'.
9450                                          */
9451                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9452                                         ins->klass = constrained_class;
9453                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9454                                         CHECK_CFG_EXCEPTION;
9455                                 } else if (!constrained_class->valuetype) {
9456                                         int dreg = alloc_ireg_ref (cfg);
9457
9458                                         /*
9459                                          * The type parameter is instantiated as a reference
9460                                          * type.  We have a managed pointer on the stack, so
9461                                          * we need to dereference it here.
9462                                          */
9463                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9464                                         ins->type = STACK_OBJ;
9465                                         sp [0] = ins;
9466                                 } else {
9467                                         if (cmethod->klass->valuetype) {
9468                                                 /* Own method */
9469                                         } else {
9470                                                 /* Interface method */
9471                                                 int ioffset, slot;
9472
9473                                                 mono_class_setup_vtable (constrained_class);
9474                                                 CHECK_TYPELOAD (constrained_class);
9475                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9476                                                 if (ioffset == -1)
9477                                                         TYPE_LOAD_ERROR (constrained_class);
9478                                                 slot = mono_method_get_vtable_slot (cmethod);
9479                                                 if (slot == -1)
9480                                                         TYPE_LOAD_ERROR (cmethod->klass);
9481                                                 cmethod = constrained_class->vtable [ioffset + slot];
9482
9483                                                 if (cmethod->klass == mono_defaults.enum_class) {
9484                                                         /* Enum implements some interfaces, so treat this as the first case */
9485                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9486                                                         ins->klass = constrained_class;
9487                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9488                                                         CHECK_CFG_EXCEPTION;
9489                                                 }
9490                                         }
9491                                         virtual_ = 0;
9492                                 }
9493                                 constrained_class = NULL;
9494                         }
9495
9496                         if (check_call_signature (cfg, fsig, sp))
9497                                 UNVERIFIED;
9498
9499                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9500                                 delegate_invoke = TRUE;
9501
9502                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9503                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9504                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9505                                         emit_widen = FALSE;
9506                                 }
9507
9508                                 goto call_end;
9509                         }
9510
9511                         /*
9512                          * If the callee is a shared method, then its static cctor
9513                          * might not get called after the call was patched.
9514                          */
9515                         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)) {
9516                                 emit_class_init (cfg, cmethod->klass);
9517                                 CHECK_TYPELOAD (cmethod->klass);
9518                         }
9519
9520                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9521
9522                         if (cfg->gshared) {
9523                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9524
9525                                 context_used = mini_method_check_context_used (cfg, cmethod);
9526
9527                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9528                                         /* Generic method interface
9529                                            calls are resolved via a
9530                                            helper function and don't
9531                                            need an imt. */
9532                                         if (!cmethod_context || !cmethod_context->method_inst)
9533                                                 pass_imt_from_rgctx = TRUE;
9534                                 }
9535
9536                                 /*
9537                                  * If a shared method calls another
9538                                  * shared method then the caller must
9539                                  * have a generic sharing context
9540                                  * because the magic trampoline
9541                                  * requires it.  FIXME: We shouldn't
9542                                  * have to force the vtable/mrgctx
9543                                  * variable here.  Instead there
9544                                  * should be a flag in the cfg to
9545                                  * request a generic sharing context.
9546                                  */
9547                                 if (context_used &&
9548                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9549                                         mono_get_vtable_var (cfg);
9550                         }
9551
9552                         if (pass_vtable) {
9553                                 if (context_used) {
9554                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9555                                 } else {
9556                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9557
9558                                         CHECK_TYPELOAD (cmethod->klass);
9559                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9560                                 }
9561                         }
9562
9563                         if (pass_mrgctx) {
9564                                 g_assert (!vtable_arg);
9565
9566                                 if (!cfg->compile_aot) {
9567                                         /*
9568                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9569                                          * for type load errors before.
9570                                          */
9571                                         mono_class_setup_vtable (cmethod->klass);
9572                                         CHECK_TYPELOAD (cmethod->klass);
9573                                 }
9574
9575                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9576
9577                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9578                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9579                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9580                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9581                                         if (virtual_)
9582                                                 check_this = TRUE;
9583                                         virtual_ = 0;
9584                                 }
9585                         }
9586
9587                         if (pass_imt_from_rgctx) {
9588                                 g_assert (!pass_vtable);
9589
9590                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9591                                         cmethod, MONO_RGCTX_INFO_METHOD);
9592                         }
9593
9594                         if (check_this)
9595                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9596
9597                         /* Calling virtual generic methods */
9598                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9599                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9600                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9601                             fsig->generic_param_count &&
9602                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9603                                 !cfg->llvm_only) {
9604                                 MonoInst *this_temp, *this_arg_temp, *store;
9605                                 MonoInst *iargs [4];
9606
9607                                 g_assert (fsig->is_inflated);
9608
9609                                 /* Prevent inlining of methods that contain indirect calls */
9610                                 INLINE_FAILURE ("virtual generic call");
9611
9612                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9613                                         GSHAREDVT_FAILURE (*ip);
9614
9615                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9616                                         g_assert (!imt_arg);
9617                                         if (!context_used)
9618                                                 g_assert (cmethod->is_inflated);
9619                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9620                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9621                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9622                                 } else {
9623                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9624                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9625                                         MONO_ADD_INS (cfg->cbb, store);
9626
9627                                         /* FIXME: This should be a managed pointer */
9628                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9629
9630                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9631                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9632                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9633                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9634                                         addr = mono_emit_jit_icall (cfg,
9635                                                                                                 mono_helper_compile_generic_method, iargs);
9636
9637                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9638
9639                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9640                                 }
9641
9642                                 goto call_end;
9643                         }
9644
9645                         /*
9646                          * Implement a workaround for the inherent races involved in locking:
9647                          * Monitor.Enter ()
9648                          * try {
9649                          * } finally {
9650                          *    Monitor.Exit ()
9651                          * }
9652                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9653                          * try block, the Exit () won't be executed, see:
9654                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9655                          * To work around this, we extend such try blocks to include the last x bytes
9656                          * of the Monitor.Enter () call.
9657                          */
9658                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9659                                 MonoBasicBlock *tbb;
9660
9661                                 GET_BBLOCK (cfg, tbb, ip + 5);
9662                                 /*
9663                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9664                                  * from Monitor.Enter like ArgumentNullException.
9665                                  */
9666                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9667                                         /* Mark this bblock as needing to be extended */
9668                                         tbb->extend_try_block = TRUE;
9669                                 }
9670                         }
9671
9672                         /* Conversion to a JIT intrinsic */
9673                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9674                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9675                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9676                                         emit_widen = FALSE;
9677                                 }
9678                                 goto call_end;
9679                         }
9680
9681                         /* Inlining */
9682                         if ((cfg->opt & MONO_OPT_INLINE) &&
9683                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9684                             mono_method_check_inlining (cfg, cmethod)) {
9685                                 int costs;
9686                                 gboolean always = FALSE;
9687
9688                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9689                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9690                                         /* Prevent inlining of methods that call wrappers */
9691                                         INLINE_FAILURE ("wrapper call");
9692                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9693                                         always = TRUE;
9694                                 }
9695
9696                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9697                                 if (costs) {
9698                                         cfg->real_offset += 5;
9699
9700                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9701                                                 /* *sp is already set by inline_method */
9702                                                 sp++;
9703                                                 push_res = FALSE;
9704                                         }
9705
9706                                         inline_costs += costs;
9707
9708                                         goto call_end;
9709                                 }
9710                         }
9711
9712                         /* Tail recursion elimination */
9713                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9714                                 gboolean has_vtargs = FALSE;
9715                                 int i;
9716
9717                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9718                                 INLINE_FAILURE ("tail call");
9719
9720                                 /* keep it simple */
9721                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9722                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9723                                                 has_vtargs = TRUE;
9724                                 }
9725
9726                                 if (!has_vtargs) {
9727                                         for (i = 0; i < n; ++i)
9728                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9729                                         MONO_INST_NEW (cfg, ins, OP_BR);
9730                                         MONO_ADD_INS (cfg->cbb, ins);
9731                                         tblock = start_bblock->out_bb [0];
9732                                         link_bblock (cfg, cfg->cbb, tblock);
9733                                         ins->inst_target_bb = tblock;
9734                                         start_new_bblock = 1;
9735
9736                                         /* skip the CEE_RET, too */
9737                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9738                                                 skip_ret = TRUE;
9739                                         push_res = FALSE;
9740                                         goto call_end;
9741                                 }
9742                         }
9743
9744                         inline_costs += 10 * num_calls++;
9745
9746                         /*
9747                          * Making generic calls out of gsharedvt methods.
9748                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9749                          * patching gshared method addresses into a gsharedvt method.
9750                          */
9751                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9752                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9753                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9754                                 MonoRgctxInfoType info_type;
9755
9756                                 if (virtual_) {
9757                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9758                                                 //GSHAREDVT_FAILURE (*ip);
9759                                         // disable for possible remoting calls
9760                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9761                                                 GSHAREDVT_FAILURE (*ip);
9762                                         if (fsig->generic_param_count) {
9763                                                 /* virtual generic call */
9764                                                 g_assert (!imt_arg);
9765                                                 /* Same as the virtual generic case above */
9766                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9767                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9768                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9769                                                 vtable_arg = NULL;
9770                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9771                                                 /* This can happen when we call a fully instantiated iface method */
9772                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9773                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9774                                                 vtable_arg = NULL;
9775                                         }
9776                                 }
9777
9778                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9779                                         keep_this_alive = sp [0];
9780
9781                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9782                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9783                                 else
9784                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9785                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9786
9787                                 if (cfg->llvm_only) {
9788                                         // FIXME: Avoid initializing vtable_arg
9789                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9790                                 } else {
9791                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9792                                 }
9793                                 goto call_end;
9794                         }
9795
9796                         /* Generic sharing */
9797
9798                         /*
9799                          * Use this if the callee is gsharedvt sharable too, since
9800                          * at runtime we might find an instantiation so the call cannot
9801                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9802                          */
9803                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9804                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9805                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9806                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9807                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9808                                 INLINE_FAILURE ("gshared");
9809
9810                                 g_assert (cfg->gshared && cmethod);
9811                                 g_assert (!addr);
9812
9813                                 /*
9814                                  * We are compiling a call to a
9815                                  * generic method from shared code,
9816                                  * which means that we have to look up
9817                                  * the method in the rgctx and do an
9818                                  * indirect call.
9819                                  */
9820                                 if (fsig->hasthis)
9821                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9822
9823                                 if (cfg->llvm_only) {
9824                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9825                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9826                                         else
9827                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9828                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9829                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9830                                 } else {
9831                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9832                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9833                                 }
9834                                 goto call_end;
9835                         }
9836
9837                         /* Direct calls to icalls */
9838                         if (direct_icall) {
9839                                 MonoMethod *wrapper;
9840                                 int costs;
9841
9842                                 /* Inline the wrapper */
9843                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9844
9845                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9846                                 g_assert (costs > 0);
9847                                 cfg->real_offset += 5;
9848
9849                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9850                                         /* *sp is already set by inline_method */
9851                                         sp++;
9852                                         push_res = FALSE;
9853                                 }
9854
9855                                 inline_costs += costs;
9856
9857                                 goto call_end;
9858                         }
9859
9860                         /* Array methods */
9861                         if (array_rank) {
9862                                 MonoInst *addr;
9863
9864                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9865                                         MonoInst *val = sp [fsig->param_count];
9866
9867                                         if (val->type == STACK_OBJ) {
9868                                                 MonoInst *iargs [2];
9869
9870                                                 iargs [0] = sp [0];
9871                                                 iargs [1] = val;
9872
9873                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9874                                         }
9875
9876                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9877                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9878                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9879                                                 emit_write_barrier (cfg, addr, val);
9880                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9881                                                 GSHAREDVT_FAILURE (*ip);
9882                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9883                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9884
9885                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9886                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9887                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9888                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9889                                         CHECK_TYPELOAD (cmethod->klass);
9890
9891                                         readonly = FALSE;
9892                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9893                                         ins = addr;
9894                                 } else {
9895                                         g_assert_not_reached ();
9896                                 }
9897
9898                                 emit_widen = FALSE;
9899                                 goto call_end;
9900                         }
9901
9902                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9903                         if (ins)
9904                                 goto call_end;
9905
9906                         /* Tail prefix / tail call optimization */
9907
9908                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9909                         /* FIXME: runtime generic context pointer for jumps? */
9910                         /* FIXME: handle this for generic sharing eventually */
9911                         if ((ins_flag & MONO_INST_TAILCALL) &&
9912                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9913                                 supported_tail_call = TRUE;
9914
9915                         if (supported_tail_call) {
9916                                 MonoCallInst *call;
9917
9918                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9919                                 INLINE_FAILURE ("tail call");
9920
9921                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9922
9923                                 if (cfg->backend->have_op_tail_call) {
9924                                         /* Handle tail calls similarly to normal calls */
9925                                         tail_call = TRUE;
9926                                 } else {
9927                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9928
9929                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9930                                         call->tail_call = TRUE;
9931                                         call->method = cmethod;
9932                                         call->signature = mono_method_signature (cmethod);
9933
9934                                         /*
9935                                          * We implement tail calls by storing the actual arguments into the
9936                                          * argument variables, then emitting a CEE_JMP.
9937                                          */
9938                                         for (i = 0; i < n; ++i) {
9939                                                 /* Prevent argument from being register allocated */
9940                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9941                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9942                                         }
9943                                         ins = (MonoInst*)call;
9944                                         ins->inst_p0 = cmethod;
9945                                         ins->inst_p1 = arg_array [0];
9946                                         MONO_ADD_INS (cfg->cbb, ins);
9947                                         link_bblock (cfg, cfg->cbb, end_bblock);
9948                                         start_new_bblock = 1;
9949
9950                                         // FIXME: Eliminate unreachable epilogs
9951
9952                                         /*
9953                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9954                                          * only reachable from this call.
9955                                          */
9956                                         GET_BBLOCK (cfg, tblock, ip + 5);
9957                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9958                                                 skip_ret = TRUE;
9959                                         push_res = FALSE;
9960
9961                                         goto call_end;
9962                                 }
9963                         }
9964
9965                         /*
9966                          * Synchronized wrappers.
9967                          * Its hard to determine where to replace a method with its synchronized
9968                          * wrapper without causing an infinite recursion. The current solution is
9969                          * to add the synchronized wrapper in the trampolines, and to
9970                          * change the called method to a dummy wrapper, and resolve that wrapper
9971                          * to the real method in mono_jit_compile_method ().
9972                          */
9973                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9974                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9975                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9976                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9977                         }
9978
9979                         /*
9980                          * Virtual calls in llvm-only mode.
9981                          */
9982                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9983                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9984                                 goto call_end;
9985                         }
9986
9987                         /* Common call */
9988                         INLINE_FAILURE ("call");
9989                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9990                                                                                           imt_arg, vtable_arg);
9991
9992                         if (tail_call && !cfg->llvm_only) {
9993                                 link_bblock (cfg, cfg->cbb, end_bblock);
9994                                 start_new_bblock = 1;
9995
9996                                 // FIXME: Eliminate unreachable epilogs
9997
9998                                 /*
9999                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10000                                  * only reachable from this call.
10001                                  */
10002                                 GET_BBLOCK (cfg, tblock, ip + 5);
10003                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10004                                         skip_ret = TRUE;
10005                                 push_res = FALSE;
10006                         }
10007
10008                         call_end:
10009
10010                         /* End of call, INS should contain the result of the call, if any */
10011
10012                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10013                                 g_assert (ins);
10014                                 if (emit_widen)
10015                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10016                                 else
10017                                         *sp++ = ins;
10018                         }
10019
10020                         if (keep_this_alive) {
10021                                 MonoInst *dummy_use;
10022
10023                                 /* See mono_emit_method_call_full () */
10024                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10025                         }
10026
10027                         CHECK_CFG_EXCEPTION;
10028
10029                         ip += 5;
10030                         if (skip_ret) {
10031                                 g_assert (*ip == CEE_RET);
10032                                 ip += 1;
10033                         }
10034                         ins_flag = 0;
10035                         constrained_class = NULL;
10036                         if (need_seq_point)
10037                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10038                         break;
10039                 }
10040                 case CEE_RET:
10041                         if (cfg->method != method) {
10042                                 /* return from inlined method */
10043                                 /*
10044                                  * If in_count == 0, that means the ret is unreachable due to
10045                                  * being preceeded by a throw. In that case, inline_method () will
10046                                  * handle setting the return value
10047                                  * (test case: test_0_inline_throw ()).
10048                                  */
10049                                 if (return_var && cfg->cbb->in_count) {
10050                                         MonoType *ret_type = mono_method_signature (method)->ret;
10051
10052                                         MonoInst *store;
10053                                         CHECK_STACK (1);
10054                                         --sp;
10055
10056                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10057                                                 UNVERIFIED;
10058
10059                                         //g_assert (returnvar != -1);
10060                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10061                                         cfg->ret_var_set = TRUE;
10062                                 }
10063                         } else {
10064                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10065
10066                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10067                                         emit_pop_lmf (cfg);
10068
10069                                 if (cfg->ret) {
10070                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10071
10072                                         if (seq_points && !sym_seq_points) {
10073                                                 /*
10074                                                  * Place a seq point here too even through the IL stack is not
10075                                                  * empty, so a step over on
10076                                                  * call <FOO>
10077                                                  * ret
10078                                                  * will work correctly.
10079                                                  */
10080                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10081                                                 MONO_ADD_INS (cfg->cbb, ins);
10082                                         }
10083
10084                                         g_assert (!return_var);
10085                                         CHECK_STACK (1);
10086                                         --sp;
10087
10088                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10089                                                 UNVERIFIED;
10090
10091                                         emit_setret (cfg, *sp);
10092                                 }
10093                         }
10094                         if (sp != stack_start)
10095                                 UNVERIFIED;
10096                         MONO_INST_NEW (cfg, ins, OP_BR);
10097                         ip++;
10098                         ins->inst_target_bb = end_bblock;
10099                         MONO_ADD_INS (cfg->cbb, ins);
10100                         link_bblock (cfg, cfg->cbb, end_bblock);
10101                         start_new_bblock = 1;
10102                         break;
10103                 case CEE_BR_S:
10104                         CHECK_OPSIZE (2);
10105                         MONO_INST_NEW (cfg, ins, OP_BR);
10106                         ip++;
10107                         target = ip + 1 + (signed char)(*ip);
10108                         ++ip;
10109                         GET_BBLOCK (cfg, tblock, target);
10110                         link_bblock (cfg, cfg->cbb, tblock);
10111                         ins->inst_target_bb = tblock;
10112                         if (sp != stack_start) {
10113                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10114                                 sp = stack_start;
10115                                 CHECK_UNVERIFIABLE (cfg);
10116                         }
10117                         MONO_ADD_INS (cfg->cbb, ins);
10118                         start_new_bblock = 1;
10119                         inline_costs += BRANCH_COST;
10120                         break;
10121                 case CEE_BEQ_S:
10122                 case CEE_BGE_S:
10123                 case CEE_BGT_S:
10124                 case CEE_BLE_S:
10125                 case CEE_BLT_S:
10126                 case CEE_BNE_UN_S:
10127                 case CEE_BGE_UN_S:
10128                 case CEE_BGT_UN_S:
10129                 case CEE_BLE_UN_S:
10130                 case CEE_BLT_UN_S:
10131                         CHECK_OPSIZE (2);
10132                         CHECK_STACK (2);
10133                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10134                         ip++;
10135                         target = ip + 1 + *(signed char*)ip;
10136                         ip++;
10137
10138                         ADD_BINCOND (NULL);
10139
10140                         sp = stack_start;
10141                         inline_costs += BRANCH_COST;
10142                         break;
10143                 case CEE_BR:
10144                         CHECK_OPSIZE (5);
10145                         MONO_INST_NEW (cfg, ins, OP_BR);
10146                         ip++;
10147
10148                         target = ip + 4 + (gint32)read32(ip);
10149                         ip += 4;
10150                         GET_BBLOCK (cfg, tblock, target);
10151                         link_bblock (cfg, cfg->cbb, tblock);
10152                         ins->inst_target_bb = tblock;
10153                         if (sp != stack_start) {
10154                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10155                                 sp = stack_start;
10156                                 CHECK_UNVERIFIABLE (cfg);
10157                         }
10158
10159                         MONO_ADD_INS (cfg->cbb, ins);
10160
10161                         start_new_bblock = 1;
10162                         inline_costs += BRANCH_COST;
10163                         break;
10164                 case CEE_BRFALSE_S:
10165                 case CEE_BRTRUE_S:
10166                 case CEE_BRFALSE:
10167                 case CEE_BRTRUE: {
10168                         MonoInst *cmp;
10169                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10170                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10171                         guint32 opsize = is_short ? 1 : 4;
10172
10173                         CHECK_OPSIZE (opsize);
10174                         CHECK_STACK (1);
10175                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10176                                 UNVERIFIED;
10177                         ip ++;
10178                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10179                         ip += opsize;
10180
10181                         sp--;
10182
10183                         GET_BBLOCK (cfg, tblock, target);
10184                         link_bblock (cfg, cfg->cbb, tblock);
10185                         GET_BBLOCK (cfg, tblock, ip);
10186                         link_bblock (cfg, cfg->cbb, tblock);
10187
10188                         if (sp != stack_start) {
10189                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10190                                 CHECK_UNVERIFIABLE (cfg);
10191                         }
10192
10193                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10194                         cmp->sreg1 = sp [0]->dreg;
10195                         type_from_op (cfg, cmp, sp [0], NULL);
10196                         CHECK_TYPE (cmp);
10197
10198 #if SIZEOF_REGISTER == 4
10199                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10200                                 /* Convert it to OP_LCOMPARE */
10201                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10202                                 ins->type = STACK_I8;
10203                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10204                                 ins->inst_l = 0;
10205                                 MONO_ADD_INS (cfg->cbb, ins);
10206                                 cmp->opcode = OP_LCOMPARE;
10207                                 cmp->sreg2 = ins->dreg;
10208                         }
10209 #endif
10210                         MONO_ADD_INS (cfg->cbb, cmp);
10211
10212                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10213                         type_from_op (cfg, ins, sp [0], NULL);
10214                         MONO_ADD_INS (cfg->cbb, ins);
10215                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10216                         GET_BBLOCK (cfg, tblock, target);
10217                         ins->inst_true_bb = tblock;
10218                         GET_BBLOCK (cfg, tblock, ip);
10219                         ins->inst_false_bb = tblock;
10220                         start_new_bblock = 2;
10221
10222                         sp = stack_start;
10223                         inline_costs += BRANCH_COST;
10224                         break;
10225                 }
10226                 case CEE_BEQ:
10227                 case CEE_BGE:
10228                 case CEE_BGT:
10229                 case CEE_BLE:
10230                 case CEE_BLT:
10231                 case CEE_BNE_UN:
10232                 case CEE_BGE_UN:
10233                 case CEE_BGT_UN:
10234                 case CEE_BLE_UN:
10235                 case CEE_BLT_UN:
10236                         CHECK_OPSIZE (5);
10237                         CHECK_STACK (2);
10238                         MONO_INST_NEW (cfg, ins, *ip);
10239                         ip++;
10240                         target = ip + 4 + (gint32)read32(ip);
10241                         ip += 4;
10242
10243                         ADD_BINCOND (NULL);
10244
10245                         sp = stack_start;
10246                         inline_costs += BRANCH_COST;
10247                         break;
10248                 case CEE_SWITCH: {
10249                         MonoInst *src1;
10250                         MonoBasicBlock **targets;
10251                         MonoBasicBlock *default_bblock;
10252                         MonoJumpInfoBBTable *table;
10253                         int offset_reg = alloc_preg (cfg);
10254                         int target_reg = alloc_preg (cfg);
10255                         int table_reg = alloc_preg (cfg);
10256                         int sum_reg = alloc_preg (cfg);
10257                         gboolean use_op_switch;
10258
10259                         CHECK_OPSIZE (5);
10260                         CHECK_STACK (1);
10261                         n = read32 (ip + 1);
10262                         --sp;
10263                         src1 = sp [0];
10264                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10265                                 UNVERIFIED;
10266
10267                         ip += 5;
10268                         CHECK_OPSIZE (n * sizeof (guint32));
10269                         target = ip + n * sizeof (guint32);
10270
10271                         GET_BBLOCK (cfg, default_bblock, target);
10272                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10273
10274                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10275                         for (i = 0; i < n; ++i) {
10276                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10277                                 targets [i] = tblock;
10278                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10279                                 ip += 4;
10280                         }
10281
10282                         if (sp != stack_start) {
10283                                 /*
10284                                  * Link the current bb with the targets as well, so handle_stack_args
10285                                  * will set their in_stack correctly.
