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  */
  12
  13 #include <config.h>
  14
  15 #ifndef DISABLE_JIT
  16
  17 #include <signal.h>
  18
  19 #ifdef HAVE_UNISTD_H
  20 #include <unistd.h>
  21 #endif
  22
  23 #include <math.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26
  27 #ifdef HAVE_SYS_TIME_H
  28 #include <sys/time.h>
  29 #endif
  30
  31 #ifdef HAVE_ALLOCA_H
  32 #include <alloca.h>
  33 #endif
  34
  35 #include <mono/utils/memcheck.h>
  36 #include "mini.h"
  37 #include <mono/metadata/abi-details.h>
  38 #include <mono/metadata/assembly.h>
  39 #include <mono/metadata/attrdefs.h>
  40 #include <mono/metadata/loader.h>
  41 #include <mono/metadata/tabledefs.h>
  42 #include <mono/metadata/class.h>
  43 #include <mono/metadata/object.h>
  44 #include <mono/metadata/exception.h>
  45 #include <mono/metadata/opcodes.h>
  46 #include <mono/metadata/mono-endian.h>
  47 #include <mono/metadata/tokentype.h>
  48 #include <mono/metadata/tabledefs.h>
  49 #include <mono/metadata/marshal.h>
  50 #include <mono/metadata/debug-helpers.h>
  51 #include <mono/metadata/mono-debug.h>
  52 #include <mono/metadata/gc-internal.h>
  53 #include <mono/metadata/security-manager.h>
  54 #include <mono/metadata/threads-types.h>
  55 #include <mono/metadata/security-core-clr.h>
  56 #include <mono/metadata/monitor.h>
  57 #include <mono/metadata/profiler-private.h>
  58 #include <mono/metadata/profiler.h>
  59 #include <mono/metadata/debug-mono-symfile.h>
  60 #include <mono/utils/mono-compiler.h>
  61 #include <mono/utils/mono-memory-model.h>
  62 #include <mono/metadata/mono-basic-block.h>
  63
  64 #include "trace.h"
  65
  66 #include "ir-emit.h"
  67
  68 #include "jit-icalls.h"
  69 #include "jit.h"
  70 #include "debugger-agent.h"
  71 #include "seq-points.h"
  72
  73 #define BRANCH_COST 10
  74 #define INLINE_LENGTH_LIMIT 20
  75
  76 /* These have 'cfg' as an implicit argument */
  77 #define INLINE_FAILURE(msg) do {                                                                        \
  78         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  79                 inline_failure (cfg, msg);                                                                              \
  80                 goto exception_exit;                                                                                    \
  81         } \
  82         } while (0)
  83 #define CHECK_CFG_EXCEPTION do {\
  84                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  85                         goto exception_exit;                                            \
  86         } while (0)
  87 #define METHOD_ACCESS_FAILURE(method, cmethod) do {                     \
  88                 method_access_failure ((cfg), (method), (cmethod));                     \
  89                 goto exception_exit;                                                                            \
  90         } while (0)
  91 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  92                 field_access_failure ((cfg), (method), (field));                        \
  93                 goto exception_exit;    \
  94         } while (0)
  95 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  96                 if (cfg->gshared) {                                                                     \
  97                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
  98                         goto exception_exit;    \
  99                 }                       \
 100         } while (0)
 101 #define GSHAREDVT_FAILURE(opcode) do {          \
 102         if (cfg->gsharedvt) {                                                                                           \
 103                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 104                 goto exception_exit;                                                                                    \
 105         }                                                                                                                                       \
 106         } while (0)
 107 #define OUT_OF_MEMORY_FAILURE do {      \
 108                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_OUT_OF_MEMORY);             \
 109                 goto exception_exit;    \
 110         } while (0)
 111 #define DISABLE_AOT(cfg) do { \
 112                 if ((cfg)->verbose_level >= 2)                                            \
 113                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 114                 (cfg)->disable_aot = TRUE;                                                        \
 115         } while (0)
 116 #define LOAD_ERROR do { \
