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 && !cfg->llvm_only)
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, int il_offset, 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, il_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], 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], 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_cleanup (&error);
5348                                         return FALSE;
5349                                 }
5350                         }
5351                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5352                         if (cfg->run_cctors && method->klass->has_cctor) {
5353                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5354                                 if (!method->klass->runtime_info)
5355                                         /* No vtable created yet */
5356                                         return FALSE;
5357                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5358                                 if (!vtable)
5359                                         return FALSE;
5360                                 /* This makes so that inline cannot trigger */
5361                                 /* .cctors: too many apps depend on them */
5362                                 /* running with a specific order... */
5363                                 if (! vtable->initialized)
5364                                         return FALSE;
5365                                 MonoError error;
5366                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5367                                         mono_error_cleanup (&error);
5368                                         return FALSE;
5369                                 }
5370                         }
5371                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5372                         if (!method->klass->runtime_info)
5373                                 /* No vtable created yet */
5374                                 return FALSE;
5375                         vtable = mono_class_vtable (cfg->domain, method->klass);
5376                         if (!vtable)
5377                                 return FALSE;
5378                         if (!vtable->initialized)
5379                                 return FALSE;
5380                 }
5381         } else {
5382                 /*
5383                  * If we're compiling for shared code
5384                  * the cctor will need to be run at aot method load time, for example,
5385                  * or at the end of the compilation of the inlining method.
5386                  */
5387                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5388                         return FALSE;
5389         }
5390
5391 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5392         if (mono_arch_is_soft_float ()) {
5393                 /* FIXME: */
5394                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5395                         return FALSE;
5396                 for (i = 0; i < sig->param_count; ++i)
5397                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5398                                 return FALSE;
5399         }
5400 #endif
5401
5402         if (g_list_find (cfg->dont_inline, method))
5403                 return FALSE;
5404
5405         return TRUE;
5406 }
5407
5408 static gboolean
5409 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5410 {
5411         if (!cfg->compile_aot) {
5412                 g_assert (vtable);
5413                 if (vtable->initialized)
5414                         return FALSE;
5415         }
5416
5417         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5418                 if (cfg->method == method)
5419                         return FALSE;
5420         }
5421
5422         if (!mono_class_needs_cctor_run (klass, method))
5423                 return FALSE;
5424
5425         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5426                 /* The initialization is already done before the method is called */
5427                 return FALSE;
5428
5429         return TRUE;
5430 }
5431
5432 static MonoInst*
5433 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5434 {
5435         MonoInst *ins;
5436         guint32 size;
5437         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5438         int context_used;
5439
5440         if (mini_is_gsharedvt_variable_klass (klass)) {
5441                 size = -1;
5442         } else {
5443                 mono_class_init (klass);
5444                 size = mono_class_array_element_size (klass);
5445         }
5446
5447         mult_reg = alloc_preg (cfg);
5448         array_reg = arr->dreg;
5449         index_reg = index->dreg;
5450
5451 #if SIZEOF_REGISTER == 8
5452         /* The array reg is 64 bits but the index reg is only 32 */
5453         if (COMPILE_LLVM (cfg)) {
5454                 /* Not needed */
5455                 index2_reg = index_reg;
5456         } else {
5457                 index2_reg = alloc_preg (cfg);
5458                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5459         }
5460 #else
5461         if (index->type == STACK_I8) {
5462                 index2_reg = alloc_preg (cfg);
5463                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5464         } else {
5465                 index2_reg = index_reg;
5466         }
5467 #endif
5468
5469         if (bcheck)
5470                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5471
5472 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5473         if (size == 1 || size == 2 || size == 4 || size == 8) {
5474                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5475
5476                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5477                 ins->klass = mono_class_get_element_class (klass);
5478                 ins->type = STACK_MP;
5479
5480                 return ins;
5481         }
5482 #endif
5483
5484         add_reg = alloc_ireg_mp (cfg);
5485
5486         if (size == -1) {
5487                 MonoInst *rgctx_ins;
5488
5489                 /* gsharedvt */
5490                 g_assert (cfg->gshared);
5491                 context_used = mini_class_check_context_used (cfg, klass);
5492                 g_assert (context_used);
5493                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5494                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5495         } else {
5496                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5497         }
5498         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5499         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5500         ins->klass = mono_class_get_element_class (klass);
5501         ins->type = STACK_MP;
5502         MONO_ADD_INS (cfg->cbb, ins);
5503
5504         return ins;
5505 }
5506
5507 static MonoInst*
5508 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5509 {
5510         int bounds_reg = alloc_preg (cfg);
5511         int add_reg = alloc_ireg_mp (cfg);
5512         int mult_reg = alloc_preg (cfg);
5513         int mult2_reg = alloc_preg (cfg);
5514         int low1_reg = alloc_preg (cfg);
5515         int low2_reg = alloc_preg (cfg);
5516         int high1_reg = alloc_preg (cfg);
5517         int high2_reg = alloc_preg (cfg);
5518         int realidx1_reg = alloc_preg (cfg);
5519         int realidx2_reg = alloc_preg (cfg);
5520         int sum_reg = alloc_preg (cfg);
5521         int index1, index2, tmpreg;
5522         MonoInst *ins;
5523         guint32 size;
5524
5525         mono_class_init (klass);
5526         size = mono_class_array_element_size (klass);
5527
5528         index1 = index_ins1->dreg;
5529         index2 = index_ins2->dreg;
5530
5531 #if SIZEOF_REGISTER == 8
5532         /* The array reg is 64 bits but the index reg is only 32 */
5533         if (COMPILE_LLVM (cfg)) {
5534                 /* Not needed */
5535         } else {
5536                 tmpreg = alloc_preg (cfg);
5537                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5538                 index1 = tmpreg;
5539                 tmpreg = alloc_preg (cfg);
5540                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5541                 index2 = tmpreg;
5542         }
5543 #else
5544         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5545         tmpreg = -1;
5546 #endif
5547
5548         /* range checking */
5549         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5550                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5551
5552         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5553                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5554         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5555         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5556                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5557         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5558         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5559
5560         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5561                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5562         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5563         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5564                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5565         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5566         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5567
5568         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5569         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5570         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5571         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5572         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5573
5574         ins->type = STACK_MP;
5575         ins->klass = klass;
5576         MONO_ADD_INS (cfg->cbb, ins);
5577
5578         return ins;
5579 }
5580
5581 static MonoInst*
5582 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5583 {
5584         int rank;
5585         MonoInst *addr;
5586         MonoMethod *addr_method;
5587         int element_size;
5588         MonoClass *eclass = cmethod->klass->element_class;
5589
5590         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5591
5592         if (rank == 1)
5593                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5594
5595         /* emit_ldelema_2 depends on OP_LMUL */
5596         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5597                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5598         }
5599
5600         if (mini_is_gsharedvt_variable_klass (eclass))
5601                 element_size = 0;
5602         else
5603                 element_size = mono_class_array_element_size (eclass);
5604         addr_method = mono_marshal_get_array_address (rank, element_size);
5605         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5606
5607         return addr;
5608 }
5609
5610 static MonoBreakPolicy
5611 always_insert_breakpoint (MonoMethod *method)
5612 {
5613         return MONO_BREAK_POLICY_ALWAYS;
5614 }
5615
5616 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5617
5618 /**
5619  * mono_set_break_policy:
5620  * policy_callback: the new callback function
5621  *
5622  * Allow embedders to decide wherther to actually obey breakpoint instructions
5623  * (both break IL instructions and Debugger.Break () method calls), for example
5624  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5625  * untrusted or semi-trusted code.
5626  *
5627  * @policy_callback will be called every time a break point instruction needs to
5628  * be inserted with the method argument being the method that calls Debugger.Break()
5629  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5630  * if it wants the breakpoint to not be effective in the given method.
5631  * #MONO_BREAK_POLICY_ALWAYS is the default.
5632  */
5633 void
5634 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5635 {
5636         if (policy_callback)
5637                 break_policy_func = policy_callback;
5638         else
5639                 break_policy_func = always_insert_breakpoint;
5640 }
5641
5642 static gboolean
5643 should_insert_brekpoint (MonoMethod *method) {
5644         switch (break_policy_func (method)) {
5645         case MONO_BREAK_POLICY_ALWAYS:
5646                 return TRUE;
5647         case MONO_BREAK_POLICY_NEVER:
5648                 return FALSE;
5649         case MONO_BREAK_POLICY_ON_DBG:
5650                 g_warning ("mdb no longer supported");
5651                 return FALSE;
5652         default:
5653                 g_warning ("Incorrect value returned from break policy callback");
5654                 return FALSE;
5655         }
5656 }
5657
5658 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5659 static MonoInst*
5660 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5661 {
5662         MonoInst *addr, *store, *load;
5663         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5664
5665         /* the bounds check is already done by the callers */
5666         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5667         if (is_set) {
5668                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5669                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5670                 if (mini_type_is_reference (fsig->params [2]))
5671                         emit_write_barrier (cfg, addr, load);
5672         } else {
5673                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5674                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5675         }
5676         return store;
5677 }
5678
5679
5680 static gboolean
5681 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5682 {
5683         return mini_type_is_reference (&klass->byval_arg);
5684 }
5685
5686 static MonoInst*
5687 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5688 {
5689         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5690                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5691                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5692                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5693                 MonoInst *iargs [3];
5694
5695                 if (!helper->slot)
5696                         mono_class_setup_vtable (obj_array);
5697                 g_assert (helper->slot);
5698
5699                 if (sp [0]->type != STACK_OBJ)
5700                         return NULL;
5701                 if (sp [2]->type != STACK_OBJ)
5702                         return NULL;
5703
5704                 iargs [2] = sp [2];
5705                 iargs [1] = sp [1];
5706                 iargs [0] = sp [0];
5707
5708                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5709         } else {
5710                 MonoInst *ins;
5711
5712                 if (mini_is_gsharedvt_variable_klass (klass)) {
5713                         MonoInst *addr;
5714
5715                         // FIXME-VT: OP_ICONST optimization
5716                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5717                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5718                         ins->opcode = OP_STOREV_MEMBASE;
5719                 } else if (sp [1]->opcode == OP_ICONST) {
5720                         int array_reg = sp [0]->dreg;
5721                         int index_reg = sp [1]->dreg;
5722                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5723
5724                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5725                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5726
5727                         if (safety_checks)
5728                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5729                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5730                 } else {
5731                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5732                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5733                         if (generic_class_is_reference_type (cfg, klass))
5734                                 emit_write_barrier (cfg, addr, sp [2]);
5735                 }
5736                 return ins;
5737         }
5738 }
5739
5740 static MonoInst*
5741 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5742 {
5743         MonoClass *eklass;
5744
5745         if (is_set)
5746                 eklass = mono_class_from_mono_type (fsig->params [2]);
5747         else
5748                 eklass = mono_class_from_mono_type (fsig->ret);
5749
5750         if (is_set) {
5751                 return emit_array_store (cfg, eklass, args, FALSE);
5752         } else {
5753                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5754                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5755                 return ins;
5756         }
5757 }
5758
5759 static gboolean
5760 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5761 {
5762         uint32_t align;
5763         int param_size, return_size;
5764
5765         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5766         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5767
5768         if (cfg->verbose_level > 3)
5769                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5770
5771         //Don't allow mixing reference types with value types
5772         if (param_klass->valuetype != return_klass->valuetype) {
5773                 if (cfg->verbose_level > 3)
5774                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5775                 return FALSE;
5776         }
5777
5778         if (!param_klass->valuetype) {
5779                 if (cfg->verbose_level > 3)
5780                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5781                 return TRUE;
5782         }
5783
5784         //That are blitable
5785         if (param_klass->has_references || return_klass->has_references)
5786                 return FALSE;
5787
5788         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5789         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5790                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5791                         if (cfg->verbose_level > 3)
5792                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5793                 return FALSE;
5794         }
5795
5796         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5797                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5798                 if (cfg->verbose_level > 3)
5799                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5800                 return FALSE;
5801         }
5802
5803         param_size = mono_class_value_size (param_klass, &align);
5804         return_size = mono_class_value_size (return_klass, &align);
5805
5806         //We can do it if sizes match
5807         if (param_size == return_size) {
5808                 if (cfg->verbose_level > 3)
5809                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5810                 return TRUE;
5811         }
5812
5813         //No simple way to handle struct if sizes don't match
5814         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5815                 if (cfg->verbose_level > 3)
5816                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5817                 return FALSE;
5818         }
5819
5820         /*
5821          * Same reg size category.
5822          * A quick note on why we don't require widening here.
5823          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5824          *
5825          * Since the source value comes from a function argument, the JIT will already have
5826          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5827          */
5828         if (param_size <= 4 && return_size <= 4) {
5829                 if (cfg->verbose_level > 3)
5830                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5831                 return TRUE;
5832         }
5833
5834         return FALSE;
5835 }
5836
5837 static MonoInst*
5838 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5839 {
5840         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5841         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5842
5843         if (mini_is_gsharedvt_variable_type (fsig->ret))
5844                 return NULL;
5845
5846         //Valuetypes that are semantically equivalent or numbers than can be widened to
5847         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5848                 return args [0];
5849
5850         //Arrays of valuetypes that are semantically equivalent
5851         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5852                 return args [0];
5853
5854         return NULL;
5855 }
5856
5857 static MonoInst*
5858 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5859 {
5860 #ifdef MONO_ARCH_SIMD_INTRINSICS
5861         MonoInst *ins = NULL;
5862
5863         if (cfg->opt & MONO_OPT_SIMD) {
5864                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5865                 if (ins)
5866                         return ins;
5867         }
5868 #endif
5869
5870         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5871 }
5872
5873 static MonoInst*
5874 emit_memory_barrier (MonoCompile *cfg, int kind)
5875 {
5876         MonoInst *ins = NULL;
5877         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5878         MONO_ADD_INS (cfg->cbb, ins);
5879         ins->backend.memory_barrier_kind = kind;
5880
5881         return ins;
5882 }
5883
5884 static MonoInst*
5885 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5886 {
5887         MonoInst *ins = NULL;
5888         int opcode = 0;
5889
5890         /* The LLVM backend supports these intrinsics */
5891         if (cmethod->klass == mono_defaults.math_class) {
5892                 if (strcmp (cmethod->name, "Sin") == 0) {
5893                         opcode = OP_SIN;
5894                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5895                         opcode = OP_COS;
5896                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5897                         opcode = OP_SQRT;
5898                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5899                         opcode = OP_ABS;
5900                 }
5901
5902                 if (opcode && fsig->param_count == 1) {
5903                         MONO_INST_NEW (cfg, ins, opcode);
5904                         ins->type = STACK_R8;
5905                         ins->dreg = mono_alloc_freg (cfg);
5906                         ins->sreg1 = args [0]->dreg;
5907                         MONO_ADD_INS (cfg->cbb, ins);
5908                 }
5909
5910                 opcode = 0;
5911                 if (cfg->opt & MONO_OPT_CMOV) {
5912                         if (strcmp (cmethod->name, "Min") == 0) {
5913                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5914                                         opcode = OP_IMIN;
5915                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5916                                         opcode = OP_IMIN_UN;
5917                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5918                                         opcode = OP_LMIN;
5919                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5920                                         opcode = OP_LMIN_UN;
5921                         } else if (strcmp (cmethod->name, "Max") == 0) {
5922                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5923                                         opcode = OP_IMAX;
5924                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5925                                         opcode = OP_IMAX_UN;
5926                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5927                                         opcode = OP_LMAX;
5928                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5929                                         opcode = OP_LMAX_UN;
5930                         }
5931                 }
5932
5933                 if (opcode && fsig->param_count == 2) {
5934                         MONO_INST_NEW (cfg, ins, opcode);
5935                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5936                         ins->dreg = mono_alloc_ireg (cfg);
5937                         ins->sreg1 = args [0]->dreg;
5938                         ins->sreg2 = args [1]->dreg;
5939                         MONO_ADD_INS (cfg->cbb, ins);
5940                 }
5941         }
5942
5943         return ins;
5944 }
5945
5946 static MonoInst*
5947 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5948 {
5949         if (cmethod->klass == mono_defaults.array_class) {
5950                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5951                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5952                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5953                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5954                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5955                         return emit_array_unsafe_mov (cfg, fsig, args);
5956         }
5957
5958         return NULL;
5959 }
5960
5961 static MonoInst*
5962 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5963 {
5964         MonoInst *ins = NULL;
5965
5966          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5967
5968         if (cmethod->klass == mono_defaults.string_class) {
5969                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5970                         int dreg = alloc_ireg (cfg);
5971                         int index_reg = alloc_preg (cfg);
5972                         int add_reg = alloc_preg (cfg);
5973
5974 #if SIZEOF_REGISTER == 8
5975                         if (COMPILE_LLVM (cfg)) {
5976                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5977                         } else {
5978                                 /* The array reg is 64 bits but the index reg is only 32 */
5979                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5980                         }
5981 #else
5982                         index_reg = args [1]->dreg;
5983 #endif
5984                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5985
5986 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5987                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5988                         add_reg = ins->dreg;
5989                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5990                                                                    add_reg, 0);
5991 #else
5992                         int mult_reg = alloc_preg (cfg);
5993                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5994                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5995                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5996                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5997 #endif
5998                         type_from_op (cfg, ins, NULL, NULL);
5999                         return ins;
6000                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6001                         int dreg = alloc_ireg (cfg);
6002                         /* Decompose later to allow more optimizations */
6003                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
6004                         ins->type = STACK_I4;
6005                         ins->flags |= MONO_INST_FAULT;
6006                         cfg->cbb->has_array_access = TRUE;
6007                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6008
6009                         return ins;
6010                 } else
6011                         return NULL;
6012         } else if (cmethod->klass == mono_defaults.object_class) {
6013                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6014                         int dreg = alloc_ireg_ref (cfg);
6015                         int vt_reg = alloc_preg (cfg);
6016                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6017                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6018                         type_from_op (cfg, ins, NULL, NULL);
6019
6020                         return ins;
6021                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6022                         int dreg = alloc_ireg (cfg);
6023                         int t1 = alloc_ireg (cfg);
6024
6025                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6026                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6027                         ins->type = STACK_I4;
6028
6029                         return ins;
6030                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6031                         MONO_INST_NEW (cfg, ins, OP_NOP);
6032                         MONO_ADD_INS (cfg->cbb, ins);
6033                         return ins;
6034                 } else
6035                         return NULL;
6036         } else if (cmethod->klass == mono_defaults.array_class) {
6037                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6038                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6039                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6040                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6041
6042 #ifndef MONO_BIG_ARRAYS
6043                 /*
6044                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6045                  * Array methods.
6046                  */
6047                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6048                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6049                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6050                         int dreg = alloc_ireg (cfg);
6051                         int bounds_reg = alloc_ireg_mp (cfg);
6052                         MonoBasicBlock *end_bb, *szarray_bb;
6053                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6054
6055                         NEW_BBLOCK (cfg, end_bb);
6056                         NEW_BBLOCK (cfg, szarray_bb);
6057
6058                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6059                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6060                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6061                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6062                         /* Non-szarray case */
6063                         if (get_length)
6064                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6065                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6066                         else
6067                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6068                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6069                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6070                         MONO_START_BB (cfg, szarray_bb);
6071                         /* Szarray case */
6072                         if (get_length)
6073                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6074                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6075                         else
6076                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6077                         MONO_START_BB (cfg, end_bb);
6078
6079                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6080                         ins->type = STACK_I4;
6081
6082                         return ins;
6083                 }
6084 #endif
6085
6086                 if (cmethod->name [0] != 'g')
6087                         return NULL;
6088
6089                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6090                         int dreg = alloc_ireg (cfg);
6091                         int vtable_reg = alloc_preg (cfg);
6092                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6093                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6094                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6095                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6096                         type_from_op (cfg, ins, NULL, NULL);
6097
6098                         return ins;
6099                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6100                         int dreg = alloc_ireg (cfg);
6101
6102                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6103                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6104                         type_from_op (cfg, ins, NULL, NULL);
6105
6106                         return ins;
6107                 } else
6108                         return NULL;
6109         } else if (cmethod->klass == runtime_helpers_class) {
6110                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6111                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6112                         return ins;
6113                 } else
6114                         return NULL;
6115         } else if (cmethod->klass == mono_defaults.monitor_class) {
6116                 gboolean is_enter = FALSE;
6117
6118                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6119                         is_enter = TRUE;
6120
6121                 if (is_enter) {
6122                         /*
6123                          * To make async stack traces work, icalls which can block should have a wrapper.
6124                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6125                          */
6126                         MonoBasicBlock *end_bb;
6127
6128                         NEW_BBLOCK (cfg, end_bb);
6129
6130                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter_fast, args);
6131                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6132                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6133                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter, args);
6134                         MONO_START_BB (cfg, end_bb);
6135                         return ins;
6136                 }
6137         } else if (cmethod->klass == mono_defaults.thread_class) {
6138                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6139                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6140                         MONO_ADD_INS (cfg->cbb, ins);
6141                         return ins;
6142                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6143                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6144                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6145                         guint32 opcode = 0;
6146                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6147
6148                         if (fsig->params [0]->type == MONO_TYPE_I1)
6149                                 opcode = OP_LOADI1_MEMBASE;
6150                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6151                                 opcode = OP_LOADU1_MEMBASE;
6152                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6153                                 opcode = OP_LOADI2_MEMBASE;
6154                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6155                                 opcode = OP_LOADU2_MEMBASE;
6156                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6157                                 opcode = OP_LOADI4_MEMBASE;
6158                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6159                                 opcode = OP_LOADU4_MEMBASE;
6160                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6161                                 opcode = OP_LOADI8_MEMBASE;
6162                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6163                                 opcode = OP_LOADR4_MEMBASE;
6164                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6165                                 opcode = OP_LOADR8_MEMBASE;
6166                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6167                                 opcode = OP_LOAD_MEMBASE;
6168
6169                         if (opcode) {
6170                                 MONO_INST_NEW (cfg, ins, opcode);
6171                                 ins->inst_basereg = args [0]->dreg;
6172                                 ins->inst_offset = 0;
6173                                 MONO_ADD_INS (cfg->cbb, ins);
6174
6175                                 switch (fsig->params [0]->type) {
6176                                 case MONO_TYPE_I1:
6177                                 case MONO_TYPE_U1:
6178                                 case MONO_TYPE_I2:
6179                                 case MONO_TYPE_U2:
6180                                 case MONO_TYPE_I4:
6181                                 case MONO_TYPE_U4:
6182                                         ins->dreg = mono_alloc_ireg (cfg);
6183                                         ins->type = STACK_I4;
6184                                         break;
6185                                 case MONO_TYPE_I8:
6186                                 case MONO_TYPE_U8:
6187                                         ins->dreg = mono_alloc_lreg (cfg);
6188                                         ins->type = STACK_I8;
6189                                         break;
6190                                 case MONO_TYPE_I:
6191                                 case MONO_TYPE_U:
6192                                         ins->dreg = mono_alloc_ireg (cfg);
6193 #if SIZEOF_REGISTER == 8
6194                                         ins->type = STACK_I8;
6195 #else
6196                                         ins->type = STACK_I4;
6197 #endif
6198                                         break;
6199                                 case MONO_TYPE_R4:
6200                                 case MONO_TYPE_R8:
6201                                         ins->dreg = mono_alloc_freg (cfg);
6202                                         ins->type = STACK_R8;
6203                                         break;
6204                                 default:
6205                                         g_assert (mini_type_is_reference (fsig->params [0]));
6206                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6207                                         ins->type = STACK_OBJ;
6208                                         break;
6209                                 }
6210
6211                                 if (opcode == OP_LOADI8_MEMBASE)
6212                                         ins = mono_decompose_opcode (cfg, ins);
6213
6214                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6215
6216                                 return ins;
6217                         }
6218                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6219                         guint32 opcode = 0;
6220                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6221
6222                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6223                                 opcode = OP_STOREI1_MEMBASE_REG;
6224                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6225                                 opcode = OP_STOREI2_MEMBASE_REG;
6226                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6227                                 opcode = OP_STOREI4_MEMBASE_REG;
6228                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6229                                 opcode = OP_STOREI8_MEMBASE_REG;
6230                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6231                                 opcode = OP_STORER4_MEMBASE_REG;
6232                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6233                                 opcode = OP_STORER8_MEMBASE_REG;
6234                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6235                                 opcode = OP_STORE_MEMBASE_REG;
6236
6237                         if (opcode) {
6238                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6239
6240                                 MONO_INST_NEW (cfg, ins, opcode);
6241                                 ins->sreg1 = args [1]->dreg;
6242                                 ins->inst_destbasereg = args [0]->dreg;
6243                                 ins->inst_offset = 0;
6244                                 MONO_ADD_INS (cfg->cbb, ins);
6245
6246                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6247                                         ins = mono_decompose_opcode (cfg, ins);
6248
6249                                 return ins;
6250                         }
6251                 }
6252         } else if (cmethod->klass->image == mono_defaults.corlib &&
6253                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6254                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6255                 ins = NULL;
6256
6257 #if SIZEOF_REGISTER == 8
6258                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6259                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6260                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6261                                 ins->dreg = mono_alloc_preg (cfg);
6262                                 ins->sreg1 = args [0]->dreg;
6263                                 ins->type = STACK_I8;
6264                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6265                                 MONO_ADD_INS (cfg->cbb, ins);
6266                         } else {
6267                                 MonoInst *load_ins;
6268
6269                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6270
6271                                 /* 64 bit reads are already atomic */
6272                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6273                                 load_ins->dreg = mono_alloc_preg (cfg);
6274                                 load_ins->inst_basereg = args [0]->dreg;
6275                                 load_ins->inst_offset = 0;
6276                                 load_ins->type = STACK_I8;
6277                                 MONO_ADD_INS (cfg->cbb, load_ins);
6278
6279                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6280
6281                                 ins = load_ins;
6282                         }
6283                 }
6284 #endif
6285
6286                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6287                         MonoInst *ins_iconst;
6288                         guint32 opcode = 0;
6289
6290                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6291                                 opcode = OP_ATOMIC_ADD_I4;
6292                                 cfg->has_atomic_add_i4 = TRUE;
6293                         }
6294 #if SIZEOF_REGISTER == 8
6295                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6296                                 opcode = OP_ATOMIC_ADD_I8;
6297 #endif
6298                         if (opcode) {
6299                                 if (!mono_arch_opcode_supported (opcode))
6300                                         return NULL;
6301                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6302                                 ins_iconst->inst_c0 = 1;
6303                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6304                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6305
6306                                 MONO_INST_NEW (cfg, ins, opcode);
6307                                 ins->dreg = mono_alloc_ireg (cfg);
6308                                 ins->inst_basereg = args [0]->dreg;
6309                                 ins->inst_offset = 0;
6310                                 ins->sreg2 = ins_iconst->dreg;
6311                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6312                                 MONO_ADD_INS (cfg->cbb, ins);
6313                         }
6314                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6315                         MonoInst *ins_iconst;
6316                         guint32 opcode = 0;
6317
6318                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6319                                 opcode = OP_ATOMIC_ADD_I4;
6320                                 cfg->has_atomic_add_i4 = TRUE;
6321                         }
6322 #if SIZEOF_REGISTER == 8
6323                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6324                                 opcode = OP_ATOMIC_ADD_I8;
6325 #endif
6326                         if (opcode) {
6327                                 if (!mono_arch_opcode_supported (opcode))
6328                                         return NULL;
6329                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6330                                 ins_iconst->inst_c0 = -1;
6331                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6332                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6333
6334                                 MONO_INST_NEW (cfg, ins, opcode);
6335                                 ins->dreg = mono_alloc_ireg (cfg);
6336                                 ins->inst_basereg = args [0]->dreg;
6337                                 ins->inst_offset = 0;
6338                                 ins->sreg2 = ins_iconst->dreg;
6339                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6340                                 MONO_ADD_INS (cfg->cbb, ins);
6341                         }
6342                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6343                         guint32 opcode = 0;
6344
6345                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6346                                 opcode = OP_ATOMIC_ADD_I4;
6347                                 cfg->has_atomic_add_i4 = TRUE;
6348                         }
6349 #if SIZEOF_REGISTER == 8
6350                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6351                                 opcode = OP_ATOMIC_ADD_I8;
6352 #endif
6353                         if (opcode) {
6354                                 if (!mono_arch_opcode_supported (opcode))
6355                                         return NULL;
6356                                 MONO_INST_NEW (cfg, ins, opcode);
6357                                 ins->dreg = mono_alloc_ireg (cfg);
6358                                 ins->inst_basereg = args [0]->dreg;
6359                                 ins->inst_offset = 0;
6360                                 ins->sreg2 = args [1]->dreg;
6361                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6362                                 MONO_ADD_INS (cfg->cbb, ins);
6363                         }
6364                 }
6365                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6366                         MonoInst *f2i = NULL, *i2f;
6367                         guint32 opcode, f2i_opcode, i2f_opcode;
6368                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6369                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6370
6371                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6372                             fsig->params [0]->type == MONO_TYPE_R4) {
6373                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6374                                 f2i_opcode = OP_MOVE_F_TO_I4;
6375                                 i2f_opcode = OP_MOVE_I4_TO_F;
6376                                 cfg->has_atomic_exchange_i4 = TRUE;
6377                         }
6378 #if SIZEOF_REGISTER == 8
6379                         else if (is_ref ||
6380                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6381                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6382                                  fsig->params [0]->type == MONO_TYPE_I) {
6383                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6384                                 f2i_opcode = OP_MOVE_F_TO_I8;
6385                                 i2f_opcode = OP_MOVE_I8_TO_F;
6386                         }
6387 #else
6388                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6389                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6390                                 cfg->has_atomic_exchange_i4 = TRUE;
6391                         }
6392 #endif
6393                         else
6394                                 return NULL;
6395
6396                         if (!mono_arch_opcode_supported (opcode))
6397                                 return NULL;
6398
6399                         if (is_float) {
6400                                 /* TODO: Decompose these opcodes instead of bailing here. */
6401                                 if (COMPILE_SOFT_FLOAT (cfg))
6402                                         return NULL;
6403
6404                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6405                                 f2i->dreg = mono_alloc_ireg (cfg);
6406                                 f2i->sreg1 = args [1]->dreg;
6407                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6408                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6409                                 MONO_ADD_INS (cfg->cbb, f2i);
6410                         }
6411
6412                         MONO_INST_NEW (cfg, ins, opcode);
6413                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6414                         ins->inst_basereg = args [0]->dreg;
6415                         ins->inst_offset = 0;
6416                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6417                         MONO_ADD_INS (cfg->cbb, ins);
6418
6419                         switch (fsig->params [0]->type) {
6420                         case MONO_TYPE_I4:
6421                                 ins->type = STACK_I4;
6422                                 break;
6423                         case MONO_TYPE_I8:
6424                                 ins->type = STACK_I8;
6425                                 break;
6426                         case MONO_TYPE_I:
6427 #if SIZEOF_REGISTER == 8
6428                                 ins->type = STACK_I8;
6429 #else
6430                                 ins->type = STACK_I4;
6431 #endif
6432                                 break;
6433                         case MONO_TYPE_R4:
6434                         case MONO_TYPE_R8:
6435                                 ins->type = STACK_R8;
6436                                 break;
6437                         default:
6438                                 g_assert (mini_type_is_reference (fsig->params [0]));
6439                                 ins->type = STACK_OBJ;
6440                                 break;
6441                         }
6442
6443                         if (is_float) {
6444                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6445                                 i2f->dreg = mono_alloc_freg (cfg);
6446                                 i2f->sreg1 = ins->dreg;
6447                                 i2f->type = STACK_R8;
6448                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6449                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6450                                 MONO_ADD_INS (cfg->cbb, i2f);
6451
6452                                 ins = i2f;
6453                         }
6454
6455                         if (cfg->gen_write_barriers && is_ref)
6456                                 emit_write_barrier (cfg, args [0], args [1]);
6457                 }
6458                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6459                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6460                         guint32 opcode, f2i_opcode, i2f_opcode;
6461                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6462                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6463
6464                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6465                             fsig->params [1]->type == MONO_TYPE_R4) {
6466                                 opcode = OP_ATOMIC_CAS_I4;
6467                                 f2i_opcode = OP_MOVE_F_TO_I4;
6468                                 i2f_opcode = OP_MOVE_I4_TO_F;
6469                                 cfg->has_atomic_cas_i4 = TRUE;
6470                         }
6471 #if SIZEOF_REGISTER == 8
6472                         else if (is_ref ||
6473                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6474                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6475                                  fsig->params [1]->type == MONO_TYPE_I) {
6476                                 opcode = OP_ATOMIC_CAS_I8;
6477                                 f2i_opcode = OP_MOVE_F_TO_I8;
6478                                 i2f_opcode = OP_MOVE_I8_TO_F;
6479                         }
6480 #else
6481                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6482                                 opcode = OP_ATOMIC_CAS_I4;
6483                                 cfg->has_atomic_cas_i4 = TRUE;
6484                         }
6485 #endif
6486                         else
6487                                 return NULL;
6488
6489                         if (!mono_arch_opcode_supported (opcode))
6490                                 return NULL;
6491
6492                         if (is_float) {
6493                                 /* TODO: Decompose these opcodes instead of bailing here. */
6494                                 if (COMPILE_SOFT_FLOAT (cfg))
6495                                         return NULL;
6496
6497                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6498                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6499                                 f2i_new->sreg1 = args [1]->dreg;
6500                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6501                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6502                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6503
6504                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6505                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6506                                 f2i_cmp->sreg1 = args [2]->dreg;
6507                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6508                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6509                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6510                         }
6511
6512                         MONO_INST_NEW (cfg, ins, opcode);
6513                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6514                         ins->sreg1 = args [0]->dreg;
6515                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6516                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6517                         MONO_ADD_INS (cfg->cbb, ins);
6518
6519                         switch (fsig->params [1]->type) {
6520                         case MONO_TYPE_I4:
6521                                 ins->type = STACK_I4;
6522                                 break;
6523                         case MONO_TYPE_I8:
6524                                 ins->type = STACK_I8;
6525                                 break;
6526                         case MONO_TYPE_I:
6527 #if SIZEOF_REGISTER == 8
6528                                 ins->type = STACK_I8;
6529 #else
6530                                 ins->type = STACK_I4;
6531 #endif
6532                                 break;
6533                         case MONO_TYPE_R4:
6534                                 ins->type = cfg->r4_stack_type;
6535                                 break;
6536                         case MONO_TYPE_R8:
6537                                 ins->type = STACK_R8;
6538                                 break;
6539                         default:
6540                                 g_assert (mini_type_is_reference (fsig->params [1]));
6541                                 ins->type = STACK_OBJ;
6542                                 break;
6543                         }
6544
6545                         if (is_float) {
6546                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6547                                 i2f->dreg = mono_alloc_freg (cfg);
6548                                 i2f->sreg1 = ins->dreg;
6549                                 i2f->type = STACK_R8;
6550                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6551                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6552                                 MONO_ADD_INS (cfg->cbb, i2f);
6553
6554                                 ins = i2f;
6555                         }
6556
6557                         if (cfg->gen_write_barriers && is_ref)
6558                                 emit_write_barrier (cfg, args [0], args [1]);
6559                 }
6560                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6561                          fsig->params [1]->type == MONO_TYPE_I4) {
6562                         MonoInst *cmp, *ceq;
6563
6564                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6565                                 return NULL;
6566
6567                         /* int32 r = CAS (location, value, comparand); */
6568                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6569                         ins->dreg = alloc_ireg (cfg);
6570                         ins->sreg1 = args [0]->dreg;
6571                         ins->sreg2 = args [1]->dreg;
6572                         ins->sreg3 = args [2]->dreg;
6573                         ins->type = STACK_I4;
6574                         MONO_ADD_INS (cfg->cbb, ins);
6575
6576                         /* bool result = r == comparand; */
6577                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6578                         cmp->sreg1 = ins->dreg;
6579                         cmp->sreg2 = args [2]->dreg;
6580                         cmp->type = STACK_I4;
6581                         MONO_ADD_INS (cfg->cbb, cmp);
6582
6583                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6584                         ceq->dreg = alloc_ireg (cfg);
6585                         ceq->type = STACK_I4;
6586                         MONO_ADD_INS (cfg->cbb, ceq);
6587
6588                         /* *success = result; */
6589                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6590
6591                         cfg->has_atomic_cas_i4 = TRUE;
6592                 }
6593                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6594                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6595
6596                 if (ins)
6597                         return ins;
6598         } else if (cmethod->klass->image == mono_defaults.corlib &&
6599                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6600                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6601                 ins = NULL;
6602
6603                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6604                         guint32 opcode = 0;
6605                         MonoType *t = fsig->params [0];
6606                         gboolean is_ref;
6607                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6608
6609                         g_assert (t->byref);
6610                         /* t is a byref type, so the reference check is more complicated */
6611                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6612                         if (t->type == MONO_TYPE_I1)
6613                                 opcode = OP_ATOMIC_LOAD_I1;
6614                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6615                                 opcode = OP_ATOMIC_LOAD_U1;
6616                         else if (t->type == MONO_TYPE_I2)
6617                                 opcode = OP_ATOMIC_LOAD_I2;
6618                         else if (t->type == MONO_TYPE_U2)
6619                                 opcode = OP_ATOMIC_LOAD_U2;
6620                         else if (t->type == MONO_TYPE_I4)
6621                                 opcode = OP_ATOMIC_LOAD_I4;
6622                         else if (t->type == MONO_TYPE_U4)
6623                                 opcode = OP_ATOMIC_LOAD_U4;
6624                         else if (t->type == MONO_TYPE_R4)
6625                                 opcode = OP_ATOMIC_LOAD_R4;
6626                         else if (t->type == MONO_TYPE_R8)
6627                                 opcode = OP_ATOMIC_LOAD_R8;
6628 #if SIZEOF_REGISTER == 8
6629                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6630                                 opcode = OP_ATOMIC_LOAD_I8;
6631                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6632                                 opcode = OP_ATOMIC_LOAD_U8;
6633 #else
6634                         else if (t->type == MONO_TYPE_I)
6635                                 opcode = OP_ATOMIC_LOAD_I4;
6636                         else if (is_ref || t->type == MONO_TYPE_U)
6637                                 opcode = OP_ATOMIC_LOAD_U4;
6638 #endif
6639
6640                         if (opcode) {
6641                                 if (!mono_arch_opcode_supported (opcode))
6642                                         return NULL;
6643
6644                                 MONO_INST_NEW (cfg, ins, opcode);
6645                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6646                                 ins->sreg1 = args [0]->dreg;
6647                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6648                                 MONO_ADD_INS (cfg->cbb, ins);
6649
6650                                 switch (t->type) {
6651                                 case MONO_TYPE_BOOLEAN:
6652                                 case MONO_TYPE_I1:
6653                                 case MONO_TYPE_U1:
6654                                 case MONO_TYPE_I2:
6655                                 case MONO_TYPE_U2:
6656                                 case MONO_TYPE_I4:
6657                                 case MONO_TYPE_U4:
6658                                         ins->type = STACK_I4;
6659                                         break;
6660                                 case MONO_TYPE_I8:
6661                                 case MONO_TYPE_U8:
6662                                         ins->type = STACK_I8;
6663                                         break;
6664                                 case MONO_TYPE_I:
6665                                 case MONO_TYPE_U:
6666 #if SIZEOF_REGISTER == 8
6667                                         ins->type = STACK_I8;
6668 #else
6669                                         ins->type = STACK_I4;
6670 #endif
6671                                         break;
6672                                 case MONO_TYPE_R4:
6673                                         ins->type = cfg->r4_stack_type;
6674                                         break;
6675                                 case MONO_TYPE_R8:
6676                                         ins->type = STACK_R8;
6677                                         break;
6678                                 default:
6679                                         g_assert (is_ref);
6680                                         ins->type = STACK_OBJ;
6681                                         break;
6682                                 }
6683                         }
6684                 }
6685
6686                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6687                         guint32 opcode = 0;
6688                         MonoType *t = fsig->params [0];
6689                         gboolean is_ref;
6690
6691                         g_assert (t->byref);
6692                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6693                         if (t->type == MONO_TYPE_I1)
6694                                 opcode = OP_ATOMIC_STORE_I1;
6695                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6696                                 opcode = OP_ATOMIC_STORE_U1;
6697                         else if (t->type == MONO_TYPE_I2)
6698                                 opcode = OP_ATOMIC_STORE_I2;
6699                         else if (t->type == MONO_TYPE_U2)
6700                                 opcode = OP_ATOMIC_STORE_U2;
6701                         else if (t->type == MONO_TYPE_I4)
6702                                 opcode = OP_ATOMIC_STORE_I4;
6703                         else if (t->type == MONO_TYPE_U4)
6704                                 opcode = OP_ATOMIC_STORE_U4;
6705                         else if (t->type == MONO_TYPE_R4)
6706                                 opcode = OP_ATOMIC_STORE_R4;
6707                         else if (t->type == MONO_TYPE_R8)
6708                                 opcode = OP_ATOMIC_STORE_R8;
6709 #if SIZEOF_REGISTER == 8
6710                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6711                                 opcode = OP_ATOMIC_STORE_I8;
6712                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6713                                 opcode = OP_ATOMIC_STORE_U8;
6714 #else
6715                         else if (t->type == MONO_TYPE_I)
6716                                 opcode = OP_ATOMIC_STORE_I4;
6717                         else if (is_ref || t->type == MONO_TYPE_U)
6718                                 opcode = OP_ATOMIC_STORE_U4;
6719 #endif
6720
6721                         if (opcode) {
6722                                 if (!mono_arch_opcode_supported (opcode))
6723                                         return NULL;
6724
6725                                 MONO_INST_NEW (cfg, ins, opcode);
6726                                 ins->dreg = args [0]->dreg;
6727                                 ins->sreg1 = args [1]->dreg;
6728                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6729                                 MONO_ADD_INS (cfg->cbb, ins);
6730
6731                                 if (cfg->gen_write_barriers && is_ref)
6732                                         emit_write_barrier (cfg, args [0], args [1]);
6733                         }
6734                 }
6735
6736                 if (ins)
6737                         return ins;
6738         } else if (cmethod->klass->image == mono_defaults.corlib &&
6739                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6740                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6741                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6742                         if (should_insert_brekpoint (cfg->method)) {
6743                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6744                         } else {
6745                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6746                                 MONO_ADD_INS (cfg->cbb, ins);
6747                         }
6748                         return ins;
6749                 }
6750         } else if (cmethod->klass->image == mono_defaults.corlib &&
6751                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6752                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6753                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6754 #ifdef TARGET_WIN32
6755                         EMIT_NEW_ICONST (cfg, ins, 1);
6756 #else
6757                         EMIT_NEW_ICONST (cfg, ins, 0);
6758 #endif
6759                 }
6760         } else if (cmethod->klass->image == mono_defaults.corlib &&
6761                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6762                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6763                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6764                         /* No stack walks are currently available, so implement this as an intrinsic */
6765                         MonoInst *assembly_ins;
6766
6767                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6768                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6769                         return ins;
6770                 }
6771         } else if (cmethod->klass->image == mono_defaults.corlib &&
6772                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6773                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6774                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6775                         /* No stack walks are currently available, so implement this as an intrinsic */
6776                         MonoInst *method_ins;
6777                         MonoMethod *declaring = cfg->method;
6778
6779                         /* This returns the declaring generic method */
6780                         if (declaring->is_inflated)
6781                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6782                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6783                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6784                         cfg->no_inline = TRUE;
6785                         if (cfg->method != cfg->current_method)
6786                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6787                         return ins;
6788                 }
6789         } else if (cmethod->klass == mono_defaults.math_class) {
6790                 /*
6791                  * There is general branchless code for Min/Max, but it does not work for
6792                  * all inputs:
6793                  * http://everything2.com/?node_id=1051618
6794                  */
6795         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6796                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6797                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6798                                 !strcmp (cmethod->klass->name, "Selector")) ||
6799                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6800                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6801                                 !strcmp (cmethod->klass->name, "Selector"))
6802                            ) {
6803                 if (cfg->backend->have_objc_get_selector &&
6804                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6805                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6806                     cfg->compile_aot && !cfg->llvm_only) {
6807                         MonoInst *pi;
6808                         MonoJumpInfoToken *ji;
6809                         MonoString *s;
6810
6811                         // FIXME: llvmonly
6812
6813                         cfg->exception_message = g_strdup ("GetHandle");
6814                         cfg->disable_llvm = TRUE;
6815
6816                         if (args [0]->opcode == OP_GOT_ENTRY) {
6817                                 pi = (MonoInst *)args [0]->inst_p1;
6818                                 g_assert (pi->opcode == OP_PATCH_INFO);
6819                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6820                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6821                         } else {
6822                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6823                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6824                         }
6825
6826                         NULLIFY_INS (args [0]);
6827
6828                         // FIXME: Ugly
6829                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6830                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6831                         ins->dreg = mono_alloc_ireg (cfg);
6832                         // FIXME: Leaks
6833                         ins->inst_p0 = mono_string_to_utf8 (s);
6834                         MONO_ADD_INS (cfg->cbb, ins);
6835                         return ins;
6836                 }
6837         }
6838
6839 #ifdef MONO_ARCH_SIMD_INTRINSICS
6840         if (cfg->opt & MONO_OPT_SIMD) {
6841                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6842                 if (ins)
6843                         return ins;
6844         }
6845 #endif
6846
6847         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6848         if (ins)
6849                 return ins;
6850
6851         if (COMPILE_LLVM (cfg)) {
6852                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6853                 if (ins)
6854                         return ins;
6855         }
6856
6857         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6858 }
6859
6860 /*
6861  * This entry point could be used later for arbitrary method
6862  * redirection.