10286                                  */
10287                                 link_bblock (cfg, cfg->cbb, default_bblock);
10288                                 for (i = 0; i < n; ++i)
10289                                         link_bblock (cfg, cfg->cbb, targets [i]);
10290
10291                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10292                                 sp = stack_start;
10293                                 CHECK_UNVERIFIABLE (cfg);
10294
10295                                 /* Undo the links */
10296                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10297                                 for (i = 0; i < n; ++i)
10298                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10299                         }
10300
10301                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10302                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10303
10304                         for (i = 0; i < n; ++i)
10305                                 link_bblock (cfg, cfg->cbb, targets [i]);
10306
10307                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10308                         table->table = targets;
10309                         table->table_size = n;
10310
10311                         use_op_switch = FALSE;
10312 #ifdef TARGET_ARM
10313                         /* ARM implements SWITCH statements differently */
10314                         /* FIXME: Make it use the generic implementation */
10315                         if (!cfg->compile_aot)
10316                                 use_op_switch = TRUE;
10317 #endif
10318
10319                         if (COMPILE_LLVM (cfg))
10320                                 use_op_switch = TRUE;
10321
10322                         cfg->cbb->has_jump_table = 1;
10323
10324                         if (use_op_switch) {
10325                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10326                                 ins->sreg1 = src1->dreg;
10327                                 ins->inst_p0 = table;
10328                                 ins->inst_many_bb = targets;
10329                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10330                                 MONO_ADD_INS (cfg->cbb, ins);
10331                         } else {
10332                                 if (sizeof (gpointer) == 8)
10333                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10334                                 else
10335                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10336
10337 #if SIZEOF_REGISTER == 8
10338                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10339                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10340 #endif
10341
10342                                 if (cfg->compile_aot) {
10343                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10344                                 } else {
10345                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10346                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10347                                         ins->inst_p0 = table;
10348                                         ins->dreg = table_reg;
10349                                         MONO_ADD_INS (cfg->cbb, ins);
10350                                 }
10351
10352                                 /* FIXME: Use load_memindex */
10353                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10354                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10355                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10356                         }
10357                         start_new_bblock = 1;
10358                         inline_costs += (BRANCH_COST * 2);
10359                         break;
10360                 }
10361                 case CEE_LDIND_I1:
10362                 case CEE_LDIND_U1:
10363                 case CEE_LDIND_I2:
10364                 case CEE_LDIND_U2:
10365                 case CEE_LDIND_I4:
10366                 case CEE_LDIND_U4:
10367                 case CEE_LDIND_I8:
10368                 case CEE_LDIND_I:
10369                 case CEE_LDIND_R4:
10370                 case CEE_LDIND_R8:
10371                 case CEE_LDIND_REF:
10372                         CHECK_STACK (1);
10373                         --sp;
10374
10375                         switch (*ip) {
10376                         case CEE_LDIND_R4:
10377                         case CEE_LDIND_R8:
10378                                 dreg = alloc_freg (cfg);
10379                                 break;
10380                         case CEE_LDIND_I8:
10381                                 dreg = alloc_lreg (cfg);
10382                                 break;
10383                         case CEE_LDIND_REF:
10384                                 dreg = alloc_ireg_ref (cfg);
10385                                 break;
10386                         default:
10387                                 dreg = alloc_preg (cfg);
10388                         }
10389
10390                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10391                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10392                         if (*ip == CEE_LDIND_R4)
10393                                 ins->type = cfg->r4_stack_type;
10394                         ins->flags |= ins_flag;
10395                         MONO_ADD_INS (cfg->cbb, ins);
10396                         *sp++ = ins;
10397                         if (ins_flag & MONO_INST_VOLATILE) {
10398                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10399                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10400                         }
10401                         ins_flag = 0;
10402                         ++ip;
10403                         break;
10404                 case CEE_STIND_REF:
10405                 case CEE_STIND_I1:
10406                 case CEE_STIND_I2:
10407                 case CEE_STIND_I4:
10408                 case CEE_STIND_I8:
10409                 case CEE_STIND_R4:
10410                 case CEE_STIND_R8:
10411                 case CEE_STIND_I:
10412                         CHECK_STACK (2);
10413                         sp -= 2;
10414
10415                         if (ins_flag & MONO_INST_VOLATILE) {
10416                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10417                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10418                         }
10419
10420                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10421                         ins->flags |= ins_flag;
10422                         ins_flag = 0;
10423
10424                         MONO_ADD_INS (cfg->cbb, ins);
10425
10426                         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)))
10427                                 emit_write_barrier (cfg, sp [0], sp [1]);
10428
10429                         inline_costs += 1;
10430                         ++ip;
10431                         break;
10432
10433                 case CEE_MUL:
10434                         CHECK_STACK (2);
10435
10436                         MONO_INST_NEW (cfg, ins, (*ip));
10437                         sp -= 2;
10438                         ins->sreg1 = sp [0]->dreg;
10439                         ins->sreg2 = sp [1]->dreg;
10440                         type_from_op (cfg, ins, sp [0], sp [1]);
10441                         CHECK_TYPE (ins);
10442                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10443
10444                         /* Use the immediate opcodes if possible */
10445                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10446                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10447                                 if (imm_opcode != -1) {
10448                                         ins->opcode = imm_opcode;
10449                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10450                                         ins->sreg2 = -1;
10451
10452                                         NULLIFY_INS (sp [1]);
10453                                 }
10454                         }
10455
10456                         MONO_ADD_INS ((cfg)->cbb, (ins));
10457
10458                         *sp++ = mono_decompose_opcode (cfg, ins);
10459                         ip++;
10460                         break;
10461                 case CEE_ADD:
10462                 case CEE_SUB:
10463                 case CEE_DIV:
10464                 case CEE_DIV_UN:
10465                 case CEE_REM:
10466                 case CEE_REM_UN:
10467                 case CEE_AND:
10468                 case CEE_OR:
10469                 case CEE_XOR:
10470                 case CEE_SHL:
10471                 case CEE_SHR:
10472                 case CEE_SHR_UN:
10473                         CHECK_STACK (2);
10474
10475                         MONO_INST_NEW (cfg, ins, (*ip));
10476                         sp -= 2;
10477                         ins->sreg1 = sp [0]->dreg;
10478                         ins->sreg2 = sp [1]->dreg;
10479                         type_from_op (cfg, ins, sp [0], sp [1]);
10480                         CHECK_TYPE (ins);
10481                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10482                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10483
10484                         /* FIXME: Pass opcode to is_inst_imm */
10485
10486                         /* Use the immediate opcodes if possible */
10487                         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)) {
10488                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10489                                 if (imm_opcode != -1) {
10490                                         ins->opcode = imm_opcode;
10491                                         if (sp [1]->opcode == OP_I8CONST) {
10492 #if SIZEOF_REGISTER == 8
10493                                                 ins->inst_imm = sp [1]->inst_l;
10494 #else
10495                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10496                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10497 #endif
10498                                         }
10499                                         else
10500                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10501                                         ins->sreg2 = -1;
10502
10503                                         /* Might be followed by an instruction added by add_widen_op */
10504                                         if (sp [1]->next == NULL)
10505                                                 NULLIFY_INS (sp [1]);
10506                                 }
10507                         }
10508                         MONO_ADD_INS ((cfg)->cbb, (ins));
10509
10510                         *sp++ = mono_decompose_opcode (cfg, ins);
10511                         ip++;
10512                         break;
10513                 case CEE_NEG:
10514                 case CEE_NOT:
10515                 case CEE_CONV_I1:
10516                 case CEE_CONV_I2:
10517                 case CEE_CONV_I4:
10518                 case CEE_CONV_R4:
10519                 case CEE_CONV_R8:
10520                 case CEE_CONV_U4:
10521                 case CEE_CONV_I8:
10522                 case CEE_CONV_U8:
10523                 case CEE_CONV_OVF_I8:
10524                 case CEE_CONV_OVF_U8:
10525                 case CEE_CONV_R_UN:
10526                         CHECK_STACK (1);
10527
10528                         /* Special case this earlier so we have long constants in the IR */
10529                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10530                                 int data = sp [-1]->inst_c0;
10531                                 sp [-1]->opcode = OP_I8CONST;
10532                                 sp [-1]->type = STACK_I8;
10533 #if SIZEOF_REGISTER == 8
10534                                 if ((*ip) == CEE_CONV_U8)
10535                                         sp [-1]->inst_c0 = (guint32)data;
10536                                 else
10537                                         sp [-1]->inst_c0 = data;
10538 #else
10539                                 sp [-1]->inst_ls_word = data;
10540                                 if ((*ip) == CEE_CONV_U8)
10541                                         sp [-1]->inst_ms_word = 0;
10542                                 else
10543                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10544 #endif
10545                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10546                         }
10547                         else {
10548                                 ADD_UNOP (*ip);
10549                         }
10550                         ip++;
10551                         break;
10552                 case CEE_CONV_OVF_I4:
10553                 case CEE_CONV_OVF_I1:
10554                 case CEE_CONV_OVF_I2:
10555                 case CEE_CONV_OVF_I:
10556                 case CEE_CONV_OVF_U:
10557                         CHECK_STACK (1);
10558
10559                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10560                                 ADD_UNOP (CEE_CONV_OVF_I8);
10561                                 ADD_UNOP (*ip);
10562                         } else {
10563                                 ADD_UNOP (*ip);
10564                         }
10565                         ip++;
10566                         break;
10567                 case CEE_CONV_OVF_U1:
10568                 case CEE_CONV_OVF_U2:
10569                 case CEE_CONV_OVF_U4:
10570                         CHECK_STACK (1);
10571
10572                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10573                                 ADD_UNOP (CEE_CONV_OVF_U8);
10574                                 ADD_UNOP (*ip);
10575                         } else {
10576                                 ADD_UNOP (*ip);
10577                         }
10578                         ip++;
10579                         break;
10580                 case CEE_CONV_OVF_I1_UN:
10581                 case CEE_CONV_OVF_I2_UN:
10582                 case CEE_CONV_OVF_I4_UN:
10583                 case CEE_CONV_OVF_I8_UN:
10584                 case CEE_CONV_OVF_U1_UN:
10585                 case CEE_CONV_OVF_U2_UN:
10586                 case CEE_CONV_OVF_U4_UN:
10587                 case CEE_CONV_OVF_U8_UN:
10588                 case CEE_CONV_OVF_I_UN:
10589                 case CEE_CONV_OVF_U_UN:
10590                 case CEE_CONV_U2:
10591                 case CEE_CONV_U1:
10592                 case CEE_CONV_I:
10593                 case CEE_CONV_U:
10594                         CHECK_STACK (1);
10595                         ADD_UNOP (*ip);
10596                         CHECK_CFG_EXCEPTION;
10597                         ip++;
10598                         break;
10599                 case CEE_ADD_OVF:
10600                 case CEE_ADD_OVF_UN:
10601                 case CEE_MUL_OVF:
10602                 case CEE_MUL_OVF_UN:
10603                 case CEE_SUB_OVF:
10604                 case CEE_SUB_OVF_UN:
10605                         CHECK_STACK (2);
10606                         ADD_BINOP (*ip);
10607                         ip++;
10608                         break;
10609                 case CEE_CPOBJ:
10610                         GSHAREDVT_FAILURE (*ip);
10611                         CHECK_OPSIZE (5);
10612                         CHECK_STACK (2);
10613                         token = read32 (ip + 1);
10614                         klass = mini_get_class (method, token, generic_context);
10615                         CHECK_TYPELOAD (klass);
10616                         sp -= 2;
10617                         if (generic_class_is_reference_type (cfg, klass)) {
10618                                 MonoInst *store, *load;
10619                                 int dreg = alloc_ireg_ref (cfg);
10620
10621                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10622                                 load->flags |= ins_flag;
10623                                 MONO_ADD_INS (cfg->cbb, load);
10624
10625                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10626                                 store->flags |= ins_flag;
10627                                 MONO_ADD_INS (cfg->cbb, store);
10628
10629                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10630                                         emit_write_barrier (cfg, sp [0], sp [1]);
10631                         } else {
10632                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10633                         }
10634                         ins_flag = 0;
10635                         ip += 5;
10636                         break;
10637                 case CEE_LDOBJ: {
10638                         int loc_index = -1;
10639                         int stloc_len = 0;
10640
10641                         CHECK_OPSIZE (5);
10642                         CHECK_STACK (1);
10643                         --sp;
10644                         token = read32 (ip + 1);
10645                         klass = mini_get_class (method, token, generic_context);
10646                         CHECK_TYPELOAD (klass);
10647
10648                         /* Optimize the common ldobj+stloc combination */
10649                         switch (ip [5]) {
10650                         case CEE_STLOC_S:
10651                                 loc_index = ip [6];
10652                                 stloc_len = 2;
10653                                 break;
10654                         case CEE_STLOC_0:
10655                         case CEE_STLOC_1:
10656                         case CEE_STLOC_2:
10657                         case CEE_STLOC_3:
10658                                 loc_index = ip [5] - CEE_STLOC_0;
10659                                 stloc_len = 1;
10660                                 break;
10661                         default:
10662                                 break;
10663                         }
10664
10665                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10666                                 CHECK_LOCAL (loc_index);
10667
10668                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10669                                 ins->dreg = cfg->locals [loc_index]->dreg;
10670                                 ins->flags |= ins_flag;
10671                                 ip += 5;
10672                                 ip += stloc_len;
10673                                 if (ins_flag & MONO_INST_VOLATILE) {
10674                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10675                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10676                                 }
10677                                 ins_flag = 0;
10678                                 break;
10679                         }
10680
10681                         /* Optimize the ldobj+stobj combination */
10682                         /* The reference case ends up being a load+store anyway */
10683                         /* Skip this if the operation is volatile. */
10684                         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)) {
10685                                 CHECK_STACK (1);
10686
10687                                 sp --;
10688
10689                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10690
10691                                 ip += 5 + 5;
10692                                 ins_flag = 0;
10693                                 break;
10694                         }
10695
10696                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10697                         ins->flags |= ins_flag;
10698                         *sp++ = ins;
10699
10700                         if (ins_flag & MONO_INST_VOLATILE) {
10701                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10702                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10703                         }
10704
10705                         ip += 5;
10706                         ins_flag = 0;
10707                         inline_costs += 1;
10708                         break;
10709                 }
10710                 case CEE_LDSTR:
10711                         CHECK_STACK_OVF (1);
10712                         CHECK_OPSIZE (5);
10713                         n = read32 (ip + 1);
10714
10715                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10716                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10717                                 ins->type = STACK_OBJ;
10718                                 *sp = ins;
10719                         }
10720                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10721                                 MonoInst *iargs [1];
10722                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10723
10724                                 if (cfg->compile_aot)
10725                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10726                                 else
10727                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10728                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10729                         } else {
10730                                 if (cfg->opt & MONO_OPT_SHARED) {
10731                                         MonoInst *iargs [3];
10732
10733                                         if (cfg->compile_aot) {
10734                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10735                                         }
10736                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10737                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10738                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10739                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10740                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10741                                 } else {
10742                                         if (cfg->cbb->out_of_line) {
10743                                                 MonoInst *iargs [2];
10744
10745                                                 if (image == mono_defaults.corlib) {
10746                                                         /*
10747                                                          * Avoid relocations in AOT and save some space by using a
10748                                                          * version of helper_ldstr specialized to mscorlib.
10749                                                          */
10750                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10751                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10752                                                 } else {
10753                                                         /* Avoid creating the string object */
10754                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10755                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10756                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10757                                                 }
10758                                         }
10759                                         else
10760                                         if (cfg->compile_aot) {
10761                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10762                                                 *sp = ins;
10763                                                 MONO_ADD_INS (cfg->cbb, ins);
10764                                         }
10765                                         else {
10766                                                 NEW_PCONST (cfg, ins, NULL);
10767                                                 ins->type = STACK_OBJ;
10768                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10769                                                 if (!ins->inst_p0)
10770                                                         OUT_OF_MEMORY_FAILURE;
10771
10772                                                 *sp = ins;
10773                                                 MONO_ADD_INS (cfg->cbb, ins);
10774                                         }
10775                                 }
10776                         }
10777
10778                         sp++;
10779                         ip += 5;
10780                         break;
10781                 case CEE_NEWOBJ: {
10782                         MonoInst *iargs [2];
10783                         MonoMethodSignature *fsig;
10784                         MonoInst this_ins;
10785                         MonoInst *alloc;
10786                         MonoInst *vtable_arg = NULL;
10787
10788                         CHECK_OPSIZE (5);
10789                         token = read32 (ip + 1);
10790                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10791                         CHECK_CFG_ERROR;
10792
10793                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10794                         CHECK_CFG_ERROR;
10795
10796                         mono_save_token_info (cfg, image, token, cmethod);
10797
10798                         if (!mono_class_init (cmethod->klass))
10799                                 TYPE_LOAD_ERROR (cmethod->klass);
10800
10801                         context_used = mini_method_check_context_used (cfg, cmethod);
10802
10803                         if (mono_security_core_clr_enabled ())
10804                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10805
10806                         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)) {
10807                                 emit_class_init (cfg, cmethod->klass);
10808                                 CHECK_TYPELOAD (cmethod->klass);
10809                         }
10810
10811                         /*
10812                         if (cfg->gsharedvt) {
10813                                 if (mini_is_gsharedvt_variable_signature (sig))
10814                                         GSHAREDVT_FAILURE (*ip);
10815                         }
10816                         */
10817
10818                         n = fsig->param_count;
10819                         CHECK_STACK (n);
10820
10821                         /*
10822                          * Generate smaller code for the common newobj <exception> instruction in
10823                          * argument checking code.
10824                          */
10825                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10826                                 is_exception_class (cmethod->klass) && n <= 2 &&
10827                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10828                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10829                                 MonoInst *iargs [3];
10830
10831                                 sp -= n;
10832
10833                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10834                                 switch (n) {
10835                                 case 0:
10836                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10837                                         break;
10838                                 case 1:
10839                                         iargs [1] = sp [0];
10840                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10841                                         break;
10842                                 case 2:
10843                                         iargs [1] = sp [0];
10844                                         iargs [2] = sp [1];
10845                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10846                                         break;
10847                                 default:
10848                                         g_assert_not_reached ();
10849                                 }
10850
10851                                 ip += 5;
10852                                 inline_costs += 5;
10853                                 break;
10854                         }
10855
10856                         /* move the args to allow room for 'this' in the first position */
10857                         while (n--) {
10858                                 --sp;
10859                                 sp [1] = sp [0];
10860                         }
10861
10862                         /* check_call_signature () requires sp[0] to be set */
10863                         this_ins.type = STACK_OBJ;
10864                         sp [0] = &this_ins;
10865                         if (check_call_signature (cfg, fsig, sp))
10866                                 UNVERIFIED;
10867
10868                         iargs [0] = NULL;
10869
10870                         if (mini_class_is_system_array (cmethod->klass)) {
10871                                 *sp = emit_get_rgctx_method (cfg, context_used,
10872                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10873
10874                                 /* Avoid varargs in the common case */
10875                                 if (fsig->param_count == 1)
10876                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10877                                 else if (fsig->param_count == 2)
10878                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10879                                 else if (fsig->param_count == 3)
10880                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10881                                 else if (fsig->param_count == 4)
10882                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10883                                 else
10884                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10885                         } else if (cmethod->string_ctor) {
10886                                 g_assert (!context_used);
10887                                 g_assert (!vtable_arg);
10888                                 /* we simply pass a null pointer */
10889                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10890                                 /* now call the string ctor */
10891                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10892                         } else {
10893                                 if (cmethod->klass->valuetype) {
10894                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10895                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10896                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10897
10898                                         alloc = NULL;
10899
10900                                         /*
10901                                          * The code generated by mini_emit_virtual_call () expects
10902                                          * iargs [0] to be a boxed instance, but luckily the vcall
10903                                          * will be transformed into a normal call there.
