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         if (src->opcode == OP_PCONST && src->inst_p0 == 0)
4531                 return src;
4532
4533         context_used = mini_class_check_context_used (cfg, klass);
4534
4535         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4536                 res = emit_castclass_with_cache_nonshared (cfg, src, klass);
4537                 (*inline_costs) += 2;
4538                 return res;
4539         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4540                 MonoMethod *mono_castclass;
4541                 MonoInst *iargs [1];
4542                 int costs;
4543
4544                 mono_castclass = mono_marshal_get_castclass (klass);
4545                 iargs [0] = src;
4546
4547                 save_cast_details (cfg, klass, src->dreg, TRUE);
4548                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4549                                                            iargs, ip, cfg->real_offset, TRUE);
4550                 reset_cast_details (cfg);
4551                 CHECK_CFG_EXCEPTION;
4552                 g_assert (costs > 0);
4553
4554                 cfg->real_offset += 5;
4555
4556                 (*inline_costs) += costs;
4557
4558                 return src;
4559         }
4560
4561         if (context_used) {
4562                 MonoInst *args [3];
4563
4564                 if (mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4565                         MonoInst *cache_ins;
4566
4567                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4568
4569                         /* obj */
4570                         args [0] = src;
4571
4572                         /* klass - it's the second element of the cache entry*/
4573                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4574
4575                         /* cache */
4576                         args [2] = cache_ins;
4577
4578                         return emit_castclass_with_cache (cfg, klass, args);
4579                 }
4580
4581                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4582         }
4583
4584         NEW_BBLOCK (cfg, is_null_bb);
4585
4586         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4587         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4588
4589         save_cast_details (cfg, klass, obj_reg, FALSE);
4590
4591         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4592                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4593                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4594         } else {
4595                 int klass_reg = alloc_preg (cfg);
4596
4597                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4598
4599                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4600                         /* the remoting code is broken, access the class for now */
4601                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4602                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4603                                 if (!vt) {
4604                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4605                                         cfg->exception_ptr = klass;
4606                                         return NULL;
4607                                 }
4608                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4609                         } else {
4610                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4611                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4612                         }
4613                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4614                 } else {
4615                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4616                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4617                 }
4618         }
4619
4620         MONO_START_BB (cfg, is_null_bb);
4621
4622         reset_cast_details (cfg);
4623
4624         return src;
4625
4626 exception_exit:
4627         return NULL;
4628 }
4629
4630 /*
4631  * Returns NULL and set the cfg exception on error.
4632  */
4633 static MonoInst*
4634 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4635 {
4636         MonoInst *ins;
4637         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4638         int obj_reg = src->dreg;
4639         int vtable_reg = alloc_preg (cfg);
4640         int res_reg = alloc_ireg_ref (cfg);
4641         MonoInst *klass_inst = NULL;
4642
4643         if (context_used) {
4644                 MonoInst *args [3];
4645
4646                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4647                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4648                         MonoInst *cache_ins;
4649
4650                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4651
4652                         /* obj */
4653                         args [0] = src;
4654
4655                         /* klass - it's the second element of the cache entry*/
4656                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4657
4658                         /* cache */
4659                         args [2] = cache_ins;
4660
4661                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4662                 }
4663
4664                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4665         }
4666
4667         NEW_BBLOCK (cfg, is_null_bb);
4668         NEW_BBLOCK (cfg, false_bb);
4669         NEW_BBLOCK (cfg, end_bb);
4670
4671         /* Do the assignment at the beginning, so the other assignment can be if converted */
4672         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4673         ins->type = STACK_OBJ;
4674         ins->klass = klass;
4675
4676         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4677         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4678
4679         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4680
4681         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4682                 g_assert (!context_used);
4683                 /* the is_null_bb target simply copies the input register to the output */
4684                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4685         } else {
4686                 int klass_reg = alloc_preg (cfg);
4687
4688                 if (klass->rank) {
4689                         int rank_reg = alloc_preg (cfg);
4690                         int eclass_reg = alloc_preg (cfg);
4691
4692                         g_assert (!context_used);
4693                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4694                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4695                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4696                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4697                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4698                         if (klass->cast_class == mono_defaults.object_class) {
4699                                 int parent_reg = alloc_preg (cfg);
4700                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4701                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4702                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4703                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4704                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4705                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
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 == mono_defaults.enum_class) {
4709                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4710                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4711                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4712                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4713                         } else {
4714                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4715                                         /* Check that the object is a vector too */
4716                                         int bounds_reg = alloc_preg (cfg);
4717                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4718                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4719                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4720                                 }
4721
4722                                 /* the is_null_bb target simply copies the input register to the output */
4723                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4724                         }
4725                 } else if (mono_class_is_nullable (klass)) {
4726                         g_assert (!context_used);
4727                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4728                         /* the is_null_bb target simply copies the input register to the output */
4729                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4730                 } else {
4731                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4732                                 g_assert (!context_used);
4733                                 /* the remoting code is broken, access the class for now */
4734                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4735                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4736                                         if (!vt) {
4737                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4738                                                 cfg->exception_ptr = klass;
4739                                                 return NULL;
4740                                         }
4741                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4742                                 } else {
4743                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4744                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4745                                 }
4746                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4747                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4748                         } else {
4749                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4750                                 /* the is_null_bb target simply copies the input register to the output */
4751                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4752                         }
4753                 }
4754         }
4755
4756         MONO_START_BB (cfg, false_bb);
4757
4758         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4759         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4760
4761         MONO_START_BB (cfg, is_null_bb);
4762
4763         MONO_START_BB (cfg, end_bb);
4764
4765         return ins;
4766 }
4767
4768 static MonoInst*
4769 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4770 {
4771         /* This opcode takes as input an object reference and a class, and returns:
4772         0) if the object is an instance of the class,
4773         1) if the object is not instance of the class,
4774         2) if the object is a proxy whose type cannot be determined */
4775
4776         MonoInst *ins;
4777 #ifndef DISABLE_REMOTING
4778         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4779 #else
4780         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4781 #endif
4782         int obj_reg = src->dreg;
4783         int dreg = alloc_ireg (cfg);
4784         int tmp_reg;
4785 #ifndef DISABLE_REMOTING
4786         int klass_reg = alloc_preg (cfg);
4787 #endif
4788
4789         NEW_BBLOCK (cfg, true_bb);
4790         NEW_BBLOCK (cfg, false_bb);
4791         NEW_BBLOCK (cfg, end_bb);
4792 #ifndef DISABLE_REMOTING
4793         NEW_BBLOCK (cfg, false2_bb);
4794         NEW_BBLOCK (cfg, no_proxy_bb);
4795 #endif
4796
4797         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4798         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4799
4800         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4801 #ifndef DISABLE_REMOTING
4802                 NEW_BBLOCK (cfg, interface_fail_bb);
4803 #endif
4804
4805                 tmp_reg = alloc_preg (cfg);
4806                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4807 #ifndef DISABLE_REMOTING
4808                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4809                 MONO_START_BB (cfg, interface_fail_bb);
4810                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4811
4812                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4813
4814                 tmp_reg = alloc_preg (cfg);
4815                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4816                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4817                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4818 #else
4819                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4820 #endif
4821         } else {
4822 #ifndef DISABLE_REMOTING
4823                 tmp_reg = alloc_preg (cfg);
4824                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4825                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4826
4827                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4828                 tmp_reg = alloc_preg (cfg);
4829                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4830                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4831
4832                 tmp_reg = alloc_preg (cfg);
4833                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4834                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4835                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4836
4837                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4838                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4839
4840                 MONO_START_BB (cfg, no_proxy_bb);
4841
4842                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4843 #else
4844                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4845 #endif
4846         }
4847
4848         MONO_START_BB (cfg, false_bb);
4849
4850         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4851         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4852
4853 #ifndef DISABLE_REMOTING
4854         MONO_START_BB (cfg, false2_bb);
4855
4856         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4857         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4858 #endif
4859
4860         MONO_START_BB (cfg, true_bb);
4861
4862         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4863
4864         MONO_START_BB (cfg, end_bb);
4865
4866         /* FIXME: */
4867         MONO_INST_NEW (cfg, ins, OP_ICONST);
4868         ins->dreg = dreg;
4869         ins->type = STACK_I4;
4870
4871         return ins;
4872 }
4873
4874 static MonoInst*
4875 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4876 {
4877         /* This opcode takes as input an object reference and a class, and returns:
4878         0) if the object is an instance of the class,
4879         1) if the object is a proxy whose type cannot be determined
4880         an InvalidCastException exception is thrown otherwhise*/
4881
4882         MonoInst *ins;
4883 #ifndef DISABLE_REMOTING
4884         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4885 #else
4886         MonoBasicBlock *ok_result_bb;
4887 #endif
4888         int obj_reg = src->dreg;
4889         int dreg = alloc_ireg (cfg);
4890         int tmp_reg = alloc_preg (cfg);
4891
4892 #ifndef DISABLE_REMOTING
4893         int klass_reg = alloc_preg (cfg);
4894         NEW_BBLOCK (cfg, end_bb);
4895 #endif
4896
4897         NEW_BBLOCK (cfg, ok_result_bb);
4898
4899         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4900         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4901
4902         save_cast_details (cfg, klass, obj_reg, FALSE);
4903
4904         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4905 #ifndef DISABLE_REMOTING
4906                 NEW_BBLOCK (cfg, interface_fail_bb);
4907
4908                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4909                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4910                 MONO_START_BB (cfg, interface_fail_bb);
4911                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4912
4913                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4914
4915                 tmp_reg = alloc_preg (cfg);
4916                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4917                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4918                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4919
4920                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4921                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4922 #else
4923                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4924                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4925                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4926 #endif
4927         } else {
4928 #ifndef DISABLE_REMOTING
4929                 NEW_BBLOCK (cfg, no_proxy_bb);
4930
4931                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4932                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4933                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4934
4935                 tmp_reg = alloc_preg (cfg);
4936                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4937                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4938
4939                 tmp_reg = alloc_preg (cfg);
4940                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4941                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4942                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4943
4944                 NEW_BBLOCK (cfg, fail_1_bb);
4945
4946                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4947
4948                 MONO_START_BB (cfg, fail_1_bb);
4949
4950                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4951                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4952
4953                 MONO_START_BB (cfg, no_proxy_bb);
4954
4955                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4956 #else
4957                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4958 #endif
4959         }
4960
4961         MONO_START_BB (cfg, ok_result_bb);
4962
4963         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4964
4965 #ifndef DISABLE_REMOTING
4966         MONO_START_BB (cfg, end_bb);
4967 #endif
4968
4969         /* FIXME: */
4970         MONO_INST_NEW (cfg, ins, OP_ICONST);
4971         ins->dreg = dreg;
4972         ins->type = STACK_I4;
4973
4974         return ins;
4975 }
4976
4977 static G_GNUC_UNUSED MonoInst*
4978 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4979 {
4980         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4981         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4982         gboolean is_i4;
4983
4984         switch (enum_type->type) {
4985         case MONO_TYPE_I8:
4986         case MONO_TYPE_U8:
4987 #if SIZEOF_REGISTER == 8
4988         case MONO_TYPE_I:
4989         case MONO_TYPE_U:
4990 #endif
4991                 is_i4 = FALSE;
4992                 break;
4993         default:
4994                 is_i4 = TRUE;
4995                 break;
4996         }
4997
4998         {
4999                 MonoInst *load, *and_, *cmp, *ceq;
5000                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5001                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5002                 int dest_reg = alloc_ireg (cfg);
5003
5004                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
5005                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
5006                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
5007                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
5008
5009                 ceq->type = STACK_I4;
5010
5011                 if (!is_i4) {
5012                         load = mono_decompose_opcode (cfg, load);
5013                         and_ = mono_decompose_opcode (cfg, and_);
5014                         cmp = mono_decompose_opcode (cfg, cmp);
5015                         ceq = mono_decompose_opcode (cfg, ceq);
5016                 }
5017
5018                 return ceq;
5019         }
5020 }
5021
5022 /*
5023  * Returns NULL and set the cfg exception on error.
5024  */
5025 static G_GNUC_UNUSED MonoInst*
5026 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5027 {
5028         MonoInst *ptr;
5029         int dreg;
5030         gpointer trampoline;
5031         MonoInst *obj, *method_ins, *tramp_ins;
5032         MonoDomain *domain;
5033         guint8 **code_slot;
5034
5035         if (virtual_ && !cfg->llvm_only) {
5036                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5037                 g_assert (invoke);
5038
5039                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5040                         return NULL;
5041         }
5042
5043         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5044         if (!obj)
5045                 return NULL;
5046
5047         /* Inline the contents of mono_delegate_ctor */
5048
5049         /* Set target field */
5050         /* Optimize away setting of NULL target */
5051         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5052                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5053                 if (cfg->gen_write_barriers) {
5054                         dreg = alloc_preg (cfg);
5055                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5056                         emit_write_barrier (cfg, ptr, target);
5057                 }
5058         }
5059
5060         /* Set method field */
5061         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5062         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5063
5064         /*
5065          * To avoid looking up the compiled code belonging to the target method
5066          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5067          * store it, and we fill it after the method has been compiled.
5068          */
5069         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5070                 MonoInst *code_slot_ins;
5071
5072                 if (context_used) {
5073                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5074                 } else {
5075                         domain = mono_domain_get ();
5076                         mono_domain_lock (domain);
5077                         if (!domain_jit_info (domain)->method_code_hash)
5078                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5079                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5080                         if (!code_slot) {
5081                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5082                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5083                         }
5084                         mono_domain_unlock (domain);
5085
5086                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5087                 }
5088                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5089         }
5090
5091         if (cfg->llvm_only) {
5092                 MonoInst *args [16];
5093
5094                 if (virtual_) {
5095                         args [0] = obj;
5096                         args [1] = target;
5097                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5098                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5099                 } else {
5100                         args [0] = obj;
5101                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5102                 }
5103
5104                 return obj;
5105         }
5106
5107         if (cfg->compile_aot) {
5108                 MonoDelegateClassMethodPair *del_tramp;
5109
5110                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5111                 del_tramp->klass = klass;
5112                 del_tramp->method = context_used ? NULL : method;
5113                 del_tramp->is_virtual = virtual_;
5114                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5115         } else {
5116                 if (virtual_)
5117                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5118                 else
5119                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5120                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5121         }
5122
5123         /* Set invoke_impl field */
5124         if (virtual_) {
5125                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5126         } else {
5127                 dreg = alloc_preg (cfg);
5128                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5129                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5130
5131                 dreg = alloc_preg (cfg);
5132                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5133                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5134         }
5135
5136         dreg = alloc_preg (cfg);
5137         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5138         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5139
5140         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5141
5142         return obj;
5143 }
5144
5145 static MonoInst*
5146 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5147 {
5148         MonoJitICallInfo *info;
5149
5150         /* Need to register the icall so it gets an icall wrapper */
5151         info = mono_get_array_new_va_icall (rank);
5152
5153         cfg->flags |= MONO_CFG_HAS_VARARGS;
5154
5155         /* mono_array_new_va () needs a vararg calling convention */
5156         cfg->exception_message = g_strdup ("array-new");
5157         cfg->disable_llvm = TRUE;
5158
5159         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5160         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5161 }
5162
5163 /*
5164  * handle_constrained_gsharedvt_call:
5165  *
5166  *   Handle constrained calls where the receiver is a gsharedvt type.
5167  * Return the instruction representing the call. Set the cfg exception on failure.
5168  */
5169 static MonoInst*
5170 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5171                                                                    gboolean *ref_emit_widen)
5172 {
5173         MonoInst *ins = NULL;
5174         gboolean emit_widen = *ref_emit_widen;
5175
5176         /*
5177          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5178          * 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
5179          * pack the arguments into an array, and do the rest of the work in in an icall.
5180          */
5181         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5182                 (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)) &&
5183                 (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]))))) {
5184                 MonoInst *args [16];
5185
5186                 /*
5187                  * This case handles calls to
5188                  * - object:ToString()/Equals()/GetHashCode(),
5189                  * - System.IComparable<T>:CompareTo()
5190                  * - System.IEquatable<T>:Equals ()
5191                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5192                  */
5193
5194                 args [0] = sp [0];
5195                 if (mono_method_check_context_used (cmethod))
5196                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5197                 else
5198                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5199                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5200
5201                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5202                 if (fsig->hasthis && fsig->param_count) {
5203                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5204                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5205                         ins->dreg = alloc_preg (cfg);
5206                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5207                         MONO_ADD_INS (cfg->cbb, ins);
5208                         args [4] = ins;
5209
5210                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5211                                 int addr_reg, deref_arg_reg;
5212
5213                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5214                                 deref_arg_reg = alloc_preg (cfg);
5215                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5216                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5217
5218                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5219                                 addr_reg = ins->dreg;
5220                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5221                         } else {
5222                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5223                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5224                         }
5225                 } else {
5226                         EMIT_NEW_ICONST (cfg, args [3], 0);
5227                         EMIT_NEW_ICONST (cfg, args [4], 0);
5228                 }
5229                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5230                 emit_widen = FALSE;
5231
5232                 if (mini_is_gsharedvt_type (fsig->ret)) {
5233                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5234                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5235                         MonoInst *add;
5236
5237                         /* Unbox */
5238                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5239                         MONO_ADD_INS (cfg->cbb, add);
5240                         /* Load value */
5241                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5242                         MONO_ADD_INS (cfg->cbb, ins);
5243                         /* ins represents the call result */
5244                 }
5245         } else {
5246                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5247         }
5248
5249         *ref_emit_widen = emit_widen;
5250
5251         return ins;
5252
5253  exception_exit:
5254         return NULL;
5255 }
5256
5257 static void
5258 mono_emit_load_got_addr (MonoCompile *cfg)
5259 {
5260         MonoInst *getaddr, *dummy_use;
5261
5262         if (!cfg->got_var || cfg->got_var_allocated)
5263                 return;
5264
5265         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5266         getaddr->cil_code = cfg->header->code;
5267         getaddr->dreg = cfg->got_var->dreg;
5268
5269         /* Add it to the start of the first bblock */
5270         if (cfg->bb_entry->code) {
5271                 getaddr->next = cfg->bb_entry->code;
5272                 cfg->bb_entry->code = getaddr;
5273         }
5274         else
5275                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5276
5277         cfg->got_var_allocated = TRUE;
5278
5279         /*
5280          * Add a dummy use to keep the got_var alive, since real uses might
5281          * only be generated by the back ends.
5282          * Add it to end_bblock, so the variable's lifetime covers the whole
5283          * method.
5284          * It would be better to make the usage of the got var explicit in all
5285          * cases when the backend needs it (i.e. calls, throw etc.), so this
5286          * wouldn't be needed.
5287          */
5288         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5289         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5290 }
5291
5292 static int inline_limit;
5293 static gboolean inline_limit_inited;
5294
5295 static gboolean
5296 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5297 {
5298         MonoMethodHeaderSummary header;
5299         MonoVTable *vtable;
5300 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5301         MonoMethodSignature *sig = mono_method_signature (method);
5302         int i;
5303 #endif
5304
5305         if (cfg->disable_inline)
5306                 return FALSE;
5307         if (cfg->gshared)
5308                 return FALSE;
5309
5310         if (cfg->inline_depth > 10)
5311                 return FALSE;
5312
5313         if (!mono_method_get_header_summary (method, &header))
5314                 return FALSE;
5315
5316         /*runtime, icall and pinvoke are checked by summary call*/
5317         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5318             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5319             (mono_class_is_marshalbyref (method->klass)) ||
5320             header.has_clauses)
5321                 return FALSE;
5322
5323         /* also consider num_locals? */
5324         /* Do the size check early to avoid creating vtables */
5325         if (!inline_limit_inited) {
5326                 if (g_getenv ("MONO_INLINELIMIT"))
5327                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5328                 else
5329                         inline_limit = INLINE_LENGTH_LIMIT;
5330                 inline_limit_inited = TRUE;
5331         }
5332         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5333                 return FALSE;
5334
5335         /*
5336          * if we can initialize the class of the method right away, we do,
5337          * otherwise we don't allow inlining if the class needs initialization,
5338          * since it would mean inserting a call to mono_runtime_class_init()
5339          * inside the inlined code
5340          */
5341         if (!(cfg->opt & MONO_OPT_SHARED)) {
5342                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5343                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5344                         vtable = mono_class_vtable (cfg->domain, method->klass);
5345                         if (!vtable)
5346                                 return FALSE;
5347                         if (!cfg->compile_aot) {
5348                                 MonoError error;
5349                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5350                                         mono_error_cleanup (&error);
5351                                         return FALSE;
5352                                 }
5353                         }
5354                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5355                         if (cfg->run_cctors && method->klass->has_cctor) {
5356                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5357                                 if (!method->klass->runtime_info)
5358                                         /* No vtable created yet */
5359                                         return FALSE;
5360                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5361                                 if (!vtable)
5362                                         return FALSE;
5363                                 /* This makes so that inline cannot trigger */
5364                                 /* .cctors: too many apps depend on them */
5365                                 /* running with a specific order... */
5366                                 if (! vtable->initialized)
5367                                         return FALSE;
5368                                 MonoError error;
5369                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5370                                         mono_error_cleanup (&error);
5371                                         return FALSE;
5372                                 }
5373                         }
5374                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5375                         if (!method->klass->runtime_info)
5376                                 /* No vtable created yet */
5377                                 return FALSE;
5378                         vtable = mono_class_vtable (cfg->domain, method->klass);
5379                         if (!vtable)
5380                                 return FALSE;
5381                         if (!vtable->initialized)
5382                                 return FALSE;
5383                 }
5384         } else {
5385                 /*
5386                  * If we're compiling for shared code
5387                  * the cctor will need to be run at aot method load time, for example,
5388                  * or at the end of the compilation of the inlining method.
5389                  */
5390                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5391                         return FALSE;
5392         }
5393
5394 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5395         if (mono_arch_is_soft_float ()) {
5396                 /* FIXME: */
5397                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5398                         return FALSE;
5399                 for (i = 0; i < sig->param_count; ++i)
5400                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5401                                 return FALSE;
5402         }
5403 #endif
5404
5405         if (g_list_find (cfg->dont_inline, method))
5406                 return FALSE;
5407
5408         return TRUE;
5409 }
5410
5411 static gboolean
5412 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5413 {
5414         if (!cfg->compile_aot) {
5415                 g_assert (vtable);
5416                 if (vtable->initialized)
5417                         return FALSE;
5418         }
5419
5420         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5421                 if (cfg->method == method)
5422                         return FALSE;
5423         }
5424
5425         if (!mono_class_needs_cctor_run (klass, method))
5426                 return FALSE;
5427
5428         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5429                 /* The initialization is already done before the method is called */
5430                 return FALSE;
5431
5432         return TRUE;
5433 }
5434
5435 static MonoInst*
5436 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5437 {
5438         MonoInst *ins;
5439         guint32 size;
5440         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5441         int context_used;
5442
5443         if (mini_is_gsharedvt_variable_klass (klass)) {
5444                 size = -1;
5445         } else {
5446                 mono_class_init (klass);
5447                 size = mono_class_array_element_size (klass);
5448         }
5449
5450         mult_reg = alloc_preg (cfg);
5451         array_reg = arr->dreg;
5452         index_reg = index->dreg;
5453
5454 #if SIZEOF_REGISTER == 8
5455         /* The array reg is 64 bits but the index reg is only 32 */
5456         if (COMPILE_LLVM (cfg)) {
5457                 /* Not needed */
5458                 index2_reg = index_reg;
5459         } else {
5460                 index2_reg = alloc_preg (cfg);
5461                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5462         }
5463 #else
5464         if (index->type == STACK_I8) {
5465                 index2_reg = alloc_preg (cfg);
5466                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5467         } else {
5468                 index2_reg = index_reg;
5469         }
5470 #endif
5471
5472         if (bcheck)
5473                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5474
5475 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5476         if (size == 1 || size == 2 || size == 4 || size == 8) {
5477                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5478
5479                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5480                 ins->klass = mono_class_get_element_class (klass);
5481                 ins->type = STACK_MP;
5482
5483                 return ins;
5484         }
5485 #endif
5486
5487         add_reg = alloc_ireg_mp (cfg);
5488
5489         if (size == -1) {
5490                 MonoInst *rgctx_ins;
5491
5492                 /* gsharedvt */
5493                 g_assert (cfg->gshared);
5494                 context_used = mini_class_check_context_used (cfg, klass);
5495                 g_assert (context_used);
5496                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5497                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5498         } else {
5499                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5500         }
5501         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5502         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5503         ins->klass = mono_class_get_element_class (klass);
5504         ins->type = STACK_MP;
5505         MONO_ADD_INS (cfg->cbb, ins);
5506
5507         return ins;
5508 }
5509
5510 static MonoInst*
5511 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5512 {
5513         int bounds_reg = alloc_preg (cfg);
5514         int add_reg = alloc_ireg_mp (cfg);
5515         int mult_reg = alloc_preg (cfg);
5516         int mult2_reg = alloc_preg (cfg);
5517         int low1_reg = alloc_preg (cfg);
5518         int low2_reg = alloc_preg (cfg);
5519         int high1_reg = alloc_preg (cfg);
5520         int high2_reg = alloc_preg (cfg);
5521         int realidx1_reg = alloc_preg (cfg);
5522         int realidx2_reg = alloc_preg (cfg);
5523         int sum_reg = alloc_preg (cfg);
5524         int index1, index2, tmpreg;
5525         MonoInst *ins;
5526         guint32 size;
5527
5528         mono_class_init (klass);
5529         size = mono_class_array_element_size (klass);
5530
5531         index1 = index_ins1->dreg;
5532         index2 = index_ins2->dreg;
5533
5534 #if SIZEOF_REGISTER == 8
5535         /* The array reg is 64 bits but the index reg is only 32 */
5536         if (COMPILE_LLVM (cfg)) {
5537                 /* Not needed */
5538         } else {
5539                 tmpreg = alloc_preg (cfg);
5540                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5541                 index1 = tmpreg;
5542                 tmpreg = alloc_preg (cfg);
5543                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5544                 index2 = tmpreg;
5545         }
5546 #else
5547         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5548         tmpreg = -1;
5549 #endif
5550
5551         /* range checking */
5552         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5553                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5554
5555         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5556                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5557         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5558         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5559                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5560         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5561         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5562
5563         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5564                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5565         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5566         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5567                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5568         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5569         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5570
5571         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5572         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5573         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5574         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5575         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5576
5577         ins->type = STACK_MP;
5578         ins->klass = klass;
5579         MONO_ADD_INS (cfg->cbb, ins);
5580
5581         return ins;
5582 }
5583
5584 static MonoInst*
5585 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5586 {
5587         int rank;
5588         MonoInst *addr;
5589         MonoMethod *addr_method;
5590         int element_size;
5591         MonoClass *eclass = cmethod->klass->element_class;
5592
5593         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5594
5595         if (rank == 1)
5596                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5597
5598         /* emit_ldelema_2 depends on OP_LMUL */
5599         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5600                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5601         }
5602
5603         if (mini_is_gsharedvt_variable_klass (eclass))
5604                 element_size = 0;
5605         else
5606                 element_size = mono_class_array_element_size (eclass);
5607         addr_method = mono_marshal_get_array_address (rank, element_size);
5608         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5609
5610         return addr;
5611 }
5612
5613 static MonoBreakPolicy
5614 always_insert_breakpoint (MonoMethod *method)
5615 {
5616         return MONO_BREAK_POLICY_ALWAYS;
5617 }
5618
5619 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5620
5621 /**
5622  * mono_set_break_policy:
5623  * policy_callback: the new callback function
5624  *
5625  * Allow embedders to decide wherther to actually obey breakpoint instructions
5626  * (both break IL instructions and Debugger.Break () method calls), for example
5627  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5628  * untrusted or semi-trusted code.
5629  *
5630  * @policy_callback will be called every time a break point instruction needs to
5631  * be inserted with the method argument being the method that calls Debugger.Break()
5632  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5633  * if it wants the breakpoint to not be effective in the given method.
5634  * #MONO_BREAK_POLICY_ALWAYS is the default.
5635  */
5636 void
5637 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5638 {
5639         if (policy_callback)
5640                 break_policy_func = policy_callback;
5641         else
5642                 break_policy_func = always_insert_breakpoint;
5643 }
5644
5645 static gboolean
5646 should_insert_brekpoint (MonoMethod *method) {
5647         switch (break_policy_func (method)) {
5648         case MONO_BREAK_POLICY_ALWAYS:
5649                 return TRUE;
5650         case MONO_BREAK_POLICY_NEVER:
5651                 return FALSE;
5652         case MONO_BREAK_POLICY_ON_DBG:
5653                 g_warning ("mdb no longer supported");
5654                 return FALSE;
5655         default:
5656                 g_warning ("Incorrect value returned from break policy callback");
5657                 return FALSE;
5658         }
5659 }
5660
5661 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5662 static MonoInst*
5663 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5664 {
5665         MonoInst *addr, *store, *load;
5666         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5667
5668         /* the bounds check is already done by the callers */
5669         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5670         if (is_set) {
5671                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5672                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5673                 if (mini_type_is_reference (fsig->params [2]))
5674                         emit_write_barrier (cfg, addr, load);
5675         } else {
5676                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5677                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5678         }
5679         return store;
5680 }
5681
5682
5683 static gboolean
5684 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5685 {
5686         return mini_type_is_reference (&klass->byval_arg);
5687 }
5688
5689 static MonoInst*
5690 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5691 {
5692         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5693                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5694                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5695                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5696                 MonoInst *iargs [3];
5697
5698                 if (!helper->slot)
5699                         mono_class_setup_vtable (obj_array);
5700                 g_assert (helper->slot);
5701
5702                 if (sp [0]->type != STACK_OBJ)
5703                         return NULL;
5704                 if (sp [2]->type != STACK_OBJ)
5705                         return NULL;
5706
5707                 iargs [2] = sp [2];
5708                 iargs [1] = sp [1];
5709                 iargs [0] = sp [0];
5710
5711                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5712         } else {
5713                 MonoInst *ins;
5714
5715                 if (mini_is_gsharedvt_variable_klass (klass)) {
5716                         MonoInst *addr;
5717
5718                         // FIXME-VT: OP_ICONST optimization
5719                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5720                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5721                         ins->opcode = OP_STOREV_MEMBASE;
5722                 } else if (sp [1]->opcode == OP_ICONST) {
5723                         int array_reg = sp [0]->dreg;
5724                         int index_reg = sp [1]->dreg;
5725                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5726
5727                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5728                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5729
5730                         if (safety_checks)
5731                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5732                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5733                 } else {
5734                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5735                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5736                         if (generic_class_is_reference_type (cfg, klass))
5737                                 emit_write_barrier (cfg, addr, sp [2]);
5738                 }
5739                 return ins;
5740         }
5741 }
5742
5743 static MonoInst*
5744 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5745 {
5746         MonoClass *eklass;
5747
5748         if (is_set)
5749                 eklass = mono_class_from_mono_type (fsig->params [2]);
5750         else
5751                 eklass = mono_class_from_mono_type (fsig->ret);
5752
5753         if (is_set) {
5754                 return emit_array_store (cfg, eklass, args, FALSE);
5755         } else {
5756                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5757                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5758                 return ins;
5759         }
5760 }
5761
5762 static gboolean
5763 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5764 {
5765         uint32_t align;
5766         int param_size, return_size;
5767
5768         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5769         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5770
5771         if (cfg->verbose_level > 3)
5772                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5773
5774         //Don't allow mixing reference types with value types
5775         if (param_klass->valuetype != return_klass->valuetype) {
5776                 if (cfg->verbose_level > 3)
5777                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5778                 return FALSE;
5779         }
5780
5781         if (!param_klass->valuetype) {
5782                 if (cfg->verbose_level > 3)
5783                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5784                 return TRUE;
5785         }
5786
5787         //That are blitable
5788         if (param_klass->has_references || return_klass->has_references)
5789                 return FALSE;
5790
5791         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5792         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5793                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5794                         if (cfg->verbose_level > 3)
5795                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5796                 return FALSE;
5797         }
5798
5799         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5800                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5801                 if (cfg->verbose_level > 3)
5802                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5803                 return FALSE;
5804         }
5805
5806         param_size = mono_class_value_size (param_klass, &align);
5807         return_size = mono_class_value_size (return_klass, &align);
5808
5809         //We can do it if sizes match
5810         if (param_size == return_size) {
5811                 if (cfg->verbose_level > 3)
5812                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5813                 return TRUE;
5814         }
5815
5816         //No simple way to handle struct if sizes don't match
5817         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5818                 if (cfg->verbose_level > 3)
5819                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5820                 return FALSE;
5821         }
5822
5823         /*
5824          * Same reg size category.
5825          * A quick note on why we don't require widening here.
5826          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5827          *
5828          * Since the source value comes from a function argument, the JIT will already have
5829          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5830          */
5831         if (param_size <= 4 && return_size <= 4) {
5832                 if (cfg->verbose_level > 3)
5833                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5834                 return TRUE;
5835         }
5836
5837         return FALSE;
5838 }
5839
5840 static MonoInst*
5841 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5842 {
5843         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5844         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5845
5846         if (mini_is_gsharedvt_variable_type (fsig->ret))
5847                 return NULL;
5848
5849         //Valuetypes that are semantically equivalent or numbers than can be widened to
5850         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5851                 return args [0];
5852
5853         //Arrays of valuetypes that are semantically equivalent
5854         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5855                 return args [0];
5856
5857         return NULL;
5858 }
5859
5860 static MonoInst*
5861 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5862 {
5863 #ifdef MONO_ARCH_SIMD_INTRINSICS
5864         MonoInst *ins = NULL;
5865
5866         if (cfg->opt & MONO_OPT_SIMD) {
5867                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5868                 if (ins)
5869                         return ins;
5870         }
5871 #endif
5872
5873         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5874 }
5875
5876 static MonoInst*
5877 emit_memory_barrier (MonoCompile *cfg, int kind)
5878 {
5879         MonoInst *ins = NULL;
5880         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5881         MONO_ADD_INS (cfg->cbb, ins);
5882         ins->backend.memory_barrier_kind = kind;
5883
5884         return ins;
5885 }
5886
5887 static MonoInst*
5888 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5889 {
5890         MonoInst *ins = NULL;
5891         int opcode = 0;
5892
5893         /* The LLVM backend supports these intrinsics */
5894         if (cmethod->klass == mono_defaults.math_class) {
5895                 if (strcmp (cmethod->name, "Sin") == 0) {
5896                         opcode = OP_SIN;
5897                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5898                         opcode = OP_COS;
5899                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5900                         opcode = OP_SQRT;
5901                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5902                         opcode = OP_ABS;
5903                 }
5904
5905                 if (opcode && fsig->param_count == 1) {
5906                         MONO_INST_NEW (cfg, ins, opcode);
5907                         ins->type = STACK_R8;
5908                         ins->dreg = mono_alloc_freg (cfg);
5909                         ins->sreg1 = args [0]->dreg;
5910                         MONO_ADD_INS (cfg->cbb, ins);
5911                 }
5912
5913                 opcode = 0;
5914                 if (cfg->opt & MONO_OPT_CMOV) {
5915                         if (strcmp (cmethod->name, "Min") == 0) {
5916                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5917                                         opcode = OP_IMIN;
5918                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5919                                         opcode = OP_IMIN_UN;
5920                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5921                                         opcode = OP_LMIN;
5922                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5923                                         opcode = OP_LMIN_UN;
5924                         } else if (strcmp (cmethod->name, "Max") == 0) {
5925                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5926                                         opcode = OP_IMAX;
5927                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5928                                         opcode = OP_IMAX_UN;
5929                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5930                                         opcode = OP_LMAX;
5931                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5932                                         opcode = OP_LMAX_UN;
5933                         }
5934                 }
5935
5936                 if (opcode && fsig->param_count == 2) {
5937                         MONO_INST_NEW (cfg, ins, opcode);
5938                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5939                         ins->dreg = mono_alloc_ireg (cfg);
5940                         ins->sreg1 = args [0]->dreg;
5941                         ins->sreg2 = args [1]->dreg;
5942                         MONO_ADD_INS (cfg->cbb, ins);
5943                 }
5944         }
5945
5946         return ins;
5947 }
5948
5949 static MonoInst*
5950 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5951 {
5952         if (cmethod->klass == mono_defaults.array_class) {
5953                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5954                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5955                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5956                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5957                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5958                         return emit_array_unsafe_mov (cfg, fsig, args);
5959         }
5960
5961         return NULL;
5962 }
5963
5964 static MonoInst*
5965 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5966 {
5967         MonoInst *ins = NULL;
5968
5969          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5970
5971         if (cmethod->klass == mono_defaults.string_class) {
5972                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5973                         int dreg = alloc_ireg (cfg);
5974                         int index_reg = alloc_preg (cfg);
5975                         int add_reg = alloc_preg (cfg);
5976
5977 #if SIZEOF_REGISTER == 8
5978                         if (COMPILE_LLVM (cfg)) {
5979                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5980                         } else {
5981                                 /* The array reg is 64 bits but the index reg is only 32 */
5982                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5983                         }
5984 #else
5985                         index_reg = args [1]->dreg;
5986 #endif
5987                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5988
5989 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5990                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5991                         add_reg = ins->dreg;
5992                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5993                                                                    add_reg, 0);
5994 #else
5995                         int mult_reg = alloc_preg (cfg);
5996                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5997                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5998                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5999                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
6000 #endif
6001                         type_from_op (cfg, ins, NULL, NULL);
6002                         return ins;
6003                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6004                         int dreg = alloc_ireg (cfg);
6005                         /* Decompose later to allow more optimizations */
6006                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
6007                         ins->type = STACK_I4;
6008                         ins->flags |= MONO_INST_FAULT;
6009                         cfg->cbb->has_array_access = TRUE;
6010                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6011
6012                         return ins;
6013                 } else
6014                         return NULL;
6015         } else if (cmethod->klass == mono_defaults.object_class) {
6016                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6017                         int dreg = alloc_ireg_ref (cfg);
6018                         int vt_reg = alloc_preg (cfg);
6019                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6020                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6021                         type_from_op (cfg, ins, NULL, NULL);
6022
6023                         return ins;
6024                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6025                         int dreg = alloc_ireg (cfg);
6026                         int t1 = alloc_ireg (cfg);
6027
6028                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6029                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6030                         ins->type = STACK_I4;
6031
6032                         return ins;
6033                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6034                         MONO_INST_NEW (cfg, ins, OP_NOP);
6035                         MONO_ADD_INS (cfg->cbb, ins);
6036                         return ins;
6037                 } else
6038                         return NULL;
6039         } else if (cmethod->klass == mono_defaults.array_class) {
6040                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6041                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6042                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6043                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6044
6045 #ifndef MONO_BIG_ARRAYS
6046                 /*
6047                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6048                  * Array methods.