6863  */
6864 inline static MonoInst*
6865 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6866                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6867 {
6868         if (method->klass == mono_defaults.string_class) {
6869                 /* managed string allocation support */
6870                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6871                         MonoInst *iargs [2];
6872                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6873                         MonoMethod *managed_alloc = NULL;
6874
6875                         g_assert (vtable); /*Should not fail since it System.String*/
6876 #ifndef MONO_CROSS_COMPILE
6877                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6878 #endif
6879                         if (!managed_alloc)
6880                                 return NULL;
6881                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6882                         iargs [1] = args [0];
6883                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6884                 }
6885         }
6886         return NULL;
6887 }
6888
6889 static void
6890 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6891 {
6892         MonoInst *store, *temp;
6893         int i;
6894
6895         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6896                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6897
6898                 /*
6899                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6900                  * would be different than the MonoInst's used to represent arguments, and
6901                  * the ldelema implementation can't deal with that.
6902                  * Solution: When ldelema is used on an inline argument, create a var for
6903                  * it, emit ldelema on that var, and emit the saving code below in
6904                  * inline_method () if needed.
6905                  */
6906                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6907                 cfg->args [i] = temp;
6908                 /* This uses cfg->args [i] which is set by the preceeding line */
6909                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6910                 store->cil_code = sp [0]->cil_code;
6911                 sp++;
6912         }
6913 }
6914
6915 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6916 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6917
6918 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6919 static gboolean
6920 check_inline_called_method_name_limit (MonoMethod *called_method)
6921 {
6922         int strncmp_result;
6923         static const char *limit = NULL;
6924
6925         if (limit == NULL) {
6926                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6927
6928                 if (limit_string != NULL)
6929                         limit = limit_string;
6930                 else
6931                         limit = "";
6932         }
6933
6934         if (limit [0] != '\0') {
6935                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6936
6937                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6938                 g_free (called_method_name);
6939
6940                 //return (strncmp_result <= 0);
6941                 return (strncmp_result == 0);
6942         } else {
6943                 return TRUE;
6944         }
6945 }
6946 #endif
6947
6948 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6949 static gboolean
6950 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6951 {
6952         int strncmp_result;
6953         static const char *limit = NULL;
6954
6955         if (limit == NULL) {
6956                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6957                 if (limit_string != NULL) {
6958                         limit = limit_string;
6959                 } else {
6960                         limit = "";
6961                 }
6962         }
6963
6964         if (limit [0] != '\0') {
6965                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6966
6967                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6968                 g_free (caller_method_name);
6969
6970                 //return (strncmp_result <= 0);
6971                 return (strncmp_result == 0);
6972         } else {
6973                 return TRUE;
6974         }
6975 }
6976 #endif
6977
6978 static void
6979 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6980 {
6981         static double r8_0 = 0.0;
6982         static float r4_0 = 0.0;
6983         MonoInst *ins;
6984         int t;
6985
6986         rtype = mini_get_underlying_type (rtype);
6987         t = rtype->type;
6988
6989         if (rtype->byref) {
6990                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6991         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6992                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6993         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6994                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6995         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6996                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6997                 ins->type = STACK_R4;
6998                 ins->inst_p0 = (void*)&r4_0;
6999                 ins->dreg = dreg;
7000                 MONO_ADD_INS (cfg->cbb, ins);
7001         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7002                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7003                 ins->type = STACK_R8;
7004                 ins->inst_p0 = (void*)&r8_0;
7005                 ins->dreg = dreg;
7006                 MONO_ADD_INS (cfg->cbb, ins);
7007         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7008                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7009                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7010         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7011                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7012         } else {
7013                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7014         }
7015 }
7016
7017 static void
7018 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7019 {
7020         int t;
7021
7022         rtype = mini_get_underlying_type (rtype);
7023         t = rtype->type;
7024
7025         if (rtype->byref) {
7026                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7027         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7028                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7029         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7030                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7031         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7032                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7033         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7034                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7035         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7036                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7037                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7038         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7039                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7040         } else {
7041                 emit_init_rvar (cfg, dreg, rtype);
7042         }
7043 }
7044
7045 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7046 static void
7047 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7048 {
7049         MonoInst *var = cfg->locals [local];
7050         if (COMPILE_SOFT_FLOAT (cfg)) {
7051                 MonoInst *store;
7052                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7053                 emit_init_rvar (cfg, reg, type);
7054                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7055         } else {
7056                 if (init)
7057                         emit_init_rvar (cfg, var->dreg, type);
7058                 else
7059                         emit_dummy_init_rvar (cfg, var->dreg, type);
7060         }
7061 }
7062
7063 /*
7064  * inline_method:
7065  *
7066  *   Return the cost of inlining CMETHOD.
7067  */
7068 static int
7069 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7070                            guchar *ip, guint real_offset, gboolean inline_always)
7071 {
7072         MonoError error;
7073         MonoInst *ins, *rvar = NULL;
7074         MonoMethodHeader *cheader;
7075         MonoBasicBlock *ebblock, *sbblock;
7076         int i, costs;
7077         MonoMethod *prev_inlined_method;
7078         MonoInst **prev_locals, **prev_args;
7079         MonoType **prev_arg_types;
7080         guint prev_real_offset;
7081         GHashTable *prev_cbb_hash;
7082         MonoBasicBlock **prev_cil_offset_to_bb;
7083         MonoBasicBlock *prev_cbb;
7084         unsigned char* prev_cil_start;
7085         guint32 prev_cil_offset_to_bb_len;
7086         MonoMethod *prev_current_method;
7087         MonoGenericContext *prev_generic_context;
7088         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7089
7090         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7091
7092 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7093         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7094                 return 0;
7095 #endif
7096 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7097         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7098                 return 0;
7099 #endif
7100
7101         if (!fsig)
7102                 fsig = mono_method_signature (cmethod);
7103
7104         if (cfg->verbose_level > 2)
7105                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7106
7107         if (!cmethod->inline_info) {
7108                 cfg->stat_inlineable_methods++;
7109                 cmethod->inline_info = 1;
7110         }
7111
7112         /* allocate local variables */
7113         cheader = mono_method_get_header_checked (cmethod, &error);
7114         if (!cheader) {
7115                 if (inline_always) {
7116                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7117                         mono_error_move (&cfg->error, &error);
7118                 } else {
7119                         mono_error_cleanup (&error);
7120                 }
7121                 return 0;
7122         }
7123
7124         /*Must verify before creating locals as it can cause the JIT to assert.*/
7125         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7126                 mono_metadata_free_mh (cheader);
7127                 return 0;
7128         }
7129
7130         /* allocate space to store the return value */
7131         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7132                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7133         }
7134
7135         prev_locals = cfg->locals;
7136         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7137         for (i = 0; i < cheader->num_locals; ++i)
7138                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7139
7140         /* allocate start and end blocks */
7141         /* This is needed so if the inline is aborted, we can clean up */
7142         NEW_BBLOCK (cfg, sbblock);
7143         sbblock->real_offset = real_offset;
7144
7145         NEW_BBLOCK (cfg, ebblock);
7146         ebblock->block_num = cfg->num_bblocks++;
7147         ebblock->real_offset = real_offset;
7148
7149         prev_args = cfg->args;
7150         prev_arg_types = cfg->arg_types;
7151         prev_inlined_method = cfg->inlined_method;
7152         cfg->inlined_method = cmethod;
7153         cfg->ret_var_set = FALSE;
7154         cfg->inline_depth ++;
7155         prev_real_offset = cfg->real_offset;
7156         prev_cbb_hash = cfg->cbb_hash;
7157         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7158         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7159         prev_cil_start = cfg->cil_start;
7160         prev_cbb = cfg->cbb;
7161         prev_current_method = cfg->current_method;
7162         prev_generic_context = cfg->generic_context;
7163         prev_ret_var_set = cfg->ret_var_set;
7164         prev_disable_inline = cfg->disable_inline;
7165
7166         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7167                 virtual_ = TRUE;
7168
7169         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7170
7171         ret_var_set = cfg->ret_var_set;
7172
7173         cfg->inlined_method = prev_inlined_method;
7174         cfg->real_offset = prev_real_offset;
7175         cfg->cbb_hash = prev_cbb_hash;
7176         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7177         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7178         cfg->cil_start = prev_cil_start;
7179         cfg->locals = prev_locals;
7180         cfg->args = prev_args;
7181         cfg->arg_types = prev_arg_types;
7182         cfg->current_method = prev_current_method;
7183         cfg->generic_context = prev_generic_context;
7184         cfg->ret_var_set = prev_ret_var_set;
7185         cfg->disable_inline = prev_disable_inline;
7186         cfg->inline_depth --;
7187
7188         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7189                 if (cfg->verbose_level > 2)
7190                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7191
7192                 cfg->stat_inlined_methods++;
7193
7194                 /* always add some code to avoid block split failures */
7195                 MONO_INST_NEW (cfg, ins, OP_NOP);
7196                 MONO_ADD_INS (prev_cbb, ins);
7197
7198                 prev_cbb->next_bb = sbblock;
7199                 link_bblock (cfg, prev_cbb, sbblock);
7200
7201                 /*
7202                  * Get rid of the begin and end bblocks if possible to aid local
7203                  * optimizations.
7204                  */
7205                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7206
7207                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7208                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7209
7210                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7211                         MonoBasicBlock *prev = ebblock->in_bb [0];
7212
7213                         if (prev->next_bb == ebblock) {
7214                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7215                                 cfg->cbb = prev;
7216                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7217                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7218                                         cfg->cbb = prev_cbb;
7219                                 }
7220                         } else {
7221                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7222                                 cfg->cbb = ebblock;
7223                         }
7224                 } else {
7225                         /*
7226                          * Its possible that the rvar is set in some prev bblock, but not in others.
7227                          * (#1835).
7228                          */
7229                         if (rvar) {
7230                                 MonoBasicBlock *bb;
7231
7232                                 for (i = 0; i < ebblock->in_count; ++i) {
7233                                         bb = ebblock->in_bb [i];
7234
7235                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7236                                                 cfg->cbb = bb;
7237
7238                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7239                                         }
7240                                 }
7241                         }
7242
7243                         cfg->cbb = ebblock;
7244                 }
7245
7246                 if (rvar) {
7247                         /*
7248                          * If the inlined method contains only a throw, then the ret var is not
7249                          * set, so set it to a dummy value.
7250                          */
7251                         if (!ret_var_set)
7252                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7253
7254                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7255                         *sp++ = ins;
7256                 }
7257                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7258                 return costs + 1;
7259         } else {
7260                 if (cfg->verbose_level > 2)
7261                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7262                 cfg->exception_type = MONO_EXCEPTION_NONE;
7263
7264                 /* This gets rid of the newly added bblocks */
7265                 cfg->cbb = prev_cbb;
7266         }
7267         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7268         return 0;
7269 }
7270
7271 /*
7272  * Some of these comments may well be out-of-date.
7273  * Design decisions: we do a single pass over the IL code (and we do bblock
7274  * splitting/merging in the few cases when it's required: a back jump to an IL
7275  * address that was not already seen as bblock starting point).
7276  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7277  * Complex operations are decomposed in simpler ones right away. We need to let the
7278  * arch-specific code peek and poke inside this process somehow (except when the
7279  * optimizations can take advantage of the full semantic info of coarse opcodes).
7280  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7281  * MonoInst->opcode initially is the IL opcode or some simplification of that
7282  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7283  * opcode with value bigger than OP_LAST.
7284  * At this point the IR can be handed over to an interpreter, a dumb code generator
7285  * or to the optimizing code generator that will translate it to SSA form.
7286  *
7287  * Profiling directed optimizations.
7288  * We may compile by default with few or no optimizations and instrument the code
7289  * or the user may indicate what methods to optimize the most either in a config file
7290  * or through repeated runs where the compiler applies offline the optimizations to
7291  * each method and then decides if it was worth it.
7292  */
7293
7294 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7295 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7296 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7297 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7298 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7299 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7300 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7301 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7302
7303 /* offset from br.s -> br like opcodes */
7304 #define BIG_BRANCH_OFFSET 13
7305
7306 static gboolean
7307 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7308 {
7309         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7310
7311         return b == NULL || b == bb;
7312 }
7313
7314 static int
7315 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7316 {
7317         unsigned char *ip = start;
7318         unsigned char *target;
7319         int i;
7320         guint cli_addr;
7321         MonoBasicBlock *bblock;
7322         const MonoOpcode *opcode;
7323
7324         while (ip < end) {
7325                 cli_addr = ip - start;
7326                 i = mono_opcode_value ((const guint8 **)&ip, end);
7327                 if (i < 0)
7328                         UNVERIFIED;
7329                 opcode = &mono_opcodes [i];
7330                 switch (opcode->argument) {
7331                 case MonoInlineNone:
7332                         ip++;
7333                         break;
7334                 case MonoInlineString:
7335                 case MonoInlineType:
7336                 case MonoInlineField:
7337                 case MonoInlineMethod:
7338                 case MonoInlineTok:
7339                 case MonoInlineSig:
7340                 case MonoShortInlineR:
7341                 case MonoInlineI:
7342                         ip += 5;
7343                         break;
7344                 case MonoInlineVar:
7345                         ip += 3;
7346                         break;
7347                 case MonoShortInlineVar:
7348                 case MonoShortInlineI:
7349                         ip += 2;
7350                         break;
7351                 case MonoShortInlineBrTarget:
7352                         target = start + cli_addr + 2 + (signed char)ip [1];
7353                         GET_BBLOCK (cfg, bblock, target);
7354                         ip += 2;
7355                         if (ip < end)
7356                                 GET_BBLOCK (cfg, bblock, ip);
7357                         break;
7358                 case MonoInlineBrTarget:
7359                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7360                         GET_BBLOCK (cfg, bblock, target);
7361                         ip += 5;
7362                         if (ip < end)
7363                                 GET_BBLOCK (cfg, bblock, ip);
7364                         break;
7365                 case MonoInlineSwitch: {
7366                         guint32 n = read32 (ip + 1);
7367                         guint32 j;
7368                         ip += 5;
7369                         cli_addr += 5 + 4 * n;
7370                         target = start + cli_addr;
7371                         GET_BBLOCK (cfg, bblock, target);
7372
7373                         for (j = 0; j < n; ++j) {
7374                                 target = start + cli_addr + (gint32)read32 (ip);
7375                                 GET_BBLOCK (cfg, bblock, target);
7376                                 ip += 4;
7377                         }
7378                         break;
7379                 }
7380                 case MonoInlineR:
7381                 case MonoInlineI8:
7382                         ip += 9;
7383                         break;
7384                 default:
7385                         g_assert_not_reached ();
7386                 }
7387
7388                 if (i == CEE_THROW) {
7389                         unsigned char *bb_start = ip - 1;
7390
7391                         /* Find the start of the bblock containing the throw */
7392                         bblock = NULL;
7393                         while ((bb_start >= start) && !bblock) {
7394                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7395                                 bb_start --;
7396                         }
7397                         if (bblock)
7398                                 bblock->out_of_line = 1;
7399                 }
7400         }
7401         return 0;
7402 unverified:
7403 exception_exit:
7404         *pos = ip;
7405         return 1;
7406 }
7407
7408 static inline MonoMethod *
7409 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7410 {
7411         MonoMethod *method;
7412
7413         mono_error_init (error);
7414
7415         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7416                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7417                 if (context) {
7418                         method = mono_class_inflate_generic_method_checked (method, context, error);
7419                 }
7420         } else {
7421                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7422         }
7423
7424         return method;
7425 }
7426
7427 static inline MonoMethod *
7428 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7429 {
7430         MonoError error;
7431         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7432
7433         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7434                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7435                 method = NULL;
7436         }
7437
7438         if (!method && !cfg)
7439                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7440
7441         return method;
7442 }
7443
7444 static inline MonoClass*
7445 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7446 {
7447         MonoError error;
7448         MonoClass *klass;
7449
7450         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7451                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7452                 if (context) {
7453                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7454                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7455                 }
7456         } else {
7457                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7458                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7459         }
7460         if (klass)
7461                 mono_class_init (klass);
7462         return klass;
7463 }
7464
7465 static inline MonoMethodSignature*
7466 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7467 {
7468         MonoMethodSignature *fsig;
7469
7470         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7471                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7472         } else {
7473                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7474         }
7475         if (context) {
7476                 MonoError error;
7477                 fsig = mono_inflate_generic_signature(fsig, context, &error);
7478                 // FIXME:
7479                 g_assert(mono_error_ok(&error));
7480         }
7481         return fsig;
7482 }
7483
7484 static MonoMethod*
7485 throw_exception (void)
7486 {
7487         static MonoMethod *method = NULL;
7488
7489         if (!method) {
7490                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7491                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7492         }
7493         g_assert (method);
7494         return method;
7495 }
7496
7497 static void
7498 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7499 {
7500         MonoMethod *thrower = throw_exception ();
7501         MonoInst *args [1];
7502
7503         EMIT_NEW_PCONST (cfg, args [0], ex);
7504         mono_emit_method_call (cfg, thrower, args, NULL);
7505 }
7506
7507 /*
7508  * Return the original method is a wrapper is specified. We can only access
7509  * the custom attributes from the original method.
7510  */
7511 static MonoMethod*
7512 get_original_method (MonoMethod *method)
7513 {
7514         if (method->wrapper_type == MONO_WRAPPER_NONE)
7515                 return method;
7516
7517         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7518         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7519                 return NULL;
7520
7521         /* in other cases we need to find the original method */
7522         return mono_marshal_method_from_wrapper (method);
7523 }
7524
7525 static void
7526 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7527 {
7528         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7529         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7530         if (ex)
7531                 emit_throw_exception (cfg, ex);
7532 }
7533
7534 static void
7535 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7536 {
7537         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7538         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7539         if (ex)
7540                 emit_throw_exception (cfg, ex);
7541 }
7542
7543 /*
7544  * Check that the IL instructions at ip are the array initialization
7545  * sequence and return the pointer to the data and the size.
7546  */
7547 static const char*
7548 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7549 {
7550         /*
7551          * newarr[System.Int32]
7552          * dup
7553          * ldtoken field valuetype ...
7554          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7555          */
7556         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7557                 MonoError error;
7558                 guint32 token = read32 (ip + 7);
7559                 guint32 field_token = read32 (ip + 2);
7560                 guint32 field_index = field_token & 0xffffff;
7561                 guint32 rva;
7562                 const char *data_ptr;
7563                 int size = 0;
7564                 MonoMethod *cmethod;
7565                 MonoClass *dummy_class;
7566                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7567                 int dummy_align;
7568
7569                 if (!field) {
7570                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7571                         return NULL;
7572                 }
7573
7574                 *out_field_token = field_token;
7575
7576                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7577                 if (!cmethod)
7578                         return NULL;
7579                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7580                         return NULL;
7581                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7582                 case MONO_TYPE_BOOLEAN:
7583                 case MONO_TYPE_I1:
7584                 case MONO_TYPE_U1:
7585                         size = 1; break;
7586                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7587 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7588                 case MONO_TYPE_CHAR:
7589                 case MONO_TYPE_I2:
7590                 case MONO_TYPE_U2:
7591                         size = 2; break;
7592                 case MONO_TYPE_I4:
7593                 case MONO_TYPE_U4:
7594                 case MONO_TYPE_R4:
7595                         size = 4; break;
7596                 case MONO_TYPE_R8:
7597                 case MONO_TYPE_I8:
7598                 case MONO_TYPE_U8:
7599                         size = 8; break;
7600 #endif
7601                 default:
7602                         return NULL;
7603                 }
7604                 size *= len;
7605                 if (size > mono_type_size (field->type, &dummy_align))
7606                     return NULL;
7607                 *out_size = size;
7608                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7609                 if (!image_is_dynamic (method->klass->image)) {
7610                         field_index = read32 (ip + 2) & 0xffffff;
7611                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7612                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7613                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7614                         /* for aot code we do the lookup on load */
7615                         if (aot && data_ptr)
7616                                 return (const char *)GUINT_TO_POINTER (rva);
7617                 } else {
7618                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7619                         g_assert (!aot);
7620                         data_ptr = mono_field_get_data (field);
7621                 }
7622                 return data_ptr;
7623         }
7624         return NULL;
7625 }
7626
7627 static void
7628 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7629 {
7630         MonoError error;
7631         char *method_fname = mono_method_full_name (method, TRUE);
7632         char *method_code;
7633         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7634
7635         if (!header) {
7636                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7637                 mono_error_cleanup (&error);
7638         } else if (header->code_size == 0)
7639                 method_code = g_strdup ("method body is empty.");
7640         else
7641                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7642         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7643         g_free (method_fname);
7644         g_free (method_code);
7645         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7646 }
7647
7648 static void
7649 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7650 {
7651         MonoInst *ins;
7652         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7653         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7654                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7655                 /* Optimize reg-reg moves away */
7656                 /*
7657                  * Can't optimize other opcodes, since sp[0] might point to
7658                  * the last ins of a decomposed opcode.
7659                  */
7660                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7661         } else {
7662                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7663         }
7664 }
7665
7666 /*
7667  * ldloca inhibits many optimizations so try to get rid of it in common
7668  * cases.
7669  */
7670 static inline unsigned char *
7671 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7672 {
7673         int local, token;
7674         MonoClass *klass;
7675         MonoType *type;
7676
7677         if (size == 1) {
7678                 local = ip [1];
7679                 ip += 2;
7680         } else {
7681                 local = read16 (ip + 2);
7682                 ip += 4;
7683         }
7684
7685         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7686                 /* From the INITOBJ case */
7687                 token = read32 (ip + 2);
7688                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7689                 CHECK_TYPELOAD (klass);
7690                 type = mini_get_underlying_type (&klass->byval_arg);
7691                 emit_init_local (cfg, local, type, TRUE);
7692                 return ip + 6;
7693         }
7694  exception_exit:
7695         return NULL;
7696 }
7697
7698 static MonoInst*
7699 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7700 {
7701         MonoInst *icall_args [16];
7702         MonoInst *call_target, *ins, *vtable_ins;
7703         int arg_reg, this_reg, vtable_reg;
7704         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7705         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7706         gboolean variant_iface = FALSE;
7707         guint32 slot;
7708         int offset;
7709
7710         /*
7711          * In llvm-only mode, vtables contain function descriptors instead of
7712          * method addresses/trampolines.
7713          */
7714         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7715
7716         if (is_iface)
7717                 slot = mono_method_get_imt_slot (cmethod);
7718         else
7719                 slot = mono_method_get_vtable_index (cmethod);
7720
7721         this_reg = sp [0]->dreg;
7722
7723         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7724                 variant_iface = TRUE;
7725
7726         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7727                 /*
7728                  * The simplest case, a normal virtual call.
7729                  */
7730                 int slot_reg = alloc_preg (cfg);
7731                 int addr_reg = alloc_preg (cfg);
7732                 int arg_reg = alloc_preg (cfg);
7733                 MonoBasicBlock *non_null_bb;
7734
7735                 vtable_reg = alloc_preg (cfg);
7736                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7737                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7738
7739                 /* Load the vtable slot, which contains a function descriptor. */
7740                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7741
7742                 NEW_BBLOCK (cfg, non_null_bb);
7743
7744                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7745                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7746                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7747
7748                 /* Slow path */
7749                 // FIXME: Make the wrapper use the preserveall cconv
7750                 // FIXME: Use one icall per slot for small slot numbers ?
7751                 icall_args [0] = vtable_ins;
7752                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7753                 /* Make the icall return the vtable slot value to save some code space */
7754                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7755                 ins->dreg = slot_reg;
7756                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7757
7758                 /* Fastpath */
7759                 MONO_START_BB (cfg, non_null_bb);
7760                 /* Load the address + arg from the vtable slot */
7761                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7762                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7763
7764                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7765         }
7766
7767         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7768                 /*
7769                  * A simple interface call
7770                  *
7771                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7772                  * The imt slot contains a function descriptor for a runtime function + arg.
7773                  */
7774                 int slot_reg = alloc_preg (cfg);
7775                 int addr_reg = alloc_preg (cfg);
7776                 int arg_reg = alloc_preg (cfg);
7777                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7778
7779                 vtable_reg = alloc_preg (cfg);
7780                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7781                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7782
7783                 /*
7784                  * The slot is already initialized when the vtable is created so there is no need
7785                  * to check it here.
7786                  */
7787
7788                 /* Load the imt slot, which contains a function descriptor. */
7789                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7790
7791                 /* Load the address + arg of the imt thunk from the imt slot */
7792                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7793                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7794                 /*
7795                  * IMT thunks in llvm-only mode are C functions which take an info argument
7796                  * plus the imt method and return the ftndesc to call.
7797                  */
7798                 icall_args [0] = thunk_arg_ins;
7799                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7800                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7801                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7802
7803                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7804         }
7805
7806         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7807                 /*
7808                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7809                  * dynamically extended as more instantiations are discovered.
7810                  * This handles generic virtual methods both on classes and interfaces.
7811                  */
7812                 int slot_reg = alloc_preg (cfg);
7813                 int addr_reg = alloc_preg (cfg);
7814                 int arg_reg = alloc_preg (cfg);
7815                 int ftndesc_reg = alloc_preg (cfg);
7816                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7817                 MonoBasicBlock *slowpath_bb, *end_bb;
7818
7819                 NEW_BBLOCK (cfg, slowpath_bb);
7820                 NEW_BBLOCK (cfg, end_bb);
7821
7822                 vtable_reg = alloc_preg (cfg);
7823                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7824                 if (is_iface)
7825                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7826                 else
7827                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7828
7829                 /* Load the slot, which contains a function descriptor. */
7830                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7831
7832                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7833                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7834                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7835                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7836
7837                 /* Fastpath */
7838                 /* Same as with iface calls */
7839                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7840                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7841                 icall_args [0] = thunk_arg_ins;
7842                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7843                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7844                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7845                 ftndesc_ins->dreg = ftndesc_reg;
7846                 /*
7847                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7848                  * they don't know about yet. Fall back to the slowpath in that case.
7849                  */
7850                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7851                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7852
7853                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7854
7855                 /* Slowpath */
7856                 MONO_START_BB (cfg, slowpath_bb);
7857                 icall_args [0] = vtable_ins;
7858                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7859                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7860                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7861                 if (is_iface)
7862                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7863                 else
7864                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7865                 ftndesc_ins->dreg = ftndesc_reg;
7866                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7867
7868                 /* Common case */
7869                 MONO_START_BB (cfg, end_bb);
7870                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7871         }
7872
7873         /*
7874          * Non-optimized cases
7875          */
7876         icall_args [0] = sp [0];
7877         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7878
7879         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7880                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7881
7882         arg_reg = alloc_preg (cfg);
7883         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7884         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7885
7886         g_assert (is_gsharedvt);
7887         if (is_iface)
7888                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7889         else
7890                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7891
7892         /*
7893          * Pass the extra argument even if the callee doesn't receive it, most
7894          * calling conventions allow this.
7895          */
7896         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7897 }
7898
7899 static gboolean
7900 is_exception_class (MonoClass *klass)
7901 {
7902         while (klass) {
7903                 if (klass == mono_defaults.exception_class)
7904                         return TRUE;
7905                 klass = klass->parent;
7906         }
7907         return FALSE;
7908 }
7909
7910 /*
7911  * is_jit_optimizer_disabled:
7912  *
7913  *   Determine whenever M's assembly has a DebuggableAttribute with the
7914  * IsJITOptimizerDisabled flag set.