10904                                          */
10905                                 } else if (context_used) {
10906                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10907                                         *sp = alloc;
10908                                 } else {
10909                                         MonoVTable *vtable = NULL;
10910
10911                                         if (!cfg->compile_aot)
10912                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10913                                         CHECK_TYPELOAD (cmethod->klass);
10914
10915                                         /*
10916                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10917                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10918                                          * As a workaround, we call class cctors before allocating objects.
10919                                          */
10920                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10921                                                 emit_class_init (cfg, cmethod->klass);
10922                                                 if (cfg->verbose_level > 2)
10923                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10924                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10925                                         }
10926
10927                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10928                                         *sp = alloc;
10929                                 }
10930                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10931
10932                                 if (alloc)
10933                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10934
10935                                 /* Now call the actual ctor */
10936                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10937                                 CHECK_CFG_EXCEPTION;
10938                         }
10939
10940                         if (alloc == NULL) {
10941                                 /* Valuetype */
10942                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10943                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10944                                 *sp++= ins;
10945                         } else {
10946                                 *sp++ = alloc;
10947                         }
10948
10949                         ip += 5;
10950                         inline_costs += 5;
10951                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10952                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10953                         break;
10954                 }
10955                 case CEE_CASTCLASS:
10956                         CHECK_STACK (1);
10957                         --sp;
10958                         CHECK_OPSIZE (5);
10959                         token = read32 (ip + 1);
10960                         klass = mini_get_class (method, token, generic_context);
10961                         CHECK_TYPELOAD (klass);
10962                         if (sp [0]->type != STACK_OBJ)
10963                                 UNVERIFIED;
10964
10965                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10966                         CHECK_CFG_EXCEPTION;
10967
10968                         *sp ++ = ins;
10969                         ip += 5;
10970                         break;
10971                 case CEE_ISINST: {
10972                         CHECK_STACK (1);
10973                         --sp;
10974                         CHECK_OPSIZE (5);
10975                         token = read32 (ip + 1);
10976                         klass = mini_get_class (method, token, generic_context);
10977                         CHECK_TYPELOAD (klass);
10978                         if (sp [0]->type != STACK_OBJ)
10979                                 UNVERIFIED;
10980
10981                         context_used = mini_class_check_context_used (cfg, klass);
10982
10983                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10984                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10985                                 MonoInst *args [3];
10986                                 int idx;
10987
10988                                 /* obj */
10989                                 args [0] = *sp;
10990
10991                                 /* klass */
10992                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10993
10994                                 /* inline cache*/
10995                                 idx = get_castclass_cache_idx (cfg);
10996                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
10997
10998                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
10999                                 ip += 5;
11000                                 inline_costs += 2;
11001                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
11002                                 MonoMethod *mono_isinst;
11003                                 MonoInst *iargs [1];
11004                                 int costs;
11005
11006                                 mono_isinst = mono_marshal_get_isinst (klass);
11007                                 iargs [0] = sp [0];
11008
11009                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
11010                                                                            iargs, ip, cfg->real_offset, TRUE);
11011                                 CHECK_CFG_EXCEPTION;
11012                                 g_assert (costs > 0);
11013
11014                                 ip += 5;
11015                                 cfg->real_offset += 5;
11016
11017                                 *sp++= iargs [0];
11018
11019                                 inline_costs += costs;
11020                         }
11021                         else {
11022                                 ins = handle_isinst (cfg, klass, *sp, context_used);
11023                                 CHECK_CFG_EXCEPTION;
11024                                 *sp ++ = ins;
11025                                 ip += 5;
11026                         }
11027                         break;
11028                 }
11029                 case CEE_UNBOX_ANY: {
11030                         MonoInst *res, *addr;
11031
11032                         CHECK_STACK (1);
11033                         --sp;
11034                         CHECK_OPSIZE (5);
11035                         token = read32 (ip + 1);
11036                         klass = mini_get_class (method, token, generic_context);
11037                         CHECK_TYPELOAD (klass);
11038
11039                         mono_save_token_info (cfg, image, token, klass);
11040
11041                         context_used = mini_class_check_context_used (cfg, klass);
11042
11043                         if (mini_is_gsharedvt_klass (klass)) {
11044                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11045                                 inline_costs += 2;
11046                         } else if (generic_class_is_reference_type (cfg, klass)) {
11047                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
11048                                 CHECK_CFG_EXCEPTION;
11049                         } else if (mono_class_is_nullable (klass)) {
11050                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11051                         } else {
11052                                 addr = handle_unbox (cfg, klass, sp, context_used);
11053                                 /* LDOBJ */
11054                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11055                                 res = ins;
11056                                 inline_costs += 2;
11057                         }
11058
11059                         *sp ++ = res;
11060                         ip += 5;
11061                         break;
11062                 }
11063                 case CEE_BOX: {
11064                         MonoInst *val;
11065                         MonoClass *enum_class;
11066                         MonoMethod *has_flag;
11067
11068                         CHECK_STACK (1);
11069                         --sp;
11070                         val = *sp;
11071                         CHECK_OPSIZE (5);
11072                         token = read32 (ip + 1);
11073                         klass = mini_get_class (method, token, generic_context);
11074                         CHECK_TYPELOAD (klass);
11075
11076                         mono_save_token_info (cfg, image, token, klass);
11077
11078                         context_used = mini_class_check_context_used (cfg, klass);
11079
11080                         if (generic_class_is_reference_type (cfg, klass)) {
11081                                 *sp++ = val;
11082                                 ip += 5;
11083                                 break;
11084                         }
11085
11086                         if (klass == mono_defaults.void_class)
11087                                 UNVERIFIED;
11088                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11089                                 UNVERIFIED;
11090                         /* frequent check in generic code: box (struct), brtrue */
11091
11092                         /*
11093                          * Look for:
11094                          *
11095                          *   <push int/long ptr>
11096                          *   <push int/long>
11097                          *   box MyFlags
11098                          *   constrained. MyFlags
11099                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11100                          *
11101                          * If we find this sequence and the operand types on box and constrained
11102                          * are equal, we can emit a specialized instruction sequence instead of
11103                          * the very slow HasFlag () call.
11104                          */
11105                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11106                             /* Cheap checks first. */
11107                             ip + 5 + 6 + 5 < end &&
11108                             ip [5] == CEE_PREFIX1 &&
11109                             ip [6] == CEE_CONSTRAINED_ &&
11110                             ip [11] == CEE_CALLVIRT &&
11111                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11112                             mono_class_is_enum (klass) &&
11113                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11114                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11115                             has_flag->klass == mono_defaults.enum_class &&
11116                             !strcmp (has_flag->name, "HasFlag") &&
11117                             has_flag->signature->hasthis &&
11118                             has_flag->signature->param_count == 1) {
11119                                 CHECK_TYPELOAD (enum_class);
11120
11121                                 if (enum_class == klass) {
11122                                         MonoInst *enum_this, *enum_flag;
11123
11124                                         ip += 5 + 6 + 5;
11125                                         --sp;
11126
11127                                         enum_this = sp [0];
11128                                         enum_flag = sp [1];
11129
11130                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11131                                         break;
11132                                 }
11133                         }
11134
11135                         // FIXME: LLVM can't handle the inconsistent bb linking
11136                         if (!mono_class_is_nullable (klass) &&
11137                                 !mini_is_gsharedvt_klass (klass) &&
11138                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11139                                 (ip [5] == CEE_BRTRUE ||
11140                                  ip [5] == CEE_BRTRUE_S ||
11141                                  ip [5] == CEE_BRFALSE ||
11142                                  ip [5] == CEE_BRFALSE_S)) {
11143                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11144                                 int dreg;
11145                                 MonoBasicBlock *true_bb, *false_bb;
11146
11147                                 ip += 5;
11148
11149                                 if (cfg->verbose_level > 3) {
11150                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11151                                         printf ("<box+brtrue opt>\n");
11152                                 }
11153
11154                                 switch (*ip) {
11155                                 case CEE_BRTRUE_S:
11156                                 case CEE_BRFALSE_S:
11157                                         CHECK_OPSIZE (2);
11158                                         ip++;
11159                                         target = ip + 1 + (signed char)(*ip);
11160                                         ip++;
11161                                         break;
11162                                 case CEE_BRTRUE:
11163                                 case CEE_BRFALSE:
11164                                         CHECK_OPSIZE (5);
11165                                         ip++;
11166                                         target = ip + 4 + (gint)(read32 (ip));
11167                                         ip += 4;
11168                                         break;
11169                                 default:
11170                                         g_assert_not_reached ();
11171                                 }
11172
11173                                 /*
11174                                  * We need to link both bblocks, since it is needed for handling stack
11175                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11176                                  * Branching to only one of them would lead to inconsistencies, so
11177                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11178                                  */
11179                                 GET_BBLOCK (cfg, true_bb, target);
11180                                 GET_BBLOCK (cfg, false_bb, ip);
11181
11182                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11183                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11184
11185                                 if (sp != stack_start) {
11186                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11187                                         sp = stack_start;
11188                                         CHECK_UNVERIFIABLE (cfg);
11189                                 }
11190
11191                                 if (COMPILE_LLVM (cfg)) {
11192                                         dreg = alloc_ireg (cfg);
11193                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11194                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11195
11196                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11197                                 } else {
11198                                         /* The JIT can't eliminate the iconst+compare */
11199                                         MONO_INST_NEW (cfg, ins, OP_BR);
11200                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11201                                         MONO_ADD_INS (cfg->cbb, ins);
11202                                 }
11203
11204                                 start_new_bblock = 1;
11205                                 break;
11206                         }
11207
11208                         *sp++ = handle_box (cfg, val, klass, context_used);
11209
11210                         CHECK_CFG_EXCEPTION;
11211                         ip += 5;
11212                         inline_costs += 1;
11213                         break;
11214                 }
11215                 case CEE_UNBOX: {
11216                         CHECK_STACK (1);
11217                         --sp;
11218                         CHECK_OPSIZE (5);
11219                         token = read32 (ip + 1);
11220                         klass = mini_get_class (method, token, generic_context);
11221                         CHECK_TYPELOAD (klass);
11222
11223                         mono_save_token_info (cfg, image, token, klass);
11224
11225                         context_used = mini_class_check_context_used (cfg, klass);
11226
11227                         if (mono_class_is_nullable (klass)) {
11228                                 MonoInst *val;
11229
11230                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11231                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11232
11233                                 *sp++= ins;
11234                         } else {
11235                                 ins = handle_unbox (cfg, klass, sp, context_used);
11236                                 *sp++ = ins;
11237                         }
11238                         ip += 5;
11239                         inline_costs += 2;
11240                         break;
11241                 }
11242                 case CEE_LDFLD:
11243                 case CEE_LDFLDA:
11244                 case CEE_STFLD:
11245                 case CEE_LDSFLD:
11246                 case CEE_LDSFLDA:
11247                 case CEE_STSFLD: {
11248                         MonoClassField *field;
11249 #ifndef DISABLE_REMOTING
11250                         int costs;
11251 #endif
11252                         guint foffset;
11253                         gboolean is_instance;
11254                         int op;
11255                         gpointer addr = NULL;
11256                         gboolean is_special_static;
11257                         MonoType *ftype;
11258                         MonoInst *store_val = NULL;
11259                         MonoInst *thread_ins;
11260
11261                         op = *ip;
11262                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11263                         if (is_instance) {
11264                                 if (op == CEE_STFLD) {
11265                                         CHECK_STACK (2);
11266                                         sp -= 2;
11267                                         store_val = sp [1];
11268                                 } else {
11269                                         CHECK_STACK (1);
11270                                         --sp;
11271                                 }
11272                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11273                                         UNVERIFIED;
11274                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11275                                         UNVERIFIED;
11276                         } else {
11277                                 if (op == CEE_STSFLD) {
11278                                         CHECK_STACK (1);
11279                                         sp--;
11280                                         store_val = sp [0];
11281                                 }
11282                         }
11283
11284                         CHECK_OPSIZE (5);
11285                         token = read32 (ip + 1);
11286                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11287                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11288                                 klass = field->parent;
11289                         }
11290                         else {
11291                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11292                                 CHECK_CFG_ERROR;
11293                         }
11294                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11295                                 FIELD_ACCESS_FAILURE (method, field);
11296                         mono_class_init (klass);
11297
11298                         /* if the class is Critical then transparent code cannot access it's fields */
11299                         if (!is_instance && mono_security_core_clr_enabled ())
11300                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11301
11302                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11303                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11304                         if (mono_security_core_clr_enabled ())
11305                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11306                         */
11307
11308                         ftype = mono_field_get_type (field);
11309
11310                         /*
11311                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11312                          * the static case.
11313                          */
11314                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11315                                 switch (op) {
11316                                 case CEE_LDFLD:
11317                                         op = CEE_LDSFLD;
11318                                         break;
11319                                 case CEE_STFLD:
11320                                         op = CEE_STSFLD;
11321                                         break;
11322                                 case CEE_LDFLDA:
11323                                         op = CEE_LDSFLDA;
11324                                         break;
11325                                 default:
11326                                         g_assert_not_reached ();
11327                                 }
11328                                 is_instance = FALSE;
11329                         }
11330
11331                         context_used = mini_class_check_context_used (cfg, klass);
11332
11333                         /* INSTANCE CASE */
11334
11335                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11336                         if (op == CEE_STFLD) {
11337                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11338                                         UNVERIFIED;
11339 #ifndef DISABLE_REMOTING
11340                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11341                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11342                                         MonoInst *iargs [5];
11343
11344                                         GSHAREDVT_FAILURE (op);
11345
11346                                         iargs [0] = sp [0];
11347                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11348                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11349                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11350                                                     field->offset);
11351                                         iargs [4] = sp [1];
11352
11353                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11354                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11355                                                                                            iargs, ip, cfg->real_offset, TRUE);
11356                                                 CHECK_CFG_EXCEPTION;
11357                                                 g_assert (costs > 0);
11358
11359                                                 cfg->real_offset += 5;
11360
11361                                                 inline_costs += costs;
11362                                         } else {
11363                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11364                                         }
11365                                 } else
11366 #endif
11367                                 {
11368                                         MonoInst *store;
11369
11370                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11371
11372                                         if (mini_is_gsharedvt_klass (klass)) {
11373                                                 MonoInst *offset_ins;
11374
11375                                                 context_used = mini_class_check_context_used (cfg, klass);
11376
11377                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11378                                                 /* The value is offset by 1 */
11379                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11380                                                 dreg = alloc_ireg_mp (cfg);
11381                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11382                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11383                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11384                                         } else {
11385                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11386                                         }
11387                                         if (sp [0]->opcode != OP_LDADDR)
11388                                                 store->flags |= MONO_INST_FAULT;
11389
11390                                 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)) {
11391                                         /* insert call to write barrier */
11392                                         MonoInst *ptr;
11393                                         int dreg;
11394
11395                                         dreg = alloc_ireg_mp (cfg);
11396                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11397                                         emit_write_barrier (cfg, ptr, sp [1]);
11398                                 }
11399
11400                                         store->flags |= ins_flag;
11401                                 }
11402                                 ins_flag = 0;
11403                                 ip += 5;
11404                                 break;
11405                         }
11406
11407 #ifndef DISABLE_REMOTING
11408                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11409                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11410                                 MonoInst *iargs [4];
11411
11412                                 GSHAREDVT_FAILURE (op);
11413
11414                                 iargs [0] = sp [0];
11415                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11416                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11417                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11418                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11419                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11420                                                                                    iargs, ip, cfg->real_offset, TRUE);
11421                                         CHECK_CFG_EXCEPTION;
11422                                         g_assert (costs > 0);
11423
11424                                         cfg->real_offset += 5;
11425
11426                                         *sp++ = iargs [0];
11427
11428                                         inline_costs += costs;
11429                                 } else {
11430                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11431                                         *sp++ = ins;
11432                                 }
11433                         } else
11434 #endif
11435                         if (is_instance) {
11436                                 if (sp [0]->type == STACK_VTYPE) {
11437                                         MonoInst *var;
11438
11439                                         /* Have to compute the address of the variable */
11440
11441                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11442                                         if (!var)
11443                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11444                                         else
11445                                                 g_assert (var->klass == klass);
11446
11447                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11448                                         sp [0] = ins;
11449                                 }
11450
11451                                 if (op == CEE_LDFLDA) {
11452                                         if (sp [0]->type == STACK_OBJ) {
11453                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11454                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11455                                         }
11456
11457                                         dreg = alloc_ireg_mp (cfg);
11458
11459                                         if (mini_is_gsharedvt_klass (klass)) {
11460                                                 MonoInst *offset_ins;
11461
11462                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11463                                                 /* The value is offset by 1 */
11464                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11465                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11466                                         } else {
11467                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11468                                         }
11469                                         ins->klass = mono_class_from_mono_type (field->type);
11470                                         ins->type = STACK_MP;
11471                                         *sp++ = ins;
11472                                 } else {
11473                                         MonoInst *load;
11474
11475                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11476
11477                                         if (mini_is_gsharedvt_klass (klass)) {
11478                                                 MonoInst *offset_ins;
11479
11480                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11481                                                 /* The value is offset by 1 */
11482                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11483                                                 dreg = alloc_ireg_mp (cfg);
11484                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11485                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11486                                         } else {
11487                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11488                                         }
11489                                         load->flags |= ins_flag;
11490                                         if (sp [0]->opcode != OP_LDADDR)
11491                                                 load->flags |= MONO_INST_FAULT;
11492                                         *sp++ = load;
11493                                 }
11494                         }
11495
11496                         if (is_instance) {
11497                                 ins_flag = 0;
11498                                 ip += 5;
11499                                 break;
11500                         }
11501
11502                         /* STATIC CASE */
11503                         context_used = mini_class_check_context_used (cfg, klass);
11504
11505                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11506                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11507                                 CHECK_CFG_ERROR;
11508                         }
11509
11510                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11511                          * to be called here.
11512                          */
11513                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11514                                 mono_class_vtable (cfg->domain, klass);
11515                                 CHECK_TYPELOAD (klass);
11516                         }
11517                         mono_domain_lock (cfg->domain);
11518                         if (cfg->domain->special_static_fields)
11519                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11520                         mono_domain_unlock (cfg->domain);
11521
11522                         is_special_static = mono_class_field_is_special_static (field);
11523
11524                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11525                                 thread_ins = mono_get_thread_intrinsic (cfg);
11526                         else
11527                                 thread_ins = NULL;
11528
11529                         /* Generate IR to compute the field address */
11530                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11531                                 /*
11532                                  * Fast access to TLS data
11533                                  * Inline version of get_thread_static_data () in
11534                                  * threads.c.