6049                  */
6050                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6051                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6052                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6053                         int dreg = alloc_ireg (cfg);
6054                         int bounds_reg = alloc_ireg_mp (cfg);
6055                         MonoBasicBlock *end_bb, *szarray_bb;
6056                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6057
6058                         NEW_BBLOCK (cfg, end_bb);
6059                         NEW_BBLOCK (cfg, szarray_bb);
6060
6061                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6062                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6063                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6064                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6065                         /* Non-szarray case */
6066                         if (get_length)
6067                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6068                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6069                         else
6070                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6071                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6072                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6073                         MONO_START_BB (cfg, szarray_bb);
6074                         /* Szarray case */
6075                         if (get_length)
6076                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6077                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6078                         else
6079                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6080                         MONO_START_BB (cfg, end_bb);
6081
6082                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6083                         ins->type = STACK_I4;
6084
6085                         return ins;
6086                 }
6087 #endif
6088
6089                 if (cmethod->name [0] != 'g')
6090                         return NULL;
6091
6092                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6093                         int dreg = alloc_ireg (cfg);
6094                         int vtable_reg = alloc_preg (cfg);
6095                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6096                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6097                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6098                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6099                         type_from_op (cfg, ins, NULL, NULL);
6100
6101                         return ins;
6102                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6103                         int dreg = alloc_ireg (cfg);
6104
6105                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6106                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6107                         type_from_op (cfg, ins, NULL, NULL);
6108
6109                         return ins;
6110                 } else
6111                         return NULL;
6112         } else if (cmethod->klass == runtime_helpers_class) {
6113                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6114                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6115                         return ins;
6116                 } else
6117                         return NULL;
6118         } else if (cmethod->klass == mono_defaults.monitor_class) {
6119                 gboolean is_enter = FALSE;
6120
6121                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6122                         is_enter = TRUE;
6123
6124                 if (is_enter) {
6125                         /*
6126                          * To make async stack traces work, icalls which can block should have a wrapper.
6127                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6128                          */
6129                         MonoBasicBlock *end_bb;
6130
6131                         NEW_BBLOCK (cfg, end_bb);
6132
6133                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter_fast, args);
6134                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6135                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6136                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter, args);
6137                         MONO_START_BB (cfg, end_bb);
6138                         return ins;
6139                 }
6140         } else if (cmethod->klass == mono_defaults.thread_class) {
6141                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6142                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6143                         MONO_ADD_INS (cfg->cbb, ins);
6144                         return ins;
6145                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6146                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6147                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6148                         guint32 opcode = 0;
6149                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6150
6151                         if (fsig->params [0]->type == MONO_TYPE_I1)
6152                                 opcode = OP_LOADI1_MEMBASE;
6153                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6154                                 opcode = OP_LOADU1_MEMBASE;
6155                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6156                                 opcode = OP_LOADI2_MEMBASE;
6157                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6158                                 opcode = OP_LOADU2_MEMBASE;
6159                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6160                                 opcode = OP_LOADI4_MEMBASE;
6161                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6162                                 opcode = OP_LOADU4_MEMBASE;
6163                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6164                                 opcode = OP_LOADI8_MEMBASE;
6165                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6166                                 opcode = OP_LOADR4_MEMBASE;
6167                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6168                                 opcode = OP_LOADR8_MEMBASE;
6169                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6170                                 opcode = OP_LOAD_MEMBASE;
6171
6172                         if (opcode) {
6173                                 MONO_INST_NEW (cfg, ins, opcode);
6174                                 ins->inst_basereg = args [0]->dreg;
6175                                 ins->inst_offset = 0;
6176                                 MONO_ADD_INS (cfg->cbb, ins);
6177
6178                                 switch (fsig->params [0]->type) {
6179                                 case MONO_TYPE_I1:
6180                                 case MONO_TYPE_U1:
6181                                 case MONO_TYPE_I2:
6182                                 case MONO_TYPE_U2:
6183                                 case MONO_TYPE_I4:
6184                                 case MONO_TYPE_U4:
6185                                         ins->dreg = mono_alloc_ireg (cfg);
6186                                         ins->type = STACK_I4;
6187                                         break;
6188                                 case MONO_TYPE_I8:
6189                                 case MONO_TYPE_U8:
6190                                         ins->dreg = mono_alloc_lreg (cfg);
6191                                         ins->type = STACK_I8;
6192                                         break;
6193                                 case MONO_TYPE_I:
6194                                 case MONO_TYPE_U:
6195                                         ins->dreg = mono_alloc_ireg (cfg);
6196 #if SIZEOF_REGISTER == 8
6197                                         ins->type = STACK_I8;
6198 #else
6199                                         ins->type = STACK_I4;
6200 #endif
6201                                         break;
6202                                 case MONO_TYPE_R4:
6203                                 case MONO_TYPE_R8:
6204                                         ins->dreg = mono_alloc_freg (cfg);
6205                                         ins->type = STACK_R8;
6206                                         break;
6207                                 default:
6208                                         g_assert (mini_type_is_reference (fsig->params [0]));
6209                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6210                                         ins->type = STACK_OBJ;
6211                                         break;
6212                                 }
6213
6214                                 if (opcode == OP_LOADI8_MEMBASE)
6215                                         ins = mono_decompose_opcode (cfg, ins);
6216
6217                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6218
6219                                 return ins;
6220                         }
6221                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6222                         guint32 opcode = 0;
6223                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6224
6225                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6226                                 opcode = OP_STOREI1_MEMBASE_REG;
6227                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6228                                 opcode = OP_STOREI2_MEMBASE_REG;
6229                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6230                                 opcode = OP_STOREI4_MEMBASE_REG;
6231                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6232                                 opcode = OP_STOREI8_MEMBASE_REG;
6233                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6234                                 opcode = OP_STORER4_MEMBASE_REG;
6235                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6236                                 opcode = OP_STORER8_MEMBASE_REG;
6237                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6238                                 opcode = OP_STORE_MEMBASE_REG;
6239
6240                         if (opcode) {
6241                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6242
6243                                 MONO_INST_NEW (cfg, ins, opcode);
6244                                 ins->sreg1 = args [1]->dreg;
6245                                 ins->inst_destbasereg = args [0]->dreg;
6246                                 ins->inst_offset = 0;
6247                                 MONO_ADD_INS (cfg->cbb, ins);
6248
6249                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6250                                         ins = mono_decompose_opcode (cfg, ins);
6251
6252                                 return ins;
6253                         }
6254                 }
6255         } else if (cmethod->klass->image == mono_defaults.corlib &&
6256                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6257                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6258                 ins = NULL;
6259
6260 #if SIZEOF_REGISTER == 8
6261                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6262                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6263                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6264                                 ins->dreg = mono_alloc_preg (cfg);
6265                                 ins->sreg1 = args [0]->dreg;
6266                                 ins->type = STACK_I8;
6267                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6268                                 MONO_ADD_INS (cfg->cbb, ins);
6269                         } else {
6270                                 MonoInst *load_ins;
6271
6272                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6273
6274                                 /* 64 bit reads are already atomic */
6275                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6276                                 load_ins->dreg = mono_alloc_preg (cfg);
6277                                 load_ins->inst_basereg = args [0]->dreg;
6278                                 load_ins->inst_offset = 0;
6279                                 load_ins->type = STACK_I8;
6280                                 MONO_ADD_INS (cfg->cbb, load_ins);
6281
6282                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6283
6284                                 ins = load_ins;
6285                         }
6286                 }
6287 #endif
6288
6289                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6290                         MonoInst *ins_iconst;
6291                         guint32 opcode = 0;
6292
6293                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6294                                 opcode = OP_ATOMIC_ADD_I4;
6295                                 cfg->has_atomic_add_i4 = TRUE;
6296                         }
6297 #if SIZEOF_REGISTER == 8
6298                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6299                                 opcode = OP_ATOMIC_ADD_I8;
6300 #endif
6301                         if (opcode) {
6302                                 if (!mono_arch_opcode_supported (opcode))
6303                                         return NULL;
6304                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6305                                 ins_iconst->inst_c0 = 1;
6306                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6307                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6308
6309                                 MONO_INST_NEW (cfg, ins, opcode);
6310                                 ins->dreg = mono_alloc_ireg (cfg);
6311                                 ins->inst_basereg = args [0]->dreg;
6312                                 ins->inst_offset = 0;
6313                                 ins->sreg2 = ins_iconst->dreg;
6314                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6315                                 MONO_ADD_INS (cfg->cbb, ins);
6316                         }
6317                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6318                         MonoInst *ins_iconst;
6319                         guint32 opcode = 0;
6320
6321                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6322                                 opcode = OP_ATOMIC_ADD_I4;
6323                                 cfg->has_atomic_add_i4 = TRUE;
6324                         }
6325 #if SIZEOF_REGISTER == 8
6326                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6327                                 opcode = OP_ATOMIC_ADD_I8;
6328 #endif
6329                         if (opcode) {
6330                                 if (!mono_arch_opcode_supported (opcode))
6331                                         return NULL;
6332                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6333                                 ins_iconst->inst_c0 = -1;
6334                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6335                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6336
6337                                 MONO_INST_NEW (cfg, ins, opcode);
6338                                 ins->dreg = mono_alloc_ireg (cfg);
6339                                 ins->inst_basereg = args [0]->dreg;
6340                                 ins->inst_offset = 0;
6341                                 ins->sreg2 = ins_iconst->dreg;
6342                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6343                                 MONO_ADD_INS (cfg->cbb, ins);
6344                         }
6345                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6346                         guint32 opcode = 0;
6347
6348                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6349                                 opcode = OP_ATOMIC_ADD_I4;
6350                                 cfg->has_atomic_add_i4 = TRUE;
6351                         }
6352 #if SIZEOF_REGISTER == 8
6353                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6354                                 opcode = OP_ATOMIC_ADD_I8;
6355 #endif
6356                         if (opcode) {
6357                                 if (!mono_arch_opcode_supported (opcode))
6358                                         return NULL;
6359                                 MONO_INST_NEW (cfg, ins, opcode);
6360                                 ins->dreg = mono_alloc_ireg (cfg);
6361                                 ins->inst_basereg = args [0]->dreg;
6362                                 ins->inst_offset = 0;
6363                                 ins->sreg2 = args [1]->dreg;
6364                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6365                                 MONO_ADD_INS (cfg->cbb, ins);
6366                         }
6367                 }
6368                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6369                         MonoInst *f2i = NULL, *i2f;
6370                         guint32 opcode, f2i_opcode, i2f_opcode;
6371                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6372                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6373
6374                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6375                             fsig->params [0]->type == MONO_TYPE_R4) {
6376                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6377                                 f2i_opcode = OP_MOVE_F_TO_I4;
6378                                 i2f_opcode = OP_MOVE_I4_TO_F;
6379                                 cfg->has_atomic_exchange_i4 = TRUE;
6380                         }
6381 #if SIZEOF_REGISTER == 8
6382                         else if (is_ref ||
6383                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6384                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6385                                  fsig->params [0]->type == MONO_TYPE_I) {
6386                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6387                                 f2i_opcode = OP_MOVE_F_TO_I8;
6388                                 i2f_opcode = OP_MOVE_I8_TO_F;
6389                         }
6390 #else
6391                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6392                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6393                                 cfg->has_atomic_exchange_i4 = TRUE;
6394                         }
6395 #endif
6396                         else
6397                                 return NULL;
6398
6399                         if (!mono_arch_opcode_supported (opcode))
6400                                 return NULL;
6401
6402                         if (is_float) {
6403                                 /* TODO: Decompose these opcodes instead of bailing here. */
6404                                 if (COMPILE_SOFT_FLOAT (cfg))
6405                                         return NULL;
6406
6407                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6408                                 f2i->dreg = mono_alloc_ireg (cfg);
6409                                 f2i->sreg1 = args [1]->dreg;
6410                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6411                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6412                                 MONO_ADD_INS (cfg->cbb, f2i);
6413                         }
6414
6415                         MONO_INST_NEW (cfg, ins, opcode);
6416                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6417                         ins->inst_basereg = args [0]->dreg;
6418                         ins->inst_offset = 0;
6419                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6420                         MONO_ADD_INS (cfg->cbb, ins);
6421
6422                         switch (fsig->params [0]->type) {
6423                         case MONO_TYPE_I4:
6424                                 ins->type = STACK_I4;
6425                                 break;
6426                         case MONO_TYPE_I8:
6427                                 ins->type = STACK_I8;
6428                                 break;
6429                         case MONO_TYPE_I:
6430 #if SIZEOF_REGISTER == 8
6431                                 ins->type = STACK_I8;
6432 #else
6433                                 ins->type = STACK_I4;
6434 #endif
6435                                 break;
6436                         case MONO_TYPE_R4:
6437                         case MONO_TYPE_R8:
6438                                 ins->type = STACK_R8;
6439                                 break;
6440                         default:
6441                                 g_assert (mini_type_is_reference (fsig->params [0]));
6442                                 ins->type = STACK_OBJ;
6443                                 break;
6444                         }
6445
6446                         if (is_float) {
6447                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6448                                 i2f->dreg = mono_alloc_freg (cfg);
6449                                 i2f->sreg1 = ins->dreg;
6450                                 i2f->type = STACK_R8;
6451                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6452                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6453                                 MONO_ADD_INS (cfg->cbb, i2f);
6454
6455                                 ins = i2f;
6456                         }
6457
6458                         if (cfg->gen_write_barriers && is_ref)
6459                                 emit_write_barrier (cfg, args [0], args [1]);
6460                 }
6461                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6462                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6463                         guint32 opcode, f2i_opcode, i2f_opcode;
6464                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6465                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6466
6467                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6468                             fsig->params [1]->type == MONO_TYPE_R4) {
6469                                 opcode = OP_ATOMIC_CAS_I4;
6470                                 f2i_opcode = OP_MOVE_F_TO_I4;
6471                                 i2f_opcode = OP_MOVE_I4_TO_F;
6472                                 cfg->has_atomic_cas_i4 = TRUE;
6473                         }
6474 #if SIZEOF_REGISTER == 8
6475                         else if (is_ref ||
6476                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6477                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6478                                  fsig->params [1]->type == MONO_TYPE_I) {
6479                                 opcode = OP_ATOMIC_CAS_I8;
6480                                 f2i_opcode = OP_MOVE_F_TO_I8;
6481                                 i2f_opcode = OP_MOVE_I8_TO_F;
6482                         }
6483 #else
6484                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6485                                 opcode = OP_ATOMIC_CAS_I4;
6486                                 cfg->has_atomic_cas_i4 = TRUE;
6487                         }
6488 #endif
6489                         else
6490                                 return NULL;
6491
6492                         if (!mono_arch_opcode_supported (opcode))
6493                                 return NULL;
6494
6495                         if (is_float) {
6496                                 /* TODO: Decompose these opcodes instead of bailing here. */
6497                                 if (COMPILE_SOFT_FLOAT (cfg))
6498                                         return NULL;
6499
6500                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6501                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6502                                 f2i_new->sreg1 = args [1]->dreg;
6503                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6504                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6505                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6506
6507                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6508                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6509                                 f2i_cmp->sreg1 = args [2]->dreg;
6510                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6511                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6512                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6513                         }
6514
6515                         MONO_INST_NEW (cfg, ins, opcode);
6516                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6517                         ins->sreg1 = args [0]->dreg;
6518                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6519                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6520                         MONO_ADD_INS (cfg->cbb, ins);
6521
6522                         switch (fsig->params [1]->type) {
6523                         case MONO_TYPE_I4:
6524                                 ins->type = STACK_I4;
6525                                 break;
6526                         case MONO_TYPE_I8:
6527                                 ins->type = STACK_I8;
6528                                 break;
6529                         case MONO_TYPE_I:
6530 #if SIZEOF_REGISTER == 8
6531                                 ins->type = STACK_I8;
6532 #else
6533                                 ins->type = STACK_I4;
6534 #endif
6535                                 break;
6536                         case MONO_TYPE_R4:
6537                                 ins->type = cfg->r4_stack_type;
6538                                 break;
6539                         case MONO_TYPE_R8:
6540                                 ins->type = STACK_R8;
6541                                 break;
6542                         default:
6543                                 g_assert (mini_type_is_reference (fsig->params [1]));
6544                                 ins->type = STACK_OBJ;
6545                                 break;
6546                         }
6547
6548                         if (is_float) {
6549                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6550                                 i2f->dreg = mono_alloc_freg (cfg);
6551                                 i2f->sreg1 = ins->dreg;
6552                                 i2f->type = STACK_R8;
6553                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6554                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6555                                 MONO_ADD_INS (cfg->cbb, i2f);
6556
6557                                 ins = i2f;
6558                         }
6559
6560                         if (cfg->gen_write_barriers && is_ref)
6561                                 emit_write_barrier (cfg, args [0], args [1]);
6562                 }
6563                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6564                          fsig->params [1]->type == MONO_TYPE_I4) {
6565                         MonoInst *cmp, *ceq;
6566
6567                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6568                                 return NULL;
6569
6570                         /* int32 r = CAS (location, value, comparand); */
6571                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6572                         ins->dreg = alloc_ireg (cfg);
6573                         ins->sreg1 = args [0]->dreg;
6574                         ins->sreg2 = args [1]->dreg;
6575                         ins->sreg3 = args [2]->dreg;
6576                         ins->type = STACK_I4;
6577                         MONO_ADD_INS (cfg->cbb, ins);
6578
6579                         /* bool result = r == comparand; */
6580                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6581                         cmp->sreg1 = ins->dreg;
6582                         cmp->sreg2 = args [2]->dreg;
6583                         cmp->type = STACK_I4;
6584                         MONO_ADD_INS (cfg->cbb, cmp);
6585
6586                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6587                         ceq->dreg = alloc_ireg (cfg);
6588                         ceq->type = STACK_I4;
6589                         MONO_ADD_INS (cfg->cbb, ceq);
6590
6591                         /* *success = result; */
6592                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6593
6594                         cfg->has_atomic_cas_i4 = TRUE;
6595                 }
6596                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6597                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6598
6599                 if (ins)
6600                         return ins;
6601         } else if (cmethod->klass->image == mono_defaults.corlib &&
6602                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6603                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6604                 ins = NULL;
6605
6606                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6607                         guint32 opcode = 0;
6608                         MonoType *t = fsig->params [0];
6609                         gboolean is_ref;
6610                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6611
6612                         g_assert (t->byref);
6613                         /* t is a byref type, so the reference check is more complicated */
6614                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6615                         if (t->type == MONO_TYPE_I1)
6616                                 opcode = OP_ATOMIC_LOAD_I1;
6617                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6618                                 opcode = OP_ATOMIC_LOAD_U1;
6619                         else if (t->type == MONO_TYPE_I2)
6620                                 opcode = OP_ATOMIC_LOAD_I2;
6621                         else if (t->type == MONO_TYPE_U2)
6622                                 opcode = OP_ATOMIC_LOAD_U2;
6623                         else if (t->type == MONO_TYPE_I4)
6624                                 opcode = OP_ATOMIC_LOAD_I4;
6625                         else if (t->type == MONO_TYPE_U4)
6626                                 opcode = OP_ATOMIC_LOAD_U4;
6627                         else if (t->type == MONO_TYPE_R4)
6628                                 opcode = OP_ATOMIC_LOAD_R4;
6629                         else if (t->type == MONO_TYPE_R8)
6630                                 opcode = OP_ATOMIC_LOAD_R8;
6631 #if SIZEOF_REGISTER == 8
6632                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6633                                 opcode = OP_ATOMIC_LOAD_I8;
6634                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6635                                 opcode = OP_ATOMIC_LOAD_U8;
6636 #else
6637                         else if (t->type == MONO_TYPE_I)
6638                                 opcode = OP_ATOMIC_LOAD_I4;
6639                         else if (is_ref || t->type == MONO_TYPE_U)
6640                                 opcode = OP_ATOMIC_LOAD_U4;
6641 #endif
6642
6643                         if (opcode) {
6644                                 if (!mono_arch_opcode_supported (opcode))
6645                                         return NULL;
6646
6647                                 MONO_INST_NEW (cfg, ins, opcode);
6648                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6649                                 ins->sreg1 = args [0]->dreg;
6650                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6651                                 MONO_ADD_INS (cfg->cbb, ins);
6652
6653                                 switch (t->type) {
6654                                 case MONO_TYPE_BOOLEAN:
6655                                 case MONO_TYPE_I1:
6656                                 case MONO_TYPE_U1:
6657                                 case MONO_TYPE_I2:
6658                                 case MONO_TYPE_U2:
6659                                 case MONO_TYPE_I4:
6660                                 case MONO_TYPE_U4:
6661                                         ins->type = STACK_I4;
6662                                         break;
6663                                 case MONO_TYPE_I8:
6664                                 case MONO_TYPE_U8:
6665                                         ins->type = STACK_I8;
6666                                         break;
6667                                 case MONO_TYPE_I:
6668                                 case MONO_TYPE_U:
6669 #if SIZEOF_REGISTER == 8
6670                                         ins->type = STACK_I8;
6671 #else
6672                                         ins->type = STACK_I4;
6673 #endif
6674                                         break;
6675                                 case MONO_TYPE_R4:
6676                                         ins->type = cfg->r4_stack_type;
6677                                         break;
6678                                 case MONO_TYPE_R8:
6679                                         ins->type = STACK_R8;
6680                                         break;
6681                                 default:
6682                                         g_assert (is_ref);
6683                                         ins->type = STACK_OBJ;
6684                                         break;
6685                                 }
6686                         }
6687                 }
6688
6689                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6690                         guint32 opcode = 0;
6691                         MonoType *t = fsig->params [0];
6692                         gboolean is_ref;
6693
6694                         g_assert (t->byref);
6695                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6696                         if (t->type == MONO_TYPE_I1)
6697                                 opcode = OP_ATOMIC_STORE_I1;
6698                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6699                                 opcode = OP_ATOMIC_STORE_U1;
6700                         else if (t->type == MONO_TYPE_I2)
6701                                 opcode = OP_ATOMIC_STORE_I2;
6702                         else if (t->type == MONO_TYPE_U2)
6703                                 opcode = OP_ATOMIC_STORE_U2;
6704                         else if (t->type == MONO_TYPE_I4)
6705                                 opcode = OP_ATOMIC_STORE_I4;
6706                         else if (t->type == MONO_TYPE_U4)
6707                                 opcode = OP_ATOMIC_STORE_U4;
6708                         else if (t->type == MONO_TYPE_R4)
6709                                 opcode = OP_ATOMIC_STORE_R4;
6710                         else if (t->type == MONO_TYPE_R8)
6711                                 opcode = OP_ATOMIC_STORE_R8;
6712 #if SIZEOF_REGISTER == 8
6713                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6714                                 opcode = OP_ATOMIC_STORE_I8;
6715                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6716                                 opcode = OP_ATOMIC_STORE_U8;
6717 #else
6718                         else if (t->type == MONO_TYPE_I)
6719                                 opcode = OP_ATOMIC_STORE_I4;
6720                         else if (is_ref || t->type == MONO_TYPE_U)
6721                                 opcode = OP_ATOMIC_STORE_U4;
6722 #endif
6723
6724                         if (opcode) {
6725                                 if (!mono_arch_opcode_supported (opcode))
6726                                         return NULL;
6727
6728                                 MONO_INST_NEW (cfg, ins, opcode);
6729                                 ins->dreg = args [0]->dreg;
6730                                 ins->sreg1 = args [1]->dreg;
6731                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6732                                 MONO_ADD_INS (cfg->cbb, ins);
6733
6734                                 if (cfg->gen_write_barriers && is_ref)
6735                                         emit_write_barrier (cfg, args [0], args [1]);
6736                         }
6737                 }
6738
6739                 if (ins)
6740                         return ins;
6741         } else if (cmethod->klass->image == mono_defaults.corlib &&
6742                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6743                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6744                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6745                         if (should_insert_brekpoint (cfg->method)) {
6746                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6747                         } else {
6748                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6749                                 MONO_ADD_INS (cfg->cbb, ins);
6750                         }
6751                         return ins;
6752                 }
6753         } else if (cmethod->klass->image == mono_defaults.corlib &&
6754                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6755                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6756                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6757 #ifdef TARGET_WIN32
6758                         EMIT_NEW_ICONST (cfg, ins, 1);
6759 #else
6760                         EMIT_NEW_ICONST (cfg, ins, 0);
6761 #endif
6762                 }
6763         } else if (cmethod->klass->image == mono_defaults.corlib &&
6764                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6765                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6766                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6767                         /* No stack walks are currently available, so implement this as an intrinsic */
6768                         MonoInst *assembly_ins;
6769
6770                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6771                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6772                         return ins;
6773                 }
6774         } else if (cmethod->klass->image == mono_defaults.corlib &&
6775                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6776                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6777                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6778                         /* No stack walks are currently available, so implement this as an intrinsic */
6779                         MonoInst *method_ins;
6780                         MonoMethod *declaring = cfg->method;
6781
6782                         /* This returns the declaring generic method */
6783                         if (declaring->is_inflated)
6784                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6785                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6786                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6787                         cfg->no_inline = TRUE;
6788                         if (cfg->method != cfg->current_method)
6789                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6790                         return ins;
6791                 }
6792         } else if (cmethod->klass == mono_defaults.math_class) {
6793                 /*
6794                  * There is general branchless code for Min/Max, but it does not work for
6795                  * all inputs:
6796                  * http://everything2.com/?node_id=1051618
6797                  */
6798         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6799                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6800                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6801                                 !strcmp (cmethod->klass->name, "Selector")) ||
6802                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6803                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6804                                 !strcmp (cmethod->klass->name, "Selector"))
6805                            ) {
6806                 if (cfg->backend->have_objc_get_selector &&
6807                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6808                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6809                     cfg->compile_aot && !cfg->llvm_only) {
6810                         MonoInst *pi;
6811                         MonoJumpInfoToken *ji;
6812                         MonoString *s;
6813
6814                         // FIXME: llvmonly
6815
6816                         cfg->exception_message = g_strdup ("GetHandle");
6817                         cfg->disable_llvm = TRUE;
6818
6819                         if (args [0]->opcode == OP_GOT_ENTRY) {
6820                                 pi = (MonoInst *)args [0]->inst_p1;
6821                                 g_assert (pi->opcode == OP_PATCH_INFO);
6822                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6823                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6824                         } else {
6825                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6826                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6827                         }
6828
6829                         NULLIFY_INS (args [0]);
6830
6831                         // FIXME: Ugly
6832                         s = mono_ldstr_checked (cfg->domain, ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6833                         return_val_if_nok (&cfg->error, NULL);
6834                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6835                         ins->dreg = mono_alloc_ireg (cfg);
6836                         // FIXME: Leaks
6837                         ins->inst_p0 = mono_string_to_utf8_checked (s, &cfg->error);
6838                         return_val_if_nok (&cfg->error, NULL);
6839                         MONO_ADD_INS (cfg->cbb, ins);
6840                         return ins;
6841                 }
6842         }
6843
6844 #ifdef MONO_ARCH_SIMD_INTRINSICS
6845         if (cfg->opt & MONO_OPT_SIMD) {
6846                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6847                 if (ins)
6848                         return ins;
6849         }
6850 #endif
6851
6852         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6853         if (ins)
6854                 return ins;
6855
6856         if (COMPILE_LLVM (cfg)) {
6857                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6858                 if (ins)
6859                         return ins;
6860         }
6861
6862         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6863 }
6864
6865 /*
6866  * This entry point could be used later for arbitrary method
6867  * redirection.
6868  */
6869 inline static MonoInst*
6870 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6871                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6872 {
6873         if (method->klass == mono_defaults.string_class) {
6874                 /* managed string allocation support */
6875                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6876                         MonoInst *iargs [2];
6877                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6878                         MonoMethod *managed_alloc = NULL;
6879
6880                         g_assert (vtable); /*Should not fail since it System.String*/
6881 #ifndef MONO_CROSS_COMPILE
6882                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6883 #endif
6884                         if (!managed_alloc)
6885                                 return NULL;
6886                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6887                         iargs [1] = args [0];
6888                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6889                 }
6890         }
6891         return NULL;
6892 }
6893
6894 static void
6895 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6896 {
6897         MonoInst *store, *temp;
6898         int i;
6899
6900         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6901                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6902
6903                 /*
6904                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6905                  * would be different than the MonoInst's used to represent arguments, and
6906                  * the ldelema implementation can't deal with that.
6907                  * Solution: When ldelema is used on an inline argument, create a var for
6908                  * it, emit ldelema on that var, and emit the saving code below in
6909                  * inline_method () if needed.
6910                  */
6911                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6912                 cfg->args [i] = temp;
6913                 /* This uses cfg->args [i] which is set by the preceeding line */
6914                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6915                 store->cil_code = sp [0]->cil_code;
6916                 sp++;
6917         }
6918 }
6919
6920 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6921 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6922
6923 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6924 static gboolean
6925 check_inline_called_method_name_limit (MonoMethod *called_method)
6926 {
6927         int strncmp_result;
6928         static const char *limit = NULL;
6929
6930         if (limit == NULL) {
6931                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6932
6933                 if (limit_string != NULL)
6934                         limit = limit_string;
6935                 else
6936                         limit = "";
6937         }
6938
6939         if (limit [0] != '\0') {
6940                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6941
6942                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6943                 g_free (called_method_name);
6944
6945                 //return (strncmp_result <= 0);
6946                 return (strncmp_result == 0);
6947         } else {
6948                 return TRUE;
6949         }
6950 }
6951 #endif
6952
6953 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6954 static gboolean
6955 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6956 {
6957         int strncmp_result;
6958         static const char *limit = NULL;
6959
6960         if (limit == NULL) {
6961                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6962                 if (limit_string != NULL) {
6963                         limit = limit_string;
6964                 } else {
6965                         limit = "";
6966                 }
6967         }
6968
6969         if (limit [0] != '\0') {
6970                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6971
6972                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6973                 g_free (caller_method_name);
6974
6975                 //return (strncmp_result <= 0);
6976                 return (strncmp_result == 0);
6977         } else {
6978                 return TRUE;
6979         }
6980 }
6981 #endif
6982
6983 static void
6984 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6985 {
6986         static double r8_0 = 0.0;
6987         static float r4_0 = 0.0;
6988         MonoInst *ins;
6989         int t;
6990
6991         rtype = mini_get_underlying_type (rtype);
6992         t = rtype->type;
6993
6994         if (rtype->byref) {
6995                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6996         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6997                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6998         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6999                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
7000         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7001                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7002                 ins->type = STACK_R4;
7003                 ins->inst_p0 = (void*)&r4_0;
7004                 ins->dreg = dreg;
7005                 MONO_ADD_INS (cfg->cbb, ins);
7006         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7007                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7008                 ins->type = STACK_R8;
7009                 ins->inst_p0 = (void*)&r8_0;
7010                 ins->dreg = dreg;
7011                 MONO_ADD_INS (cfg->cbb, ins);
7012         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7013                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7014                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7015         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7016                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7017         } else {
7018                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7019         }
7020 }
7021
7022 static void
7023 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7024 {
7025         int t;
7026
7027         rtype = mini_get_underlying_type (rtype);
7028         t = rtype->type;
7029
7030         if (rtype->byref) {
7031                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7032         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7033                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7034         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7035                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7036         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7037                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7038         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7039                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7040         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7041                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7042                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7043         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7044                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7045         } else {
7046                 emit_init_rvar (cfg, dreg, rtype);
7047         }
7048 }
7049
7050 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7051 static void
7052 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7053 {
7054         MonoInst *var = cfg->locals [local];
7055         if (COMPILE_SOFT_FLOAT (cfg)) {
7056                 MonoInst *store;
7057                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7058                 emit_init_rvar (cfg, reg, type);
7059                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7060         } else {
7061                 if (init)
7062                         emit_init_rvar (cfg, var->dreg, type);
7063                 else
7064                         emit_dummy_init_rvar (cfg, var->dreg, type);
7065         }
7066 }
7067
7068 /*
7069  * inline_method:
7070  *
7071  *   Return the cost of inlining CMETHOD.
7072  */
7073 static int
7074 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7075                            guchar *ip, guint real_offset, gboolean inline_always)
7076 {
7077         MonoError error;
7078         MonoInst *ins, *rvar = NULL;
7079         MonoMethodHeader *cheader;
7080         MonoBasicBlock *ebblock, *sbblock;
7081         int i, costs;
7082         MonoMethod *prev_inlined_method;
7083         MonoInst **prev_locals, **prev_args;
7084         MonoType **prev_arg_types;
7085         guint prev_real_offset;
7086         GHashTable *prev_cbb_hash;
7087         MonoBasicBlock **prev_cil_offset_to_bb;
7088         MonoBasicBlock *prev_cbb;
7089         unsigned char* prev_cil_start;
7090         guint32 prev_cil_offset_to_bb_len;
7091         MonoMethod *prev_current_method;
7092         MonoGenericContext *prev_generic_context;
7093         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7094
7095         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7096
7097 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7098         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7099                 return 0;
7100 #endif
7101 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7102         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7103                 return 0;
7104 #endif
7105
7106         if (!fsig)
7107                 fsig = mono_method_signature (cmethod);
7108
7109         if (cfg->verbose_level > 2)
7110                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7111
7112         if (!cmethod->inline_info) {
7113                 cfg->stat_inlineable_methods++;
7114                 cmethod->inline_info = 1;
7115         }
7116
7117         /* allocate local variables */
7118         cheader = mono_method_get_header_checked (cmethod, &error);
7119         if (!cheader) {
7120                 if (inline_always) {
7121                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7122                         mono_error_move (&cfg->error, &error);
7123                 } else {
7124                         mono_error_cleanup (&error);
7125                 }
7126                 return 0;
7127         }
7128
7129         /*Must verify before creating locals as it can cause the JIT to assert.*/
7130         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7131                 mono_metadata_free_mh (cheader);
7132                 return 0;
7133         }
7134
7135         /* allocate space to store the return value */
7136         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7137                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7138         }
7139
7140         prev_locals = cfg->locals;
7141         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7142         for (i = 0; i < cheader->num_locals; ++i)
7143                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7144
7145         /* allocate start and end blocks */
7146         /* This is needed so if the inline is aborted, we can clean up */
7147         NEW_BBLOCK (cfg, sbblock);
7148         sbblock->real_offset = real_offset;
7149
7150         NEW_BBLOCK (cfg, ebblock);
7151         ebblock->block_num = cfg->num_bblocks++;
7152         ebblock->real_offset = real_offset;
7153
7154         prev_args = cfg->args;
7155         prev_arg_types = cfg->arg_types;
7156         prev_inlined_method = cfg->inlined_method;
7157         cfg->inlined_method = cmethod;
7158         cfg->ret_var_set = FALSE;
7159         cfg->inline_depth ++;
7160         prev_real_offset = cfg->real_offset;
7161         prev_cbb_hash = cfg->cbb_hash;
7162         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7163         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7164         prev_cil_start = cfg->cil_start;
7165         prev_cbb = cfg->cbb;
7166         prev_current_method = cfg->current_method;
7167         prev_generic_context = cfg->generic_context;
7168         prev_ret_var_set = cfg->ret_var_set;
7169         prev_disable_inline = cfg->disable_inline;
7170
7171         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7172                 virtual_ = TRUE;
7173
7174         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7175
7176         ret_var_set = cfg->ret_var_set;
7177
7178         cfg->inlined_method = prev_inlined_method;
7179         cfg->real_offset = prev_real_offset;
7180         cfg->cbb_hash = prev_cbb_hash;
7181         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7182         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7183         cfg->cil_start = prev_cil_start;
7184         cfg->locals = prev_locals;
7185         cfg->args = prev_args;
7186         cfg->arg_types = prev_arg_types;
7187         cfg->current_method = prev_current_method;
7188         cfg->generic_context = prev_generic_context;
7189         cfg->ret_var_set = prev_ret_var_set;
7190         cfg->disable_inline = prev_disable_inline;
7191         cfg->inline_depth --;
7192
7193         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7194                 if (cfg->verbose_level > 2)
7195                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7196
7197                 cfg->stat_inlined_methods++;
7198
7199                 /* always add some code to avoid block split failures */
7200                 MONO_INST_NEW (cfg, ins, OP_NOP);
7201                 MONO_ADD_INS (prev_cbb, ins);
7202
7203                 prev_cbb->next_bb = sbblock;
7204                 link_bblock (cfg, prev_cbb, sbblock);
7205
7206                 /*
7207                  * Get rid of the begin and end bblocks if possible to aid local
7208                  * optimizations.
7209                  */
7210                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7211
7212                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7213                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7214
7215                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7216                         MonoBasicBlock *prev = ebblock->in_bb [0];
7217
7218                         if (prev->next_bb == ebblock) {
7219                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7220                                 cfg->cbb = prev;
7221                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7222                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7223                                         cfg->cbb = prev_cbb;
7224                                 }
7225                         } else {
7226                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7227                                 cfg->cbb = ebblock;
7228                         }
7229                 } else {
7230                         /*
7231                          * Its possible that the rvar is set in some prev bblock, but not in others.
7232                          * (#1835).
7233                          */
7234                         if (rvar) {
7235                                 MonoBasicBlock *bb;
7236
7237                                 for (i = 0; i < ebblock->in_count; ++i) {
7238                                         bb = ebblock->in_bb [i];
7239
7240                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7241                                                 cfg->cbb = bb;
7242
7243                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7244                                         }
7245                                 }
7246                         }
7247
7248                         cfg->cbb = ebblock;
7249                 }
7250
7251                 if (rvar) {
7252                         /*
7253                          * If the inlined method contains only a throw, then the ret var is not
7254                          * set, so set it to a dummy value.
7255                          */
7256                         if (!ret_var_set)
7257                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7258
7259                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7260                         *sp++ = ins;
7261                 }
7262                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7263                 return costs + 1;
7264         } else {
7265                 if (cfg->verbose_level > 2)
7266                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7267                 cfg->exception_type = MONO_EXCEPTION_NONE;
7268
7269                 /* This gets rid of the newly added bblocks */
7270                 cfg->cbb = prev_cbb;
7271         }
7272         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7273         return 0;
7274 }
7275
7276 /*
7277  * Some of these comments may well be out-of-date.
7278  * Design decisions: we do a single pass over the IL code (and we do bblock
7279  * splitting/merging in the few cases when it's required: a back jump to an IL
7280  * address that was not already seen as bblock starting point).
7281  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7282  * Complex operations are decomposed in simpler ones right away. We need to let the
7283  * arch-specific code peek and poke inside this process somehow (except when the
7284  * optimizations can take advantage of the full semantic info of coarse opcodes).
7285  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7286  * MonoInst->opcode initially is the IL opcode or some simplification of that
7287  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7288  * opcode with value bigger than OP_LAST.
7289  * At this point the IR can be handed over to an interpreter, a dumb code generator
7290  * or to the optimizing code generator that will translate it to SSA form.
7291  *
7292  * Profiling directed optimizations.
7293  * We may compile by default with few or no optimizations and instrument the code
7294  * or the user may indicate what methods to optimize the most either in a config file
7295  * or through repeated runs where the compiler applies offline the optimizations to
7296  * each method and then decides if it was worth it.