7915  */
7916 static gboolean
7917 is_jit_optimizer_disabled (MonoMethod *m)
7918 {
7919         MonoError error;
7920         MonoAssembly *ass = m->klass->image->assembly;
7921         MonoCustomAttrInfo* attrs;
7922         MonoClass *klass;
7923         int i;
7924         gboolean val = FALSE;
7925
7926         g_assert (ass);
7927         if (ass->jit_optimizer_disabled_inited)
7928                 return ass->jit_optimizer_disabled;
7929
7930         klass = mono_class_try_get_debuggable_attribute_class ();
7931
7932         if (!klass) {
7933                 /* Linked away */
7934                 ass->jit_optimizer_disabled = FALSE;
7935                 mono_memory_barrier ();
7936                 ass->jit_optimizer_disabled_inited = TRUE;
7937                 return FALSE;
7938         }
7939
7940         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7941         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7942         if (attrs) {
7943                 for (i = 0; i < attrs->num_attrs; ++i) {
7944                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7945                         const gchar *p;
7946                         MonoMethodSignature *sig;
7947
7948                         if (!attr->ctor || attr->ctor->klass != klass)
7949                                 continue;
7950                         /* Decode the attribute. See reflection.c */
7951                         p = (const char*)attr->data;
7952                         g_assert (read16 (p) == 0x0001);
7953                         p += 2;
7954
7955                         // FIXME: Support named parameters
7956                         sig = mono_method_signature (attr->ctor);
7957                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7958                                 continue;
7959                         /* Two boolean arguments */
7960                         p ++;
7961                         val = *p;
7962                 }
7963                 mono_custom_attrs_free (attrs);
7964         }
7965
7966         ass->jit_optimizer_disabled = val;
7967         mono_memory_barrier ();
7968         ass->jit_optimizer_disabled_inited = TRUE;
7969
7970         return val;
7971 }
7972
7973 static gboolean
7974 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7975 {
7976         gboolean supported_tail_call;
7977         int i;
7978
7979         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7980
7981         for (i = 0; i < fsig->param_count; ++i) {
7982                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7983                         /* These can point to the current method's stack */
7984                         supported_tail_call = FALSE;
7985         }
7986         if (fsig->hasthis && cmethod->klass->valuetype)
7987                 /* this might point to the current method's stack */
7988                 supported_tail_call = FALSE;
7989         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7990                 supported_tail_call = FALSE;
7991         if (cfg->method->save_lmf)
7992                 supported_tail_call = FALSE;
7993         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7994                 supported_tail_call = FALSE;
7995         if (call_opcode != CEE_CALL)
7996                 supported_tail_call = FALSE;
7997
7998         /* Debugging support */
7999 #if 0
8000         if (supported_tail_call) {
8001                 if (!mono_debug_count ())
8002                         supported_tail_call = FALSE;
8003         }
8004 #endif
8005
8006         return supported_tail_call;
8007 }
8008
8009 /*
8010  * handle_ctor_call:
8011  *
8012  *   Handle calls made to ctors from NEWOBJ opcodes.
8013  */
8014 static void
8015 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8016                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8017 {
8018         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8019
8020         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8021                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8022                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8023                         mono_class_vtable (cfg->domain, cmethod->klass);
8024                         CHECK_TYPELOAD (cmethod->klass);
8025
8026                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8027                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8028                 } else {
8029                         if (context_used) {
8030                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8031                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8032                         } else {
8033                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8034
8035                                 CHECK_TYPELOAD (cmethod->klass);
8036                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8037                         }
8038                 }
8039         }
8040
8041         /* Avoid virtual calls to ctors if possible */
8042         if (mono_class_is_marshalbyref (cmethod->klass))
8043                 callvirt_this_arg = sp [0];
8044
8045         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8046                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8047                 CHECK_CFG_EXCEPTION;
8048         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8049                            mono_method_check_inlining (cfg, cmethod) &&
8050                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8051                 int costs;
8052
8053                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8054                         cfg->real_offset += 5;
8055
8056                         *inline_costs += costs - 5;
8057                 } else {
8058                         INLINE_FAILURE ("inline failure");
8059                         // FIXME-VT: Clean this up
8060                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8061                                 GSHAREDVT_FAILURE(*ip);
8062                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8063                 }
8064         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8065                 MonoInst *addr;
8066
8067                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8068
8069                 if (cfg->llvm_only) {
8070                         // FIXME: Avoid initializing vtable_arg
8071                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8072                 } else {
8073                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8074                 }
8075         } else if (context_used &&
8076                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8077                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8078                 MonoInst *cmethod_addr;
8079
8080                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8081
8082                 if (cfg->llvm_only) {
8083                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8084                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8085                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8086                 } else {
8087                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8088                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8089
8090                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8091                 }
8092         } else {
8093                 INLINE_FAILURE ("ctor call");
8094                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8095                                                                                   callvirt_this_arg, NULL, vtable_arg);
8096         }
8097  exception_exit:
8098         return;
8099 }
8100
8101 static void
8102 emit_setret (MonoCompile *cfg, MonoInst *val)
8103 {
8104         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8105         MonoInst *ins;
8106
8107         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8108                 MonoInst *ret_addr;
8109
8110                 if (!cfg->vret_addr) {
8111                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8112                 } else {
8113                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8114
8115                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8116                         ins->klass = mono_class_from_mono_type (ret_type);
8117                 }
8118         } else {
8119 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8120                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8121                         MonoInst *iargs [1];
8122                         MonoInst *conv;
8123
8124                         iargs [0] = val;
8125                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8126                         mono_arch_emit_setret (cfg, cfg->method, conv);
8127                 } else {
8128                         mono_arch_emit_setret (cfg, cfg->method, val);
8129                 }
8130 #else
8131                 mono_arch_emit_setret (cfg, cfg->method, val);
8132 #endif
8133         }
8134 }
8135
8136 /*
8137  * mono_method_to_ir:
8138  *
8139  *   Translate the .net IL into linear IR.
8140  */
8141 int
8142 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8143                    MonoInst *return_var, MonoInst **inline_args,
8144                    guint inline_offset, gboolean is_virtual_call)
8145 {
8146         MonoError error;
8147         MonoInst *ins, **sp, **stack_start;
8148         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8149         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8150         MonoMethod *cmethod, *method_definition;
8151         MonoInst **arg_array;
8152         MonoMethodHeader *header;
8153         MonoImage *image;
8154         guint32 token, ins_flag;
8155         MonoClass *klass;
8156         MonoClass *constrained_class = NULL;
8157         unsigned char *ip, *end, *target, *err_pos;
8158         MonoMethodSignature *sig;
8159         MonoGenericContext *generic_context = NULL;
8160         MonoGenericContainer *generic_container = NULL;
8161         MonoType **param_types;
8162         int i, n, start_new_bblock, dreg;
8163         int num_calls = 0, inline_costs = 0;
8164         int breakpoint_id = 0;
8165         guint num_args;
8166         GSList *class_inits = NULL;
8167         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8168         int context_used;
8169         gboolean init_locals, seq_points, skip_dead_blocks;
8170         gboolean sym_seq_points = FALSE;
8171         MonoDebugMethodInfo *minfo;
8172         MonoBitSet *seq_point_locs = NULL;
8173         MonoBitSet *seq_point_set_locs = NULL;
8174
8175         cfg->disable_inline = is_jit_optimizer_disabled (method);
8176
8177         /* serialization and xdomain stuff may need access to private fields and methods */
8178         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8179         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8180         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8181         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8182         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8183         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8184
8185         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8186         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8187         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8188         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8189         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8190
8191         image = method->klass->image;
8192         header = mono_method_get_header_checked (method, &cfg->error);
8193         if (!header) {
8194                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8195                 goto exception_exit;
8196         }
8197         generic_container = mono_method_get_generic_container (method);
8198         sig = mono_method_signature (method);
8199         num_args = sig->hasthis + sig->param_count;
8200         ip = (unsigned char*)header->code;
8201         cfg->cil_start = ip;
8202         end = ip + header->code_size;
8203         cfg->stat_cil_code_size += header->code_size;
8204
8205         seq_points = cfg->gen_seq_points && cfg->method == method;
8206
8207         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8208                 /* We could hit a seq point before attaching to the JIT (#8338) */
8209                 seq_points = FALSE;
8210         }
8211
8212         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8213                 minfo = mono_debug_lookup_method (method);
8214                 if (minfo) {
8215                         MonoSymSeqPoint *sps;
8216                         int i, n_il_offsets;
8217
8218                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8219                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8220                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8221                         sym_seq_points = TRUE;
8222                         for (i = 0; i < n_il_offsets; ++i) {
8223                                 if (sps [i].il_offset < header->code_size)
8224                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8225                         }
8226                         g_free (sps);
8227                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8228                         /* Methods without line number info like auto-generated property accessors */
8229                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8230                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8231                         sym_seq_points = TRUE;
8232                 }
8233         }
8234
8235         /*
8236          * Methods without init_locals set could cause asserts in various passes
8237          * (#497220). To work around this, we emit dummy initialization opcodes
8238          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8239          * on some platforms.
8240          */
8241         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8242                 init_locals = header->init_locals;
8243         else
8244                 init_locals = TRUE;
8245
8246         method_definition = method;
8247         while (method_definition->is_inflated) {
8248                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8249                 method_definition = imethod->declaring;
8250         }
8251
8252         /* SkipVerification is not allowed if core-clr is enabled */
8253         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8254                 dont_verify = TRUE;
8255                 dont_verify_stloc = TRUE;
8256         }
8257
8258         if (sig->is_inflated)
8259                 generic_context = mono_method_get_context (method);
8260         else if (generic_container)
8261                 generic_context = &generic_container->context;
8262         cfg->generic_context = generic_context;
8263
8264         if (!cfg->gshared)
8265                 g_assert (!sig->has_type_parameters);
8266
8267         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8268                 g_assert (method->is_inflated);
8269                 g_assert (mono_method_get_context (method)->method_inst);
8270         }
8271         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8272                 g_assert (sig->generic_param_count);
8273
8274         if (cfg->method == method) {
8275                 cfg->real_offset = 0;
8276         } else {
8277                 cfg->real_offset = inline_offset;
8278         }
8279
8280         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8281         cfg->cil_offset_to_bb_len = header->code_size;
8282
8283         cfg->current_method = method;
8284
8285         if (cfg->verbose_level > 2)
8286                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8287
8288         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8289         if (sig->hasthis)
8290                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8291         for (n = 0; n < sig->param_count; ++n)
8292                 param_types [n + sig->hasthis] = sig->params [n];
8293         cfg->arg_types = param_types;
8294
8295         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8296         if (cfg->method == method) {
8297
8298                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8299                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8300
8301                 /* ENTRY BLOCK */
8302                 NEW_BBLOCK (cfg, start_bblock);
8303                 cfg->bb_entry = start_bblock;
8304                 start_bblock->cil_code = NULL;
8305                 start_bblock->cil_length = 0;
8306
8307                 /* EXIT BLOCK */
8308                 NEW_BBLOCK (cfg, end_bblock);
8309                 cfg->bb_exit = end_bblock;
8310                 end_bblock->cil_code = NULL;
8311                 end_bblock->cil_length = 0;
8312                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8313                 g_assert (cfg->num_bblocks == 2);
8314
8315                 arg_array = cfg->args;
8316
8317                 if (header->num_clauses) {
8318                         cfg->spvars = g_hash_table_new (NULL, NULL);
8319                         cfg->exvars = g_hash_table_new (NULL, NULL);
8320                 }
8321                 /* handle exception clauses */
8322                 for (i = 0; i < header->num_clauses; ++i) {
8323                         MonoBasicBlock *try_bb;
8324                         MonoExceptionClause *clause = &header->clauses [i];
8325                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8326
8327                         try_bb->real_offset = clause->try_offset;
8328                         try_bb->try_start = TRUE;
8329                         try_bb->region = ((i + 1) << 8) | clause->flags;
8330                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8331                         tblock->real_offset = clause->handler_offset;
8332                         tblock->flags |= BB_EXCEPTION_HANDLER;
8333
8334                         /*
8335                          * Linking the try block with the EH block hinders inlining as we won't be able to
8336                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8337                          */
8338                         if (COMPILE_LLVM (cfg))
8339                                 link_bblock (cfg, try_bb, tblock);
8340
8341                         if (*(ip + clause->handler_offset) == CEE_POP)
8342                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8343
8344                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8345                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8346                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8347                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8348                                 MONO_ADD_INS (tblock, ins);
8349
8350                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8351                                         /* finally clauses already have a seq point */
8352                                         /* seq points for filter clauses are emitted below */
8353                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8354                                         MONO_ADD_INS (tblock, ins);
8355                                 }
8356
8357                                 /* todo: is a fault block unsafe to optimize? */
8358                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8359                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8360                         }
8361
8362                         /*printf ("clause try IL_%04x to IL_%04x handler %d at IL_%04x to IL_%04x\n", clause->try_offset, clause->try_offset + clause->try_len, clause->flags, clause->handler_offset, clause->handler_offset + clause->handler_len);
8363                           while (p < end) {
8364                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8365                           }*/
8366                         /* catch and filter blocks get the exception object on the stack */
8367                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8368                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8369
8370                                 /* mostly like handle_stack_args (), but just sets the input args */
8371                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8372                                 tblock->in_scount = 1;
8373                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8374                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8375
8376                                 cfg->cbb = tblock;
8377
8378 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8379                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8380                                 if (!cfg->compile_llvm) {
8381                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8382                                         ins->dreg = tblock->in_stack [0]->dreg;
8383                                         MONO_ADD_INS (tblock, ins);
8384                                 }
8385 #else
8386                                 MonoInst *dummy_use;
8387
8388                                 /*
8389                                  * Add a dummy use for the exvar so its liveness info will be
8390                                  * correct.
8391                                  */
8392                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8393 #endif
8394
8395                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8396                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8397                                         MONO_ADD_INS (tblock, ins);
8398                                 }
8399
8400                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8401                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8402                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8403                                         tblock->real_offset = clause->data.filter_offset;
8404                                         tblock->in_scount = 1;
8405                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8406                                         /* The filter block shares the exvar with the handler block */
8407                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8408                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8409                                         MONO_ADD_INS (tblock, ins);
8410                                 }
8411                         }
8412
8413                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8414                                         clause->data.catch_class &&
8415                                         cfg->gshared &&
8416                                         mono_class_check_context_used (clause->data.catch_class)) {
8417                                 /*
8418                                  * In shared generic code with catch
8419                                  * clauses containing type variables
8420                                  * the exception handling code has to
8421                                  * be able to get to the rgctx.
8422                                  * Therefore we have to make sure that
8423                                  * the vtable/mrgctx argument (for
8424                                  * static or generic methods) or the
8425                                  * "this" argument (for non-static
8426                                  * methods) are live.
8427                                  */
8428                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8429                                                 mini_method_get_context (method)->method_inst ||
8430                                                 method->klass->valuetype) {
8431                                         mono_get_vtable_var (cfg);
8432                                 } else {
8433                                         MonoInst *dummy_use;
8434
8435                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8436                                 }
8437                         }
8438                 }
8439         } else {
8440                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8441                 cfg->cbb = start_bblock;
8442                 cfg->args = arg_array;
8443                 mono_save_args (cfg, sig, inline_args);
8444         }
8445
8446         /* FIRST CODE BLOCK */
8447         NEW_BBLOCK (cfg, tblock);
8448         tblock->cil_code = ip;
8449         cfg->cbb = tblock;
8450         cfg->ip = ip;
8451
8452         ADD_BBLOCK (cfg, tblock);
8453
8454         if (cfg->method == method) {
8455                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8456                 if (breakpoint_id) {
8457                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8458                         MONO_ADD_INS (cfg->cbb, ins);
8459                 }
8460         }
8461
8462         /* we use a separate basic block for the initialization code */
8463         NEW_BBLOCK (cfg, init_localsbb);
8464         cfg->bb_init = init_localsbb;
8465         init_localsbb->real_offset = cfg->real_offset;
8466         start_bblock->next_bb = init_localsbb;
8467         init_localsbb->next_bb = cfg->cbb;
8468         link_bblock (cfg, start_bblock, init_localsbb);
8469         link_bblock (cfg, init_localsbb, cfg->cbb);
8470
8471         cfg->cbb = init_localsbb;
8472
8473         if (cfg->gsharedvt && cfg->method == method) {
8474                 MonoGSharedVtMethodInfo *info;
8475                 MonoInst *var, *locals_var;
8476                 int dreg;
8477
8478                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8479                 info->method = cfg->method;
8480                 info->count_entries = 16;
8481                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8482                 cfg->gsharedvt_info = info;
8483
8484                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8485                 /* prevent it from being register allocated */
8486                 //var->flags |= MONO_INST_VOLATILE;
8487                 cfg->gsharedvt_info_var = var;
8488
8489                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8490                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8491
8492                 /* Allocate locals */
8493                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8494                 /* prevent it from being register allocated */
8495                 //locals_var->flags |= MONO_INST_VOLATILE;
8496                 cfg->gsharedvt_locals_var = locals_var;
8497
8498                 dreg = alloc_ireg (cfg);
8499                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8500
8501                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8502                 ins->dreg = locals_var->dreg;
8503                 ins->sreg1 = dreg;
8504                 MONO_ADD_INS (cfg->cbb, ins);
8505                 cfg->gsharedvt_locals_var_ins = ins;
8506
8507                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8508                 /*
8509                 if (init_locals)
8510                         ins->flags |= MONO_INST_INIT;
8511                 */
8512         }
8513
8514         if (mono_security_core_clr_enabled ()) {
8515                 /* check if this is native code, e.g. an icall or a p/invoke */
8516                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8517                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8518                         if (wrapped) {
8519                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8520                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8521
8522                                 /* if this ia a native call then it can only be JITted from platform code */
8523                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8524                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8525                                                 MonoException *ex = icall ? mono_get_exception_security () :
8526                                                         mono_get_exception_method_access ();
8527                                                 emit_throw_exception (cfg, ex);
8528                                         }
8529                                 }
8530                         }
8531                 }
8532         }
8533
8534         CHECK_CFG_EXCEPTION;
8535
8536         if (header->code_size == 0)
8537                 UNVERIFIED;
8538
8539         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8540                 ip = err_pos;
8541                 UNVERIFIED;
8542         }
8543
8544         if (cfg->method == method)
8545                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8546
8547         for (n = 0; n < header->num_locals; ++n) {
8548                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8549                         UNVERIFIED;
8550         }
8551         class_inits = NULL;
8552
8553         /* We force the vtable variable here for all shared methods
8554            for the possibility that they might show up in a stack
8555            trace where their exact instantiation is needed. */
8556         if (cfg->gshared && method == cfg->method) {
8557                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8558                                 mini_method_get_context (method)->method_inst ||
8559                                 method->klass->valuetype) {
8560                         mono_get_vtable_var (cfg);
8561                 } else {
8562                         /* FIXME: Is there a better way to do this?
8563                            We need the variable live for the duration
8564                            of the whole method. */
8565                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8566                 }
8567         }
8568
8569         /* add a check for this != NULL to inlined methods */
8570         if (is_virtual_call) {
8571                 MonoInst *arg_ins;
8572
8573                 NEW_ARGLOAD (cfg, arg_ins, 0);
8574                 MONO_ADD_INS (cfg->cbb, arg_ins);
8575                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8576         }
8577
8578         skip_dead_blocks = !dont_verify;
8579         if (skip_dead_blocks) {
8580                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8581                 CHECK_CFG_ERROR;
8582                 g_assert (bb);
8583         }
8584
8585         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8586         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8587
8588         ins_flag = 0;
8589         start_new_bblock = 0;
8590         while (ip < end) {
8591                 if (cfg->method == method)
8592                         cfg->real_offset = ip - header->code;
8593                 else
8594                         cfg->real_offset = inline_offset;
8595                 cfg->ip = ip;
8596
8597                 context_used = 0;
8598
8599                 if (start_new_bblock) {
8600                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8601                         if (start_new_bblock == 2) {
8602                                 g_assert (ip == tblock->cil_code);
8603                         } else {
8604                                 GET_BBLOCK (cfg, tblock, ip);
8605                         }
8606                         cfg->cbb->next_bb = tblock;
8607                         cfg->cbb = tblock;
8608                         start_new_bblock = 0;
8609                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8610                                 if (cfg->verbose_level > 3)
8611                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8612                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8613                                 *sp++ = ins;
8614                         }
8615                         if (class_inits)
8616                                 g_slist_free (class_inits);
8617                         class_inits = NULL;
8618                 } else {
8619                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8620                                 link_bblock (cfg, cfg->cbb, tblock);
8621                                 if (sp != stack_start) {
8622                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8623                                         sp = stack_start;
8624                                         CHECK_UNVERIFIABLE (cfg);
8625                                 }
8626                                 cfg->cbb->next_bb = tblock;
8627                                 cfg->cbb = tblock;
8628                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8629                                         if (cfg->verbose_level > 3)
8630                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8631                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8632                                         *sp++ = ins;
8633                                 }
8634                                 g_slist_free (class_inits);
8635                                 class_inits = NULL;
8636                         }
8637                 }
8638
8639                 if (skip_dead_blocks) {
8640                         int ip_offset = ip - header->code;
8641
8642                         if (ip_offset == bb->end)
8643                                 bb = bb->next;
8644
8645                         if (bb->dead) {
8646                                 int op_size = mono_opcode_size (ip, end);
8647                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8648
8649                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8650
8651                                 if (ip_offset + op_size == bb->end) {
8652                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8653                                         MONO_ADD_INS (cfg->cbb, ins);
8654                                         start_new_bblock = 1;
8655                                 }
8656
8657                                 ip += op_size;
8658                                 continue;
8659                         }
8660                 }
8661                 /*
8662                  * Sequence points are points where the debugger can place a breakpoint.
8663                  * Currently, we generate these automatically at points where the IL
8664                  * stack is empty.
8665                  */
8666                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8667                         /*
8668                          * Make methods interruptable at the beginning, and at the targets of
8669                          * backward branches.
8670                          * Also, do this at the start of every bblock in methods with clauses too,
8671                          * to be able to handle instructions with inprecise control flow like
8672                          * throw/endfinally.
8673                          * Backward branches are handled at the end of method-to-ir ().
8674                          */
8675                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8676                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8677
8678                         /* Avoid sequence points on empty IL like .volatile */
8679                         // FIXME: Enable this
8680                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8681                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8682                         if ((sp != stack_start) && !sym_seq_point)
8683                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8684                         MONO_ADD_INS (cfg->cbb, ins);
8685
8686                         if (sym_seq_points)
8687                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8688                 }
8689
8690                 cfg->cbb->real_offset = cfg->real_offset;
8691
8692                 if ((cfg->method == method) && cfg->coverage_info) {
8693                         guint32 cil_offset = ip - header->code;
8694                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8695
8696                         /* TODO: Use an increment here */
8697 #if defined(TARGET_X86)
8698                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8699                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8700                         ins->inst_imm = 1;
8701                         MONO_ADD_INS (cfg->cbb, ins);
8702 #else
8703                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8704                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8705 #endif
8706                 }
8707
8708                 if (cfg->verbose_level > 3)
8709                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8710
8711                 switch (*ip) {
8712                 case CEE_NOP:
8713                         if (seq_points && !sym_seq_points && sp != stack_start) {
8714                                 /*
8715                                  * The C# compiler uses these nops to notify the JIT that it should
8716                                  * insert seq points.
8717                                  */
8718                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8719                                 MONO_ADD_INS (cfg->cbb, ins);
8720                         }
8721                         if (cfg->keep_cil_nops)
8722                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8723                         else
8724                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8725                         ip++;
8726                         MONO_ADD_INS (cfg->cbb, ins);
8727                         break;
8728                 case CEE_BREAK:
8729                         if (should_insert_brekpoint (cfg->method)) {
8730                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8731                         } else {
8732                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8733                         }
8734                         ip++;
8735                         MONO_ADD_INS (cfg->cbb, ins);
8736                         break;
8737                 case CEE_LDARG_0:
8738                 case CEE_LDARG_1:
8739                 case CEE_LDARG_2:
8740                 case CEE_LDARG_3:
8741                         CHECK_STACK_OVF (1);
8742                         n = (*ip)-CEE_LDARG_0;
8743                         CHECK_ARG (n);
8744                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8745                         ip++;
8746                         *sp++ = ins;
8747                         break;
8748                 case CEE_LDLOC_0:
8749                 case CEE_LDLOC_1:
8750                 case CEE_LDLOC_2:
8751                 case CEE_LDLOC_3:
8752                         CHECK_STACK_OVF (1);
8753                         n = (*ip)-CEE_LDLOC_0;
8754                         CHECK_LOCAL (n);
8755                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8756                         ip++;
8757                         *sp++ = ins;
8758                         break;
8759                 case CEE_STLOC_0:
8760                 case CEE_STLOC_1:
8761                 case CEE_STLOC_2:
8762                 case CEE_STLOC_3: {
8763                         CHECK_STACK (1);
8764                         n = (*ip)-CEE_STLOC_0;
8765                         CHECK_LOCAL (n);
8766                         --sp;
8767                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8768                                 UNVERIFIED;
8769                         emit_stloc_ir (cfg, sp, header, n);
8770                         ++ip;
8771                         inline_costs += 1;
8772                         break;
8773                         }
8774                 case CEE_LDARG_S:
8775                         CHECK_OPSIZE (2);
8776                         CHECK_STACK_OVF (1);
8777                         n = ip [1];
8778                         CHECK_ARG (n);
8779                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8780                         *sp++ = ins;
8781                         ip += 2;
8782                         break;
8783                 case CEE_LDARGA_S:
8784                         CHECK_OPSIZE (2);
8785                         CHECK_STACK_OVF (1);
8786                         n = ip [1];
8787                         CHECK_ARG (n);
8788                         NEW_ARGLOADA (cfg, ins, n);
8789                         MONO_ADD_INS (cfg->cbb, ins);
8790                         *sp++ = ins;
8791                         ip += 2;
8792                         break;
8793                 case CEE_STARG_S:
8794                         CHECK_OPSIZE (2);
8795                         CHECK_STACK (1);
8796                         --sp;
8797                         n = ip [1];
8798                         CHECK_ARG (n);
8799                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8800                                 UNVERIFIED;
8801                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8802                         ip += 2;
8803                         break;
8804                 case CEE_LDLOC_S:
8805                         CHECK_OPSIZE (2);
8806                         CHECK_STACK_OVF (1);
8807                         n = ip [1];
8808                         CHECK_LOCAL (n);
8809                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8810                         *sp++ = ins;
8811                         ip += 2;
8812                         break;
8813                 case CEE_LDLOCA_S: {
8814                         unsigned char *tmp_ip;
8815                         CHECK_OPSIZE (2);
8816                         CHECK_STACK_OVF (1);
8817                         CHECK_LOCAL (ip [1]);
8818
8819                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8820                                 ip = tmp_ip;
8821                                 inline_costs += 1;
8822                                 break;
8823                         }
8824
8825                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8826                         *sp++ = ins;
8827                         ip += 2;
8828                         break;
8829                 }
8830                 case CEE_STLOC_S:
8831                         CHECK_OPSIZE (2);
8832                         CHECK_STACK (1);
8833                         --sp;
8834                         CHECK_LOCAL (ip [1]);
8835                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8836                                 UNVERIFIED;
8837                         emit_stloc_ir (cfg, sp, header, ip [1]);
8838                         ip += 2;
8839                         inline_costs += 1;
8840                         break;
8841                 case CEE_LDNULL:
8842                         CHECK_STACK_OVF (1);
8843                         EMIT_NEW_PCONST (cfg, ins, NULL);
8844                         ins->type = STACK_OBJ;
8845                         ++ip;
8846                         *sp++ = ins;
8847                         break;
8848                 case CEE_LDC_I4_M1:
8849                         CHECK_STACK_OVF (1);
8850                         EMIT_NEW_ICONST (cfg, ins, -1);
8851                         ++ip;
8852                         *sp++ = ins;
8853                         break;
8854                 case CEE_LDC_I4_0:
8855                 case CEE_LDC_I4_1:
8856                 case CEE_LDC_I4_2:
8857                 case CEE_LDC_I4_3:
8858                 case CEE_LDC_I4_4:
8859                 case CEE_LDC_I4_5:
8860                 case CEE_LDC_I4_6:
8861                 case CEE_LDC_I4_7:
8862                 case CEE_LDC_I4_8:
8863                         CHECK_STACK_OVF (1);
8864                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8865                         ++ip;
8866                         *sp++ = ins;
8867                         break;
8868                 case CEE_LDC_I4_S:
8869                         CHECK_OPSIZE (2);
8870                         CHECK_STACK_OVF (1);
8871                         ++ip;
8872                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8873                         ++ip;
8874                         *sp++ = ins;
8875                         break;
8876                 case CEE_LDC_I4:
8877                         CHECK_OPSIZE (5);
8878                         CHECK_STACK_OVF (1);
8879                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8880                         ip += 5;
8881                         *sp++ = ins;
8882                         break;
8883                 case CEE_LDC_I8:
8884                         CHECK_OPSIZE (9);
8885                         CHECK_STACK_OVF (1);
8886                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8887                         ins->type = STACK_I8;
8888                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8889                         ++ip;
8890                         ins->inst_l = (gint64)read64 (ip);
8891                         MONO_ADD_INS (cfg->cbb, ins);
8892                         ip += 8;
8893                         *sp++ = ins;
8894                         break;
8895                 case CEE_LDC_R4: {
8896                         float *f;
8897                         gboolean use_aotconst = FALSE;
8898
8899 #ifdef TARGET_POWERPC
8900                         /* FIXME: Clean this up */
8901                         if (cfg->compile_aot)
8902                                 use_aotconst = TRUE;
8903 #endif
8904
8905                         /* FIXME: we should really allocate this only late in the compilation process */
8906                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8907                         CHECK_OPSIZE (5);
8908                         CHECK_STACK_OVF (1);
8909
8910                         if (use_aotconst) {
8911                                 MonoInst *cons;
8912                                 int dreg;
8913
8914                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8915
8916                                 dreg = alloc_freg (cfg);
8917                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8918                                 ins->type = cfg->r4_stack_type;
8919                         } else {
8920                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8921                                 ins->type = cfg->r4_stack_type;
8922                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8923                                 ins->inst_p0 = f;
8924                                 MONO_ADD_INS (cfg->cbb, ins);
8925                         }
8926                         ++ip;
8927                         readr4 (ip, f);
8928                         ip += 4;
8929                         *sp++ = ins;
8930                         break;
8931                 }
8932                 case CEE_LDC_R8: {
8933                         double *d;
8934                         gboolean use_aotconst = FALSE;
8935
8936 #ifdef TARGET_POWERPC
8937                         /* FIXME: Clean this up */
8938                         if (cfg->compile_aot)
8939                                 use_aotconst = TRUE;
8940 #endif
8941
8942                         /* FIXME: we should really allocate this only late in the compilation process */
8943                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8944                         CHECK_OPSIZE (9);
8945                         CHECK_STACK_OVF (1);
8946
8947                         if (use_aotconst) {
8948                                 MonoInst *cons;
8949                                 int dreg;
8950
8951                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8952
8953                                 dreg = alloc_freg (cfg);
8954                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8955                                 ins->type = STACK_R8;
8956                         } else {
8957                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8958                                 ins->type = STACK_R8;
8959                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8960                                 ins->inst_p0 = d;
8961                                 MONO_ADD_INS (cfg->cbb, ins);
8962                         }
8963                         ++ip;
8964                         readr8 (ip, d);
8965                         ip += 8;
8966                         *sp++ = ins;
8967                         break;
8968                 }
8969                 case CEE_DUP: {
8970                         MonoInst *temp, *store;
8971                         CHECK_STACK (1);
8972                         CHECK_STACK_OVF (1);
8973                         sp--;
8974                         ins = *sp;
8975
8976                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8977                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8978
8979                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8980                         *sp++ = ins;
8981
8982                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8983                         *sp++ = ins;
8984
8985                         ++ip;
8986                         inline_costs += 2;
8987                         break;
8988                 }
8989                 case CEE_POP:
8990                         CHECK_STACK (1);
8991                         ip++;
8992                         --sp;
8993
8994 #ifdef TARGET_X86
8995                         if (sp [0]->type == STACK_R8)
8996                                 /* we need to pop the value from the x86 FP stack */
8997                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8998 #endif
8999                         break;
9000                 case CEE_JMP: {
9001                         MonoCallInst *call;
9002                         MonoMethodSignature *fsig;
9003                         int i, n;
9004
9005                         INLINE_FAILURE ("jmp");
9006                         GSHAREDVT_FAILURE (*ip);
9007
9008                         CHECK_OPSIZE (5);
9009                         if (stack_start != sp)
9010                                 UNVERIFIED;
9011                         token = read32 (ip + 1);
9012                         /* FIXME: check the signature matches */
9013                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9014                         CHECK_CFG_ERROR;
9015
9016                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9017                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9018
9019                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9020
9021                         fsig = mono_method_signature (cmethod);
9022                         n = fsig->param_count + fsig->hasthis;
9023                         if (cfg->llvm_only) {
9024                                 MonoInst **args;
9025
9026                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9027                                 for (i = 0; i < n; ++i)
9028                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9029                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9030                                 /*
9031                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9032                                  * have to emit a normal return since llvm expects it.
9033                                  */
9034                                 if (cfg->ret)
9035                                         emit_setret (cfg, ins);
9036                                 MONO_INST_NEW (cfg, ins, OP_BR);
9037                                 ins->inst_target_bb = end_bblock;
9038                                 MONO_ADD_INS (cfg->cbb, ins);
9039                                 link_bblock (cfg, cfg->cbb, end_bblock);
9040                                 ip += 5;
9041                                 break;
9042                         } else if (cfg->backend->have_op_tail_call) {
9043                                 /* Handle tail calls similarly to calls */
9044                                 DISABLE_AOT (cfg);
9045
9046                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9047                                 call->method = cmethod;
9048                                 call->tail_call = TRUE;
9049                                 call->signature = mono_method_signature (cmethod);
9050                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9051                                 call->inst.inst_p0 = cmethod;
9052                                 for (i = 0; i < n; ++i)
9053                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9054
9055                                 mono_arch_emit_call (cfg, call);
9056                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9057                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9058                         } else {
9059                                 for (i = 0; i < num_args; ++i)
9060                                         /* Prevent arguments from being optimized away */
9061                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9062
9063                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9064                                 ins = (MonoInst*)call;
9065                                 ins->inst_p0 = cmethod;
9066                                 MONO_ADD_INS (cfg->cbb, ins);
9067                         }
9068
9069                         ip += 5;
9070                         start_new_bblock = 1;
9071                         break;
9072                 }
9073                 case CEE_CALLI: {
9074                         MonoInst *addr;
9075                         MonoMethodSignature *fsig;
9076
9077                         CHECK_OPSIZE (5);
9078                         token = read32 (ip + 1);
9079
9080                         ins = NULL;
9081
9082                         //GSHAREDVT_FAILURE (*ip);
9083                         cmethod = NULL;
9084                         CHECK_STACK (1);
9085                         --sp;
9086                         addr = *sp;
9087                         fsig = mini_get_signature (method, token, generic_context);
9088
9089                         if (method->dynamic && fsig->pinvoke) {
9090                                 MonoInst *args [3];
9091
9092                                 /*
9093                                  * This is a call through a function pointer using a pinvoke
9094                                  * signature. Have to create a wrapper and call that instead.
9095                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9096                                  * instead based on the signature.
9097                                  */
9098                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9099                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9100                                 args [2] = addr;
9101                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9102                         }
9103
9104                         n = fsig->param_count + fsig->hasthis;
9105
9106                         CHECK_STACK (n);
9107
9108                         //g_assert (!virtual_ || fsig->hasthis);
9109
9110                         sp -= n;
9111
9112                         inline_costs += 10 * num_calls++;
9113
9114                         /*
9115                          * Making generic calls out of gsharedvt methods.
9116                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9117                          * patching gshared method addresses into a gsharedvt method.
9118                          */
9119                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9120                                 /*
9121                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9122                                  */
9123                                 MonoInst *callee = addr;
9124
9125                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9126                                         /* Not tested */
9127                                         GSHAREDVT_FAILURE (*ip);
9128
9129                                 if (cfg->llvm_only)
9130                                         // FIXME:
9131                                         GSHAREDVT_FAILURE (*ip);
9132
9133                                 addr = emit_get_rgctx_sig (cfg, context_used,
9134                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9135                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9136                                 goto calli_end;
9137                         }
9138
9139                         /* Prevent inlining of methods with indirect calls */
9140                         INLINE_FAILURE ("indirect call");
9141
9142                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9143                                 MonoJumpInfoType info_type;
9144                                 gpointer info_data;
9145
9146                                 /*
9147                                  * Instead of emitting an indirect call, emit a direct call
9148                                  * with the contents of the aotconst as the patch info.