11535                                  */
11536                                 guint32 offset;
11537                                 int idx, static_data_reg, array_reg, dreg;
11538
11539                                 GSHAREDVT_FAILURE (op);
11540
11541                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11542                                 static_data_reg = alloc_ireg (cfg);
11543                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11544
11545                                 if (cfg->compile_aot) {
11546                                         int offset_reg, offset2_reg, idx_reg;
11547
11548                                         /* For TLS variables, this will return the TLS offset */
11549                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11550                                         offset_reg = ins->dreg;
11551                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11552                                         idx_reg = alloc_ireg (cfg);
11553                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11554                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11555                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11556                                         array_reg = alloc_ireg (cfg);
11557                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11558                                         offset2_reg = alloc_ireg (cfg);
11559                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11560                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11561                                         dreg = alloc_ireg (cfg);
11562                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11563                                 } else {
11564                                         offset = (gsize)addr & 0x7fffffff;
11565                                         idx = offset & 0x3f;
11566
11567                                         array_reg = alloc_ireg (cfg);
11568                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11569                                         dreg = alloc_ireg (cfg);
11570                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11571                                 }
11572                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11573                                         (cfg->compile_aot && is_special_static) ||
11574                                         (context_used && is_special_static)) {
11575                                 MonoInst *iargs [2];
11576
11577                                 g_assert (field->parent);
11578                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11579                                 if (context_used) {
11580                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11581                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11582                                 } else {
11583                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11584                                 }
11585                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11586                         } else if (context_used) {
11587                                 MonoInst *static_data;
11588
11589                                 /*
11590                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11591                                         method->klass->name_space, method->klass->name, method->name,
11592                                         depth, field->offset);
11593                                 */
11594
11595                                 if (mono_class_needs_cctor_run (klass, method))
11596                                         emit_class_init (cfg, klass);
11597
11598                                 /*
11599                                  * The pointer we're computing here is
11600                                  *
11601                                  *   super_info.static_data + field->offset
11602                                  */
11603                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11604                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11605
11606                                 if (mini_is_gsharedvt_klass (klass)) {
11607                                         MonoInst *offset_ins;
11608
11609                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11610                                         /* The value is offset by 1 */
11611                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11612                                         dreg = alloc_ireg_mp (cfg);
11613                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11614                                 } else if (field->offset == 0) {
11615                                         ins = static_data;
11616                                 } else {
11617                                         int addr_reg = mono_alloc_preg (cfg);
11618                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11619                                 }
11620                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11621                                 MonoInst *iargs [2];
11622
11623                                 g_assert (field->parent);
11624                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11625                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11626                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11627                         } else {
11628                                 MonoVTable *vtable = NULL;
11629
11630                                 if (!cfg->compile_aot)
11631                                         vtable = mono_class_vtable (cfg->domain, klass);
11632                                 CHECK_TYPELOAD (klass);
11633
11634                                 if (!addr) {
11635                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11636                                                 if (!(g_slist_find (class_inits, klass))) {
11637                                                         emit_class_init (cfg, klass);
11638                                                         if (cfg->verbose_level > 2)
11639                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11640                                                         class_inits = g_slist_prepend (class_inits, klass);
11641                                                 }
11642                                         } else {
11643                                                 if (cfg->run_cctors) {
11644                                                         /* This makes so that inline cannot trigger */
11645                                                         /* .cctors: too many apps depend on them */
11646                                                         /* running with a specific order... */
11647                                                         g_assert (vtable);
11648                                                         if (! vtable->initialized)
11649                                                                 INLINE_FAILURE ("class init");
11650                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11651                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11652                                                                 goto exception_exit;
11653                                                         }
11654                                                 }
11655                                         }
11656                                         if (cfg->compile_aot)
11657                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11658                                         else {
11659                                                 g_assert (vtable);
11660                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11661                                                 g_assert (addr);
11662                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11663                                         }
11664                                 } else {
11665                                         MonoInst *iargs [1];
11666                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11667                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11668                                 }
11669                         }
11670
11671                         /* Generate IR to do the actual load/store operation */
11672
11673                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11674                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11675                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11676                         }
11677
11678                         if (op == CEE_LDSFLDA) {
11679                                 ins->klass = mono_class_from_mono_type (ftype);
11680                                 ins->type = STACK_PTR;
11681                                 *sp++ = ins;
11682                         } else if (op == CEE_STSFLD) {
11683                                 MonoInst *store;
11684
11685                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11686                                 store->flags |= ins_flag;
11687                         } else {
11688                                 gboolean is_const = FALSE;
11689                                 MonoVTable *vtable = NULL;
11690                                 gpointer addr = NULL;
11691
11692                                 if (!context_used) {
11693                                         vtable = mono_class_vtable (cfg->domain, klass);
11694                                         CHECK_TYPELOAD (klass);
11695                                 }
11696                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11697                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11698                                         int ro_type = ftype->type;
11699                                         if (!addr)
11700                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11701                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11702                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11703                                         }
11704
11705                                         GSHAREDVT_FAILURE (op);
11706
11707                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11708                                         is_const = TRUE;
11709                                         switch (ro_type) {
11710                                         case MONO_TYPE_BOOLEAN:
11711                                         case MONO_TYPE_U1:
11712                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11713                                                 sp++;
11714                                                 break;
11715                                         case MONO_TYPE_I1:
11716                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11717                                                 sp++;
11718                                                 break;
11719                                         case MONO_TYPE_CHAR:
11720                                         case MONO_TYPE_U2:
11721                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11722                                                 sp++;
11723                                                 break;
11724                                         case MONO_TYPE_I2:
11725                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11726                                                 sp++;
11727                                                 break;
11728                                                 break;
11729                                         case MONO_TYPE_I4:
11730                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11731                                                 sp++;
11732                                                 break;
11733                                         case MONO_TYPE_U4:
11734                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11735                                                 sp++;
11736                                                 break;
11737                                         case MONO_TYPE_I:
11738                                         case MONO_TYPE_U:
11739                                         case MONO_TYPE_PTR:
11740                                         case MONO_TYPE_FNPTR:
11741                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11742                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11743                                                 sp++;
11744                                                 break;
11745                                         case MONO_TYPE_STRING:
11746                                         case MONO_TYPE_OBJECT:
11747                                         case MONO_TYPE_CLASS:
11748                                         case MONO_TYPE_SZARRAY:
11749                                         case MONO_TYPE_ARRAY:
11750                                                 if (!mono_gc_is_moving ()) {
11751                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11752                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11753                                                         sp++;
11754                                                 } else {
11755                                                         is_const = FALSE;
11756                                                 }
11757                                                 break;
11758                                         case MONO_TYPE_I8:
11759                                         case MONO_TYPE_U8:
11760                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11761                                                 sp++;
11762                                                 break;
11763                                         case MONO_TYPE_R4:
11764                                         case MONO_TYPE_R8:
11765                                         case MONO_TYPE_VALUETYPE:
11766                                         default:
11767                                                 is_const = FALSE;
11768                                                 break;
11769                                         }
11770                                 }
11771
11772                                 if (!is_const) {
11773                                         MonoInst *load;
11774
11775                                         CHECK_STACK_OVF (1);
11776
11777                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11778                                         load->flags |= ins_flag;
11779                                         ins_flag = 0;
11780                                         *sp++ = load;
11781                                 }
11782                         }
11783
11784                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11785                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11786                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11787                         }
11788
11789                         ins_flag = 0;
11790                         ip += 5;
11791                         break;
11792                 }
11793                 case CEE_STOBJ:
11794                         CHECK_STACK (2);
11795                         sp -= 2;
11796                         CHECK_OPSIZE (5);
11797                         token = read32 (ip + 1);
11798                         klass = mini_get_class (method, token, generic_context);
11799                         CHECK_TYPELOAD (klass);
11800                         if (ins_flag & MONO_INST_VOLATILE) {
11801                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11802                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11803                         }
11804                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11805                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11806                         ins->flags |= ins_flag;
11807                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11808                                         generic_class_is_reference_type (cfg, klass)) {
11809                                 /* insert call to write barrier */
11810                                 emit_write_barrier (cfg, sp [0], sp [1]);
11811                         }
11812                         ins_flag = 0;
11813                         ip += 5;
11814                         inline_costs += 1;
11815                         break;
11816
11817                         /*
11818                          * Array opcodes
11819                          */
11820                 case CEE_NEWARR: {
11821                         MonoInst *len_ins;
11822                         const char *data_ptr;
11823                         int data_size = 0;
11824                         guint32 field_token;
11825
11826                         CHECK_STACK (1);
11827                         --sp;
11828
11829                         CHECK_OPSIZE (5);
11830                         token = read32 (ip + 1);
11831
11832                         klass = mini_get_class (method, token, generic_context);
11833                         CHECK_TYPELOAD (klass);
11834
11835                         context_used = mini_class_check_context_used (cfg, klass);
11836
11837                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11838                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11839                                 ins->sreg1 = sp [0]->dreg;
11840                                 ins->type = STACK_I4;
11841                                 ins->dreg = alloc_ireg (cfg);
11842                                 MONO_ADD_INS (cfg->cbb, ins);
11843                                 *sp = mono_decompose_opcode (cfg, ins);
11844                         }
11845
11846                         if (context_used) {
11847                                 MonoInst *args [3];
11848                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11849                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11850
11851                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11852
11853                                 /* vtable */
11854                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11855                                         array_class, MONO_RGCTX_INFO_VTABLE);
11856                                 /* array len */
11857                                 args [1] = sp [0];
11858
11859                                 if (managed_alloc)
11860                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11861                                 else
11862                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11863                         } else {
11864                                 if (cfg->opt & MONO_OPT_SHARED) {
11865                                         /* Decompose now to avoid problems with references to the domainvar */
11866                                         MonoInst *iargs [3];
11867
11868                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11869                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11870                                         iargs [2] = sp [0];
11871
11872                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
11873                                 } else {
11874                                         /* Decompose later since it is needed by abcrem */
11875                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11876                                         mono_class_vtable (cfg->domain, array_type);
11877                                         CHECK_TYPELOAD (array_type);
11878
11879                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11880                                         ins->dreg = alloc_ireg_ref (cfg);
11881                                         ins->sreg1 = sp [0]->dreg;
11882                                         ins->inst_newa_class = klass;
11883                                         ins->type = STACK_OBJ;
11884                                         ins->klass = array_type;
11885                                         MONO_ADD_INS (cfg->cbb, ins);
11886                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11887                                         cfg->cbb->has_array_access = TRUE;
11888
11889                                         /* Needed so mono_emit_load_get_addr () gets called */
11890                                         mono_get_got_var (cfg);
11891                                 }
11892                         }
11893
11894                         len_ins = sp [0];
11895                         ip += 5;
11896                         *sp++ = ins;
11897                         inline_costs += 1;
11898
11899                         /*
11900                          * we inline/optimize the initialization sequence if possible.
11901                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11902                          * for small sizes open code the memcpy
11903                          * ensure the rva field is big enough
11904                          */
11905                         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))) {
11906                                 MonoMethod *memcpy_method = get_memcpy_method ();
11907                                 MonoInst *iargs [3];
11908                                 int add_reg = alloc_ireg_mp (cfg);
11909
11910                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11911                                 if (cfg->compile_aot) {
11912                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11913                                 } else {
11914                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11915                                 }
11916                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11917                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11918                                 ip += 11;
11919                         }
11920
11921                         break;
11922                 }
11923                 case CEE_LDLEN:
11924                         CHECK_STACK (1);
11925                         --sp;
11926                         if (sp [0]->type != STACK_OBJ)
11927                                 UNVERIFIED;
11928
11929                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11930                         ins->dreg = alloc_preg (cfg);
11931                         ins->sreg1 = sp [0]->dreg;
11932                         ins->type = STACK_I4;
11933                         /* This flag will be inherited by the decomposition */
11934                         ins->flags |= MONO_INST_FAULT;
11935                         MONO_ADD_INS (cfg->cbb, ins);
11936                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11937                         cfg->cbb->has_array_access = TRUE;
11938                         ip ++;
11939                         *sp++ = ins;
11940                         break;
11941                 case CEE_LDELEMA:
11942                         CHECK_STACK (2);
11943                         sp -= 2;
11944                         CHECK_OPSIZE (5);
11945                         if (sp [0]->type != STACK_OBJ)
11946                                 UNVERIFIED;
11947
11948                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11949
11950                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11951                         CHECK_TYPELOAD (klass);
11952                         /* we need to make sure that this array is exactly the type it needs
11953                          * to be for correctness. the wrappers are lax with their usage
11954                          * so we need to ignore them here
11955                          */
11956                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11957                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11958                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11959                                 CHECK_TYPELOAD (array_class);
11960                         }
11961
11962                         readonly = FALSE;
11963                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11964                         *sp++ = ins;
11965                         ip += 5;
11966                         break;
11967                 case CEE_LDELEM:
11968                 case CEE_LDELEM_I1:
11969                 case CEE_LDELEM_U1:
11970                 case CEE_LDELEM_I2:
11971                 case CEE_LDELEM_U2:
11972                 case CEE_LDELEM_I4:
11973                 case CEE_LDELEM_U4:
11974                 case CEE_LDELEM_I8:
11975                 case CEE_LDELEM_I:
11976                 case CEE_LDELEM_R4:
11977                 case CEE_LDELEM_R8:
11978                 case CEE_LDELEM_REF: {
11979                         MonoInst *addr;
11980
11981                         CHECK_STACK (2);
11982                         sp -= 2;
11983
11984                         if (*ip == CEE_LDELEM) {
11985                                 CHECK_OPSIZE (5);
11986                                 token = read32 (ip + 1);
11987                                 klass = mini_get_class (method, token, generic_context);
11988                                 CHECK_TYPELOAD (klass);
11989                                 mono_class_init (klass);
11990                         }
11991                         else
11992                                 klass = array_access_to_klass (*ip);
11993
11994                         if (sp [0]->type != STACK_OBJ)
11995                                 UNVERIFIED;
11996
11997                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11998
11999                         if (mini_is_gsharedvt_variable_klass (klass)) {
12000                                 // FIXME-VT: OP_ICONST optimization
12001                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12002                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12003                                 ins->opcode = OP_LOADV_MEMBASE;
12004                         } else if (sp [1]->opcode == OP_ICONST) {
12005                                 int array_reg = sp [0]->dreg;
12006                                 int index_reg = sp [1]->dreg;
12007                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
12008
12009                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
12010                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12011
12012                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12013                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12014                         } else {
12015                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12016                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12017                         }
12018                         *sp++ = ins;
12019                         if (*ip == CEE_LDELEM)
12020                                 ip += 5;
12021                         else
12022                                 ++ip;
12023                         break;
12024                 }
12025                 case CEE_STELEM_I:
12026                 case CEE_STELEM_I1:
12027                 case CEE_STELEM_I2:
12028                 case CEE_STELEM_I4:
12029                 case CEE_STELEM_I8:
12030                 case CEE_STELEM_R4:
12031                 case CEE_STELEM_R8:
12032                 case CEE_STELEM_REF:
12033                 case CEE_STELEM: {
12034                         CHECK_STACK (3);
12035                         sp -= 3;
12036
12037                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12038
12039                         if (*ip == CEE_STELEM) {
12040                                 CHECK_OPSIZE (5);
12041                                 token = read32 (ip + 1);
12042                                 klass = mini_get_class (method, token, generic_context);
12043                                 CHECK_TYPELOAD (klass);
12044                                 mono_class_init (klass);
12045                         }
12046                         else
12047                                 klass = array_access_to_klass (*ip);
12048
12049                         if (sp [0]->type != STACK_OBJ)
12050                                 UNVERIFIED;
12051
12052                         emit_array_store (cfg, klass, sp, TRUE);
12053
12054                         if (*ip == CEE_STELEM)
12055                                 ip += 5;
12056                         else
12057                                 ++ip;
12058                         inline_costs += 1;
12059                         break;
12060                 }
12061                 case CEE_CKFINITE: {
12062                         CHECK_STACK (1);
12063                         --sp;
12064
12065                         if (cfg->llvm_only) {
12066                                 MonoInst *iargs [1];
12067
12068                                 iargs [0] = sp [0];
12069                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12070                         } else  {
12071                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12072                                 ins->sreg1 = sp [0]->dreg;
12073                                 ins->dreg = alloc_freg (cfg);
12074                                 ins->type = STACK_R8;
12075                                 MONO_ADD_INS (cfg->cbb, ins);
12076
12077                                 *sp++ = mono_decompose_opcode (cfg, ins);
12078                         }
12079
12080                         ++ip;
12081                         break;
12082                 }
12083                 case CEE_REFANYVAL: {
12084                         MonoInst *src_var, *src;
12085
12086                         int klass_reg = alloc_preg (cfg);
12087                         int dreg = alloc_preg (cfg);
12088
12089                         GSHAREDVT_FAILURE (*ip);
12090
12091                         CHECK_STACK (1);
12092                         MONO_INST_NEW (cfg, ins, *ip);
12093                         --sp;
12094                         CHECK_OPSIZE (5);
12095                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12096                         CHECK_TYPELOAD (klass);
12097
12098                         context_used = mini_class_check_context_used (cfg, klass);
12099
12100                         // FIXME:
12101                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12102                         if (!src_var)
12103                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12104                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12105                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12106
12107                         if (context_used) {
12108                                 MonoInst *klass_ins;
12109
12110                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12111                                                 klass, MONO_RGCTX_INFO_KLASS);
12112
12113                                 // FIXME:
12114                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12115                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12116                         } else {
12117                                 mini_emit_class_check (cfg, klass_reg, klass);
12118                         }
12119                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12120                         ins->type = STACK_MP;
12121                         ins->klass = klass;
12122                         *sp++ = ins;
12123                         ip += 5;
12124                         break;
12125                 }
12126                 case CEE_MKREFANY: {
12127                         MonoInst *loc, *addr;
12128
12129                         GSHAREDVT_FAILURE (*ip);
12130
12131                         CHECK_STACK (1);
12132                         MONO_INST_NEW (cfg, ins, *ip);
12133                         --sp;
12134                         CHECK_OPSIZE (5);
12135                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12136                         CHECK_TYPELOAD (klass);
12137
12138                         context_used = mini_class_check_context_used (cfg, klass);
12139
12140                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12141                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12142
12143                         if (context_used) {
12144                                 MonoInst *const_ins;
12145                                 int type_reg = alloc_preg (cfg);
12146
12147                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12148                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12149                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12150                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12151                         } else if (cfg->compile_aot) {
12152                                 int const_reg = alloc_preg (cfg);
12153                                 int type_reg = alloc_preg (cfg);
12154
12155                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12156                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12157                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12158                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12159                         } else {
12160                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12161                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12162                         }
12163                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12164
12165                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12166                         ins->type = STACK_VTYPE;
12167                         ins->klass = mono_defaults.typed_reference_class;
12168                         *sp++ = ins;
12169                         ip += 5;
12170                         break;
12171                 }
12172                 case CEE_LDTOKEN: {
12173                         gpointer handle;
12174                         MonoClass *handle_class;
12175
12176                         CHECK_STACK_OVF (1);
12177
12178                         CHECK_OPSIZE (5);
12179                         n = read32 (ip + 1);
12180
12181                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12182                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12183                                 handle = mono_method_get_wrapper_data (method, n);
12184                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12185                                 if (handle_class == mono_defaults.typehandle_class)
12186                                         handle = &((MonoClass*)handle)->byval_arg;
12187                         }
12188                         else {
12189                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12190                                 CHECK_CFG_ERROR;
12191                         }
12192                         if (!handle)
12193                                 LOAD_ERROR;
12194                         mono_class_init (handle_class);
12195                         if (cfg->gshared) {
12196                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12197                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12198                                         /* This case handles ldtoken
12199                                            of an open type, like for
12200                                            typeof(Gen<>). */
12201                                         context_used = 0;
12202                                 } else if (handle_class == mono_defaults.typehandle_class) {
12203                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12204                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12205                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12206                                 else if (handle_class == mono_defaults.methodhandle_class)
12207                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12208                                 else
12209                                         g_assert_not_reached ();
12210                         }
12211
12212                         if ((cfg->opt & MONO_OPT_SHARED) &&
12213                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12214                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12215                                 MonoInst *addr, *vtvar, *iargs [3];
12216                                 int method_context_used;
12217
12218                                 method_context_used = mini_method_check_context_used (cfg, method);
12219
12220                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12221
12222                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12223                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12224                                 if (method_context_used) {
12225                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12226                                                 method, MONO_RGCTX_INFO_METHOD);
12227                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12228                                 } else {
12229                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12230                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12231                                 }
12232                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12233
12234                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12235
12236                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12237                         } else {
12238                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12239                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12240                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12241                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12242                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12243                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12244
12245                                         mono_class_init (tclass);
12246                                         if (context_used) {
12247                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12248                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12249                                         } else if (cfg->compile_aot) {
12250                                                 if (method->wrapper_type) {
12251                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12252                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12253                                                                 /* Special case for static synchronized wrappers */
12254                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12255                                                         } else {
12256                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12257                                                                 /* FIXME: n is not a normal token */
12258                                                                 DISABLE_AOT (cfg);
12259                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12260                                                         }
12261                                                 } else {
12262                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12263                                                 }
12264                                         } else {
12265                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12266                                                 CHECK_CFG_ERROR;
12267                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12268                                         }
12269                                         ins->type = STACK_OBJ;
12270                                         ins->klass = cmethod->klass;
12271                                         ip += 5;
12272                                 } else {
12273                                         MonoInst *addr, *vtvar;
12274
12275                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12276
12277                                         if (context_used) {
12278                                                 if (handle_class == mono_defaults.typehandle_class) {
12279                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12280                                                                         mono_class_from_mono_type ((MonoType *)handle),
12281                                                                         MONO_RGCTX_INFO_TYPE);
12282                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12283                                                         ins = emit_get_rgctx_method (cfg, context_used,
12284                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12285                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12286                                                         ins = emit_get_rgctx_field (cfg, context_used,
12287                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12288                                                 } else {
12289                                                         g_assert_not_reached ();
12290                                                 }
12291                                         } else if (cfg->compile_aot) {
12292                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12293                                         } else {
12294                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12295                                         }
12296                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12297                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12298                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12299                                 }
12300                         }
12301
12302                         *sp++ = ins;
12303                         ip += 5;
12304                         break;
12305                 }
12306                 case CEE_THROW:
12307                         CHECK_STACK (1);
12308                         MONO_INST_NEW (cfg, ins, OP_THROW);
12309                         --sp;
12310                         ins->sreg1 = sp [0]->dreg;
12311                         ip++;
12312                         cfg->cbb->out_of_line = TRUE;
12313                         MONO_ADD_INS (cfg->cbb, ins);
12314                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12315                         MONO_ADD_INS (cfg->cbb, ins);
12316                         sp = stack_start;
12317
12318                         link_bblock (cfg, cfg->cbb, end_bblock);
12319                         start_new_bblock = 1;
12320                         /* This can complicate code generation for llvm since the return value might not be defined */
12321                         if (COMPILE_LLVM (cfg))
12322                                 INLINE_FAILURE ("throw");
12323                         break;
12324                 case CEE_ENDFINALLY:
12325                         /* mono_save_seq_point_info () depends on this */
12326                         if (sp != stack_start)
12327                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12328                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12329                         MONO_ADD_INS (cfg->cbb, ins);
12330                         ip++;
12331                         start_new_bblock = 1;
12332
12333                         /*
12334                          * Control will leave the method so empty the stack, otherwise
12335                          * the next basic block will start with a nonempty stack.
12336                          */
12337                         while (sp != stack_start) {
12338                                 sp--;
12339                         }
12340                         break;
12341                 case CEE_LEAVE:
12342                 case CEE_LEAVE_S: {
12343                         GList *handlers;
12344
12345                         if (*ip == CEE_LEAVE) {
12346                                 CHECK_OPSIZE (5);
12347                                 target = ip + 5 + (gint32)read32(ip + 1);
12348                         } else {
12349                                 CHECK_OPSIZE (2);
12350                                 target = ip + 2 + (signed char)(ip [1]);
12351                         }
12352
12353                         /* empty the stack */
12354                         while (sp != stack_start) {
12355                                 sp--;
12356                         }
12357
12358                         /*
12359                          * If this leave statement is in a catch block, check for a
12360                          * pending exception, and rethrow it if necessary.
12361                          * We avoid doing this in runtime invoke wrappers, since those are called
12362                          * by native code which excepts the wrapper to catch all exceptions.
12363                          */
12364                         for (i = 0; i < header->num_clauses; ++i) {
12365                                 MonoExceptionClause *clause = &header->clauses [i];
12366
12367                                 /*
12368                                  * Use <= in the final comparison to handle clauses with multiple
12369                                  * leave statements, like in bug #78024.
12370                                  * The ordering of the exception clauses guarantees that we find the
12371                                  * innermost clause.