7297  */
7298
7299 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7300 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7301 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7302 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7303 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7304 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7305 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7306 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7307
7308 /* offset from br.s -> br like opcodes */
7309 #define BIG_BRANCH_OFFSET 13
7310
7311 static gboolean
7312 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7313 {
7314         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7315
7316         return b == NULL || b == bb;
7317 }
7318
7319 static int
7320 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7321 {
7322         unsigned char *ip = start;
7323         unsigned char *target;
7324         int i;
7325         guint cli_addr;
7326         MonoBasicBlock *bblock;
7327         const MonoOpcode *opcode;
7328
7329         while (ip < end) {
7330                 cli_addr = ip - start;
7331                 i = mono_opcode_value ((const guint8 **)&ip, end);
7332                 if (i < 0)
7333                         UNVERIFIED;
7334                 opcode = &mono_opcodes [i];
7335                 switch (opcode->argument) {
7336                 case MonoInlineNone:
7337                         ip++;
7338                         break;
7339                 case MonoInlineString:
7340                 case MonoInlineType:
7341                 case MonoInlineField:
7342                 case MonoInlineMethod:
7343                 case MonoInlineTok:
7344                 case MonoInlineSig:
7345                 case MonoShortInlineR:
7346                 case MonoInlineI:
7347                         ip += 5;
7348                         break;
7349                 case MonoInlineVar:
7350                         ip += 3;
7351                         break;
7352                 case MonoShortInlineVar:
7353                 case MonoShortInlineI:
7354                         ip += 2;
7355                         break;
7356                 case MonoShortInlineBrTarget:
7357                         target = start + cli_addr + 2 + (signed char)ip [1];
7358                         GET_BBLOCK (cfg, bblock, target);
7359                         ip += 2;
7360                         if (ip < end)
7361                                 GET_BBLOCK (cfg, bblock, ip);
7362                         break;
7363                 case MonoInlineBrTarget:
7364                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7365                         GET_BBLOCK (cfg, bblock, target);
7366                         ip += 5;
7367                         if (ip < end)
7368                                 GET_BBLOCK (cfg, bblock, ip);
7369                         break;
7370                 case MonoInlineSwitch: {
7371                         guint32 n = read32 (ip + 1);
7372                         guint32 j;
7373                         ip += 5;
7374                         cli_addr += 5 + 4 * n;
7375                         target = start + cli_addr;
7376                         GET_BBLOCK (cfg, bblock, target);
7377
7378                         for (j = 0; j < n; ++j) {
7379                                 target = start + cli_addr + (gint32)read32 (ip);
7380                                 GET_BBLOCK (cfg, bblock, target);
7381                                 ip += 4;
7382                         }
7383                         break;
7384                 }
7385                 case MonoInlineR:
7386                 case MonoInlineI8:
7387                         ip += 9;
7388                         break;
7389                 default:
7390                         g_assert_not_reached ();
7391                 }
7392
7393                 if (i == CEE_THROW) {
7394                         unsigned char *bb_start = ip - 1;
7395
7396                         /* Find the start of the bblock containing the throw */
7397                         bblock = NULL;
7398                         while ((bb_start >= start) && !bblock) {
7399                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7400                                 bb_start --;
7401                         }
7402                         if (bblock)
7403                                 bblock->out_of_line = 1;
7404                 }
7405         }
7406         return 0;
7407 unverified:
7408 exception_exit:
7409         *pos = ip;
7410         return 1;
7411 }
7412
7413 static inline MonoMethod *
7414 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7415 {
7416         MonoMethod *method;
7417
7418         mono_error_init (error);
7419
7420         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7421                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7422                 if (context) {
7423                         method = mono_class_inflate_generic_method_checked (method, context, error);
7424                 }
7425         } else {
7426                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7427         }
7428
7429         return method;
7430 }
7431
7432 static inline MonoMethod *
7433 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7434 {
7435         MonoError error;
7436         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7437
7438         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7439                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7440                 method = NULL;
7441         }
7442
7443         if (!method && !cfg)
7444                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7445
7446         return method;
7447 }
7448
7449 static inline MonoClass*
7450 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7451 {
7452         MonoError error;
7453         MonoClass *klass;
7454
7455         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7456                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7457                 if (context) {
7458                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7459                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7460                 }
7461         } else {
7462                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7463                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7464         }
7465         if (klass)
7466                 mono_class_init (klass);
7467         return klass;
7468 }
7469
7470 static inline MonoMethodSignature*
7471 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
7472 {
7473         MonoMethodSignature *fsig;
7474
7475         mono_error_init (error);
7476         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7477                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7478         } else {
7479                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
7480                 return_val_if_nok (error, NULL);
7481         }
7482         if (context) {
7483                 fsig = mono_inflate_generic_signature(fsig, context, error);
7484         }
7485         return fsig;
7486 }
7487
7488 static MonoMethod*
7489 throw_exception (void)
7490 {
7491         static MonoMethod *method = NULL;
7492
7493         if (!method) {
7494                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7495                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7496         }
7497         g_assert (method);
7498         return method;
7499 }
7500
7501 static void
7502 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7503 {
7504         MonoMethod *thrower = throw_exception ();
7505         MonoInst *args [1];
7506
7507         EMIT_NEW_PCONST (cfg, args [0], ex);
7508         mono_emit_method_call (cfg, thrower, args, NULL);
7509 }
7510
7511 /*
7512  * Return the original method is a wrapper is specified. We can only access
7513  * the custom attributes from the original method.
7514  */
7515 static MonoMethod*
7516 get_original_method (MonoMethod *method)
7517 {
7518         if (method->wrapper_type == MONO_WRAPPER_NONE)
7519                 return method;
7520
7521         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7522         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7523                 return NULL;
7524
7525         /* in other cases we need to find the original method */
7526         return mono_marshal_method_from_wrapper (method);
7527 }
7528
7529 static void
7530 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7531 {
7532         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7533         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7534         if (ex)
7535                 emit_throw_exception (cfg, ex);
7536 }
7537
7538 static void
7539 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7540 {
7541         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7542         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7543         if (ex)
7544                 emit_throw_exception (cfg, ex);
7545 }
7546
7547 /*
7548  * Check that the IL instructions at ip are the array initialization
7549  * sequence and return the pointer to the data and the size.
7550  */
7551 static const char*
7552 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7553 {
7554         /*
7555          * newarr[System.Int32]
7556          * dup
7557          * ldtoken field valuetype ...
7558          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7559          */
7560         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7561                 MonoError error;
7562                 guint32 token = read32 (ip + 7);
7563                 guint32 field_token = read32 (ip + 2);
7564                 guint32 field_index = field_token & 0xffffff;
7565                 guint32 rva;
7566                 const char *data_ptr;
7567                 int size = 0;
7568                 MonoMethod *cmethod;
7569                 MonoClass *dummy_class;
7570                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7571                 int dummy_align;
7572
7573                 if (!field) {
7574                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7575                         return NULL;
7576                 }
7577
7578                 *out_field_token = field_token;
7579
7580                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7581                 if (!cmethod)
7582                         return NULL;
7583                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7584                         return NULL;
7585                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7586                 case MONO_TYPE_BOOLEAN:
7587                 case MONO_TYPE_I1:
7588                 case MONO_TYPE_U1:
7589                         size = 1; break;
7590                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7591 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7592                 case MONO_TYPE_CHAR:
7593                 case MONO_TYPE_I2:
7594                 case MONO_TYPE_U2:
7595                         size = 2; break;
7596                 case MONO_TYPE_I4:
7597                 case MONO_TYPE_U4:
7598                 case MONO_TYPE_R4:
7599                         size = 4; break;
7600                 case MONO_TYPE_R8:
7601                 case MONO_TYPE_I8:
7602                 case MONO_TYPE_U8:
7603                         size = 8; break;
7604 #endif
7605                 default:
7606                         return NULL;
7607                 }
7608                 size *= len;
7609                 if (size > mono_type_size (field->type, &dummy_align))
7610                     return NULL;
7611                 *out_size = size;
7612                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7613                 if (!image_is_dynamic (method->klass->image)) {
7614                         field_index = read32 (ip + 2) & 0xffffff;
7615                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7616                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7617                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7618                         /* for aot code we do the lookup on load */
7619                         if (aot && data_ptr)
7620                                 return (const char *)GUINT_TO_POINTER (rva);
7621                 } else {
7622                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7623                         g_assert (!aot);
7624                         data_ptr = mono_field_get_data (field);
7625                 }
7626                 return data_ptr;
7627         }
7628         return NULL;
7629 }
7630
7631 static void
7632 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7633 {
7634         MonoError error;
7635         char *method_fname = mono_method_full_name (method, TRUE);
7636         char *method_code;
7637         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7638
7639         if (!header) {
7640                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7641                 mono_error_cleanup (&error);
7642         } else if (header->code_size == 0)
7643                 method_code = g_strdup ("method body is empty.");
7644         else
7645                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7646         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7647         g_free (method_fname);
7648         g_free (method_code);
7649         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7650 }
7651
7652 static void
7653 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7654 {
7655         MonoInst *ins;
7656         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7657         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7658                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7659                 /* Optimize reg-reg moves away */
7660                 /*
7661                  * Can't optimize other opcodes, since sp[0] might point to
7662                  * the last ins of a decomposed opcode.
7663                  */
7664                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7665         } else {
7666                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7667         }
7668 }
7669
7670 /*
7671  * ldloca inhibits many optimizations so try to get rid of it in common
7672  * cases.
7673  */
7674 static inline unsigned char *
7675 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7676 {
7677         int local, token;
7678         MonoClass *klass;
7679         MonoType *type;
7680
7681         if (size == 1) {
7682                 local = ip [1];
7683                 ip += 2;
7684         } else {
7685                 local = read16 (ip + 2);
7686                 ip += 4;
7687         }
7688
7689         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7690                 /* From the INITOBJ case */
7691                 token = read32 (ip + 2);
7692                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7693                 CHECK_TYPELOAD (klass);
7694                 type = mini_get_underlying_type (&klass->byval_arg);
7695                 emit_init_local (cfg, local, type, TRUE);
7696                 return ip + 6;
7697         }
7698  exception_exit:
7699         return NULL;
7700 }
7701
7702 static MonoInst*
7703 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7704 {
7705         MonoInst *icall_args [16];
7706         MonoInst *call_target, *ins, *vtable_ins;
7707         int arg_reg, this_reg, vtable_reg;
7708         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7709         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7710         gboolean variant_iface = FALSE;
7711         guint32 slot;
7712         int offset;
7713
7714         /*
7715          * In llvm-only mode, vtables contain function descriptors instead of
7716          * method addresses/trampolines.
7717          */
7718         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7719
7720         if (is_iface)
7721                 slot = mono_method_get_imt_slot (cmethod);
7722         else
7723                 slot = mono_method_get_vtable_index (cmethod);
7724
7725         this_reg = sp [0]->dreg;
7726
7727         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7728                 variant_iface = TRUE;
7729
7730         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7731                 /*
7732                  * The simplest case, a normal virtual call.
7733                  */
7734                 int slot_reg = alloc_preg (cfg);
7735                 int addr_reg = alloc_preg (cfg);
7736                 int arg_reg = alloc_preg (cfg);
7737                 MonoBasicBlock *non_null_bb;
7738
7739                 vtable_reg = alloc_preg (cfg);
7740                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7741                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7742
7743                 /* Load the vtable slot, which contains a function descriptor. */
7744                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7745
7746                 NEW_BBLOCK (cfg, non_null_bb);
7747
7748                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7749                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7750                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7751
7752                 /* Slow path */
7753                 // FIXME: Make the wrapper use the preserveall cconv
7754                 // FIXME: Use one icall per slot for small slot numbers ?
7755                 icall_args [0] = vtable_ins;
7756                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7757                 /* Make the icall return the vtable slot value to save some code space */
7758                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7759                 ins->dreg = slot_reg;
7760                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7761
7762                 /* Fastpath */
7763                 MONO_START_BB (cfg, non_null_bb);
7764                 /* Load the address + arg from the vtable slot */
7765                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7766                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7767
7768                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7769         }
7770
7771         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7772                 /*
7773                  * A simple interface call
7774                  *
7775                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7776                  * The imt slot contains a function descriptor for a runtime function + arg.
7777                  */
7778                 int slot_reg = alloc_preg (cfg);
7779                 int addr_reg = alloc_preg (cfg);
7780                 int arg_reg = alloc_preg (cfg);
7781                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7782
7783                 vtable_reg = alloc_preg (cfg);
7784                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7785                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7786
7787                 /*
7788                  * The slot is already initialized when the vtable is created so there is no need
7789                  * to check it here.
7790                  */
7791
7792                 /* Load the imt slot, which contains a function descriptor. */
7793                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7794
7795                 /* Load the address + arg of the imt thunk from the imt slot */
7796                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7797                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7798                 /*
7799                  * IMT thunks in llvm-only mode are C functions which take an info argument
7800                  * plus the imt method and return the ftndesc to call.
7801                  */
7802                 icall_args [0] = thunk_arg_ins;
7803                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7804                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7805                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7806
7807                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7808         }
7809
7810         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7811                 /*
7812                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7813                  * dynamically extended as more instantiations are discovered.
7814                  * This handles generic virtual methods both on classes and interfaces.
7815                  */
7816                 int slot_reg = alloc_preg (cfg);
7817                 int addr_reg = alloc_preg (cfg);
7818                 int arg_reg = alloc_preg (cfg);
7819                 int ftndesc_reg = alloc_preg (cfg);
7820                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7821                 MonoBasicBlock *slowpath_bb, *end_bb;
7822
7823                 NEW_BBLOCK (cfg, slowpath_bb);
7824                 NEW_BBLOCK (cfg, end_bb);
7825
7826                 vtable_reg = alloc_preg (cfg);
7827                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7828                 if (is_iface)
7829                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7830                 else
7831                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7832
7833                 /* Load the slot, which contains a function descriptor. */
7834                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7835
7836                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7837                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7838                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7839                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7840
7841                 /* Fastpath */
7842                 /* Same as with iface calls */
7843                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7844                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7845                 icall_args [0] = thunk_arg_ins;
7846                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7847                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7848                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7849                 ftndesc_ins->dreg = ftndesc_reg;
7850                 /*
7851                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7852                  * they don't know about yet. Fall back to the slowpath in that case.
7853                  */
7854                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7855                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7856
7857                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7858
7859                 /* Slowpath */
7860                 MONO_START_BB (cfg, slowpath_bb);
7861                 icall_args [0] = vtable_ins;
7862                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7863                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7864                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7865                 if (is_iface)
7866                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7867                 else
7868                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7869                 ftndesc_ins->dreg = ftndesc_reg;
7870                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7871
7872                 /* Common case */
7873                 MONO_START_BB (cfg, end_bb);
7874                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7875         }
7876
7877         /*
7878          * Non-optimized cases
7879          */
7880         icall_args [0] = sp [0];
7881         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7882
7883         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7884                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7885
7886         arg_reg = alloc_preg (cfg);
7887         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7888         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7889
7890         g_assert (is_gsharedvt);
7891         if (is_iface)
7892                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7893         else
7894                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7895
7896         /*
7897          * Pass the extra argument even if the callee doesn't receive it, most
7898          * calling conventions allow this.
7899          */
7900         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7901 }
7902
7903 static gboolean
7904 is_exception_class (MonoClass *klass)
7905 {
7906         while (klass) {
7907                 if (klass == mono_defaults.exception_class)
7908                         return TRUE;
7909                 klass = klass->parent;
7910         }
7911         return FALSE;
7912 }
7913
7914 /*
7915  * is_jit_optimizer_disabled:
7916  *
7917  *   Determine whenever M's assembly has a DebuggableAttribute with the
7918  * IsJITOptimizerDisabled flag set.
7919  */
7920 static gboolean
7921 is_jit_optimizer_disabled (MonoMethod *m)
7922 {
7923         MonoError error;
7924         MonoAssembly *ass = m->klass->image->assembly;
7925         MonoCustomAttrInfo* attrs;
7926         MonoClass *klass;
7927         int i;
7928         gboolean val = FALSE;
7929
7930         g_assert (ass);
7931         if (ass->jit_optimizer_disabled_inited)
7932                 return ass->jit_optimizer_disabled;
7933
7934         klass = mono_class_try_get_debuggable_attribute_class ();
7935
7936         if (!klass) {
7937                 /* Linked away */
7938                 ass->jit_optimizer_disabled = FALSE;
7939                 mono_memory_barrier ();
7940                 ass->jit_optimizer_disabled_inited = TRUE;
7941                 return FALSE;
7942         }
7943
7944         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7945         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7946         if (attrs) {
7947                 for (i = 0; i < attrs->num_attrs; ++i) {
7948                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7949                         const gchar *p;
7950                         MonoMethodSignature *sig;
7951
7952                         if (!attr->ctor || attr->ctor->klass != klass)
7953                                 continue;
7954                         /* Decode the attribute. See reflection.c */
7955                         p = (const char*)attr->data;
7956                         g_assert (read16 (p) == 0x0001);
7957                         p += 2;
7958
7959                         // FIXME: Support named parameters
7960                         sig = mono_method_signature (attr->ctor);
7961                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7962                                 continue;
7963                         /* Two boolean arguments */
7964                         p ++;
7965                         val = *p;
7966                 }
7967                 mono_custom_attrs_free (attrs);
7968         }
7969
7970         ass->jit_optimizer_disabled = val;
7971         mono_memory_barrier ();
7972         ass->jit_optimizer_disabled_inited = TRUE;
7973
7974         return val;
7975 }
7976
7977 static gboolean
7978 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7979 {
7980         gboolean supported_tail_call;
7981         int i;
7982
7983         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7984
7985         for (i = 0; i < fsig->param_count; ++i) {
7986                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7987                         /* These can point to the current method's stack */
7988                         supported_tail_call = FALSE;
7989         }
7990         if (fsig->hasthis && cmethod->klass->valuetype)
7991                 /* this might point to the current method's stack */
7992                 supported_tail_call = FALSE;
7993         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7994                 supported_tail_call = FALSE;
7995         if (cfg->method->save_lmf)
7996                 supported_tail_call = FALSE;
7997         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7998                 supported_tail_call = FALSE;
7999         if (call_opcode != CEE_CALL)
8000                 supported_tail_call = FALSE;
8001
8002         /* Debugging support */
8003 #if 0
8004         if (supported_tail_call) {
8005                 if (!mono_debug_count ())
8006                         supported_tail_call = FALSE;
8007         }
8008 #endif
8009
8010         return supported_tail_call;
8011 }
8012
8013 /*
8014  * handle_ctor_call:
8015  *
8016  *   Handle calls made to ctors from NEWOBJ opcodes.
8017  */
8018 static void
8019 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8020                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8021 {
8022         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8023
8024         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8025                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8026                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8027                         mono_class_vtable (cfg->domain, cmethod->klass);
8028                         CHECK_TYPELOAD (cmethod->klass);
8029
8030                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8031                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8032                 } else {
8033                         if (context_used) {
8034                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8035                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8036                         } else {
8037                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8038
8039                                 CHECK_TYPELOAD (cmethod->klass);
8040                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8041                         }
8042                 }
8043         }
8044
8045         /* Avoid virtual calls to ctors if possible */
8046         if (mono_class_is_marshalbyref (cmethod->klass))
8047                 callvirt_this_arg = sp [0];
8048
8049         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8050                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8051                 CHECK_CFG_EXCEPTION;
8052         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8053                            mono_method_check_inlining (cfg, cmethod) &&
8054                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8055                 int costs;
8056
8057                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8058                         cfg->real_offset += 5;
8059
8060                         *inline_costs += costs - 5;
8061                 } else {
8062                         INLINE_FAILURE ("inline failure");
8063                         // FIXME-VT: Clean this up
8064                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8065                                 GSHAREDVT_FAILURE(*ip);
8066                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8067                 }
8068         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8069                 MonoInst *addr;
8070
8071                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8072
8073                 if (cfg->llvm_only) {
8074                         // FIXME: Avoid initializing vtable_arg
8075                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8076                 } else {
8077                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8078                 }
8079         } else if (context_used &&
8080                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8081                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8082                 MonoInst *cmethod_addr;
8083
8084                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8085
8086                 if (cfg->llvm_only) {
8087                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8088                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8089                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8090                 } else {
8091                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8092                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8093
8094                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8095                 }
8096         } else {
8097                 INLINE_FAILURE ("ctor call");
8098                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8099                                                                                   callvirt_this_arg, NULL, vtable_arg);
8100         }
8101  exception_exit:
8102         return;
8103 }
8104
8105 static void
8106 emit_setret (MonoCompile *cfg, MonoInst *val)
8107 {
8108         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8109         MonoInst *ins;
8110
8111         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8112                 MonoInst *ret_addr;
8113
8114                 if (!cfg->vret_addr) {
8115                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8116                 } else {
8117                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8118
8119                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8120                         ins->klass = mono_class_from_mono_type (ret_type);
8121                 }
8122         } else {
8123 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8124                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8125                         MonoInst *iargs [1];
8126                         MonoInst *conv;
8127
8128                         iargs [0] = val;
8129                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8130                         mono_arch_emit_setret (cfg, cfg->method, conv);
8131                 } else {
8132                         mono_arch_emit_setret (cfg, cfg->method, val);
8133                 }
8134 #else
8135                 mono_arch_emit_setret (cfg, cfg->method, val);
8136 #endif
8137         }
8138 }
8139
8140 /*
8141  * mono_method_to_ir:
8142  *
8143  *   Translate the .net IL into linear IR.
8144  */
8145 int
8146 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8147                    MonoInst *return_var, MonoInst **inline_args,
8148                    guint inline_offset, gboolean is_virtual_call)
8149 {
8150         MonoError error;
8151         MonoInst *ins, **sp, **stack_start;
8152         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8153         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8154         MonoMethod *cmethod, *method_definition;
8155         MonoInst **arg_array;
8156         MonoMethodHeader *header;
8157         MonoImage *image;
8158         guint32 token, ins_flag;
8159         MonoClass *klass;
8160         MonoClass *constrained_class = NULL;
8161         unsigned char *ip, *end, *target, *err_pos;
8162         MonoMethodSignature *sig;
8163         MonoGenericContext *generic_context = NULL;
8164         MonoGenericContainer *generic_container = NULL;
8165         MonoType **param_types;
8166         int i, n, start_new_bblock, dreg;
8167         int num_calls = 0, inline_costs = 0;
8168         int breakpoint_id = 0;
8169         guint num_args;
8170         GSList *class_inits = NULL;
8171         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8172         int context_used;
8173         gboolean init_locals, seq_points, skip_dead_blocks;
8174         gboolean sym_seq_points = FALSE;
8175         MonoDebugMethodInfo *minfo;
8176         MonoBitSet *seq_point_locs = NULL;
8177         MonoBitSet *seq_point_set_locs = NULL;
8178
8179         cfg->disable_inline = is_jit_optimizer_disabled (method);
8180
8181         /* serialization and xdomain stuff may need access to private fields and methods */
8182         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8183         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8184         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8185         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8186         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8187         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8188
8189         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8190         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8191         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8192         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8193         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8194
8195         image = method->klass->image;
8196         header = mono_method_get_header_checked (method, &cfg->error);
8197         if (!header) {
8198                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8199                 goto exception_exit;
8200         }
8201         generic_container = mono_method_get_generic_container (method);
8202         sig = mono_method_signature (method);
8203         num_args = sig->hasthis + sig->param_count;
8204         ip = (unsigned char*)header->code;
8205         cfg->cil_start = ip;
8206         end = ip + header->code_size;
8207         cfg->stat_cil_code_size += header->code_size;
8208
8209         seq_points = cfg->gen_seq_points && cfg->method == method;
8210
8211         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8212                 /* We could hit a seq point before attaching to the JIT (#8338) */
8213                 seq_points = FALSE;
8214         }
8215
8216         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8217                 minfo = mono_debug_lookup_method (method);
8218                 if (minfo) {
8219                         MonoSymSeqPoint *sps;
8220                         int i, n_il_offsets;
8221
8222                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8223                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8224                         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);
8225                         sym_seq_points = TRUE;
8226                         for (i = 0; i < n_il_offsets; ++i) {
8227                                 if (sps [i].il_offset < header->code_size)
8228                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8229                         }
8230                         g_free (sps);
8231                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8232                         /* Methods without line number info like auto-generated property accessors */
8233                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8234                         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);
8235                         sym_seq_points = TRUE;
8236                 }
8237         }
8238
8239         /*
8240          * Methods without init_locals set could cause asserts in various passes
8241          * (#497220). To work around this, we emit dummy initialization opcodes
8242          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8243          * on some platforms.
8244          */
8245         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8246                 init_locals = header->init_locals;
8247         else
8248                 init_locals = TRUE;
8249
8250         method_definition = method;
8251         while (method_definition->is_inflated) {
8252                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8253                 method_definition = imethod->declaring;
8254         }
8255
8256         /* SkipVerification is not allowed if core-clr is enabled */
8257         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8258                 dont_verify = TRUE;
8259                 dont_verify_stloc = TRUE;
8260         }
8261
8262         if (sig->is_inflated)
8263                 generic_context = mono_method_get_context (method);
8264         else if (generic_container)
8265                 generic_context = &generic_container->context;
8266         cfg->generic_context = generic_context;
8267
8268         if (!cfg->gshared)
8269                 g_assert (!sig->has_type_parameters);
8270
8271         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8272                 g_assert (method->is_inflated);
8273                 g_assert (mono_method_get_context (method)->method_inst);
8274         }
8275         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8276                 g_assert (sig->generic_param_count);
8277
8278         if (cfg->method == method) {
8279                 cfg->real_offset = 0;
8280         } else {
8281                 cfg->real_offset = inline_offset;
8282         }
8283
8284         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8285         cfg->cil_offset_to_bb_len = header->code_size;
8286
8287         cfg->current_method = method;
8288
8289         if (cfg->verbose_level > 2)
8290                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8291
8292         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8293         if (sig->hasthis)
8294                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8295         for (n = 0; n < sig->param_count; ++n)
8296                 param_types [n + sig->hasthis] = sig->params [n];
8297         cfg->arg_types = param_types;
8298
8299         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8300         if (cfg->method == method) {
8301
8302                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8303                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8304
8305                 /* ENTRY BLOCK */
8306                 NEW_BBLOCK (cfg, start_bblock);
8307                 cfg->bb_entry = start_bblock;
8308                 start_bblock->cil_code = NULL;
8309                 start_bblock->cil_length = 0;
8310
8311                 /* EXIT BLOCK */
8312                 NEW_BBLOCK (cfg, end_bblock);
8313                 cfg->bb_exit = end_bblock;
8314                 end_bblock->cil_code = NULL;
8315                 end_bblock->cil_length = 0;
8316                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8317                 g_assert (cfg->num_bblocks == 2);
8318
8319                 arg_array = cfg->args;
8320
8321                 if (header->num_clauses) {
8322                         cfg->spvars = g_hash_table_new (NULL, NULL);
8323                         cfg->exvars = g_hash_table_new (NULL, NULL);
8324                 }
8325                 /* handle exception clauses */
8326                 for (i = 0; i < header->num_clauses; ++i) {
8327                         MonoBasicBlock *try_bb;
8328                         MonoExceptionClause *clause = &header->clauses [i];
8329                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8330
8331                         try_bb->real_offset = clause->try_offset;
8332                         try_bb->try_start = TRUE;
8333                         try_bb->region = ((i + 1) << 8) | clause->flags;
8334                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8335                         tblock->real_offset = clause->handler_offset;
8336                         tblock->flags |= BB_EXCEPTION_HANDLER;
8337
8338                         /*
8339                          * Linking the try block with the EH block hinders inlining as we won't be able to
8340                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8341                          */
8342                         if (COMPILE_LLVM (cfg))
8343                                 link_bblock (cfg, try_bb, tblock);
8344
8345                         if (*(ip + clause->handler_offset) == CEE_POP)
8346                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8347
8348                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8349                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8350                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8351                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8352                                 MONO_ADD_INS (tblock, ins);
8353
8354                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8355                                         /* finally clauses already have a seq point */
8356                                         /* seq points for filter clauses are emitted below */
8357                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8358                                         MONO_ADD_INS (tblock, ins);
8359                                 }
8360
8361                                 /* todo: is a fault block unsafe to optimize? */
8362                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8363                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8364                         }
8365
8366                         /*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);
8367                           while (p < end) {
8368                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8369                           }*/
8370                         /* catch and filter blocks get the exception object on the stack */
8371                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8372                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8373
8374                                 /* mostly like handle_stack_args (), but just sets the input args */
8375                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8376                                 tblock->in_scount = 1;
8377                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8378                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8379
8380                                 cfg->cbb = tblock;
8381
8382 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8383                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8384                                 if (!cfg->compile_llvm) {
8385                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8386                                         ins->dreg = tblock->in_stack [0]->dreg;
8387                                         MONO_ADD_INS (tblock, ins);
8388                                 }
8389 #else
8390                                 MonoInst *dummy_use;
8391
8392                                 /*
8393                                  * Add a dummy use for the exvar so its liveness info will be
8394                                  * correct.
8395                                  */
8396                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8397 #endif
8398
8399                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8400                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8401                                         MONO_ADD_INS (tblock, ins);
8402                                 }
8403
8404                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8405                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8406                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8407                                         tblock->real_offset = clause->data.filter_offset;
8408                                         tblock->in_scount = 1;
8409                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8410                                         /* The filter block shares the exvar with the handler block */
8411                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8412                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8413                                         MONO_ADD_INS (tblock, ins);
8414                                 }
8415                         }
8416
8417                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8418                                         clause->data.catch_class &&
8419                                         cfg->gshared &&
8420                                         mono_class_check_context_used (clause->data.catch_class)) {
8421                                 /*
8422                                  * In shared generic code with catch
8423                                  * clauses containing type variables
8424                                  * the exception handling code has to
8425                                  * be able to get to the rgctx.
8426                                  * Therefore we have to make sure that
8427                                  * the vtable/mrgctx argument (for
8428                                  * static or generic methods) or the
8429                                  * "this" argument (for non-static
8430                                  * methods) are live.
8431                                  */
8432                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8433                                                 mini_method_get_context (method)->method_inst ||
8434                                                 method->klass->valuetype) {
8435                                         mono_get_vtable_var (cfg);
8436                                 } else {
8437                                         MonoInst *dummy_use;
8438
8439                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8440                                 }
8441                         }
8442                 }
8443         } else {
8444                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8445                 cfg->cbb = start_bblock;
8446                 cfg->args = arg_array;
8447                 mono_save_args (cfg, sig, inline_args);
8448         }
8449
8450         /* FIRST CODE BLOCK */
8451         NEW_BBLOCK (cfg, tblock);
8452         tblock->cil_code = ip;
8453         cfg->cbb = tblock;
8454         cfg->ip = ip;
8455
8456         ADD_BBLOCK (cfg, tblock);
8457
8458         if (cfg->method == method) {
8459                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8460                 if (breakpoint_id) {
8461                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8462                         MONO_ADD_INS (cfg->cbb, ins);
8463                 }
8464         }
8465
8466         /* we use a separate basic block for the initialization code */
8467         NEW_BBLOCK (cfg, init_localsbb);
8468         cfg->bb_init = init_localsbb;
8469         init_localsbb->real_offset = cfg->real_offset;
8470         start_bblock->next_bb = init_localsbb;
8471         init_localsbb->next_bb = cfg->cbb;
8472         link_bblock (cfg, start_bblock, init_localsbb);
8473         link_bblock (cfg, init_localsbb, cfg->cbb);
8474
8475         cfg->cbb = init_localsbb;
8476
8477         if (cfg->gsharedvt && cfg->method == method) {
8478                 MonoGSharedVtMethodInfo *info;
8479                 MonoInst *var, *locals_var;
8480                 int dreg;
8481
8482                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8483                 info->method = cfg->method;
8484                 info->count_entries = 16;
8485                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8486                 cfg->gsharedvt_info = info;
8487
8488                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8489                 /* prevent it from being register allocated */
8490                 //var->flags |= MONO_INST_VOLATILE;
8491                 cfg->gsharedvt_info_var = var;
8492
8493                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8494                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8495
8496                 /* Allocate locals */
8497                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8498                 /* prevent it from being register allocated */
8499                 //locals_var->flags |= MONO_INST_VOLATILE;
8500                 cfg->gsharedvt_locals_var = locals_var;
8501
8502                 dreg = alloc_ireg (cfg);
8503                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8504
8505                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8506                 ins->dreg = locals_var->dreg;
8507                 ins->sreg1 = dreg;
8508                 MONO_ADD_INS (cfg->cbb, ins);
8509                 cfg->gsharedvt_locals_var_ins = ins;
8510
8511                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8512                 /*
8513                 if (init_locals)
8514                         ins->flags |= MONO_INST_INIT;
8515                 */
8516         }
8517
8518         if (mono_security_core_clr_enabled ()) {
8519                 /* check if this is native code, e.g. an icall or a p/invoke */
8520                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8521                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8522                         if (wrapped) {
8523                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8524                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8525
8526                                 /* if this ia a native call then it can only be JITted from platform code */
8527                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8528                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8529                                                 MonoException *ex = icall ? mono_get_exception_security () :
8530                                                         mono_get_exception_method_access ();
8531                                                 emit_throw_exception (cfg, ex);
8532                                         }
8533                                 }
8534                         }
8535                 }
8536         }
8537
8538         CHECK_CFG_EXCEPTION;
8539
8540         if (header->code_size == 0)
8541                 UNVERIFIED;
8542
8543         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8544                 ip = err_pos;
8545                 UNVERIFIED;
8546         }
8547
8548         if (cfg->method == method)
8549                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8550
8551         for (n = 0; n < header->num_locals; ++n) {
8552                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8553                         UNVERIFIED;
8554         }
8555         class_inits = NULL;
8556
8557         /* We force the vtable variable here for all shared methods
8558            for the possibility that they might show up in a stack
8559            trace where their exact instantiation is needed. */
8560         if (cfg->gshared && method == cfg->method) {
8561                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8562                                 mini_method_get_context (method)->method_inst ||
8563                                 method->klass->valuetype) {
8564                         mono_get_vtable_var (cfg);
8565                 } else {
8566                         /* FIXME: Is there a better way to do this?
8567                            We need the variable live for the duration
8568                            of the whole method. */
8569                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8570                 }
8571         }
8572
8573         /* add a check for this != NULL to inlined methods */
8574         if (is_virtual_call) {
8575                 MonoInst *arg_ins;
8576
8577                 NEW_ARGLOAD (cfg, arg_ins, 0);
8578                 MONO_ADD_INS (cfg->cbb, arg_ins);
8579                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8580         }
8581
8582         skip_dead_blocks = !dont_verify;
8583         if (skip_dead_blocks) {
8584                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8585                 CHECK_CFG_ERROR;
8586                 g_assert (bb);
8587         }
8588
8589         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8590         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8591
8592         ins_flag = 0;
8593         start_new_bblock = 0;
8594         while (ip < end) {
8595                 if (cfg->method == method)
8596                         cfg->real_offset = ip - header->code;
8597                 else
8598                         cfg->real_offset = inline_offset;
8599                 cfg->ip = ip;
8600
8601                 context_used = 0;
8602
8603                 if (start_new_bblock) {
8604                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8605                         if (start_new_bblock == 2) {
8606                                 g_assert (ip == tblock->cil_code);
8607                         } else {
8608                                 GET_BBLOCK (cfg, tblock, ip);
8609                         }
8610                         cfg->cbb->next_bb = tblock;
8611                         cfg->cbb = tblock;
8612                         start_new_bblock = 0;
8613                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8614                                 if (cfg->verbose_level > 3)
8615                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8616                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8617                                 *sp++ = ins;
8618                         }
8619                         if (class_inits)
8620                                 g_slist_free (class_inits);
8621                         class_inits = NULL;
8622                 } else {
8623                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8624                                 link_bblock (cfg, cfg->cbb, tblock);
8625                                 if (sp != stack_start) {
8626                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8627                                         sp = stack_start;
8628                                         CHECK_UNVERIFIABLE (cfg);
8629                                 }
8630                                 cfg->cbb->next_bb = tblock;
8631                                 cfg->cbb = tblock;
8632                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8633                                         if (cfg->verbose_level > 3)
8634                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8635                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8636                                         *sp++ = ins;
8637                                 }
8638                                 g_slist_free (class_inits);
8639                                 class_inits = NULL;
8640                         }
8641                 }
8642
8643                 if (skip_dead_blocks) {
8644                         int ip_offset = ip - header->code;
8645
8646                         if (ip_offset == bb->end)
8647                                 bb = bb->next;
8648
8649                         if (bb->dead) {
8650                                 int op_size = mono_opcode_size (ip, end);
8651                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8652
8653                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8654
8655                                 if (ip_offset + op_size == bb->end) {
8656                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8657                                         MONO_ADD_INS (cfg->cbb, ins);
8658                                         start_new_bblock = 1;
8659                                 }
8660
8661                                 ip += op_size;
8662                                 continue;
8663                         }
8664                 }
8665                 /*
8666                  * Sequence points are points where the debugger can place a breakpoint.
8667                  * Currently, we generate these automatically at points where the IL
8668                  * stack is empty.
8669                  */
8670                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8671                         /*
8672                          * Make methods interruptable at the beginning, and at the targets of
8673                          * backward branches.
8674                          * Also, do this at the start of every bblock in methods with clauses too,
8675                          * to be able to handle instructions with inprecise control flow like
8676                          * throw/endfinally.
8677                          * Backward branches are handled at the end of method-to-ir ().
8678                          */
8679                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8680                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8681
8682                         /* Avoid sequence points on empty IL like .volatile */
8683                         // FIXME: Enable this
8684                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8685                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8686                         if ((sp != stack_start) && !sym_seq_point)
8687                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8688                         MONO_ADD_INS (cfg->cbb, ins);
8689
8690                         if (sym_seq_points)
8691                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8692                 }
8693
8694                 cfg->cbb->real_offset = cfg->real_offset;
8695
8696                 if ((cfg->method == method) && cfg->coverage_info) {
8697                         guint32 cil_offset = ip - header->code;
8698                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8699
8700                         /* TODO: Use an increment here */
8701 #if defined(TARGET_X86)
8702                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8703                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8704                         ins->inst_imm = 1;
8705                         MONO_ADD_INS (cfg->cbb, ins);
8706 #else
8707                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8708                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8709 #endif
8710                 }
8711
8712                 if (cfg->verbose_level > 3)
8713                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8714
8715                 switch (*ip) {
8716                 case CEE_NOP:
8717                         if (seq_points && !sym_seq_points && sp != stack_start) {
8718                                 /*
8719                                  * The C# compiler uses these nops to notify the JIT that it should
8720                                  * insert seq points.