9149                                  */
9150                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9151                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9152                                         info_data = addr->inst_p0;
9153                                 } else {
9154                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9155                                         info_data = addr->inst_right->inst_left;
9156                                 }
9157
9158                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9159                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9160                                         NULLIFY_INS (addr);
9161                                         goto calli_end;
9162                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9163                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9164                                         NULLIFY_INS (addr);
9165                                         goto calli_end;
9166                                 }
9167                         }
9168                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9169
9170                         calli_end:
9171
9172                         /* End of call, INS should contain the result of the call, if any */
9173
9174                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9175                                 g_assert (ins);
9176                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9177                         }
9178
9179                         CHECK_CFG_EXCEPTION;
9180
9181                         ip += 5;
9182                         ins_flag = 0;
9183                         constrained_class = NULL;
9184                         break;
9185                 }
9186                 case CEE_CALL:
9187                 case CEE_CALLVIRT: {
9188                         MonoInst *addr = NULL;
9189                         MonoMethodSignature *fsig = NULL;
9190                         int array_rank = 0;
9191                         int virtual_ = *ip == CEE_CALLVIRT;
9192                         gboolean pass_imt_from_rgctx = FALSE;
9193                         MonoInst *imt_arg = NULL;
9194                         MonoInst *keep_this_alive = NULL;
9195                         gboolean pass_vtable = FALSE;
9196                         gboolean pass_mrgctx = FALSE;
9197                         MonoInst *vtable_arg = NULL;
9198                         gboolean check_this = FALSE;
9199                         gboolean supported_tail_call = FALSE;
9200                         gboolean tail_call = FALSE;
9201                         gboolean need_seq_point = FALSE;
9202                         guint32 call_opcode = *ip;
9203                         gboolean emit_widen = TRUE;
9204                         gboolean push_res = TRUE;
9205                         gboolean skip_ret = FALSE;
9206                         gboolean delegate_invoke = FALSE;
9207                         gboolean direct_icall = FALSE;
9208                         gboolean constrained_partial_call = FALSE;
9209                         MonoMethod *cil_method;
9210
9211                         CHECK_OPSIZE (5);
9212                         token = read32 (ip + 1);
9213
9214                         ins = NULL;
9215
9216                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9217                         CHECK_CFG_ERROR;
9218
9219                         cil_method = cmethod;
9220
9221                         if (constrained_class) {
9222                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9223                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9224                                                 g_assert (!cmethod->klass->valuetype);
9225                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9226                                                         constrained_partial_call = TRUE;
9227                                         }
9228                                 }
9229
9230                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9231                                         if (cfg->verbose_level > 2)
9232                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9233                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9234                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9235                                                   cfg->gshared)) {
9236                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9237                                                 CHECK_CFG_ERROR;
9238                                         }
9239                                 } else {
9240                                         if (cfg->verbose_level > 2)
9241                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9242
9243                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9244                                                 /*
9245                                                  * This is needed since get_method_constrained can't find
9246                                                  * the method in klass representing a type var.
9247                                                  * The type var is guaranteed to be a reference type in this
9248                                                  * case.
9249                                                  */
9250                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9251                                                         g_assert (!cmethod->klass->valuetype);
9252                                         } else {
9253                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9254                                                 CHECK_CFG_ERROR;
9255                                         }
9256                                 }
9257                         }
9258
9259                         if (!dont_verify && !cfg->skip_visibility) {
9260                                 MonoMethod *target_method = cil_method;
9261                                 if (method->is_inflated) {
9262                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9263                                         CHECK_CFG_ERROR;
9264                                 }
9265                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9266                                         !mono_method_can_access_method (method, cil_method))
9267                                         METHOD_ACCESS_FAILURE (method, cil_method);
9268                         }
9269
9270                         if (mono_security_core_clr_enabled ())
9271                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9272
9273                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9274                                 /* MS.NET seems to silently convert this to a callvirt */
9275                                 virtual_ = 1;
9276
9277                         {
9278                                 /*
9279                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9280                                  * converts to a callvirt.
9281                                  *
9282                                  * tests/bug-515884.il is an example of this behavior
9283                                  */
9284                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9285                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9286                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9287                                         virtual_ = 1;
9288                         }
9289
9290                         if (!cmethod->klass->inited)
9291                                 if (!mono_class_init (cmethod->klass))
9292                                         TYPE_LOAD_ERROR (cmethod->klass);
9293
9294                         fsig = mono_method_signature (cmethod);
9295                         if (!fsig)
9296                                 LOAD_ERROR;
9297                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9298                                 mini_class_is_system_array (cmethod->klass)) {
9299                                 array_rank = cmethod->klass->rank;
9300                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9301                                 direct_icall = TRUE;
9302                         } else if (fsig->pinvoke) {
9303                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9304                                 fsig = mono_method_signature (wrapper);
9305                         } else if (constrained_class) {
9306                         } else {
9307                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9308                                 CHECK_CFG_ERROR;
9309                         }
9310
9311                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
9312                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9313
9314                         /* See code below */
9315                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9316                                 MonoBasicBlock *tbb;
9317
9318                                 GET_BBLOCK (cfg, tbb, ip + 5);
9319                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9320                                         /*
9321                                          * We want to extend the try block to cover the call, but we can't do it if the
9322                                          * call is made directly since its followed by an exception check.
9323                                          */
9324                                         direct_icall = FALSE;
9325                                 }
9326                         }
9327
9328                         mono_save_token_info (cfg, image, token, cil_method);
9329
9330                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9331                                 need_seq_point = TRUE;
9332
9333                         /* Don't support calls made using type arguments for now */
9334                         /*
9335                           if (cfg->gsharedvt) {
9336                           if (mini_is_gsharedvt_signature (fsig))
9337                           GSHAREDVT_FAILURE (*ip);
9338                           }
9339                         */
9340
9341                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9342                                 g_assert_not_reached ();
9343
9344                         n = fsig->param_count + fsig->hasthis;
9345
9346                         if (!cfg->gshared && cmethod->klass->generic_container)
9347                                 UNVERIFIED;
9348
9349                         if (!cfg->gshared)
9350                                 g_assert (!mono_method_check_context_used (cmethod));
9351
9352                         CHECK_STACK (n);
9353
9354                         //g_assert (!virtual_ || fsig->hasthis);
9355
9356                         sp -= n;
9357
9358                         /*
9359                          * We have the `constrained.' prefix opcode.
9360                          */
9361                         if (constrained_class) {
9362                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9363                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9364                                                 /* The 'Own method' case below */
9365                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9366                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9367                                         } else {
9368                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9369                                                 CHECK_CFG_EXCEPTION;
9370                                                 g_assert (ins);
9371                                                 goto call_end;
9372                                         }
9373                                 }
9374
9375                                 if (constrained_partial_call) {
9376                                         gboolean need_box = TRUE;
9377
9378                                         /*
9379                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9380                                          * called method is not known at compile time either. The called method could end up being
9381                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9382                                          * to box the receiver.
9383                                          * A simple solution would be to box always and make a normal virtual call, but that would
9384                                          * be bad performance wise.
9385                                          */
9386                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9387                                                 /*
9388                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9389                                                  */
9390                                                 need_box = FALSE;
9391                                         }
9392
9393                                         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)) {
9394                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9395                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9396                                                 ins->klass = constrained_class;
9397                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9398                                                 CHECK_CFG_EXCEPTION;
9399                                         } else if (need_box) {
9400                                                 MonoInst *box_type;
9401                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9402                                                 MonoInst *nonbox_call;
9403
9404                                                 /*
9405                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9406                                                  * if needed.
9407                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9408                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9409                                                  */
9410                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9411
9412                                                 NEW_BBLOCK (cfg, is_ref_bb);
9413                                                 NEW_BBLOCK (cfg, end_bb);
9414
9415                                                 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);
9416                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9417                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9418
9419                                                 /* Non-ref case */
9420                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9421
9422                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9423
9424                                                 /* Ref case */
9425                                                 MONO_START_BB (cfg, is_ref_bb);
9426                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9427                                                 ins->klass = constrained_class;
9428                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9429                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9430
9431                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9432
9433                                                 MONO_START_BB (cfg, end_bb);
9434                                                 cfg->cbb = end_bb;
9435
9436                                                 nonbox_call->dreg = ins->dreg;
9437                                                 goto call_end;
9438                                         } else {
9439                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9440                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9441                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9442                                                 goto call_end;
9443                                         }
9444                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9445                                         /*
9446                                          * The type parameter is instantiated as a valuetype,
9447                                          * but that type doesn't override the method we're
9448                                          * calling, so we need to box `this'.
9449                                          */
9450                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9451                                         ins->klass = constrained_class;
9452                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9453                                         CHECK_CFG_EXCEPTION;
9454                                 } else if (!constrained_class->valuetype) {
9455                                         int dreg = alloc_ireg_ref (cfg);
9456
9457                                         /*
9458                                          * The type parameter is instantiated as a reference
9459                                          * type.  We have a managed pointer on the stack, so
9460                                          * we need to dereference it here.
9461                                          */
9462                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9463                                         ins->type = STACK_OBJ;
9464                                         sp [0] = ins;
9465                                 } else {
9466                                         if (cmethod->klass->valuetype) {
9467                                                 /* Own method */
9468                                         } else {
9469                                                 /* Interface method */
9470                                                 int ioffset, slot;
9471
9472                                                 mono_class_setup_vtable (constrained_class);
9473                                                 CHECK_TYPELOAD (constrained_class);
9474                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9475                                                 if (ioffset == -1)
9476                                                         TYPE_LOAD_ERROR (constrained_class);
9477                                                 slot = mono_method_get_vtable_slot (cmethod);
9478                                                 if (slot == -1)
9479                                                         TYPE_LOAD_ERROR (cmethod->klass);
9480                                                 cmethod = constrained_class->vtable [ioffset + slot];
9481
9482                                                 if (cmethod->klass == mono_defaults.enum_class) {
9483                                                         /* Enum implements some interfaces, so treat this as the first case */
9484                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9485                                                         ins->klass = constrained_class;
9486                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9487                                                         CHECK_CFG_EXCEPTION;
9488                                                 }
9489                                         }
9490                                         virtual_ = 0;
9491                                 }
9492                                 constrained_class = NULL;
9493                         }
9494
9495                         if (check_call_signature (cfg, fsig, sp))
9496                                 UNVERIFIED;
9497
9498                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9499                                 delegate_invoke = TRUE;
9500
9501                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9502                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9503                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9504                                         emit_widen = FALSE;
9505                                 }
9506
9507                                 goto call_end;
9508                         }
9509
9510                         /*
9511                          * If the callee is a shared method, then its static cctor
9512                          * might not get called after the call was patched.
9513                          */
9514                         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)) {
9515                                 emit_class_init (cfg, cmethod->klass);
9516                                 CHECK_TYPELOAD (cmethod->klass);
9517                         }
9518
9519                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9520
9521                         if (cfg->gshared) {
9522                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9523
9524                                 context_used = mini_method_check_context_used (cfg, cmethod);
9525
9526                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9527                                         /* Generic method interface
9528                                            calls are resolved via a
9529                                            helper function and don't
9530                                            need an imt. */
9531                                         if (!cmethod_context || !cmethod_context->method_inst)
9532                                                 pass_imt_from_rgctx = TRUE;
9533                                 }
9534
9535                                 /*
9536                                  * If a shared method calls another
9537                                  * shared method then the caller must
9538                                  * have a generic sharing context
9539                                  * because the magic trampoline
9540                                  * requires it.  FIXME: We shouldn't
9541                                  * have to force the vtable/mrgctx
9542                                  * variable here.  Instead there
9543                                  * should be a flag in the cfg to
9544                                  * request a generic sharing context.
9545                                  */
9546                                 if (context_used &&
9547                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9548                                         mono_get_vtable_var (cfg);
9549                         }
9550
9551                         if (pass_vtable) {
9552                                 if (context_used) {
9553                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9554                                 } else {
9555                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9556
9557                                         CHECK_TYPELOAD (cmethod->klass);
9558                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9559                                 }
9560                         }
9561
9562                         if (pass_mrgctx) {
9563                                 g_assert (!vtable_arg);
9564
9565                                 if (!cfg->compile_aot) {
9566                                         /*
9567                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9568                                          * for type load errors before.
9569                                          */
9570                                         mono_class_setup_vtable (cmethod->klass);
9571                                         CHECK_TYPELOAD (cmethod->klass);
9572                                 }
9573
9574                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9575
9576                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9577                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9578                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9579                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9580                                         if (virtual_)
9581                                                 check_this = TRUE;
9582                                         virtual_ = 0;
9583                                 }
9584                         }
9585
9586                         if (pass_imt_from_rgctx) {
9587                                 g_assert (!pass_vtable);
9588
9589                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9590                                         cmethod, MONO_RGCTX_INFO_METHOD);
9591                         }
9592
9593                         if (check_this)
9594                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9595
9596                         /* Calling virtual generic methods */
9597                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9598                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9599                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9600                             fsig->generic_param_count &&
9601                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9602                                 !cfg->llvm_only) {
9603                                 MonoInst *this_temp, *this_arg_temp, *store;
9604                                 MonoInst *iargs [4];
9605
9606                                 g_assert (fsig->is_inflated);
9607
9608                                 /* Prevent inlining of methods that contain indirect calls */
9609                                 INLINE_FAILURE ("virtual generic call");
9610
9611                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9612                                         GSHAREDVT_FAILURE (*ip);
9613
9614                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9615                                         g_assert (!imt_arg);
9616                                         if (!context_used)
9617                                                 g_assert (cmethod->is_inflated);
9618                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9619                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9620                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9621                                 } else {
9622                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9623                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9624                                         MONO_ADD_INS (cfg->cbb, store);
9625
9626                                         /* FIXME: This should be a managed pointer */
9627                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9628
9629                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9630                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9631                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9632                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9633                                         addr = mono_emit_jit_icall (cfg,
9634                                                                                                 mono_helper_compile_generic_method, iargs);
9635
9636                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9637
9638                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9639                                 }
9640
9641                                 goto call_end;
9642                         }
9643
9644                         /*
9645                          * Implement a workaround for the inherent races involved in locking:
9646                          * Monitor.Enter ()
9647                          * try {
9648                          * } finally {
9649                          *    Monitor.Exit ()
9650                          * }
9651                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9652                          * try block, the Exit () won't be executed, see:
9653                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9654                          * To work around this, we extend such try blocks to include the last x bytes
9655                          * of the Monitor.Enter () call.
9656                          */
9657                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9658                                 MonoBasicBlock *tbb;
9659
9660                                 GET_BBLOCK (cfg, tbb, ip + 5);
9661                                 /*
9662                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9663                                  * from Monitor.Enter like ArgumentNullException.
9664                                  */
9665                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9666                                         /* Mark this bblock as needing to be extended */
9667                                         tbb->extend_try_block = TRUE;
9668                                 }
9669                         }
9670
9671                         /* Conversion to a JIT intrinsic */
9672                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9673                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9674                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9675                                         emit_widen = FALSE;
9676                                 }
9677                                 goto call_end;
9678                         }
9679
9680                         /* Inlining */
9681                         if ((cfg->opt & MONO_OPT_INLINE) &&
9682                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9683                             mono_method_check_inlining (cfg, cmethod)) {
9684                                 int costs;
9685                                 gboolean always = FALSE;
9686
9687                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9688                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9689                                         /* Prevent inlining of methods that call wrappers */
9690                                         INLINE_FAILURE ("wrapper call");
9691                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9692                                         always = TRUE;
9693                                 }
9694
9695                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9696                                 if (costs) {
9697                                         cfg->real_offset += 5;
9698
9699                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9700                                                 /* *sp is already set by inline_method */
9701                                                 sp++;
9702                                                 push_res = FALSE;
9703                                         }
9704
9705                                         inline_costs += costs;
9706
9707                                         goto call_end;
9708                                 }
9709                         }
9710
9711                         /* Tail recursion elimination */
9712                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9713                                 gboolean has_vtargs = FALSE;
9714                                 int i;
9715
9716                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9717                                 INLINE_FAILURE ("tail call");
9718
9719                                 /* keep it simple */
9720                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9721                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9722                                                 has_vtargs = TRUE;
9723                                 }
9724
9725                                 if (!has_vtargs) {
9726                                         for (i = 0; i < n; ++i)
9727                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9728                                         MONO_INST_NEW (cfg, ins, OP_BR);
9729                                         MONO_ADD_INS (cfg->cbb, ins);
9730                                         tblock = start_bblock->out_bb [0];
9731                                         link_bblock (cfg, cfg->cbb, tblock);
9732                                         ins->inst_target_bb = tblock;
9733                                         start_new_bblock = 1;
9734
9735                                         /* skip the CEE_RET, too */
9736                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9737                                                 skip_ret = TRUE;
9738                                         push_res = FALSE;
9739                                         goto call_end;
9740                                 }
9741                         }
9742
9743                         inline_costs += 10 * num_calls++;
9744
9745                         /*
9746                          * Making generic calls out of gsharedvt methods.
9747                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9748                          * patching gshared method addresses into a gsharedvt method.
9749                          */
9750                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9751                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9752                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9753                                 MonoRgctxInfoType info_type;
9754
9755                                 if (virtual_) {
9756                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9757                                                 //GSHAREDVT_FAILURE (*ip);
9758                                         // disable for possible remoting calls
9759                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9760                                                 GSHAREDVT_FAILURE (*ip);
9761                                         if (fsig->generic_param_count) {
9762                                                 /* virtual generic call */
9763                                                 g_assert (!imt_arg);
9764                                                 /* Same as the virtual generic case above */
9765                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9766                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9767                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9768                                                 vtable_arg = NULL;
9769                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9770                                                 /* This can happen when we call a fully instantiated iface method */
9771                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9772                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9773                                                 vtable_arg = NULL;
9774                                         }
9775                                 }
9776
9777                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9778                                         keep_this_alive = sp [0];
9779
9780                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9781                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9782                                 else
9783                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9784                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9785
9786                                 if (cfg->llvm_only) {
9787                                         // FIXME: Avoid initializing vtable_arg
9788                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9789                                 } else {
9790                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9791                                 }
9792                                 goto call_end;
9793                         }
9794
9795                         /* Generic sharing */
9796
9797                         /*
9798                          * Use this if the callee is gsharedvt sharable too, since
9799                          * at runtime we might find an instantiation so the call cannot
9800                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9801                          */
9802                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9803                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9804                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9805                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9806                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9807                                 INLINE_FAILURE ("gshared");
9808
9809                                 g_assert (cfg->gshared && cmethod);
9810                                 g_assert (!addr);
9811
9812                                 /*
9813                                  * We are compiling a call to a
9814                                  * generic method from shared code,
9815                                  * which means that we have to look up
9816                                  * the method in the rgctx and do an
9817                                  * indirect call.
9818                                  */
9819                                 if (fsig->hasthis)
9820                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9821
9822                                 if (cfg->llvm_only) {
9823                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9824                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9825                                         else
9826                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9827                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9828                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9829                                 } else {
9830                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9831                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9832                                 }
9833                                 goto call_end;
9834                         }
9835
9836                         /* Direct calls to icalls */
9837                         if (direct_icall) {
9838                                 MonoMethod *wrapper;
9839                                 int costs;
9840
9841                                 /* Inline the wrapper */
9842                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9843
9844                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9845                                 g_assert (costs > 0);
9846                                 cfg->real_offset += 5;
9847
9848                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9849                                         /* *sp is already set by inline_method */
9850                                         sp++;
9851                                         push_res = FALSE;
9852                                 }
9853
9854                                 inline_costs += costs;
9855
9856                                 goto call_end;
9857                         }
9858
9859                         /* Array methods */
9860                         if (array_rank) {
9861                                 MonoInst *addr;
9862
9863                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9864                                         MonoInst *val = sp [fsig->param_count];
9865
9866                                         if (val->type == STACK_OBJ) {
9867                                                 MonoInst *iargs [2];
9868
9869                                                 iargs [0] = sp [0];
9870                                                 iargs [1] = val;
9871
9872                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9873                                         }
9874
9875                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9876                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9877                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9878                                                 emit_write_barrier (cfg, addr, val);
9879                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9880                                                 GSHAREDVT_FAILURE (*ip);
9881                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9882                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9883
9884                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9885                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9886                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9887                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9888                                         CHECK_TYPELOAD (cmethod->klass);
9889
9890                                         readonly = FALSE;
9891                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9892                                         ins = addr;
9893                                 } else {
9894                                         g_assert_not_reached ();
9895                                 }
9896
9897                                 emit_widen = FALSE;
9898                                 goto call_end;
9899                         }
9900
9901                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9902                         if (ins)
9903                                 goto call_end;
9904
9905                         /* Tail prefix / tail call optimization */
9906
9907                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9908                         /* FIXME: runtime generic context pointer for jumps? */
9909                         /* FIXME: handle this for generic sharing eventually */
9910                         if ((ins_flag & MONO_INST_TAILCALL) &&
9911                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9912                                 supported_tail_call = TRUE;
9913
9914                         if (supported_tail_call) {
9915                                 MonoCallInst *call;
9916
9917                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9918                                 INLINE_FAILURE ("tail call");
9919
9920                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9921
9922                                 if (cfg->backend->have_op_tail_call) {
9923                                         /* Handle tail calls similarly to normal calls */
9924                                         tail_call = TRUE;
9925                                 } else {
9926                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9927
9928                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9929                                         call->tail_call = TRUE;
9930                                         call->method = cmethod;
9931                                         call->signature = mono_method_signature (cmethod);
9932
9933                                         /*
9934                                          * We implement tail calls by storing the actual arguments into the
9935                                          * argument variables, then emitting a CEE_JMP.
9936                                          */
9937                                         for (i = 0; i < n; ++i) {
9938                                                 /* Prevent argument from being register allocated */
9939                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9940                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9941                                         }
9942                                         ins = (MonoInst*)call;
9943                                         ins->inst_p0 = cmethod;
9944                                         ins->inst_p1 = arg_array [0];
9945                                         MONO_ADD_INS (cfg->cbb, ins);
9946                                         link_bblock (cfg, cfg->cbb, end_bblock);
9947                                         start_new_bblock = 1;
9948
9949                                         // FIXME: Eliminate unreachable epilogs
9950
9951                                         /*
9952                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9953                                          * only reachable from this call.
9954                                          */
9955                                         GET_BBLOCK (cfg, tblock, ip + 5);
9956                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9957                                                 skip_ret = TRUE;
9958                                         push_res = FALSE;
9959
9960                                         goto call_end;
9961                                 }
9962                         }
9963
9964                         /*
9965                          * Synchronized wrappers.
9966                          * Its hard to determine where to replace a method with its synchronized
9967                          * wrapper without causing an infinite recursion. The current solution is
9968                          * to add the synchronized wrapper in the trampolines, and to
9969                          * change the called method to a dummy wrapper, and resolve that wrapper
9970                          * to the real method in mono_jit_compile_method ().
9971                          */
9972                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9973                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9974                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9975                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9976                         }
9977
9978                         /*
9979                          * Virtual calls in llvm-only mode.
9980                          */
9981                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9982                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9983                                 goto call_end;
9984                         }
9985
9986                         /* Common call */
9987                         INLINE_FAILURE ("call");
9988                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9989                                                                                           imt_arg, vtable_arg);
9990
9991                         if (tail_call && !cfg->llvm_only) {
9992                                 link_bblock (cfg, cfg->cbb, end_bblock);
9993                                 start_new_bblock = 1;
9994
9995                                 // FIXME: Eliminate unreachable epilogs
9996
9997                                 /*
9998                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9999                                  * only reachable from this call.
10000                                  */
10001                                 GET_BBLOCK (cfg, tblock, ip + 5);
10002                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10003                                         skip_ret = TRUE;
10004                                 push_res = FALSE;
10005                         }
10006
10007                         call_end:
10008
10009                         /* End of call, INS should contain the result of the call, if any */
10010
10011                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10012                                 g_assert (ins);
10013                                 if (emit_widen)
10014                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10015                                 else
10016                                         *sp++ = ins;
10017                         }
10018
10019                         if (keep_this_alive) {
10020                                 MonoInst *dummy_use;
10021
10022                                 /* See mono_emit_method_call_full () */
10023                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10024                         }
10025
10026                         CHECK_CFG_EXCEPTION;
10027
10028                         ip += 5;
10029                         if (skip_ret) {
10030                                 g_assert (*ip == CEE_RET);
10031                                 ip += 1;
10032                         }
10033                         ins_flag = 0;
10034                         constrained_class = NULL;
10035                         if (need_seq_point)
10036                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10037                         break;
10038                 }
10039                 case CEE_RET:
10040                         if (cfg->method != method) {
10041                                 /* return from inlined method */
10042                                 /*
10043                                  * If in_count == 0, that means the ret is unreachable due to
10044                                  * being preceeded by a throw. In that case, inline_method () will
10045                                  * handle setting the return value
10046                                  * (test case: test_0_inline_throw ()).
10047                                  */
10048                                 if (return_var && cfg->cbb->in_count) {
10049                                         MonoType *ret_type = mono_method_signature (method)->ret;
10050
10051                                         MonoInst *store;
10052                                         CHECK_STACK (1);
10053                                         --sp;
10054
10055                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10056                                                 UNVERIFIED;
10057
10058                                         //g_assert (returnvar != -1);
10059                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10060                                         cfg->ret_var_set = TRUE;
10061                                 }
10062                         } else {
10063                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10064
10065                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10066                                         emit_pop_lmf (cfg);
10067
10068                                 if (cfg->ret) {
10069                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10070
10071                                         if (seq_points && !sym_seq_points) {
10072                                                 /*
10073                                                  * Place a seq point here too even through the IL stack is not
10074                                                  * empty, so a step over on
10075                                                  * call <FOO>
10076                                                  * ret
10077                                                  * will work correctly.
10078                                                  */
10079                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10080                                                 MONO_ADD_INS (cfg->cbb, ins);
10081                                         }
10082
10083                                         g_assert (!return_var);
10084                                         CHECK_STACK (1);
10085                                         --sp;
10086
10087                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10088                                                 UNVERIFIED;
10089
10090                                         emit_setret (cfg, *sp);
10091                                 }
10092                         }
10093                         if (sp != stack_start)
10094                                 UNVERIFIED;
10095                         MONO_INST_NEW (cfg, ins, OP_BR);
10096                         ip++;
10097                         ins->inst_target_bb = end_bblock;
10098                         MONO_ADD_INS (cfg->cbb, ins);
10099                         link_bblock (cfg, cfg->cbb, end_bblock);
10100                         start_new_bblock = 1;
10101                         break;
10102                 case CEE_BR_S:
10103                         CHECK_OPSIZE (2);
10104                         MONO_INST_NEW (cfg, ins, OP_BR);
10105                         ip++;
10106                         target = ip + 1 + (signed char)(*ip);
10107                         ++ip;
10108                         GET_BBLOCK (cfg, tblock, target);
10109                         link_bblock (cfg, cfg->cbb, tblock);
10110                         ins->inst_target_bb = tblock;
10111                         if (sp != stack_start) {
10112                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10113                                 sp = stack_start;
10114                                 CHECK_UNVERIFIABLE (cfg);
10115                         }
10116                         MONO_ADD_INS (cfg->cbb, ins);
10117                         start_new_bblock = 1;
10118                         inline_costs += BRANCH_COST;
10119                         break;
10120                 case CEE_BEQ_S:
10121                 case CEE_BGE_S:
10122                 case CEE_BGT_S:
10123                 case CEE_BLE_S:
10124                 case CEE_BLT_S:
10125                 case CEE_BNE_UN_S:
10126                 case CEE_BGE_UN_S:
10127                 case CEE_BGT_UN_S:
10128                 case CEE_BLE_UN_S:
10129                 case CEE_BLT_UN_S:
10130                         CHECK_OPSIZE (2);
10131                         CHECK_STACK (2);
10132                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10133                         ip++;
10134                         target = ip + 1 + *(signed char*)ip;
10135                         ip++;
10136
10137                         ADD_BINCOND (NULL);
10138
10139                         sp = stack_start;
10140                         inline_costs += BRANCH_COST;
10141                         break;
10142                 case CEE_BR:
10143                         CHECK_OPSIZE (5);
10144                         MONO_INST_NEW (cfg, ins, OP_BR);
10145                         ip++;
10146
10147                         target = ip + 4 + (gint32)read32(ip);
10148                         ip += 4;
10149                         GET_BBLOCK (cfg, tblock, target);
10150                         link_bblock (cfg, cfg->cbb, tblock);
10151                         ins->inst_target_bb = tblock;
10152                         if (sp != stack_start) {
10153                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10154                                 sp = stack_start;
10155                                 CHECK_UNVERIFIABLE (cfg);
10156                         }
10157
10158                         MONO_ADD_INS (cfg->cbb, ins);
10159
10160                         start_new_bblock = 1;
10161                         inline_costs += BRANCH_COST;
10162                         break;
10163                 case CEE_BRFALSE_S:
10164                 case CEE_BRTRUE_S:
10165                 case CEE_BRFALSE:
10166                 case CEE_BRTRUE: {
10167                         MonoInst *cmp;
10168                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10169                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10170                         guint32 opsize = is_short ? 1 : 4;
10171
10172                         CHECK_OPSIZE (opsize);
10173                         CHECK_STACK (1);
10174                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10175                                 UNVERIFIED;
10176                         ip ++;
10177                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10178                         ip += opsize;
10179
10180                         sp--;
10181
10182                         GET_BBLOCK (cfg, tblock, target);
10183                         link_bblock (cfg, cfg->cbb, tblock);
10184                         GET_BBLOCK (cfg, tblock, ip);
10185                         link_bblock (cfg, cfg->cbb, tblock);
10186
10187                         if (sp != stack_start) {
10188                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10189                                 CHECK_UNVERIFIABLE (cfg);
10190                         }
10191
10192                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10193                         cmp->sreg1 = sp [0]->dreg;
10194                         type_from_op (cfg, cmp, sp [0], NULL);
10195                         CHECK_TYPE (cmp);
10196
10197 #if SIZEOF_REGISTER == 4
10198                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10199                                 /* Convert it to OP_LCOMPARE */
10200                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10201                                 ins->type = STACK_I8;
10202                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10203                                 ins->inst_l = 0;
10204                                 MONO_ADD_INS (cfg->cbb, ins);
10205                                 cmp->opcode = OP_LCOMPARE;
10206                                 cmp->sreg2 = ins->dreg;
10207                         }
10208 #endif
10209                         MONO_ADD_INS (cfg->cbb, cmp);
10210
10211                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10212                         type_from_op (cfg, ins, sp [0], NULL);
10213                         MONO_ADD_INS (cfg->cbb, ins);
10214                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10215                         GET_BBLOCK (cfg, tblock, target);
10216                         ins->inst_true_bb = tblock;
10217                         GET_BBLOCK (cfg, tblock, ip);
10218                         ins->inst_false_bb = tblock;
10219                         start_new_bblock = 2;
10220
10221                         sp = stack_start;
10222                         inline_costs += BRANCH_COST;
10223                         break;
10224                 }
10225                 case CEE_BEQ:
10226                 case CEE_BGE:
10227                 case CEE_BGT:
10228                 case CEE_BLE:
10229                 case CEE_BLT:
10230                 case CEE_BNE_UN:
10231                 case CEE_BGE_UN:
10232                 case CEE_BGT_UN:
10233                 case CEE_BLE_UN:
10234                 case CEE_BLT_UN:
10235                         CHECK_OPSIZE (5);
10236                         CHECK_STACK (2);
10237                         MONO_INST_NEW (cfg, ins, *ip);
10238                         ip++;
10239                         target = ip + 4 + (gint32)read32(ip);
10240                         ip += 4;
10241
10242                         ADD_BINCOND (NULL);
10243
10244                         sp = stack_start;
10245                         inline_costs += BRANCH_COST;
10246                         break;
10247                 case CEE_SWITCH: {
10248                         MonoInst *src1;
10249                         MonoBasicBlock **targets;
10250                         MonoBasicBlock *default_bblock;
10251                         MonoJumpInfoBBTable *table;
10252                         int offset_reg = alloc_preg (cfg);
10253                         int target_reg = alloc_preg (cfg);
10254                         int table_reg = alloc_preg (cfg);
10255                         int sum_reg = alloc_preg (cfg);
10256                         gboolean use_op_switch;
10257
10258                         CHECK_OPSIZE (5);
10259                         CHECK_STACK (1);
10260                         n = read32 (ip + 1);
10261                         --sp;
10262                         src1 = sp [0];
10263                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10264                                 UNVERIFIED;
10265
10266                         ip += 5;
10267                         CHECK_OPSIZE (n * sizeof (guint32));
10268                         target = ip + n * sizeof (guint32);
10269
10270                         GET_BBLOCK (cfg, default_bblock, target);
10271                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10272
10273                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10274                         for (i = 0; i < n; ++i) {
10275                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10276                                 targets [i] = tblock;
10277                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10278                                 ip += 4;
10279                         }
10280
10281                         if (sp != stack_start) {
10282                                 /*
10283                                  * Link the current bb with the targets as well, so handle_stack_args
10284                                  * will set their in_stack correctly.