12372                                  */
12373                                 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) {
12374                                         MonoInst *exc_ins;
12375                                         MonoBasicBlock *dont_throw;
12376
12377                                         /*
12378                                           MonoInst *load;
12379
12380                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12381                                         */
12382
12383                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12384
12385                                         NEW_BBLOCK (cfg, dont_throw);
12386
12387                                         /*
12388                                          * Currently, we always rethrow the abort exception, despite the
12389                                          * fact that this is not correct. See thread6.cs for an example.
12390                                          * But propagating the abort exception is more important than
12391                                          * getting the sematics right.
12392                                          */
12393                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12394                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12395                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12396
12397                                         MONO_START_BB (cfg, dont_throw);
12398                                 }
12399                         }
12400
12401 #ifdef ENABLE_LLVM
12402                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12403 #endif
12404
12405                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12406                                 GList *tmp;
12407                                 MonoExceptionClause *clause;
12408
12409                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12410                                         clause = (MonoExceptionClause *)tmp->data;
12411                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12412                                         g_assert (tblock);
12413                                         link_bblock (cfg, cfg->cbb, tblock);
12414                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12415                                         ins->inst_target_bb = tblock;
12416                                         ins->inst_eh_block = clause;
12417                                         MONO_ADD_INS (cfg->cbb, ins);
12418                                         cfg->cbb->has_call_handler = 1;
12419                                         if (COMPILE_LLVM (cfg)) {
12420                                                 MonoBasicBlock *target_bb;
12421
12422                                                 /*
12423                                                  * Link the finally bblock with the target, since it will
12424                                                  * conceptually branch there.
12425                                                  */
12426                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12427                                                 GET_BBLOCK (cfg, target_bb, target);
12428                                                 link_bblock (cfg, tblock, target_bb);
12429                                         }
12430                                 }
12431                                 g_list_free (handlers);
12432                         }
12433
12434                         MONO_INST_NEW (cfg, ins, OP_BR);
12435                         MONO_ADD_INS (cfg->cbb, ins);
12436                         GET_BBLOCK (cfg, tblock, target);
12437                         link_bblock (cfg, cfg->cbb, tblock);
12438                         ins->inst_target_bb = tblock;
12439
12440                         start_new_bblock = 1;
12441
12442                         if (*ip == CEE_LEAVE)
12443                                 ip += 5;
12444                         else
12445                                 ip += 2;
12446
12447                         break;
12448                 }
12449
12450                         /*
12451                          * Mono specific opcodes
12452                          */
12453                 case MONO_CUSTOM_PREFIX: {
12454
12455                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12456
12457                         CHECK_OPSIZE (2);
12458                         switch (ip [1]) {
12459                         case CEE_MONO_ICALL: {
12460                                 gpointer func;
12461                                 MonoJitICallInfo *info;
12462
12463                                 token = read32 (ip + 2);
12464                                 func = mono_method_get_wrapper_data (method, token);
12465                                 info = mono_find_jit_icall_by_addr (func);
12466                                 if (!info)
12467                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12468                                 g_assert (info);
12469
12470                                 CHECK_STACK (info->sig->param_count);
12471                                 sp -= info->sig->param_count;
12472
12473                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12474                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12475                                         *sp++ = ins;
12476
12477                                 ip += 6;
12478                                 inline_costs += 10 * num_calls++;
12479
12480                                 break;
12481                         }
12482                         case CEE_MONO_LDPTR_CARD_TABLE:
12483                         case CEE_MONO_LDPTR_NURSERY_START:
12484                         case CEE_MONO_LDPTR_NURSERY_BITS:
12485                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12486                                 CHECK_STACK_OVF (1);
12487
12488                                 switch (ip [1]) {
12489                                         case CEE_MONO_LDPTR_CARD_TABLE:
12490                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12491                                                 break;
12492                                         case CEE_MONO_LDPTR_NURSERY_START:
12493                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12494                                                 break;
12495                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12496                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12497                                                 break;
12498                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12499                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12500                                                 break;
12501                                 }
12502
12503                                 *sp++ = ins;
12504                                 ip += 2;
12505                                 inline_costs += 10 * num_calls++;
12506                                 break;
12507                         }
12508                         case CEE_MONO_LDPTR: {
12509                                 gpointer ptr;
12510
12511                                 CHECK_STACK_OVF (1);
12512                                 CHECK_OPSIZE (6);
12513                                 token = read32 (ip + 2);
12514
12515                                 ptr = mono_method_get_wrapper_data (method, token);
12516                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12517                                 *sp++ = ins;
12518                                 ip += 6;
12519                                 inline_costs += 10 * num_calls++;
12520                                 /* Can't embed random pointers into AOT code */
12521                                 DISABLE_AOT (cfg);
12522                                 break;
12523                         }
12524                         case CEE_MONO_JIT_ICALL_ADDR: {
12525                                 MonoJitICallInfo *callinfo;
12526                                 gpointer ptr;
12527
12528                                 CHECK_STACK_OVF (1);
12529                                 CHECK_OPSIZE (6);
12530                                 token = read32 (ip + 2);
12531
12532                                 ptr = mono_method_get_wrapper_data (method, token);
12533                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12534                                 g_assert (callinfo);
12535                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12536                                 *sp++ = ins;
12537                                 ip += 6;
12538                                 inline_costs += 10 * num_calls++;
12539                                 break;
12540                         }
12541                         case CEE_MONO_ICALL_ADDR: {
12542                                 MonoMethod *cmethod;
12543                                 gpointer ptr;
12544
12545                                 CHECK_STACK_OVF (1);
12546                                 CHECK_OPSIZE (6);
12547                                 token = read32 (ip + 2);
12548
12549                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12550
12551                                 if (cfg->compile_aot) {
12552                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12553                                 } else {
12554                                         ptr = mono_lookup_internal_call (cmethod);
12555                                         g_assert (ptr);
12556                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12557                                 }
12558                                 *sp++ = ins;
12559                                 ip += 6;
12560                                 break;
12561                         }
12562                         case CEE_MONO_VTADDR: {
12563                                 MonoInst *src_var, *src;
12564
12565                                 CHECK_STACK (1);
12566                                 --sp;
12567
12568                                 // FIXME:
12569                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12570                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12571                                 *sp++ = src;
12572                                 ip += 2;
12573                                 break;
12574                         }
12575                         case CEE_MONO_NEWOBJ: {
12576                                 MonoInst *iargs [2];
12577
12578                                 CHECK_STACK_OVF (1);
12579                                 CHECK_OPSIZE (6);
12580                                 token = read32 (ip + 2);
12581                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12582                                 mono_class_init (klass);
12583                                 NEW_DOMAINCONST (cfg, iargs [0]);
12584                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12585                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12586                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12587                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12588                                 ip += 6;
12589                                 inline_costs += 10 * num_calls++;
12590                                 break;
12591                         }
12592                         case CEE_MONO_OBJADDR:
12593                                 CHECK_STACK (1);
12594                                 --sp;
12595                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12596                                 ins->dreg = alloc_ireg_mp (cfg);
12597                                 ins->sreg1 = sp [0]->dreg;
12598                                 ins->type = STACK_MP;
12599                                 MONO_ADD_INS (cfg->cbb, ins);
12600                                 *sp++ = ins;
12601                                 ip += 2;
12602                                 break;
12603                         case CEE_MONO_LDNATIVEOBJ:
12604                                 /*
12605                                  * Similar to LDOBJ, but instead load the unmanaged
12606                                  * representation of the vtype to the stack.
12607                                  */
12608                                 CHECK_STACK (1);
12609                                 CHECK_OPSIZE (6);
12610                                 --sp;
12611                                 token = read32 (ip + 2);
12612                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12613                                 g_assert (klass->valuetype);
12614                                 mono_class_init (klass);
12615
12616                                 {
12617                                         MonoInst *src, *dest, *temp;
12618
12619                                         src = sp [0];
12620                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12621                                         temp->backend.is_pinvoke = 1;
12622                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12623                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12624
12625                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12626                                         dest->type = STACK_VTYPE;
12627                                         dest->klass = klass;
12628
12629                                         *sp ++ = dest;
12630                                         ip += 6;
12631                                 }
12632                                 break;
12633                         case CEE_MONO_RETOBJ: {
12634                                 /*
12635                                  * Same as RET, but return the native representation of a vtype
12636                                  * to the caller.
12637                                  */
12638                                 g_assert (cfg->ret);
12639                                 g_assert (mono_method_signature (method)->pinvoke);
12640                                 CHECK_STACK (1);
12641                                 --sp;
12642
12643                                 CHECK_OPSIZE (6);
12644                                 token = read32 (ip + 2);
12645                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12646
12647                                 if (!cfg->vret_addr) {
12648                                         g_assert (cfg->ret_var_is_local);
12649
12650                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12651                                 } else {
12652                                         EMIT_NEW_RETLOADA (cfg, ins);
12653                                 }
12654                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12655
12656                                 if (sp != stack_start)
12657                                         UNVERIFIED;
12658
12659                                 MONO_INST_NEW (cfg, ins, OP_BR);
12660                                 ins->inst_target_bb = end_bblock;
12661                                 MONO_ADD_INS (cfg->cbb, ins);
12662                                 link_bblock (cfg, cfg->cbb, end_bblock);
12663                                 start_new_bblock = 1;
12664                                 ip += 6;
12665                                 break;
12666                         }
12667                         case CEE_MONO_CISINST:
12668                         case CEE_MONO_CCASTCLASS: {
12669                                 int token;
12670                                 CHECK_STACK (1);
12671                                 --sp;
12672                                 CHECK_OPSIZE (6);
12673                                 token = read32 (ip + 2);
12674                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12675                                 if (ip [1] == CEE_MONO_CISINST)
12676                                         ins = handle_cisinst (cfg, klass, sp [0]);
12677                                 else
12678                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12679                                 *sp++ = ins;
12680                                 ip += 6;
12681                                 break;
12682                         }
12683                         case CEE_MONO_SAVE_LMF:
12684                         case CEE_MONO_RESTORE_LMF:
12685                                 ip += 2;
12686                                 break;
12687                         case CEE_MONO_CLASSCONST:
12688                                 CHECK_STACK_OVF (1);
12689                                 CHECK_OPSIZE (6);
12690                                 token = read32 (ip + 2);
12691                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12692                                 *sp++ = ins;
12693                                 ip += 6;
12694                                 inline_costs += 10 * num_calls++;
12695                                 break;
12696                         case CEE_MONO_NOT_TAKEN:
12697                                 cfg->cbb->out_of_line = TRUE;
12698                                 ip += 2;
12699                                 break;
12700                         case CEE_MONO_TLS: {
12701                                 MonoTlsKey key;
12702
12703                                 CHECK_STACK_OVF (1);
12704                                 CHECK_OPSIZE (6);
12705                                 key = (MonoTlsKey)read32 (ip + 2);
12706                                 g_assert (key < TLS_KEY_NUM);
12707
12708                                 ins = mono_create_tls_get (cfg, key);
12709                                 if (!ins) {
12710                                         if (cfg->compile_aot) {
12711                                                 DISABLE_AOT (cfg);
12712                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12713                                                 ins->dreg = alloc_preg (cfg);
12714                                                 ins->type = STACK_PTR;
12715                                         } else {
12716                                                 g_assert_not_reached ();
12717                                         }
12718                                 }
12719                                 ins->type = STACK_PTR;
12720                                 MONO_ADD_INS (cfg->cbb, ins);
12721                                 *sp++ = ins;
12722                                 ip += 6;
12723                                 break;
12724                         }
12725                         case CEE_MONO_DYN_CALL: {
12726                                 MonoCallInst *call;
12727
12728                                 /* It would be easier to call a trampoline, but that would put an
12729                                  * extra frame on the stack, confusing exception handling. So
12730                                  * implement it inline using an opcode for now.
12731                                  */
12732
12733                                 if (!cfg->dyn_call_var) {
12734                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12735                                         /* prevent it from being register allocated */
12736                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12737                                 }
12738
12739                                 /* Has to use a call inst since it local regalloc expects it */
12740                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12741                                 ins = (MonoInst*)call;
12742                                 sp -= 2;
12743                                 ins->sreg1 = sp [0]->dreg;
12744                                 ins->sreg2 = sp [1]->dreg;
12745                                 MONO_ADD_INS (cfg->cbb, ins);
12746
12747                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12748
12749                                 ip += 2;
12750                                 inline_costs += 10 * num_calls++;
12751
12752                                 break;
12753                         }
12754                         case CEE_MONO_MEMORY_BARRIER: {
12755                                 CHECK_OPSIZE (6);
12756                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12757                                 ip += 6;
12758                                 break;
12759                         }
12760                         case CEE_MONO_JIT_ATTACH: {
12761                                 MonoInst *args [16], *domain_ins;
12762                                 MonoInst *ad_ins, *jit_tls_ins;
12763                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12764
12765                                 cfg->attach_cookie = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12766                                 cfg->attach_dummy = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12767
12768                                 if (mono_threads_is_coop_enabled ()) {
12769                                         /* AOT code is only used in the root domain */
12770                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12771                                         EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12772                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12773                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12774                                 } else {
12775                                         EMIT_NEW_PCONST (cfg, ins, NULL);
12776                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12777
12778                                         ad_ins = mono_get_domain_intrinsic (cfg);
12779                                         jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12780
12781                                         if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12782                                                 NEW_BBLOCK (cfg, next_bb);
12783                                                 NEW_BBLOCK (cfg, call_bb);
12784
12785                                                 if (cfg->compile_aot) {
12786                                                         /* AOT code is only used in the root domain */
12787                                                         EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12788                                                 } else {
12789                                                         EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12790                                                 }
12791                                                 MONO_ADD_INS (cfg->cbb, ad_ins);
12792                                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12793                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12794
12795                                                 MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12796                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12797                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12798
12799                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12800                                                 MONO_START_BB (cfg, call_bb);
12801                                         }
12802
12803                                         /* AOT code is only used in the root domain */
12804                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12805                                         EMIT_NEW_PCONST (cfg, args [1], NULL);
12806                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12807                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12808
12809                                         if (next_bb)
12810                                                 MONO_START_BB (cfg, next_bb);
12811                                 }
12812
12813                                 ip += 2;
12814                                 break;
12815                         }
12816                         case CEE_MONO_JIT_DETACH: {
12817                                 MonoInst *args [16];
12818
12819                                 /* Restore the original domain */
12820                                 dreg = alloc_ireg (cfg);
12821                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->attach_cookie->dreg);
12822                                 EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12823                                 mono_emit_jit_icall (cfg, mono_jit_thread_detach, args);
12824                                 ip += 2;
12825                                 break;
12826                         }
12827                         case CEE_MONO_CALLI_EXTRA_ARG: {
12828                                 MonoInst *addr;
12829                                 MonoMethodSignature *fsig;
12830                                 MonoInst *arg;
12831
12832                                 /*
12833                                  * This is the same as CEE_CALLI, but passes an additional argument
12834                                  * to the called method in llvmonly mode.
12835                                  * This is only used by delegate invoke wrappers to call the
12836                                  * actual delegate method.
12837                                  */
12838                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12839
12840                                 CHECK_OPSIZE (6);
12841                                 token = read32 (ip + 2);
12842
12843                                 ins = NULL;
12844
12845                                 cmethod = NULL;
12846                                 CHECK_STACK (1);
12847                                 --sp;
12848                                 addr = *sp;
12849                                 fsig = mini_get_signature (method, token, generic_context);
12850
12851                                 if (cfg->llvm_only)
12852                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12853
12854                                 n = fsig->param_count + fsig->hasthis + 1;
12855
12856                                 CHECK_STACK (n);
12857
12858                                 sp -= n;
12859                                 arg = sp [n - 1];
12860
12861                                 if (cfg->llvm_only) {
12862                                         /*
12863                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12864                                          * cconv. This is set by mono_init_delegate ().
12865                                          */
12866                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12867                                                 MonoInst *callee = addr;
12868                                                 MonoInst *call, *localloc_ins;
12869                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12870                                                 int low_bit_reg = alloc_preg (cfg);
12871
12872                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12873                                                 NEW_BBLOCK (cfg, end_bb);
12874
12875                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12876                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12877                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12878
12879                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12880                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12881                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12882                                                 /*
12883                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12884                                                  */
12885                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12886                                                 ins->dreg = alloc_preg (cfg);
12887                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12888                                                 MONO_ADD_INS (cfg->cbb, ins);
12889                                                 localloc_ins = ins;
12890                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12891                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12892                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12893
12894                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12895                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12896
12897                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12898                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12899                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12900                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12901                                                 ins->dreg = call->dreg;
12902
12903                                                 MONO_START_BB (cfg, end_bb);
12904                                         } else {
12905                                                 /* Caller uses a normal calling conv */
12906
12907                                                 MonoInst *callee = addr;
12908                                                 MonoInst *call, *localloc_ins;
12909                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12910                                                 int low_bit_reg = alloc_preg (cfg);
12911
12912                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12913                                                 NEW_BBLOCK (cfg, end_bb);
12914
12915                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12916                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12917                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12918
12919                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12920                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12921                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12922                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12923                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12924                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12925                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12926                                                 MONO_ADD_INS (cfg->cbb, addr);
12927                                                 /*
12928                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12929                                                  */
12930                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12931                                                 ins->dreg = alloc_preg (cfg);
12932                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12933                                                 MONO_ADD_INS (cfg->cbb, ins);
12934                                                 localloc_ins = ins;
12935                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12936                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12937                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12938
12939                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12940                                                 ins->dreg = call->dreg;
12941                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12942
12943                                                 MONO_START_BB (cfg, end_bb);
12944                                         }
12945                                 } else {
12946                                         /* Same as CEE_CALLI */
12947                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12948                                                 /*
12949                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12950                                                  */
12951                                                 MonoInst *callee = addr;
12952
12953                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12954                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12955                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12956                                         } else {
12957                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12958                                         }
12959                                 }
12960
12961                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12962                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12963
12964                                 CHECK_CFG_EXCEPTION;
12965
12966                                 ip += 6;
12967                                 ins_flag = 0;
12968                                 constrained_class = NULL;
12969                                 break;
12970                         }
12971                         default:
12972                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12973                                 break;
12974                         }
12975                         break;
12976                 }
12977
12978                 case CEE_PREFIX1: {
12979                         CHECK_OPSIZE (2);
12980                         switch (ip [1]) {
12981                         case CEE_ARGLIST: {
12982                                 /* somewhat similar to LDTOKEN */
12983                                 MonoInst *addr, *vtvar;
12984                                 CHECK_STACK_OVF (1);
12985                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12986
12987                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12988                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12989
12990                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12991                                 ins->type = STACK_VTYPE;
12992                                 ins->klass = mono_defaults.argumenthandle_class;
12993                                 *sp++ = ins;
12994                                 ip += 2;
12995                                 break;
12996                         }
12997                         case CEE_CEQ:
12998                         case CEE_CGT:
12999                         case CEE_CGT_UN:
13000                         case CEE_CLT:
13001                         case CEE_CLT_UN: {
13002                                 MonoInst *cmp, *arg1, *arg2;
13003
13004                                 CHECK_STACK (2);
13005                                 sp -= 2;
13006                                 arg1 = sp [0];
13007                                 arg2 = sp [1];
13008
13009                                 /*
13010                                  * The following transforms:
13011                                  *    CEE_CEQ    into OP_CEQ
13012                                  *    CEE_CGT    into OP_CGT
13013                                  *    CEE_CGT_UN into OP_CGT_UN
13014                                  *    CEE_CLT    into OP_CLT
13015                                  *    CEE_CLT_UN into OP_CLT_UN
13016                                  */
13017                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13018
13019                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13020                                 cmp->sreg1 = arg1->dreg;
13021                                 cmp->sreg2 = arg2->dreg;
13022                                 type_from_op (cfg, cmp, arg1, arg2);
13023                                 CHECK_TYPE (cmp);
13024                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13025                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13026                                         cmp->opcode = OP_LCOMPARE;
13027                                 else if (arg1->type == STACK_R4)
13028                                         cmp->opcode = OP_RCOMPARE;
13029                                 else if (arg1->type == STACK_R8)
13030                                         cmp->opcode = OP_FCOMPARE;
13031                                 else
13032                                         cmp->opcode = OP_ICOMPARE;
13033                                 MONO_ADD_INS (cfg->cbb, cmp);
13034                                 ins->type = STACK_I4;
13035                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13036                                 type_from_op (cfg, ins, arg1, arg2);
13037
13038                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13039                                         /*
13040                                          * The backends expect the fceq opcodes to do the
13041                                          * comparison too.