8721                                  */
8722                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8723                                 MONO_ADD_INS (cfg->cbb, ins);
8724                         }
8725                         if (cfg->keep_cil_nops)
8726                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8727                         else
8728                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8729                         ip++;
8730                         MONO_ADD_INS (cfg->cbb, ins);
8731                         break;
8732                 case CEE_BREAK:
8733                         if (should_insert_brekpoint (cfg->method)) {
8734                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8735                         } else {
8736                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8737                         }
8738                         ip++;
8739                         MONO_ADD_INS (cfg->cbb, ins);
8740                         break;
8741                 case CEE_LDARG_0:
8742                 case CEE_LDARG_1:
8743                 case CEE_LDARG_2:
8744                 case CEE_LDARG_3:
8745                         CHECK_STACK_OVF (1);
8746                         n = (*ip)-CEE_LDARG_0;
8747                         CHECK_ARG (n);
8748                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8749                         ip++;
8750                         *sp++ = ins;
8751                         break;
8752                 case CEE_LDLOC_0:
8753                 case CEE_LDLOC_1:
8754                 case CEE_LDLOC_2:
8755                 case CEE_LDLOC_3:
8756                         CHECK_STACK_OVF (1);
8757                         n = (*ip)-CEE_LDLOC_0;
8758                         CHECK_LOCAL (n);
8759                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8760                         ip++;
8761                         *sp++ = ins;
8762                         break;
8763                 case CEE_STLOC_0:
8764                 case CEE_STLOC_1:
8765                 case CEE_STLOC_2:
8766                 case CEE_STLOC_3: {
8767                         CHECK_STACK (1);
8768                         n = (*ip)-CEE_STLOC_0;
8769                         CHECK_LOCAL (n);
8770                         --sp;
8771                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8772                                 UNVERIFIED;
8773                         emit_stloc_ir (cfg, sp, header, n);
8774                         ++ip;
8775                         inline_costs += 1;
8776                         break;
8777                         }
8778                 case CEE_LDARG_S:
8779                         CHECK_OPSIZE (2);
8780                         CHECK_STACK_OVF (1);
8781                         n = ip [1];
8782                         CHECK_ARG (n);
8783                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8784                         *sp++ = ins;
8785                         ip += 2;
8786                         break;
8787                 case CEE_LDARGA_S:
8788                         CHECK_OPSIZE (2);
8789                         CHECK_STACK_OVF (1);
8790                         n = ip [1];
8791                         CHECK_ARG (n);
8792                         NEW_ARGLOADA (cfg, ins, n);
8793                         MONO_ADD_INS (cfg->cbb, ins);
8794                         *sp++ = ins;
8795                         ip += 2;
8796                         break;
8797                 case CEE_STARG_S:
8798                         CHECK_OPSIZE (2);
8799                         CHECK_STACK (1);
8800                         --sp;
8801                         n = ip [1];
8802                         CHECK_ARG (n);
8803                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8804                                 UNVERIFIED;
8805                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8806                         ip += 2;
8807                         break;
8808                 case CEE_LDLOC_S:
8809                         CHECK_OPSIZE (2);
8810                         CHECK_STACK_OVF (1);
8811                         n = ip [1];
8812                         CHECK_LOCAL (n);
8813                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8814                         *sp++ = ins;
8815                         ip += 2;
8816                         break;
8817                 case CEE_LDLOCA_S: {
8818                         unsigned char *tmp_ip;
8819                         CHECK_OPSIZE (2);
8820                         CHECK_STACK_OVF (1);
8821                         CHECK_LOCAL (ip [1]);
8822
8823                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8824                                 ip = tmp_ip;
8825                                 inline_costs += 1;
8826                                 break;
8827                         }
8828
8829                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8830                         *sp++ = ins;
8831                         ip += 2;
8832                         break;
8833                 }
8834                 case CEE_STLOC_S:
8835                         CHECK_OPSIZE (2);
8836                         CHECK_STACK (1);
8837                         --sp;
8838                         CHECK_LOCAL (ip [1]);
8839                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8840                                 UNVERIFIED;
8841                         emit_stloc_ir (cfg, sp, header, ip [1]);
8842                         ip += 2;
8843                         inline_costs += 1;
8844                         break;
8845                 case CEE_LDNULL:
8846                         CHECK_STACK_OVF (1);
8847                         EMIT_NEW_PCONST (cfg, ins, NULL);
8848                         ins->type = STACK_OBJ;
8849                         ++ip;
8850                         *sp++ = ins;
8851                         break;
8852                 case CEE_LDC_I4_M1:
8853                         CHECK_STACK_OVF (1);
8854                         EMIT_NEW_ICONST (cfg, ins, -1);
8855                         ++ip;
8856                         *sp++ = ins;
8857                         break;
8858                 case CEE_LDC_I4_0:
8859                 case CEE_LDC_I4_1:
8860                 case CEE_LDC_I4_2:
8861                 case CEE_LDC_I4_3:
8862                 case CEE_LDC_I4_4:
8863                 case CEE_LDC_I4_5:
8864                 case CEE_LDC_I4_6:
8865                 case CEE_LDC_I4_7:
8866                 case CEE_LDC_I4_8:
8867                         CHECK_STACK_OVF (1);
8868                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8869                         ++ip;
8870                         *sp++ = ins;
8871                         break;
8872                 case CEE_LDC_I4_S:
8873                         CHECK_OPSIZE (2);
8874                         CHECK_STACK_OVF (1);
8875                         ++ip;
8876                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8877                         ++ip;
8878                         *sp++ = ins;
8879                         break;
8880                 case CEE_LDC_I4:
8881                         CHECK_OPSIZE (5);
8882                         CHECK_STACK_OVF (1);
8883                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8884                         ip += 5;
8885                         *sp++ = ins;
8886                         break;
8887                 case CEE_LDC_I8:
8888                         CHECK_OPSIZE (9);
8889                         CHECK_STACK_OVF (1);
8890                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8891                         ins->type = STACK_I8;
8892                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8893                         ++ip;
8894                         ins->inst_l = (gint64)read64 (ip);
8895                         MONO_ADD_INS (cfg->cbb, ins);
8896                         ip += 8;
8897                         *sp++ = ins;
8898                         break;
8899                 case CEE_LDC_R4: {
8900                         float *f;
8901                         gboolean use_aotconst = FALSE;
8902
8903 #ifdef TARGET_POWERPC
8904                         /* FIXME: Clean this up */
8905                         if (cfg->compile_aot)
8906                                 use_aotconst = TRUE;
8907 #endif
8908
8909                         /* FIXME: we should really allocate this only late in the compilation process */
8910                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8911                         CHECK_OPSIZE (5);
8912                         CHECK_STACK_OVF (1);
8913
8914                         if (use_aotconst) {
8915                                 MonoInst *cons;
8916                                 int dreg;
8917
8918                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8919
8920                                 dreg = alloc_freg (cfg);
8921                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8922                                 ins->type = cfg->r4_stack_type;
8923                         } else {
8924                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8925                                 ins->type = cfg->r4_stack_type;
8926                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8927                                 ins->inst_p0 = f;
8928                                 MONO_ADD_INS (cfg->cbb, ins);
8929                         }
8930                         ++ip;
8931                         readr4 (ip, f);
8932                         ip += 4;
8933                         *sp++ = ins;
8934                         break;
8935                 }
8936                 case CEE_LDC_R8: {
8937                         double *d;
8938                         gboolean use_aotconst = FALSE;
8939
8940 #ifdef TARGET_POWERPC
8941                         /* FIXME: Clean this up */
8942                         if (cfg->compile_aot)
8943                                 use_aotconst = TRUE;
8944 #endif
8945
8946                         /* FIXME: we should really allocate this only late in the compilation process */
8947                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8948                         CHECK_OPSIZE (9);
8949                         CHECK_STACK_OVF (1);
8950
8951                         if (use_aotconst) {
8952                                 MonoInst *cons;
8953                                 int dreg;
8954
8955                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8956
8957                                 dreg = alloc_freg (cfg);
8958                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8959                                 ins->type = STACK_R8;
8960                         } else {
8961                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8962                                 ins->type = STACK_R8;
8963                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8964                                 ins->inst_p0 = d;
8965                                 MONO_ADD_INS (cfg->cbb, ins);
8966                         }
8967                         ++ip;
8968                         readr8 (ip, d);
8969                         ip += 8;
8970                         *sp++ = ins;
8971                         break;
8972                 }
8973                 case CEE_DUP: {
8974                         MonoInst *temp, *store;
8975                         CHECK_STACK (1);
8976                         CHECK_STACK_OVF (1);
8977                         sp--;
8978                         ins = *sp;
8979
8980                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8981                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8982
8983                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8984                         *sp++ = ins;
8985
8986                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8987                         *sp++ = ins;
8988
8989                         ++ip;
8990                         inline_costs += 2;
8991                         break;
8992                 }
8993                 case CEE_POP:
8994                         CHECK_STACK (1);
8995                         ip++;
8996                         --sp;
8997
8998 #ifdef TARGET_X86
8999                         if (sp [0]->type == STACK_R8)
9000                                 /* we need to pop the value from the x86 FP stack */
9001                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
9002 #endif
9003                         break;
9004                 case CEE_JMP: {
9005                         MonoCallInst *call;
9006                         MonoMethodSignature *fsig;
9007                         int i, n;
9008
9009                         INLINE_FAILURE ("jmp");
9010                         GSHAREDVT_FAILURE (*ip);
9011
9012                         CHECK_OPSIZE (5);
9013                         if (stack_start != sp)
9014                                 UNVERIFIED;
9015                         token = read32 (ip + 1);
9016                         /* FIXME: check the signature matches */
9017                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9018                         CHECK_CFG_ERROR;
9019
9020                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9021                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9022
9023                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9024
9025                         fsig = mono_method_signature (cmethod);
9026                         n = fsig->param_count + fsig->hasthis;
9027                         if (cfg->llvm_only) {
9028                                 MonoInst **args;
9029
9030                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9031                                 for (i = 0; i < n; ++i)
9032                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9033                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9034                                 /*
9035                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9036                                  * have to emit a normal return since llvm expects it.
9037                                  */
9038                                 if (cfg->ret)
9039                                         emit_setret (cfg, ins);
9040                                 MONO_INST_NEW (cfg, ins, OP_BR);
9041                                 ins->inst_target_bb = end_bblock;
9042                                 MONO_ADD_INS (cfg->cbb, ins);
9043                                 link_bblock (cfg, cfg->cbb, end_bblock);
9044                                 ip += 5;
9045                                 break;
9046                         } else if (cfg->backend->have_op_tail_call) {
9047                                 /* Handle tail calls similarly to calls */
9048                                 DISABLE_AOT (cfg);
9049
9050                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9051                                 call->method = cmethod;
9052                                 call->tail_call = TRUE;
9053                                 call->signature = mono_method_signature (cmethod);
9054                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9055                                 call->inst.inst_p0 = cmethod;
9056                                 for (i = 0; i < n; ++i)
9057                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9058
9059                                 mono_arch_emit_call (cfg, call);
9060                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9061                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9062                         } else {
9063                                 for (i = 0; i < num_args; ++i)
9064                                         /* Prevent arguments from being optimized away */
9065                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9066
9067                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9068                                 ins = (MonoInst*)call;
9069                                 ins->inst_p0 = cmethod;
9070                                 MONO_ADD_INS (cfg->cbb, ins);
9071                         }
9072
9073                         ip += 5;
9074                         start_new_bblock = 1;
9075                         break;
9076                 }
9077                 case CEE_CALLI: {
9078                         MonoInst *addr;
9079                         MonoMethodSignature *fsig;
9080
9081                         CHECK_OPSIZE (5);
9082                         token = read32 (ip + 1);
9083
9084                         ins = NULL;
9085
9086                         //GSHAREDVT_FAILURE (*ip);
9087                         cmethod = NULL;
9088                         CHECK_STACK (1);
9089                         --sp;
9090                         addr = *sp;
9091                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
9092                         CHECK_CFG_ERROR;
9093
9094                         if (method->dynamic && fsig->pinvoke) {
9095                                 MonoInst *args [3];
9096
9097                                 /*
9098                                  * This is a call through a function pointer using a pinvoke
9099                                  * signature. Have to create a wrapper and call that instead.
9100                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9101                                  * instead based on the signature.
9102                                  */
9103                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9104                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9105                                 args [2] = addr;
9106                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9107                         }
9108
9109                         n = fsig->param_count + fsig->hasthis;
9110
9111                         CHECK_STACK (n);
9112
9113                         //g_assert (!virtual_ || fsig->hasthis);
9114
9115                         sp -= n;
9116
9117                         inline_costs += 10 * num_calls++;
9118
9119                         /*
9120                          * Making generic calls out of gsharedvt methods.
9121                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9122                          * patching gshared method addresses into a gsharedvt method.
9123                          */
9124                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9125                                 /*
9126                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9127                                  */
9128                                 MonoInst *callee = addr;
9129
9130                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9131                                         /* Not tested */
9132                                         GSHAREDVT_FAILURE (*ip);
9133
9134                                 if (cfg->llvm_only)
9135                                         // FIXME:
9136                                         GSHAREDVT_FAILURE (*ip);
9137
9138                                 addr = emit_get_rgctx_sig (cfg, context_used,
9139                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9140                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9141                                 goto calli_end;
9142                         }
9143
9144                         /* Prevent inlining of methods with indirect calls */
9145                         INLINE_FAILURE ("indirect call");
9146
9147                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9148                                 MonoJumpInfoType info_type;
9149                                 gpointer info_data;
9150
9151                                 /*
9152                                  * Instead of emitting an indirect call, emit a direct call
9153                                  * with the contents of the aotconst as the patch info.
9154                                  */
9155                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9156                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9157                                         info_data = addr->inst_p0;
9158                                 } else {
9159                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9160                                         info_data = addr->inst_right->inst_left;
9161                                 }
9162
9163                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9164                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9165                                         NULLIFY_INS (addr);
9166                                         goto calli_end;
9167                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9168                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9169                                         NULLIFY_INS (addr);
9170                                         goto calli_end;
9171                                 }
9172                         }
9173                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9174
9175                         calli_end:
9176
9177                         /* End of call, INS should contain the result of the call, if any */
9178
9179                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9180                                 g_assert (ins);
9181                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9182                         }
9183
9184                         CHECK_CFG_EXCEPTION;
9185
9186                         ip += 5;
9187                         ins_flag = 0;
9188                         constrained_class = NULL;
9189                         break;
9190                 }
9191                 case CEE_CALL:
9192                 case CEE_CALLVIRT: {
9193                         MonoInst *addr = NULL;
9194                         MonoMethodSignature *fsig = NULL;
9195                         int array_rank = 0;
9196                         int virtual_ = *ip == CEE_CALLVIRT;
9197                         gboolean pass_imt_from_rgctx = FALSE;
9198                         MonoInst *imt_arg = NULL;
9199                         MonoInst *keep_this_alive = NULL;
9200                         gboolean pass_vtable = FALSE;
9201                         gboolean pass_mrgctx = FALSE;
9202                         MonoInst *vtable_arg = NULL;
9203                         gboolean check_this = FALSE;
9204                         gboolean supported_tail_call = FALSE;
9205                         gboolean tail_call = FALSE;
9206                         gboolean need_seq_point = FALSE;
9207                         guint32 call_opcode = *ip;
9208                         gboolean emit_widen = TRUE;
9209                         gboolean push_res = TRUE;
9210                         gboolean skip_ret = FALSE;
9211                         gboolean delegate_invoke = FALSE;
9212                         gboolean direct_icall = FALSE;
9213                         gboolean constrained_partial_call = FALSE;
9214                         MonoMethod *cil_method;
9215
9216                         CHECK_OPSIZE (5);
9217                         token = read32 (ip + 1);
9218
9219                         ins = NULL;
9220
9221                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9222                         CHECK_CFG_ERROR;
9223
9224                         cil_method = cmethod;
9225
9226                         if (constrained_class) {
9227                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9228                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9229                                                 g_assert (!cmethod->klass->valuetype);
9230                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9231                                                         constrained_partial_call = TRUE;
9232                                         }
9233                                 }
9234
9235                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9236                                         if (cfg->verbose_level > 2)
9237                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9238                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9239                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9240                                                   cfg->gshared)) {
9241                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9242                                                 CHECK_CFG_ERROR;
9243                                         }
9244                                 } else {
9245                                         if (cfg->verbose_level > 2)
9246                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9247
9248                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9249                                                 /*
9250                                                  * This is needed since get_method_constrained can't find
9251                                                  * the method in klass representing a type var.
9252                                                  * The type var is guaranteed to be a reference type in this
9253                                                  * case.
9254                                                  */
9255                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9256                                                         g_assert (!cmethod->klass->valuetype);
9257                                         } else {
9258                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9259                                                 CHECK_CFG_ERROR;
9260                                         }
9261                                 }
9262                         }
9263
9264                         if (!dont_verify && !cfg->skip_visibility) {
9265                                 MonoMethod *target_method = cil_method;
9266                                 if (method->is_inflated) {
9267                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9268                                         CHECK_CFG_ERROR;
9269                                 }
9270                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9271                                         !mono_method_can_access_method (method, cil_method))
9272                                         METHOD_ACCESS_FAILURE (method, cil_method);
9273                         }
9274
9275                         if (mono_security_core_clr_enabled ())
9276                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9277
9278                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9279                                 /* MS.NET seems to silently convert this to a callvirt */
9280                                 virtual_ = 1;
9281
9282                         {
9283                                 /*
9284                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9285                                  * converts to a callvirt.
9286                                  *
9287                                  * tests/bug-515884.il is an example of this behavior
9288                                  */
9289                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9290                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9291                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9292                                         virtual_ = 1;
9293                         }
9294
9295                         if (!cmethod->klass->inited)
9296                                 if (!mono_class_init (cmethod->klass))
9297                                         TYPE_LOAD_ERROR (cmethod->klass);
9298
9299                         fsig = mono_method_signature (cmethod);
9300                         if (!fsig)
9301                                 LOAD_ERROR;
9302                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9303                                 mini_class_is_system_array (cmethod->klass)) {
9304                                 array_rank = cmethod->klass->rank;
9305                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9306                                 direct_icall = TRUE;
9307                         } else if (fsig->pinvoke) {
9308                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9309                                 fsig = mono_method_signature (wrapper);
9310                         } else if (constrained_class) {
9311                         } else {
9312                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9313                                 CHECK_CFG_ERROR;
9314                         }
9315
9316                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
9317                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9318
9319                         /* See code below */
9320                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9321                                 MonoBasicBlock *tbb;
9322
9323                                 GET_BBLOCK (cfg, tbb, ip + 5);
9324                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9325                                         /*
9326                                          * We want to extend the try block to cover the call, but we can't do it if the
9327                                          * call is made directly since its followed by an exception check.
9328                                          */
9329                                         direct_icall = FALSE;
9330                                 }
9331                         }
9332
9333                         mono_save_token_info (cfg, image, token, cil_method);
9334
9335                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9336                                 need_seq_point = TRUE;
9337
9338                         /* Don't support calls made using type arguments for now */
9339                         /*
9340                           if (cfg->gsharedvt) {
9341                           if (mini_is_gsharedvt_signature (fsig))
9342                           GSHAREDVT_FAILURE (*ip);
9343                           }
9344                         */
9345
9346                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9347                                 g_assert_not_reached ();
9348
9349                         n = fsig->param_count + fsig->hasthis;
9350
9351                         if (!cfg->gshared && cmethod->klass->generic_container)
9352                                 UNVERIFIED;
9353
9354                         if (!cfg->gshared)
9355                                 g_assert (!mono_method_check_context_used (cmethod));
9356
9357                         CHECK_STACK (n);
9358
9359                         //g_assert (!virtual_ || fsig->hasthis);
9360
9361                         sp -= n;
9362
9363                         /*
9364                          * We have the `constrained.' prefix opcode.
9365                          */
9366                         if (constrained_class) {
9367                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9368                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9369                                                 /* The 'Own method' case below */
9370                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9371                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9372                                         } else {
9373                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9374                                                 CHECK_CFG_EXCEPTION;
9375                                                 g_assert (ins);
9376                                                 goto call_end;
9377                                         }
9378                                 }
9379
9380                                 if (constrained_partial_call) {
9381                                         gboolean need_box = TRUE;
9382
9383                                         /*
9384                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9385                                          * called method is not known at compile time either. The called method could end up being
9386                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9387                                          * to box the receiver.
9388                                          * A simple solution would be to box always and make a normal virtual call, but that would
9389                                          * be bad performance wise.
9390                                          */
9391                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9392                                                 /*
9393                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9394                                                  */
9395                                                 need_box = FALSE;
9396                                         }
9397
9398                                         if (!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9399                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9400                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9401                                                 ins->klass = constrained_class;
9402                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9403                                                 CHECK_CFG_EXCEPTION;
9404                                         } else if (need_box) {
9405                                                 MonoInst *box_type;
9406                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9407                                                 MonoInst *nonbox_call;
9408
9409                                                 /*
9410                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9411                                                  * if needed.
9412                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9413                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9414                                                  */
9415                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9416
9417                                                 NEW_BBLOCK (cfg, is_ref_bb);
9418                                                 NEW_BBLOCK (cfg, end_bb);
9419
9420                                                 box_type = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE);
9421                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9422                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9423
9424                                                 /* Non-ref case */
9425                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9426
9427                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9428
9429                                                 /* Ref case */
9430                                                 MONO_START_BB (cfg, is_ref_bb);
9431                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9432                                                 ins->klass = constrained_class;
9433                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9434                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9435
9436                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9437
9438                                                 MONO_START_BB (cfg, end_bb);
9439                                                 cfg->cbb = end_bb;
9440
9441                                                 nonbox_call->dreg = ins->dreg;
9442                                                 goto call_end;
9443                                         } else {
9444                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9445                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9446                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9447                                                 goto call_end;
9448                                         }
9449                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9450                                         /*
9451                                          * The type parameter is instantiated as a valuetype,
9452                                          * but that type doesn't override the method we're
9453                                          * calling, so we need to box `this'.
9454                                          */
9455                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9456                                         ins->klass = constrained_class;
9457                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9458                                         CHECK_CFG_EXCEPTION;
9459                                 } else if (!constrained_class->valuetype) {
9460                                         int dreg = alloc_ireg_ref (cfg);
9461
9462                                         /*
9463                                          * The type parameter is instantiated as a reference
9464                                          * type.  We have a managed pointer on the stack, so
9465                                          * we need to dereference it here.
9466                                          */
9467                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9468                                         ins->type = STACK_OBJ;
9469                                         sp [0] = ins;
9470                                 } else {
9471                                         if (cmethod->klass->valuetype) {
9472                                                 /* Own method */
9473                                         } else {
9474                                                 /* Interface method */
9475                                                 int ioffset, slot;
9476
9477                                                 mono_class_setup_vtable (constrained_class);
9478                                                 CHECK_TYPELOAD (constrained_class);
9479                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9480                                                 if (ioffset == -1)
9481                                                         TYPE_LOAD_ERROR (constrained_class);
9482                                                 slot = mono_method_get_vtable_slot (cmethod);
9483                                                 if (slot == -1)
9484                                                         TYPE_LOAD_ERROR (cmethod->klass);
9485                                                 cmethod = constrained_class->vtable [ioffset + slot];
9486
9487                                                 if (cmethod->klass == mono_defaults.enum_class) {
9488                                                         /* Enum implements some interfaces, so treat this as the first case */
9489                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9490                                                         ins->klass = constrained_class;
9491                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9492                                                         CHECK_CFG_EXCEPTION;
9493                                                 }
9494                                         }
9495                                         virtual_ = 0;
9496                                 }
9497                                 constrained_class = NULL;
9498                         }
9499
9500                         if (check_call_signature (cfg, fsig, sp))
9501                                 UNVERIFIED;
9502
9503                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9504                                 delegate_invoke = TRUE;
9505
9506                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9507                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9508                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9509                                         emit_widen = FALSE;
9510                                 }
9511
9512                                 goto call_end;
9513                         }
9514
9515                         /*
9516                          * If the callee is a shared method, then its static cctor
9517                          * might not get called after the call was patched.
9518                          */
9519                         if (cfg->gshared && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9520                                 emit_class_init (cfg, cmethod->klass);
9521                                 CHECK_TYPELOAD (cmethod->klass);
9522                         }
9523
9524                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9525
9526                         if (cfg->gshared) {
9527                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9528
9529                                 context_used = mini_method_check_context_used (cfg, cmethod);
9530
9531                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9532                                         /* Generic method interface
9533                                            calls are resolved via a
9534                                            helper function and don't
9535                                            need an imt. */
9536                                         if (!cmethod_context || !cmethod_context->method_inst)
9537                                                 pass_imt_from_rgctx = TRUE;
9538                                 }
9539
9540                                 /*
9541                                  * If a shared method calls another
9542                                  * shared method then the caller must
9543                                  * have a generic sharing context
9544                                  * because the magic trampoline
9545                                  * requires it.  FIXME: We shouldn't
9546                                  * have to force the vtable/mrgctx
9547                                  * variable here.  Instead there
9548                                  * should be a flag in the cfg to
9549                                  * request a generic sharing context.
9550                                  */
9551                                 if (context_used &&
9552                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9553                                         mono_get_vtable_var (cfg);
9554                         }
9555
9556                         if (pass_vtable) {
9557                                 if (context_used) {
9558                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9559                                 } else {
9560                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9561
9562                                         CHECK_TYPELOAD (cmethod->klass);
9563                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9564                                 }
9565                         }
9566
9567                         if (pass_mrgctx) {
9568                                 g_assert (!vtable_arg);
9569
9570                                 if (!cfg->compile_aot) {
9571                                         /*
9572                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9573                                          * for type load errors before.
9574                                          */
9575                                         mono_class_setup_vtable (cmethod->klass);
9576                                         CHECK_TYPELOAD (cmethod->klass);
9577                                 }
9578
9579                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9580
9581                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9582                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9583                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9584                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9585                                         if (virtual_)
9586                                                 check_this = TRUE;
9587                                         virtual_ = 0;
9588                                 }
9589                         }
9590
9591                         if (pass_imt_from_rgctx) {
9592                                 g_assert (!pass_vtable);
9593
9594                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9595                                         cmethod, MONO_RGCTX_INFO_METHOD);
9596                         }
9597
9598                         if (check_this)
9599                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9600
9601                         /* Calling virtual generic methods */
9602                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9603                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9604                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9605                             fsig->generic_param_count &&
9606                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9607                                 !cfg->llvm_only) {
9608                                 MonoInst *this_temp, *this_arg_temp, *store;
9609                                 MonoInst *iargs [4];
9610
9611                                 g_assert (fsig->is_inflated);
9612
9613                                 /* Prevent inlining of methods that contain indirect calls */
9614                                 INLINE_FAILURE ("virtual generic call");
9615
9616                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9617                                         GSHAREDVT_FAILURE (*ip);
9618
9619                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9620                                         g_assert (!imt_arg);
9621                                         if (!context_used)
9622                                                 g_assert (cmethod->is_inflated);
9623                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9624                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9625                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9626                                 } else {
9627                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9628                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9629                                         MONO_ADD_INS (cfg->cbb, store);
9630
9631                                         /* FIXME: This should be a managed pointer */
9632                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9633
9634                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9635                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9636                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9637                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9638                                         addr = mono_emit_jit_icall (cfg,
9639                                                                                                 mono_helper_compile_generic_method, iargs);
9640
9641                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9642
9643                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9644                                 }
9645
9646                                 goto call_end;
9647                         }
9648
9649                         /*
9650                          * Implement a workaround for the inherent races involved in locking:
9651                          * Monitor.Enter ()
9652                          * try {
9653                          * } finally {
9654                          *    Monitor.Exit ()
9655                          * }
9656                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9657                          * try block, the Exit () won't be executed, see:
9658                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9659                          * To work around this, we extend such try blocks to include the last x bytes
9660                          * of the Monitor.Enter () call.
9661                          */
9662                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9663                                 MonoBasicBlock *tbb;
9664
9665                                 GET_BBLOCK (cfg, tbb, ip + 5);
9666                                 /*
9667                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9668                                  * from Monitor.Enter like ArgumentNullException.
9669                                  */
9670                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9671                                         /* Mark this bblock as needing to be extended */
9672                                         tbb->extend_try_block = TRUE;
9673                                 }
9674                         }
9675
9676                         /* Conversion to a JIT intrinsic */
9677                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9678                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9679                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9680                                         emit_widen = FALSE;
9681                                 }
9682                                 goto call_end;
9683                         }
9684                         CHECK_CFG_ERROR;
9685
9686                         /* Inlining */
9687                         if ((cfg->opt & MONO_OPT_INLINE) &&
9688                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9689                             mono_method_check_inlining (cfg, cmethod)) {
9690                                 int costs;
9691                                 gboolean always = FALSE;
9692
9693                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9694                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9695                                         /* Prevent inlining of methods that call wrappers */
9696                                         INLINE_FAILURE ("wrapper call");
9697                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9698                                         always = TRUE;
9699                                 }
9700
9701                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9702                                 if (costs) {
9703                                         cfg->real_offset += 5;
9704
9705                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9706                                                 /* *sp is already set by inline_method */
9707                                                 sp++;
9708                                                 push_res = FALSE;
9709                                         }
9710
9711                                         inline_costs += costs;
9712
9713                                         goto call_end;
9714                                 }
9715                         }
9716
9717                         /* Tail recursion elimination */
9718                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9719                                 gboolean has_vtargs = FALSE;
9720                                 int i;
9721
9722                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9723                                 INLINE_FAILURE ("tail call");
9724
9725                                 /* keep it simple */
9726                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9727                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9728                                                 has_vtargs = TRUE;
9729                                 }
9730
9731                                 if (!has_vtargs) {
9732                                         for (i = 0; i < n; ++i)
9733                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9734                                         MONO_INST_NEW (cfg, ins, OP_BR);
9735                                         MONO_ADD_INS (cfg->cbb, ins);
9736                                         tblock = start_bblock->out_bb [0];
9737                                         link_bblock (cfg, cfg->cbb, tblock);
9738                                         ins->inst_target_bb = tblock;
9739                                         start_new_bblock = 1;
9740
9741                                         /* skip the CEE_RET, too */
9742                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9743                                                 skip_ret = TRUE;
9744                                         push_res = FALSE;
9745                                         goto call_end;
9746                                 }
9747                         }
9748
9749                         inline_costs += 10 * num_calls++;
9750
9751                         /*
9752                          * Making generic calls out of gsharedvt methods.
9753                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9754                          * patching gshared method addresses into a gsharedvt method.
9755                          */
9756                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9757                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9758                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9759                                 MonoRgctxInfoType info_type;
9760
9761                                 if (virtual_) {
9762                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9763                                                 //GSHAREDVT_FAILURE (*ip);
9764                                         // disable for possible remoting calls
9765                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9766                                                 GSHAREDVT_FAILURE (*ip);
9767                                         if (fsig->generic_param_count) {
9768                                                 /* virtual generic call */
9769                                                 g_assert (!imt_arg);
9770                                                 /* Same as the virtual generic case above */
9771                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9772                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9773                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9774                                                 vtable_arg = NULL;
9775                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9776                                                 /* This can happen when we call a fully instantiated iface method */
9777                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9778                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9779                                                 vtable_arg = NULL;
9780                                         }
9781                                 }
9782
9783                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9784                                         keep_this_alive = sp [0];
9785
9786                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9787                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9788                                 else
9789                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9790                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9791
9792                                 if (cfg->llvm_only) {
9793                                         // FIXME: Avoid initializing vtable_arg
9794                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9795                                 } else {
9796                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9797                                 }
9798                                 goto call_end;
9799                         }
9800
9801                         /* Generic sharing */
9802
9803                         /*
9804                          * Use this if the callee is gsharedvt sharable too, since
9805                          * at runtime we might find an instantiation so the call cannot
9806                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9807                          */
9808                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9809                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9810                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9811                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9812                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9813                                 INLINE_FAILURE ("gshared");
9814
9815                                 g_assert (cfg->gshared && cmethod);
9816                                 g_assert (!addr);
9817
9818                                 /*
9819                                  * We are compiling a call to a
9820                                  * generic method from shared code,
9821                                  * which means that we have to look up
9822                                  * the method in the rgctx and do an
9823                                  * indirect call.
9824                                  */
9825                                 if (fsig->hasthis)
9826                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9827
9828                                 if (cfg->llvm_only) {
9829                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9830                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9831                                         else
9832                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9833                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9834                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9835                                 } else {
9836                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9837                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9838                                 }
9839                                 goto call_end;
9840                         }
9841
9842                         /* Direct calls to icalls */
9843                         if (direct_icall) {
9844                                 MonoMethod *wrapper;
9845                                 int costs;
9846
9847                                 /* Inline the wrapper */
9848                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9849
9850                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9851                                 g_assert (costs > 0);
9852                                 cfg->real_offset += 5;
9853
9854                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9855                                         /* *sp is already set by inline_method */
9856                                         sp++;
9857                                         push_res = FALSE;
9858                                 }
9859
9860                                 inline_costs += costs;
9861
9862                                 goto call_end;
9863                         }
9864
9865                         /* Array methods */
9866                         if (array_rank) {
9867                                 MonoInst *addr;
9868
9869                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9870                                         MonoInst *val = sp [fsig->param_count];
9871
9872                                         if (val->type == STACK_OBJ) {
9873                                                 MonoInst *iargs [2];
9874
9875                                                 iargs [0] = sp [0];
9876                                                 iargs [1] = val;
9877
9878                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9879                                         }
9880
9881                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9882                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9883                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9884                                                 emit_write_barrier (cfg, addr, val);
9885                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9886                                                 GSHAREDVT_FAILURE (*ip);
9887                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9888                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9889
9890                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9891                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9892                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9893                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9894                                         CHECK_TYPELOAD (cmethod->klass);
9895
9896                                         readonly = FALSE;
9897                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9898                                         ins = addr;
9899                                 } else {
9900                                         g_assert_not_reached ();
9901                                 }
9902
9903                                 emit_widen = FALSE;
9904                                 goto call_end;
9905                         }
9906
9907                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9908                         if (ins)
9909                                 goto call_end;
9910
9911                         /* Tail prefix / tail call optimization */
9912
9913                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9914                         /* FIXME: runtime generic context pointer for jumps? */
9915                         /* FIXME: handle this for generic sharing eventually */
9916                         if ((ins_flag & MONO_INST_TAILCALL) &&
9917                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9918                                 supported_tail_call = TRUE;
9919
9920                         if (supported_tail_call) {
9921                                 MonoCallInst *call;
9922
9923                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9924                                 INLINE_FAILURE ("tail call");
9925
9926                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9927
9928                                 if (cfg->backend->have_op_tail_call) {
9929                                         /* Handle tail calls similarly to normal calls */
9930                                         tail_call = TRUE;
9931                                 } else {
9932                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9933
9934                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9935                                         call->tail_call = TRUE;
9936                                         call->method = cmethod;
9937                                         call->signature = mono_method_signature (cmethod);
9938
9939                                         /*
9940                                          * We implement tail calls by storing the actual arguments into the
9941                                          * argument variables, then emitting a CEE_JMP.
9942                                          */
9943                                         for (i = 0; i < n; ++i) {
9944                                                 /* Prevent argument from being register allocated */
9945                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9946                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9947                                         }
9948                                         ins = (MonoInst*)call;
9949                                         ins->inst_p0 = cmethod;
9950                                         ins->inst_p1 = arg_array [0];
9951                                         MONO_ADD_INS (cfg->cbb, ins);
9952                                         link_bblock (cfg, cfg->cbb, end_bblock);
9953                                         start_new_bblock = 1;
9954
9955                                         // FIXME: Eliminate unreachable epilogs
9956
9957                                         /*
9958                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9959                                          * only reachable from this call.
9960                                          */
9961                                         GET_BBLOCK (cfg, tblock, ip + 5);
9962                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9963                                                 skip_ret = TRUE;
9964                                         push_res = FALSE;
9965
9966                                         goto call_end;
9967                                 }
9968                         }
9969
9970                         /*
9971                          * Synchronized wrappers.
9972                          * Its hard to determine where to replace a method with its synchronized
9973                          * wrapper without causing an infinite recursion. The current solution is
9974                          * to add the synchronized wrapper in the trampolines, and to
9975                          * change the called method to a dummy wrapper, and resolve that wrapper
9976                          * to the real method in mono_jit_compile_method ().
9977                          */
9978                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9979                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9980                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9981                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9982                         }
9983
9984                         /*
9985                          * Virtual calls in llvm-only mode.
9986                          */
9987                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9988                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9989                                 goto call_end;
9990                         }
9991
9992                         /* Common call */
9993                         INLINE_FAILURE ("call");
9994                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9995                                                                                           imt_arg, vtable_arg);
9996
9997                         if (tail_call && !cfg->llvm_only) {
9998                                 link_bblock (cfg, cfg->cbb, end_bblock);
9999                                 start_new_bblock = 1;
10000
10001                                 // FIXME: Eliminate unreachable epilogs
10002
10003                                 /*
10004                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10005                                  * only reachable from this call.
10006                                  */
10007                                 GET_BBLOCK (cfg, tblock, ip + 5);
10008                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10009                                         skip_ret = TRUE;
10010                                 push_res = FALSE;
10011                         }
10012
10013                         call_end:
10014
10015                         /* End of call, INS should contain the result of the call, if any */
10016
10017                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10018                                 g_assert (ins);
10019                                 if (emit_widen)
10020                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10021                                 else
10022                                         *sp++ = ins;
10023                         }
10024
10025                         if (keep_this_alive) {
10026                                 MonoInst *dummy_use;
10027
10028                                 /* See mono_emit_method_call_full () */
10029                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10030                         }
10031
10032                         CHECK_CFG_EXCEPTION;
10033
10034                         ip += 5;
10035                         if (skip_ret) {
10036                                 g_assert (*ip == CEE_RET);
10037                                 ip += 1;
10038                         }
10039                         ins_flag = 0;
10040                         constrained_class = NULL;
10041                         if (need_seq_point)
10042                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10043                         break;
10044                 }
10045                 case CEE_RET:
10046                         if (cfg->method != method) {
10047                                 /* return from inlined method */
10048                                 /*
10049                                  * If in_count == 0, that means the ret is unreachable due to
10050                                  * being preceeded by a throw. In that case, inline_method () will
10051                                  * handle setting the return value
10052                                  * (test case: test_0_inline_throw ()).
10053                                  */
10054                                 if (return_var && cfg->cbb->in_count) {
10055                                         MonoType *ret_type = mono_method_signature (method)->ret;
10056
10057                                         MonoInst *store;
10058                                         CHECK_STACK (1);
10059                                         --sp;
10060
10061                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10062                                                 UNVERIFIED;
10063
10064                                         //g_assert (returnvar != -1);
10065                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10066                                         cfg->ret_var_set = TRUE;
10067                                 }
10068                         } else {
10069                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10070
10071                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10072                                         emit_pop_lmf (cfg);
10073
10074                                 if (cfg->ret) {
10075                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10076
10077                                         if (seq_points && !sym_seq_points) {
10078                                                 /*
10079                                                  * Place a seq point here too even through the IL stack is not
10080                                                  * empty, so a step over on
10081                                                  * call <FOO>
10082                                                  * ret
10083                                                  * will work correctly.