10285                                  */
10286                                 link_bblock (cfg, cfg->cbb, default_bblock);
10287                                 for (i = 0; i < n; ++i)
10288                                         link_bblock (cfg, cfg->cbb, targets [i]);
10289
10290                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10291                                 sp = stack_start;
10292                                 CHECK_UNVERIFIABLE (cfg);
10293
10294                                 /* Undo the links */
10295                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10296                                 for (i = 0; i < n; ++i)
10297                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10298                         }
10299
10300                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10301                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10302
10303                         for (i = 0; i < n; ++i)
10304                                 link_bblock (cfg, cfg->cbb, targets [i]);
10305
10306                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10307                         table->table = targets;
10308                         table->table_size = n;
10309
10310                         use_op_switch = FALSE;
10311 #ifdef TARGET_ARM
10312                         /* ARM implements SWITCH statements differently */
10313                         /* FIXME: Make it use the generic implementation */
10314                         if (!cfg->compile_aot)
10315                                 use_op_switch = TRUE;
10316 #endif
10317
10318                         if (COMPILE_LLVM (cfg))
10319                                 use_op_switch = TRUE;
10320
10321                         cfg->cbb->has_jump_table = 1;
10322
10323                         if (use_op_switch) {
10324                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10325                                 ins->sreg1 = src1->dreg;
10326                                 ins->inst_p0 = table;
10327                                 ins->inst_many_bb = targets;
10328                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10329                                 MONO_ADD_INS (cfg->cbb, ins);
10330                         } else {
10331                                 if (sizeof (gpointer) == 8)
10332                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10333                                 else
10334                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10335
10336 #if SIZEOF_REGISTER == 8
10337                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10338                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10339 #endif
10340
10341                                 if (cfg->compile_aot) {
10342                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10343                                 } else {
10344                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10345                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10346                                         ins->inst_p0 = table;
10347                                         ins->dreg = table_reg;
10348                                         MONO_ADD_INS (cfg->cbb, ins);
10349                                 }
10350
10351                                 /* FIXME: Use load_memindex */
10352                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10353                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10354                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10355                         }
10356                         start_new_bblock = 1;
10357                         inline_costs += (BRANCH_COST * 2);
10358                         break;
10359                 }
10360                 case CEE_LDIND_I1:
10361                 case CEE_LDIND_U1:
10362                 case CEE_LDIND_I2:
10363                 case CEE_LDIND_U2:
10364                 case CEE_LDIND_I4:
10365                 case CEE_LDIND_U4:
10366                 case CEE_LDIND_I8:
10367                 case CEE_LDIND_I:
10368                 case CEE_LDIND_R4:
10369                 case CEE_LDIND_R8:
10370                 case CEE_LDIND_REF:
10371                         CHECK_STACK (1);
10372                         --sp;
10373
10374                         switch (*ip) {
10375                         case CEE_LDIND_R4:
10376                         case CEE_LDIND_R8:
10377                                 dreg = alloc_freg (cfg);
10378                                 break;
10379                         case CEE_LDIND_I8:
10380                                 dreg = alloc_lreg (cfg);
10381                                 break;
10382                         case CEE_LDIND_REF:
10383                                 dreg = alloc_ireg_ref (cfg);
10384                                 break;
10385                         default:
10386                                 dreg = alloc_preg (cfg);
10387                         }
10388
10389                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10390                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10391                         if (*ip == CEE_LDIND_R4)
10392                                 ins->type = cfg->r4_stack_type;
10393                         ins->flags |= ins_flag;
10394                         MONO_ADD_INS (cfg->cbb, ins);
10395                         *sp++ = ins;
10396                         if (ins_flag & MONO_INST_VOLATILE) {
10397                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10398                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10399                         }
10400                         ins_flag = 0;
10401                         ++ip;
10402                         break;
10403                 case CEE_STIND_REF:
10404                 case CEE_STIND_I1:
10405                 case CEE_STIND_I2:
10406                 case CEE_STIND_I4:
10407                 case CEE_STIND_I8:
10408                 case CEE_STIND_R4:
10409                 case CEE_STIND_R8:
10410                 case CEE_STIND_I:
10411                         CHECK_STACK (2);
10412                         sp -= 2;
10413
10414                         if (ins_flag & MONO_INST_VOLATILE) {
10415                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10416                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10417                         }
10418
10419                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10420                         ins->flags |= ins_flag;
10421                         ins_flag = 0;
10422
10423                         MONO_ADD_INS (cfg->cbb, ins);
10424
10425                         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)))
10426                                 emit_write_barrier (cfg, sp [0], sp [1]);
10427
10428                         inline_costs += 1;
10429                         ++ip;
10430                         break;
10431
10432                 case CEE_MUL:
10433                         CHECK_STACK (2);
10434
10435                         MONO_INST_NEW (cfg, ins, (*ip));
10436                         sp -= 2;
10437                         ins->sreg1 = sp [0]->dreg;
10438                         ins->sreg2 = sp [1]->dreg;
10439                         type_from_op (cfg, ins, sp [0], sp [1]);
10440                         CHECK_TYPE (ins);
10441                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10442
10443                         /* Use the immediate opcodes if possible */
10444                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10445                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10446                                 if (imm_opcode != -1) {
10447                                         ins->opcode = imm_opcode;
10448                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10449                                         ins->sreg2 = -1;
10450
10451                                         NULLIFY_INS (sp [1]);
10452                                 }
10453                         }
10454
10455                         MONO_ADD_INS ((cfg)->cbb, (ins));
10456
10457                         *sp++ = mono_decompose_opcode (cfg, ins);
10458                         ip++;
10459                         break;
10460                 case CEE_ADD:
10461                 case CEE_SUB:
10462                 case CEE_DIV:
10463                 case CEE_DIV_UN:
10464                 case CEE_REM:
10465                 case CEE_REM_UN:
10466                 case CEE_AND:
10467                 case CEE_OR:
10468                 case CEE_XOR:
10469                 case CEE_SHL:
10470                 case CEE_SHR:
10471                 case CEE_SHR_UN:
10472                         CHECK_STACK (2);
10473
10474                         MONO_INST_NEW (cfg, ins, (*ip));
10475                         sp -= 2;
10476                         ins->sreg1 = sp [0]->dreg;
10477                         ins->sreg2 = sp [1]->dreg;
10478                         type_from_op (cfg, ins, sp [0], sp [1]);
10479                         CHECK_TYPE (ins);
10480                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10481                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10482
10483                         /* FIXME: Pass opcode to is_inst_imm */
10484
10485                         /* Use the immediate opcodes if possible */
10486                         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)) {
10487                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10488                                 if (imm_opcode != -1) {
10489                                         ins->opcode = imm_opcode;
10490                                         if (sp [1]->opcode == OP_I8CONST) {
10491 #if SIZEOF_REGISTER == 8
10492                                                 ins->inst_imm = sp [1]->inst_l;
10493 #else
10494                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10495                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10496 #endif
10497                                         }
10498                                         else
10499                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10500                                         ins->sreg2 = -1;
10501
10502                                         /* Might be followed by an instruction added by add_widen_op */
10503                                         if (sp [1]->next == NULL)
10504                                                 NULLIFY_INS (sp [1]);
10505                                 }
10506                         }
10507                         MONO_ADD_INS ((cfg)->cbb, (ins));
10508
10509                         *sp++ = mono_decompose_opcode (cfg, ins);
10510                         ip++;
10511                         break;
10512                 case CEE_NEG:
10513                 case CEE_NOT:
10514                 case CEE_CONV_I1:
10515                 case CEE_CONV_I2:
10516                 case CEE_CONV_I4:
10517                 case CEE_CONV_R4:
10518                 case CEE_CONV_R8:
10519                 case CEE_CONV_U4:
10520                 case CEE_CONV_I8:
10521                 case CEE_CONV_U8:
10522                 case CEE_CONV_OVF_I8:
10523                 case CEE_CONV_OVF_U8:
10524                 case CEE_CONV_R_UN:
10525                         CHECK_STACK (1);
10526
10527                         /* Special case this earlier so we have long constants in the IR */
10528                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10529                                 int data = sp [-1]->inst_c0;
10530                                 sp [-1]->opcode = OP_I8CONST;
10531                                 sp [-1]->type = STACK_I8;
10532 #if SIZEOF_REGISTER == 8
10533                                 if ((*ip) == CEE_CONV_U8)
10534                                         sp [-1]->inst_c0 = (guint32)data;
10535                                 else
10536                                         sp [-1]->inst_c0 = data;
10537 #else
10538                                 sp [-1]->inst_ls_word = data;
10539                                 if ((*ip) == CEE_CONV_U8)
10540                                         sp [-1]->inst_ms_word = 0;
10541                                 else
10542                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10543 #endif
10544                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10545                         }
10546                         else {
10547                                 ADD_UNOP (*ip);
10548                         }
10549                         ip++;
10550                         break;
10551                 case CEE_CONV_OVF_I4:
10552                 case CEE_CONV_OVF_I1:
10553                 case CEE_CONV_OVF_I2:
10554                 case CEE_CONV_OVF_I:
10555                 case CEE_CONV_OVF_U:
10556                         CHECK_STACK (1);
10557
10558                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10559                                 ADD_UNOP (CEE_CONV_OVF_I8);
10560                                 ADD_UNOP (*ip);
10561                         } else {
10562                                 ADD_UNOP (*ip);
10563                         }
10564                         ip++;
10565                         break;
10566                 case CEE_CONV_OVF_U1:
10567                 case CEE_CONV_OVF_U2:
10568                 case CEE_CONV_OVF_U4:
10569                         CHECK_STACK (1);
10570
10571                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10572                                 ADD_UNOP (CEE_CONV_OVF_U8);
10573                                 ADD_UNOP (*ip);
10574                         } else {
10575                                 ADD_UNOP (*ip);
10576                         }
10577                         ip++;
10578                         break;
10579                 case CEE_CONV_OVF_I1_UN:
10580                 case CEE_CONV_OVF_I2_UN:
10581                 case CEE_CONV_OVF_I4_UN:
10582                 case CEE_CONV_OVF_I8_UN:
10583                 case CEE_CONV_OVF_U1_UN:
10584                 case CEE_CONV_OVF_U2_UN:
10585                 case CEE_CONV_OVF_U4_UN:
10586                 case CEE_CONV_OVF_U8_UN:
10587                 case CEE_CONV_OVF_I_UN:
10588                 case CEE_CONV_OVF_U_UN:
10589                 case CEE_CONV_U2:
10590                 case CEE_CONV_U1:
10591                 case CEE_CONV_I:
10592                 case CEE_CONV_U:
10593                         CHECK_STACK (1);
10594                         ADD_UNOP (*ip);
10595                         CHECK_CFG_EXCEPTION;
10596                         ip++;
10597                         break;
10598                 case CEE_ADD_OVF:
10599                 case CEE_ADD_OVF_UN:
10600                 case CEE_MUL_OVF:
10601                 case CEE_MUL_OVF_UN:
10602                 case CEE_SUB_OVF:
10603                 case CEE_SUB_OVF_UN:
10604                         CHECK_STACK (2);
10605                         ADD_BINOP (*ip);
10606                         ip++;
10607                         break;
10608                 case CEE_CPOBJ:
10609                         GSHAREDVT_FAILURE (*ip);
10610                         CHECK_OPSIZE (5);
10611                         CHECK_STACK (2);
10612                         token = read32 (ip + 1);
10613                         klass = mini_get_class (method, token, generic_context);
10614                         CHECK_TYPELOAD (klass);
10615                         sp -= 2;
10616                         if (generic_class_is_reference_type (cfg, klass)) {
10617                                 MonoInst *store, *load;
10618                                 int dreg = alloc_ireg_ref (cfg);
10619
10620                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10621                                 load->flags |= ins_flag;
10622                                 MONO_ADD_INS (cfg->cbb, load);
10623
10624                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10625                                 store->flags |= ins_flag;
10626                                 MONO_ADD_INS (cfg->cbb, store);
10627
10628                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10629                                         emit_write_barrier (cfg, sp [0], sp [1]);
10630                         } else {
10631                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10632                         }
10633                         ins_flag = 0;
10634                         ip += 5;
10635                         break;
10636                 case CEE_LDOBJ: {
10637                         int loc_index = -1;
10638                         int stloc_len = 0;
10639
10640                         CHECK_OPSIZE (5);
10641                         CHECK_STACK (1);
10642                         --sp;
10643                         token = read32 (ip + 1);
10644                         klass = mini_get_class (method, token, generic_context);
10645                         CHECK_TYPELOAD (klass);
10646
10647                         /* Optimize the common ldobj+stloc combination */
10648                         switch (ip [5]) {
10649                         case CEE_STLOC_S:
10650                                 loc_index = ip [6];
10651                                 stloc_len = 2;
10652                                 break;
10653                         case CEE_STLOC_0:
10654                         case CEE_STLOC_1:
10655                         case CEE_STLOC_2:
10656                         case CEE_STLOC_3:
10657                                 loc_index = ip [5] - CEE_STLOC_0;
10658                                 stloc_len = 1;
10659                                 break;
10660                         default:
10661                                 break;
10662                         }
10663
10664                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10665                                 CHECK_LOCAL (loc_index);
10666
10667                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10668                                 ins->dreg = cfg->locals [loc_index]->dreg;
10669                                 ins->flags |= ins_flag;
10670                                 ip += 5;
10671                                 ip += stloc_len;
10672                                 if (ins_flag & MONO_INST_VOLATILE) {
10673                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10674                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10675                                 }
10676                                 ins_flag = 0;
10677                                 break;
10678                         }
10679
10680                         /* Optimize the ldobj+stobj combination */
10681                         /* The reference case ends up being a load+store anyway */
10682                         /* Skip this if the operation is volatile. */
10683                         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)) {
10684                                 CHECK_STACK (1);
10685
10686                                 sp --;
10687
10688                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10689
10690                                 ip += 5 + 5;
10691                                 ins_flag = 0;
10692                                 break;
10693                         }
10694
10695                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10696                         ins->flags |= ins_flag;
10697                         *sp++ = ins;
10698
10699                         if (ins_flag & MONO_INST_VOLATILE) {
10700                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10701                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10702                         }
10703
10704                         ip += 5;
10705                         ins_flag = 0;
10706                         inline_costs += 1;
10707                         break;
10708                 }
10709                 case CEE_LDSTR:
10710                         CHECK_STACK_OVF (1);
10711                         CHECK_OPSIZE (5);
10712                         n = read32 (ip + 1);
10713
10714                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10715                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10716                                 ins->type = STACK_OBJ;
10717                                 *sp = ins;
10718                         }
10719                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10720                                 MonoInst *iargs [1];
10721                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10722
10723                                 if (cfg->compile_aot)
10724                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10725                                 else
10726                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10727                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10728                         } else {
10729                                 if (cfg->opt & MONO_OPT_SHARED) {
10730                                         MonoInst *iargs [3];
10731
10732                                         if (cfg->compile_aot) {
10733                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10734                                         }
10735                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10736                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10737                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10738                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10739                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10740                                 } else {
10741                                         if (cfg->cbb->out_of_line) {
10742                                                 MonoInst *iargs [2];
10743
10744                                                 if (image == mono_defaults.corlib) {
10745                                                         /*
10746                                                          * Avoid relocations in AOT and save some space by using a
10747                                                          * version of helper_ldstr specialized to mscorlib.
10748                                                          */
10749                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10750                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10751                                                 } else {
10752                                                         /* Avoid creating the string object */
10753                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10754                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10755                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10756                                                 }
10757                                         }
10758                                         else
10759                                         if (cfg->compile_aot) {
10760                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10761                                                 *sp = ins;
10762                                                 MONO_ADD_INS (cfg->cbb, ins);
10763                                         }
10764                                         else {
10765                                                 NEW_PCONST (cfg, ins, NULL);
10766                                                 ins->type = STACK_OBJ;
10767                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10768                                                 if (!ins->inst_p0)
10769                                                         OUT_OF_MEMORY_FAILURE;
10770
10771                                                 *sp = ins;
10772                                                 MONO_ADD_INS (cfg->cbb, ins);
10773                                         }
10774                                 }
10775                         }
10776
10777                         sp++;
10778                         ip += 5;
10779                         break;
10780                 case CEE_NEWOBJ: {
10781                         MonoInst *iargs [2];
10782                         MonoMethodSignature *fsig;
10783                         MonoInst this_ins;
10784                         MonoInst *alloc;
10785                         MonoInst *vtable_arg = NULL;
10786
10787                         CHECK_OPSIZE (5);
10788                         token = read32 (ip + 1);
10789                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10790                         CHECK_CFG_ERROR;
10791
10792                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10793                         CHECK_CFG_ERROR;
10794
10795                         mono_save_token_info (cfg, image, token, cmethod);
10796
10797                         if (!mono_class_init (cmethod->klass))
10798                                 TYPE_LOAD_ERROR (cmethod->klass);
10799
10800                         context_used = mini_method_check_context_used (cfg, cmethod);
10801
10802                         if (mono_security_core_clr_enabled ())
10803                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10804
10805                         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)) {
10806                                 emit_class_init (cfg, cmethod->klass);
10807                                 CHECK_TYPELOAD (cmethod->klass);
10808                         }
10809
10810                         /*
10811                         if (cfg->gsharedvt) {
10812                                 if (mini_is_gsharedvt_variable_signature (sig))
10813                                         GSHAREDVT_FAILURE (*ip);
10814                         }
10815                         */
10816
10817                         n = fsig->param_count;
10818                         CHECK_STACK (n);
10819
10820                         /*
10821                          * Generate smaller code for the common newobj <exception> instruction in
10822                          * argument checking code.
10823                          */
10824                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10825                                 is_exception_class (cmethod->klass) && n <= 2 &&
10826                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10827                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10828                                 MonoInst *iargs [3];
10829
10830                                 sp -= n;
10831
10832                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10833                                 switch (n) {
10834                                 case 0:
10835                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10836                                         break;
10837                                 case 1:
10838                                         iargs [1] = sp [0];
10839                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10840                                         break;
10841                                 case 2:
10842                                         iargs [1] = sp [0];
10843                                         iargs [2] = sp [1];
10844                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10845                                         break;
10846                                 default:
10847                                         g_assert_not_reached ();
10848                                 }
10849
10850                                 ip += 5;
10851                                 inline_costs += 5;
10852                                 break;
10853                         }
10854
10855                         /* move the args to allow room for 'this' in the first position */
10856                         while (n--) {
10857                                 --sp;
10858                                 sp [1] = sp [0];
10859                         }
10860
10861                         /* check_call_signature () requires sp[0] to be set */
10862                         this_ins.type = STACK_OBJ;
10863                         sp [0] = &this_ins;
10864                         if (check_call_signature (cfg, fsig, sp))
10865                                 UNVERIFIED;
10866
10867                         iargs [0] = NULL;
10868
10869                         if (mini_class_is_system_array (cmethod->klass)) {
10870                                 *sp = emit_get_rgctx_method (cfg, context_used,
10871                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10872
10873                                 /* Avoid varargs in the common case */
10874                                 if (fsig->param_count == 1)
10875                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10876                                 else if (fsig->param_count == 2)
10877                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10878                                 else if (fsig->param_count == 3)
10879                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10880                                 else if (fsig->param_count == 4)
10881                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10882                                 else
10883                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10884                         } else if (cmethod->string_ctor) {
10885                                 g_assert (!context_used);
10886                                 g_assert (!vtable_arg);
10887                                 /* we simply pass a null pointer */
10888                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10889                                 /* now call the string ctor */
10890                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10891                         } else {
10892                                 if (cmethod->klass->valuetype) {
10893                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10894                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10895                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10896
10897                                         alloc = NULL;
10898
10899                                         /*
10900                                          * The code generated by mini_emit_virtual_call () expects
10901                                          * iargs [0] to be a boxed instance, but luckily the vcall
10902                                          * will be transformed into a normal call there.
10903                                          */
10904                                 } else if (context_used) {
10905                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10906                                         *sp = alloc;
10907                                 } else {
10908                                         MonoVTable *vtable = NULL;
10909
10910                                         if (!cfg->compile_aot)
10911                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10912                                         CHECK_TYPELOAD (cmethod->klass);
10913
10914                                         /*
10915                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10916                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10917                                          * As a workaround, we call class cctors before allocating objects.
10918                                          */
10919                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10920                                                 emit_class_init (cfg, cmethod->klass);
10921                                                 if (cfg->verbose_level > 2)
10922                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10923                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10924                                         }
10925
10926                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10927                                         *sp = alloc;
10928                                 }
10929                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10930
10931                                 if (alloc)
10932                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10933
10934                                 /* Now call the actual ctor */
10935                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10936                                 CHECK_CFG_EXCEPTION;
10937                         }
10938
10939                         if (alloc == NULL) {
10940                                 /* Valuetype */
10941                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10942                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10943                                 *sp++= ins;
10944                         } else {
10945                                 *sp++ = alloc;
10946                         }
10947
10948                         ip += 5;
10949                         inline_costs += 5;
10950                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10951                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10952                         break;
10953                 }
10954                 case CEE_CASTCLASS:
10955                         CHECK_STACK (1);
10956                         --sp;
10957                         CHECK_OPSIZE (5);
10958                         token = read32 (ip + 1);
10959                         klass = mini_get_class (method, token, generic_context);
10960                         CHECK_TYPELOAD (klass);
10961                         if (sp [0]->type != STACK_OBJ)
10962                                 UNVERIFIED;
10963
10964                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10965                         CHECK_CFG_EXCEPTION;
10966
10967                         *sp ++ = ins;
10968                         ip += 5;
10969                         break;
10970                 case CEE_ISINST: {
10971                         CHECK_STACK (1);
10972                         --sp;
10973                         CHECK_OPSIZE (5);
10974                         token = read32 (ip + 1);
10975                         klass = mini_get_class (method, token, generic_context);
10976                         CHECK_TYPELOAD (klass);
10977                         if (sp [0]->type != STACK_OBJ)
10978                                 UNVERIFIED;
10979
10980                         context_used = mini_class_check_context_used (cfg, klass);
10981
10982                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10983                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10984                                 MonoInst *args [3];
10985                                 int idx;
10986
10987                                 /* obj */
10988                                 args [0] = *sp;
10989
10990                                 /* klass */
10991                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10992
10993                                 /* inline cache*/
10994                                 idx = get_castclass_cache_idx (cfg);
10995                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
10996
10997                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
10998                                 ip += 5;
10999                                 inline_costs += 2;
11000                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
11001                                 MonoMethod *mono_isinst;
11002                                 MonoInst *iargs [1];
11003                                 int costs;
11004
11005                                 mono_isinst = mono_marshal_get_isinst (klass);
11006                                 iargs [0] = sp [0];
11007
11008                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
11009                                                                            iargs, ip, cfg->real_offset, TRUE);
11010                                 CHECK_CFG_EXCEPTION;
11011                                 g_assert (costs > 0);
11012
11013                                 ip += 5;
11014                                 cfg->real_offset += 5;
11015
11016                                 *sp++= iargs [0];
11017
11018                                 inline_costs += costs;
11019                         }
11020                         else {
11021                                 ins = handle_isinst (cfg, klass, *sp, context_used);
11022                                 CHECK_CFG_EXCEPTION;
11023                                 *sp ++ = ins;
11024                                 ip += 5;
11025                         }
11026                         break;
11027                 }
11028                 case CEE_UNBOX_ANY: {
11029                         MonoInst *res, *addr;
11030
11031                         CHECK_STACK (1);
11032                         --sp;
11033                         CHECK_OPSIZE (5);
11034                         token = read32 (ip + 1);
11035                         klass = mini_get_class (method, token, generic_context);
11036                         CHECK_TYPELOAD (klass);
11037
11038                         mono_save_token_info (cfg, image, token, klass);
11039
11040                         context_used = mini_class_check_context_used (cfg, klass);
11041
11042                         if (mini_is_gsharedvt_klass (klass)) {
11043                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11044                                 inline_costs += 2;
11045                         } else if (generic_class_is_reference_type (cfg, klass)) {
11046                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
11047                                 CHECK_CFG_EXCEPTION;
11048                         } else if (mono_class_is_nullable (klass)) {
11049                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11050                         } else {
11051                                 addr = handle_unbox (cfg, klass, sp, context_used);
11052                                 /* LDOBJ */
11053                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11054                                 res = ins;
11055                                 inline_costs += 2;
11056                         }
11057
11058                         *sp ++ = res;
11059                         ip += 5;
11060                         break;
11061                 }
11062                 case CEE_BOX: {
11063                         MonoInst *val;
11064                         MonoClass *enum_class;
11065                         MonoMethod *has_flag;
11066
11067                         CHECK_STACK (1);
11068                         --sp;
11069                         val = *sp;
11070                         CHECK_OPSIZE (5);
11071                         token = read32 (ip + 1);
11072                         klass = mini_get_class (method, token, generic_context);
11073                         CHECK_TYPELOAD (klass);
11074
11075                         mono_save_token_info (cfg, image, token, klass);
11076
11077                         context_used = mini_class_check_context_used (cfg, klass);
11078
11079                         if (generic_class_is_reference_type (cfg, klass)) {
11080                                 *sp++ = val;
11081                                 ip += 5;
11082                                 break;
11083                         }
11084
11085                         if (klass == mono_defaults.void_class)
11086                                 UNVERIFIED;
11087                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11088                                 UNVERIFIED;
11089                         /* frequent check in generic code: box (struct), brtrue */
11090
11091                         /*
11092                          * Look for:
11093                          *
11094                          *   <push int/long ptr>
11095                          *   <push int/long>
11096                          *   box MyFlags
11097                          *   constrained. MyFlags
11098                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11099                          *
11100                          * If we find this sequence and the operand types on box and constrained
11101                          * are equal, we can emit a specialized instruction sequence instead of
11102                          * the very slow HasFlag () call.
11103                          */
11104                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11105                             /* Cheap checks first. */
11106                             ip + 5 + 6 + 5 < end &&
11107                             ip [5] == CEE_PREFIX1 &&
11108                             ip [6] == CEE_CONSTRAINED_ &&
11109                             ip [11] == CEE_CALLVIRT &&
11110                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11111                             mono_class_is_enum (klass) &&
11112                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11113                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11114                             has_flag->klass == mono_defaults.enum_class &&
11115                             !strcmp (has_flag->name, "HasFlag") &&
11116                             has_flag->signature->hasthis &&
11117                             has_flag->signature->param_count == 1) {
11118                                 CHECK_TYPELOAD (enum_class);
11119
11120                                 if (enum_class == klass) {
11121                                         MonoInst *enum_this, *enum_flag;
11122
11123                                         ip += 5 + 6 + 5;
11124                                         --sp;
11125
11126                                         enum_this = sp [0];
11127                                         enum_flag = sp [1];
11128
11129                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11130                                         break;
11131                                 }
11132                         }
11133
11134                         // FIXME: LLVM can't handle the inconsistent bb linking
11135                         if (!mono_class_is_nullable (klass) &&
11136                                 !mini_is_gsharedvt_klass (klass) &&
11137                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11138                                 (ip [5] == CEE_BRTRUE ||
11139                                  ip [5] == CEE_BRTRUE_S ||
11140                                  ip [5] == CEE_BRFALSE ||
11141                                  ip [5] == CEE_BRFALSE_S)) {
11142                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11143                                 int dreg;
11144                                 MonoBasicBlock *true_bb, *false_bb;
11145
11146                                 ip += 5;
11147
11148                                 if (cfg->verbose_level > 3) {
11149                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11150                                         printf ("<box+brtrue opt>\n");
11151                                 }
11152
11153                                 switch (*ip) {
11154                                 case CEE_BRTRUE_S:
11155                                 case CEE_BRFALSE_S:
11156                                         CHECK_OPSIZE (2);
11157                                         ip++;
11158                                         target = ip + 1 + (signed char)(*ip);
11159                                         ip++;
11160                                         break;
11161                                 case CEE_BRTRUE:
11162                                 case CEE_BRFALSE:
11163                                         CHECK_OPSIZE (5);
11164                                         ip++;
11165                                         target = ip + 4 + (gint)(read32 (ip));
11166                                         ip += 4;
11167                                         break;
11168                                 default:
11169                                         g_assert_not_reached ();
11170                                 }
11171
11172                                 /*
11173                                  * We need to link both bblocks, since it is needed for handling stack
11174                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11175                                  * Branching to only one of them would lead to inconsistencies, so
11176                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11177                                  */
11178                                 GET_BBLOCK (cfg, true_bb, target);
11179                                 GET_BBLOCK (cfg, false_bb, ip);
11180
11181                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11182                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11183
11184                                 if (sp != stack_start) {
11185                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11186                                         sp = stack_start;
11187                                         CHECK_UNVERIFIABLE (cfg);
11188                                 }
11189
11190                                 if (COMPILE_LLVM (cfg)) {
11191                                         dreg = alloc_ireg (cfg);
11192                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11193                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11194
11195                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11196                                 } else {
11197                                         /* The JIT can't eliminate the iconst+compare */
11198                                         MONO_INST_NEW (cfg, ins, OP_BR);
11199                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11200                                         MONO_ADD_INS (cfg->cbb, ins);
11201                                 }
11202
11203                                 start_new_bblock = 1;
11204                                 break;
11205                         }
11206
11207                         *sp++ = handle_box (cfg, val, klass, context_used);
11208
11209                         CHECK_CFG_EXCEPTION;
11210                         ip += 5;
11211                         inline_costs += 1;
11212                         break;
11213                 }
11214                 case CEE_UNBOX: {
11215                         CHECK_STACK (1);
11216                         --sp;
11217                         CHECK_OPSIZE (5);
11218                         token = read32 (ip + 1);
11219                         klass = mini_get_class (method, token, generic_context);
11220                         CHECK_TYPELOAD (klass);
11221
11222                         mono_save_token_info (cfg, image, token, klass);
11223
11224                         context_used = mini_class_check_context_used (cfg, klass);
11225
11226                         if (mono_class_is_nullable (klass)) {
11227                                 MonoInst *val;
11228
11229                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11230                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11231
11232                                 *sp++= ins;
11233                         } else {
11234                                 ins = handle_unbox (cfg, klass, sp, context_used);
11235                                 *sp++ = ins;
11236                         }
11237                         ip += 5;
11238                         inline_costs += 2;
11239                         break;
11240                 }
11241                 case CEE_LDFLD:
11242                 case CEE_LDFLDA:
11243                 case CEE_STFLD:
11244                 case CEE_LDSFLD:
11245                 case CEE_LDSFLDA:
11246                 case CEE_STSFLD: {
11247                         MonoClassField *field;
11248 #ifndef DISABLE_REMOTING
11249                         int costs;
11250 #endif
11251                         guint foffset;
11252                         gboolean is_instance;
11253                         int op;
11254                         gpointer addr = NULL;
11255                         gboolean is_special_static;
11256                         MonoType *ftype;
11257                         MonoInst *store_val = NULL;
11258                         MonoInst *thread_ins;
11259
11260                         op = *ip;
11261                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11262                         if (is_instance) {
11263                                 if (op == CEE_STFLD) {
11264                                         CHECK_STACK (2);
11265                                         sp -= 2;
11266                                         store_val = sp [1];
11267                                 } else {
11268                                         CHECK_STACK (1);
11269                                         --sp;
11270                                 }
11271                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11272                                         UNVERIFIED;
11273                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11274                                         UNVERIFIED;
11275                         } else {
11276                                 if (op == CEE_STSFLD) {
11277                                         CHECK_STACK (1);
11278                                         sp--;
11279                                         store_val = sp [0];
11280                                 }
11281                         }
11282
11283                         CHECK_OPSIZE (5);
11284                         token = read32 (ip + 1);
11285                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11286                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11287                                 klass = field->parent;
11288                         }
11289                         else {
11290                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11291                                 CHECK_CFG_ERROR;
11292                         }
11293                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11294                                 FIELD_ACCESS_FAILURE (method, field);
11295                         mono_class_init (klass);
11296
11297                         /* if the class is Critical then transparent code cannot access it's fields */
11298                         if (!is_instance && mono_security_core_clr_enabled ())
11299                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11300
11301                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11302                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11303                         if (mono_security_core_clr_enabled ())
11304                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11305                         */
11306
11307                         ftype = mono_field_get_type (field);
11308
11309                         /*
11310                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11311                          * the static case.
11312                          */
11313                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11314                                 switch (op) {
11315                                 case CEE_LDFLD:
11316                                         op = CEE_LDSFLD;
11317                                         break;
11318                                 case CEE_STFLD:
11319                                         op = CEE_STSFLD;
11320                                         break;
11321                                 case CEE_LDFLDA:
11322                                         op = CEE_LDSFLDA;
11323                                         break;
11324                                 default:
11325                                         g_assert_not_reached ();
11326                                 }
11327                                 is_instance = FALSE;
11328                         }
11329
11330                         context_used = mini_class_check_context_used (cfg, klass);
11331
11332                         /* INSTANCE CASE */
11333
11334                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11335                         if (op == CEE_STFLD) {
11336                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11337                                         UNVERIFIED;
11338 #ifndef DISABLE_REMOTING
11339                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11340                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11341                                         MonoInst *iargs [5];
11342
11343                                         GSHAREDVT_FAILURE (op);
11344
11345                                         iargs [0] = sp [0];
11346                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11347                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11348                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11349                                                     field->offset);
11350                                         iargs [4] = sp [1];
11351
11352                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11353                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11354                                                                                            iargs, ip, cfg->real_offset, TRUE);
11355                                                 CHECK_CFG_EXCEPTION;
11356                                                 g_assert (costs > 0);
11357
11358                                                 cfg->real_offset += 5;
11359
11360                                                 inline_costs += costs;
11361                                         } else {
11362                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11363                                         }
11364                                 } else
11365 #endif
11366                                 {
11367                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11368
11369                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11370
11371                                         if (mini_is_gsharedvt_klass (klass)) {
11372                                                 MonoInst *offset_ins;
11373
11374                                                 context_used = mini_class_check_context_used (cfg, klass);
11375
11376                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11377                                                 /* The value is offset by 1 */
11378                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11379                                                 dreg = alloc_ireg_mp (cfg);
11380                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11381                                                 wbarrier_ptr_ins = ins;
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                                                 if (mini_is_gsharedvt_klass (klass)) {
11392                                                         g_assert (wbarrier_ptr_ins);
11393                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11394                                                 } else {
11395                                                         /* insert call to write barrier */
11396                                                         MonoInst *ptr;
11397                                                         int dreg;
11398
11399                                                         dreg = alloc_ireg_mp (cfg);
11400                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11401                                                         emit_write_barrier (cfg, ptr, sp [1]);
11402                                                 }
11403                                         }
11404
11405                                         store->flags |= ins_flag;
11406                                 }
11407                                 ins_flag = 0;
11408                                 ip += 5;
11409                                 break;
11410                         }
11411
11412 #ifndef DISABLE_REMOTING
11413                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11414                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11415                                 MonoInst *iargs [4];
11416
11417                                 GSHAREDVT_FAILURE (op);
11418
11419                                 iargs [0] = sp [0];
11420                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11421                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11422                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11423                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11424                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11425                                                                                    iargs, ip, cfg->real_offset, TRUE);
11426                                         CHECK_CFG_EXCEPTION;
11427                                         g_assert (costs > 0);
11428
11429                                         cfg->real_offset += 5;
11430
11431                                         *sp++ = iargs [0];
11432
11433                                         inline_costs += costs;
11434                                 } else {
11435                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11436                                         *sp++ = ins;
11437                                 }
11438                         } else
11439 #endif
11440                         if (is_instance) {
11441                                 if (sp [0]->type == STACK_VTYPE) {
11442                                         MonoInst *var;
11443
11444                                         /* Have to compute the address of the variable */
11445
11446                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11447                                         if (!var)
11448                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11449                                         else
11450                                                 g_assert (var->klass == klass);
11451
11452                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11453                                         sp [0] = ins;
11454                                 }
11455
11456                                 if (op == CEE_LDFLDA) {
11457                                         if (sp [0]->type == STACK_OBJ) {
11458                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11459                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11460                                         }
11461
11462                                         dreg = alloc_ireg_mp (cfg);
11463
11464                                         if (mini_is_gsharedvt_klass (klass)) {
11465                                                 MonoInst *offset_ins;
11466
11467                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11468                                                 /* The value is offset by 1 */
11469                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11470                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11471                                         } else {
11472                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11473                                         }
11474                                         ins->klass = mono_class_from_mono_type (field->type);
11475                                         ins->type = STACK_MP;
11476                                         *sp++ = ins;
11477                                 } else {
11478                                         MonoInst *load;
11479
11480                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11481
11482                                         if (mini_is_gsharedvt_klass (klass)) {
11483                                                 MonoInst *offset_ins;
11484
11485                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11486                                                 /* The value is offset by 1 */
11487                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11488                                                 dreg = alloc_ireg_mp (cfg);
11489                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11490                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11491                                         } else {
11492                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11493                                         }
11494                                         load->flags |= ins_flag;
11495                                         if (sp [0]->opcode != OP_LDADDR)
11496                                                 load->flags |= MONO_INST_FAULT;
11497                                         *sp++ = load;
11498                                 }
11499                         }
11500
11501                         if (is_instance) {
11502                                 ins_flag = 0;
11503                                 ip += 5;
11504                                 break;
11505                         }
11506
11507                         /* STATIC CASE */
11508                         context_used = mini_class_check_context_used (cfg, klass);
11509
11510                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11511                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11512                                 CHECK_CFG_ERROR;
11513                         }
11514
11515                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11516                          * to be called here.
11517                          */
11518                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11519                                 mono_class_vtable (cfg->domain, klass);
11520                                 CHECK_TYPELOAD (klass);
11521                         }
11522                         mono_domain_lock (cfg->domain);
11523                         if (cfg->domain->special_static_fields)
11524                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11525                         mono_domain_unlock (cfg->domain);
11526
11527                         is_special_static = mono_class_field_is_special_static (field);
11528
11529                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11530                                 thread_ins = mono_get_thread_intrinsic (cfg);
11531                         else
11532                                 thread_ins = NULL;
11533
11534                         /* Generate IR to compute the field address */
11535                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11536                                 /*
11537                                  * Fast access to TLS data
11538                                  * Inline version of get_thread_static_data () in
11539                                  * threads.c.