13042                                          */
13043                                         ins->sreg1 = cmp->sreg1;
13044                                         ins->sreg2 = cmp->sreg2;
13045                                         NULLIFY_INS (cmp);
13046                                 }
13047                                 MONO_ADD_INS (cfg->cbb, ins);
13048                                 *sp++ = ins;
13049                                 ip += 2;
13050                                 break;
13051                         }
13052                         case CEE_LDFTN: {
13053                                 MonoInst *argconst;
13054                                 MonoMethod *cil_method;
13055
13056                                 CHECK_STACK_OVF (1);
13057                                 CHECK_OPSIZE (6);
13058                                 n = read32 (ip + 2);
13059                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13060                                 CHECK_CFG_ERROR;
13061
13062                                 mono_class_init (cmethod->klass);
13063
13064                                 mono_save_token_info (cfg, image, n, cmethod);
13065
13066                                 context_used = mini_method_check_context_used (cfg, cmethod);
13067
13068                                 cil_method = cmethod;
13069                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13070                                         METHOD_ACCESS_FAILURE (method, cil_method);
13071
13072                                 if (mono_security_core_clr_enabled ())
13073                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13074
13075                                 /*
13076                                  * Optimize the common case of ldftn+delegate creation
13077                                  */
13078                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13079                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13080                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13081                                                 MonoInst *target_ins, *handle_ins;
13082                                                 MonoMethod *invoke;
13083                                                 int invoke_context_used;
13084
13085                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13086                                                 if (!invoke || !mono_method_signature (invoke))
13087                                                         LOAD_ERROR;
13088
13089                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13090
13091                                                 target_ins = sp [-1];
13092
13093                                                 if (mono_security_core_clr_enabled ())
13094                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13095
13096                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13097                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13098                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13099                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13100                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13101                                                         }
13102                                                 }
13103
13104                                                 /* FIXME: SGEN support */
13105                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13106                                                         ip += 6;
13107                                                         if (cfg->verbose_level > 3)
13108                                                                 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));
13109                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13110                                                                 sp --;
13111                                                                 *sp = handle_ins;
13112                                                                 CHECK_CFG_EXCEPTION;
13113                                                                 ip += 5;
13114                                                                 sp ++;
13115                                                                 break;
13116                                                         }
13117                                                         ip -= 6;
13118                                                 }
13119                                         }
13120                                 }
13121
13122                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13123                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13124                                 *sp++ = ins;
13125
13126                                 ip += 6;
13127                                 inline_costs += 10 * num_calls++;
13128                                 break;
13129                         }
13130                         case CEE_LDVIRTFTN: {
13131                                 MonoInst *args [2];
13132
13133                                 CHECK_STACK (1);
13134                                 CHECK_OPSIZE (6);
13135                                 n = read32 (ip + 2);
13136                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13137                                 CHECK_CFG_ERROR;
13138
13139                                 mono_class_init (cmethod->klass);
13140
13141                                 context_used = mini_method_check_context_used (cfg, cmethod);
13142
13143                                 if (mono_security_core_clr_enabled ())
13144                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13145
13146                                 /*
13147                                  * Optimize the common case of ldvirtftn+delegate creation
13148                                  */
13149                                 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)) {
13150                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13151                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13152                                                 MonoInst *target_ins, *handle_ins;
13153                                                 MonoMethod *invoke;
13154                                                 int invoke_context_used;
13155                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13156
13157                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13158                                                 if (!invoke || !mono_method_signature (invoke))
13159                                                         LOAD_ERROR;
13160
13161                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13162
13163                                                 target_ins = sp [-1];
13164
13165                                                 if (mono_security_core_clr_enabled ())
13166                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13167
13168                                                 /* FIXME: SGEN support */
13169                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13170                                                         ip += 6;
13171                                                         if (cfg->verbose_level > 3)
13172                                                                 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));
13173                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13174                                                                 sp -= 2;
13175                                                                 *sp = handle_ins;
13176                                                                 CHECK_CFG_EXCEPTION;
13177                                                                 ip += 5;
13178                                                                 sp ++;
13179                                                                 break;
13180                                                         }
13181                                                         ip -= 6;
13182                                                 }
13183                                         }
13184                                 }
13185
13186                                 --sp;
13187                                 args [0] = *sp;
13188
13189                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13190                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13191
13192                                 if (context_used)
13193                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13194                                 else
13195                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13196
13197                                 ip += 6;
13198                                 inline_costs += 10 * num_calls++;
13199                                 break;
13200                         }
13201                         case CEE_LDARG:
13202                                 CHECK_STACK_OVF (1);
13203                                 CHECK_OPSIZE (4);
13204                                 n = read16 (ip + 2);
13205                                 CHECK_ARG (n);
13206                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13207                                 *sp++ = ins;
13208                                 ip += 4;
13209                                 break;
13210                         case CEE_LDARGA:
13211                                 CHECK_STACK_OVF (1);
13212                                 CHECK_OPSIZE (4);
13213                                 n = read16 (ip + 2);
13214                                 CHECK_ARG (n);
13215                                 NEW_ARGLOADA (cfg, ins, n);
13216                                 MONO_ADD_INS (cfg->cbb, ins);
13217                                 *sp++ = ins;
13218                                 ip += 4;
13219                                 break;
13220                         case CEE_STARG:
13221                                 CHECK_STACK (1);
13222                                 --sp;
13223                                 CHECK_OPSIZE (4);
13224                                 n = read16 (ip + 2);
13225                                 CHECK_ARG (n);
13226                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13227                                         UNVERIFIED;
13228                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13229                                 ip += 4;
13230                                 break;
13231                         case CEE_LDLOC:
13232                                 CHECK_STACK_OVF (1);
13233                                 CHECK_OPSIZE (4);
13234                                 n = read16 (ip + 2);
13235                                 CHECK_LOCAL (n);
13236                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13237                                 *sp++ = ins;
13238                                 ip += 4;
13239                                 break;
13240                         case CEE_LDLOCA: {
13241                                 unsigned char *tmp_ip;
13242                                 CHECK_STACK_OVF (1);
13243                                 CHECK_OPSIZE (4);
13244                                 n = read16 (ip + 2);
13245                                 CHECK_LOCAL (n);
13246
13247                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13248                                         ip = tmp_ip;
13249                                         inline_costs += 1;
13250                                         break;
13251                                 }
13252
13253                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13254                                 *sp++ = ins;
13255                                 ip += 4;
13256                                 break;
13257                         }
13258                         case CEE_STLOC:
13259                                 CHECK_STACK (1);
13260                                 --sp;
13261                                 CHECK_OPSIZE (4);
13262                                 n = read16 (ip + 2);
13263                                 CHECK_LOCAL (n);
13264                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13265                                         UNVERIFIED;
13266                                 emit_stloc_ir (cfg, sp, header, n);
13267                                 ip += 4;
13268                                 inline_costs += 1;
13269                                 break;
13270                         case CEE_LOCALLOC:
13271                                 CHECK_STACK (1);
13272                                 --sp;
13273                                 if (sp != stack_start)
13274                                         UNVERIFIED;
13275                                 if (cfg->method != method)
13276                                         /*
13277                                          * Inlining this into a loop in a parent could lead to
13278                                          * stack overflows which is different behavior than the
13279                                          * non-inlined case, thus disable inlining in this case.
13280                                          */
13281                                         INLINE_FAILURE("localloc");
13282
13283                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13284                                 ins->dreg = alloc_preg (cfg);
13285                                 ins->sreg1 = sp [0]->dreg;
13286                                 ins->type = STACK_PTR;
13287                                 MONO_ADD_INS (cfg->cbb, ins);
13288
13289                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13290                                 if (init_locals)
13291                                         ins->flags |= MONO_INST_INIT;
13292
13293                                 *sp++ = ins;
13294                                 ip += 2;
13295                                 break;
13296                         case CEE_ENDFILTER: {
13297                                 MonoExceptionClause *clause, *nearest;
13298                                 int cc;
13299
13300                                 CHECK_STACK (1);
13301                                 --sp;
13302                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13303                                         UNVERIFIED;
13304                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13305                                 ins->sreg1 = (*sp)->dreg;
13306                                 MONO_ADD_INS (cfg->cbb, ins);
13307                                 start_new_bblock = 1;
13308                                 ip += 2;
13309
13310                                 nearest = NULL;
13311                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13312                                         clause = &header->clauses [cc];
13313                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13314                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13315                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13316                                                 nearest = clause;
13317                                 }
13318                                 g_assert (nearest);
13319                                 if ((ip - header->code) != nearest->handler_offset)
13320                                         UNVERIFIED;
13321
13322                                 break;
13323                         }
13324                         case CEE_UNALIGNED_:
13325                                 ins_flag |= MONO_INST_UNALIGNED;
13326                                 /* FIXME: record alignment? we can assume 1 for now */
13327                                 CHECK_OPSIZE (3);
13328                                 ip += 3;
13329                                 break;
13330                         case CEE_VOLATILE_:
13331                                 ins_flag |= MONO_INST_VOLATILE;
13332                                 ip += 2;
13333                                 break;
13334                         case CEE_TAIL_:
13335                                 ins_flag   |= MONO_INST_TAILCALL;
13336                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13337                                 /* Can't inline tail calls at this time */
13338                                 inline_costs += 100000;
13339                                 ip += 2;
13340                                 break;
13341                         case CEE_INITOBJ:
13342                                 CHECK_STACK (1);
13343                                 --sp;
13344                                 CHECK_OPSIZE (6);
13345                                 token = read32 (ip + 2);
13346                                 klass = mini_get_class (method, token, generic_context);
13347                                 CHECK_TYPELOAD (klass);
13348                                 if (generic_class_is_reference_type (cfg, klass))
13349                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13350                                 else
13351                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13352                                 ip += 6;
13353                                 inline_costs += 1;
13354                                 break;
13355                         case CEE_CONSTRAINED_:
13356                                 CHECK_OPSIZE (6);
13357                                 token = read32 (ip + 2);
13358                                 constrained_class = mini_get_class (method, token, generic_context);
13359                                 CHECK_TYPELOAD (constrained_class);
13360                                 ip += 6;
13361                                 break;
13362                         case CEE_CPBLK:
13363                         case CEE_INITBLK: {
13364                                 MonoInst *iargs [3];
13365                                 CHECK_STACK (3);
13366                                 sp -= 3;
13367
13368                                 /* Skip optimized paths for volatile operations. */
13369                                 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)) {
13370                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13371                                 } 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)) {
13372                                         /* emit_memset only works when val == 0 */
13373                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13374                                 } else {
13375                                         MonoInst *call;
13376                                         iargs [0] = sp [0];
13377                                         iargs [1] = sp [1];
13378                                         iargs [2] = sp [2];
13379                                         if (ip [1] == CEE_CPBLK) {
13380                                                 /*
13381                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13382                                                  * and release barriers for cpblk. It is technically both a load and
13383                                                  * store operation, so it seems like that's the sensible thing to do.
13384                                                  *
13385                                                  * FIXME: We emit full barriers on both sides of the operation for
13386                                                  * simplicity. We should have a separate atomic memcpy method instead.
13387                                                  */
13388                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13389
13390                                                 if (ins_flag & MONO_INST_VOLATILE)
13391                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13392
13393                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13394                                                 call->flags |= ins_flag;
13395
13396                                                 if (ins_flag & MONO_INST_VOLATILE)
13397                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13398                                         } else {
13399                                                 MonoMethod *memset_method = get_memset_method ();
13400                                                 if (ins_flag & MONO_INST_VOLATILE) {
13401                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13402                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13403                                                 }
13404                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13405                                                 call->flags |= ins_flag;
13406                                         }
13407                                 }
13408                                 ip += 2;
13409                                 ins_flag = 0;
13410                                 inline_costs += 1;
13411                                 break;
13412                         }
13413                         case CEE_NO_:
13414                                 CHECK_OPSIZE (3);
13415                                 if (ip [2] & 0x1)
13416                                         ins_flag |= MONO_INST_NOTYPECHECK;
13417                                 if (ip [2] & 0x2)
13418                                         ins_flag |= MONO_INST_NORANGECHECK;
13419                                 /* we ignore the no-nullcheck for now since we
13420                                  * really do it explicitly only when doing callvirt->call
13421                                  */
13422                                 ip += 3;
13423                                 break;
13424                         case CEE_RETHROW: {
13425                                 MonoInst *load;
13426                                 int handler_offset = -1;
13427
13428                                 for (i = 0; i < header->num_clauses; ++i) {
13429                                         MonoExceptionClause *clause = &header->clauses [i];
13430                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13431                                                 handler_offset = clause->handler_offset;
13432                                                 break;
13433                                         }
13434                                 }
13435
13436                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13437
13438                                 if (handler_offset == -1)
13439                                         UNVERIFIED;
13440
13441                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13442                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13443                                 ins->sreg1 = load->dreg;
13444                                 MONO_ADD_INS (cfg->cbb, ins);
13445
13446                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13447                                 MONO_ADD_INS (cfg->cbb, ins);
13448
13449                                 sp = stack_start;
13450                                 link_bblock (cfg, cfg->cbb, end_bblock);
13451                                 start_new_bblock = 1;
13452                                 ip += 2;
13453                                 break;
13454                         }
13455                         case CEE_SIZEOF: {
13456                                 guint32 val;
13457                                 int ialign;
13458
13459                                 CHECK_STACK_OVF (1);
13460                                 CHECK_OPSIZE (6);
13461                                 token = read32 (ip + 2);
13462                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13463                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13464                                         CHECK_CFG_ERROR;
13465
13466                                         val = mono_type_size (type, &ialign);
13467                                 } else {
13468                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13469                                         CHECK_TYPELOAD (klass);
13470
13471                                         val = mono_type_size (&klass->byval_arg, &ialign);
13472
13473                                         if (mini_is_gsharedvt_klass (klass))
13474                                                 GSHAREDVT_FAILURE (*ip);
13475                                 }
13476                                 EMIT_NEW_ICONST (cfg, ins, val);
13477                                 *sp++= ins;
13478                                 ip += 6;
13479                                 break;
13480                         }
13481                         case CEE_REFANYTYPE: {
13482                                 MonoInst *src_var, *src;
13483
13484                                 GSHAREDVT_FAILURE (*ip);
13485
13486                                 CHECK_STACK (1);
13487                                 --sp;
13488
13489                                 // FIXME:
13490                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13491                                 if (!src_var)
13492                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13493                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13494                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13495                                 *sp++ = ins;
13496                                 ip += 2;
13497                                 break;
13498                         }
13499                         case CEE_READONLY_:
13500                                 readonly = TRUE;
13501                                 ip += 2;
13502                                 break;
13503
13504                         case CEE_UNUSED56:
13505                         case CEE_UNUSED57:
13506                         case CEE_UNUSED70:
13507                         case CEE_UNUSED:
13508                         case CEE_UNUSED99:
13509                                 UNVERIFIED;
13510
13511                         default:
13512                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13513                                 UNVERIFIED;
13514                         }
13515                         break;
13516                 }
13517                 case CEE_UNUSED58:
13518                 case CEE_UNUSED1:
13519                         UNVERIFIED;
13520
13521                 default:
13522                         g_warning ("opcode 0x%02x not handled", *ip);
13523                         UNVERIFIED;
13524                 }
13525         }
13526         if (start_new_bblock != 1)
13527                 UNVERIFIED;
13528
13529         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13530         if (cfg->cbb->next_bb) {
13531                 /* This could already be set because of inlining, #693905 */
13532                 MonoBasicBlock *bb = cfg->cbb;
13533
13534                 while (bb->next_bb)
13535                         bb = bb->next_bb;
13536                 bb->next_bb = end_bblock;
13537         } else {
13538                 cfg->cbb->next_bb = end_bblock;
13539         }
13540
13541         if (cfg->method == method && cfg->domainvar) {
13542                 MonoInst *store;
13543                 MonoInst *get_domain;
13544
13545                 cfg->cbb = init_localsbb;
13546
13547                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13548                         MONO_ADD_INS (cfg->cbb, get_domain);
13549                 } else {
13550                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13551                 }
13552                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13553                 MONO_ADD_INS (cfg->cbb, store);
13554         }
13555
13556 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13557         if (cfg->compile_aot)
13558                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13559                 mono_get_got_var (cfg);
13560 #endif
13561
13562         if (cfg->method == method && cfg->got_var)
13563                 mono_emit_load_got_addr (cfg);
13564
13565         if (init_localsbb) {
13566                 cfg->cbb = init_localsbb;
13567                 cfg->ip = NULL;
13568                 for (i = 0; i < header->num_locals; ++i) {
13569                         emit_init_local (cfg, i, header->locals [i], init_locals);
13570                 }
13571         }
13572
13573         if (cfg->init_ref_vars && cfg->method == method) {
13574                 /* Emit initialization for ref vars */
13575                 // FIXME: Avoid duplication initialization for IL locals.
13576                 for (i = 0; i < cfg->num_varinfo; ++i) {
13577                         MonoInst *ins = cfg->varinfo [i];
13578
13579                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13580                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13581                 }
13582         }
13583
13584         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13585                 cfg->cbb = init_localsbb;
13586                 emit_push_lmf (cfg);
13587         }
13588
13589         cfg->cbb = init_localsbb;
13590         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13591
13592         if (seq_points) {
13593                 MonoBasicBlock *bb;
13594
13595                 /*
13596                  * Make seq points at backward branch targets interruptable.
13597                  */
13598                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13599                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13600                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13601         }
13602
13603         /* Add a sequence point for method entry/exit events */
13604         if (seq_points && cfg->gen_sdb_seq_points) {
13605                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13606                 MONO_ADD_INS (init_localsbb, ins);
13607                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13608                 MONO_ADD_INS (cfg->bb_exit, ins);
13609         }
13610
13611         /*
13612          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13613          * the code they refer to was dead (#11880).