10084                                                  */
10085                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10086                                                 MONO_ADD_INS (cfg->cbb, ins);
10087                                         }
10088
10089                                         g_assert (!return_var);
10090                                         CHECK_STACK (1);
10091                                         --sp;
10092
10093                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10094                                                 UNVERIFIED;
10095
10096                                         emit_setret (cfg, *sp);
10097                                 }
10098                         }
10099                         if (sp != stack_start)
10100                                 UNVERIFIED;
10101                         MONO_INST_NEW (cfg, ins, OP_BR);
10102                         ip++;
10103                         ins->inst_target_bb = end_bblock;
10104                         MONO_ADD_INS (cfg->cbb, ins);
10105                         link_bblock (cfg, cfg->cbb, end_bblock);
10106                         start_new_bblock = 1;
10107                         break;
10108                 case CEE_BR_S:
10109                         CHECK_OPSIZE (2);
10110                         MONO_INST_NEW (cfg, ins, OP_BR);
10111                         ip++;
10112                         target = ip + 1 + (signed char)(*ip);
10113                         ++ip;
10114                         GET_BBLOCK (cfg, tblock, target);
10115                         link_bblock (cfg, cfg->cbb, tblock);
10116                         ins->inst_target_bb = tblock;
10117                         if (sp != stack_start) {
10118                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10119                                 sp = stack_start;
10120                                 CHECK_UNVERIFIABLE (cfg);
10121                         }
10122                         MONO_ADD_INS (cfg->cbb, ins);
10123                         start_new_bblock = 1;
10124                         inline_costs += BRANCH_COST;
10125                         break;
10126                 case CEE_BEQ_S:
10127                 case CEE_BGE_S:
10128                 case CEE_BGT_S:
10129                 case CEE_BLE_S:
10130                 case CEE_BLT_S:
10131                 case CEE_BNE_UN_S:
10132                 case CEE_BGE_UN_S:
10133                 case CEE_BGT_UN_S:
10134                 case CEE_BLE_UN_S:
10135                 case CEE_BLT_UN_S:
10136                         CHECK_OPSIZE (2);
10137                         CHECK_STACK (2);
10138                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10139                         ip++;
10140                         target = ip + 1 + *(signed char*)ip;
10141                         ip++;
10142
10143                         ADD_BINCOND (NULL);
10144
10145                         sp = stack_start;
10146                         inline_costs += BRANCH_COST;
10147                         break;
10148                 case CEE_BR:
10149                         CHECK_OPSIZE (5);
10150                         MONO_INST_NEW (cfg, ins, OP_BR);
10151                         ip++;
10152
10153                         target = ip + 4 + (gint32)read32(ip);
10154                         ip += 4;
10155                         GET_BBLOCK (cfg, tblock, target);
10156                         link_bblock (cfg, cfg->cbb, tblock);
10157                         ins->inst_target_bb = tblock;
10158                         if (sp != stack_start) {
10159                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10160                                 sp = stack_start;
10161                                 CHECK_UNVERIFIABLE (cfg);
10162                         }
10163
10164                         MONO_ADD_INS (cfg->cbb, ins);
10165
10166                         start_new_bblock = 1;
10167                         inline_costs += BRANCH_COST;
10168                         break;
10169                 case CEE_BRFALSE_S:
10170                 case CEE_BRTRUE_S:
10171                 case CEE_BRFALSE:
10172                 case CEE_BRTRUE: {
10173                         MonoInst *cmp;
10174                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10175                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10176                         guint32 opsize = is_short ? 1 : 4;
10177
10178                         CHECK_OPSIZE (opsize);
10179                         CHECK_STACK (1);
10180                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10181                                 UNVERIFIED;
10182                         ip ++;
10183                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10184                         ip += opsize;
10185
10186                         sp--;
10187
10188                         GET_BBLOCK (cfg, tblock, target);
10189                         link_bblock (cfg, cfg->cbb, tblock);
10190                         GET_BBLOCK (cfg, tblock, ip);
10191                         link_bblock (cfg, cfg->cbb, tblock);
10192
10193                         if (sp != stack_start) {
10194                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10195                                 CHECK_UNVERIFIABLE (cfg);
10196                         }
10197
10198                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10199                         cmp->sreg1 = sp [0]->dreg;
10200                         type_from_op (cfg, cmp, sp [0], NULL);
10201                         CHECK_TYPE (cmp);
10202
10203 #if SIZEOF_REGISTER == 4
10204                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10205                                 /* Convert it to OP_LCOMPARE */
10206                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10207                                 ins->type = STACK_I8;
10208                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10209                                 ins->inst_l = 0;
10210                                 MONO_ADD_INS (cfg->cbb, ins);
10211                                 cmp->opcode = OP_LCOMPARE;
10212                                 cmp->sreg2 = ins->dreg;
10213                         }
10214 #endif
10215                         MONO_ADD_INS (cfg->cbb, cmp);
10216
10217                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10218                         type_from_op (cfg, ins, sp [0], NULL);
10219                         MONO_ADD_INS (cfg->cbb, ins);
10220                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10221                         GET_BBLOCK (cfg, tblock, target);
10222                         ins->inst_true_bb = tblock;
10223                         GET_BBLOCK (cfg, tblock, ip);
10224                         ins->inst_false_bb = tblock;
10225                         start_new_bblock = 2;
10226
10227                         sp = stack_start;
10228                         inline_costs += BRANCH_COST;
10229                         break;
10230                 }
10231                 case CEE_BEQ:
10232                 case CEE_BGE:
10233                 case CEE_BGT:
10234                 case CEE_BLE:
10235                 case CEE_BLT:
10236                 case CEE_BNE_UN:
10237                 case CEE_BGE_UN:
10238                 case CEE_BGT_UN:
10239                 case CEE_BLE_UN:
10240                 case CEE_BLT_UN:
10241                         CHECK_OPSIZE (5);
10242                         CHECK_STACK (2);
10243                         MONO_INST_NEW (cfg, ins, *ip);
10244                         ip++;
10245                         target = ip + 4 + (gint32)read32(ip);
10246                         ip += 4;
10247
10248                         ADD_BINCOND (NULL);
10249
10250                         sp = stack_start;
10251                         inline_costs += BRANCH_COST;
10252                         break;
10253                 case CEE_SWITCH: {
10254                         MonoInst *src1;
10255                         MonoBasicBlock **targets;
10256                         MonoBasicBlock *default_bblock;
10257                         MonoJumpInfoBBTable *table;
10258                         int offset_reg = alloc_preg (cfg);
10259                         int target_reg = alloc_preg (cfg);
10260                         int table_reg = alloc_preg (cfg);
10261                         int sum_reg = alloc_preg (cfg);
10262                         gboolean use_op_switch;
10263
10264                         CHECK_OPSIZE (5);
10265                         CHECK_STACK (1);
10266                         n = read32 (ip + 1);
10267                         --sp;
10268                         src1 = sp [0];
10269                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10270                                 UNVERIFIED;
10271
10272                         ip += 5;
10273                         CHECK_OPSIZE (n * sizeof (guint32));
10274                         target = ip + n * sizeof (guint32);
10275
10276                         GET_BBLOCK (cfg, default_bblock, target);
10277                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10278
10279                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10280                         for (i = 0; i < n; ++i) {
10281                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10282                                 targets [i] = tblock;
10283                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10284                                 ip += 4;
10285                         }
10286
10287                         if (sp != stack_start) {
10288                                 /*
10289                                  * Link the current bb with the targets as well, so handle_stack_args
10290                                  * will set their in_stack correctly.
10291                                  */
10292                                 link_bblock (cfg, cfg->cbb, default_bblock);
10293                                 for (i = 0; i < n; ++i)
10294                                         link_bblock (cfg, cfg->cbb, targets [i]);
10295
10296                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10297                                 sp = stack_start;
10298                                 CHECK_UNVERIFIABLE (cfg);
10299
10300                                 /* Undo the links */
10301                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10302                                 for (i = 0; i < n; ++i)
10303                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10304                         }
10305
10306                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10307                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10308
10309                         for (i = 0; i < n; ++i)
10310                                 link_bblock (cfg, cfg->cbb, targets [i]);
10311
10312                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10313                         table->table = targets;
10314                         table->table_size = n;
10315
10316                         use_op_switch = FALSE;
10317 #ifdef TARGET_ARM
10318                         /* ARM implements SWITCH statements differently */
10319                         /* FIXME: Make it use the generic implementation */
10320                         if (!cfg->compile_aot)
10321                                 use_op_switch = TRUE;
10322 #endif
10323
10324                         if (COMPILE_LLVM (cfg))
10325                                 use_op_switch = TRUE;
10326
10327                         cfg->cbb->has_jump_table = 1;
10328
10329                         if (use_op_switch) {
10330                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10331                                 ins->sreg1 = src1->dreg;
10332                                 ins->inst_p0 = table;
10333                                 ins->inst_many_bb = targets;
10334                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10335                                 MONO_ADD_INS (cfg->cbb, ins);
10336                         } else {
10337                                 if (sizeof (gpointer) == 8)
10338                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10339                                 else
10340                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10341
10342 #if SIZEOF_REGISTER == 8
10343                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10344                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10345 #endif
10346
10347                                 if (cfg->compile_aot) {
10348                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10349                                 } else {
10350                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10351                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10352                                         ins->inst_p0 = table;
10353                                         ins->dreg = table_reg;
10354                                         MONO_ADD_INS (cfg->cbb, ins);
10355                                 }
10356
10357                                 /* FIXME: Use load_memindex */
10358                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10359                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10360                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10361                         }
10362                         start_new_bblock = 1;
10363                         inline_costs += (BRANCH_COST * 2);
10364                         break;
10365                 }
10366                 case CEE_LDIND_I1:
10367                 case CEE_LDIND_U1:
10368                 case CEE_LDIND_I2:
10369                 case CEE_LDIND_U2:
10370                 case CEE_LDIND_I4:
10371                 case CEE_LDIND_U4:
10372                 case CEE_LDIND_I8:
10373                 case CEE_LDIND_I:
10374                 case CEE_LDIND_R4:
10375                 case CEE_LDIND_R8:
10376                 case CEE_LDIND_REF:
10377                         CHECK_STACK (1);
10378                         --sp;
10379
10380                         switch (*ip) {
10381                         case CEE_LDIND_R4:
10382                         case CEE_LDIND_R8:
10383                                 dreg = alloc_freg (cfg);
10384                                 break;
10385                         case CEE_LDIND_I8:
10386                                 dreg = alloc_lreg (cfg);
10387                                 break;
10388                         case CEE_LDIND_REF:
10389                                 dreg = alloc_ireg_ref (cfg);
10390                                 break;
10391                         default:
10392                                 dreg = alloc_preg (cfg);
10393                         }
10394
10395                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10396                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10397                         if (*ip == CEE_LDIND_R4)
10398                                 ins->type = cfg->r4_stack_type;
10399                         ins->flags |= ins_flag;
10400                         MONO_ADD_INS (cfg->cbb, ins);
10401                         *sp++ = ins;
10402                         if (ins_flag & MONO_INST_VOLATILE) {
10403                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10404                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10405                         }
10406                         ins_flag = 0;
10407                         ++ip;
10408                         break;
10409                 case CEE_STIND_REF:
10410                 case CEE_STIND_I1:
10411                 case CEE_STIND_I2:
10412                 case CEE_STIND_I4:
10413                 case CEE_STIND_I8:
10414                 case CEE_STIND_R4:
10415                 case CEE_STIND_R8:
10416                 case CEE_STIND_I:
10417                         CHECK_STACK (2);
10418                         sp -= 2;
10419
10420                         if (ins_flag & MONO_INST_VOLATILE) {
10421                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10422                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10423                         }
10424
10425                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10426                         ins->flags |= ins_flag;
10427                         ins_flag = 0;
10428
10429                         MONO_ADD_INS (cfg->cbb, ins);
10430
10431                         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)))
10432                                 emit_write_barrier (cfg, sp [0], sp [1]);
10433
10434                         inline_costs += 1;
10435                         ++ip;
10436                         break;
10437
10438                 case CEE_MUL:
10439                         CHECK_STACK (2);
10440
10441                         MONO_INST_NEW (cfg, ins, (*ip));
10442                         sp -= 2;
10443                         ins->sreg1 = sp [0]->dreg;
10444                         ins->sreg2 = sp [1]->dreg;
10445                         type_from_op (cfg, ins, sp [0], sp [1]);
10446                         CHECK_TYPE (ins);
10447                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10448
10449                         /* Use the immediate opcodes if possible */
10450                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10451                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10452                                 if (imm_opcode != -1) {
10453                                         ins->opcode = imm_opcode;
10454                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10455                                         ins->sreg2 = -1;
10456
10457                                         NULLIFY_INS (sp [1]);
10458                                 }
10459                         }
10460
10461                         MONO_ADD_INS ((cfg)->cbb, (ins));
10462
10463                         *sp++ = mono_decompose_opcode (cfg, ins);
10464                         ip++;
10465                         break;
10466                 case CEE_ADD:
10467                 case CEE_SUB:
10468                 case CEE_DIV:
10469                 case CEE_DIV_UN:
10470                 case CEE_REM:
10471                 case CEE_REM_UN:
10472                 case CEE_AND:
10473                 case CEE_OR:
10474                 case CEE_XOR:
10475                 case CEE_SHL:
10476                 case CEE_SHR:
10477                 case CEE_SHR_UN:
10478                         CHECK_STACK (2);
10479
10480                         MONO_INST_NEW (cfg, ins, (*ip));
10481                         sp -= 2;
10482                         ins->sreg1 = sp [0]->dreg;
10483                         ins->sreg2 = sp [1]->dreg;
10484                         type_from_op (cfg, ins, sp [0], sp [1]);
10485                         CHECK_TYPE (ins);
10486                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10487                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10488
10489                         /* FIXME: Pass opcode to is_inst_imm */
10490
10491                         /* Use the immediate opcodes if possible */
10492                         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)) {
10493                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10494                                 if (imm_opcode != -1) {
10495                                         ins->opcode = imm_opcode;
10496                                         if (sp [1]->opcode == OP_I8CONST) {
10497 #if SIZEOF_REGISTER == 8
10498                                                 ins->inst_imm = sp [1]->inst_l;
10499 #else
10500                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10501                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10502 #endif
10503                                         }
10504                                         else
10505                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10506                                         ins->sreg2 = -1;
10507
10508                                         /* Might be followed by an instruction added by add_widen_op */
10509                                         if (sp [1]->next == NULL)
10510                                                 NULLIFY_INS (sp [1]);
10511                                 }
10512                         }
10513                         MONO_ADD_INS ((cfg)->cbb, (ins));
10514
10515                         *sp++ = mono_decompose_opcode (cfg, ins);
10516                         ip++;
10517                         break;
10518                 case CEE_NEG:
10519                 case CEE_NOT:
10520                 case CEE_CONV_I1:
10521                 case CEE_CONV_I2:
10522                 case CEE_CONV_I4:
10523                 case CEE_CONV_R4:
10524                 case CEE_CONV_R8:
10525                 case CEE_CONV_U4:
10526                 case CEE_CONV_I8:
10527                 case CEE_CONV_U8:
10528                 case CEE_CONV_OVF_I8:
10529                 case CEE_CONV_OVF_U8:
10530                 case CEE_CONV_R_UN:
10531                         CHECK_STACK (1);
10532
10533                         /* Special case this earlier so we have long constants in the IR */
10534                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10535                                 int data = sp [-1]->inst_c0;
10536                                 sp [-1]->opcode = OP_I8CONST;
10537                                 sp [-1]->type = STACK_I8;
10538 #if SIZEOF_REGISTER == 8
10539                                 if ((*ip) == CEE_CONV_U8)
10540                                         sp [-1]->inst_c0 = (guint32)data;
10541                                 else
10542                                         sp [-1]->inst_c0 = data;
10543 #else
10544                                 sp [-1]->inst_ls_word = data;
10545                                 if ((*ip) == CEE_CONV_U8)
10546                                         sp [-1]->inst_ms_word = 0;
10547                                 else
10548                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10549 #endif
10550                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10551                         }
10552                         else {
10553                                 ADD_UNOP (*ip);
10554                         }
10555                         ip++;
10556                         break;
10557                 case CEE_CONV_OVF_I4:
10558                 case CEE_CONV_OVF_I1:
10559                 case CEE_CONV_OVF_I2:
10560                 case CEE_CONV_OVF_I:
10561                 case CEE_CONV_OVF_U:
10562                         CHECK_STACK (1);
10563
10564                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10565                                 ADD_UNOP (CEE_CONV_OVF_I8);
10566                                 ADD_UNOP (*ip);
10567                         } else {
10568                                 ADD_UNOP (*ip);
10569                         }
10570                         ip++;
10571                         break;
10572                 case CEE_CONV_OVF_U1:
10573                 case CEE_CONV_OVF_U2:
10574                 case CEE_CONV_OVF_U4:
10575                         CHECK_STACK (1);
10576
10577                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10578                                 ADD_UNOP (CEE_CONV_OVF_U8);
10579                                 ADD_UNOP (*ip);
10580                         } else {
10581                                 ADD_UNOP (*ip);
10582                         }
10583                         ip++;
10584                         break;
10585                 case CEE_CONV_OVF_I1_UN:
10586                 case CEE_CONV_OVF_I2_UN:
10587                 case CEE_CONV_OVF_I4_UN:
10588                 case CEE_CONV_OVF_I8_UN:
10589                 case CEE_CONV_OVF_U1_UN:
10590                 case CEE_CONV_OVF_U2_UN:
10591                 case CEE_CONV_OVF_U4_UN:
10592                 case CEE_CONV_OVF_U8_UN:
10593                 case CEE_CONV_OVF_I_UN:
10594                 case CEE_CONV_OVF_U_UN:
10595                 case CEE_CONV_U2:
10596                 case CEE_CONV_U1:
10597                 case CEE_CONV_I:
10598                 case CEE_CONV_U:
10599                         CHECK_STACK (1);
10600                         ADD_UNOP (*ip);
10601                         CHECK_CFG_EXCEPTION;
10602                         ip++;
10603                         break;
10604                 case CEE_ADD_OVF:
10605                 case CEE_ADD_OVF_UN:
10606                 case CEE_MUL_OVF:
10607                 case CEE_MUL_OVF_UN:
10608                 case CEE_SUB_OVF:
10609                 case CEE_SUB_OVF_UN:
10610                         CHECK_STACK (2);
10611                         ADD_BINOP (*ip);
10612                         ip++;
10613                         break;
10614                 case CEE_CPOBJ:
10615                         GSHAREDVT_FAILURE (*ip);
10616                         CHECK_OPSIZE (5);
10617                         CHECK_STACK (2);
10618                         token = read32 (ip + 1);
10619                         klass = mini_get_class (method, token, generic_context);
10620                         CHECK_TYPELOAD (klass);
10621                         sp -= 2;
10622                         if (generic_class_is_reference_type (cfg, klass)) {
10623                                 MonoInst *store, *load;
10624                                 int dreg = alloc_ireg_ref (cfg);
10625
10626                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10627                                 load->flags |= ins_flag;
10628                                 MONO_ADD_INS (cfg->cbb, load);
10629
10630                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10631                                 store->flags |= ins_flag;
10632                                 MONO_ADD_INS (cfg->cbb, store);
10633
10634                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10635                                         emit_write_barrier (cfg, sp [0], sp [1]);
10636                         } else {
10637                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10638                         }
10639                         ins_flag = 0;
10640                         ip += 5;
10641                         break;
10642                 case CEE_LDOBJ: {
10643                         int loc_index = -1;
10644                         int stloc_len = 0;
10645
10646                         CHECK_OPSIZE (5);
10647                         CHECK_STACK (1);
10648                         --sp;
10649                         token = read32 (ip + 1);
10650                         klass = mini_get_class (method, token, generic_context);
10651                         CHECK_TYPELOAD (klass);
10652
10653                         /* Optimize the common ldobj+stloc combination */
10654                         switch (ip [5]) {
10655                         case CEE_STLOC_S:
10656                                 loc_index = ip [6];
10657                                 stloc_len = 2;
10658                                 break;
10659                         case CEE_STLOC_0:
10660                         case CEE_STLOC_1:
10661                         case CEE_STLOC_2:
10662                         case CEE_STLOC_3:
10663                                 loc_index = ip [5] - CEE_STLOC_0;
10664                                 stloc_len = 1;
10665                                 break;
10666                         default:
10667                                 break;
10668                         }
10669
10670                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10671                                 CHECK_LOCAL (loc_index);
10672
10673                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10674                                 ins->dreg = cfg->locals [loc_index]->dreg;
10675                                 ins->flags |= ins_flag;
10676                                 ip += 5;
10677                                 ip += stloc_len;
10678                                 if (ins_flag & MONO_INST_VOLATILE) {
10679                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10680                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10681                                 }
10682                                 ins_flag = 0;
10683                                 break;
10684                         }
10685
10686                         /* Optimize the ldobj+stobj combination */
10687                         /* The reference case ends up being a load+store anyway */
10688                         /* Skip this if the operation is volatile. */
10689                         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)) {
10690                                 CHECK_STACK (1);
10691
10692                                 sp --;
10693
10694                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10695
10696                                 ip += 5 + 5;
10697                                 ins_flag = 0;
10698                                 break;
10699                         }
10700
10701                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10702                         ins->flags |= ins_flag;
10703                         *sp++ = ins;
10704
10705                         if (ins_flag & MONO_INST_VOLATILE) {
10706                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10707                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10708                         }
10709
10710                         ip += 5;
10711                         ins_flag = 0;
10712                         inline_costs += 1;
10713                         break;
10714                 }
10715                 case CEE_LDSTR:
10716                         CHECK_STACK_OVF (1);
10717                         CHECK_OPSIZE (5);
10718                         n = read32 (ip + 1);
10719
10720                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10721                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10722                                 ins->type = STACK_OBJ;
10723                                 *sp = ins;
10724                         }
10725                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10726                                 MonoInst *iargs [1];
10727                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10728
10729                                 if (cfg->compile_aot)
10730                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10731                                 else
10732                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10733                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10734                         } else {
10735                                 if (cfg->opt & MONO_OPT_SHARED) {
10736                                         MonoInst *iargs [3];
10737
10738                                         if (cfg->compile_aot) {
10739                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10740                                         }
10741                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10742                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10743                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10744                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10745                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10746                                         CHECK_CFG_ERROR;
10747                                 } else {
10748                                         if (cfg->cbb->out_of_line) {
10749                                                 MonoInst *iargs [2];
10750
10751                                                 if (image == mono_defaults.corlib) {
10752                                                         /*
10753                                                          * Avoid relocations in AOT and save some space by using a
10754                                                          * version of helper_ldstr specialized to mscorlib.
10755                                                          */
10756                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10757                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10758                                                 } else {
10759                                                         /* Avoid creating the string object */
10760                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10761                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10762                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10763                                                 }
10764                                         }
10765                                         else
10766                                         if (cfg->compile_aot) {
10767                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10768                                                 *sp = ins;
10769                                                 MONO_ADD_INS (cfg->cbb, ins);
10770                                         }
10771                                         else {
10772                                                 NEW_PCONST (cfg, ins, NULL);
10773                                                 ins->type = STACK_OBJ;
10774                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10775                                                 CHECK_CFG_ERROR;
10776
10777                                                 if (!ins->inst_p0)
10778                                                         OUT_OF_MEMORY_FAILURE;
10779
10780                                                 *sp = ins;
10781                                                 MONO_ADD_INS (cfg->cbb, ins);
10782                                         }
10783                                 }
10784                         }
10785
10786                         sp++;
10787                         ip += 5;
10788                         break;
10789                 case CEE_NEWOBJ: {
10790                         MonoInst *iargs [2];
10791                         MonoMethodSignature *fsig;
10792                         MonoInst this_ins;
10793                         MonoInst *alloc;
10794                         MonoInst *vtable_arg = NULL;
10795
10796                         CHECK_OPSIZE (5);
10797                         token = read32 (ip + 1);
10798                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10799                         CHECK_CFG_ERROR;
10800
10801                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10802                         CHECK_CFG_ERROR;
10803
10804                         mono_save_token_info (cfg, image, token, cmethod);
10805
10806                         if (!mono_class_init (cmethod->klass))
10807                                 TYPE_LOAD_ERROR (cmethod->klass);
10808
10809                         context_used = mini_method_check_context_used (cfg, cmethod);
10810
10811                         if (mono_security_core_clr_enabled ())
10812                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10813
10814                         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)) {
10815                                 emit_class_init (cfg, cmethod->klass);
10816                                 CHECK_TYPELOAD (cmethod->klass);
10817                         }
10818
10819                         /*
10820                         if (cfg->gsharedvt) {
10821                                 if (mini_is_gsharedvt_variable_signature (sig))
10822                                         GSHAREDVT_FAILURE (*ip);
10823                         }
10824                         */
10825
10826                         n = fsig->param_count;
10827                         CHECK_STACK (n);
10828
10829                         /*
10830                          * Generate smaller code for the common newobj <exception> instruction in
10831                          * argument checking code.
10832                          */
10833                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10834                                 is_exception_class (cmethod->klass) && n <= 2 &&
10835                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10836                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10837                                 MonoInst *iargs [3];
10838
10839                                 sp -= n;
10840
10841                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10842                                 switch (n) {
10843                                 case 0:
10844                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10845                                         break;
10846                                 case 1:
10847                                         iargs [1] = sp [0];
10848                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10849                                         break;
10850                                 case 2:
10851                                         iargs [1] = sp [0];
10852                                         iargs [2] = sp [1];
10853                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10854                                         break;
10855                                 default:
10856                                         g_assert_not_reached ();
10857                                 }
10858
10859                                 ip += 5;
10860                                 inline_costs += 5;
10861                                 break;
10862                         }
10863
10864                         /* move the args to allow room for 'this' in the first position */
10865                         while (n--) {
10866                                 --sp;
10867                                 sp [1] = sp [0];
10868                         }
10869
10870                         /* check_call_signature () requires sp[0] to be set */
10871                         this_ins.type = STACK_OBJ;
10872                         sp [0] = &this_ins;
10873                         if (check_call_signature (cfg, fsig, sp))
10874                                 UNVERIFIED;
10875
10876                         iargs [0] = NULL;
10877
10878                         if (mini_class_is_system_array (cmethod->klass)) {
10879                                 *sp = emit_get_rgctx_method (cfg, context_used,
10880                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10881
10882                                 /* Avoid varargs in the common case */
10883                                 if (fsig->param_count == 1)
10884                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10885                                 else if (fsig->param_count == 2)
10886                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10887                                 else if (fsig->param_count == 3)
10888                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10889                                 else if (fsig->param_count == 4)
10890                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10891                                 else
10892                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10893                         } else if (cmethod->string_ctor) {
10894                                 g_assert (!context_used);
10895                                 g_assert (!vtable_arg);
10896                                 /* we simply pass a null pointer */
10897                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10898                                 /* now call the string ctor */
10899                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10900                         } else {
10901                                 if (cmethod->klass->valuetype) {
10902                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10903                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10904                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10905
10906                                         alloc = NULL;
10907
10908                                         /*
10909                                          * The code generated by mini_emit_virtual_call () expects
10910                                          * iargs [0] to be a boxed instance, but luckily the vcall
10911                                          * will be transformed into a normal call there.
10912                                          */
10913                                 } else if (context_used) {
10914                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10915                                         *sp = alloc;
10916                                 } else {
10917                                         MonoVTable *vtable = NULL;
10918
10919                                         if (!cfg->compile_aot)
10920                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10921                                         CHECK_TYPELOAD (cmethod->klass);
10922
10923                                         /*
10924                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10925                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10926                                          * As a workaround, we call class cctors before allocating objects.
10927                                          */
10928                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10929                                                 emit_class_init (cfg, cmethod->klass);
10930                                                 if (cfg->verbose_level > 2)
10931                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10932                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10933                                         }
10934
10935                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10936                                         *sp = alloc;
10937                                 }
10938                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10939
10940                                 if (alloc)
10941                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10942
10943                                 /* Now call the actual ctor */
10944                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10945                                 CHECK_CFG_EXCEPTION;
10946                         }
10947
10948                         if (alloc == NULL) {
10949                                 /* Valuetype */
10950                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10951                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10952                                 *sp++= ins;
10953                         } else {
10954                                 *sp++ = alloc;
10955                         }
10956
10957                         ip += 5;
10958                         inline_costs += 5;
10959                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10960                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10961                         break;
10962                 }
10963                 case CEE_CASTCLASS:
10964                         CHECK_STACK (1);
10965                         --sp;
10966                         CHECK_OPSIZE (5);
10967                         token = read32 (ip + 1);
10968                         klass = mini_get_class (method, token, generic_context);
10969                         CHECK_TYPELOAD (klass);
10970                         if (sp [0]->type != STACK_OBJ)
10971                                 UNVERIFIED;
10972
10973                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10974                         CHECK_CFG_EXCEPTION;
10975
10976                         *sp ++ = ins;
10977                         ip += 5;
10978                         break;
10979                 case CEE_ISINST: {
10980                         CHECK_STACK (1);
10981                         --sp;
10982                         CHECK_OPSIZE (5);
10983                         token = read32 (ip + 1);
10984                         klass = mini_get_class (method, token, generic_context);
10985                         CHECK_TYPELOAD (klass);
10986                         if (sp [0]->type != STACK_OBJ)
10987                                 UNVERIFIED;
10988
10989                         context_used = mini_class_check_context_used (cfg, klass);
10990
10991                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10992                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10993                                 MonoInst *args [3];
10994                                 int idx;
10995
10996                                 /* obj */
10997                                 args [0] = *sp;
10998
10999                                 /* klass */
11000                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
11001
11002                                 /* inline cache*/
11003                                 idx = get_castclass_cache_idx (cfg);
11004                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
11005
11006                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
11007                                 ip += 5;
11008                                 inline_costs += 2;
11009                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
11010                                 MonoMethod *mono_isinst;
11011                                 MonoInst *iargs [1];
11012                                 int costs;
11013
11014                                 mono_isinst = mono_marshal_get_isinst (klass);
11015                                 iargs [0] = sp [0];
11016
11017                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
11018                                                                            iargs, ip, cfg->real_offset, TRUE);
11019                                 CHECK_CFG_EXCEPTION;
11020                                 g_assert (costs > 0);
11021
11022                                 ip += 5;
11023                                 cfg->real_offset += 5;
11024
11025                                 *sp++= iargs [0];
11026
11027                                 inline_costs += costs;
11028                         }
11029                         else {
11030                                 ins = handle_isinst (cfg, klass, *sp, context_used);
11031                                 CHECK_CFG_EXCEPTION;
11032                                 *sp ++ = ins;
11033                                 ip += 5;
11034                         }
11035                         break;
11036                 }
11037                 case CEE_UNBOX_ANY: {
11038                         MonoInst *res, *addr;
11039
11040                         CHECK_STACK (1);
11041                         --sp;
11042                         CHECK_OPSIZE (5);
11043                         token = read32 (ip + 1);
11044                         klass = mini_get_class (method, token, generic_context);
11045                         CHECK_TYPELOAD (klass);
11046
11047                         mono_save_token_info (cfg, image, token, klass);
11048
11049                         context_used = mini_class_check_context_used (cfg, klass);
11050
11051                         if (mini_is_gsharedvt_klass (klass)) {
11052                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11053                                 inline_costs += 2;
11054                         } else if (generic_class_is_reference_type (cfg, klass)) {
11055                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
11056                                 CHECK_CFG_EXCEPTION;
11057                         } else if (mono_class_is_nullable (klass)) {
11058                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11059                         } else {
11060                                 addr = handle_unbox (cfg, klass, sp, context_used);
11061                                 /* LDOBJ */
11062                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11063                                 res = ins;
11064                                 inline_costs += 2;
11065                         }
11066
11067                         *sp ++ = res;
11068                         ip += 5;
11069                         break;
11070                 }
11071                 case CEE_BOX: {
11072                         MonoInst *val;
11073                         MonoClass *enum_class;
11074                         MonoMethod *has_flag;
11075
11076                         CHECK_STACK (1);
11077                         --sp;
11078                         val = *sp;
11079                         CHECK_OPSIZE (5);
11080                         token = read32 (ip + 1);
11081                         klass = mini_get_class (method, token, generic_context);
11082                         CHECK_TYPELOAD (klass);
11083
11084                         mono_save_token_info (cfg, image, token, klass);
11085
11086                         context_used = mini_class_check_context_used (cfg, klass);
11087
11088                         if (generic_class_is_reference_type (cfg, klass)) {
11089                                 *sp++ = val;
11090                                 ip += 5;
11091                                 break;
11092                         }
11093
11094                         if (klass == mono_defaults.void_class)
11095                                 UNVERIFIED;
11096                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11097                                 UNVERIFIED;
11098                         /* frequent check in generic code: box (struct), brtrue */
11099
11100                         /*
11101                          * Look for:
11102                          *
11103                          *   <push int/long ptr>
11104                          *   <push int/long>
11105                          *   box MyFlags
11106                          *   constrained. MyFlags
11107                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11108                          *
11109                          * If we find this sequence and the operand types on box and constrained
11110                          * are equal, we can emit a specialized instruction sequence instead of
11111                          * the very slow HasFlag () call.
11112                          */
11113                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11114                             /* Cheap checks first. */
11115                             ip + 5 + 6 + 5 < end &&
11116                             ip [5] == CEE_PREFIX1 &&
11117                             ip [6] == CEE_CONSTRAINED_ &&
11118                             ip [11] == CEE_CALLVIRT &&
11119                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11120                             mono_class_is_enum (klass) &&
11121                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11122                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11123                             has_flag->klass == mono_defaults.enum_class &&
11124                             !strcmp (has_flag->name, "HasFlag") &&
11125                             has_flag->signature->hasthis &&
11126                             has_flag->signature->param_count == 1) {
11127                                 CHECK_TYPELOAD (enum_class);
11128
11129                                 if (enum_class == klass) {
11130                                         MonoInst *enum_this, *enum_flag;
11131
11132                                         ip += 5 + 6 + 5;
11133                                         --sp;
11134
11135                                         enum_this = sp [0];
11136                                         enum_flag = sp [1];
11137
11138                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11139                                         break;
11140                                 }
11141                         }
11142
11143                         // FIXME: LLVM can't handle the inconsistent bb linking
11144                         if (!mono_class_is_nullable (klass) &&
11145                                 !mini_is_gsharedvt_klass (klass) &&
11146                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11147                                 (ip [5] == CEE_BRTRUE ||
11148                                  ip [5] == CEE_BRTRUE_S ||
11149                                  ip [5] == CEE_BRFALSE ||
11150                                  ip [5] == CEE_BRFALSE_S)) {
11151                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11152                                 int dreg;
11153                                 MonoBasicBlock *true_bb, *false_bb;
11154
11155                                 ip += 5;
11156
11157                                 if (cfg->verbose_level > 3) {
11158                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11159                                         printf ("<box+brtrue opt>\n");
11160                                 }
11161
11162                                 switch (*ip) {
11163                                 case CEE_BRTRUE_S:
11164                                 case CEE_BRFALSE_S:
11165                                         CHECK_OPSIZE (2);
11166                                         ip++;
11167                                         target = ip + 1 + (signed char)(*ip);
11168                                         ip++;
11169                                         break;
11170                                 case CEE_BRTRUE:
11171                                 case CEE_BRFALSE:
11172                                         CHECK_OPSIZE (5);
11173                                         ip++;
11174                                         target = ip + 4 + (gint)(read32 (ip));
11175                                         ip += 4;
11176                                         break;
11177                                 default:
11178                                         g_assert_not_reached ();
11179                                 }
11180
11181                                 /*
11182                                  * We need to link both bblocks, since it is needed for handling stack
11183                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11184                                  * Branching to only one of them would lead to inconsistencies, so
11185                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11186                                  */
11187                                 GET_BBLOCK (cfg, true_bb, target);
11188                                 GET_BBLOCK (cfg, false_bb, ip);
11189
11190                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11191                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11192
11193                                 if (sp != stack_start) {
11194                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11195                                         sp = stack_start;
11196                                         CHECK_UNVERIFIABLE (cfg);
11197                                 }
11198
11199                                 if (COMPILE_LLVM (cfg)) {
11200                                         dreg = alloc_ireg (cfg);
11201                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11202                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11203
11204                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11205                                 } else {
11206                                         /* The JIT can't eliminate the iconst+compare */
11207                                         MONO_INST_NEW (cfg, ins, OP_BR);
11208                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11209                                         MONO_ADD_INS (cfg->cbb, ins);
11210                                 }
11211
11212                                 start_new_bblock = 1;
11213                                 break;
11214                         }
11215
11216                         *sp++ = handle_box (cfg, val, klass, context_used);
11217
11218                         CHECK_CFG_EXCEPTION;
11219                         ip += 5;
11220                         inline_costs += 1;
11221                         break;
11222                 }
11223                 case CEE_UNBOX: {
11224                         CHECK_STACK (1);
11225                         --sp;
11226                         CHECK_OPSIZE (5);
11227                         token = read32 (ip + 1);
11228                         klass = mini_get_class (method, token, generic_context);
11229                         CHECK_TYPELOAD (klass);
11230
11231                         mono_save_token_info (cfg, image, token, klass);
11232
11233                         context_used = mini_class_check_context_used (cfg, klass);
11234
11235                         if (mono_class_is_nullable (klass)) {
11236                                 MonoInst *val;
11237
11238                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11239                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11240
11241                                 *sp++= ins;
11242                         } else {
11243                                 ins = handle_unbox (cfg, klass, sp, context_used);
11244                                 *sp++ = ins;
11245                         }
11246                         ip += 5;
11247                         inline_costs += 2;
11248                         break;
11249                 }
11250                 case CEE_LDFLD:
11251                 case CEE_LDFLDA:
11252                 case CEE_STFLD:
11253                 case CEE_LDSFLD:
11254                 case CEE_LDSFLDA:
11255                 case CEE_STSFLD: {
11256                         MonoClassField *field;
11257 #ifndef DISABLE_REMOTING
11258                         int costs;
11259 #endif
11260                         guint foffset;
11261                         gboolean is_instance;
11262                         int op;
11263                         gpointer addr = NULL;
11264                         gboolean is_special_static;
11265                         MonoType *ftype;
11266                         MonoInst *store_val = NULL;
11267                         MonoInst *thread_ins;
11268
11269                         op = *ip;
11270                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11271                         if (is_instance) {
11272                                 if (op == CEE_STFLD) {
11273                                         CHECK_STACK (2);
11274                                         sp -= 2;
11275                                         store_val = sp [1];
11276                                 } else {
11277                                         CHECK_STACK (1);
11278                                         --sp;
11279                                 }
11280                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11281                                         UNVERIFIED;
11282                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11283                                         UNVERIFIED;
11284                         } else {
11285                                 if (op == CEE_STSFLD) {
11286                                         CHECK_STACK (1);
11287                                         sp--;
11288                                         store_val = sp [0];
11289                                 }
11290                         }
11291
11292                         CHECK_OPSIZE (5);
11293                         token = read32 (ip + 1);
11294                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11295                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11296                                 klass = field->parent;
11297                         }
11298                         else {
11299                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11300                                 CHECK_CFG_ERROR;
11301                         }
11302                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11303                                 FIELD_ACCESS_FAILURE (method, field);
11304                         mono_class_init (klass);
11305
11306                         /* if the class is Critical then transparent code cannot access it's fields */
11307                         if (!is_instance && mono_security_core_clr_enabled ())
11308                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11309
11310                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11311                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11312                         if (mono_security_core_clr_enabled ())
11313                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11314                         */
11315
11316                         ftype = mono_field_get_type (field);
11317
11318                         /*
11319                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11320                          * the static case.