11540                                  */
11541                                 guint32 offset;
11542                                 int idx, static_data_reg, array_reg, dreg;
11543
11544                                 GSHAREDVT_FAILURE (op);
11545
11546                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11547                                 static_data_reg = alloc_ireg (cfg);
11548                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11549
11550                                 if (cfg->compile_aot) {
11551                                         int offset_reg, offset2_reg, idx_reg;
11552
11553                                         /* For TLS variables, this will return the TLS offset */
11554                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11555                                         offset_reg = ins->dreg;
11556                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11557                                         idx_reg = alloc_ireg (cfg);
11558                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11559                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11560                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11561                                         array_reg = alloc_ireg (cfg);
11562                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11563                                         offset2_reg = alloc_ireg (cfg);
11564                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11565                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11566                                         dreg = alloc_ireg (cfg);
11567                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11568                                 } else {
11569                                         offset = (gsize)addr & 0x7fffffff;
11570                                         idx = offset & 0x3f;
11571
11572                                         array_reg = alloc_ireg (cfg);
11573                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11574                                         dreg = alloc_ireg (cfg);
11575                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11576                                 }
11577                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11578                                         (cfg->compile_aot && is_special_static) ||
11579                                         (context_used && is_special_static)) {
11580                                 MonoInst *iargs [2];
11581
11582                                 g_assert (field->parent);
11583                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11584                                 if (context_used) {
11585                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11586                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11587                                 } else {
11588                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11589                                 }
11590                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11591                         } else if (context_used) {
11592                                 MonoInst *static_data;
11593
11594                                 /*
11595                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11596                                         method->klass->name_space, method->klass->name, method->name,
11597                                         depth, field->offset);
11598                                 */
11599
11600                                 if (mono_class_needs_cctor_run (klass, method))
11601                                         emit_class_init (cfg, klass);
11602
11603                                 /*
11604                                  * The pointer we're computing here is
11605                                  *
11606                                  *   super_info.static_data + field->offset
11607                                  */
11608                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11609                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11610
11611                                 if (mini_is_gsharedvt_klass (klass)) {
11612                                         MonoInst *offset_ins;
11613
11614                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11615                                         /* The value is offset by 1 */
11616                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11617                                         dreg = alloc_ireg_mp (cfg);
11618                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11619                                 } else if (field->offset == 0) {
11620                                         ins = static_data;
11621                                 } else {
11622                                         int addr_reg = mono_alloc_preg (cfg);
11623                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11624                                 }
11625                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11626                                 MonoInst *iargs [2];
11627
11628                                 g_assert (field->parent);
11629                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11630                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11631                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11632                         } else {
11633                                 MonoVTable *vtable = NULL;
11634
11635                                 if (!cfg->compile_aot)
11636                                         vtable = mono_class_vtable (cfg->domain, klass);
11637                                 CHECK_TYPELOAD (klass);
11638
11639                                 if (!addr) {
11640                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11641                                                 if (!(g_slist_find (class_inits, klass))) {
11642                                                         emit_class_init (cfg, klass);
11643                                                         if (cfg->verbose_level > 2)
11644                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11645                                                         class_inits = g_slist_prepend (class_inits, klass);
11646                                                 }
11647                                         } else {
11648                                                 if (cfg->run_cctors) {
11649                                                         /* This makes so that inline cannot trigger */
11650                                                         /* .cctors: too many apps depend on them */
11651                                                         /* running with a specific order... */
11652                                                         g_assert (vtable);
11653                                                         if (! vtable->initialized)
11654                                                                 INLINE_FAILURE ("class init");
11655                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11656                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11657                                                                 goto exception_exit;
11658                                                         }
11659                                                 }
11660                                         }
11661                                         if (cfg->compile_aot)
11662                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11663                                         else {
11664                                                 g_assert (vtable);
11665                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11666                                                 g_assert (addr);
11667                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11668                                         }
11669                                 } else {
11670                                         MonoInst *iargs [1];
11671                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11672                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11673                                 }
11674                         }
11675
11676                         /* Generate IR to do the actual load/store operation */
11677
11678                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11679                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11680                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11681                         }
11682
11683                         if (op == CEE_LDSFLDA) {
11684                                 ins->klass = mono_class_from_mono_type (ftype);
11685                                 ins->type = STACK_PTR;
11686                                 *sp++ = ins;
11687                         } else if (op == CEE_STSFLD) {
11688                                 MonoInst *store;
11689
11690                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11691                                 store->flags |= ins_flag;
11692                         } else {
11693                                 gboolean is_const = FALSE;
11694                                 MonoVTable *vtable = NULL;
11695                                 gpointer addr = NULL;
11696
11697                                 if (!context_used) {
11698                                         vtable = mono_class_vtable (cfg->domain, klass);
11699                                         CHECK_TYPELOAD (klass);
11700                                 }
11701                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11702                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11703                                         int ro_type = ftype->type;
11704                                         if (!addr)
11705                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11706                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11707                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11708                                         }
11709
11710                                         GSHAREDVT_FAILURE (op);
11711
11712                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11713                                         is_const = TRUE;
11714                                         switch (ro_type) {
11715                                         case MONO_TYPE_BOOLEAN:
11716                                         case MONO_TYPE_U1:
11717                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11718                                                 sp++;
11719                                                 break;
11720                                         case MONO_TYPE_I1:
11721                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11722                                                 sp++;
11723                                                 break;
11724                                         case MONO_TYPE_CHAR:
11725                                         case MONO_TYPE_U2:
11726                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11727                                                 sp++;
11728                                                 break;
11729                                         case MONO_TYPE_I2:
11730                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11731                                                 sp++;
11732                                                 break;
11733                                                 break;
11734                                         case MONO_TYPE_I4:
11735                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11736                                                 sp++;
11737                                                 break;
11738                                         case MONO_TYPE_U4:
11739                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11740                                                 sp++;
11741                                                 break;
11742                                         case MONO_TYPE_I:
11743                                         case MONO_TYPE_U:
11744                                         case MONO_TYPE_PTR:
11745                                         case MONO_TYPE_FNPTR:
11746                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11747                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11748                                                 sp++;
11749                                                 break;
11750                                         case MONO_TYPE_STRING:
11751                                         case MONO_TYPE_OBJECT:
11752                                         case MONO_TYPE_CLASS:
11753                                         case MONO_TYPE_SZARRAY:
11754                                         case MONO_TYPE_ARRAY:
11755                                                 if (!mono_gc_is_moving ()) {
11756                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11757                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11758                                                         sp++;
11759                                                 } else {
11760                                                         is_const = FALSE;
11761                                                 }
11762                                                 break;
11763                                         case MONO_TYPE_I8:
11764                                         case MONO_TYPE_U8:
11765                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11766                                                 sp++;
11767                                                 break;
11768                                         case MONO_TYPE_R4:
11769                                         case MONO_TYPE_R8:
11770                                         case MONO_TYPE_VALUETYPE:
11771                                         default:
11772                                                 is_const = FALSE;
11773                                                 break;
11774                                         }
11775                                 }
11776
11777                                 if (!is_const) {
11778                                         MonoInst *load;
11779
11780                                         CHECK_STACK_OVF (1);
11781
11782                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11783                                         load->flags |= ins_flag;
11784                                         ins_flag = 0;
11785                                         *sp++ = load;
11786                                 }
11787                         }
11788
11789                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11790                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11791                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11792                         }
11793
11794                         ins_flag = 0;
11795                         ip += 5;
11796                         break;
11797                 }
11798                 case CEE_STOBJ:
11799                         CHECK_STACK (2);
11800                         sp -= 2;
11801                         CHECK_OPSIZE (5);
11802                         token = read32 (ip + 1);
11803                         klass = mini_get_class (method, token, generic_context);
11804                         CHECK_TYPELOAD (klass);
11805                         if (ins_flag & MONO_INST_VOLATILE) {
11806                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11807                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11808                         }
11809                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11810                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11811                         ins->flags |= ins_flag;
11812                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11813                                         generic_class_is_reference_type (cfg, klass)) {
11814                                 /* insert call to write barrier */
11815                                 emit_write_barrier (cfg, sp [0], sp [1]);
11816                         }
11817                         ins_flag = 0;
11818                         ip += 5;
11819                         inline_costs += 1;
11820                         break;
11821
11822                         /*
11823                          * Array opcodes
11824                          */
11825                 case CEE_NEWARR: {
11826                         MonoInst *len_ins;
11827                         const char *data_ptr;
11828                         int data_size = 0;
11829                         guint32 field_token;
11830
11831                         CHECK_STACK (1);
11832                         --sp;
11833
11834                         CHECK_OPSIZE (5);
11835                         token = read32 (ip + 1);
11836
11837                         klass = mini_get_class (method, token, generic_context);
11838                         CHECK_TYPELOAD (klass);
11839
11840                         context_used = mini_class_check_context_used (cfg, klass);
11841
11842                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11843                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11844                                 ins->sreg1 = sp [0]->dreg;
11845                                 ins->type = STACK_I4;
11846                                 ins->dreg = alloc_ireg (cfg);
11847                                 MONO_ADD_INS (cfg->cbb, ins);
11848                                 *sp = mono_decompose_opcode (cfg, ins);
11849                         }
11850
11851                         if (context_used) {
11852                                 MonoInst *args [3];
11853                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11854                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11855
11856                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11857
11858                                 /* vtable */
11859                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11860                                         array_class, MONO_RGCTX_INFO_VTABLE);
11861                                 /* array len */
11862                                 args [1] = sp [0];
11863
11864                                 if (managed_alloc)
11865                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11866                                 else
11867                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11868                         } else {
11869                                 if (cfg->opt & MONO_OPT_SHARED) {
11870                                         /* Decompose now to avoid problems with references to the domainvar */
11871                                         MonoInst *iargs [3];
11872
11873                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11874                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11875                                         iargs [2] = sp [0];
11876
11877                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11878                                 } else {
11879                                         /* Decompose later since it is needed by abcrem */
11880                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11881                                         mono_class_vtable (cfg->domain, array_type);
11882                                         CHECK_TYPELOAD (array_type);
11883
11884                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11885                                         ins->dreg = alloc_ireg_ref (cfg);
11886                                         ins->sreg1 = sp [0]->dreg;
11887                                         ins->inst_newa_class = klass;
11888                                         ins->type = STACK_OBJ;
11889                                         ins->klass = array_type;
11890                                         MONO_ADD_INS (cfg->cbb, ins);
11891                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11892                                         cfg->cbb->has_array_access = TRUE;
11893
11894                                         /* Needed so mono_emit_load_get_addr () gets called */
11895                                         mono_get_got_var (cfg);
11896                                 }
11897                         }
11898
11899                         len_ins = sp [0];
11900                         ip += 5;
11901                         *sp++ = ins;
11902                         inline_costs += 1;
11903
11904                         /*
11905                          * we inline/optimize the initialization sequence if possible.
11906                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11907                          * for small sizes open code the memcpy
11908                          * ensure the rva field is big enough
11909                          */
11910                         if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, cfg->cbb, ip + 6) && (len_ins->opcode == OP_ICONST) && (data_ptr = initialize_array_data (method, cfg->compile_aot, ip, klass, len_ins->inst_c0, &data_size, &field_token))) {
11911                                 MonoMethod *memcpy_method = get_memcpy_method ();
11912                                 MonoInst *iargs [3];
11913                                 int add_reg = alloc_ireg_mp (cfg);
11914
11915                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11916                                 if (cfg->compile_aot) {
11917                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11918                                 } else {
11919                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11920                                 }
11921                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11922                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11923                                 ip += 11;
11924                         }
11925
11926                         break;
11927                 }
11928                 case CEE_LDLEN:
11929                         CHECK_STACK (1);
11930                         --sp;
11931                         if (sp [0]->type != STACK_OBJ)
11932                                 UNVERIFIED;
11933
11934                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11935                         ins->dreg = alloc_preg (cfg);
11936                         ins->sreg1 = sp [0]->dreg;
11937                         ins->type = STACK_I4;
11938                         /* This flag will be inherited by the decomposition */
11939                         ins->flags |= MONO_INST_FAULT;
11940                         MONO_ADD_INS (cfg->cbb, ins);
11941                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11942                         cfg->cbb->has_array_access = TRUE;
11943                         ip ++;
11944                         *sp++ = ins;
11945                         break;
11946                 case CEE_LDELEMA:
11947                         CHECK_STACK (2);
11948                         sp -= 2;
11949                         CHECK_OPSIZE (5);
11950                         if (sp [0]->type != STACK_OBJ)
11951                                 UNVERIFIED;
11952
11953                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11954
11955                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11956                         CHECK_TYPELOAD (klass);
11957                         /* we need to make sure that this array is exactly the type it needs
11958                          * to be for correctness. the wrappers are lax with their usage
11959                          * so we need to ignore them here
11960                          */
11961                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11962                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11963                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11964                                 CHECK_TYPELOAD (array_class);
11965                         }
11966
11967                         readonly = FALSE;
11968                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11969                         *sp++ = ins;
11970                         ip += 5;
11971                         break;
11972                 case CEE_LDELEM:
11973                 case CEE_LDELEM_I1:
11974                 case CEE_LDELEM_U1:
11975                 case CEE_LDELEM_I2:
11976                 case CEE_LDELEM_U2:
11977                 case CEE_LDELEM_I4:
11978                 case CEE_LDELEM_U4:
11979                 case CEE_LDELEM_I8:
11980                 case CEE_LDELEM_I:
11981                 case CEE_LDELEM_R4:
11982                 case CEE_LDELEM_R8:
11983                 case CEE_LDELEM_REF: {
11984                         MonoInst *addr;
11985
11986                         CHECK_STACK (2);
11987                         sp -= 2;
11988
11989                         if (*ip == CEE_LDELEM) {
11990                                 CHECK_OPSIZE (5);
11991                                 token = read32 (ip + 1);
11992                                 klass = mini_get_class (method, token, generic_context);
11993                                 CHECK_TYPELOAD (klass);
11994                                 mono_class_init (klass);
11995                         }
11996                         else
11997                                 klass = array_access_to_klass (*ip);
11998
11999                         if (sp [0]->type != STACK_OBJ)
12000                                 UNVERIFIED;
12001
12002                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12003
12004                         if (mini_is_gsharedvt_variable_klass (klass)) {
12005                                 // FIXME-VT: OP_ICONST optimization
12006                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12007                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12008                                 ins->opcode = OP_LOADV_MEMBASE;
12009                         } else if (sp [1]->opcode == OP_ICONST) {
12010                                 int array_reg = sp [0]->dreg;
12011                                 int index_reg = sp [1]->dreg;
12012                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
12013
12014                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
12015                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12016
12017                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12018                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12019                         } else {
12020                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12021                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12022                         }
12023                         *sp++ = ins;
12024                         if (*ip == CEE_LDELEM)
12025                                 ip += 5;
12026                         else
12027                                 ++ip;
12028                         break;
12029                 }
12030                 case CEE_STELEM_I:
12031                 case CEE_STELEM_I1:
12032                 case CEE_STELEM_I2:
12033                 case CEE_STELEM_I4:
12034                 case CEE_STELEM_I8:
12035                 case CEE_STELEM_R4:
12036                 case CEE_STELEM_R8:
12037                 case CEE_STELEM_REF:
12038                 case CEE_STELEM: {
12039                         CHECK_STACK (3);
12040                         sp -= 3;
12041
12042                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12043
12044                         if (*ip == CEE_STELEM) {
12045                                 CHECK_OPSIZE (5);
12046                                 token = read32 (ip + 1);
12047                                 klass = mini_get_class (method, token, generic_context);
12048                                 CHECK_TYPELOAD (klass);
12049                                 mono_class_init (klass);
12050                         }
12051                         else
12052                                 klass = array_access_to_klass (*ip);
12053
12054                         if (sp [0]->type != STACK_OBJ)
12055                                 UNVERIFIED;
12056
12057                         emit_array_store (cfg, klass, sp, TRUE);
12058
12059                         if (*ip == CEE_STELEM)
12060                                 ip += 5;
12061                         else
12062                                 ++ip;
12063                         inline_costs += 1;
12064                         break;
12065                 }
12066                 case CEE_CKFINITE: {
12067                         CHECK_STACK (1);
12068                         --sp;
12069
12070                         if (cfg->llvm_only) {
12071                                 MonoInst *iargs [1];
12072
12073                                 iargs [0] = sp [0];
12074                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12075                         } else  {
12076                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12077                                 ins->sreg1 = sp [0]->dreg;
12078                                 ins->dreg = alloc_freg (cfg);
12079                                 ins->type = STACK_R8;
12080                                 MONO_ADD_INS (cfg->cbb, ins);
12081
12082                                 *sp++ = mono_decompose_opcode (cfg, ins);
12083                         }
12084
12085                         ++ip;
12086                         break;
12087                 }
12088                 case CEE_REFANYVAL: {
12089                         MonoInst *src_var, *src;
12090
12091                         int klass_reg = alloc_preg (cfg);
12092                         int dreg = alloc_preg (cfg);
12093
12094                         GSHAREDVT_FAILURE (*ip);
12095
12096                         CHECK_STACK (1);
12097                         MONO_INST_NEW (cfg, ins, *ip);
12098                         --sp;
12099                         CHECK_OPSIZE (5);
12100                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12101                         CHECK_TYPELOAD (klass);
12102
12103                         context_used = mini_class_check_context_used (cfg, klass);
12104
12105                         // FIXME:
12106                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12107                         if (!src_var)
12108                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12109                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12110                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12111
12112                         if (context_used) {
12113                                 MonoInst *klass_ins;
12114
12115                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12116                                                 klass, MONO_RGCTX_INFO_KLASS);
12117
12118                                 // FIXME:
12119                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12120                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12121                         } else {
12122                                 mini_emit_class_check (cfg, klass_reg, klass);
12123                         }
12124                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12125                         ins->type = STACK_MP;
12126                         ins->klass = klass;
12127                         *sp++ = ins;
12128                         ip += 5;
12129                         break;
12130                 }
12131                 case CEE_MKREFANY: {
12132                         MonoInst *loc, *addr;
12133
12134                         GSHAREDVT_FAILURE (*ip);
12135
12136                         CHECK_STACK (1);
12137                         MONO_INST_NEW (cfg, ins, *ip);
12138                         --sp;
12139                         CHECK_OPSIZE (5);
12140                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12141                         CHECK_TYPELOAD (klass);
12142
12143                         context_used = mini_class_check_context_used (cfg, klass);
12144
12145                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12146                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12147
12148                         if (context_used) {
12149                                 MonoInst *const_ins;
12150                                 int type_reg = alloc_preg (cfg);
12151
12152                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12153                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12154                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12155                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12156                         } else if (cfg->compile_aot) {
12157                                 int const_reg = alloc_preg (cfg);
12158                                 int type_reg = alloc_preg (cfg);
12159
12160                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12161                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12162                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12163                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12164                         } else {
12165                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12166                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12167                         }
12168                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12169
12170                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12171                         ins->type = STACK_VTYPE;
12172                         ins->klass = mono_defaults.typed_reference_class;
12173                         *sp++ = ins;
12174                         ip += 5;
12175                         break;
12176                 }
12177                 case CEE_LDTOKEN: {
12178                         gpointer handle;
12179                         MonoClass *handle_class;
12180
12181                         CHECK_STACK_OVF (1);
12182
12183                         CHECK_OPSIZE (5);
12184                         n = read32 (ip + 1);
12185
12186                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12187                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12188                                 handle = mono_method_get_wrapper_data (method, n);
12189                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12190                                 if (handle_class == mono_defaults.typehandle_class)
12191                                         handle = &((MonoClass*)handle)->byval_arg;
12192                         }
12193                         else {
12194                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12195                                 CHECK_CFG_ERROR;
12196                         }
12197                         if (!handle)
12198                                 LOAD_ERROR;
12199                         mono_class_init (handle_class);
12200                         if (cfg->gshared) {
12201                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12202                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12203                                         /* This case handles ldtoken
12204                                            of an open type, like for
12205                                            typeof(Gen<>). */
12206                                         context_used = 0;
12207                                 } else if (handle_class == mono_defaults.typehandle_class) {
12208                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12209                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12210                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12211                                 else if (handle_class == mono_defaults.methodhandle_class)
12212                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12213                                 else
12214                                         g_assert_not_reached ();
12215                         }
12216
12217                         if ((cfg->opt & MONO_OPT_SHARED) &&
12218                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12219                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12220                                 MonoInst *addr, *vtvar, *iargs [3];
12221                                 int method_context_used;
12222
12223                                 method_context_used = mini_method_check_context_used (cfg, method);
12224
12225                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12226
12227                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12228                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12229                                 if (method_context_used) {
12230                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12231                                                 method, MONO_RGCTX_INFO_METHOD);
12232                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12233                                 } else {
12234                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12235                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12236                                 }
12237                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12238
12239                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12240
12241                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12242                         } else {
12243                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12244                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12245                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12246                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12247                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12248                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12249
12250                                         mono_class_init (tclass);
12251                                         if (context_used) {
12252                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12253                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12254                                         } else if (cfg->compile_aot) {
12255                                                 if (method->wrapper_type) {
12256                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12257                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12258                                                                 /* Special case for static synchronized wrappers */
12259                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12260                                                         } else {
12261                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12262                                                                 /* FIXME: n is not a normal token */
12263                                                                 DISABLE_AOT (cfg);
12264                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12265                                                         }
12266                                                 } else {
12267                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12268                                                 }
12269                                         } else {
12270                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12271                                                 CHECK_CFG_ERROR;
12272                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12273                                         }
12274                                         ins->type = STACK_OBJ;
12275                                         ins->klass = cmethod->klass;
12276                                         ip += 5;
12277                                 } else {
12278                                         MonoInst *addr, *vtvar;
12279
12280                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12281
12282                                         if (context_used) {
12283                                                 if (handle_class == mono_defaults.typehandle_class) {
12284                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12285                                                                         mono_class_from_mono_type ((MonoType *)handle),
12286                                                                         MONO_RGCTX_INFO_TYPE);
12287                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12288                                                         ins = emit_get_rgctx_method (cfg, context_used,
12289                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12290                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12291                                                         ins = emit_get_rgctx_field (cfg, context_used,
12292                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12293                                                 } else {
12294                                                         g_assert_not_reached ();
12295                                                 }
12296                                         } else if (cfg->compile_aot) {
12297                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12298                                         } else {
12299                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12300                                         }
12301                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12302                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12303                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12304                                 }
12305                         }
12306
12307                         *sp++ = ins;
12308                         ip += 5;
12309                         break;
12310                 }
12311                 case CEE_THROW:
12312                         CHECK_STACK (1);
12313                         MONO_INST_NEW (cfg, ins, OP_THROW);
12314                         --sp;
12315                         ins->sreg1 = sp [0]->dreg;
12316                         ip++;
12317                         cfg->cbb->out_of_line = TRUE;
12318                         MONO_ADD_INS (cfg->cbb, ins);
12319                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12320                         MONO_ADD_INS (cfg->cbb, ins);
12321                         sp = stack_start;
12322
12323                         link_bblock (cfg, cfg->cbb, end_bblock);
12324                         start_new_bblock = 1;
12325                         /* This can complicate code generation for llvm since the return value might not be defined */
12326                         if (COMPILE_LLVM (cfg))
12327                                 INLINE_FAILURE ("throw");
12328                         break;
12329                 case CEE_ENDFINALLY:
12330                         /* mono_save_seq_point_info () depends on this */
12331                         if (sp != stack_start)
12332                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12333                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12334                         MONO_ADD_INS (cfg->cbb, ins);
12335                         ip++;
12336                         start_new_bblock = 1;
12337
12338                         /*
12339                          * Control will leave the method so empty the stack, otherwise
12340                          * the next basic block will start with a nonempty stack.
12341                          */
12342                         while (sp != stack_start) {
12343                                 sp--;
12344                         }
12345                         break;
12346                 case CEE_LEAVE:
12347                 case CEE_LEAVE_S: {
12348                         GList *handlers;
12349
12350                         if (*ip == CEE_LEAVE) {
12351                                 CHECK_OPSIZE (5);
12352                                 target = ip + 5 + (gint32)read32(ip + 1);
12353                         } else {
12354                                 CHECK_OPSIZE (2);
12355                                 target = ip + 2 + (signed char)(ip [1]);
12356                         }
12357
12358                         /* empty the stack */
12359                         while (sp != stack_start) {
12360                                 sp--;
12361                         }
12362
12363                         /*
12364                          * If this leave statement is in a catch block, check for a
12365                          * pending exception, and rethrow it if necessary.
12366                          * We avoid doing this in runtime invoke wrappers, since those are called
12367                          * by native code which excepts the wrapper to catch all exceptions.
12368                          */
12369                         for (i = 0; i < header->num_clauses; ++i) {
12370                                 MonoExceptionClause *clause = &header->clauses [i];
12371
12372                                 /*
12373                                  * Use <= in the final comparison to handle clauses with multiple
12374                                  * leave statements, like in bug #78024.
12375                                  * The ordering of the exception clauses guarantees that we find the
12376                                  * innermost clause.
12377                                  */
12378                                 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && (clause->flags == MONO_EXCEPTION_CLAUSE_NONE) && (ip - header->code + ((*ip == CEE_LEAVE) ? 5 : 2)) <= (clause->handler_offset + clause->handler_len) && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
12379                                         MonoInst *exc_ins;
12380                                         MonoBasicBlock *dont_throw;
12381
12382                                         /*
12383                                           MonoInst *load;
12384
12385                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12386                                         */
12387
12388                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12389
12390                                         NEW_BBLOCK (cfg, dont_throw);
12391
12392                                         /*
12393                                          * Currently, we always rethrow the abort exception, despite the
12394                                          * fact that this is not correct. See thread6.cs for an example.
12395                                          * But propagating the abort exception is more important than
12396                                          * getting the sematics right.
12397                                          */
12398                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12399                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12400                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12401
12402                                         MONO_START_BB (cfg, dont_throw);
12403                                 }
12404                         }
12405
12406 #ifdef ENABLE_LLVM
12407                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12408 #endif
12409
12410                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12411                                 GList *tmp;
12412                                 MonoExceptionClause *clause;
12413
12414                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12415                                         clause = (MonoExceptionClause *)tmp->data;
12416                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12417                                         g_assert (tblock);
12418                                         link_bblock (cfg, cfg->cbb, tblock);
12419                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12420                                         ins->inst_target_bb = tblock;
12421                                         ins->inst_eh_block = clause;
12422                                         MONO_ADD_INS (cfg->cbb, ins);
12423                                         cfg->cbb->has_call_handler = 1;
12424                                         if (COMPILE_LLVM (cfg)) {
12425                                                 MonoBasicBlock *target_bb;
12426
12427                                                 /*
12428                                                  * Link the finally bblock with the target, since it will
12429                                                  * conceptually branch there.
12430                                                  */
12431                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12432                                                 GET_BBLOCK (cfg, target_bb, target);
12433                                                 link_bblock (cfg, tblock, target_bb);
12434                                         }
12435                                 }
12436                                 g_list_free (handlers);
12437                         }
12438
12439                         MONO_INST_NEW (cfg, ins, OP_BR);
12440                         MONO_ADD_INS (cfg->cbb, ins);
12441                         GET_BBLOCK (cfg, tblock, target);
12442                         link_bblock (cfg, cfg->cbb, tblock);
12443                         ins->inst_target_bb = tblock;
12444
12445                         start_new_bblock = 1;
12446
12447                         if (*ip == CEE_LEAVE)
12448                                 ip += 5;
12449                         else
12450                                 ip += 2;
12451
12452                         break;
12453                 }
12454
12455                         /*
12456                          * Mono specific opcodes
12457                          */
12458                 case MONO_CUSTOM_PREFIX: {
12459
12460                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12461
12462                         CHECK_OPSIZE (2);
12463                         switch (ip [1]) {
12464                         case CEE_MONO_ICALL: {
12465                                 gpointer func;
12466                                 MonoJitICallInfo *info;
12467
12468                                 token = read32 (ip + 2);
12469                                 func = mono_method_get_wrapper_data (method, token);
12470                                 info = mono_find_jit_icall_by_addr (func);
12471                                 if (!info)
12472                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12473                                 g_assert (info);
12474
12475                                 CHECK_STACK (info->sig->param_count);
12476                                 sp -= info->sig->param_count;
12477
12478                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12479                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12480                                         *sp++ = ins;
12481
12482                                 ip += 6;
12483                                 inline_costs += 10 * num_calls++;
12484
12485                                 break;
12486                         }
12487                         case CEE_MONO_LDPTR_CARD_TABLE:
12488                         case CEE_MONO_LDPTR_NURSERY_START:
12489                         case CEE_MONO_LDPTR_NURSERY_BITS:
12490                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12491                                 CHECK_STACK_OVF (1);
12492
12493                                 switch (ip [1]) {
12494                                         case CEE_MONO_LDPTR_CARD_TABLE:
12495                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12496                                                 break;
12497                                         case CEE_MONO_LDPTR_NURSERY_START:
12498                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12499                                                 break;
12500                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12501                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12502                                                 break;
12503                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12504                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12505                                                 break;
12506                                 }
12507
12508                                 *sp++ = ins;
12509                                 ip += 2;
12510                                 inline_costs += 10 * num_calls++;
12511                                 break;
12512                         }
12513                         case CEE_MONO_LDPTR: {
12514                                 gpointer ptr;
12515
12516                                 CHECK_STACK_OVF (1);
12517                                 CHECK_OPSIZE (6);
12518                                 token = read32 (ip + 2);
12519
12520                                 ptr = mono_method_get_wrapper_data (method, token);
12521                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12522                                 *sp++ = ins;
12523                                 ip += 6;
12524                                 inline_costs += 10 * num_calls++;
12525                                 /* Can't embed random pointers into AOT code */
12526                                 DISABLE_AOT (cfg);
12527                                 break;
12528                         }
12529                         case CEE_MONO_JIT_ICALL_ADDR: {
12530                                 MonoJitICallInfo *callinfo;
12531                                 gpointer ptr;
12532
12533                                 CHECK_STACK_OVF (1);
12534                                 CHECK_OPSIZE (6);
12535                                 token = read32 (ip + 2);
12536
12537                                 ptr = mono_method_get_wrapper_data (method, token);
12538                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12539                                 g_assert (callinfo);
12540                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12541                                 *sp++ = ins;
12542                                 ip += 6;
12543                                 inline_costs += 10 * num_calls++;
12544                                 break;
12545                         }
12546                         case CEE_MONO_ICALL_ADDR: {
12547                                 MonoMethod *cmethod;
12548                                 gpointer ptr;
12549
12550                                 CHECK_STACK_OVF (1);
12551                                 CHECK_OPSIZE (6);
12552                                 token = read32 (ip + 2);
12553
12554                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12555
12556                                 if (cfg->compile_aot) {
12557                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12558                                 } else {
12559                                         ptr = mono_lookup_internal_call (cmethod);
12560                                         g_assert (ptr);
12561                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12562                                 }
12563                                 *sp++ = ins;
12564                                 ip += 6;
12565                                 break;
12566                         }
12567                         case CEE_MONO_VTADDR: {
12568                                 MonoInst *src_var, *src;
12569
12570                                 CHECK_STACK (1);
12571                                 --sp;
12572
12573                                 // FIXME:
12574                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12575                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12576                                 *sp++ = src;
12577                                 ip += 2;
12578                                 break;
12579                         }
12580                         case CEE_MONO_NEWOBJ: {
12581                                 MonoInst *iargs [2];
12582
12583                                 CHECK_STACK_OVF (1);
12584                                 CHECK_OPSIZE (6);
12585                                 token = read32 (ip + 2);
12586                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12587                                 mono_class_init (klass);
12588                                 NEW_DOMAINCONST (cfg, iargs [0]);
12589                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12590                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12591                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12592                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12593                                 ip += 6;
12594                                 inline_costs += 10 * num_calls++;
12595                                 break;
12596                         }
12597                         case CEE_MONO_OBJADDR:
12598                                 CHECK_STACK (1);
12599                                 --sp;
12600                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12601                                 ins->dreg = alloc_ireg_mp (cfg);
12602                                 ins->sreg1 = sp [0]->dreg;
12603                                 ins->type = STACK_MP;
12604                                 MONO_ADD_INS (cfg->cbb, ins);
12605                                 *sp++ = ins;
12606                                 ip += 2;
12607                                 break;
12608                         case CEE_MONO_LDNATIVEOBJ:
12609                                 /*
12610                                  * Similar to LDOBJ, but instead load the unmanaged
12611                                  * representation of the vtype to the stack.
12612                                  */
12613                                 CHECK_STACK (1);
12614                                 CHECK_OPSIZE (6);
12615                                 --sp;
12616                                 token = read32 (ip + 2);
12617                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12618                                 g_assert (klass->valuetype);
12619                                 mono_class_init (klass);
12620
12621                                 {
12622                                         MonoInst *src, *dest, *temp;
12623
12624                                         src = sp [0];
12625                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12626                                         temp->backend.is_pinvoke = 1;
12627                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12628                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12629
12630                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12631                                         dest->type = STACK_VTYPE;
12632                                         dest->klass = klass;
12633
12634                                         *sp ++ = dest;
12635                                         ip += 6;
12636                                 }
12637                                 break;
12638                         case CEE_MONO_RETOBJ: {
12639                                 /*
12640                                  * Same as RET, but return the native representation of a vtype
12641                                  * to the caller.
12642                                  */
12643                                 g_assert (cfg->ret);
12644                                 g_assert (mono_method_signature (method)->pinvoke);
12645                                 CHECK_STACK (1);
12646                                 --sp;
12647
12648                                 CHECK_OPSIZE (6);
12649                                 token = read32 (ip + 2);
12650                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12651
12652                                 if (!cfg->vret_addr) {
12653                                         g_assert (cfg->ret_var_is_local);
12654
12655                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12656                                 } else {
12657                                         EMIT_NEW_RETLOADA (cfg, ins);
12658                                 }
12659                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12660
12661                                 if (sp != stack_start)
12662                                         UNVERIFIED;
12663
12664                                 MONO_INST_NEW (cfg, ins, OP_BR);
12665                                 ins->inst_target_bb = end_bblock;
12666                                 MONO_ADD_INS (cfg->cbb, ins);
12667                                 link_bblock (cfg, cfg->cbb, end_bblock);
12668                                 start_new_bblock = 1;
12669                                 ip += 6;
12670                                 break;
12671                         }
12672                         case CEE_MONO_CISINST:
12673                         case CEE_MONO_CCASTCLASS: {
12674                                 int token;
12675                                 CHECK_STACK (1);
12676                                 --sp;
12677                                 CHECK_OPSIZE (6);
12678                                 token = read32 (ip + 2);
12679                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12680                                 if (ip [1] == CEE_MONO_CISINST)
12681                                         ins = handle_cisinst (cfg, klass, sp [0]);
12682                                 else
12683                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12684                                 *sp++ = ins;
12685                                 ip += 6;
12686                                 break;
12687                         }
12688                         case CEE_MONO_SAVE_LMF:
12689                         case CEE_MONO_RESTORE_LMF:
12690                                 ip += 2;
12691                                 break;
12692                         case CEE_MONO_CLASSCONST:
12693                                 CHECK_STACK_OVF (1);
12694                                 CHECK_OPSIZE (6);
12695                                 token = read32 (ip + 2);
12696                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12697                                 *sp++ = ins;
12698                                 ip += 6;
12699                                 inline_costs += 10 * num_calls++;
12700                                 break;
12701                         case CEE_MONO_NOT_TAKEN:
12702                                 cfg->cbb->out_of_line = TRUE;
12703                                 ip += 2;
12704                                 break;
12705                         case CEE_MONO_TLS: {
12706                                 MonoTlsKey key;
12707
12708                                 CHECK_STACK_OVF (1);
12709                                 CHECK_OPSIZE (6);
12710                                 key = (MonoTlsKey)read32 (ip + 2);
12711                                 g_assert (key < TLS_KEY_NUM);
12712
12713                                 ins = mono_create_tls_get (cfg, key);
12714                                 if (!ins) {
12715                                         if (cfg->compile_aot) {
12716                                                 DISABLE_AOT (cfg);
12717                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12718                                                 ins->dreg = alloc_preg (cfg);
12719                                                 ins->type = STACK_PTR;
12720                                         } else {
12721                                                 g_assert_not_reached ();
12722                                         }
12723                                 }
12724                                 ins->type = STACK_PTR;
12725                                 MONO_ADD_INS (cfg->cbb, ins);
12726                                 *sp++ = ins;
12727                                 ip += 6;
12728                                 break;
12729                         }
12730                         case CEE_MONO_DYN_CALL: {
12731                                 MonoCallInst *call;
12732
12733                                 /* It would be easier to call a trampoline, but that would put an
12734                                  * extra frame on the stack, confusing exception handling. So
12735                                  * implement it inline using an opcode for now.
12736                                  */
12737
12738                                 if (!cfg->dyn_call_var) {
12739                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12740                                         /* prevent it from being register allocated */
12741                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12742                                 }
12743
12744                                 /* Has to use a call inst since it local regalloc expects it */
12745                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12746                                 ins = (MonoInst*)call;
12747                                 sp -= 2;
12748                                 ins->sreg1 = sp [0]->dreg;
12749                                 ins->sreg2 = sp [1]->dreg;
12750                                 MONO_ADD_INS (cfg->cbb, ins);
12751
12752                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12753
12754                                 ip += 2;
12755                                 inline_costs += 10 * num_calls++;
12756
12757                                 break;
12758                         }
12759                         case CEE_MONO_MEMORY_BARRIER: {
12760                                 CHECK_OPSIZE (6);
12761                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12762                                 ip += 6;
12763                                 break;
12764                         }
12765                         case CEE_MONO_JIT_ATTACH: {
12766                                 MonoInst *args [16], *domain_ins;
12767                                 MonoInst *ad_ins, *jit_tls_ins;
12768                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12769
12770                                 cfg->attach_cookie = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12771                                 cfg->attach_dummy = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12772
12773                                 if (mono_threads_is_coop_enabled ()) {
12774                                         /* AOT code is only used in the root domain */
12775                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12776                                         EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12777                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12778                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12779                                 } else {
12780                                         EMIT_NEW_PCONST (cfg, ins, NULL);
12781                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12782
12783                                         ad_ins = mono_get_domain_intrinsic (cfg);
12784                                         jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12785
12786                                         if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12787                                                 NEW_BBLOCK (cfg, next_bb);
12788                                                 NEW_BBLOCK (cfg, call_bb);
12789
12790                                                 if (cfg->compile_aot) {
12791                                                         /* AOT code is only used in the root domain */
12792                                                         EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12793                                                 } else {
12794                                                         EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12795                                                 }
12796                                                 MONO_ADD_INS (cfg->cbb, ad_ins);
12797                                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12798                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12799
12800                                                 MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12801                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12802                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12803
12804                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12805                                                 MONO_START_BB (cfg, call_bb);
12806                                         }
12807
12808                                         /* AOT code is only used in the root domain */
12809                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12810                                         EMIT_NEW_PCONST (cfg, args [1], NULL);
12811                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12812                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12813
12814                                         if (next_bb)
12815                                                 MONO_START_BB (cfg, next_bb);
12816                                 }
12817
12818                                 ip += 2;
12819                                 break;
12820                         }
12821                         case CEE_MONO_JIT_DETACH: {
12822                                 MonoInst *args [16];
12823
12824                                 /* Restore the original domain */
12825                                 dreg = alloc_ireg (cfg);
12826                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->attach_cookie->dreg);
12827                                 EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12828                                 mono_emit_jit_icall (cfg, mono_jit_thread_detach, args);
12829                                 ip += 2;
12830                                 break;
12831                         }
12832                         case CEE_MONO_CALLI_EXTRA_ARG: {
12833                                 MonoInst *addr;
12834                                 MonoMethodSignature *fsig;
12835                                 MonoInst *arg;
12836
12837                                 /*
12838                                  * This is the same as CEE_CALLI, but passes an additional argument
12839                                  * to the called method in llvmonly mode.