13614          */
13615         if (sym_seq_points) {
13616                 for (i = 0; i < header->code_size; ++i) {
13617                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13618                                 MonoInst *ins;
13619
13620                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13621                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13622                         }
13623                 }
13624         }
13625
13626         cfg->ip = NULL;
13627
13628         if (cfg->method == method) {
13629                 MonoBasicBlock *bb;
13630                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13631                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13632                         if (cfg->spvars)
13633                                 mono_create_spvar_for_region (cfg, bb->region);
13634                         if (cfg->verbose_level > 2)
13635                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13636                 }
13637         }
13638
13639         if (inline_costs < 0) {
13640                 char *mname;
13641
13642                 /* Method is too large */
13643                 mname = mono_method_full_name (method, TRUE);
13644                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13645                 g_free (mname);
13646         }
13647
13648         if ((cfg->verbose_level > 2) && (cfg->method == method))
13649                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13650
13651         goto cleanup;
13652
13653 mono_error_exit:
13654         g_assert (!mono_error_ok (&cfg->error));
13655         goto cleanup;
13656
13657  exception_exit:
13658         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13659         goto cleanup;
13660
13661  unverified:
13662         set_exception_type_from_invalid_il (cfg, method, ip);
13663         goto cleanup;
13664
13665  cleanup:
13666         g_slist_free (class_inits);
13667         mono_basic_block_free (original_bb);
13668         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13669         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13670         if (cfg->exception_type)
13671                 return -1;
13672         else
13673                 return inline_costs;
13674 }
13675
13676 static int
13677 store_membase_reg_to_store_membase_imm (int opcode)
13678 {
13679         switch (opcode) {
13680         case OP_STORE_MEMBASE_REG:
13681                 return OP_STORE_MEMBASE_IMM;
13682         case OP_STOREI1_MEMBASE_REG:
13683                 return OP_STOREI1_MEMBASE_IMM;
13684         case OP_STOREI2_MEMBASE_REG:
13685                 return OP_STOREI2_MEMBASE_IMM;
13686         case OP_STOREI4_MEMBASE_REG:
13687                 return OP_STOREI4_MEMBASE_IMM;
13688         case OP_STOREI8_MEMBASE_REG:
13689                 return OP_STOREI8_MEMBASE_IMM;
13690         default:
13691                 g_assert_not_reached ();
13692         }
13693
13694         return -1;
13695 }
13696
13697 int
13698 mono_op_to_op_imm (int opcode)
13699 {
13700         switch (opcode) {
13701         case OP_IADD:
13702                 return OP_IADD_IMM;
13703         case OP_ISUB:
13704                 return OP_ISUB_IMM;
13705         case OP_IDIV:
13706                 return OP_IDIV_IMM;
13707         case OP_IDIV_UN:
13708                 return OP_IDIV_UN_IMM;
13709         case OP_IREM:
13710                 return OP_IREM_IMM;
13711         case OP_IREM_UN:
13712                 return OP_IREM_UN_IMM;
13713         case OP_IMUL:
13714                 return OP_IMUL_IMM;
13715         case OP_IAND:
13716                 return OP_IAND_IMM;
13717         case OP_IOR:
13718                 return OP_IOR_IMM;
13719         case OP_IXOR:
13720                 return OP_IXOR_IMM;
13721         case OP_ISHL:
13722                 return OP_ISHL_IMM;
13723         case OP_ISHR:
13724                 return OP_ISHR_IMM;
13725         case OP_ISHR_UN:
13726                 return OP_ISHR_UN_IMM;
13727
13728         case OP_LADD:
13729                 return OP_LADD_IMM;
13730         case OP_LSUB:
13731                 return OP_LSUB_IMM;
13732         case OP_LAND:
13733                 return OP_LAND_IMM;
13734         case OP_LOR:
13735                 return OP_LOR_IMM;
13736         case OP_LXOR:
13737                 return OP_LXOR_IMM;
13738         case OP_LSHL:
13739                 return OP_LSHL_IMM;
13740         case OP_LSHR:
13741                 return OP_LSHR_IMM;
13742         case OP_LSHR_UN:
13743                 return OP_LSHR_UN_IMM;
13744 #if SIZEOF_REGISTER == 8
13745         case OP_LREM:
13746                 return OP_LREM_IMM;
13747 #endif
13748
13749         case OP_COMPARE:
13750                 return OP_COMPARE_IMM;
13751         case OP_ICOMPARE:
13752                 return OP_ICOMPARE_IMM;
13753         case OP_LCOMPARE:
13754                 return OP_LCOMPARE_IMM;
13755
13756         case OP_STORE_MEMBASE_REG:
13757                 return OP_STORE_MEMBASE_IMM;
13758         case OP_STOREI1_MEMBASE_REG:
13759                 return OP_STOREI1_MEMBASE_IMM;
13760         case OP_STOREI2_MEMBASE_REG:
13761                 return OP_STOREI2_MEMBASE_IMM;
13762         case OP_STOREI4_MEMBASE_REG:
13763                 return OP_STOREI4_MEMBASE_IMM;
13764
13765 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13766         case OP_X86_PUSH:
13767                 return OP_X86_PUSH_IMM;
13768         case OP_X86_COMPARE_MEMBASE_REG:
13769                 return OP_X86_COMPARE_MEMBASE_IMM;
13770 #endif
13771 #if defined(TARGET_AMD64)
13772         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13773                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13774 #endif
13775         case OP_VOIDCALL_REG:
13776                 return OP_VOIDCALL;
13777         case OP_CALL_REG:
13778                 return OP_CALL;
13779         case OP_LCALL_REG:
13780                 return OP_LCALL;
13781         case OP_FCALL_REG:
13782                 return OP_FCALL;
13783         case OP_LOCALLOC:
13784                 return OP_LOCALLOC_IMM;
13785         }
13786
13787         return -1;
13788 }
13789
13790 static int
13791 ldind_to_load_membase (int opcode)
13792 {
13793         switch (opcode) {
13794         case CEE_LDIND_I1:
13795                 return OP_LOADI1_MEMBASE;
13796         case CEE_LDIND_U1:
13797                 return OP_LOADU1_MEMBASE;
13798         case CEE_LDIND_I2:
13799                 return OP_LOADI2_MEMBASE;
13800         case CEE_LDIND_U2:
13801                 return OP_LOADU2_MEMBASE;
13802         case CEE_LDIND_I4:
13803                 return OP_LOADI4_MEMBASE;
13804         case CEE_LDIND_U4:
13805                 return OP_LOADU4_MEMBASE;
13806         case CEE_LDIND_I:
13807                 return OP_LOAD_MEMBASE;
13808         case CEE_LDIND_REF:
13809                 return OP_LOAD_MEMBASE;
13810         case CEE_LDIND_I8:
13811                 return OP_LOADI8_MEMBASE;
13812         case CEE_LDIND_R4:
13813                 return OP_LOADR4_MEMBASE;
13814         case CEE_LDIND_R8:
13815                 return OP_LOADR8_MEMBASE;
13816         default:
13817                 g_assert_not_reached ();
13818         }
13819
13820         return -1;
13821 }
13822
13823 static int
13824 stind_to_store_membase (int opcode)
13825 {
13826         switch (opcode) {
13827         case CEE_STIND_I1:
13828                 return OP_STOREI1_MEMBASE_REG;
13829         case CEE_STIND_I2:
13830                 return OP_STOREI2_MEMBASE_REG;
13831         case CEE_STIND_I4:
13832                 return OP_STOREI4_MEMBASE_REG;
13833         case CEE_STIND_I:
13834         case CEE_STIND_REF:
13835                 return OP_STORE_MEMBASE_REG;
13836         case CEE_STIND_I8:
13837                 return OP_STOREI8_MEMBASE_REG;
13838         case CEE_STIND_R4:
13839                 return OP_STORER4_MEMBASE_REG;
13840         case CEE_STIND_R8:
13841                 return OP_STORER8_MEMBASE_REG;
13842         default:
13843                 g_assert_not_reached ();
13844         }
13845
13846         return -1;
13847 }
13848
13849 int
13850 mono_load_membase_to_load_mem (int opcode)
13851 {
13852         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13853 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13854         switch (opcode) {
13855         case OP_LOAD_MEMBASE:
13856                 return OP_LOAD_MEM;
13857         case OP_LOADU1_MEMBASE:
13858                 return OP_LOADU1_MEM;
13859         case OP_LOADU2_MEMBASE:
13860                 return OP_LOADU2_MEM;
13861         case OP_LOADI4_MEMBASE:
13862                 return OP_LOADI4_MEM;
13863         case OP_LOADU4_MEMBASE:
13864                 return OP_LOADU4_MEM;
13865 #if SIZEOF_REGISTER == 8
13866         case OP_LOADI8_MEMBASE:
13867                 return OP_LOADI8_MEM;
13868 #endif
13869         }
13870 #endif
13871
13872         return -1;
13873 }
13874
13875 static inline int
13876 op_to_op_dest_membase (int store_opcode, int opcode)
13877 {
13878 #if defined(TARGET_X86)
13879         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13880                 return -1;
13881
13882         switch (opcode) {
13883         case OP_IADD:
13884                 return OP_X86_ADD_MEMBASE_REG;
13885         case OP_ISUB:
13886                 return OP_X86_SUB_MEMBASE_REG;
13887         case OP_IAND:
13888                 return OP_X86_AND_MEMBASE_REG;
13889         case OP_IOR:
13890                 return OP_X86_OR_MEMBASE_REG;
13891         case OP_IXOR:
13892                 return OP_X86_XOR_MEMBASE_REG;
13893         case OP_ADD_IMM:
13894         case OP_IADD_IMM:
13895                 return OP_X86_ADD_MEMBASE_IMM;
13896         case OP_SUB_IMM:
13897         case OP_ISUB_IMM:
13898                 return OP_X86_SUB_MEMBASE_IMM;
13899         case OP_AND_IMM:
13900         case OP_IAND_IMM:
13901                 return OP_X86_AND_MEMBASE_IMM;
13902         case OP_OR_IMM:
13903         case OP_IOR_IMM:
13904                 return OP_X86_OR_MEMBASE_IMM;
13905         case OP_XOR_IMM:
13906         case OP_IXOR_IMM:
13907                 return OP_X86_XOR_MEMBASE_IMM;
13908         case OP_MOVE:
13909                 return OP_NOP;
13910         }
13911 #endif
13912
13913 #if defined(TARGET_AMD64)
13914         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13915                 return -1;
13916
13917         switch (opcode) {
13918         case OP_IADD:
13919                 return OP_X86_ADD_MEMBASE_REG;
13920         case OP_ISUB:
13921                 return OP_X86_SUB_MEMBASE_REG;
13922         case OP_IAND:
13923                 return OP_X86_AND_MEMBASE_REG;
13924         case OP_IOR:
13925                 return OP_X86_OR_MEMBASE_REG;
13926         case OP_IXOR:
13927                 return OP_X86_XOR_MEMBASE_REG;
13928         case OP_IADD_IMM:
13929                 return OP_X86_ADD_MEMBASE_IMM;
13930         case OP_ISUB_IMM:
13931                 return OP_X86_SUB_MEMBASE_IMM;
13932         case OP_IAND_IMM:
13933                 return OP_X86_AND_MEMBASE_IMM;
13934         case OP_IOR_IMM:
13935                 return OP_X86_OR_MEMBASE_IMM;
13936         case OP_IXOR_IMM:
13937                 return OP_X86_XOR_MEMBASE_IMM;
13938         case OP_LADD:
13939                 return OP_AMD64_ADD_MEMBASE_REG;
13940         case OP_LSUB:
13941                 return OP_AMD64_SUB_MEMBASE_REG;
13942         case OP_LAND:
13943                 return OP_AMD64_AND_MEMBASE_REG;
13944         case OP_LOR:
13945                 return OP_AMD64_OR_MEMBASE_REG;
13946         case OP_LXOR:
13947                 return OP_AMD64_XOR_MEMBASE_REG;
13948         case OP_ADD_IMM:
13949         case OP_LADD_IMM:
13950                 return OP_AMD64_ADD_MEMBASE_IMM;
13951         case OP_SUB_IMM:
13952         case OP_LSUB_IMM:
13953                 return OP_AMD64_SUB_MEMBASE_IMM;
13954         case OP_AND_IMM:
13955         case OP_LAND_IMM:
13956                 return OP_AMD64_AND_MEMBASE_IMM;
13957         case OP_OR_IMM:
13958         case OP_LOR_IMM:
13959                 return OP_AMD64_OR_MEMBASE_IMM;
13960         case OP_XOR_IMM:
13961         case OP_LXOR_IMM:
13962                 return OP_AMD64_XOR_MEMBASE_IMM;
13963         case OP_MOVE:
13964                 return OP_NOP;
13965         }
13966 #endif
13967
13968         return -1;
13969 }
13970
13971 static inline int
13972 op_to_op_store_membase (int store_opcode, int opcode)
13973 {
13974 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13975         switch (opcode) {
13976         case OP_ICEQ:
13977                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13978                         return OP_X86_SETEQ_MEMBASE;
13979         case OP_CNE:
13980                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13981                         return OP_X86_SETNE_MEMBASE;
13982         }
13983 #endif
13984
13985         return -1;
13986 }
13987
13988 static inline int
13989 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13990 {
13991 #ifdef TARGET_X86
13992         /* FIXME: This has sign extension issues */
13993         /*
13994         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13995                 return OP_X86_COMPARE_MEMBASE8_IMM;
13996         */
13997
13998         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13999                 return -1;
14000
14001         switch (opcode) {
14002         case OP_X86_PUSH:
14003                 return OP_X86_PUSH_MEMBASE;
14004         case OP_COMPARE_IMM:
14005         case OP_ICOMPARE_IMM:
14006                 return OP_X86_COMPARE_MEMBASE_IMM;
14007         case OP_COMPARE:
14008         case OP_ICOMPARE:
14009                 return OP_X86_COMPARE_MEMBASE_REG;
14010         }
14011 #endif
14012
14013 #ifdef TARGET_AMD64
14014         /* FIXME: This has sign extension issues */
14015         /*
14016         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14017                 return OP_X86_COMPARE_MEMBASE8_IMM;
14018         */
14019
14020         switch (opcode) {
14021         case OP_X86_PUSH:
14022                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14023                         return OP_X86_PUSH_MEMBASE;
14024                 break;
14025                 /* FIXME: This only works for 32 bit immediates
14026         case OP_COMPARE_IMM:
14027         case OP_LCOMPARE_IMM:
14028                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14029                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14030                 */
14031         case OP_ICOMPARE_IMM:
14032                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14033                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14034                 break;
14035         case OP_COMPARE:
14036         case OP_LCOMPARE:
14037                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14038                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14039                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14040                         return OP_AMD64_COMPARE_MEMBASE_REG;
14041                 break;
14042         case OP_ICOMPARE:
14043                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14044                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14045                 break;
14046         }
14047 #endif
14048
14049         return -1;
14050 }
14051
14052 static inline int
14053 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14054 {
14055 #ifdef TARGET_X86
14056         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14057                 return -1;
14058
14059         switch (opcode) {
14060         case OP_COMPARE:
14061         case OP_ICOMPARE:
14062                 return OP_X86_COMPARE_REG_MEMBASE;
14063         case OP_IADD:
14064                 return OP_X86_ADD_REG_MEMBASE;
14065         case OP_ISUB:
14066                 return OP_X86_SUB_REG_MEMBASE;
14067         case OP_IAND:
14068                 return OP_X86_AND_REG_MEMBASE;
14069         case OP_IOR:
14070                 return OP_X86_OR_REG_MEMBASE;
14071         case OP_IXOR:
14072                 return OP_X86_XOR_REG_MEMBASE;
14073         }
14074 #endif
14075
14076 #ifdef TARGET_AMD64
14077         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14078                 switch (opcode) {
14079                 case OP_ICOMPARE:
14080                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14081                 case OP_IADD:
14082                         return OP_X86_ADD_REG_MEMBASE;
14083                 case OP_ISUB:
14084                         return OP_X86_SUB_REG_MEMBASE;
14085                 case OP_IAND:
14086                         return OP_X86_AND_REG_MEMBASE;
14087                 case OP_IOR:
14088                         return OP_X86_OR_REG_MEMBASE;
14089                 case OP_IXOR:
14090                         return OP_X86_XOR_REG_MEMBASE;
14091                 }
14092         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14093                 switch (opcode) {
14094                 case OP_COMPARE:
14095                 case OP_LCOMPARE:
14096                         return OP_AMD64_COMPARE_REG_MEMBASE;
14097                 case OP_LADD:
14098                         return OP_AMD64_ADD_REG_MEMBASE;
14099                 case OP_LSUB:
14100                         return OP_AMD64_SUB_REG_MEMBASE;
14101                 case OP_LAND:
14102                         return OP_AMD64_AND_REG_MEMBASE;
14103                 case OP_LOR:
14104                         return OP_AMD64_OR_REG_MEMBASE;
14105                 case OP_LXOR:
14106                         return OP_AMD64_XOR_REG_MEMBASE;
14107                 }
14108         }
14109 #endif
14110
14111         return -1;
14112 }
14113
14114 int
14115 mono_op_to_op_imm_noemul (int opcode)
14116 {
14117         switch (opcode) {
14118 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14119         case OP_LSHR:
14120         case OP_LSHL:
14121         case OP_LSHR_UN:
14122                 return -1;
14123 #endif
14124 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14125         case OP_IDIV:
14126         case OP_IDIV_UN:
14127         case OP_IREM:
14128         case OP_IREM_UN:
14129                 return -1;
14130 #endif
14131 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14132         case OP_IMUL:
14133                 return -1;
14134 #endif
14135         default:
14136                 return mono_op_to_op_imm (opcode);
14137         }
14138 }
14139
14140 /**
14141  * mono_handle_global_vregs:
14142  *
14143  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14144  * for them.
14145  */
14146 void
14147 mono_handle_global_vregs (MonoCompile *cfg)
14148 {
14149         gint32 *vreg_to_bb;
14150         MonoBasicBlock *bb;
14151         int i, pos;
14152
14153         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14154
14155 #ifdef MONO_ARCH_SIMD_INTRINSICS
14156         if (cfg->uses_simd_intrinsics)
14157                 mono_simd_simplify_indirection (cfg);
14158 #endif
14159
14160         /* Find local vregs used in more than one bb */
14161         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14162                 MonoInst *ins = bb->code;
14163                 int block_num = bb->block_num;
14164
14165                 if (cfg->verbose_level > 2)
14166                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14167
14168                 cfg->cbb = bb;
14169                 for (; ins; ins = ins->next) {
14170                         const char *spec = INS_INFO (ins->opcode);
14171                         int regtype = 0, regindex;
14172                         gint32 prev_bb;
14173
14174                         if (G_UNLIKELY (cfg->verbose_level > 2))
14175                                 mono_print_ins (ins);
14176
14177                         g_assert (ins->opcode >= MONO_CEE_LAST);
14178
14179                         for (regindex = 0; regindex < 4; regindex ++) {
14180                                 int vreg = 0;
14181
14182                                 if (regindex == 0) {
14183                                         regtype = spec [MONO_INST_DEST];
14184                                         if (regtype == ' ')
14185                                                 continue;
14186                                         vreg = ins->dreg;
14187                                 } else if (regindex == 1) {
14188                                         regtype = spec [MONO_INST_SRC1];
14189                                         if (regtype == ' ')
14190                                                 continue;
14191                                         vreg = ins->sreg1;
14192                                 } else if (regindex == 2) {
14193                                         regtype = spec [MONO_INST_SRC2];
14194                                         if (regtype == ' ')
14195                                                 continue;
14196                                         vreg = ins->sreg2;
14197                                 } else if (regindex == 3) {
14198                                         regtype = spec [MONO_INST_SRC3];
14199                                         if (regtype == ' ')
14200                                                 continue;
14201                                         vreg = ins->sreg3;
14202                                 }
14203
14204 #if SIZEOF_REGISTER == 4
14205                                 /* In the LLVM case, the long opcodes are not decomposed */
14206                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14207                                         /*
14208                                          * Since some instructions reference the original long vreg,
14209                                          * and some reference the two component vregs, it is quite hard
14210                                          * to determine when it needs to be global. So be conservative.
14211                                          */
14212                                         if (!get_vreg_to_inst (cfg, vreg)) {
14213                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14214
14215                                                 if (cfg->verbose_level > 2)
14216                                                         printf ("LONG VREG R%d made global.\n", vreg);
14217                                         }
14218
14219                                         /*
14220                                          * Make the component vregs volatile since the optimizations can
14221                                          * get confused otherwise.
14222                                          */
14223                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14224                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14225                                 }
14226 #endif
14227
14228                                 g_assert (vreg != -1);
14229
14230                                 prev_bb = vreg_to_bb [vreg];
14231                                 if (prev_bb == 0) {
14232                                         /* 0 is a valid block num */
14233                                         vreg_to_bb [vreg] = block_num + 1;
14234                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14235                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14236                                                 continue;
14237
14238                                         if (!get_vreg_to_inst (cfg, vreg)) {
14239                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14240                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14241
14242                                                 switch (regtype) {
14243                                                 case 'i':
14244                                                         if (vreg_is_ref (cfg, vreg))
14245                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14246                                                         else
14247                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14248                                                         break;
14249                                                 case 'l':
14250                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14251                                                         break;
14252                                                 case 'f':
14253                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14254                                                         break;
14255                                                 case 'v':
14256                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14257                                                         break;
14258                                                 default:
14259                                                         g_assert_not_reached ();
14260                                                 }
14261                                         }
14262
14263                                         /* Flag as having been used in more than one bb */
14264                                         vreg_to_bb [vreg] = -1;
14265                                 }
14266                         }
14267                 }
14268         }
14269
14270         /* If a variable is used in only one bblock, convert it into a local vreg */
14271         for (i = 0; i < cfg->num_varinfo; i++) {
14272                 MonoInst *var = cfg->varinfo [i];
14273                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14274
14275                 switch (var->type) {
14276                 case STACK_I4:
14277                 case STACK_OBJ:
14278                 case STACK_PTR:
14279                 case STACK_MP:
14280                 case STACK_VTYPE:
14281 #if SIZEOF_REGISTER == 8
14282                 case STACK_I8:
14283 #endif
14284 #if !defined(TARGET_X86)
14285                 /* Enabling this screws up the fp stack on x86 */
14286                 case STACK_R8:
14287 #endif
14288                         if (mono_arch_is_soft_float ())
14289                                 break;
14290
14291                         /*
14292                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14293                                 break;
14294                         */
14295
14296                         /* Arguments are implicitly global */
14297                         /* Putting R4 vars into registers doesn't work currently */
14298                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14299                         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) {
14300                                 /*
14301                                  * Make that the variable's liveness interval doesn't contain a call, since
14302                                  * that would cause the lvreg to be spilled, making the whole optimization
14303                                  * useless.
14304                                  */
14305                                 /* This is too slow for JIT compilation */
14306 #if 0
14307                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14308                                         MonoInst *ins;
14309                                         int def_index, call_index, ins_index;
14310                                         gboolean spilled = FALSE;
14311
14312                                         def_index = -1;
14313                                         call_index = -1;
14314                                         ins_index = 0;
14315                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14316                                                 const char *spec = INS_INFO (ins->opcode);
14317
14318                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14319                                                         def_index = ins_index;
14320
14321                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14322                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14323                                                         if (call_index > def_index) {
14324                                                                 spilled = TRUE;
14325                                                                 break;
14326                                                         }
14327                                                 }
14328
14329                                                 if (MONO_IS_CALL (ins))
14330                                                         call_index = ins_index;
14331
14332                                                 ins_index ++;
14333                                         }
14334
14335                                         if (spilled)
14336                                                 break;
14337                                 }
14338 #endif
14339
14340                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14341                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14342                                 var->flags |= MONO_INST_IS_DEAD;
14343                                 cfg->vreg_to_inst [var->dreg] = NULL;
14344                         }
14345                         break;
14346                 }
14347         }
14348
14349         /*
14350          * Compress the varinfo and vars tables so the liveness computation is faster and
14351          * takes up less space.
14352          */
14353         pos = 0;
14354         for (i = 0; i < cfg->num_varinfo; ++i) {
14355                 MonoInst *var = cfg->varinfo [i];
14356                 if (pos < i && cfg->locals_start == i)
14357                         cfg->locals_start = pos;
14358                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14359                         if (pos < i) {
14360                                 cfg->varinfo [pos] = cfg->varinfo [i];
14361                                 cfg->varinfo [pos]->inst_c0 = pos;
14362                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14363                                 cfg->vars [pos].idx = pos;
14364 #if SIZEOF_REGISTER == 4
14365                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14366                                         /* Modify the two component vars too */
14367                                         MonoInst *var1;
14368
14369                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14370                                         var1->inst_c0 = pos;
14371                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14372                                         var1->inst_c0 = pos;
14373                                 }
14374 #endif
14375                         }
14376                         pos ++;
14377                 }
14378         }
14379         cfg->num_varinfo = pos;
14380         if (cfg->locals_start > cfg->num_varinfo)
14381                 cfg->locals_start = cfg->num_varinfo;
14382 }
14383
14384 /*
14385  * mono_allocate_gsharedvt_vars:
14386  *
14387  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14388  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14389  */
14390 void
14391 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14392 {
14393         int i;
14394
14395         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14396
14397         for (i = 0; i < cfg->num_varinfo; ++i) {
14398                 MonoInst *ins = cfg->varinfo [i];
14399                 int idx;
14400
14401                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14402                         if (i >= cfg->locals_start) {
14403                                 /* Local */
14404                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14405                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14406                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14407                                 ins->inst_imm = idx;
14408                         } else {
14409                                 /* Arg */
14410                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14411                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14412                         }
14413                 }
14414         }
14415 }
14416
14417 /**
14418  * mono_spill_global_vars:
14419  *
14420  *   Generate spill code for variables which are not allocated to registers,
14421  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14422  * code is generated which could be optimized by the local optimization passes.
14423  */
14424 void
14425 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14426 {
14427         MonoBasicBlock *bb;
14428         char spec2 [16];
14429         int orig_next_vreg;
14430         guint32 *vreg_to_lvreg;
14431         guint32 *lvregs;
14432         guint32 i, lvregs_len;
14433         gboolean dest_has_lvreg = FALSE;
14434         MonoStackType stacktypes [128];
14435         MonoInst **live_range_start, **live_range_end;
14436         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14437
14438         *need_local_opts = FALSE;
14439
14440         memset (spec2, 0, sizeof (spec2));
14441
14442         /* FIXME: Move this function to mini.c */
14443         stacktypes ['i'] = STACK_PTR;
14444         stacktypes ['l'] = STACK_I8;
14445         stacktypes ['f'] = STACK_R8;
14446 #ifdef MONO_ARCH_SIMD_INTRINSICS
14447         stacktypes ['x'] = STACK_VTYPE;
14448 #endif
14449
14450 #if SIZEOF_REGISTER == 4
14451         /* Create MonoInsts for longs */
14452         for (i = 0; i < cfg->num_varinfo; i++) {
14453                 MonoInst *ins = cfg->varinfo [i];
14454
14455                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14456                         switch (ins->type) {
14457                         case STACK_R8:
14458                         case STACK_I8: {
14459                                 MonoInst *tree;
14460
14461                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14462                                         break;
14463
14464                                 g_assert (ins->opcode == OP_REGOFFSET);
14465
14466                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14467                                 g_assert (tree);
14468                                 tree->opcode = OP_REGOFFSET;
14469                                 tree->inst_basereg = ins->inst_basereg;
14470                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14471
14472                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14473                                 g_assert (tree);
14474                                 tree->opcode = OP_REGOFFSET;
14475                                 tree->inst_basereg = ins->inst_basereg;
14476                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14477                                 break;
14478                         }
14479                         default:
14480                                 break;
14481                         }
14482                 }
14483         }
14484 #endif
14485
14486         if (cfg->compute_gc_maps) {
14487                 /* registers need liveness info even for !non refs */
14488                 for (i = 0; i < cfg->num_varinfo; i++) {
14489                         MonoInst *ins = cfg->varinfo [i];
14490
14491                         if (ins->opcode == OP_REGVAR)
14492                                 ins->flags |= MONO_INST_GC_TRACK;
14493                 }
14494         }
14495
14496         /* FIXME: widening and truncation */
14497
14498         /*
14499          * As an optimization, when a variable allocated to the stack is first loaded into
14500          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14501          * the variable again.