11321                          */
11322                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11323                                 switch (op) {
11324                                 case CEE_LDFLD:
11325                                         op = CEE_LDSFLD;
11326                                         break;
11327                                 case CEE_STFLD:
11328                                         op = CEE_STSFLD;
11329                                         break;
11330                                 case CEE_LDFLDA:
11331                                         op = CEE_LDSFLDA;
11332                                         break;
11333                                 default:
11334                                         g_assert_not_reached ();
11335                                 }
11336                                 is_instance = FALSE;
11337                         }
11338
11339                         context_used = mini_class_check_context_used (cfg, klass);
11340
11341                         /* INSTANCE CASE */
11342
11343                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11344                         if (op == CEE_STFLD) {
11345                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11346                                         UNVERIFIED;
11347 #ifndef DISABLE_REMOTING
11348                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11349                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11350                                         MonoInst *iargs [5];
11351
11352                                         GSHAREDVT_FAILURE (op);
11353
11354                                         iargs [0] = sp [0];
11355                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11356                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11357                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11358                                                     field->offset);
11359                                         iargs [4] = sp [1];
11360
11361                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11362                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11363                                                                                            iargs, ip, cfg->real_offset, TRUE);
11364                                                 CHECK_CFG_EXCEPTION;
11365                                                 g_assert (costs > 0);
11366
11367                                                 cfg->real_offset += 5;
11368
11369                                                 inline_costs += costs;
11370                                         } else {
11371                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11372                                         }
11373                                 } else
11374 #endif
11375                                 {
11376                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11377
11378                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11379
11380                                         if (mini_is_gsharedvt_klass (klass)) {
11381                                                 MonoInst *offset_ins;
11382
11383                                                 context_used = mini_class_check_context_used (cfg, klass);
11384
11385                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11386                                                 /* The value is offset by 1 */
11387                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11388                                                 dreg = alloc_ireg_mp (cfg);
11389                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11390                                                 wbarrier_ptr_ins = ins;
11391                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11392                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11393                                         } else {
11394                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11395                                         }
11396                                         if (sp [0]->opcode != OP_LDADDR)
11397                                                 store->flags |= MONO_INST_FAULT;
11398
11399                                         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)) {
11400                                                 if (mini_is_gsharedvt_klass (klass)) {
11401                                                         g_assert (wbarrier_ptr_ins);
11402                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11403                                                 } else {
11404                                                         /* insert call to write barrier */
11405                                                         MonoInst *ptr;
11406                                                         int dreg;
11407
11408                                                         dreg = alloc_ireg_mp (cfg);
11409                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11410                                                         emit_write_barrier (cfg, ptr, sp [1]);
11411                                                 }
11412                                         }
11413
11414                                         store->flags |= ins_flag;
11415                                 }
11416                                 ins_flag = 0;
11417                                 ip += 5;
11418                                 break;
11419                         }
11420
11421 #ifndef DISABLE_REMOTING
11422                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11423                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11424                                 MonoInst *iargs [4];
11425
11426                                 GSHAREDVT_FAILURE (op);
11427
11428                                 iargs [0] = sp [0];
11429                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11430                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11431                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11432                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11433                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11434                                                                                    iargs, ip, cfg->real_offset, TRUE);
11435                                         CHECK_CFG_EXCEPTION;
11436                                         g_assert (costs > 0);
11437
11438                                         cfg->real_offset += 5;
11439
11440                                         *sp++ = iargs [0];
11441
11442                                         inline_costs += costs;
11443                                 } else {
11444                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11445                                         *sp++ = ins;
11446                                 }
11447                         } else
11448 #endif
11449                         if (is_instance) {
11450                                 if (sp [0]->type == STACK_VTYPE) {
11451                                         MonoInst *var;
11452
11453                                         /* Have to compute the address of the variable */
11454
11455                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11456                                         if (!var)
11457                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11458                                         else
11459                                                 g_assert (var->klass == klass);
11460
11461                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11462                                         sp [0] = ins;
11463                                 }
11464
11465                                 if (op == CEE_LDFLDA) {
11466                                         if (sp [0]->type == STACK_OBJ) {
11467                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11468                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11469                                         }
11470
11471                                         dreg = alloc_ireg_mp (cfg);
11472
11473                                         if (mini_is_gsharedvt_klass (klass)) {
11474                                                 MonoInst *offset_ins;
11475
11476                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11477                                                 /* The value is offset by 1 */
11478                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11479                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11480                                         } else {
11481                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11482                                         }
11483                                         ins->klass = mono_class_from_mono_type (field->type);
11484                                         ins->type = STACK_MP;
11485                                         *sp++ = ins;
11486                                 } else {
11487                                         MonoInst *load;
11488
11489                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11490
11491                                         if (mini_is_gsharedvt_klass (klass)) {
11492                                                 MonoInst *offset_ins;
11493
11494                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11495                                                 /* The value is offset by 1 */
11496                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11497                                                 dreg = alloc_ireg_mp (cfg);
11498                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11499                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11500                                         } else {
11501                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11502                                         }
11503                                         load->flags |= ins_flag;
11504                                         if (sp [0]->opcode != OP_LDADDR)
11505                                                 load->flags |= MONO_INST_FAULT;
11506                                         *sp++ = load;
11507                                 }
11508                         }
11509
11510                         if (is_instance) {
11511                                 ins_flag = 0;
11512                                 ip += 5;
11513                                 break;
11514                         }
11515
11516                         /* STATIC CASE */
11517                         context_used = mini_class_check_context_used (cfg, klass);
11518
11519                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11520                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11521                                 CHECK_CFG_ERROR;
11522                         }
11523
11524                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11525                          * to be called here.
11526                          */
11527                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11528                                 mono_class_vtable (cfg->domain, klass);
11529                                 CHECK_TYPELOAD (klass);
11530                         }
11531                         mono_domain_lock (cfg->domain);
11532                         if (cfg->domain->special_static_fields)
11533                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11534                         mono_domain_unlock (cfg->domain);
11535
11536                         is_special_static = mono_class_field_is_special_static (field);
11537
11538                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11539                                 thread_ins = mono_get_thread_intrinsic (cfg);
11540                         else
11541                                 thread_ins = NULL;
11542
11543                         /* Generate IR to compute the field address */
11544                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11545                                 /*
11546                                  * Fast access to TLS data
11547                                  * Inline version of get_thread_static_data () in
11548                                  * threads.c.
11549                                  */
11550                                 guint32 offset;
11551                                 int idx, static_data_reg, array_reg, dreg;
11552
11553                                 GSHAREDVT_FAILURE (op);
11554
11555                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11556                                 static_data_reg = alloc_ireg (cfg);
11557                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11558
11559                                 if (cfg->compile_aot) {
11560                                         int offset_reg, offset2_reg, idx_reg;
11561
11562                                         /* For TLS variables, this will return the TLS offset */
11563                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11564                                         offset_reg = ins->dreg;
11565                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11566                                         idx_reg = alloc_ireg (cfg);
11567                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11568                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11569                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11570                                         array_reg = alloc_ireg (cfg);
11571                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11572                                         offset2_reg = alloc_ireg (cfg);
11573                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11574                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11575                                         dreg = alloc_ireg (cfg);
11576                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11577                                 } else {
11578                                         offset = (gsize)addr & 0x7fffffff;
11579                                         idx = offset & 0x3f;
11580
11581                                         array_reg = alloc_ireg (cfg);
11582                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11583                                         dreg = alloc_ireg (cfg);
11584                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11585                                 }
11586                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11587                                         (cfg->compile_aot && is_special_static) ||
11588                                         (context_used && is_special_static)) {
11589                                 MonoInst *iargs [2];
11590
11591                                 g_assert (field->parent);
11592                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11593                                 if (context_used) {
11594                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11595                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11596                                 } else {
11597                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11598                                 }
11599                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11600                         } else if (context_used) {
11601                                 MonoInst *static_data;
11602
11603                                 /*
11604                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11605                                         method->klass->name_space, method->klass->name, method->name,
11606                                         depth, field->offset);
11607                                 */
11608
11609                                 if (mono_class_needs_cctor_run (klass, method))
11610                                         emit_class_init (cfg, klass);
11611
11612                                 /*
11613                                  * The pointer we're computing here is
11614                                  *
11615                                  *   super_info.static_data + field->offset
11616                                  */
11617                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11618                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11619
11620                                 if (mini_is_gsharedvt_klass (klass)) {
11621                                         MonoInst *offset_ins;
11622
11623                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11624                                         /* The value is offset by 1 */
11625                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11626                                         dreg = alloc_ireg_mp (cfg);
11627                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11628                                 } else if (field->offset == 0) {
11629                                         ins = static_data;
11630                                 } else {
11631                                         int addr_reg = mono_alloc_preg (cfg);
11632                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11633                                 }
11634                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11635                                 MonoInst *iargs [2];
11636
11637                                 g_assert (field->parent);
11638                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11639                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11640                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11641                         } else {
11642                                 MonoVTable *vtable = NULL;
11643
11644                                 if (!cfg->compile_aot)
11645                                         vtable = mono_class_vtable (cfg->domain, klass);
11646                                 CHECK_TYPELOAD (klass);
11647
11648                                 if (!addr) {
11649                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11650                                                 if (!(g_slist_find (class_inits, klass))) {
11651                                                         emit_class_init (cfg, klass);
11652                                                         if (cfg->verbose_level > 2)
11653                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11654                                                         class_inits = g_slist_prepend (class_inits, klass);
11655                                                 }
11656                                         } else {
11657                                                 if (cfg->run_cctors) {
11658                                                         /* This makes so that inline cannot trigger */
11659                                                         /* .cctors: too many apps depend on them */
11660                                                         /* running with a specific order... */
11661                                                         g_assert (vtable);
11662                                                         if (! vtable->initialized)
11663                                                                 INLINE_FAILURE ("class init");
11664                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11665                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11666                                                                 goto exception_exit;
11667                                                         }
11668                                                 }
11669                                         }
11670                                         if (cfg->compile_aot)
11671                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11672                                         else {
11673                                                 g_assert (vtable);
11674                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11675                                                 g_assert (addr);
11676                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11677                                         }
11678                                 } else {
11679                                         MonoInst *iargs [1];
11680                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11681                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11682                                 }
11683                         }
11684
11685                         /* Generate IR to do the actual load/store operation */
11686
11687                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11688                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11689                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11690                         }
11691
11692                         if (op == CEE_LDSFLDA) {
11693                                 ins->klass = mono_class_from_mono_type (ftype);
11694                                 ins->type = STACK_PTR;
11695                                 *sp++ = ins;
11696                         } else if (op == CEE_STSFLD) {
11697                                 MonoInst *store;
11698
11699                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11700                                 store->flags |= ins_flag;
11701                         } else {
11702                                 gboolean is_const = FALSE;
11703                                 MonoVTable *vtable = NULL;
11704                                 gpointer addr = NULL;
11705
11706                                 if (!context_used) {
11707                                         vtable = mono_class_vtable (cfg->domain, klass);
11708                                         CHECK_TYPELOAD (klass);
11709                                 }
11710                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11711                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11712                                         int ro_type = ftype->type;
11713                                         if (!addr)
11714                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11715                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11716                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11717                                         }
11718
11719                                         GSHAREDVT_FAILURE (op);
11720
11721                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11722                                         is_const = TRUE;
11723                                         switch (ro_type) {
11724                                         case MONO_TYPE_BOOLEAN:
11725                                         case MONO_TYPE_U1:
11726                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11727                                                 sp++;
11728                                                 break;
11729                                         case MONO_TYPE_I1:
11730                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11731                                                 sp++;
11732                                                 break;
11733                                         case MONO_TYPE_CHAR:
11734                                         case MONO_TYPE_U2:
11735                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11736                                                 sp++;
11737                                                 break;
11738                                         case MONO_TYPE_I2:
11739                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11740                                                 sp++;
11741                                                 break;
11742                                                 break;
11743                                         case MONO_TYPE_I4:
11744                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11745                                                 sp++;
11746                                                 break;
11747                                         case MONO_TYPE_U4:
11748                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11749                                                 sp++;
11750                                                 break;
11751                                         case MONO_TYPE_I:
11752                                         case MONO_TYPE_U:
11753                                         case MONO_TYPE_PTR:
11754                                         case MONO_TYPE_FNPTR:
11755                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11756                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11757                                                 sp++;
11758                                                 break;
11759                                         case MONO_TYPE_STRING:
11760                                         case MONO_TYPE_OBJECT:
11761                                         case MONO_TYPE_CLASS:
11762                                         case MONO_TYPE_SZARRAY:
11763                                         case MONO_TYPE_ARRAY:
11764                                                 if (!mono_gc_is_moving ()) {
11765                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11766                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11767                                                         sp++;
11768                                                 } else {
11769                                                         is_const = FALSE;
11770                                                 }
11771                                                 break;
11772                                         case MONO_TYPE_I8:
11773                                         case MONO_TYPE_U8:
11774                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11775                                                 sp++;
11776                                                 break;
11777                                         case MONO_TYPE_R4:
11778                                         case MONO_TYPE_R8:
11779                                         case MONO_TYPE_VALUETYPE:
11780                                         default:
11781                                                 is_const = FALSE;
11782                                                 break;
11783                                         }
11784                                 }
11785
11786                                 if (!is_const) {
11787                                         MonoInst *load;
11788
11789                                         CHECK_STACK_OVF (1);
11790
11791                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11792                                         load->flags |= ins_flag;
11793                                         ins_flag = 0;
11794                                         *sp++ = load;
11795                                 }
11796                         }
11797
11798                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11799                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11800                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11801                         }
11802
11803                         ins_flag = 0;
11804                         ip += 5;
11805                         break;
11806                 }
11807                 case CEE_STOBJ:
11808                         CHECK_STACK (2);
11809                         sp -= 2;
11810                         CHECK_OPSIZE (5);
11811                         token = read32 (ip + 1);
11812                         klass = mini_get_class (method, token, generic_context);
11813                         CHECK_TYPELOAD (klass);
11814                         if (ins_flag & MONO_INST_VOLATILE) {
11815                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11816                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11817                         }
11818                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11819                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11820                         ins->flags |= ins_flag;
11821                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11822                                         generic_class_is_reference_type (cfg, klass)) {
11823                                 /* insert call to write barrier */
11824                                 emit_write_barrier (cfg, sp [0], sp [1]);
11825                         }
11826                         ins_flag = 0;
11827                         ip += 5;
11828                         inline_costs += 1;
11829                         break;
11830
11831                         /*
11832                          * Array opcodes
11833                          */
11834                 case CEE_NEWARR: {
11835                         MonoInst *len_ins;
11836                         const char *data_ptr;
11837                         int data_size = 0;
11838                         guint32 field_token;
11839
11840                         CHECK_STACK (1);
11841                         --sp;
11842
11843                         CHECK_OPSIZE (5);
11844                         token = read32 (ip + 1);
11845
11846                         klass = mini_get_class (method, token, generic_context);
11847                         CHECK_TYPELOAD (klass);
11848
11849                         context_used = mini_class_check_context_used (cfg, klass);
11850
11851                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11852                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11853                                 ins->sreg1 = sp [0]->dreg;
11854                                 ins->type = STACK_I4;
11855                                 ins->dreg = alloc_ireg (cfg);
11856                                 MONO_ADD_INS (cfg->cbb, ins);
11857                                 *sp = mono_decompose_opcode (cfg, ins);
11858                         }
11859
11860                         if (context_used) {
11861                                 MonoInst *args [3];
11862                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11863                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11864
11865                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11866
11867                                 /* vtable */
11868                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11869                                         array_class, MONO_RGCTX_INFO_VTABLE);
11870                                 /* array len */
11871                                 args [1] = sp [0];
11872
11873                                 if (managed_alloc)
11874                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11875                                 else
11876                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11877                         } else {
11878                                 if (cfg->opt & MONO_OPT_SHARED) {
11879                                         /* Decompose now to avoid problems with references to the domainvar */
11880                                         MonoInst *iargs [3];
11881
11882                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11883                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11884                                         iargs [2] = sp [0];
11885
11886                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11887                                 } else {
11888                                         /* Decompose later since it is needed by abcrem */
11889                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11890                                         mono_class_vtable (cfg->domain, array_type);
11891                                         CHECK_TYPELOAD (array_type);
11892
11893                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11894                                         ins->dreg = alloc_ireg_ref (cfg);
11895                                         ins->sreg1 = sp [0]->dreg;
11896                                         ins->inst_newa_class = klass;
11897                                         ins->type = STACK_OBJ;
11898                                         ins->klass = array_type;
11899                                         MONO_ADD_INS (cfg->cbb, ins);
11900                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11901                                         cfg->cbb->has_array_access = TRUE;
11902
11903                                         /* Needed so mono_emit_load_get_addr () gets called */
11904                                         mono_get_got_var (cfg);
11905                                 }
11906                         }
11907
11908                         len_ins = sp [0];
11909                         ip += 5;
11910                         *sp++ = ins;
11911                         inline_costs += 1;
11912
11913                         /*
11914                          * we inline/optimize the initialization sequence if possible.
11915                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11916                          * for small sizes open code the memcpy
11917                          * ensure the rva field is big enough
11918                          */
11919                         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))) {
11920                                 MonoMethod *memcpy_method = get_memcpy_method ();
11921                                 MonoInst *iargs [3];
11922                                 int add_reg = alloc_ireg_mp (cfg);
11923
11924                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11925                                 if (cfg->compile_aot) {
11926                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11927                                 } else {
11928                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11929                                 }
11930                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11931                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11932                                 ip += 11;
11933                         }
11934
11935                         break;
11936                 }
11937                 case CEE_LDLEN:
11938                         CHECK_STACK (1);
11939                         --sp;
11940                         if (sp [0]->type != STACK_OBJ)
11941                                 UNVERIFIED;
11942
11943                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11944                         ins->dreg = alloc_preg (cfg);
11945                         ins->sreg1 = sp [0]->dreg;
11946                         ins->type = STACK_I4;
11947                         /* This flag will be inherited by the decomposition */
11948                         ins->flags |= MONO_INST_FAULT;
11949                         MONO_ADD_INS (cfg->cbb, ins);
11950                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11951                         cfg->cbb->has_array_access = TRUE;
11952                         ip ++;
11953                         *sp++ = ins;
11954                         break;
11955                 case CEE_LDELEMA:
11956                         CHECK_STACK (2);
11957                         sp -= 2;
11958                         CHECK_OPSIZE (5);
11959                         if (sp [0]->type != STACK_OBJ)
11960                                 UNVERIFIED;
11961
11962                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11963
11964                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11965                         CHECK_TYPELOAD (klass);
11966                         /* we need to make sure that this array is exactly the type it needs
11967                          * to be for correctness. the wrappers are lax with their usage
11968                          * so we need to ignore them here
11969                          */
11970                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11971                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11972                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11973                                 CHECK_TYPELOAD (array_class);
11974                         }
11975
11976                         readonly = FALSE;
11977                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11978                         *sp++ = ins;
11979                         ip += 5;
11980                         break;
11981                 case CEE_LDELEM:
11982                 case CEE_LDELEM_I1:
11983                 case CEE_LDELEM_U1:
11984                 case CEE_LDELEM_I2:
11985                 case CEE_LDELEM_U2:
11986                 case CEE_LDELEM_I4:
11987                 case CEE_LDELEM_U4:
11988                 case CEE_LDELEM_I8:
11989                 case CEE_LDELEM_I:
11990                 case CEE_LDELEM_R4:
11991                 case CEE_LDELEM_R8:
11992                 case CEE_LDELEM_REF: {
11993                         MonoInst *addr;
11994
11995                         CHECK_STACK (2);
11996                         sp -= 2;
11997
11998                         if (*ip == CEE_LDELEM) {
11999                                 CHECK_OPSIZE (5);
12000                                 token = read32 (ip + 1);
12001                                 klass = mini_get_class (method, token, generic_context);
12002                                 CHECK_TYPELOAD (klass);
12003                                 mono_class_init (klass);
12004                         }
12005                         else
12006                                 klass = array_access_to_klass (*ip);
12007
12008                         if (sp [0]->type != STACK_OBJ)
12009                                 UNVERIFIED;
12010
12011                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12012
12013                         if (mini_is_gsharedvt_variable_klass (klass)) {
12014                                 // FIXME-VT: OP_ICONST optimization
12015                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12016                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12017                                 ins->opcode = OP_LOADV_MEMBASE;
12018                         } else if (sp [1]->opcode == OP_ICONST) {
12019                                 int array_reg = sp [0]->dreg;
12020                                 int index_reg = sp [1]->dreg;
12021                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
12022
12023                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
12024                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12025
12026                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12027                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12028                         } else {
12029                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12030                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12031                         }
12032                         *sp++ = ins;
12033                         if (*ip == CEE_LDELEM)
12034                                 ip += 5;
12035                         else
12036                                 ++ip;
12037                         break;
12038                 }
12039                 case CEE_STELEM_I:
12040                 case CEE_STELEM_I1:
12041                 case CEE_STELEM_I2:
12042                 case CEE_STELEM_I4:
12043                 case CEE_STELEM_I8:
12044                 case CEE_STELEM_R4:
12045                 case CEE_STELEM_R8:
12046                 case CEE_STELEM_REF:
12047                 case CEE_STELEM: {
12048                         CHECK_STACK (3);
12049                         sp -= 3;
12050
12051                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12052
12053                         if (*ip == CEE_STELEM) {
12054                                 CHECK_OPSIZE (5);
12055                                 token = read32 (ip + 1);
12056                                 klass = mini_get_class (method, token, generic_context);
12057                                 CHECK_TYPELOAD (klass);
12058                                 mono_class_init (klass);
12059                         }
12060                         else
12061                                 klass = array_access_to_klass (*ip);
12062
12063                         if (sp [0]->type != STACK_OBJ)
12064                                 UNVERIFIED;
12065
12066                         emit_array_store (cfg, klass, sp, TRUE);
12067
12068                         if (*ip == CEE_STELEM)
12069                                 ip += 5;
12070                         else
12071                                 ++ip;
12072                         inline_costs += 1;
12073                         break;
12074                 }
12075                 case CEE_CKFINITE: {
12076                         CHECK_STACK (1);
12077                         --sp;
12078
12079                         if (cfg->llvm_only) {
12080                                 MonoInst *iargs [1];
12081
12082                                 iargs [0] = sp [0];
12083                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12084                         } else  {
12085                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12086                                 ins->sreg1 = sp [0]->dreg;
12087                                 ins->dreg = alloc_freg (cfg);
12088                                 ins->type = STACK_R8;
12089                                 MONO_ADD_INS (cfg->cbb, ins);
12090
12091                                 *sp++ = mono_decompose_opcode (cfg, ins);
12092                         }
12093
12094                         ++ip;
12095                         break;
12096                 }
12097                 case CEE_REFANYVAL: {
12098                         MonoInst *src_var, *src;
12099
12100                         int klass_reg = alloc_preg (cfg);
12101                         int dreg = alloc_preg (cfg);
12102
12103                         GSHAREDVT_FAILURE (*ip);
12104
12105                         CHECK_STACK (1);
12106                         MONO_INST_NEW (cfg, ins, *ip);
12107                         --sp;
12108                         CHECK_OPSIZE (5);
12109                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12110                         CHECK_TYPELOAD (klass);
12111
12112                         context_used = mini_class_check_context_used (cfg, klass);
12113
12114                         // FIXME:
12115                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12116                         if (!src_var)
12117                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12118                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12119                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12120
12121                         if (context_used) {
12122                                 MonoInst *klass_ins;
12123
12124                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12125                                                 klass, MONO_RGCTX_INFO_KLASS);
12126
12127                                 // FIXME:
12128                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12129                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12130                         } else {
12131                                 mini_emit_class_check (cfg, klass_reg, klass);
12132                         }
12133                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12134                         ins->type = STACK_MP;
12135                         ins->klass = klass;
12136                         *sp++ = ins;
12137                         ip += 5;
12138                         break;
12139                 }
12140                 case CEE_MKREFANY: {
12141                         MonoInst *loc, *addr;
12142
12143                         GSHAREDVT_FAILURE (*ip);
12144
12145                         CHECK_STACK (1);
12146                         MONO_INST_NEW (cfg, ins, *ip);
12147                         --sp;
12148                         CHECK_OPSIZE (5);
12149                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12150                         CHECK_TYPELOAD (klass);
12151
12152                         context_used = mini_class_check_context_used (cfg, klass);
12153
12154                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12155                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12156
12157                         if (context_used) {
12158                                 MonoInst *const_ins;
12159                                 int type_reg = alloc_preg (cfg);
12160
12161                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12162                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12163                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12164                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12165                         } else if (cfg->compile_aot) {
12166                                 int const_reg = alloc_preg (cfg);
12167                                 int type_reg = alloc_preg (cfg);
12168
12169                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12170                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12171                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12172                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12173                         } else {
12174                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12175                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12176                         }
12177                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12178
12179                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12180                         ins->type = STACK_VTYPE;
12181                         ins->klass = mono_defaults.typed_reference_class;
12182                         *sp++ = ins;
12183                         ip += 5;
12184                         break;
12185                 }
12186                 case CEE_LDTOKEN: {
12187                         gpointer handle;
12188                         MonoClass *handle_class;
12189
12190                         CHECK_STACK_OVF (1);
12191
12192                         CHECK_OPSIZE (5);
12193                         n = read32 (ip + 1);
12194
12195                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12196                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12197                                 handle = mono_method_get_wrapper_data (method, n);
12198                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12199                                 if (handle_class == mono_defaults.typehandle_class)
12200                                         handle = &((MonoClass*)handle)->byval_arg;
12201                         }
12202                         else {
12203                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12204                                 CHECK_CFG_ERROR;
12205                         }
12206                         if (!handle)
12207                                 LOAD_ERROR;
12208                         mono_class_init (handle_class);
12209                         if (cfg->gshared) {
12210                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12211                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12212                                         /* This case handles ldtoken
12213                                            of an open type, like for
12214                                            typeof(Gen<>). */
12215                                         context_used = 0;
12216                                 } else if (handle_class == mono_defaults.typehandle_class) {
12217                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12218                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12219                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12220                                 else if (handle_class == mono_defaults.methodhandle_class)
12221                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12222                                 else
12223                                         g_assert_not_reached ();
12224                         }
12225
12226                         if ((cfg->opt & MONO_OPT_SHARED) &&
12227                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12228                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12229                                 MonoInst *addr, *vtvar, *iargs [3];
12230                                 int method_context_used;
12231
12232                                 method_context_used = mini_method_check_context_used (cfg, method);
12233
12234                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12235
12236                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12237                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12238                                 if (method_context_used) {
12239                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12240                                                 method, MONO_RGCTX_INFO_METHOD);
12241                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12242                                 } else {
12243                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12244                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12245                                 }
12246                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12247
12248                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12249
12250                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12251                         } else {
12252                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12253                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12254                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12255                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12256                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12257                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12258
12259                                         mono_class_init (tclass);
12260                                         if (context_used) {
12261                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12262                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12263                                         } else if (cfg->compile_aot) {
12264                                                 if (method->wrapper_type) {
12265                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12266                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12267                                                                 /* Special case for static synchronized wrappers */
12268                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12269                                                         } else {
12270                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12271                                                                 /* FIXME: n is not a normal token */
12272                                                                 DISABLE_AOT (cfg);
12273                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12274                                                         }
12275                                                 } else {
12276                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12277                                                 }
12278                                         } else {
12279                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12280                                                 CHECK_CFG_ERROR;
12281                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12282                                         }
12283                                         ins->type = STACK_OBJ;
12284                                         ins->klass = cmethod->klass;
12285                                         ip += 5;
12286                                 } else {
12287                                         MonoInst *addr, *vtvar;
12288
12289                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12290
12291                                         if (context_used) {
12292                                                 if (handle_class == mono_defaults.typehandle_class) {
12293                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12294                                                                         mono_class_from_mono_type ((MonoType *)handle),
12295                                                                         MONO_RGCTX_INFO_TYPE);
12296                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12297                                                         ins = emit_get_rgctx_method (cfg, context_used,
12298                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12299                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12300                                                         ins = emit_get_rgctx_field (cfg, context_used,
12301                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12302                                                 } else {
12303                                                         g_assert_not_reached ();
12304                                                 }
12305                                         } else if (cfg->compile_aot) {
12306                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12307                                         } else {
12308                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12309                                         }
12310                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12311                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12312                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12313                                 }
12314                         }
12315
12316                         *sp++ = ins;
12317                         ip += 5;
12318                         break;
12319                 }
12320                 case CEE_THROW:
12321                         CHECK_STACK (1);
12322                         MONO_INST_NEW (cfg, ins, OP_THROW);
12323                         --sp;
12324                         ins->sreg1 = sp [0]->dreg;
12325                         ip++;
12326                         cfg->cbb->out_of_line = TRUE;
12327                         MONO_ADD_INS (cfg->cbb, ins);
12328                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12329                         MONO_ADD_INS (cfg->cbb, ins);
12330                         sp = stack_start;
12331
12332                         link_bblock (cfg, cfg->cbb, end_bblock);
12333                         start_new_bblock = 1;
12334                         /* This can complicate code generation for llvm since the return value might not be defined */
12335                         if (COMPILE_LLVM (cfg))
12336                                 INLINE_FAILURE ("throw");
12337                         break;
12338                 case CEE_ENDFINALLY:
12339                         /* mono_save_seq_point_info () depends on this */
12340                         if (sp != stack_start)
12341                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12342                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12343                         MONO_ADD_INS (cfg->cbb, ins);
12344                         ip++;
12345                         start_new_bblock = 1;
12346
12347                         /*
12348                          * Control will leave the method so empty the stack, otherwise
12349                          * the next basic block will start with a nonempty stack.
12350                          */
12351                         while (sp != stack_start) {
12352                                 sp--;
12353                         }
12354                         break;
12355                 case CEE_LEAVE:
12356                 case CEE_LEAVE_S: {
12357                         GList *handlers;
12358
12359                         if (*ip == CEE_LEAVE) {
12360                                 CHECK_OPSIZE (5);
12361                                 target = ip + 5 + (gint32)read32(ip + 1);
12362                         } else {
12363                                 CHECK_OPSIZE (2);
12364                                 target = ip + 2 + (signed char)(ip [1]);
12365                         }
12366
12367                         /* empty the stack */
12368                         while (sp != stack_start) {
12369                                 sp--;
12370                         }
12371
12372                         /*
12373                          * If this leave statement is in a catch block, check for a
12374                          * pending exception, and rethrow it if necessary.
12375                          * We avoid doing this in runtime invoke wrappers, since those are called
12376                          * by native code which excepts the wrapper to catch all exceptions.
12377                          */
12378                         for (i = 0; i < header->num_clauses; ++i) {
12379                                 MonoExceptionClause *clause = &header->clauses [i];
12380
12381                                 /*
12382                                  * Use <= in the final comparison to handle clauses with multiple
12383                                  * leave statements, like in bug #78024.
12384                                  * The ordering of the exception clauses guarantees that we find the
12385                                  * innermost clause.
12386                                  */
12387                                 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) {
12388                                         MonoInst *exc_ins;
12389                                         MonoBasicBlock *dont_throw;
12390
12391                                         /*
12392                                           MonoInst *load;
12393
12394                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12395                                         */
12396
12397                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12398
12399                                         NEW_BBLOCK (cfg, dont_throw);
12400
12401                                         /*
12402                                          * Currently, we always rethrow the abort exception, despite the
12403                                          * fact that this is not correct. See thread6.cs for an example.
12404                                          * But propagating the abort exception is more important than
12405                                          * getting the sematics right.
12406                                          */
12407                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12408                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12409                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12410
12411                                         MONO_START_BB (cfg, dont_throw);
12412                                 }
12413                         }
12414
12415 #ifdef ENABLE_LLVM
12416                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12417 #endif
12418
12419                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12420                                 GList *tmp;
12421                                 MonoExceptionClause *clause;
12422
12423                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12424                                         clause = (MonoExceptionClause *)tmp->data;
12425                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12426                                         g_assert (tblock);
12427                                         link_bblock (cfg, cfg->cbb, tblock);
12428                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12429                                         ins->inst_target_bb = tblock;
12430                                         ins->inst_eh_block = clause;
12431                                         MONO_ADD_INS (cfg->cbb, ins);
12432                                         cfg->cbb->has_call_handler = 1;
12433                                         if (COMPILE_LLVM (cfg)) {
12434                                                 MonoBasicBlock *target_bb;
12435
12436                                                 /*
12437                                                  * Link the finally bblock with the target, since it will
12438                                                  * conceptually branch there.
12439                                                  */
12440                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12441                                                 GET_BBLOCK (cfg, target_bb, target);
12442                                                 link_bblock (cfg, tblock, target_bb);
12443                                         }
12444                                 }
12445                                 g_list_free (handlers);
12446                         }
12447
12448                         MONO_INST_NEW (cfg, ins, OP_BR);
12449                         MONO_ADD_INS (cfg->cbb, ins);
12450                         GET_BBLOCK (cfg, tblock, target);
12451                         link_bblock (cfg, cfg->cbb, tblock);
12452                         ins->inst_target_bb = tblock;
12453
12454                         start_new_bblock = 1;
12455
12456                         if (*ip == CEE_LEAVE)
12457                                 ip += 5;
12458                         else
12459                                 ip += 2;
12460
12461                         break;
12462                 }
12463
12464                         /*
12465                          * Mono specific opcodes
12466                          */
12467                 case MONO_CUSTOM_PREFIX: {
12468
12469                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12470
12471                         CHECK_OPSIZE (2);
12472                         switch (ip [1]) {
12473                         case CEE_MONO_ICALL: {
12474                                 gpointer func;
12475                                 MonoJitICallInfo *info;
12476
12477                                 token = read32 (ip + 2);
12478                                 func = mono_method_get_wrapper_data (method, token);
12479                                 info = mono_find_jit_icall_by_addr (func);
12480                                 if (!info)
12481                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12482                                 g_assert (info);
12483
12484                                 CHECK_STACK (info->sig->param_count);
12485                                 sp -= info->sig->param_count;
12486
12487                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12488                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12489                                         *sp++ = ins;
12490
12491                                 ip += 6;
12492                                 inline_costs += 10 * num_calls++;
12493
12494                                 break;
12495                         }
12496                         case CEE_MONO_LDPTR_CARD_TABLE:
12497                         case CEE_MONO_LDPTR_NURSERY_START:
12498                         case CEE_MONO_LDPTR_NURSERY_BITS:
12499                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12500                                 CHECK_STACK_OVF (1);
12501
12502                                 switch (ip [1]) {
12503                                         case CEE_MONO_LDPTR_CARD_TABLE:
12504                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12505                                                 break;
12506                                         case CEE_MONO_LDPTR_NURSERY_START:
12507                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12508                                                 break;
12509                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12510                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12511                                                 break;
12512                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12513                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12514                                                 break;
12515                                 }
12516
12517                                 *sp++ = ins;
12518                                 ip += 2;
12519                                 inline_costs += 10 * num_calls++;
12520                                 break;
12521                         }
12522                         case CEE_MONO_LDPTR: {
12523                                 gpointer ptr;
12524
12525                                 CHECK_STACK_OVF (1);
12526                                 CHECK_OPSIZE (6);
12527                                 token = read32 (ip + 2);
12528
12529                                 ptr = mono_method_get_wrapper_data (method, token);
12530                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12531                                 *sp++ = ins;
12532                                 ip += 6;
12533                                 inline_costs += 10 * num_calls++;
12534                                 /* Can't embed random pointers into AOT code */
12535                                 DISABLE_AOT (cfg);
12536                                 break;
12537                         }
12538                         case CEE_MONO_JIT_ICALL_ADDR: {
12539                                 MonoJitICallInfo *callinfo;
12540                                 gpointer ptr;
12541
12542                                 CHECK_STACK_OVF (1);
12543                                 CHECK_OPSIZE (6);
12544                                 token = read32 (ip + 2);
12545
12546                                 ptr = mono_method_get_wrapper_data (method, token);
12547                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12548                                 g_assert (callinfo);
12549                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12550                                 *sp++ = ins;
12551                                 ip += 6;
12552                                 inline_costs += 10 * num_calls++;
12553                                 break;
12554                         }
12555                         case CEE_MONO_ICALL_ADDR: {
12556                                 MonoMethod *cmethod;
12557                                 gpointer ptr;
12558
12559                                 CHECK_STACK_OVF (1);
12560                                 CHECK_OPSIZE (6);
12561                                 token = read32 (ip + 2);
12562
12563                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12564
12565                                 if (cfg->compile_aot) {
12566                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12567                                 } else {
12568                                         ptr = mono_lookup_internal_call (cmethod);
12569                                         g_assert (ptr);
12570                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12571                                 }
12572                                 *sp++ = ins;
12573                                 ip += 6;
12574                                 break;
12575                         }
12576                         case CEE_MONO_VTADDR: {
12577                                 MonoInst *src_var, *src;
12578
12579                                 CHECK_STACK (1);
12580                                 --sp;
12581
12582                                 // FIXME:
12583                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12584                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12585                                 *sp++ = src;
12586                                 ip += 2;
12587                                 break;
12588                         }
12589                         case CEE_MONO_NEWOBJ: {
12590                                 MonoInst *iargs [2];
12591
12592                                 CHECK_STACK_OVF (1);
12593                                 CHECK_OPSIZE (6);
12594                                 token = read32 (ip + 2);
12595                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12596                                 mono_class_init (klass);
12597                                 NEW_DOMAINCONST (cfg, iargs [0]);
12598                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12599                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12600                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12601                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12602                                 ip += 6;
12603                                 inline_costs += 10 * num_calls++;
12604                                 break;
12605                         }
12606                         case CEE_MONO_OBJADDR:
12607                                 CHECK_STACK (1);
12608                                 --sp;
12609                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12610                                 ins->dreg = alloc_ireg_mp (cfg);
12611                                 ins->sreg1 = sp [0]->dreg;
12612                                 ins->type = STACK_MP;
12613                                 MONO_ADD_INS (cfg->cbb, ins);
12614                                 *sp++ = ins;
12615                                 ip += 2;
12616                                 break;
12617                         case CEE_MONO_LDNATIVEOBJ:
12618                                 /*
12619                                  * Similar to LDOBJ, but instead load the unmanaged
12620                                  * representation of the vtype to the stack.
12621                                  */
12622                                 CHECK_STACK (1);
12623                                 CHECK_OPSIZE (6);
12624                                 --sp;
12625                                 token = read32 (ip + 2);
12626                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12627                                 g_assert (klass->valuetype);
12628                                 mono_class_init (klass);
12629
12630                                 {
12631                                         MonoInst *src, *dest, *temp;
12632
12633                                         src = sp [0];
12634                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12635                                         temp->backend.is_pinvoke = 1;
12636                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12637                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12638
12639                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12640                                         dest->type = STACK_VTYPE;
12641                                         dest->klass = klass;
12642
12643                                         *sp ++ = dest;
12644                                         ip += 6;
12645                                 }
12646                                 break;
12647                         case CEE_MONO_RETOBJ: {
12648                                 /*
12649                                  * Same as RET, but return the native representation of a vtype
12650                                  * to the caller.