12840                                  * This is only used by delegate invoke wrappers to call the
12841                                  * actual delegate method.
12842                                  */
12843                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12844
12845                                 CHECK_OPSIZE (6);
12846                                 token = read32 (ip + 2);
12847
12848                                 ins = NULL;
12849
12850                                 cmethod = NULL;
12851                                 CHECK_STACK (1);
12852                                 --sp;
12853                                 addr = *sp;
12854                                 fsig = mini_get_signature (method, token, generic_context);
12855
12856                                 if (cfg->llvm_only)
12857                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12858
12859                                 n = fsig->param_count + fsig->hasthis + 1;
12860
12861                                 CHECK_STACK (n);
12862
12863                                 sp -= n;
12864                                 arg = sp [n - 1];
12865
12866                                 if (cfg->llvm_only) {
12867                                         /*
12868                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12869                                          * cconv. This is set by mono_init_delegate ().
12870                                          */
12871                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12872                                                 MonoInst *callee = addr;
12873                                                 MonoInst *call, *localloc_ins;
12874                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12875                                                 int low_bit_reg = alloc_preg (cfg);
12876
12877                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12878                                                 NEW_BBLOCK (cfg, end_bb);
12879
12880                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12881                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12882                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12883
12884                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12885                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12886                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12887                                                 /*
12888                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12889                                                  */
12890                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12891                                                 ins->dreg = alloc_preg (cfg);
12892                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12893                                                 MONO_ADD_INS (cfg->cbb, ins);
12894                                                 localloc_ins = ins;
12895                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12896                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12897                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12898
12899                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12900                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12901
12902                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12903                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12904                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12905                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12906                                                 ins->dreg = call->dreg;
12907
12908                                                 MONO_START_BB (cfg, end_bb);
12909                                         } else {
12910                                                 /* Caller uses a normal calling conv */
12911
12912                                                 MonoInst *callee = addr;
12913                                                 MonoInst *call, *localloc_ins;
12914                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12915                                                 int low_bit_reg = alloc_preg (cfg);
12916
12917                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12918                                                 NEW_BBLOCK (cfg, end_bb);
12919
12920                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12921                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12922                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12923
12924                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12925                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12926                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12927                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12928                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12929                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12930                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12931                                                 MONO_ADD_INS (cfg->cbb, addr);
12932                                                 /*
12933                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12934                                                  */
12935                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12936                                                 ins->dreg = alloc_preg (cfg);
12937                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12938                                                 MONO_ADD_INS (cfg->cbb, ins);
12939                                                 localloc_ins = ins;
12940                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12941                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12942                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12943
12944                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12945                                                 ins->dreg = call->dreg;
12946                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12947
12948                                                 MONO_START_BB (cfg, end_bb);
12949                                         }
12950                                 } else {
12951                                         /* Same as CEE_CALLI */
12952                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12953                                                 /*
12954                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12955                                                  */
12956                                                 MonoInst *callee = addr;
12957
12958                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12959                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12960                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12961                                         } else {
12962                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12963                                         }
12964                                 }
12965
12966                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12967                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12968
12969                                 CHECK_CFG_EXCEPTION;
12970
12971                                 ip += 6;
12972                                 ins_flag = 0;
12973                                 constrained_class = NULL;
12974                                 break;
12975                         }
12976                         default:
12977                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12978                                 break;
12979                         }
12980                         break;
12981                 }
12982
12983                 case CEE_PREFIX1: {
12984                         CHECK_OPSIZE (2);
12985                         switch (ip [1]) {
12986                         case CEE_ARGLIST: {
12987                                 /* somewhat similar to LDTOKEN */
12988                                 MonoInst *addr, *vtvar;
12989                                 CHECK_STACK_OVF (1);
12990                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12991
12992                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12993                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12994
12995                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12996                                 ins->type = STACK_VTYPE;
12997                                 ins->klass = mono_defaults.argumenthandle_class;
12998                                 *sp++ = ins;
12999                                 ip += 2;
13000                                 break;
13001                         }
13002                         case CEE_CEQ:
13003                         case CEE_CGT:
13004                         case CEE_CGT_UN:
13005                         case CEE_CLT:
13006                         case CEE_CLT_UN: {
13007                                 MonoInst *cmp, *arg1, *arg2;
13008
13009                                 CHECK_STACK (2);
13010                                 sp -= 2;
13011                                 arg1 = sp [0];
13012                                 arg2 = sp [1];
13013
13014                                 /*
13015                                  * The following transforms:
13016                                  *    CEE_CEQ    into OP_CEQ
13017                                  *    CEE_CGT    into OP_CGT
13018                                  *    CEE_CGT_UN into OP_CGT_UN
13019                                  *    CEE_CLT    into OP_CLT
13020                                  *    CEE_CLT_UN into OP_CLT_UN
13021                                  */
13022                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13023
13024                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13025                                 cmp->sreg1 = arg1->dreg;
13026                                 cmp->sreg2 = arg2->dreg;
13027                                 type_from_op (cfg, cmp, arg1, arg2);
13028                                 CHECK_TYPE (cmp);
13029                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13030                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13031                                         cmp->opcode = OP_LCOMPARE;
13032                                 else if (arg1->type == STACK_R4)
13033                                         cmp->opcode = OP_RCOMPARE;
13034                                 else if (arg1->type == STACK_R8)
13035                                         cmp->opcode = OP_FCOMPARE;
13036                                 else
13037                                         cmp->opcode = OP_ICOMPARE;
13038                                 MONO_ADD_INS (cfg->cbb, cmp);
13039                                 ins->type = STACK_I4;
13040                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13041                                 type_from_op (cfg, ins, arg1, arg2);
13042
13043                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13044                                         /*
13045                                          * The backends expect the fceq opcodes to do the
13046                                          * comparison too.
13047                                          */
13048                                         ins->sreg1 = cmp->sreg1;
13049                                         ins->sreg2 = cmp->sreg2;
13050                                         NULLIFY_INS (cmp);
13051                                 }
13052                                 MONO_ADD_INS (cfg->cbb, ins);
13053                                 *sp++ = ins;
13054                                 ip += 2;
13055                                 break;
13056                         }
13057                         case CEE_LDFTN: {
13058                                 MonoInst *argconst;
13059                                 MonoMethod *cil_method;
13060
13061                                 CHECK_STACK_OVF (1);
13062                                 CHECK_OPSIZE (6);
13063                                 n = read32 (ip + 2);
13064                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13065                                 CHECK_CFG_ERROR;
13066
13067                                 mono_class_init (cmethod->klass);
13068
13069                                 mono_save_token_info (cfg, image, n, cmethod);
13070
13071                                 context_used = mini_method_check_context_used (cfg, cmethod);
13072
13073                                 cil_method = cmethod;
13074                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13075                                         METHOD_ACCESS_FAILURE (method, cil_method);
13076
13077                                 if (mono_security_core_clr_enabled ())
13078                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13079
13080                                 /*
13081                                  * Optimize the common case of ldftn+delegate creation
13082                                  */
13083                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13084                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13085                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13086                                                 MonoInst *target_ins, *handle_ins;
13087                                                 MonoMethod *invoke;
13088                                                 int invoke_context_used;
13089
13090                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13091                                                 if (!invoke || !mono_method_signature (invoke))
13092                                                         LOAD_ERROR;
13093
13094                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13095
13096                                                 target_ins = sp [-1];
13097
13098                                                 if (mono_security_core_clr_enabled ())
13099                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13100
13101                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13102                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13103                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13104                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13105                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13106                                                         }
13107                                                 }
13108
13109                                                 /* FIXME: SGEN support */
13110                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13111                                                         ip += 6;
13112                                                         if (cfg->verbose_level > 3)
13113                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13114                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13115                                                                 sp --;
13116                                                                 *sp = handle_ins;
13117                                                                 CHECK_CFG_EXCEPTION;
13118                                                                 ip += 5;
13119                                                                 sp ++;
13120                                                                 break;
13121                                                         }
13122                                                         ip -= 6;
13123                                                 }
13124                                         }
13125                                 }
13126
13127                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13128                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13129                                 *sp++ = ins;
13130
13131                                 ip += 6;
13132                                 inline_costs += 10 * num_calls++;
13133                                 break;
13134                         }
13135                         case CEE_LDVIRTFTN: {
13136                                 MonoInst *args [2];
13137
13138                                 CHECK_STACK (1);
13139                                 CHECK_OPSIZE (6);
13140                                 n = read32 (ip + 2);
13141                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13142                                 CHECK_CFG_ERROR;
13143
13144                                 mono_class_init (cmethod->klass);
13145
13146                                 context_used = mini_method_check_context_used (cfg, cmethod);
13147
13148                                 if (mono_security_core_clr_enabled ())
13149                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13150
13151                                 /*
13152                                  * Optimize the common case of ldvirtftn+delegate creation
13153                                  */
13154                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ) && (ip > header->code && ip [-1] == CEE_DUP)) {
13155                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13156                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13157                                                 MonoInst *target_ins, *handle_ins;
13158                                                 MonoMethod *invoke;
13159                                                 int invoke_context_used;
13160                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13161
13162                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13163                                                 if (!invoke || !mono_method_signature (invoke))
13164                                                         LOAD_ERROR;
13165
13166                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13167
13168                                                 target_ins = sp [-1];
13169
13170                                                 if (mono_security_core_clr_enabled ())
13171                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13172
13173                                                 /* FIXME: SGEN support */
13174                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13175                                                         ip += 6;
13176                                                         if (cfg->verbose_level > 3)
13177                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13178                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13179                                                                 sp -= 2;
13180                                                                 *sp = handle_ins;
13181                                                                 CHECK_CFG_EXCEPTION;
13182                                                                 ip += 5;
13183                                                                 sp ++;
13184                                                                 break;
13185                                                         }
13186                                                         ip -= 6;
13187                                                 }
13188                                         }
13189                                 }
13190
13191                                 --sp;
13192                                 args [0] = *sp;
13193
13194                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13195                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13196
13197                                 if (context_used)
13198                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13199                                 else
13200                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13201
13202                                 ip += 6;
13203                                 inline_costs += 10 * num_calls++;
13204                                 break;
13205                         }
13206                         case CEE_LDARG:
13207                                 CHECK_STACK_OVF (1);
13208                                 CHECK_OPSIZE (4);
13209                                 n = read16 (ip + 2);
13210                                 CHECK_ARG (n);
13211                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13212                                 *sp++ = ins;
13213                                 ip += 4;
13214                                 break;
13215                         case CEE_LDARGA:
13216                                 CHECK_STACK_OVF (1);
13217                                 CHECK_OPSIZE (4);
13218                                 n = read16 (ip + 2);
13219                                 CHECK_ARG (n);
13220                                 NEW_ARGLOADA (cfg, ins, n);
13221                                 MONO_ADD_INS (cfg->cbb, ins);
13222                                 *sp++ = ins;
13223                                 ip += 4;
13224                                 break;
13225                         case CEE_STARG:
13226                                 CHECK_STACK (1);
13227                                 --sp;
13228                                 CHECK_OPSIZE (4);
13229                                 n = read16 (ip + 2);
13230                                 CHECK_ARG (n);
13231                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13232                                         UNVERIFIED;
13233                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13234                                 ip += 4;
13235                                 break;
13236                         case CEE_LDLOC:
13237                                 CHECK_STACK_OVF (1);
13238                                 CHECK_OPSIZE (4);
13239                                 n = read16 (ip + 2);
13240                                 CHECK_LOCAL (n);
13241                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13242                                 *sp++ = ins;
13243                                 ip += 4;
13244                                 break;
13245                         case CEE_LDLOCA: {
13246                                 unsigned char *tmp_ip;
13247                                 CHECK_STACK_OVF (1);
13248                                 CHECK_OPSIZE (4);
13249                                 n = read16 (ip + 2);
13250                                 CHECK_LOCAL (n);
13251
13252                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13253                                         ip = tmp_ip;
13254                                         inline_costs += 1;
13255                                         break;
13256                                 }
13257
13258                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13259                                 *sp++ = ins;
13260                                 ip += 4;
13261                                 break;
13262                         }
13263                         case CEE_STLOC:
13264                                 CHECK_STACK (1);
13265                                 --sp;
13266                                 CHECK_OPSIZE (4);
13267                                 n = read16 (ip + 2);
13268                                 CHECK_LOCAL (n);
13269                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13270                                         UNVERIFIED;
13271                                 emit_stloc_ir (cfg, sp, header, n);
13272                                 ip += 4;
13273                                 inline_costs += 1;
13274                                 break;
13275                         case CEE_LOCALLOC:
13276                                 CHECK_STACK (1);
13277                                 --sp;
13278                                 if (sp != stack_start)
13279                                         UNVERIFIED;
13280                                 if (cfg->method != method)
13281                                         /*
13282                                          * Inlining this into a loop in a parent could lead to
13283                                          * stack overflows which is different behavior than the
13284                                          * non-inlined case, thus disable inlining in this case.
13285                                          */
13286                                         INLINE_FAILURE("localloc");
13287
13288                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13289                                 ins->dreg = alloc_preg (cfg);
13290                                 ins->sreg1 = sp [0]->dreg;
13291                                 ins->type = STACK_PTR;
13292                                 MONO_ADD_INS (cfg->cbb, ins);
13293
13294                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13295                                 if (init_locals)
13296                                         ins->flags |= MONO_INST_INIT;
13297
13298                                 *sp++ = ins;
13299                                 ip += 2;
13300                                 break;
13301                         case CEE_ENDFILTER: {
13302                                 MonoExceptionClause *clause, *nearest;
13303                                 int cc;
13304
13305                                 CHECK_STACK (1);
13306                                 --sp;
13307                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13308                                         UNVERIFIED;
13309                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13310                                 ins->sreg1 = (*sp)->dreg;
13311                                 MONO_ADD_INS (cfg->cbb, ins);
13312                                 start_new_bblock = 1;
13313                                 ip += 2;
13314
13315                                 nearest = NULL;
13316                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13317                                         clause = &header->clauses [cc];
13318                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13319                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13320                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13321                                                 nearest = clause;
13322                                 }
13323                                 g_assert (nearest);
13324                                 if ((ip - header->code) != nearest->handler_offset)
13325                                         UNVERIFIED;
13326
13327                                 break;
13328                         }
13329                         case CEE_UNALIGNED_:
13330                                 ins_flag |= MONO_INST_UNALIGNED;
13331                                 /* FIXME: record alignment? we can assume 1 for now */
13332                                 CHECK_OPSIZE (3);
13333                                 ip += 3;
13334                                 break;
13335                         case CEE_VOLATILE_:
13336                                 ins_flag |= MONO_INST_VOLATILE;
13337                                 ip += 2;
13338                                 break;
13339                         case CEE_TAIL_:
13340                                 ins_flag   |= MONO_INST_TAILCALL;
13341                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13342                                 /* Can't inline tail calls at this time */
13343                                 inline_costs += 100000;
13344                                 ip += 2;
13345                                 break;
13346                         case CEE_INITOBJ:
13347                                 CHECK_STACK (1);
13348                                 --sp;
13349                                 CHECK_OPSIZE (6);
13350                                 token = read32 (ip + 2);
13351                                 klass = mini_get_class (method, token, generic_context);
13352                                 CHECK_TYPELOAD (klass);
13353                                 if (generic_class_is_reference_type (cfg, klass))
13354                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13355                                 else
13356                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13357                                 ip += 6;
13358                                 inline_costs += 1;
13359                                 break;
13360                         case CEE_CONSTRAINED_:
13361                                 CHECK_OPSIZE (6);
13362                                 token = read32 (ip + 2);
13363                                 constrained_class = mini_get_class (method, token, generic_context);
13364                                 CHECK_TYPELOAD (constrained_class);
13365                                 ip += 6;
13366                                 break;
13367                         case CEE_CPBLK:
13368                         case CEE_INITBLK: {
13369                                 MonoInst *iargs [3];
13370                                 CHECK_STACK (3);
13371                                 sp -= 3;
13372
13373                                 /* Skip optimized paths for volatile operations. */
13374                                 if ((ip [1] == CEE_CPBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
13375                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13376                                 } else if ((ip [1] == CEE_INITBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5) && (sp [1]->opcode == OP_ICONST) && (sp [1]->inst_c0 == 0)) {
13377                                         /* emit_memset only works when val == 0 */
13378                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13379                                 } else {
13380                                         MonoInst *call;
13381                                         iargs [0] = sp [0];
13382                                         iargs [1] = sp [1];
13383                                         iargs [2] = sp [2];
13384                                         if (ip [1] == CEE_CPBLK) {
13385                                                 /*
13386                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13387                                                  * and release barriers for cpblk. It is technically both a load and
13388                                                  * store operation, so it seems like that's the sensible thing to do.
13389                                                  *
13390                                                  * FIXME: We emit full barriers on both sides of the operation for
13391                                                  * simplicity. We should have a separate atomic memcpy method instead.
13392                                                  */
13393                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13394
13395                                                 if (ins_flag & MONO_INST_VOLATILE)
13396                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13397
13398                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13399                                                 call->flags |= ins_flag;
13400
13401                                                 if (ins_flag & MONO_INST_VOLATILE)
13402                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13403                                         } else {
13404                                                 MonoMethod *memset_method = get_memset_method ();
13405                                                 if (ins_flag & MONO_INST_VOLATILE) {
13406                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13407                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13408                                                 }
13409                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13410                                                 call->flags |= ins_flag;
13411                                         }
13412                                 }
13413                                 ip += 2;
13414                                 ins_flag = 0;
13415                                 inline_costs += 1;
13416                                 break;
13417                         }
13418                         case CEE_NO_:
13419                                 CHECK_OPSIZE (3);
13420                                 if (ip [2] & 0x1)
13421                                         ins_flag |= MONO_INST_NOTYPECHECK;
13422                                 if (ip [2] & 0x2)
13423                                         ins_flag |= MONO_INST_NORANGECHECK;
13424                                 /* we ignore the no-nullcheck for now since we
13425                                  * really do it explicitly only when doing callvirt->call
13426                                  */
13427                                 ip += 3;
13428                                 break;
13429                         case CEE_RETHROW: {
13430                                 MonoInst *load;
13431                                 int handler_offset = -1;
13432
13433                                 for (i = 0; i < header->num_clauses; ++i) {
13434                                         MonoExceptionClause *clause = &header->clauses [i];
13435                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13436                                                 handler_offset = clause->handler_offset;
13437                                                 break;
13438                                         }
13439                                 }
13440
13441                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13442
13443                                 if (handler_offset == -1)
13444                                         UNVERIFIED;
13445
13446                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13447                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13448                                 ins->sreg1 = load->dreg;
13449                                 MONO_ADD_INS (cfg->cbb, ins);
13450
13451                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13452                                 MONO_ADD_INS (cfg->cbb, ins);
13453
13454                                 sp = stack_start;
13455                                 link_bblock (cfg, cfg->cbb, end_bblock);
13456                                 start_new_bblock = 1;
13457                                 ip += 2;
13458                                 break;
13459                         }
13460                         case CEE_SIZEOF: {
13461                                 guint32 val;
13462                                 int ialign;
13463
13464                                 CHECK_STACK_OVF (1);
13465                                 CHECK_OPSIZE (6);
13466                                 token = read32 (ip + 2);
13467                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13468                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13469                                         CHECK_CFG_ERROR;
13470
13471                                         val = mono_type_size (type, &ialign);
13472                                 } else {
13473                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13474                                         CHECK_TYPELOAD (klass);
13475
13476                                         val = mono_type_size (&klass->byval_arg, &ialign);
13477
13478                                         if (mini_is_gsharedvt_klass (klass))
13479                                                 GSHAREDVT_FAILURE (*ip);
13480                                 }
13481                                 EMIT_NEW_ICONST (cfg, ins, val);
13482                                 *sp++= ins;
13483                                 ip += 6;
13484                                 break;
13485                         }
13486                         case CEE_REFANYTYPE: {
13487                                 MonoInst *src_var, *src;
13488
13489                                 GSHAREDVT_FAILURE (*ip);
13490
13491                                 CHECK_STACK (1);
13492                                 --sp;
13493
13494                                 // FIXME:
13495                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13496                                 if (!src_var)
13497                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13498                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13499                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13500                                 *sp++ = ins;
13501                                 ip += 2;
13502                                 break;
13503                         }
13504                         case CEE_READONLY_:
13505                                 readonly = TRUE;
13506                                 ip += 2;
13507                                 break;
13508
13509                         case CEE_UNUSED56:
13510                         case CEE_UNUSED57:
13511                         case CEE_UNUSED70:
13512                         case CEE_UNUSED:
13513                         case CEE_UNUSED99:
13514                                 UNVERIFIED;
13515
13516                         default:
13517                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13518                                 UNVERIFIED;
13519                         }
13520                         break;
13521                 }
13522                 case CEE_UNUSED58:
13523                 case CEE_UNUSED1:
13524                         UNVERIFIED;
13525
13526                 default:
13527                         g_warning ("opcode 0x%02x not handled", *ip);
13528                         UNVERIFIED;
13529                 }
13530         }
13531         if (start_new_bblock != 1)
13532                 UNVERIFIED;
13533
13534         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13535         if (cfg->cbb->next_bb) {
13536                 /* This could already be set because of inlining, #693905 */
13537                 MonoBasicBlock *bb = cfg->cbb;
13538
13539                 while (bb->next_bb)
13540                         bb = bb->next_bb;
13541                 bb->next_bb = end_bblock;
13542         } else {
13543                 cfg->cbb->next_bb = end_bblock;
13544         }
13545
13546         if (cfg->method == method && cfg->domainvar) {
13547                 MonoInst *store;
13548                 MonoInst *get_domain;
13549
13550                 cfg->cbb = init_localsbb;
13551
13552                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13553                         MONO_ADD_INS (cfg->cbb, get_domain);
13554                 } else {
13555                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13556                 }
13557                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13558                 MONO_ADD_INS (cfg->cbb, store);
13559         }
13560
13561 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13562         if (cfg->compile_aot)
13563                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13564                 mono_get_got_var (cfg);
13565 #endif
13566
13567         if (cfg->method == method && cfg->got_var)
13568                 mono_emit_load_got_addr (cfg);
13569
13570         if (init_localsbb) {
13571                 cfg->cbb = init_localsbb;
13572                 cfg->ip = NULL;
13573                 for (i = 0; i < header->num_locals; ++i) {
13574                         emit_init_local (cfg, i, header->locals [i], init_locals);
13575                 }
13576         }
13577
13578         if (cfg->init_ref_vars && cfg->method == method) {
13579                 /* Emit initialization for ref vars */
13580                 // FIXME: Avoid duplication initialization for IL locals.
13581                 for (i = 0; i < cfg->num_varinfo; ++i) {
13582                         MonoInst *ins = cfg->varinfo [i];
13583
13584                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13585                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13586                 }
13587         }
13588
13589         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13590                 cfg->cbb = init_localsbb;
13591                 emit_push_lmf (cfg);
13592         }
13593
13594         cfg->cbb = init_localsbb;
13595         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13596
13597         if (seq_points) {
13598                 MonoBasicBlock *bb;
13599
13600                 /*
13601                  * Make seq points at backward branch targets interruptable.
13602                  */
13603                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13604                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13605                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13606         }
13607
13608         /* Add a sequence point for method entry/exit events */
13609         if (seq_points && cfg->gen_sdb_seq_points) {
13610                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13611                 MONO_ADD_INS (init_localsbb, ins);
13612                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13613                 MONO_ADD_INS (cfg->bb_exit, ins);
13614         }
13615
13616         /*
13617          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13618          * the code they refer to was dead (#11880).
13619          */
13620         if (sym_seq_points) {
13621                 for (i = 0; i < header->code_size; ++i) {
13622                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13623                                 MonoInst *ins;
13624
13625                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13626                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13627                         }
13628                 }
13629         }
13630
13631         cfg->ip = NULL;
13632
13633         if (cfg->method == method) {
13634                 MonoBasicBlock *bb;
13635                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13636                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13637                         if (cfg->spvars)
13638                                 mono_create_spvar_for_region (cfg, bb->region);
13639                         if (cfg->verbose_level > 2)
13640                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13641                 }
13642         } else {
13643                 MonoBasicBlock *bb;
13644                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13645                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13646                         bb->real_offset = inline_offset;
13647                 }
13648         }
13649
13650         if (inline_costs < 0) {
13651                 char *mname;
13652
13653                 /* Method is too large */
13654                 mname = mono_method_full_name (method, TRUE);
13655                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13656                 g_free (mname);
13657         }
13658
13659         if ((cfg->verbose_level > 2) && (cfg->method == method))
13660                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13661
13662         goto cleanup;
13663
13664 mono_error_exit:
13665         g_assert (!mono_error_ok (&cfg->error));
13666         goto cleanup;
13667
13668  exception_exit:
13669         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13670         goto cleanup;
13671
13672  unverified:
13673         set_exception_type_from_invalid_il (cfg, method, ip);
13674         goto cleanup;
13675
13676  cleanup:
13677         g_slist_free (class_inits);
13678         mono_basic_block_free (original_bb);
13679         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13680         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13681         if (cfg->exception_type)
13682                 return -1;
13683         else
13684                 return inline_costs;
13685 }
13686
13687 static int
13688 store_membase_reg_to_store_membase_imm (int opcode)
13689 {
13690         switch (opcode) {
13691         case OP_STORE_MEMBASE_REG:
13692                 return OP_STORE_MEMBASE_IMM;
13693         case OP_STOREI1_MEMBASE_REG:
13694                 return OP_STOREI1_MEMBASE_IMM;
13695         case OP_STOREI2_MEMBASE_REG:
13696                 return OP_STOREI2_MEMBASE_IMM;
13697         case OP_STOREI4_MEMBASE_REG:
13698                 return OP_STOREI4_MEMBASE_IMM;
13699         case OP_STOREI8_MEMBASE_REG:
13700                 return OP_STOREI8_MEMBASE_IMM;
13701         default:
13702                 g_assert_not_reached ();
13703         }
13704
13705         return -1;
13706 }
13707
13708 int
13709 mono_op_to_op_imm (int opcode)
13710 {
13711         switch (opcode) {
13712         case OP_IADD:
13713                 return OP_IADD_IMM;
13714         case OP_ISUB:
13715                 return OP_ISUB_IMM;
13716         case OP_IDIV:
13717                 return OP_IDIV_IMM;
13718         case OP_IDIV_UN:
13719                 return OP_IDIV_UN_IMM;
13720         case OP_IREM:
13721                 return OP_IREM_IMM;
13722         case OP_IREM_UN:
13723                 return OP_IREM_UN_IMM;
13724         case OP_IMUL:
13725                 return OP_IMUL_IMM;
13726         case OP_IAND:
13727                 return OP_IAND_IMM;
13728         case OP_IOR:
13729                 return OP_IOR_IMM;
13730         case OP_IXOR:
13731                 return OP_IXOR_IMM;
13732         case OP_ISHL:
13733                 return OP_ISHL_IMM;
13734         case OP_ISHR:
13735                 return OP_ISHR_IMM;
13736         case OP_ISHR_UN:
13737                 return OP_ISHR_UN_IMM;
13738
13739         case OP_LADD:
13740                 return OP_LADD_IMM;
13741         case OP_LSUB:
13742                 return OP_LSUB_IMM;
13743         case OP_LAND:
13744                 return OP_LAND_IMM;
13745         case OP_LOR:
13746                 return OP_LOR_IMM;
13747         case OP_LXOR:
13748                 return OP_LXOR_IMM;
13749         case OP_LSHL:
13750                 return OP_LSHL_IMM;
13751         case OP_LSHR:
13752                 return OP_LSHR_IMM;
13753         case OP_LSHR_UN:
13754                 return OP_LSHR_UN_IMM;
13755 #if SIZEOF_REGISTER == 8
13756         case OP_LREM:
13757                 return OP_LREM_IMM;
13758 #endif
13759
13760         case OP_COMPARE:
13761                 return OP_COMPARE_IMM;
13762         case OP_ICOMPARE:
13763                 return OP_ICOMPARE_IMM;
13764         case OP_LCOMPARE:
13765                 return OP_LCOMPARE_IMM;
13766
13767         case OP_STORE_MEMBASE_REG:
13768                 return OP_STORE_MEMBASE_IMM;
13769         case OP_STOREI1_MEMBASE_REG:
13770                 return OP_STOREI1_MEMBASE_IMM;
13771         case OP_STOREI2_MEMBASE_REG:
13772                 return OP_STOREI2_MEMBASE_IMM;
13773         case OP_STOREI4_MEMBASE_REG:
13774                 return OP_STOREI4_MEMBASE_IMM;
13775
13776 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13777         case OP_X86_PUSH:
13778                 return OP_X86_PUSH_IMM;
13779         case OP_X86_COMPARE_MEMBASE_REG:
13780                 return OP_X86_COMPARE_MEMBASE_IMM;
13781 #endif
13782 #if defined(TARGET_AMD64)
13783         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13784                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13785 #endif
13786         case OP_VOIDCALL_REG:
13787                 return OP_VOIDCALL;
13788         case OP_CALL_REG:
13789                 return OP_CALL;
13790         case OP_LCALL_REG:
13791                 return OP_LCALL;
13792         case OP_FCALL_REG:
13793                 return OP_FCALL;
13794         case OP_LOCALLOC:
13795                 return OP_LOCALLOC_IMM;
13796         }
13797
13798         return -1;
13799 }
13800
13801 static int
13802 ldind_to_load_membase (int opcode)
13803 {
13804         switch (opcode) {
13805         case CEE_LDIND_I1:
13806                 return OP_LOADI1_MEMBASE;
13807         case CEE_LDIND_U1:
13808                 return OP_LOADU1_MEMBASE;
13809         case CEE_LDIND_I2:
13810                 return OP_LOADI2_MEMBASE;
13811         case CEE_LDIND_U2:
13812                 return OP_LOADU2_MEMBASE;
13813         case CEE_LDIND_I4:
13814                 return OP_LOADI4_MEMBASE;
13815         case CEE_LDIND_U4:
13816                 return OP_LOADU4_MEMBASE;
13817         case CEE_LDIND_I:
13818                 return OP_LOAD_MEMBASE;
13819         case CEE_LDIND_REF:
13820                 return OP_LOAD_MEMBASE;
13821         case CEE_LDIND_I8:
13822                 return OP_LOADI8_MEMBASE;
13823         case CEE_LDIND_R4:
13824                 return OP_LOADR4_MEMBASE;
13825         case CEE_LDIND_R8:
13826                 return OP_LOADR8_MEMBASE;
13827         default:
13828                 g_assert_not_reached ();
13829         }
13830
13831         return -1;
13832 }
13833
13834 static int
13835 stind_to_store_membase (int opcode)
13836 {
13837         switch (opcode) {
13838         case CEE_STIND_I1:
13839                 return OP_STOREI1_MEMBASE_REG;
13840         case CEE_STIND_I2:
13841                 return OP_STOREI2_MEMBASE_REG;
13842         case CEE_STIND_I4:
13843                 return OP_STOREI4_MEMBASE_REG;
13844         case CEE_STIND_I:
13845         case CEE_STIND_REF:
13846                 return OP_STORE_MEMBASE_REG;
13847         case CEE_STIND_I8:
13848                 return OP_STOREI8_MEMBASE_REG;
13849         case CEE_STIND_R4:
13850                 return OP_STORER4_MEMBASE_REG;
13851         case CEE_STIND_R8:
13852                 return OP_STORER8_MEMBASE_REG;
13853         default:
13854                 g_assert_not_reached ();
13855         }
13856
13857         return -1;
13858 }
13859
13860 int
13861 mono_load_membase_to_load_mem (int opcode)
13862 {
13863         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13864 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13865         switch (opcode) {
13866         case OP_LOAD_MEMBASE:
13867                 return OP_LOAD_MEM;
13868         case OP_LOADU1_MEMBASE:
13869                 return OP_LOADU1_MEM;
13870         case OP_LOADU2_MEMBASE:
13871                 return OP_LOADU2_MEM;
13872         case OP_LOADI4_MEMBASE:
13873                 return OP_LOADI4_MEM;
13874         case OP_LOADU4_MEMBASE:
13875                 return OP_LOADU4_MEM;
13876 #if SIZEOF_REGISTER == 8
13877         case OP_LOADI8_MEMBASE:
13878                 return OP_LOADI8_MEM;
13879 #endif
13880         }
13881 #endif
13882
13883         return -1;
13884 }
13885
13886 static inline int
13887 op_to_op_dest_membase (int store_opcode, int opcode)
13888 {
13889 #if defined(TARGET_X86)
13890         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13891                 return -1;
13892
13893         switch (opcode) {
13894         case OP_IADD:
13895                 return OP_X86_ADD_MEMBASE_REG;
13896         case OP_ISUB:
13897                 return OP_X86_SUB_MEMBASE_REG;
13898         case OP_IAND:
13899                 return OP_X86_AND_MEMBASE_REG;
13900         case OP_IOR:
13901                 return OP_X86_OR_MEMBASE_REG;
13902         case OP_IXOR:
13903                 return OP_X86_XOR_MEMBASE_REG;
13904         case OP_ADD_IMM:
13905         case OP_IADD_IMM:
13906                 return OP_X86_ADD_MEMBASE_IMM;
13907         case OP_SUB_IMM:
13908         case OP_ISUB_IMM:
13909                 return OP_X86_SUB_MEMBASE_IMM;
13910         case OP_AND_IMM:
13911         case OP_IAND_IMM:
13912                 return OP_X86_AND_MEMBASE_IMM;
13913         case OP_OR_IMM:
13914         case OP_IOR_IMM:
13915                 return OP_X86_OR_MEMBASE_IMM;
13916         case OP_XOR_IMM:
13917         case OP_IXOR_IMM:
13918                 return OP_X86_XOR_MEMBASE_IMM;
13919         case OP_MOVE:
13920                 return OP_NOP;
13921         }
13922 #endif
13923
13924 #if defined(TARGET_AMD64)
13925         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13926                 return -1;
13927
13928         switch (opcode) {
13929         case OP_IADD:
13930                 return OP_X86_ADD_MEMBASE_REG;
13931         case OP_ISUB:
13932                 return OP_X86_SUB_MEMBASE_REG;
13933         case OP_IAND:
13934                 return OP_X86_AND_MEMBASE_REG;
13935         case OP_IOR:
13936                 return OP_X86_OR_MEMBASE_REG;
13937         case OP_IXOR:
13938                 return OP_X86_XOR_MEMBASE_REG;
13939         case OP_IADD_IMM:
13940                 return OP_X86_ADD_MEMBASE_IMM;
13941         case OP_ISUB_IMM:
13942                 return OP_X86_SUB_MEMBASE_IMM;
13943         case OP_IAND_IMM:
13944                 return OP_X86_AND_MEMBASE_IMM;
13945         case OP_IOR_IMM:
13946                 return OP_X86_OR_MEMBASE_IMM;
13947         case OP_IXOR_IMM:
13948                 return OP_X86_XOR_MEMBASE_IMM;
13949         case OP_LADD:
13950                 return OP_AMD64_ADD_MEMBASE_REG;
13951         case OP_LSUB:
13952                 return OP_AMD64_SUB_MEMBASE_REG;
13953         case OP_LAND:
13954                 return OP_AMD64_AND_MEMBASE_REG;
13955         case OP_LOR:
13956                 return OP_AMD64_OR_MEMBASE_REG;
13957         case OP_LXOR:
13958                 return OP_AMD64_XOR_MEMBASE_REG;
13959         case OP_ADD_IMM:
13960         case OP_LADD_IMM:
13961                 return OP_AMD64_ADD_MEMBASE_IMM;
13962         case OP_SUB_IMM:
13963         case OP_LSUB_IMM:
13964                 return OP_AMD64_SUB_MEMBASE_IMM;
13965         case OP_AND_IMM:
13966         case OP_LAND_IMM:
13967                 return OP_AMD64_AND_MEMBASE_IMM;
13968         case OP_OR_IMM:
13969         case OP_LOR_IMM:
13970                 return OP_AMD64_OR_MEMBASE_IMM;
13971         case OP_XOR_IMM:
13972         case OP_LXOR_IMM:
13973                 return OP_AMD64_XOR_MEMBASE_IMM;
13974         case OP_MOVE:
13975                 return OP_NOP;
13976         }
13977 #endif
13978
13979         return -1;
13980 }
13981
13982 static inline int
13983 op_to_op_store_membase (int store_opcode, int opcode)
13984 {
13985 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13986         switch (opcode) {
13987         case OP_ICEQ:
13988                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13989                         return OP_X86_SETEQ_MEMBASE;
13990         case OP_CNE:
13991                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13992                         return OP_X86_SETNE_MEMBASE;
13993         }
13994 #endif
13995
13996         return -1;
13997 }
13998
13999 static inline int
14000 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
14001 {
14002 #ifdef TARGET_X86
14003         /* FIXME: This has sign extension issues */
14004         /*
14005         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14006                 return OP_X86_COMPARE_MEMBASE8_IMM;
14007         */
14008
14009         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14010                 return -1;
14011
14012         switch (opcode) {
14013         case OP_X86_PUSH:
14014                 return OP_X86_PUSH_MEMBASE;
14015         case OP_COMPARE_IMM:
14016         case OP_ICOMPARE_IMM:
14017                 return OP_X86_COMPARE_MEMBASE_IMM;
14018         case OP_COMPARE:
14019         case OP_ICOMPARE:
14020                 return OP_X86_COMPARE_MEMBASE_REG;
14021         }
14022 #endif
14023
14024 #ifdef TARGET_AMD64
14025         /* FIXME: This has sign extension issues */
14026         /*
14027         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14028                 return OP_X86_COMPARE_MEMBASE8_IMM;
14029         */
14030
14031         switch (opcode) {
14032         case OP_X86_PUSH:
14033                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14034                         return OP_X86_PUSH_MEMBASE;
14035                 break;
14036                 /* FIXME: This only works for 32 bit immediates
14037         case OP_COMPARE_IMM:
14038         case OP_LCOMPARE_IMM:
14039                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14040                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14041                 */
14042         case OP_ICOMPARE_IMM:
14043                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14044                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14045                 break;
14046         case OP_COMPARE:
14047         case OP_LCOMPARE:
14048                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14049                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14050                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14051                         return OP_AMD64_COMPARE_MEMBASE_REG;
14052                 break;
14053         case OP_ICOMPARE:
14054                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14055                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14056                 break;
14057         }
14058 #endif
14059
14060         return -1;
14061 }
14062
14063 static inline int
14064 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14065 {
14066 #ifdef TARGET_X86
14067         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14068                 return -1;
14069
14070         switch (opcode) {
14071         case OP_COMPARE:
14072         case OP_ICOMPARE:
14073                 return OP_X86_COMPARE_REG_MEMBASE;
14074         case OP_IADD:
14075                 return OP_X86_ADD_REG_MEMBASE;
14076         case OP_ISUB:
14077                 return OP_X86_SUB_REG_MEMBASE;
14078         case OP_IAND:
14079                 return OP_X86_AND_REG_MEMBASE;
14080         case OP_IOR:
14081                 return OP_X86_OR_REG_MEMBASE;
14082         case OP_IXOR:
14083                 return OP_X86_XOR_REG_MEMBASE;
14084         }
14085 #endif
14086
14087 #ifdef TARGET_AMD64
14088         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14089                 switch (opcode) {
14090                 case OP_ICOMPARE:
14091                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14092                 case OP_IADD:
14093                         return OP_X86_ADD_REG_MEMBASE;
14094                 case OP_ISUB:
14095                         return OP_X86_SUB_REG_MEMBASE;
14096                 case OP_IAND:
14097                         return OP_X86_AND_REG_MEMBASE;
14098                 case OP_IOR:
14099                         return OP_X86_OR_REG_MEMBASE;
14100                 case OP_IXOR:
14101                         return OP_X86_XOR_REG_MEMBASE;
14102                 }
14103         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14104                 switch (opcode) {
14105                 case OP_COMPARE:
14106                 case OP_LCOMPARE:
14107                         return OP_AMD64_COMPARE_REG_MEMBASE;
14108                 case OP_LADD:
14109                         return OP_AMD64_ADD_REG_MEMBASE;
14110                 case OP_LSUB:
14111                         return OP_AMD64_SUB_REG_MEMBASE;
14112                 case OP_LAND:
14113                         return OP_AMD64_AND_REG_MEMBASE;
14114                 case OP_LOR:
14115                         return OP_AMD64_OR_REG_MEMBASE;
14116                 case OP_LXOR:
14117                         return OP_AMD64_XOR_REG_MEMBASE;
14118                 }
14119         }
14120 #endif
14121
14122         return -1;
14123 }
14124
14125 int
14126 mono_op_to_op_imm_noemul (int opcode)
14127 {
14128         switch (opcode) {
14129 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14130         case OP_LSHR:
14131         case OP_LSHL:
14132         case OP_LSHR_UN:
14133                 return -1;
14134 #endif
14135 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14136         case OP_IDIV:
14137         case OP_IDIV_UN:
14138         case OP_IREM:
14139         case OP_IREM_UN:
14140                 return -1;
14141 #endif
14142 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14143         case OP_IMUL:
14144                 return -1;
14145 #endif
14146         default:
14147                 return mono_op_to_op_imm (opcode);
14148         }
14149 }
14150
14151 /**
14152  * mono_handle_global_vregs:
14153  *
14154  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14155  * for them.