14502          */
14503         orig_next_vreg = cfg->next_vreg;
14504         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14505         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14506         lvregs_len = 0;
14507
14508         /*
14509          * These arrays contain the first and last instructions accessing a given
14510          * variable.
14511          * Since we emit bblocks in the same order we process them here, and we
14512          * don't split live ranges, these will precisely describe the live range of
14513          * the variable, i.e. the instruction range where a valid value can be found
14514          * in the variables location.
14515          * The live range is computed using the liveness info computed by the liveness pass.
14516          * We can't use vmv->range, since that is an abstract live range, and we need
14517          * one which is instruction precise.
14518          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14519          */
14520         /* FIXME: Only do this if debugging info is requested */
14521         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14522         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14523         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14524         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14525
14526         /* Add spill loads/stores */
14527         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14528                 MonoInst *ins;
14529
14530                 if (cfg->verbose_level > 2)
14531                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14532
14533                 /* Clear vreg_to_lvreg array */
14534                 for (i = 0; i < lvregs_len; i++)
14535                         vreg_to_lvreg [lvregs [i]] = 0;
14536                 lvregs_len = 0;
14537
14538                 cfg->cbb = bb;
14539                 MONO_BB_FOR_EACH_INS (bb, ins) {
14540                         const char *spec = INS_INFO (ins->opcode);
14541                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14542                         gboolean store, no_lvreg;
14543                         int sregs [MONO_MAX_SRC_REGS];
14544
14545                         if (G_UNLIKELY (cfg->verbose_level > 2))
14546                                 mono_print_ins (ins);
14547
14548                         if (ins->opcode == OP_NOP)
14549                                 continue;
14550
14551                         /*
14552                          * We handle LDADDR here as well, since it can only be decomposed
14553                          * when variable addresses are known.
14554                          */
14555                         if (ins->opcode == OP_LDADDR) {
14556                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14557
14558                                 if (var->opcode == OP_VTARG_ADDR) {
14559                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14560                                         MonoInst *vtaddr = var->inst_left;
14561                                         if (vtaddr->opcode == OP_REGVAR) {
14562                                                 ins->opcode = OP_MOVE;
14563                                                 ins->sreg1 = vtaddr->dreg;
14564                                         }
14565                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14566                                                 ins->opcode = OP_LOAD_MEMBASE;
14567                                                 ins->inst_basereg = vtaddr->inst_basereg;
14568                                                 ins->inst_offset = vtaddr->inst_offset;
14569                                         } else
14570                                                 NOT_IMPLEMENTED;
14571                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14572                                         /* gsharedvt arg passed by ref */
14573                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14574
14575                                         ins->opcode = OP_LOAD_MEMBASE;
14576                                         ins->inst_basereg = var->inst_basereg;
14577                                         ins->inst_offset = var->inst_offset;
14578                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14579                                         MonoInst *load, *load2, *load3;
14580                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14581                                         int reg1, reg2, reg3;
14582                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14583                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14584
14585                                         /*
14586                                          * gsharedvt local.
14587                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14588                                          */
14589
14590                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14591
14592                                         g_assert (info_var);
14593                                         g_assert (locals_var);
14594
14595                                         /* Mark the instruction used to compute the locals var as used */
14596                                         cfg->gsharedvt_locals_var_ins = NULL;
14597
14598                                         /* Load the offset */
14599                                         if (info_var->opcode == OP_REGOFFSET) {
14600                                                 reg1 = alloc_ireg (cfg);
14601                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14602                                         } else if (info_var->opcode == OP_REGVAR) {
14603                                                 load = NULL;
14604                                                 reg1 = info_var->dreg;
14605                                         } else {
14606                                                 g_assert_not_reached ();
14607                                         }
14608                                         reg2 = alloc_ireg (cfg);
14609                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14610                                         /* Load the locals area address */
14611                                         reg3 = alloc_ireg (cfg);
14612                                         if (locals_var->opcode == OP_REGOFFSET) {
14613                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14614                                         } else if (locals_var->opcode == OP_REGVAR) {
14615                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14616                                         } else {
14617                                                 g_assert_not_reached ();
14618                                         }
14619                                         /* Compute the address */
14620                                         ins->opcode = OP_PADD;
14621                                         ins->sreg1 = reg3;
14622                                         ins->sreg2 = reg2;
14623
14624                                         mono_bblock_insert_before_ins (bb, ins, load3);
14625                                         mono_bblock_insert_before_ins (bb, load3, load2);
14626                                         if (load)
14627                                                 mono_bblock_insert_before_ins (bb, load2, load);
14628                                 } else {
14629                                         g_assert (var->opcode == OP_REGOFFSET);
14630
14631                                         ins->opcode = OP_ADD_IMM;
14632                                         ins->sreg1 = var->inst_basereg;
14633                                         ins->inst_imm = var->inst_offset;
14634                                 }
14635
14636                                 *need_local_opts = TRUE;
14637                                 spec = INS_INFO (ins->opcode);
14638                         }
14639
14640                         if (ins->opcode < MONO_CEE_LAST) {
14641                                 mono_print_ins (ins);
14642                                 g_assert_not_reached ();
14643                         }
14644
14645                         /*
14646                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14647                          * src register.
14648                          * FIXME:
14649                          */
14650                         if (MONO_IS_STORE_MEMBASE (ins)) {
14651                                 tmp_reg = ins->dreg;
14652                                 ins->dreg = ins->sreg2;
14653                                 ins->sreg2 = tmp_reg;
14654                                 store = TRUE;
14655
14656                                 spec2 [MONO_INST_DEST] = ' ';
14657                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14658                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14659                                 spec2 [MONO_INST_SRC3] = ' ';
14660                                 spec = spec2;
14661                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14662                                 g_assert_not_reached ();
14663                         else
14664                                 store = FALSE;
14665                         no_lvreg = FALSE;
14666
14667                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14668                                 printf ("\t %.3s %d", spec, ins->dreg);
14669                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14670                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14671                                         printf (" %d", sregs [srcindex]);
14672                                 printf ("\n");
14673                         }
14674
14675                         /***************/
14676                         /*    DREG     */
14677                         /***************/
14678                         regtype = spec [MONO_INST_DEST];
14679                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14680                         prev_dreg = -1;
14681
14682                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14683                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14684                                 MonoInst *store_ins;
14685                                 int store_opcode;
14686                                 MonoInst *def_ins = ins;
14687                                 int dreg = ins->dreg; /* The original vreg */
14688
14689                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14690
14691                                 if (var->opcode == OP_REGVAR) {
14692                                         ins->dreg = var->dreg;
14693                                 } 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)) {
14694                                         /*
14695                                          * Instead of emitting a load+store, use a _membase opcode.
14696                                          */
14697                                         g_assert (var->opcode == OP_REGOFFSET);
14698                                         if (ins->opcode == OP_MOVE) {
14699                                                 NULLIFY_INS (ins);
14700                                                 def_ins = NULL;
14701                                         } else {
14702                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14703                                                 ins->inst_basereg = var->inst_basereg;
14704                                                 ins->inst_offset = var->inst_offset;
14705                                                 ins->dreg = -1;
14706                                         }
14707                                         spec = INS_INFO (ins->opcode);
14708                                 } else {
14709                                         guint32 lvreg;
14710
14711                                         g_assert (var->opcode == OP_REGOFFSET);
14712
14713                                         prev_dreg = ins->dreg;
14714
14715                                         /* Invalidate any previous lvreg for this vreg */
14716                                         vreg_to_lvreg [ins->dreg] = 0;
14717
14718                                         lvreg = 0;
14719
14720                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14721                                                 regtype = 'l';
14722                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14723                                         }
14724
14725                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14726
14727 #if SIZEOF_REGISTER != 8
14728                                         if (regtype == 'l') {
14729                                                 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));
14730                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14731                                                 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));
14732                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14733                                                 def_ins = store_ins;
14734                                         }
14735                                         else
14736 #endif
14737                                         {
14738                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14739
14740                                                 /* Try to fuse the store into the instruction itself */
14741                                                 /* FIXME: Add more instructions */
14742                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14743                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14744                                                         ins->inst_imm = ins->inst_c0;
14745                                                         ins->inst_destbasereg = var->inst_basereg;
14746                                                         ins->inst_offset = var->inst_offset;
14747                                                         spec = INS_INFO (ins->opcode);
14748                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14749                                                         ins->opcode = store_opcode;
14750                                                         ins->inst_destbasereg = var->inst_basereg;
14751                                                         ins->inst_offset = var->inst_offset;
14752
14753                                                         no_lvreg = TRUE;
14754
14755                                                         tmp_reg = ins->dreg;
14756                                                         ins->dreg = ins->sreg2;
14757                                                         ins->sreg2 = tmp_reg;
14758                                                         store = TRUE;
14759
14760                                                         spec2 [MONO_INST_DEST] = ' ';
14761                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14762                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14763                                                         spec2 [MONO_INST_SRC3] = ' ';
14764                                                         spec = spec2;
14765                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14766                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14767                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14768                                                         ins->dreg = -1;
14769                                                         ins->inst_basereg = var->inst_basereg;
14770                                                         ins->inst_offset = var->inst_offset;
14771                                                         spec = INS_INFO (ins->opcode);
14772                                                 } else {
14773                                                         /* printf ("INS: "); mono_print_ins (ins); */
14774                                                         /* Create a store instruction */
14775                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14776
14777                                                         /* Insert it after the instruction */
14778                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14779
14780                                                         def_ins = store_ins;
14781
14782                                                         /*
14783                                                          * We can't assign ins->dreg to var->dreg here, since the
14784                                                          * sregs could use it. So set a flag, and do it after
14785                                                          * the sregs.
14786                                                          */
14787                                                         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)))
14788                                                                 dest_has_lvreg = TRUE;
14789                                                 }
14790                                         }
14791                                 }
14792
14793                                 if (def_ins && !live_range_start [dreg]) {
14794                                         live_range_start [dreg] = def_ins;
14795                                         live_range_start_bb [dreg] = bb;
14796                                 }
14797
14798                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14799                                         MonoInst *tmp;
14800
14801                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14802                                         tmp->inst_c1 = dreg;
14803                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14804                                 }
14805                         }
14806
14807                         /************/
14808                         /*  SREGS   */
14809                         /************/
14810                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14811                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14812                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14813                                 sreg = sregs [srcindex];
14814
14815                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14816                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14817                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14818                                         MonoInst *use_ins = ins;
14819                                         MonoInst *load_ins;
14820                                         guint32 load_opcode;
14821
14822                                         if (var->opcode == OP_REGVAR) {
14823                                                 sregs [srcindex] = var->dreg;
14824                                                 //mono_inst_set_src_registers (ins, sregs);
14825                                                 live_range_end [sreg] = use_ins;
14826                                                 live_range_end_bb [sreg] = bb;
14827
14828                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14829                                                         MonoInst *tmp;
14830
14831                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14832                                                         /* var->dreg is a hreg */
14833                                                         tmp->inst_c1 = sreg;
14834                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14835                                                 }
14836
14837                                                 continue;
14838                                         }
14839
14840                                         g_assert (var->opcode == OP_REGOFFSET);
14841
14842                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14843
14844                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14845
14846                                         if (vreg_to_lvreg [sreg]) {
14847                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14848
14849                                                 /* The variable is already loaded to an lvreg */
14850                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14851                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14852                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14853                                                 //mono_inst_set_src_registers (ins, sregs);
14854                                                 continue;
14855                                         }
14856
14857                                         /* Try to fuse the load into the instruction */
14858                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14859                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14860                                                 sregs [0] = var->inst_basereg;
14861                                                 //mono_inst_set_src_registers (ins, sregs);
14862                                                 ins->inst_offset = var->inst_offset;
14863                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14864                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14865                                                 sregs [1] = var->inst_basereg;
14866                                                 //mono_inst_set_src_registers (ins, sregs);
14867                                                 ins->inst_offset = var->inst_offset;
14868                                         } else {
14869                                                 if (MONO_IS_REAL_MOVE (ins)) {
14870                                                         ins->opcode = OP_NOP;
14871                                                         sreg = ins->dreg;
14872                                                 } else {
14873                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14874
14875                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14876
14877                                                         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) {
14878                                                                 if (var->dreg == prev_dreg) {
14879                                                                         /*
14880                                                                          * sreg refers to the value loaded by the load
14881                                                                          * emitted below, but we need to use ins->dreg
14882                                                                          * since it refers to the store emitted earlier.
14883                                                                          */
14884                                                                         sreg = ins->dreg;
14885                                                                 }
14886                                                                 g_assert (sreg != -1);
14887                                                                 vreg_to_lvreg [var->dreg] = sreg;
14888                                                                 g_assert (lvregs_len < 1024);
14889                                                                 lvregs [lvregs_len ++] = var->dreg;
14890                                                         }
14891                                                 }
14892
14893                                                 sregs [srcindex] = sreg;
14894                                                 //mono_inst_set_src_registers (ins, sregs);
14895
14896 #if SIZEOF_REGISTER != 8
14897                                                 if (regtype == 'l') {
14898                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14899                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14900                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14901                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14902                                                         use_ins = load_ins;
14903                                                 }
14904                                                 else
14905 #endif
14906                                                 {
14907 #if SIZEOF_REGISTER == 4
14908                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14909 #endif
14910                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14911                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14912                                                         use_ins = load_ins;
14913                                                 }
14914                                         }
14915
14916                                         if (var->dreg < orig_next_vreg) {
14917                                                 live_range_end [var->dreg] = use_ins;
14918                                                 live_range_end_bb [var->dreg] = bb;
14919                                         }
14920
14921                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14922                                                 MonoInst *tmp;
14923
14924                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14925                                                 tmp->inst_c1 = var->dreg;
14926                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14927                                         }
14928                                 }
14929                         }
14930                         mono_inst_set_src_registers (ins, sregs);
14931
14932                         if (dest_has_lvreg) {
14933                                 g_assert (ins->dreg != -1);
14934                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14935                                 g_assert (lvregs_len < 1024);
14936                                 lvregs [lvregs_len ++] = prev_dreg;
14937                                 dest_has_lvreg = FALSE;
14938                         }
14939
14940                         if (store) {
14941                                 tmp_reg = ins->dreg;
14942                                 ins->dreg = ins->sreg2;
14943                                 ins->sreg2 = tmp_reg;
14944                         }
14945
14946                         if (MONO_IS_CALL (ins)) {
14947                                 /* Clear vreg_to_lvreg array */
14948                                 for (i = 0; i < lvregs_len; i++)
14949                                         vreg_to_lvreg [lvregs [i]] = 0;
14950                                 lvregs_len = 0;
14951                         } else if (ins->opcode == OP_NOP) {
14952                                 ins->dreg = -1;
14953                                 MONO_INST_NULLIFY_SREGS (ins);
14954                         }
14955
14956                         if (cfg->verbose_level > 2)
14957                                 mono_print_ins_index (1, ins);
14958                 }
14959
14960                 /* Extend the live range based on the liveness info */
14961                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14962                         for (i = 0; i < cfg->num_varinfo; i ++) {
14963                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14964
14965                                 if (vreg_is_volatile (cfg, vi->vreg))
14966                                         /* The liveness info is incomplete */
14967                                         continue;
14968
14969                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14970                                         /* Live from at least the first ins of this bb */
14971                                         live_range_start [vi->vreg] = bb->code;
14972                                         live_range_start_bb [vi->vreg] = bb;
14973                                 }
14974
14975                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14976                                         /* Live at least until the last ins of this bb */
14977                                         live_range_end [vi->vreg] = bb->last_ins;
14978                                         live_range_end_bb [vi->vreg] = bb;
14979                                 }
14980                         }
14981                 }
14982         }
14983
14984         /*
14985          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14986          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14987          */
14988         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14989                 for (i = 0; i < cfg->num_varinfo; ++i) {
14990                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14991                         MonoInst *ins;
14992
14993                         if (live_range_start [vreg]) {
14994                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14995                                 ins->inst_c0 = i;
14996                                 ins->inst_c1 = vreg;
14997                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14998                         }
14999                         if (live_range_end [vreg]) {
15000                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15001                                 ins->inst_c0 = i;
15002                                 ins->inst_c1 = vreg;
15003                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15004                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15005                                 else
15006                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15007                         }
15008                 }
15009         }
15010
15011         if (cfg->gsharedvt_locals_var_ins) {
15012                 /* Nullify if unused */
15013                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15014                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15015         }
15016
15017         g_free (live_range_start);
15018         g_free (live_range_end);
15019         g_free (live_range_start_bb);
15020         g_free (live_range_end_bb);
15021 }
15022
15023 /**
15024  * FIXME:
15025  * - use 'iadd' instead of 'int_add'
15026  * - handling ovf opcodes: decompose in method_to_ir.
15027  * - unify iregs/fregs
15028  *   -> partly done, the missing parts are:
15029  *   - a more complete unification would involve unifying the hregs as well, so
15030  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15031  *     would no longer map to the machine hregs, so the code generators would need to
15032  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15033  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15034  *     fp/non-fp branches speeds it up by about 15%.
15035  * - use sext/zext opcodes instead of shifts
15036  * - add OP_ICALL
15037  * - get rid of TEMPLOADs if possible and use vregs instead
15038  * - clean up usage of OP_P/OP_ opcodes
15039  * - cleanup usage of DUMMY_USE
15040  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15041  *   stack
15042  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15043  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15044  * - make sure handle_stack_args () is called before the branch is emitted
15045  * - when the new IR is done, get rid of all unused stuff
15046  * - COMPARE/BEQ as separate instructions or unify them ?
15047  *   - keeping them separate allows specialized compare instructions like
15048  *     compare_imm, compare_membase
15049  *   - most back ends unify fp compare+branch, fp compare+ceq
15050  * - integrate mono_save_args into inline_method
15051  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15052  * - handle long shift opts on 32 bit platforms somehow: they require
15053  *   3 sregs (2 for arg1 and 1 for arg2)
15054  * - make byref a 'normal' type.
15055  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15056  *   variable if needed.
15057  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15058  *   like inline_method.
15059  * - remove inlining restrictions
15060  * - fix LNEG and enable cfold of INEG
15061  * - generalize x86 optimizations like ldelema as a peephole optimization
15062  * - add store_mem_imm for amd64
15063  * - optimize the loading of the interruption flag in the managed->native wrappers
15064  * - avoid special handling of OP_NOP in passes
15065  * - move code inserting instructions into one function/macro.
15066  * - try a coalescing phase after liveness analysis
15067  * - add float -> vreg conversion + local optimizations on !x86
15068  * - figure out how to handle decomposed branches during optimizations, ie.
15069  *   compare+branch, op_jump_table+op_br etc.
15070  * - promote RuntimeXHandles to vregs
15071  * - vtype cleanups:
15072  *   - add a NEW_VARLOADA_VREG macro
15073  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15074  *   accessing vtype fields.
15075  * - get rid of I8CONST on 64 bit platforms
15076  * - dealing with the increase in code size due to branches created during opcode
15077  *   decomposition:
15078  *   - use extended basic blocks
15079  *     - all parts of the JIT
15080  *     - handle_global_vregs () && local regalloc
15081  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15082  * - sources of increase in code size:
15083  *   - vtypes
15084  *   - long compares
15085  *   - isinst and castclass
15086  *   - lvregs not allocated to global registers even if used multiple times
15087  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15088  *   meaningful.
15089  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15090  * - add all micro optimizations from the old JIT
15091  * - put tree optimizations into the deadce pass
15092  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15093  *   specific function.
15094  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15095  *   fcompare + branchCC.
15096  * - create a helper function for allocating a stack slot, taking into account
15097  *   MONO_CFG_HAS_SPILLUP.
15098  * - merge r68207.
15099  * - merge the ia64 switch changes.
15100  * - optimize mono_regstate2_alloc_int/float.
15101  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15102  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15103  *   parts of the tree could be separated by other instructions, killing the tree
15104  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15105  *   instructions if the result of the load is used multiple times ?
15106  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15107  * - LAST MERGE: 108395.
15108  * - when returning vtypes in registers, generate IR and append it to the end of the
15109  *   last bb instead of doing it in the epilog.
15110  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15111  */
15112
15113 /*
15114
15115 NOTES
15116 -----
15117
15118 - When to decompose opcodes:
15119   - earlier: this makes some optimizations hard to implement, since the low level IR
15120   no longer contains the neccessary information. But it is easier to do.
15121   - later: harder to implement, enables more optimizations.
15122 - Branches inside bblocks:
15123   - created when decomposing complex opcodes.
15124     - branches to another bblock: harmless, but not tracked by the branch
15125       optimizations, so need to branch to a label at the start of the bblock.
15126     - branches to inside the same bblock: very problematic, trips up the local
15127       reg allocator. Can be fixed by spitting the current bblock, but that is a
15128       complex operation, since some local vregs can become global vregs etc.
15129 - Local/global vregs:
15130   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15131     local register allocator.
15132   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15133     structure, created by mono_create_var (). Assigned to hregs or the stack by
15134     the global register allocator.
15135 - When to do optimizations like alu->alu_imm:
15136   - earlier -> saves work later on since the IR will be smaller/simpler
15137   - later -> can work on more instructions
15138 - Handling of valuetypes:
15139   - When a vtype is pushed on the stack, a new temporary is created, an
15140     instruction computing its address (LDADDR) is emitted and pushed on
15141     the stack. Need to optimize cases when the vtype is used immediately as in
15142     argument passing, stloc etc.
15143 - Instead of the to_end stuff in the old JIT, simply call the function handling
15144   the values on the stack before emitting the last instruction of the bb.
15145 */
15146
15147 #endif /* DISABLE_JIT */