12651                                  */
12652                                 g_assert (cfg->ret);
12653                                 g_assert (mono_method_signature (method)->pinvoke);
12654                                 CHECK_STACK (1);
12655                                 --sp;
12656
12657                                 CHECK_OPSIZE (6);
12658                                 token = read32 (ip + 2);
12659                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12660
12661                                 if (!cfg->vret_addr) {
12662                                         g_assert (cfg->ret_var_is_local);
12663
12664                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12665                                 } else {
12666                                         EMIT_NEW_RETLOADA (cfg, ins);
12667                                 }
12668                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12669
12670                                 if (sp != stack_start)
12671                                         UNVERIFIED;
12672
12673                                 MONO_INST_NEW (cfg, ins, OP_BR);
12674                                 ins->inst_target_bb = end_bblock;
12675                                 MONO_ADD_INS (cfg->cbb, ins);
12676                                 link_bblock (cfg, cfg->cbb, end_bblock);
12677                                 start_new_bblock = 1;
12678                                 ip += 6;
12679                                 break;
12680                         }
12681                         case CEE_MONO_CISINST:
12682                         case CEE_MONO_CCASTCLASS: {
12683                                 int token;
12684                                 CHECK_STACK (1);
12685                                 --sp;
12686                                 CHECK_OPSIZE (6);
12687                                 token = read32 (ip + 2);
12688                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12689                                 if (ip [1] == CEE_MONO_CISINST)
12690                                         ins = handle_cisinst (cfg, klass, sp [0]);
12691                                 else
12692                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12693                                 *sp++ = ins;
12694                                 ip += 6;
12695                                 break;
12696                         }
12697                         case CEE_MONO_SAVE_LMF:
12698                         case CEE_MONO_RESTORE_LMF:
12699                                 ip += 2;
12700                                 break;
12701                         case CEE_MONO_CLASSCONST:
12702                                 CHECK_STACK_OVF (1);
12703                                 CHECK_OPSIZE (6);
12704                                 token = read32 (ip + 2);
12705                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12706                                 *sp++ = ins;
12707                                 ip += 6;
12708                                 inline_costs += 10 * num_calls++;
12709                                 break;
12710                         case CEE_MONO_NOT_TAKEN:
12711                                 cfg->cbb->out_of_line = TRUE;
12712                                 ip += 2;
12713                                 break;
12714                         case CEE_MONO_TLS: {
12715                                 MonoTlsKey key;
12716
12717                                 CHECK_STACK_OVF (1);
12718                                 CHECK_OPSIZE (6);
12719                                 key = (MonoTlsKey)read32 (ip + 2);
12720                                 g_assert (key < TLS_KEY_NUM);
12721
12722                                 ins = mono_create_tls_get (cfg, key);
12723                                 if (!ins) {
12724                                         if (cfg->compile_aot) {
12725                                                 DISABLE_AOT (cfg);
12726                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12727                                                 ins->dreg = alloc_preg (cfg);
12728                                                 ins->type = STACK_PTR;
12729                                         } else {
12730                                                 g_assert_not_reached ();
12731                                         }
12732                                 }
12733                                 ins->type = STACK_PTR;
12734                                 MONO_ADD_INS (cfg->cbb, ins);
12735                                 *sp++ = ins;
12736                                 ip += 6;
12737                                 break;
12738                         }
12739                         case CEE_MONO_DYN_CALL: {
12740                                 MonoCallInst *call;
12741
12742                                 /* It would be easier to call a trampoline, but that would put an
12743                                  * extra frame on the stack, confusing exception handling. So
12744                                  * implement it inline using an opcode for now.
12745                                  */
12746
12747                                 if (!cfg->dyn_call_var) {
12748                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12749                                         /* prevent it from being register allocated */
12750                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12751                                 }
12752
12753                                 /* Has to use a call inst since it local regalloc expects it */
12754                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12755                                 ins = (MonoInst*)call;
12756                                 sp -= 2;
12757                                 ins->sreg1 = sp [0]->dreg;
12758                                 ins->sreg2 = sp [1]->dreg;
12759                                 MONO_ADD_INS (cfg->cbb, ins);
12760
12761                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12762
12763                                 ip += 2;
12764                                 inline_costs += 10 * num_calls++;
12765
12766                                 break;
12767                         }
12768                         case CEE_MONO_MEMORY_BARRIER: {
12769                                 CHECK_OPSIZE (6);
12770                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12771                                 ip += 6;
12772                                 break;
12773                         }
12774                         case CEE_MONO_JIT_ATTACH: {
12775                                 MonoInst *args [16], *domain_ins;
12776                                 MonoInst *ad_ins, *jit_tls_ins;
12777                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12778
12779                                 g_assert (!mono_threads_is_coop_enabled ());
12780
12781                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12782
12783                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12784                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12785
12786                                 ad_ins = mono_get_domain_intrinsic (cfg);
12787                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12788
12789                                 if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12790                                         NEW_BBLOCK (cfg, next_bb);
12791                                         NEW_BBLOCK (cfg, call_bb);
12792
12793                                         if (cfg->compile_aot) {
12794                                                 /* AOT code is only used in the root domain */
12795                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12796                                         } else {
12797                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12798                                         }
12799                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12800                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12801                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12802
12803                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12804                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12805                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12806
12807                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12808                                         MONO_START_BB (cfg, call_bb);
12809                                 }
12810
12811                                 /* AOT code is only used in the root domain */
12812                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12813                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12814                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12815
12816                                 if (next_bb)
12817                                         MONO_START_BB (cfg, next_bb);
12818
12819
12820                                 ip += 2;
12821                                 break;
12822                         }
12823                         case CEE_MONO_JIT_DETACH: {
12824                                 MonoInst *args [16];
12825
12826                                 /* Restore the original domain */
12827                                 dreg = alloc_ireg (cfg);
12828                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12829                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12830                                 ip += 2;
12831                                 break;
12832                         }
12833                         case CEE_MONO_CALLI_EXTRA_ARG: {
12834                                 MonoInst *addr;
12835                                 MonoMethodSignature *fsig;
12836                                 MonoInst *arg;
12837
12838                                 /*
12839                                  * This is the same as CEE_CALLI, but passes an additional argument
12840                                  * to the called method in llvmonly mode.
12841                                  * This is only used by delegate invoke wrappers to call the
12842                                  * actual delegate method.
12843                                  */
12844                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12845
12846                                 CHECK_OPSIZE (6);
12847                                 token = read32 (ip + 2);
12848
12849                                 ins = NULL;
12850
12851                                 cmethod = NULL;
12852                                 CHECK_STACK (1);
12853                                 --sp;
12854                                 addr = *sp;
12855                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12856                                 CHECK_CFG_ERROR;
12857
12858                                 if (cfg->llvm_only)
12859                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12860
12861                                 n = fsig->param_count + fsig->hasthis + 1;
12862
12863                                 CHECK_STACK (n);
12864
12865                                 sp -= n;
12866                                 arg = sp [n - 1];
12867
12868                                 if (cfg->llvm_only) {
12869                                         /*
12870                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12871                                          * cconv. This is set by mono_init_delegate ().
12872                                          */
12873                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12874                                                 MonoInst *callee = addr;
12875                                                 MonoInst *call, *localloc_ins;
12876                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12877                                                 int low_bit_reg = alloc_preg (cfg);
12878
12879                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12880                                                 NEW_BBLOCK (cfg, end_bb);
12881
12882                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12883                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12884                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12885
12886                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12887                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12888                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12889                                                 /*
12890                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12891                                                  */
12892                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12893                                                 ins->dreg = alloc_preg (cfg);
12894                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12895                                                 MONO_ADD_INS (cfg->cbb, ins);
12896                                                 localloc_ins = ins;
12897                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12898                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12899                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12900
12901                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12902                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12903
12904                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12905                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12906                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12907                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12908                                                 ins->dreg = call->dreg;
12909
12910                                                 MONO_START_BB (cfg, end_bb);
12911                                         } else {
12912                                                 /* Caller uses a normal calling conv */
12913
12914                                                 MonoInst *callee = addr;
12915                                                 MonoInst *call, *localloc_ins;
12916                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12917                                                 int low_bit_reg = alloc_preg (cfg);
12918
12919                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12920                                                 NEW_BBLOCK (cfg, end_bb);
12921
12922                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12923                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12924                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12925
12926                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12927                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12928                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12929                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12930                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12931                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12932                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12933                                                 MONO_ADD_INS (cfg->cbb, addr);
12934                                                 /*
12935                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12936                                                  */
12937                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12938                                                 ins->dreg = alloc_preg (cfg);
12939                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12940                                                 MONO_ADD_INS (cfg->cbb, ins);
12941                                                 localloc_ins = ins;
12942                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12943                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12944                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12945
12946                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12947                                                 ins->dreg = call->dreg;
12948                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12949
12950                                                 MONO_START_BB (cfg, end_bb);
12951                                         }
12952                                 } else {
12953                                         /* Same as CEE_CALLI */
12954                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12955                                                 /*
12956                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12957                                                  */
12958                                                 MonoInst *callee = addr;
12959
12960                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12961                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12962                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12963                                         } else {
12964                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12965                                         }
12966                                 }
12967
12968                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12969                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12970
12971                                 CHECK_CFG_EXCEPTION;
12972
12973                                 ip += 6;
12974                                 ins_flag = 0;
12975                                 constrained_class = NULL;
12976                                 break;
12977                         }
12978                         case CEE_MONO_LDDOMAIN:
12979                                 CHECK_STACK_OVF (1);
12980                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12981                                 ip += 2;
12982                                 *sp++ = ins;
12983                                 break;
12984                         default:
12985                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12986                                 break;
12987                         }
12988                         break;
12989                 }
12990
12991                 case CEE_PREFIX1: {
12992                         CHECK_OPSIZE (2);
12993                         switch (ip [1]) {
12994                         case CEE_ARGLIST: {
12995                                 /* somewhat similar to LDTOKEN */
12996                                 MonoInst *addr, *vtvar;
12997                                 CHECK_STACK_OVF (1);
12998                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12999
13000                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
13001                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
13002
13003                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
13004                                 ins->type = STACK_VTYPE;
13005                                 ins->klass = mono_defaults.argumenthandle_class;
13006                                 *sp++ = ins;
13007                                 ip += 2;
13008                                 break;
13009                         }
13010                         case CEE_CEQ:
13011                         case CEE_CGT:
13012                         case CEE_CGT_UN:
13013                         case CEE_CLT:
13014                         case CEE_CLT_UN: {
13015                                 MonoInst *cmp, *arg1, *arg2;
13016
13017                                 CHECK_STACK (2);
13018                                 sp -= 2;
13019                                 arg1 = sp [0];
13020                                 arg2 = sp [1];
13021
13022                                 /*
13023                                  * The following transforms:
13024                                  *    CEE_CEQ    into OP_CEQ
13025                                  *    CEE_CGT    into OP_CGT
13026                                  *    CEE_CGT_UN into OP_CGT_UN
13027                                  *    CEE_CLT    into OP_CLT
13028                                  *    CEE_CLT_UN into OP_CLT_UN
13029                                  */
13030                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13031
13032                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13033                                 cmp->sreg1 = arg1->dreg;
13034                                 cmp->sreg2 = arg2->dreg;
13035                                 type_from_op (cfg, cmp, arg1, arg2);
13036                                 CHECK_TYPE (cmp);
13037                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13038                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13039                                         cmp->opcode = OP_LCOMPARE;
13040                                 else if (arg1->type == STACK_R4)
13041                                         cmp->opcode = OP_RCOMPARE;
13042                                 else if (arg1->type == STACK_R8)
13043                                         cmp->opcode = OP_FCOMPARE;
13044                                 else
13045                                         cmp->opcode = OP_ICOMPARE;
13046                                 MONO_ADD_INS (cfg->cbb, cmp);
13047                                 ins->type = STACK_I4;
13048                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13049                                 type_from_op (cfg, ins, arg1, arg2);
13050
13051                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13052                                         /*
13053                                          * The backends expect the fceq opcodes to do the
13054                                          * comparison too.
13055                                          */
13056                                         ins->sreg1 = cmp->sreg1;
13057                                         ins->sreg2 = cmp->sreg2;
13058                                         NULLIFY_INS (cmp);
13059                                 }
13060                                 MONO_ADD_INS (cfg->cbb, ins);
13061                                 *sp++ = ins;
13062                                 ip += 2;
13063                                 break;
13064                         }
13065                         case CEE_LDFTN: {
13066                                 MonoInst *argconst;
13067                                 MonoMethod *cil_method;
13068
13069                                 CHECK_STACK_OVF (1);
13070                                 CHECK_OPSIZE (6);
13071                                 n = read32 (ip + 2);
13072                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13073                                 CHECK_CFG_ERROR;
13074
13075                                 mono_class_init (cmethod->klass);
13076
13077                                 mono_save_token_info (cfg, image, n, cmethod);
13078
13079                                 context_used = mini_method_check_context_used (cfg, cmethod);
13080
13081                                 cil_method = cmethod;
13082                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13083                                         METHOD_ACCESS_FAILURE (method, cil_method);
13084
13085                                 if (mono_security_core_clr_enabled ())
13086                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13087
13088                                 /*
13089                                  * Optimize the common case of ldftn+delegate creation
13090                                  */
13091                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13092                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13093                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13094                                                 MonoInst *target_ins, *handle_ins;
13095                                                 MonoMethod *invoke;
13096                                                 int invoke_context_used;
13097
13098                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13099                                                 if (!invoke || !mono_method_signature (invoke))
13100                                                         LOAD_ERROR;
13101
13102                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13103
13104                                                 target_ins = sp [-1];
13105
13106                                                 if (mono_security_core_clr_enabled ())
13107                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13108
13109                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13110                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13111                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13112                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13113                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13114                                                         }
13115                                                 }
13116
13117                                                 /* FIXME: SGEN support */
13118                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13119                                                         ip += 6;
13120                                                         if (cfg->verbose_level > 3)
13121                                                                 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));
13122                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13123                                                                 sp --;
13124                                                                 *sp = handle_ins;
13125                                                                 CHECK_CFG_EXCEPTION;
13126                                                                 ip += 5;
13127                                                                 sp ++;
13128                                                                 break;
13129                                                         }
13130                                                         ip -= 6;
13131                                                 }
13132                                         }
13133                                 }
13134
13135                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13136                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13137                                 *sp++ = ins;
13138
13139                                 ip += 6;
13140                                 inline_costs += 10 * num_calls++;
13141                                 break;
13142                         }
13143                         case CEE_LDVIRTFTN: {
13144                                 MonoInst *args [2];
13145
13146                                 CHECK_STACK (1);
13147                                 CHECK_OPSIZE (6);
13148                                 n = read32 (ip + 2);
13149                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13150                                 CHECK_CFG_ERROR;
13151
13152                                 mono_class_init (cmethod->klass);
13153
13154                                 context_used = mini_method_check_context_used (cfg, cmethod);
13155
13156                                 if (mono_security_core_clr_enabled ())
13157                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13158
13159                                 /*
13160                                  * Optimize the common case of ldvirtftn+delegate creation
13161                                  */
13162                                 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)) {
13163                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13164                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13165                                                 MonoInst *target_ins, *handle_ins;
13166                                                 MonoMethod *invoke;
13167                                                 int invoke_context_used;
13168                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13169
13170                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13171                                                 if (!invoke || !mono_method_signature (invoke))
13172                                                         LOAD_ERROR;
13173
13174                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13175
13176                                                 target_ins = sp [-1];
13177
13178                                                 if (mono_security_core_clr_enabled ())
13179                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13180
13181                                                 /* FIXME: SGEN support */
13182                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13183                                                         ip += 6;
13184                                                         if (cfg->verbose_level > 3)
13185                                                                 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));
13186                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13187                                                                 sp -= 2;
13188                                                                 *sp = handle_ins;
13189                                                                 CHECK_CFG_EXCEPTION;
13190                                                                 ip += 5;
13191                                                                 sp ++;
13192                                                                 break;
13193                                                         }
13194                                                         ip -= 6;
13195                                                 }
13196                                         }
13197                                 }
13198
13199                                 --sp;
13200                                 args [0] = *sp;
13201
13202                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13203                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13204
13205                                 if (context_used)
13206                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13207                                 else
13208                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13209
13210                                 ip += 6;
13211                                 inline_costs += 10 * num_calls++;
13212                                 break;
13213                         }
13214                         case CEE_LDARG:
13215                                 CHECK_STACK_OVF (1);
13216                                 CHECK_OPSIZE (4);
13217                                 n = read16 (ip + 2);
13218                                 CHECK_ARG (n);
13219                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13220                                 *sp++ = ins;
13221                                 ip += 4;
13222                                 break;
13223                         case CEE_LDARGA:
13224                                 CHECK_STACK_OVF (1);
13225                                 CHECK_OPSIZE (4);
13226                                 n = read16 (ip + 2);
13227                                 CHECK_ARG (n);
13228                                 NEW_ARGLOADA (cfg, ins, n);
13229                                 MONO_ADD_INS (cfg->cbb, ins);
13230                                 *sp++ = ins;
13231                                 ip += 4;
13232                                 break;
13233                         case CEE_STARG:
13234                                 CHECK_STACK (1);
13235                                 --sp;
13236                                 CHECK_OPSIZE (4);
13237                                 n = read16 (ip + 2);
13238                                 CHECK_ARG (n);
13239                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13240                                         UNVERIFIED;
13241                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13242                                 ip += 4;
13243                                 break;
13244                         case CEE_LDLOC:
13245                                 CHECK_STACK_OVF (1);
13246                                 CHECK_OPSIZE (4);
13247                                 n = read16 (ip + 2);
13248                                 CHECK_LOCAL (n);
13249                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13250                                 *sp++ = ins;
13251                                 ip += 4;
13252                                 break;
13253                         case CEE_LDLOCA: {
13254                                 unsigned char *tmp_ip;
13255                                 CHECK_STACK_OVF (1);
13256                                 CHECK_OPSIZE (4);
13257                                 n = read16 (ip + 2);
13258                                 CHECK_LOCAL (n);
13259
13260                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13261                                         ip = tmp_ip;
13262                                         inline_costs += 1;
13263                                         break;
13264                                 }
13265
13266                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13267                                 *sp++ = ins;
13268                                 ip += 4;
13269                                 break;
13270                         }
13271                         case CEE_STLOC:
13272                                 CHECK_STACK (1);
13273                                 --sp;
13274                                 CHECK_OPSIZE (4);
13275                                 n = read16 (ip + 2);
13276                                 CHECK_LOCAL (n);
13277                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13278                                         UNVERIFIED;
13279                                 emit_stloc_ir (cfg, sp, header, n);
13280                                 ip += 4;
13281                                 inline_costs += 1;
13282                                 break;
13283                         case CEE_LOCALLOC:
13284                                 CHECK_STACK (1);
13285                                 --sp;
13286                                 if (sp != stack_start)
13287                                         UNVERIFIED;
13288                                 if (cfg->method != method)
13289                                         /*
13290                                          * Inlining this into a loop in a parent could lead to
13291                                          * stack overflows which is different behavior than the
13292                                          * non-inlined case, thus disable inlining in this case.
13293                                          */
13294                                         INLINE_FAILURE("localloc");
13295
13296                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13297                                 ins->dreg = alloc_preg (cfg);
13298                                 ins->sreg1 = sp [0]->dreg;
13299                                 ins->type = STACK_PTR;
13300                                 MONO_ADD_INS (cfg->cbb, ins);
13301
13302                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13303                                 if (init_locals)
13304                                         ins->flags |= MONO_INST_INIT;
13305
13306                                 *sp++ = ins;
13307                                 ip += 2;
13308                                 break;
13309                         case CEE_ENDFILTER: {
13310                                 MonoExceptionClause *clause, *nearest;
13311                                 int cc;
13312
13313                                 CHECK_STACK (1);
13314                                 --sp;
13315                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13316                                         UNVERIFIED;
13317                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13318                                 ins->sreg1 = (*sp)->dreg;
13319                                 MONO_ADD_INS (cfg->cbb, ins);
13320                                 start_new_bblock = 1;
13321                                 ip += 2;
13322
13323                                 nearest = NULL;
13324                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13325                                         clause = &header->clauses [cc];
13326                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13327                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13328                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13329                                                 nearest = clause;
13330                                 }
13331                                 g_assert (nearest);
13332                                 if ((ip - header->code) != nearest->handler_offset)
13333                                         UNVERIFIED;
13334
13335                                 break;
13336                         }
13337                         case CEE_UNALIGNED_:
13338                                 ins_flag |= MONO_INST_UNALIGNED;
13339                                 /* FIXME: record alignment? we can assume 1 for now */
13340                                 CHECK_OPSIZE (3);
13341                                 ip += 3;
13342                                 break;
13343                         case CEE_VOLATILE_:
13344                                 ins_flag |= MONO_INST_VOLATILE;
13345                                 ip += 2;
13346                                 break;
13347                         case CEE_TAIL_:
13348                                 ins_flag   |= MONO_INST_TAILCALL;
13349                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13350                                 /* Can't inline tail calls at this time */
13351                                 inline_costs += 100000;
13352                                 ip += 2;
13353                                 break;
13354                         case CEE_INITOBJ:
13355                                 CHECK_STACK (1);
13356                                 --sp;
13357                                 CHECK_OPSIZE (6);
13358                                 token = read32 (ip + 2);
13359                                 klass = mini_get_class (method, token, generic_context);
13360                                 CHECK_TYPELOAD (klass);
13361                                 if (generic_class_is_reference_type (cfg, klass))
13362                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13363                                 else
13364                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13365                                 ip += 6;
13366                                 inline_costs += 1;
13367                                 break;
13368                         case CEE_CONSTRAINED_:
13369                                 CHECK_OPSIZE (6);
13370                                 token = read32 (ip + 2);
13371                                 constrained_class = mini_get_class (method, token, generic_context);
13372                                 CHECK_TYPELOAD (constrained_class);
13373                                 ip += 6;
13374                                 break;
13375                         case CEE_CPBLK:
13376                         case CEE_INITBLK: {
13377                                 MonoInst *iargs [3];
13378                                 CHECK_STACK (3);
13379                                 sp -= 3;
13380
13381                                 /* Skip optimized paths for volatile operations. */
13382                                 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)) {
13383                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13384                                 } 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)) {
13385                                         /* emit_memset only works when val == 0 */
13386                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13387                                 } else {
13388                                         MonoInst *call;
13389                                         iargs [0] = sp [0];
13390                                         iargs [1] = sp [1];
13391                                         iargs [2] = sp [2];
13392                                         if (ip [1] == CEE_CPBLK) {
13393                                                 /*
13394                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13395                                                  * and release barriers for cpblk. It is technically both a load and
13396                                                  * store operation, so it seems like that's the sensible thing to do.
13397                                                  *
13398                                                  * FIXME: We emit full barriers on both sides of the operation for
13399                                                  * simplicity. We should have a separate atomic memcpy method instead.
13400                                                  */
13401                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13402
13403                                                 if (ins_flag & MONO_INST_VOLATILE)
13404                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13405
13406                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13407                                                 call->flags |= ins_flag;
13408
13409                                                 if (ins_flag & MONO_INST_VOLATILE)
13410                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13411                                         } else {
13412                                                 MonoMethod *memset_method = get_memset_method ();
13413                                                 if (ins_flag & MONO_INST_VOLATILE) {
13414                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13415                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13416                                                 }
13417                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13418                                                 call->flags |= ins_flag;
13419                                         }
13420                                 }
13421                                 ip += 2;
13422                                 ins_flag = 0;
13423                                 inline_costs += 1;
13424                                 break;
13425                         }
13426                         case CEE_NO_:
13427                                 CHECK_OPSIZE (3);
13428                                 if (ip [2] & 0x1)
13429                                         ins_flag |= MONO_INST_NOTYPECHECK;
13430                                 if (ip [2] & 0x2)
13431                                         ins_flag |= MONO_INST_NORANGECHECK;
13432                                 /* we ignore the no-nullcheck for now since we
13433                                  * really do it explicitly only when doing callvirt->call
13434                                  */
13435                                 ip += 3;
13436                                 break;
13437                         case CEE_RETHROW: {
13438                                 MonoInst *load;
13439                                 int handler_offset = -1;
13440
13441                                 for (i = 0; i < header->num_clauses; ++i) {
13442                                         MonoExceptionClause *clause = &header->clauses [i];
13443                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13444                                                 handler_offset = clause->handler_offset;
13445                                                 break;
13446                                         }
13447                                 }
13448
13449                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13450
13451                                 if (handler_offset == -1)
13452                                         UNVERIFIED;
13453
13454                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13455                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13456                                 ins->sreg1 = load->dreg;
13457                                 MONO_ADD_INS (cfg->cbb, ins);
13458
13459                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13460                                 MONO_ADD_INS (cfg->cbb, ins);
13461
13462                                 sp = stack_start;
13463                                 link_bblock (cfg, cfg->cbb, end_bblock);
13464                                 start_new_bblock = 1;
13465                                 ip += 2;
13466                                 break;
13467                         }
13468                         case CEE_SIZEOF: {
13469                                 guint32 val;
13470                                 int ialign;
13471
13472                                 CHECK_STACK_OVF (1);
13473                                 CHECK_OPSIZE (6);
13474                                 token = read32 (ip + 2);
13475                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13476                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13477                                         CHECK_CFG_ERROR;
13478
13479                                         val = mono_type_size (type, &ialign);
13480                                 } else {
13481                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13482                                         CHECK_TYPELOAD (klass);
13483
13484                                         val = mono_type_size (&klass->byval_arg, &ialign);
13485
13486                                         if (mini_is_gsharedvt_klass (klass))
13487                                                 GSHAREDVT_FAILURE (*ip);
13488                                 }
13489                                 EMIT_NEW_ICONST (cfg, ins, val);
13490                                 *sp++= ins;
13491                                 ip += 6;
13492                                 break;
13493                         }
13494                         case CEE_REFANYTYPE: {
13495                                 MonoInst *src_var, *src;
13496
13497                                 GSHAREDVT_FAILURE (*ip);
13498
13499                                 CHECK_STACK (1);
13500                                 --sp;
13501
13502                                 // FIXME:
13503                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13504                                 if (!src_var)
13505                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13506                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13507                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13508                                 *sp++ = ins;
13509                                 ip += 2;
13510                                 break;
13511                         }
13512                         case CEE_READONLY_:
13513                                 readonly = TRUE;
13514                                 ip += 2;
13515                                 break;
13516
13517                         case CEE_UNUSED56:
13518                         case CEE_UNUSED57:
13519                         case CEE_UNUSED70:
13520                         case CEE_UNUSED:
13521                         case CEE_UNUSED99:
13522                                 UNVERIFIED;
13523
13524                         default:
13525                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13526                                 UNVERIFIED;
13527                         }
13528                         break;
13529                 }
13530                 case CEE_UNUSED58:
13531                 case CEE_UNUSED1:
13532                         UNVERIFIED;
13533
13534                 default:
13535                         g_warning ("opcode 0x%02x not handled", *ip);
13536                         UNVERIFIED;
13537                 }
13538         }
13539         if (start_new_bblock != 1)
13540                 UNVERIFIED;
13541
13542         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13543         if (cfg->cbb->next_bb) {
13544                 /* This could already be set because of inlining, #693905 */
13545                 MonoBasicBlock *bb = cfg->cbb;
13546
13547                 while (bb->next_bb)
13548                         bb = bb->next_bb;
13549                 bb->next_bb = end_bblock;
13550         } else {
13551                 cfg->cbb->next_bb = end_bblock;
13552         }
13553
13554         if (cfg->method == method && cfg->domainvar) {
13555                 MonoInst *store;
13556                 MonoInst *get_domain;
13557
13558                 cfg->cbb = init_localsbb;
13559
13560                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13561                         MONO_ADD_INS (cfg->cbb, get_domain);
13562                 } else {
13563                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13564                 }
13565                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13566                 MONO_ADD_INS (cfg->cbb, store);
13567         }
13568
13569 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13570         if (cfg->compile_aot)
13571                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13572                 mono_get_got_var (cfg);
13573 #endif
13574
13575         if (cfg->method == method && cfg->got_var)
13576                 mono_emit_load_got_addr (cfg);
13577
13578         if (init_localsbb) {
13579                 cfg->cbb = init_localsbb;
13580                 cfg->ip = NULL;
13581                 for (i = 0; i < header->num_locals; ++i) {
13582                         emit_init_local (cfg, i, header->locals [i], init_locals);
13583                 }
13584         }
13585
13586         if (cfg->init_ref_vars && cfg->method == method) {
13587                 /* Emit initialization for ref vars */
13588                 // FIXME: Avoid duplication initialization for IL locals.
13589                 for (i = 0; i < cfg->num_varinfo; ++i) {
13590                         MonoInst *ins = cfg->varinfo [i];
13591
13592                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13593                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13594                 }
13595         }
13596
13597         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13598                 cfg->cbb = init_localsbb;
13599                 emit_push_lmf (cfg);
13600         }
13601
13602         cfg->cbb = init_localsbb;
13603         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13604
13605         if (seq_points) {
13606                 MonoBasicBlock *bb;
13607
13608                 /*
13609                  * Make seq points at backward branch targets interruptable.
13610                  */
13611                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13612                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13613                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13614         }
13615
13616         /* Add a sequence point for method entry/exit events */
13617         if (seq_points && cfg->gen_sdb_seq_points) {
13618                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13619                 MONO_ADD_INS (init_localsbb, ins);
13620                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13621                 MONO_ADD_INS (cfg->bb_exit, ins);
13622         }
13623
13624         /*
13625          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13626          * the code they refer to was dead (#11880).
13627          */
13628         if (sym_seq_points) {
13629                 for (i = 0; i < header->code_size; ++i) {
13630                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13631                                 MonoInst *ins;
13632
13633                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13634                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13635                         }
13636                 }
13637         }
13638
13639         cfg->ip = NULL;
13640
13641         if (cfg->method == method) {
13642                 MonoBasicBlock *bb;
13643                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13644                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13645                         if (cfg->spvars)
13646                                 mono_create_spvar_for_region (cfg, bb->region);
13647                         if (cfg->verbose_level > 2)
13648                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13649                 }
13650         } else {
13651                 MonoBasicBlock *bb;
13652                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13653                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13654                         bb->real_offset = inline_offset;
13655                 }
13656         }
13657
13658         if (inline_costs < 0) {
13659                 char *mname;
13660
13661                 /* Method is too large */
13662                 mname = mono_method_full_name (method, TRUE);
13663                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13664                 g_free (mname);
13665         }
13666
13667         if ((cfg->verbose_level > 2) && (cfg->method == method))
13668                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13669
13670         goto cleanup;
13671
13672 mono_error_exit:
13673         g_assert (!mono_error_ok (&cfg->error));
13674         goto cleanup;
13675
13676  exception_exit:
13677         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13678         goto cleanup;
13679
13680  unverified:
13681         set_exception_type_from_invalid_il (cfg, method, ip);
13682         goto cleanup;
13683
13684  cleanup:
13685         g_slist_free (class_inits);
13686         mono_basic_block_free (original_bb);
13687         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13688         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13689         if (cfg->exception_type)
13690                 return -1;
13691         else
13692                 return inline_costs;
13693 }
13694
13695 static int
13696 store_membase_reg_to_store_membase_imm (int opcode)
13697 {
13698         switch (opcode) {
13699         case OP_STORE_MEMBASE_REG:
13700                 return OP_STORE_MEMBASE_IMM;
13701         case OP_STOREI1_MEMBASE_REG:
13702                 return OP_STOREI1_MEMBASE_IMM;
13703         case OP_STOREI2_MEMBASE_REG:
13704                 return OP_STOREI2_MEMBASE_IMM;
13705         case OP_STOREI4_MEMBASE_REG:
13706                 return OP_STOREI4_MEMBASE_IMM;
13707         case OP_STOREI8_MEMBASE_REG:
13708                 return OP_STOREI8_MEMBASE_IMM;
13709         default:
13710                 g_assert_not_reached ();
13711         }
13712
13713         return -1;
13714 }
13715
13716 int
13717 mono_op_to_op_imm (int opcode)
13718 {
13719         switch (opcode) {
13720         case OP_IADD:
13721                 return OP_IADD_IMM;
13722         case OP_ISUB:
13723                 return OP_ISUB_IMM;
13724         case OP_IDIV:
13725                 return OP_IDIV_IMM;
13726         case OP_IDIV_UN:
13727                 return OP_IDIV_UN_IMM;
13728         case OP_IREM:
13729                 return OP_IREM_IMM;
13730         case OP_IREM_UN:
13731                 return OP_IREM_UN_IMM;
13732         case OP_IMUL:
13733                 return OP_IMUL_IMM;
13734         case OP_IAND:
13735                 return OP_IAND_IMM;
13736         case OP_IOR:
13737                 return OP_IOR_IMM;
13738         case OP_IXOR:
13739                 return OP_IXOR_IMM;
13740         case OP_ISHL:
13741                 return OP_ISHL_IMM;
13742         case OP_ISHR:
13743                 return OP_ISHR_IMM;
13744         case OP_ISHR_UN:
13745                 return OP_ISHR_UN_IMM;
13746
13747         case OP_LADD:
13748                 return OP_LADD_IMM;
13749         case OP_LSUB:
13750                 return OP_LSUB_IMM;
13751         case OP_LAND:
13752                 return OP_LAND_IMM;
13753         case OP_LOR:
13754                 return OP_LOR_IMM;
13755         case OP_LXOR:
13756                 return OP_LXOR_IMM;
13757         case OP_LSHL:
13758                 return OP_LSHL_IMM;
13759         case OP_LSHR:
13760                 return OP_LSHR_IMM;
13761         case OP_LSHR_UN:
13762                 return OP_LSHR_UN_IMM;
13763 #if SIZEOF_REGISTER == 8
13764         case OP_LREM:
13765                 return OP_LREM_IMM;
13766 #endif
13767
13768         case OP_COMPARE:
13769                 return OP_COMPARE_IMM;
13770         case OP_ICOMPARE:
13771                 return OP_ICOMPARE_IMM;
13772         case OP_LCOMPARE:
13773                 return OP_LCOMPARE_IMM;
13774
13775         case OP_STORE_MEMBASE_REG:
13776                 return OP_STORE_MEMBASE_IMM;
13777         case OP_STOREI1_MEMBASE_REG:
13778                 return OP_STOREI1_MEMBASE_IMM;
13779         case OP_STOREI2_MEMBASE_REG:
13780                 return OP_STOREI2_MEMBASE_IMM;
13781         case OP_STOREI4_MEMBASE_REG:
13782                 return OP_STOREI4_MEMBASE_IMM;
13783
13784 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13785         case OP_X86_PUSH:
13786                 return OP_X86_PUSH_IMM;
13787         case OP_X86_COMPARE_MEMBASE_REG:
13788                 return OP_X86_COMPARE_MEMBASE_IMM;
13789 #endif
13790 #if defined(TARGET_AMD64)
13791         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13792                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13793 #endif
13794         case OP_VOIDCALL_REG:
13795                 return OP_VOIDCALL;
13796         case OP_CALL_REG:
13797                 return OP_CALL;
13798         case OP_LCALL_REG:
13799                 return OP_LCALL;
13800         case OP_FCALL_REG:
13801                 return OP_FCALL;
13802         case OP_LOCALLOC:
13803                 return OP_LOCALLOC_IMM;
13804         }
13805
13806         return -1;
13807 }
13808
13809 static int
13810 ldind_to_load_membase (int opcode)
13811 {
13812         switch (opcode) {
13813         case CEE_LDIND_I1:
13814                 return OP_LOADI1_MEMBASE;
13815         case CEE_LDIND_U1:
13816                 return OP_LOADU1_MEMBASE;
13817         case CEE_LDIND_I2:
13818                 return OP_LOADI2_MEMBASE;
13819         case CEE_LDIND_U2:
13820                 return OP_LOADU2_MEMBASE;
13821         case CEE_LDIND_I4:
13822                 return OP_LOADI4_MEMBASE;
13823         case CEE_LDIND_U4:
13824                 return OP_LOADU4_MEMBASE;
13825         case CEE_LDIND_I:
13826                 return OP_LOAD_MEMBASE;
13827         case CEE_LDIND_REF:
13828                 return OP_LOAD_MEMBASE;
13829         case CEE_LDIND_I8:
13830                 return OP_LOADI8_MEMBASE;
13831         case CEE_LDIND_R4:
13832                 return OP_LOADR4_MEMBASE;
13833         case CEE_LDIND_R8:
13834                 return OP_LOADR8_MEMBASE;
13835         default:
13836                 g_assert_not_reached ();
13837         }
13838
13839         return -1;
13840 }
13841
13842 static int
13843 stind_to_store_membase (int opcode)
13844 {
13845         switch (opcode) {
13846         case CEE_STIND_I1:
13847                 return OP_STOREI1_MEMBASE_REG;
13848         case CEE_STIND_I2:
13849                 return OP_STOREI2_MEMBASE_REG;
13850         case CEE_STIND_I4:
13851                 return OP_STOREI4_MEMBASE_REG;
13852         case CEE_STIND_I:
13853         case CEE_STIND_REF:
13854                 return OP_STORE_MEMBASE_REG;
13855         case CEE_STIND_I8:
13856                 return OP_STOREI8_MEMBASE_REG;
13857         case CEE_STIND_R4:
13858                 return OP_STORER4_MEMBASE_REG;
13859         case CEE_STIND_R8:
13860                 return OP_STORER8_MEMBASE_REG;
13861         default:
13862                 g_assert_not_reached ();
13863         }
13864
13865         return -1;
13866 }
13867
13868 int
13869 mono_load_membase_to_load_mem (int opcode)
13870 {
13871         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13872 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13873         switch (opcode) {
13874         case OP_LOAD_MEMBASE:
13875                 return OP_LOAD_MEM;
13876         case OP_LOADU1_MEMBASE:
13877                 return OP_LOADU1_MEM;
13878         case OP_LOADU2_MEMBASE:
13879                 return OP_LOADU2_MEM;
13880         case OP_LOADI4_MEMBASE:
13881                 return OP_LOADI4_MEM;
13882         case OP_LOADU4_MEMBASE:
13883                 return OP_LOADU4_MEM;
13884 #if SIZEOF_REGISTER == 8
13885         case OP_LOADI8_MEMBASE:
13886                 return OP_LOADI8_MEM;
13887 #endif
13888         }
13889 #endif
13890
13891         return -1;
13892 }
13893
13894 static inline int
13895 op_to_op_dest_membase (int store_opcode, int opcode)
13896 {
13897 #if defined(TARGET_X86)
13898         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13899                 return -1;
13900
13901         switch (opcode) {
13902         case OP_IADD:
13903                 return OP_X86_ADD_MEMBASE_REG;
13904         case OP_ISUB:
13905                 return OP_X86_SUB_MEMBASE_REG;
13906         case OP_IAND:
13907                 return OP_X86_AND_MEMBASE_REG;
13908         case OP_IOR:
13909                 return OP_X86_OR_MEMBASE_REG;
13910         case OP_IXOR:
13911                 return OP_X86_XOR_MEMBASE_REG;
13912         case OP_ADD_IMM:
13913         case OP_IADD_IMM:
13914                 return OP_X86_ADD_MEMBASE_IMM;
13915         case OP_SUB_IMM:
13916         case OP_ISUB_IMM:
13917                 return OP_X86_SUB_MEMBASE_IMM;
13918         case OP_AND_IMM:
13919         case OP_IAND_IMM:
13920                 return OP_X86_AND_MEMBASE_IMM;
13921         case OP_OR_IMM:
13922         case OP_IOR_IMM:
13923                 return OP_X86_OR_MEMBASE_IMM;
13924         case OP_XOR_IMM:
13925         case OP_IXOR_IMM:
13926                 return OP_X86_XOR_MEMBASE_IMM;
13927         case OP_MOVE:
13928                 return OP_NOP;
13929         }
13930 #endif
13931
13932 #if defined(TARGET_AMD64)
13933         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13934                 return -1;
13935
13936         switch (opcode) {
13937         case OP_IADD:
13938                 return OP_X86_ADD_MEMBASE_REG;
13939         case OP_ISUB:
13940                 return OP_X86_SUB_MEMBASE_REG;
13941         case OP_IAND:
13942                 return OP_X86_AND_MEMBASE_REG;
13943         case OP_IOR:
13944                 return OP_X86_OR_MEMBASE_REG;
13945         case OP_IXOR:
13946                 return OP_X86_XOR_MEMBASE_REG;
13947         case OP_IADD_IMM:
13948                 return OP_X86_ADD_MEMBASE_IMM;
13949         case OP_ISUB_IMM:
13950                 return OP_X86_SUB_MEMBASE_IMM;
13951         case OP_IAND_IMM:
13952                 return OP_X86_AND_MEMBASE_IMM;
13953         case OP_IOR_IMM:
13954                 return OP_X86_OR_MEMBASE_IMM;
13955         case OP_IXOR_IMM:
13956                 return OP_X86_XOR_MEMBASE_IMM;
13957         case OP_LADD:
13958                 return OP_AMD64_ADD_MEMBASE_REG;
13959         case OP_LSUB:
13960                 return OP_AMD64_SUB_MEMBASE_REG;
13961         case OP_LAND:
13962                 return OP_AMD64_AND_MEMBASE_REG;
13963         case OP_LOR:
13964                 return OP_AMD64_OR_MEMBASE_REG;
13965         case OP_LXOR:
13966                 return OP_AMD64_XOR_MEMBASE_REG;
13967         case OP_ADD_IMM:
13968         case OP_LADD_IMM:
13969                 return OP_AMD64_ADD_MEMBASE_IMM;
13970         case OP_SUB_IMM:
13971         case OP_LSUB_IMM:
13972                 return OP_AMD64_SUB_MEMBASE_IMM;
13973         case OP_AND_IMM:
13974         case OP_LAND_IMM:
13975                 return OP_AMD64_AND_MEMBASE_IMM;
13976         case OP_OR_IMM:
13977         case OP_LOR_IMM:
13978                 return OP_AMD64_OR_MEMBASE_IMM;
13979         case OP_XOR_IMM:
13980         case OP_LXOR_IMM:
13981                 return OP_AMD64_XOR_MEMBASE_IMM;
13982         case OP_MOVE:
13983                 return OP_NOP;
13984         }
13985 #endif
13986
13987         return -1;
13988 }
13989
13990 static inline int
13991 op_to_op_store_membase (int store_opcode, int opcode)
13992 {
13993 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13994         switch (opcode) {
13995         case OP_ICEQ:
13996                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13997                         return OP_X86_SETEQ_MEMBASE;
13998         case OP_CNE:
13999                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14000                         return OP_X86_SETNE_MEMBASE;
14001         }
14002 #endif
14003
14004         return -1;
14005 }
14006
14007 static inline int
14008 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
14009 {
14010 #ifdef TARGET_X86
14011         /* FIXME: This has sign extension issues */
14012         /*
14013         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14014                 return OP_X86_COMPARE_MEMBASE8_IMM;
14015         */
14016
14017         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14018                 return -1;
14019
14020         switch (opcode) {
14021         case OP_X86_PUSH:
14022                 return OP_X86_PUSH_MEMBASE;
14023         case OP_COMPARE_IMM:
14024         case OP_ICOMPARE_IMM:
14025                 return OP_X86_COMPARE_MEMBASE_IMM;
14026         case OP_COMPARE:
14027         case OP_ICOMPARE:
14028                 return OP_X86_COMPARE_MEMBASE_REG;
14029         }
14030 #endif
14031
14032 #ifdef TARGET_AMD64
14033         /* FIXME: This has sign extension issues */
14034         /*
14035         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14036                 return OP_X86_COMPARE_MEMBASE8_IMM;
14037         */
14038
14039         switch (opcode) {
14040         case OP_X86_PUSH:
14041                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14042                         return OP_X86_PUSH_MEMBASE;
14043                 break;
14044                 /* FIXME: This only works for 32 bit immediates
14045         case OP_COMPARE_IMM:
14046         case OP_LCOMPARE_IMM:
14047                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14048                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14049                 */
14050         case OP_ICOMPARE_IMM:
14051                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14052                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14053                 break;
14054         case OP_COMPARE:
14055         case OP_LCOMPARE:
14056                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14057                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14058                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14059                         return OP_AMD64_COMPARE_MEMBASE_REG;
14060                 break;
14061         case OP_ICOMPARE:
14062                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14063                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14064                 break;
14065         }
14066 #endif
14067
14068         return -1;
14069 }
14070
14071 static inline int
14072 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14073 {
14074 #ifdef TARGET_X86
14075         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14076                 return -1;
14077
14078         switch (opcode) {
14079         case OP_COMPARE:
14080         case OP_ICOMPARE:
14081                 return OP_X86_COMPARE_REG_MEMBASE;
14082         case OP_IADD:
14083                 return OP_X86_ADD_REG_MEMBASE;
14084         case OP_ISUB:
14085                 return OP_X86_SUB_REG_MEMBASE;
14086         case OP_IAND:
14087                 return OP_X86_AND_REG_MEMBASE;
14088         case OP_IOR:
14089                 return OP_X86_OR_REG_MEMBASE;
14090         case OP_IXOR:
14091                 return OP_X86_XOR_REG_MEMBASE;
14092         }
14093 #endif
14094
14095 #ifdef TARGET_AMD64
14096         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14097                 switch (opcode) {
14098                 case OP_ICOMPARE:
14099                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14100                 case OP_IADD:
14101                         return OP_X86_ADD_REG_MEMBASE;
14102                 case OP_ISUB:
14103                         return OP_X86_SUB_REG_MEMBASE;
14104                 case OP_IAND:
14105                         return OP_X86_AND_REG_MEMBASE;
14106                 case OP_IOR:
14107                         return OP_X86_OR_REG_MEMBASE;
14108                 case OP_IXOR:
14109                         return OP_X86_XOR_REG_MEMBASE;
14110                 }
14111         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14112                 switch (opcode) {
14113                 case OP_COMPARE:
14114                 case OP_LCOMPARE:
14115                         return OP_AMD64_COMPARE_REG_MEMBASE;
14116                 case OP_LADD:
14117                         return OP_AMD64_ADD_REG_MEMBASE;
14118                 case OP_LSUB:
14119                         return OP_AMD64_SUB_REG_MEMBASE;
14120                 case OP_LAND:
14121                         return OP_AMD64_AND_REG_MEMBASE;
14122                 case OP_LOR:
14123                         return OP_AMD64_OR_REG_MEMBASE;
14124                 case OP_LXOR:
14125                         return OP_AMD64_XOR_REG_MEMBASE;
14126                 }
14127         }
14128 #endif
14129
14130         return -1;
14131 }
14132
14133 int
14134 mono_op_to_op_imm_noemul (int opcode)
14135 {
14136         switch (opcode) {
14137 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14138         case OP_LSHR:
14139         case OP_LSHL:
14140         case OP_LSHR_UN:
14141                 return -1;
14142 #endif
14143 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14144         case OP_IDIV:
14145         case OP_IDIV_UN:
14146         case OP_IREM:
14147         case OP_IREM_UN:
14148                 return -1;
14149 #endif
14150 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14151         case OP_IMUL:
14152                 return -1;
14153 #endif
14154         default:
14155                 return mono_op_to_op_imm (opcode);
14156         }
14157 }
14158
14159 /**
14160  * mono_handle_global_vregs:
14161  *
14162  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14163  * for them.