14156  */
14157 void
14158 mono_handle_global_vregs (MonoCompile *cfg)
14159 {
14160         gint32 *vreg_to_bb;
14161         MonoBasicBlock *bb;
14162         int i, pos;
14163
14164         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14165
14166 #ifdef MONO_ARCH_SIMD_INTRINSICS
14167         if (cfg->uses_simd_intrinsics)
14168                 mono_simd_simplify_indirection (cfg);
14169 #endif
14170
14171         /* Find local vregs used in more than one bb */
14172         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14173                 MonoInst *ins = bb->code;
14174                 int block_num = bb->block_num;
14175
14176                 if (cfg->verbose_level > 2)
14177                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14178
14179                 cfg->cbb = bb;
14180                 for (; ins; ins = ins->next) {
14181                         const char *spec = INS_INFO (ins->opcode);
14182                         int regtype = 0, regindex;
14183                         gint32 prev_bb;
14184
14185                         if (G_UNLIKELY (cfg->verbose_level > 2))
14186                                 mono_print_ins (ins);
14187
14188                         g_assert (ins->opcode >= MONO_CEE_LAST);
14189
14190                         for (regindex = 0; regindex < 4; regindex ++) {
14191                                 int vreg = 0;
14192
14193                                 if (regindex == 0) {
14194                                         regtype = spec [MONO_INST_DEST];
14195                                         if (regtype == ' ')
14196                                                 continue;
14197                                         vreg = ins->dreg;
14198                                 } else if (regindex == 1) {
14199                                         regtype = spec [MONO_INST_SRC1];
14200                                         if (regtype == ' ')
14201                                                 continue;
14202                                         vreg = ins->sreg1;
14203                                 } else if (regindex == 2) {
14204                                         regtype = spec [MONO_INST_SRC2];
14205                                         if (regtype == ' ')
14206                                                 continue;
14207                                         vreg = ins->sreg2;
14208                                 } else if (regindex == 3) {
14209                                         regtype = spec [MONO_INST_SRC3];
14210                                         if (regtype == ' ')
14211                                                 continue;
14212                                         vreg = ins->sreg3;
14213                                 }
14214
14215 #if SIZEOF_REGISTER == 4
14216                                 /* In the LLVM case, the long opcodes are not decomposed */
14217                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14218                                         /*
14219                                          * Since some instructions reference the original long vreg,
14220                                          * and some reference the two component vregs, it is quite hard
14221                                          * to determine when it needs to be global. So be conservative.
14222                                          */
14223                                         if (!get_vreg_to_inst (cfg, vreg)) {
14224                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14225
14226                                                 if (cfg->verbose_level > 2)
14227                                                         printf ("LONG VREG R%d made global.\n", vreg);
14228                                         }
14229
14230                                         /*
14231                                          * Make the component vregs volatile since the optimizations can
14232                                          * get confused otherwise.
14233                                          */
14234                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14235                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14236                                 }
14237 #endif
14238
14239                                 g_assert (vreg != -1);
14240
14241                                 prev_bb = vreg_to_bb [vreg];
14242                                 if (prev_bb == 0) {
14243                                         /* 0 is a valid block num */
14244                                         vreg_to_bb [vreg] = block_num + 1;
14245                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14246                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14247                                                 continue;
14248
14249                                         if (!get_vreg_to_inst (cfg, vreg)) {
14250                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14251                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14252
14253                                                 switch (regtype) {
14254                                                 case 'i':
14255                                                         if (vreg_is_ref (cfg, vreg))
14256                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14257                                                         else
14258                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14259                                                         break;
14260                                                 case 'l':
14261                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14262                                                         break;
14263                                                 case 'f':
14264                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14265                                                         break;
14266                                                 case 'v':
14267                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14268                                                         break;
14269                                                 default:
14270                                                         g_assert_not_reached ();
14271                                                 }
14272                                         }
14273
14274                                         /* Flag as having been used in more than one bb */
14275                                         vreg_to_bb [vreg] = -1;
14276                                 }
14277                         }
14278                 }
14279         }
14280
14281         /* If a variable is used in only one bblock, convert it into a local vreg */
14282         for (i = 0; i < cfg->num_varinfo; i++) {
14283                 MonoInst *var = cfg->varinfo [i];
14284                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14285
14286                 switch (var->type) {
14287                 case STACK_I4:
14288                 case STACK_OBJ:
14289                 case STACK_PTR:
14290                 case STACK_MP:
14291                 case STACK_VTYPE:
14292 #if SIZEOF_REGISTER == 8
14293                 case STACK_I8:
14294 #endif
14295 #if !defined(TARGET_X86)
14296                 /* Enabling this screws up the fp stack on x86 */
14297                 case STACK_R8:
14298 #endif
14299                         if (mono_arch_is_soft_float ())
14300                                 break;
14301
14302                         /*
14303                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14304                                 break;
14305                         */
14306
14307                         /* Arguments are implicitly global */
14308                         /* Putting R4 vars into registers doesn't work currently */
14309                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14310                         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) {
14311                                 /*
14312                                  * Make that the variable's liveness interval doesn't contain a call, since
14313                                  * that would cause the lvreg to be spilled, making the whole optimization
14314                                  * useless.
14315                                  */
14316                                 /* This is too slow for JIT compilation */
14317 #if 0
14318                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14319                                         MonoInst *ins;
14320                                         int def_index, call_index, ins_index;
14321                                         gboolean spilled = FALSE;
14322
14323                                         def_index = -1;
14324                                         call_index = -1;
14325                                         ins_index = 0;
14326                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14327                                                 const char *spec = INS_INFO (ins->opcode);
14328
14329                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14330                                                         def_index = ins_index;
14331
14332                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14333                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14334                                                         if (call_index > def_index) {
14335                                                                 spilled = TRUE;
14336                                                                 break;
14337                                                         }
14338                                                 }
14339
14340                                                 if (MONO_IS_CALL (ins))
14341                                                         call_index = ins_index;
14342
14343                                                 ins_index ++;
14344                                         }
14345
14346                                         if (spilled)
14347                                                 break;
14348                                 }
14349 #endif
14350
14351                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14352                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14353                                 var->flags |= MONO_INST_IS_DEAD;
14354                                 cfg->vreg_to_inst [var->dreg] = NULL;
14355                         }
14356                         break;
14357                 }
14358         }
14359
14360         /*
14361          * Compress the varinfo and vars tables so the liveness computation is faster and
14362          * takes up less space.
14363          */
14364         pos = 0;
14365         for (i = 0; i < cfg->num_varinfo; ++i) {
14366                 MonoInst *var = cfg->varinfo [i];
14367                 if (pos < i && cfg->locals_start == i)
14368                         cfg->locals_start = pos;
14369                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14370                         if (pos < i) {
14371                                 cfg->varinfo [pos] = cfg->varinfo [i];
14372                                 cfg->varinfo [pos]->inst_c0 = pos;
14373                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14374                                 cfg->vars [pos].idx = pos;
14375 #if SIZEOF_REGISTER == 4
14376                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14377                                         /* Modify the two component vars too */
14378                                         MonoInst *var1;
14379
14380                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14381                                         var1->inst_c0 = pos;
14382                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14383                                         var1->inst_c0 = pos;
14384                                 }
14385 #endif
14386                         }
14387                         pos ++;
14388                 }
14389         }
14390         cfg->num_varinfo = pos;
14391         if (cfg->locals_start > cfg->num_varinfo)
14392                 cfg->locals_start = cfg->num_varinfo;
14393 }
14394
14395 /*
14396  * mono_allocate_gsharedvt_vars:
14397  *
14398  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14399  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14400  */
14401 void
14402 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14403 {
14404         int i;
14405
14406         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14407
14408         for (i = 0; i < cfg->num_varinfo; ++i) {
14409                 MonoInst *ins = cfg->varinfo [i];
14410                 int idx;
14411
14412                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14413                         if (i >= cfg->locals_start) {
14414                                 /* Local */
14415                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14416                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14417                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14418                                 ins->inst_imm = idx;
14419                         } else {
14420                                 /* Arg */
14421                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14422                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14423                         }
14424                 }
14425         }
14426 }
14427
14428 /**
14429  * mono_spill_global_vars:
14430  *
14431  *   Generate spill code for variables which are not allocated to registers,
14432  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14433  * code is generated which could be optimized by the local optimization passes.
14434  */
14435 void
14436 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14437 {
14438         MonoBasicBlock *bb;
14439         char spec2 [16];
14440         int orig_next_vreg;
14441         guint32 *vreg_to_lvreg;
14442         guint32 *lvregs;
14443         guint32 i, lvregs_len;
14444         gboolean dest_has_lvreg = FALSE;
14445         MonoStackType stacktypes [128];
14446         MonoInst **live_range_start, **live_range_end;
14447         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14448
14449         *need_local_opts = FALSE;
14450
14451         memset (spec2, 0, sizeof (spec2));
14452
14453         /* FIXME: Move this function to mini.c */
14454         stacktypes ['i'] = STACK_PTR;
14455         stacktypes ['l'] = STACK_I8;
14456         stacktypes ['f'] = STACK_R8;
14457 #ifdef MONO_ARCH_SIMD_INTRINSICS
14458         stacktypes ['x'] = STACK_VTYPE;
14459 #endif
14460
14461 #if SIZEOF_REGISTER == 4
14462         /* Create MonoInsts for longs */
14463         for (i = 0; i < cfg->num_varinfo; i++) {
14464                 MonoInst *ins = cfg->varinfo [i];
14465
14466                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14467                         switch (ins->type) {
14468                         case STACK_R8:
14469                         case STACK_I8: {
14470                                 MonoInst *tree;
14471
14472                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14473                                         break;
14474
14475                                 g_assert (ins->opcode == OP_REGOFFSET);
14476
14477                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14478                                 g_assert (tree);
14479                                 tree->opcode = OP_REGOFFSET;
14480                                 tree->inst_basereg = ins->inst_basereg;
14481                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14482
14483                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14484                                 g_assert (tree);
14485                                 tree->opcode = OP_REGOFFSET;
14486                                 tree->inst_basereg = ins->inst_basereg;
14487                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14488                                 break;
14489                         }
14490                         default:
14491                                 break;
14492                         }
14493                 }
14494         }
14495 #endif
14496
14497         if (cfg->compute_gc_maps) {
14498                 /* registers need liveness info even for !non refs */
14499                 for (i = 0; i < cfg->num_varinfo; i++) {
14500                         MonoInst *ins = cfg->varinfo [i];
14501
14502                         if (ins->opcode == OP_REGVAR)
14503                                 ins->flags |= MONO_INST_GC_TRACK;
14504                 }
14505         }
14506
14507         /* FIXME: widening and truncation */
14508
14509         /*
14510          * As an optimization, when a variable allocated to the stack is first loaded into
14511          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14512          * the variable again.
14513          */
14514         orig_next_vreg = cfg->next_vreg;
14515         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14516         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14517         lvregs_len = 0;
14518
14519         /*
14520          * These arrays contain the first and last instructions accessing a given
14521          * variable.
14522          * Since we emit bblocks in the same order we process them here, and we
14523          * don't split live ranges, these will precisely describe the live range of
14524          * the variable, i.e. the instruction range where a valid value can be found
14525          * in the variables location.
14526          * The live range is computed using the liveness info computed by the liveness pass.
14527          * We can't use vmv->range, since that is an abstract live range, and we need
14528          * one which is instruction precise.
14529          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14530          */
14531         /* FIXME: Only do this if debugging info is requested */
14532         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14533         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14534         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14535         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14536
14537         /* Add spill loads/stores */
14538         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14539                 MonoInst *ins;
14540
14541                 if (cfg->verbose_level > 2)
14542                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14543
14544                 /* Clear vreg_to_lvreg array */
14545                 for (i = 0; i < lvregs_len; i++)
14546                         vreg_to_lvreg [lvregs [i]] = 0;
14547                 lvregs_len = 0;
14548
14549                 cfg->cbb = bb;
14550                 MONO_BB_FOR_EACH_INS (bb, ins) {
14551                         const char *spec = INS_INFO (ins->opcode);
14552                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14553                         gboolean store, no_lvreg;
14554                         int sregs [MONO_MAX_SRC_REGS];
14555
14556                         if (G_UNLIKELY (cfg->verbose_level > 2))
14557                                 mono_print_ins (ins);
14558
14559                         if (ins->opcode == OP_NOP)
14560                                 continue;
14561
14562                         /*
14563                          * We handle LDADDR here as well, since it can only be decomposed
14564                          * when variable addresses are known.
14565                          */
14566                         if (ins->opcode == OP_LDADDR) {
14567                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14568
14569                                 if (var->opcode == OP_VTARG_ADDR) {
14570                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14571                                         MonoInst *vtaddr = var->inst_left;
14572                                         if (vtaddr->opcode == OP_REGVAR) {
14573                                                 ins->opcode = OP_MOVE;
14574                                                 ins->sreg1 = vtaddr->dreg;
14575                                         }
14576                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14577                                                 ins->opcode = OP_LOAD_MEMBASE;
14578                                                 ins->inst_basereg = vtaddr->inst_basereg;
14579                                                 ins->inst_offset = vtaddr->inst_offset;
14580                                         } else
14581                                                 NOT_IMPLEMENTED;
14582                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14583                                         /* gsharedvt arg passed by ref */
14584                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14585
14586                                         ins->opcode = OP_LOAD_MEMBASE;
14587                                         ins->inst_basereg = var->inst_basereg;
14588                                         ins->inst_offset = var->inst_offset;
14589                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14590                                         MonoInst *load, *load2, *load3;
14591                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14592                                         int reg1, reg2, reg3;
14593                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14594                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14595
14596                                         /*
14597                                          * gsharedvt local.
14598                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14599                                          */
14600
14601                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14602
14603                                         g_assert (info_var);
14604                                         g_assert (locals_var);
14605
14606                                         /* Mark the instruction used to compute the locals var as used */
14607                                         cfg->gsharedvt_locals_var_ins = NULL;
14608
14609                                         /* Load the offset */
14610                                         if (info_var->opcode == OP_REGOFFSET) {
14611                                                 reg1 = alloc_ireg (cfg);
14612                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14613                                         } else if (info_var->opcode == OP_REGVAR) {
14614                                                 load = NULL;
14615                                                 reg1 = info_var->dreg;
14616                                         } else {
14617                                                 g_assert_not_reached ();
14618                                         }
14619                                         reg2 = alloc_ireg (cfg);
14620                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14621                                         /* Load the locals area address */
14622                                         reg3 = alloc_ireg (cfg);
14623                                         if (locals_var->opcode == OP_REGOFFSET) {
14624                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14625                                         } else if (locals_var->opcode == OP_REGVAR) {
14626                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14627                                         } else {
14628                                                 g_assert_not_reached ();
14629                                         }
14630                                         /* Compute the address */
14631                                         ins->opcode = OP_PADD;
14632                                         ins->sreg1 = reg3;
14633                                         ins->sreg2 = reg2;
14634
14635                                         mono_bblock_insert_before_ins (bb, ins, load3);
14636                                         mono_bblock_insert_before_ins (bb, load3, load2);
14637                                         if (load)
14638                                                 mono_bblock_insert_before_ins (bb, load2, load);
14639                                 } else {
14640                                         g_assert (var->opcode == OP_REGOFFSET);
14641
14642                                         ins->opcode = OP_ADD_IMM;
14643                                         ins->sreg1 = var->inst_basereg;
14644                                         ins->inst_imm = var->inst_offset;
14645                                 }
14646
14647                                 *need_local_opts = TRUE;
14648                                 spec = INS_INFO (ins->opcode);
14649                         }
14650
14651                         if (ins->opcode < MONO_CEE_LAST) {
14652                                 mono_print_ins (ins);
14653                                 g_assert_not_reached ();
14654                         }
14655
14656                         /*
14657                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14658                          * src register.
14659                          * FIXME:
14660                          */
14661                         if (MONO_IS_STORE_MEMBASE (ins)) {
14662                                 tmp_reg = ins->dreg;
14663                                 ins->dreg = ins->sreg2;
14664                                 ins->sreg2 = tmp_reg;
14665                                 store = TRUE;
14666
14667                                 spec2 [MONO_INST_DEST] = ' ';
14668                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14669                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14670                                 spec2 [MONO_INST_SRC3] = ' ';
14671                                 spec = spec2;
14672                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14673                                 g_assert_not_reached ();
14674                         else
14675                                 store = FALSE;
14676                         no_lvreg = FALSE;
14677
14678                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14679                                 printf ("\t %.3s %d", spec, ins->dreg);
14680                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14681                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14682                                         printf (" %d", sregs [srcindex]);
14683                                 printf ("\n");
14684                         }
14685
14686                         /***************/
14687                         /*    DREG     */
14688                         /***************/
14689                         regtype = spec [MONO_INST_DEST];
14690                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14691                         prev_dreg = -1;
14692
14693                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14694                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14695                                 MonoInst *store_ins;
14696                                 int store_opcode;
14697                                 MonoInst *def_ins = ins;
14698                                 int dreg = ins->dreg; /* The original vreg */
14699
14700                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14701
14702                                 if (var->opcode == OP_REGVAR) {
14703                                         ins->dreg = var->dreg;
14704                                 } 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)) {
14705                                         /*
14706                                          * Instead of emitting a load+store, use a _membase opcode.
14707                                          */
14708                                         g_assert (var->opcode == OP_REGOFFSET);
14709                                         if (ins->opcode == OP_MOVE) {
14710                                                 NULLIFY_INS (ins);
14711                                                 def_ins = NULL;
14712                                         } else {
14713                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14714                                                 ins->inst_basereg = var->inst_basereg;
14715                                                 ins->inst_offset = var->inst_offset;
14716                                                 ins->dreg = -1;
14717                                         }
14718                                         spec = INS_INFO (ins->opcode);
14719                                 } else {
14720                                         guint32 lvreg;
14721
14722                                         g_assert (var->opcode == OP_REGOFFSET);
14723
14724                                         prev_dreg = ins->dreg;
14725
14726                                         /* Invalidate any previous lvreg for this vreg */
14727                                         vreg_to_lvreg [ins->dreg] = 0;
14728
14729                                         lvreg = 0;
14730
14731                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14732                                                 regtype = 'l';
14733                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14734                                         }
14735
14736                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14737
14738 #if SIZEOF_REGISTER != 8
14739                                         if (regtype == 'l') {
14740                                                 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));
14741                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14742                                                 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));
14743                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14744                                                 def_ins = store_ins;
14745                                         }
14746                                         else
14747 #endif
14748                                         {
14749                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14750
14751                                                 /* Try to fuse the store into the instruction itself */
14752                                                 /* FIXME: Add more instructions */
14753                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14754                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14755                                                         ins->inst_imm = ins->inst_c0;
14756                                                         ins->inst_destbasereg = var->inst_basereg;
14757                                                         ins->inst_offset = var->inst_offset;
14758                                                         spec = INS_INFO (ins->opcode);
14759                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14760                                                         ins->opcode = store_opcode;
14761                                                         ins->inst_destbasereg = var->inst_basereg;
14762                                                         ins->inst_offset = var->inst_offset;
14763
14764                                                         no_lvreg = TRUE;
14765
14766                                                         tmp_reg = ins->dreg;
14767                                                         ins->dreg = ins->sreg2;
14768                                                         ins->sreg2 = tmp_reg;
14769                                                         store = TRUE;
14770
14771                                                         spec2 [MONO_INST_DEST] = ' ';
14772                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14773                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14774                                                         spec2 [MONO_INST_SRC3] = ' ';
14775                                                         spec = spec2;
14776                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14777                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14778                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14779                                                         ins->dreg = -1;
14780                                                         ins->inst_basereg = var->inst_basereg;
14781                                                         ins->inst_offset = var->inst_offset;
14782                                                         spec = INS_INFO (ins->opcode);
14783                                                 } else {
14784                                                         /* printf ("INS: "); mono_print_ins (ins); */
14785                                                         /* Create a store instruction */
14786                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14787
14788                                                         /* Insert it after the instruction */
14789                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14790
14791                                                         def_ins = store_ins;
14792
14793                                                         /*
14794                                                          * We can't assign ins->dreg to var->dreg here, since the
14795                                                          * sregs could use it. So set a flag, and do it after
14796                                                          * the sregs.
14797                                                          */
14798                                                         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)))
14799                                                                 dest_has_lvreg = TRUE;
14800                                                 }
14801                                         }
14802                                 }
14803
14804                                 if (def_ins && !live_range_start [dreg]) {
14805                                         live_range_start [dreg] = def_ins;
14806                                         live_range_start_bb [dreg] = bb;
14807                                 }
14808
14809                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14810                                         MonoInst *tmp;
14811
14812                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14813                                         tmp->inst_c1 = dreg;
14814                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14815                                 }
14816                         }
14817
14818                         /************/
14819                         /*  SREGS   */
14820                         /************/
14821                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14822                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14823                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14824                                 sreg = sregs [srcindex];
14825
14826                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14827                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14828                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14829                                         MonoInst *use_ins = ins;
14830                                         MonoInst *load_ins;
14831                                         guint32 load_opcode;
14832
14833                                         if (var->opcode == OP_REGVAR) {
14834                                                 sregs [srcindex] = var->dreg;
14835                                                 //mono_inst_set_src_registers (ins, sregs);
14836                                                 live_range_end [sreg] = use_ins;
14837                                                 live_range_end_bb [sreg] = bb;
14838
14839                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14840                                                         MonoInst *tmp;
14841
14842                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14843                                                         /* var->dreg is a hreg */
14844                                                         tmp->inst_c1 = sreg;
14845                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14846                                                 }
14847
14848                                                 continue;
14849                                         }
14850
14851                                         g_assert (var->opcode == OP_REGOFFSET);
14852
14853                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14854
14855                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14856
14857                                         if (vreg_to_lvreg [sreg]) {
14858                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14859
14860                                                 /* The variable is already loaded to an lvreg */
14861                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14862                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14863                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14864                                                 //mono_inst_set_src_registers (ins, sregs);
14865                                                 continue;
14866                                         }
14867
14868                                         /* Try to fuse the load into the instruction */
14869                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14870                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14871                                                 sregs [0] = var->inst_basereg;
14872                                                 //mono_inst_set_src_registers (ins, sregs);
14873                                                 ins->inst_offset = var->inst_offset;
14874                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14875                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14876                                                 sregs [1] = var->inst_basereg;
14877                                                 //mono_inst_set_src_registers (ins, sregs);
14878                                                 ins->inst_offset = var->inst_offset;
14879                                         } else {
14880                                                 if (MONO_IS_REAL_MOVE (ins)) {
14881                                                         ins->opcode = OP_NOP;
14882                                                         sreg = ins->dreg;
14883                                                 } else {
14884                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14885
14886                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14887
14888                                                         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) {
14889                                                                 if (var->dreg == prev_dreg) {
14890                                                                         /*
14891                                                                          * sreg refers to the value loaded by the load
14892                                                                          * emitted below, but we need to use ins->dreg
14893                                                                          * since it refers to the store emitted earlier.
14894                                                                          */
14895                                                                         sreg = ins->dreg;
14896                                                                 }
14897                                                                 g_assert (sreg != -1);
14898                                                                 vreg_to_lvreg [var->dreg] = sreg;
14899                                                                 g_assert (lvregs_len < 1024);
14900                                                                 lvregs [lvregs_len ++] = var->dreg;
14901                                                         }
14902                                                 }
14903
14904                                                 sregs [srcindex] = sreg;
14905                                                 //mono_inst_set_src_registers (ins, sregs);
14906
14907 #if SIZEOF_REGISTER != 8
14908                                                 if (regtype == 'l') {
14909                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14910                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14911                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14912                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14913                                                         use_ins = load_ins;
14914                                                 }
14915                                                 else
14916 #endif
14917                                                 {
14918 #if SIZEOF_REGISTER == 4
14919                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14920 #endif
14921                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14922                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14923                                                         use_ins = load_ins;
14924                                                 }
14925                                         }
14926
14927                                         if (var->dreg < orig_next_vreg) {
14928                                                 live_range_end [var->dreg] = use_ins;
14929                                                 live_range_end_bb [var->dreg] = bb;
14930                                         }
14931
14932                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14933                                                 MonoInst *tmp;
14934
14935                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14936                                                 tmp->inst_c1 = var->dreg;
14937                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14938                                         }
14939                                 }
14940                         }
14941                         mono_inst_set_src_registers (ins, sregs);
14942
14943                         if (dest_has_lvreg) {
14944                                 g_assert (ins->dreg != -1);
14945                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14946                                 g_assert (lvregs_len < 1024);
14947                                 lvregs [lvregs_len ++] = prev_dreg;
14948                                 dest_has_lvreg = FALSE;
14949                         }
14950
14951                         if (store) {
14952                                 tmp_reg = ins->dreg;
14953                                 ins->dreg = ins->sreg2;
14954                                 ins->sreg2 = tmp_reg;
14955                         }
14956
14957                         if (MONO_IS_CALL (ins)) {
14958                                 /* Clear vreg_to_lvreg array */
14959                                 for (i = 0; i < lvregs_len; i++)
14960                                         vreg_to_lvreg [lvregs [i]] = 0;
14961                                 lvregs_len = 0;
14962                         } else if (ins->opcode == OP_NOP) {
14963                                 ins->dreg = -1;
14964                                 MONO_INST_NULLIFY_SREGS (ins);
14965                         }
14966
14967                         if (cfg->verbose_level > 2)
14968                                 mono_print_ins_index (1, ins);
14969                 }
14970
14971                 /* Extend the live range based on the liveness info */
14972                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14973                         for (i = 0; i < cfg->num_varinfo; i ++) {
14974                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14975
14976                                 if (vreg_is_volatile (cfg, vi->vreg))
14977                                         /* The liveness info is incomplete */
14978                                         continue;
14979
14980                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14981                                         /* Live from at least the first ins of this bb */
14982                                         live_range_start [vi->vreg] = bb->code;
14983                                         live_range_start_bb [vi->vreg] = bb;
14984                                 }
14985
14986                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14987                                         /* Live at least until the last ins of this bb */
14988                                         live_range_end [vi->vreg] = bb->last_ins;
14989                                         live_range_end_bb [vi->vreg] = bb;
14990                                 }
14991                         }
14992                 }
14993         }
14994
14995         /*
14996          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14997          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14998          */
14999         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
15000                 for (i = 0; i < cfg->num_varinfo; ++i) {
15001                         int vreg = MONO_VARINFO (cfg, i)->vreg;
15002                         MonoInst *ins;
15003
15004                         if (live_range_start [vreg]) {
15005                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
15006                                 ins->inst_c0 = i;
15007                                 ins->inst_c1 = vreg;
15008                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
15009                         }
15010                         if (live_range_end [vreg]) {
15011                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15012                                 ins->inst_c0 = i;
15013                                 ins->inst_c1 = vreg;
15014                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15015                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15016                                 else
15017                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15018                         }
15019                 }
15020         }
15021
15022         if (cfg->gsharedvt_locals_var_ins) {
15023                 /* Nullify if unused */
15024                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15025                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15026         }
15027
15028         g_free (live_range_start);
15029         g_free (live_range_end);
15030         g_free (live_range_start_bb);
15031         g_free (live_range_end_bb);
15032 }
15033
15034 /**
15035  * FIXME:
15036  * - use 'iadd' instead of 'int_add'
15037  * - handling ovf opcodes: decompose in method_to_ir.
15038  * - unify iregs/fregs
15039  *   -> partly done, the missing parts are:
15040  *   - a more complete unification would involve unifying the hregs as well, so
15041  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15042  *     would no longer map to the machine hregs, so the code generators would need to
15043  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15044  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15045  *     fp/non-fp branches speeds it up by about 15%.
15046  * - use sext/zext opcodes instead of shifts
15047  * - add OP_ICALL
15048  * - get rid of TEMPLOADs if possible and use vregs instead
15049  * - clean up usage of OP_P/OP_ opcodes
15050  * - cleanup usage of DUMMY_USE
15051  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15052  *   stack
15053  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15054  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15055  * - make sure handle_stack_args () is called before the branch is emitted
15056  * - when the new IR is done, get rid of all unused stuff
15057  * - COMPARE/BEQ as separate instructions or unify them ?
15058  *   - keeping them separate allows specialized compare instructions like
15059  *     compare_imm, compare_membase
15060  *   - most back ends unify fp compare+branch, fp compare+ceq
15061  * - integrate mono_save_args into inline_method
15062  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15063  * - handle long shift opts on 32 bit platforms somehow: they require
15064  *   3 sregs (2 for arg1 and 1 for arg2)
15065  * - make byref a 'normal' type.
15066  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15067  *   variable if needed.
15068  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15069  *   like inline_method.
15070  * - remove inlining restrictions
15071  * - fix LNEG and enable cfold of INEG
15072  * - generalize x86 optimizations like ldelema as a peephole optimization
15073  * - add store_mem_imm for amd64
15074  * - optimize the loading of the interruption flag in the managed->native wrappers
15075  * - avoid special handling of OP_NOP in passes
15076  * - move code inserting instructions into one function/macro.
15077  * - try a coalescing phase after liveness analysis
15078  * - add float -> vreg conversion + local optimizations on !x86
15079  * - figure out how to handle decomposed branches during optimizations, ie.
15080  *   compare+branch, op_jump_table+op_br etc.
15081  * - promote RuntimeXHandles to vregs
15082  * - vtype cleanups:
15083  *   - add a NEW_VARLOADA_VREG macro
15084  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15085  *   accessing vtype fields.
15086  * - get rid of I8CONST on 64 bit platforms
15087  * - dealing with the increase in code size due to branches created during opcode
15088  *   decomposition:
15089  *   - use extended basic blocks
15090  *     - all parts of the JIT
15091  *     - handle_global_vregs () && local regalloc
15092  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15093  * - sources of increase in code size:
15094  *   - vtypes
15095  *   - long compares
15096  *   - isinst and castclass
15097  *   - lvregs not allocated to global registers even if used multiple times
15098  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15099  *   meaningful.
15100  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15101  * - add all micro optimizations from the old JIT
15102  * - put tree optimizations into the deadce pass
15103  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15104  *   specific function.
15105  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15106  *   fcompare + branchCC.
15107  * - create a helper function for allocating a stack slot, taking into account
15108  *   MONO_CFG_HAS_SPILLUP.
15109  * - merge r68207.
15110  * - merge the ia64 switch changes.
15111  * - optimize mono_regstate2_alloc_int/float.
15112  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15113  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15114  *   parts of the tree could be separated by other instructions, killing the tree
15115  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15116  *   instructions if the result of the load is used multiple times ?
15117  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15118  * - LAST MERGE: 108395.
15119  * - when returning vtypes in registers, generate IR and append it to the end of the
15120  *   last bb instead of doing it in the epilog.
15121  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15122  */
15123
15124 /*
15125
15126 NOTES
15127 -----
15128
15129 - When to decompose opcodes:
15130   - earlier: this makes some optimizations hard to implement, since the low level IR
15131   no longer contains the neccessary information. But it is easier to do.
15132   - later: harder to implement, enables more optimizations.
15133 - Branches inside bblocks:
15134   - created when decomposing complex opcodes.
15135     - branches to another bblock: harmless, but not tracked by the branch
15136       optimizations, so need to branch to a label at the start of the bblock.
15137     - branches to inside the same bblock: very problematic, trips up the local
15138       reg allocator. Can be fixed by spitting the current bblock, but that is a
15139       complex operation, since some local vregs can become global vregs etc.
15140 - Local/global vregs:
15141   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15142     local register allocator.
15143   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15144     structure, created by mono_create_var (). Assigned to hregs or the stack by
15145     the global register allocator.
15146 - When to do optimizations like alu->alu_imm:
15147   - earlier -> saves work later on since the IR will be smaller/simpler
15148   - later -> can work on more instructions
15149 - Handling of valuetypes:
15150   - When a vtype is pushed on the stack, a new temporary is created, an
15151     instruction computing its address (LDADDR) is emitted and pushed on
15152     the stack. Need to optimize cases when the vtype is used immediately as in
15153     argument passing, stloc etc.
15154 - Instead of the to_end stuff in the old JIT, simply call the function handling
15155   the values on the stack before emitting the last instruction of the bb.
15156 */
15157
15158 #endif /* DISABLE_JIT */