14164  */
14165 void
14166 mono_handle_global_vregs (MonoCompile *cfg)
14167 {
14168         gint32 *vreg_to_bb;
14169         MonoBasicBlock *bb;
14170         int i, pos;
14171
14172         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14173
14174 #ifdef MONO_ARCH_SIMD_INTRINSICS
14175         if (cfg->uses_simd_intrinsics)
14176                 mono_simd_simplify_indirection (cfg);
14177 #endif
14178
14179         /* Find local vregs used in more than one bb */
14180         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14181                 MonoInst *ins = bb->code;
14182                 int block_num = bb->block_num;
14183
14184                 if (cfg->verbose_level > 2)
14185                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14186
14187                 cfg->cbb = bb;
14188                 for (; ins; ins = ins->next) {
14189                         const char *spec = INS_INFO (ins->opcode);
14190                         int regtype = 0, regindex;
14191                         gint32 prev_bb;
14192
14193                         if (G_UNLIKELY (cfg->verbose_level > 2))
14194                                 mono_print_ins (ins);
14195
14196                         g_assert (ins->opcode >= MONO_CEE_LAST);
14197
14198                         for (regindex = 0; regindex < 4; regindex ++) {
14199                                 int vreg = 0;
14200
14201                                 if (regindex == 0) {
14202                                         regtype = spec [MONO_INST_DEST];
14203                                         if (regtype == ' ')
14204                                                 continue;
14205                                         vreg = ins->dreg;
14206                                 } else if (regindex == 1) {
14207                                         regtype = spec [MONO_INST_SRC1];
14208                                         if (regtype == ' ')
14209                                                 continue;
14210                                         vreg = ins->sreg1;
14211                                 } else if (regindex == 2) {
14212                                         regtype = spec [MONO_INST_SRC2];
14213                                         if (regtype == ' ')
14214                                                 continue;
14215                                         vreg = ins->sreg2;
14216                                 } else if (regindex == 3) {
14217                                         regtype = spec [MONO_INST_SRC3];
14218                                         if (regtype == ' ')
14219                                                 continue;
14220                                         vreg = ins->sreg3;
14221                                 }
14222
14223 #if SIZEOF_REGISTER == 4
14224                                 /* In the LLVM case, the long opcodes are not decomposed */
14225                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14226                                         /*
14227                                          * Since some instructions reference the original long vreg,
14228                                          * and some reference the two component vregs, it is quite hard
14229                                          * to determine when it needs to be global. So be conservative.
14230                                          */
14231                                         if (!get_vreg_to_inst (cfg, vreg)) {
14232                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14233
14234                                                 if (cfg->verbose_level > 2)
14235                                                         printf ("LONG VREG R%d made global.\n", vreg);
14236                                         }
14237
14238                                         /*
14239                                          * Make the component vregs volatile since the optimizations can
14240                                          * get confused otherwise.
14241                                          */
14242                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14243                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14244                                 }
14245 #endif
14246
14247                                 g_assert (vreg != -1);
14248
14249                                 prev_bb = vreg_to_bb [vreg];
14250                                 if (prev_bb == 0) {
14251                                         /* 0 is a valid block num */
14252                                         vreg_to_bb [vreg] = block_num + 1;
14253                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14254                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14255                                                 continue;
14256
14257                                         if (!get_vreg_to_inst (cfg, vreg)) {
14258                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14259                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14260
14261                                                 switch (regtype) {
14262                                                 case 'i':
14263                                                         if (vreg_is_ref (cfg, vreg))
14264                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14265                                                         else
14266                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14267                                                         break;
14268                                                 case 'l':
14269                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14270                                                         break;
14271                                                 case 'f':
14272                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14273                                                         break;
14274                                                 case 'v':
14275                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14276                                                         break;
14277                                                 default:
14278                                                         g_assert_not_reached ();
14279                                                 }
14280                                         }
14281
14282                                         /* Flag as having been used in more than one bb */
14283                                         vreg_to_bb [vreg] = -1;
14284                                 }
14285                         }
14286                 }
14287         }
14288
14289         /* If a variable is used in only one bblock, convert it into a local vreg */
14290         for (i = 0; i < cfg->num_varinfo; i++) {
14291                 MonoInst *var = cfg->varinfo [i];
14292                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14293
14294                 switch (var->type) {
14295                 case STACK_I4:
14296                 case STACK_OBJ:
14297                 case STACK_PTR:
14298                 case STACK_MP:
14299                 case STACK_VTYPE:
14300 #if SIZEOF_REGISTER == 8
14301                 case STACK_I8:
14302 #endif
14303 #if !defined(TARGET_X86)
14304                 /* Enabling this screws up the fp stack on x86 */
14305                 case STACK_R8:
14306 #endif
14307                         if (mono_arch_is_soft_float ())
14308                                 break;
14309
14310                         /*
14311                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14312                                 break;
14313                         */
14314
14315                         /* Arguments are implicitly global */
14316                         /* Putting R4 vars into registers doesn't work currently */
14317                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14318                         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) {
14319                                 /*
14320                                  * Make that the variable's liveness interval doesn't contain a call, since
14321                                  * that would cause the lvreg to be spilled, making the whole optimization
14322                                  * useless.
14323                                  */
14324                                 /* This is too slow for JIT compilation */
14325 #if 0
14326                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14327                                         MonoInst *ins;
14328                                         int def_index, call_index, ins_index;
14329                                         gboolean spilled = FALSE;
14330
14331                                         def_index = -1;
14332                                         call_index = -1;
14333                                         ins_index = 0;
14334                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14335                                                 const char *spec = INS_INFO (ins->opcode);
14336
14337                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14338                                                         def_index = ins_index;
14339
14340                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14341                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14342                                                         if (call_index > def_index) {
14343                                                                 spilled = TRUE;
14344                                                                 break;
14345                                                         }
14346                                                 }
14347
14348                                                 if (MONO_IS_CALL (ins))
14349                                                         call_index = ins_index;
14350
14351                                                 ins_index ++;
14352                                         }
14353
14354                                         if (spilled)
14355                                                 break;
14356                                 }
14357 #endif
14358
14359                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14360                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14361                                 var->flags |= MONO_INST_IS_DEAD;
14362                                 cfg->vreg_to_inst [var->dreg] = NULL;
14363                         }
14364                         break;
14365                 }
14366         }
14367
14368         /*
14369          * Compress the varinfo and vars tables so the liveness computation is faster and
14370          * takes up less space.
14371          */
14372         pos = 0;
14373         for (i = 0; i < cfg->num_varinfo; ++i) {
14374                 MonoInst *var = cfg->varinfo [i];
14375                 if (pos < i && cfg->locals_start == i)
14376                         cfg->locals_start = pos;
14377                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14378                         if (pos < i) {
14379                                 cfg->varinfo [pos] = cfg->varinfo [i];
14380                                 cfg->varinfo [pos]->inst_c0 = pos;
14381                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14382                                 cfg->vars [pos].idx = pos;
14383 #if SIZEOF_REGISTER == 4
14384                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14385                                         /* Modify the two component vars too */
14386                                         MonoInst *var1;
14387
14388                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14389                                         var1->inst_c0 = pos;
14390                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14391                                         var1->inst_c0 = pos;
14392                                 }
14393 #endif
14394                         }
14395                         pos ++;
14396                 }
14397         }
14398         cfg->num_varinfo = pos;
14399         if (cfg->locals_start > cfg->num_varinfo)
14400                 cfg->locals_start = cfg->num_varinfo;
14401 }
14402
14403 /*
14404  * mono_allocate_gsharedvt_vars:
14405  *
14406  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14407  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14408  */
14409 void
14410 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14411 {
14412         int i;
14413
14414         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14415
14416         for (i = 0; i < cfg->num_varinfo; ++i) {
14417                 MonoInst *ins = cfg->varinfo [i];
14418                 int idx;
14419
14420                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14421                         if (i >= cfg->locals_start) {
14422                                 /* Local */
14423                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14424                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14425                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14426                                 ins->inst_imm = idx;
14427                         } else {
14428                                 /* Arg */
14429                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14430                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14431                         }
14432                 }
14433         }
14434 }
14435
14436 /**
14437  * mono_spill_global_vars:
14438  *
14439  *   Generate spill code for variables which are not allocated to registers,
14440  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14441  * code is generated which could be optimized by the local optimization passes.
14442  */
14443 void
14444 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14445 {
14446         MonoBasicBlock *bb;
14447         char spec2 [16];
14448         int orig_next_vreg;
14449         guint32 *vreg_to_lvreg;
14450         guint32 *lvregs;
14451         guint32 i, lvregs_len;
14452         gboolean dest_has_lvreg = FALSE;
14453         MonoStackType stacktypes [128];
14454         MonoInst **live_range_start, **live_range_end;
14455         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14456
14457         *need_local_opts = FALSE;
14458
14459         memset (spec2, 0, sizeof (spec2));
14460
14461         /* FIXME: Move this function to mini.c */
14462         stacktypes ['i'] = STACK_PTR;
14463         stacktypes ['l'] = STACK_I8;
14464         stacktypes ['f'] = STACK_R8;
14465 #ifdef MONO_ARCH_SIMD_INTRINSICS
14466         stacktypes ['x'] = STACK_VTYPE;
14467 #endif
14468
14469 #if SIZEOF_REGISTER == 4
14470         /* Create MonoInsts for longs */
14471         for (i = 0; i < cfg->num_varinfo; i++) {
14472                 MonoInst *ins = cfg->varinfo [i];
14473
14474                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14475                         switch (ins->type) {
14476                         case STACK_R8:
14477                         case STACK_I8: {
14478                                 MonoInst *tree;
14479
14480                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14481                                         break;
14482
14483                                 g_assert (ins->opcode == OP_REGOFFSET);
14484
14485                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14486                                 g_assert (tree);
14487                                 tree->opcode = OP_REGOFFSET;
14488                                 tree->inst_basereg = ins->inst_basereg;
14489                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14490
14491                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14492                                 g_assert (tree);
14493                                 tree->opcode = OP_REGOFFSET;
14494                                 tree->inst_basereg = ins->inst_basereg;
14495                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14496                                 break;
14497                         }
14498                         default:
14499                                 break;
14500                         }
14501                 }
14502         }
14503 #endif
14504
14505         if (cfg->compute_gc_maps) {
14506                 /* registers need liveness info even for !non refs */
14507                 for (i = 0; i < cfg->num_varinfo; i++) {
14508                         MonoInst *ins = cfg->varinfo [i];
14509
14510                         if (ins->opcode == OP_REGVAR)
14511                                 ins->flags |= MONO_INST_GC_TRACK;
14512                 }
14513         }
14514
14515         /* FIXME: widening and truncation */
14516
14517         /*
14518          * As an optimization, when a variable allocated to the stack is first loaded into
14519          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14520          * the variable again.
14521          */
14522         orig_next_vreg = cfg->next_vreg;
14523         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14524         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14525         lvregs_len = 0;
14526
14527         /*
14528          * These arrays contain the first and last instructions accessing a given
14529          * variable.
14530          * Since we emit bblocks in the same order we process them here, and we
14531          * don't split live ranges, these will precisely describe the live range of
14532          * the variable, i.e. the instruction range where a valid value can be found
14533          * in the variables location.
14534          * The live range is computed using the liveness info computed by the liveness pass.
14535          * We can't use vmv->range, since that is an abstract live range, and we need
14536          * one which is instruction precise.
14537          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14538          */
14539         /* FIXME: Only do this if debugging info is requested */
14540         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14541         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14542         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14543         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14544
14545         /* Add spill loads/stores */
14546         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14547                 MonoInst *ins;
14548
14549                 if (cfg->verbose_level > 2)
14550                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14551
14552                 /* Clear vreg_to_lvreg array */
14553                 for (i = 0; i < lvregs_len; i++)
14554                         vreg_to_lvreg [lvregs [i]] = 0;
14555                 lvregs_len = 0;
14556
14557                 cfg->cbb = bb;
14558                 MONO_BB_FOR_EACH_INS (bb, ins) {
14559                         const char *spec = INS_INFO (ins->opcode);
14560                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14561                         gboolean store, no_lvreg;
14562                         int sregs [MONO_MAX_SRC_REGS];
14563
14564                         if (G_UNLIKELY (cfg->verbose_level > 2))
14565                                 mono_print_ins (ins);
14566
14567                         if (ins->opcode == OP_NOP)
14568                                 continue;
14569
14570                         /*
14571                          * We handle LDADDR here as well, since it can only be decomposed
14572                          * when variable addresses are known.
14573                          */
14574                         if (ins->opcode == OP_LDADDR) {
14575                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14576
14577                                 if (var->opcode == OP_VTARG_ADDR) {
14578                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14579                                         MonoInst *vtaddr = var->inst_left;
14580                                         if (vtaddr->opcode == OP_REGVAR) {
14581                                                 ins->opcode = OP_MOVE;
14582                                                 ins->sreg1 = vtaddr->dreg;
14583                                         }
14584                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14585                                                 ins->opcode = OP_LOAD_MEMBASE;
14586                                                 ins->inst_basereg = vtaddr->inst_basereg;
14587                                                 ins->inst_offset = vtaddr->inst_offset;
14588                                         } else
14589                                                 NOT_IMPLEMENTED;
14590                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14591                                         /* gsharedvt arg passed by ref */
14592                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14593
14594                                         ins->opcode = OP_LOAD_MEMBASE;
14595                                         ins->inst_basereg = var->inst_basereg;
14596                                         ins->inst_offset = var->inst_offset;
14597                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14598                                         MonoInst *load, *load2, *load3;
14599                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14600                                         int reg1, reg2, reg3;
14601                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14602                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14603
14604                                         /*
14605                                          * gsharedvt local.
14606                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14607                                          */
14608
14609                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14610
14611                                         g_assert (info_var);
14612                                         g_assert (locals_var);
14613
14614                                         /* Mark the instruction used to compute the locals var as used */
14615                                         cfg->gsharedvt_locals_var_ins = NULL;
14616
14617                                         /* Load the offset */
14618                                         if (info_var->opcode == OP_REGOFFSET) {
14619                                                 reg1 = alloc_ireg (cfg);
14620                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14621                                         } else if (info_var->opcode == OP_REGVAR) {
14622                                                 load = NULL;
14623                                                 reg1 = info_var->dreg;
14624                                         } else {
14625                                                 g_assert_not_reached ();
14626                                         }
14627                                         reg2 = alloc_ireg (cfg);
14628                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14629                                         /* Load the locals area address */
14630                                         reg3 = alloc_ireg (cfg);
14631                                         if (locals_var->opcode == OP_REGOFFSET) {
14632                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14633                                         } else if (locals_var->opcode == OP_REGVAR) {
14634                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14635                                         } else {
14636                                                 g_assert_not_reached ();
14637                                         }
14638                                         /* Compute the address */
14639                                         ins->opcode = OP_PADD;
14640                                         ins->sreg1 = reg3;
14641                                         ins->sreg2 = reg2;
14642
14643                                         mono_bblock_insert_before_ins (bb, ins, load3);
14644                                         mono_bblock_insert_before_ins (bb, load3, load2);
14645                                         if (load)
14646                                                 mono_bblock_insert_before_ins (bb, load2, load);
14647                                 } else {
14648                                         g_assert (var->opcode == OP_REGOFFSET);
14649
14650                                         ins->opcode = OP_ADD_IMM;
14651                                         ins->sreg1 = var->inst_basereg;
14652                                         ins->inst_imm = var->inst_offset;
14653                                 }
14654
14655                                 *need_local_opts = TRUE;
14656                                 spec = INS_INFO (ins->opcode);
14657                         }
14658
14659                         if (ins->opcode < MONO_CEE_LAST) {
14660                                 mono_print_ins (ins);
14661                                 g_assert_not_reached ();
14662                         }
14663
14664                         /*
14665                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14666                          * src register.
14667                          * FIXME:
14668                          */
14669                         if (MONO_IS_STORE_MEMBASE (ins)) {
14670                                 tmp_reg = ins->dreg;
14671                                 ins->dreg = ins->sreg2;
14672                                 ins->sreg2 = tmp_reg;
14673                                 store = TRUE;
14674
14675                                 spec2 [MONO_INST_DEST] = ' ';
14676                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14677                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14678                                 spec2 [MONO_INST_SRC3] = ' ';
14679                                 spec = spec2;
14680                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14681                                 g_assert_not_reached ();
14682                         else
14683                                 store = FALSE;
14684                         no_lvreg = FALSE;
14685
14686                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14687                                 printf ("\t %.3s %d", spec, ins->dreg);
14688                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14689                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14690                                         printf (" %d", sregs [srcindex]);
14691                                 printf ("\n");
14692                         }
14693
14694                         /***************/
14695                         /*    DREG     */
14696                         /***************/
14697                         regtype = spec [MONO_INST_DEST];
14698                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14699                         prev_dreg = -1;
14700
14701                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14702                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14703                                 MonoInst *store_ins;
14704                                 int store_opcode;
14705                                 MonoInst *def_ins = ins;
14706                                 int dreg = ins->dreg; /* The original vreg */
14707
14708                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14709
14710                                 if (var->opcode == OP_REGVAR) {
14711                                         ins->dreg = var->dreg;
14712                                 } 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)) {
14713                                         /*
14714                                          * Instead of emitting a load+store, use a _membase opcode.
14715                                          */
14716                                         g_assert (var->opcode == OP_REGOFFSET);
14717                                         if (ins->opcode == OP_MOVE) {
14718                                                 NULLIFY_INS (ins);
14719                                                 def_ins = NULL;
14720                                         } else {
14721                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14722                                                 ins->inst_basereg = var->inst_basereg;
14723                                                 ins->inst_offset = var->inst_offset;
14724                                                 ins->dreg = -1;
14725                                         }
14726                                         spec = INS_INFO (ins->opcode);
14727                                 } else {
14728                                         guint32 lvreg;
14729
14730                                         g_assert (var->opcode == OP_REGOFFSET);
14731
14732                                         prev_dreg = ins->dreg;
14733
14734                                         /* Invalidate any previous lvreg for this vreg */
14735                                         vreg_to_lvreg [ins->dreg] = 0;
14736
14737                                         lvreg = 0;
14738
14739                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14740                                                 regtype = 'l';
14741                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14742                                         }
14743
14744                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14745
14746 #if SIZEOF_REGISTER != 8
14747                                         if (regtype == 'l') {
14748                                                 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));
14749                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14750                                                 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));
14751                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14752                                                 def_ins = store_ins;
14753                                         }
14754                                         else
14755 #endif
14756                                         {
14757                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14758
14759                                                 /* Try to fuse the store into the instruction itself */
14760                                                 /* FIXME: Add more instructions */
14761                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14762                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14763                                                         ins->inst_imm = ins->inst_c0;
14764                                                         ins->inst_destbasereg = var->inst_basereg;
14765                                                         ins->inst_offset = var->inst_offset;
14766                                                         spec = INS_INFO (ins->opcode);
14767                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14768                                                         ins->opcode = store_opcode;
14769                                                         ins->inst_destbasereg = var->inst_basereg;
14770                                                         ins->inst_offset = var->inst_offset;
14771
14772                                                         no_lvreg = TRUE;
14773
14774                                                         tmp_reg = ins->dreg;
14775                                                         ins->dreg = ins->sreg2;
14776                                                         ins->sreg2 = tmp_reg;
14777                                                         store = TRUE;
14778
14779                                                         spec2 [MONO_INST_DEST] = ' ';
14780                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14781                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14782                                                         spec2 [MONO_INST_SRC3] = ' ';
14783                                                         spec = spec2;
14784                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14785                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14786                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14787                                                         ins->dreg = -1;
14788                                                         ins->inst_basereg = var->inst_basereg;
14789                                                         ins->inst_offset = var->inst_offset;
14790                                                         spec = INS_INFO (ins->opcode);
14791                                                 } else {
14792                                                         /* printf ("INS: "); mono_print_ins (ins); */
14793                                                         /* Create a store instruction */
14794                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14795
14796                                                         /* Insert it after the instruction */
14797                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14798
14799                                                         def_ins = store_ins;
14800
14801                                                         /*
14802                                                          * We can't assign ins->dreg to var->dreg here, since the
14803                                                          * sregs could use it. So set a flag, and do it after
14804                                                          * the sregs.
14805                                                          */
14806                                                         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)))
14807                                                                 dest_has_lvreg = TRUE;
14808                                                 }
14809                                         }
14810                                 }
14811
14812                                 if (def_ins && !live_range_start [dreg]) {
14813                                         live_range_start [dreg] = def_ins;
14814                                         live_range_start_bb [dreg] = bb;
14815                                 }
14816
14817                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14818                                         MonoInst *tmp;
14819
14820                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14821                                         tmp->inst_c1 = dreg;
14822                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14823                                 }
14824                         }
14825
14826                         /************/
14827                         /*  SREGS   */
14828                         /************/
14829                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14830                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14831                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14832                                 sreg = sregs [srcindex];
14833
14834                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14835                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14836                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14837                                         MonoInst *use_ins = ins;
14838                                         MonoInst *load_ins;
14839                                         guint32 load_opcode;
14840
14841                                         if (var->opcode == OP_REGVAR) {
14842                                                 sregs [srcindex] = var->dreg;
14843                                                 //mono_inst_set_src_registers (ins, sregs);
14844                                                 live_range_end [sreg] = use_ins;
14845                                                 live_range_end_bb [sreg] = bb;
14846
14847                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14848                                                         MonoInst *tmp;
14849
14850                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14851                                                         /* var->dreg is a hreg */
14852                                                         tmp->inst_c1 = sreg;
14853                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14854                                                 }
14855
14856                                                 continue;
14857                                         }
14858
14859                                         g_assert (var->opcode == OP_REGOFFSET);
14860
14861                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14862
14863                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14864
14865                                         if (vreg_to_lvreg [sreg]) {
14866                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14867
14868                                                 /* The variable is already loaded to an lvreg */
14869                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14870                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14871                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14872                                                 //mono_inst_set_src_registers (ins, sregs);
14873                                                 continue;
14874                                         }
14875
14876                                         /* Try to fuse the load into the instruction */
14877                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14878                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14879                                                 sregs [0] = var->inst_basereg;
14880                                                 //mono_inst_set_src_registers (ins, sregs);
14881                                                 ins->inst_offset = var->inst_offset;
14882                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14883                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14884                                                 sregs [1] = var->inst_basereg;
14885                                                 //mono_inst_set_src_registers (ins, sregs);
14886                                                 ins->inst_offset = var->inst_offset;
14887                                         } else {
14888                                                 if (MONO_IS_REAL_MOVE (ins)) {
14889                                                         ins->opcode = OP_NOP;
14890                                                         sreg = ins->dreg;
14891                                                 } else {
14892                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14893
14894                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14895
14896                                                         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) {
14897                                                                 if (var->dreg == prev_dreg) {
14898                                                                         /*
14899                                                                          * sreg refers to the value loaded by the load
14900                                                                          * emitted below, but we need to use ins->dreg
14901                                                                          * since it refers to the store emitted earlier.
14902                                                                          */
14903                                                                         sreg = ins->dreg;
14904                                                                 }
14905                                                                 g_assert (sreg != -1);
14906                                                                 vreg_to_lvreg [var->dreg] = sreg;
14907                                                                 g_assert (lvregs_len < 1024);
14908                                                                 lvregs [lvregs_len ++] = var->dreg;
14909                                                         }
14910                                                 }
14911
14912                                                 sregs [srcindex] = sreg;
14913                                                 //mono_inst_set_src_registers (ins, sregs);
14914
14915 #if SIZEOF_REGISTER != 8
14916                                                 if (regtype == 'l') {
14917                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14918                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14919                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14920                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14921                                                         use_ins = load_ins;
14922                                                 }
14923                                                 else
14924 #endif
14925                                                 {
14926 #if SIZEOF_REGISTER == 4
14927                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14928 #endif
14929                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14930                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14931                                                         use_ins = load_ins;
14932                                                 }
14933                                         }
14934
14935                                         if (var->dreg < orig_next_vreg) {
14936                                                 live_range_end [var->dreg] = use_ins;
14937                                                 live_range_end_bb [var->dreg] = bb;
14938                                         }
14939
14940                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14941                                                 MonoInst *tmp;
14942
14943                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14944                                                 tmp->inst_c1 = var->dreg;
14945                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14946                                         }
14947                                 }
14948                         }
14949                         mono_inst_set_src_registers (ins, sregs);
14950
14951                         if (dest_has_lvreg) {
14952                                 g_assert (ins->dreg != -1);
14953                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14954                                 g_assert (lvregs_len < 1024);
14955                                 lvregs [lvregs_len ++] = prev_dreg;
14956                                 dest_has_lvreg = FALSE;
14957                         }
14958
14959                         if (store) {
14960                                 tmp_reg = ins->dreg;
14961                                 ins->dreg = ins->sreg2;
14962                                 ins->sreg2 = tmp_reg;
14963                         }
14964
14965                         if (MONO_IS_CALL (ins)) {
14966                                 /* Clear vreg_to_lvreg array */
14967                                 for (i = 0; i < lvregs_len; i++)
14968                                         vreg_to_lvreg [lvregs [i]] = 0;
14969                                 lvregs_len = 0;
14970                         } else if (ins->opcode == OP_NOP) {
14971                                 ins->dreg = -1;
14972                                 MONO_INST_NULLIFY_SREGS (ins);
14973                         }
14974
14975                         if (cfg->verbose_level > 2)
14976                                 mono_print_ins_index (1, ins);
14977                 }
14978
14979                 /* Extend the live range based on the liveness info */
14980                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14981                         for (i = 0; i < cfg->num_varinfo; i ++) {
14982                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14983
14984                                 if (vreg_is_volatile (cfg, vi->vreg))
14985                                         /* The liveness info is incomplete */
14986                                         continue;
14987
14988                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14989                                         /* Live from at least the first ins of this bb */
14990                                         live_range_start [vi->vreg] = bb->code;
14991                                         live_range_start_bb [vi->vreg] = bb;
14992                                 }
14993
14994                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14995                                         /* Live at least until the last ins of this bb */
14996                                         live_range_end [vi->vreg] = bb->last_ins;
14997                                         live_range_end_bb [vi->vreg] = bb;
14998                                 }
14999                         }
15000                 }
15001         }
15002
15003         /*
15004          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
15005          * by storing the current native offset into MonoMethodVar->live_range_start/end.
15006          */
15007         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
15008                 for (i = 0; i < cfg->num_varinfo; ++i) {
15009                         int vreg = MONO_VARINFO (cfg, i)->vreg;
15010                         MonoInst *ins;
15011
15012                         if (live_range_start [vreg]) {
15013                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
15014                                 ins->inst_c0 = i;
15015                                 ins->inst_c1 = vreg;
15016                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
15017                         }
15018                         if (live_range_end [vreg]) {
15019                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15020                                 ins->inst_c0 = i;
15021                                 ins->inst_c1 = vreg;
15022                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15023                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15024                                 else
15025                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15026                         }
15027                 }
15028         }
15029
15030         if (cfg->gsharedvt_locals_var_ins) {
15031                 /* Nullify if unused */
15032                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15033                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15034         }
15035
15036         g_free (live_range_start);
15037         g_free (live_range_end);
15038         g_free (live_range_start_bb);
15039         g_free (live_range_end_bb);
15040 }
15041
15042 /**
15043  * FIXME:
15044  * - use 'iadd' instead of 'int_add'
15045  * - handling ovf opcodes: decompose in method_to_ir.
15046  * - unify iregs/fregs
15047  *   -> partly done, the missing parts are:
15048  *   - a more complete unification would involve unifying the hregs as well, so
15049  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15050  *     would no longer map to the machine hregs, so the code generators would need to
15051  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15052  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15053  *     fp/non-fp branches speeds it up by about 15%.
15054  * - use sext/zext opcodes instead of shifts
15055  * - add OP_ICALL
15056  * - get rid of TEMPLOADs if possible and use vregs instead
15057  * - clean up usage of OP_P/OP_ opcodes
15058  * - cleanup usage of DUMMY_USE
15059  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15060  *   stack
15061  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15062  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15063  * - make sure handle_stack_args () is called before the branch is emitted
15064  * - when the new IR is done, get rid of all unused stuff
15065  * - COMPARE/BEQ as separate instructions or unify them ?
15066  *   - keeping them separate allows specialized compare instructions like
15067  *     compare_imm, compare_membase
15068  *   - most back ends unify fp compare+branch, fp compare+ceq
15069  * - integrate mono_save_args into inline_method
15070  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15071  * - handle long shift opts on 32 bit platforms somehow: they require
15072  *   3 sregs (2 for arg1 and 1 for arg2)
15073  * - make byref a 'normal' type.
15074  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15075  *   variable if needed.
15076  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15077  *   like inline_method.
15078  * - remove inlining restrictions
15079  * - fix LNEG and enable cfold of INEG
15080  * - generalize x86 optimizations like ldelema as a peephole optimization
15081  * - add store_mem_imm for amd64
15082  * - optimize the loading of the interruption flag in the managed->native wrappers
15083  * - avoid special handling of OP_NOP in passes
15084  * - move code inserting instructions into one function/macro.
15085  * - try a coalescing phase after liveness analysis
15086  * - add float -> vreg conversion + local optimizations on !x86
15087  * - figure out how to handle decomposed branches during optimizations, ie.
15088  *   compare+branch, op_jump_table+op_br etc.
15089  * - promote RuntimeXHandles to vregs
15090  * - vtype cleanups:
15091  *   - add a NEW_VARLOADA_VREG macro
15092  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15093  *   accessing vtype fields.
15094  * - get rid of I8CONST on 64 bit platforms
15095  * - dealing with the increase in code size due to branches created during opcode
15096  *   decomposition:
15097  *   - use extended basic blocks
15098  *     - all parts of the JIT
15099  *     - handle_global_vregs () && local regalloc
15100  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15101  * - sources of increase in code size:
15102  *   - vtypes
15103  *   - long compares
15104  *   - isinst and castclass
15105  *   - lvregs not allocated to global registers even if used multiple times
15106  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15107  *   meaningful.
15108  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15109  * - add all micro optimizations from the old JIT
15110  * - put tree optimizations into the deadce pass
15111  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15112  *   specific function.
15113  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15114  *   fcompare + branchCC.
15115  * - create a helper function for allocating a stack slot, taking into account
15116  *   MONO_CFG_HAS_SPILLUP.
15117  * - merge r68207.
15118  * - merge the ia64 switch changes.
15119  * - optimize mono_regstate2_alloc_int/float.
15120  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15121  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15122  *   parts of the tree could be separated by other instructions, killing the tree
15123  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15124  *   instructions if the result of the load is used multiple times ?
15125  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15126  * - LAST MERGE: 108395.
15127  * - when returning vtypes in registers, generate IR and append it to the end of the
15128  *   last bb instead of doing it in the epilog.
15129  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15130  */
15131
15132 /*
15133
15134 NOTES
15135 -----
15136
15137 - When to decompose opcodes:
15138   - earlier: this makes some optimizations hard to implement, since the low level IR
15139   no longer contains the neccessary information. But it is easier to do.
15140   - later: harder to implement, enables more optimizations.
15141 - Branches inside bblocks:
15142   - created when decomposing complex opcodes.
15143     - branches to another bblock: harmless, but not tracked by the branch
15144       optimizations, so need to branch to a label at the start of the bblock.
15145     - branches to inside the same bblock: very problematic, trips up the local
15146       reg allocator. Can be fixed by spitting the current bblock, but that is a
15147       complex operation, since some local vregs can become global vregs etc.
15148 - Local/global vregs:
15149   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15150     local register allocator.
15151   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15152     structure, created by mono_create_var (). Assigned to hregs or the stack by
15153     the global register allocator.
15154 - When to do optimizations like alu->alu_imm:
15155   - earlier -> saves work later on since the IR will be smaller/simpler
15156   - later -> can work on more instructions
15157 - Handling of valuetypes:
15158   - When a vtype is pushed on the stack, a new temporary is created, an
15159     instruction computing its address (LDADDR) is emitted and pushed on
15160     the stack. Need to optimize cases when the vtype is used immediately as in
15161     argument passing, stloc etc.
15162 - Instead of the to_end stuff in the old JIT, simply call the function handling
15163   the values on the stack before emitting the last instruction of the bb.
15164 */
15165
15166 #endif /* DISABLE_JIT */