 117                 break_on_unverified ();                                                         \
 118                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 119                 goto exception_exit;                                                                    \
 120         } while (0)
 121
 122 #define TYPE_LOAD_ERROR(klass) do { \
 123                 cfg->exception_ptr = klass; \
 124                 LOAD_ERROR;                                     \
 125         } while (0)
 126
 127 #define CHECK_CFG_ERROR do {\
 128                 if (!mono_error_ok (&cfg->error)) { \
 129                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 130                         goto mono_error_exit; \
 131                 } \
 132         } while (0)
 133
 134 /* Determine whenever 'ins' represents a load of the 'this' argument */
 135 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 136
 137 static int ldind_to_load_membase (int opcode);
 138 static int stind_to_store_membase (int opcode);
 139
 140 int mono_op_to_op_imm (int opcode);
 141 int mono_op_to_op_imm_noemul (int opcode);
 142
 143 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 144
 145 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 146                                                   guchar *ip, guint real_offset, gboolean inline_always, MonoBasicBlock **out_cbb);
 147
 148 /* helper methods signatures */
 149 static MonoMethodSignature *helper_sig_class_init_trampoline;
 150 static MonoMethodSignature *helper_sig_domain_get;
 151 static MonoMethodSignature *helper_sig_generic_class_init_trampoline;
 152 static MonoMethodSignature *helper_sig_generic_class_init_trampoline_llvm;
 153 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 154 static MonoMethodSignature *helper_sig_monitor_enter_exit_trampoline;
 155 static MonoMethodSignature *helper_sig_monitor_enter_exit_trampoline_llvm;
 156 static MonoMethodSignature *helper_sig_monitor_enter_v4_trampoline_llvm;
 157
 158 /*
 159  * Instruction metadata
 160  */
 161 #ifdef MINI_OP
 162 #undef MINI_OP
 163 #endif
 164 #ifdef MINI_OP3
 165 #undef MINI_OP3
 166 #endif
 167 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 168 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 169 #define NONE ' '
 170 #define IREG 'i'
 171 #define FREG 'f'
 172 #define VREG 'v'
 173 #define XREG 'x'
 174 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 175 #define LREG IREG
 176 #else
 177 #define LREG 'l'
 178 #endif
 179 /* keep in sync with the enum in mini.h */
 180 const char
 181 ins_info[] = {
 182 #include "mini-ops.h"
 183 };
 184 #undef MINI_OP
 185 #undef MINI_OP3
 186
 187 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 188 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 189 /*
 190  * This should contain the index of the last sreg + 1. This is not the same
 191  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 192  */
 193 const gint8 ins_sreg_counts[] = {
 194 #include "mini-ops.h"
 195 };
 196 #undef MINI_OP
 197 #undef MINI_OP3
 198
 199 #define MONO_INIT_VARINFO(vi,id) do { \
 200         (vi)->range.first_use.pos.bid = 0xffff; \
 201         (vi)->reg = -1; \
 202         (vi)->idx = (id); \
 203 } while (0)
 204
 205 guint32
 206 mono_alloc_ireg (MonoCompile *cfg)
 207 {
 208         return alloc_ireg (cfg);
 209 }
 210
 211 guint32
 212 mono_alloc_lreg (MonoCompile *cfg)
 213 {
 214         return alloc_lreg (cfg);
 215 }
 216
 217 guint32
 218 mono_alloc_freg (MonoCompile *cfg)
 219 {
 220         return alloc_freg (cfg);
 221 }
 222
 223 guint32
 224 mono_alloc_preg (MonoCompile *cfg)
 225 {
 226         return alloc_preg (cfg);
 227 }
 228
 229 guint32
 230 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 231 {
 232         return alloc_dreg (cfg, stack_type);
 233 }
 234
 235 /*
 236  * mono_alloc_ireg_ref:
 237  *
 238  *   Allocate an IREG, and mark it as holding a GC ref.
 239  */
 240 guint32
 241 mono_alloc_ireg_ref (MonoCompile *cfg)
 242 {
 243         return alloc_ireg_ref (cfg);
 244 }
 245
 246 /*
 247  * mono_alloc_ireg_mp:
 248  *
 249  *   Allocate an IREG, and mark it as holding a managed pointer.
 250  */
 251 guint32
 252 mono_alloc_ireg_mp (MonoCompile *cfg)
 253 {
 254         return alloc_ireg_mp (cfg);
 255 }
 256
 257 /*
 258  * mono_alloc_ireg_copy:
 259  *
 260  *   Allocate an IREG with the same GC type as VREG.
 261  */
 262 guint32
 263 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 264 {
 265         if (vreg_is_ref (cfg, vreg))
 266                 return alloc_ireg_ref (cfg);
 267         else if (vreg_is_mp (cfg, vreg))
 268                 return alloc_ireg_mp (cfg);
 269         else
 270                 return alloc_ireg (cfg);
 271 }
 272
 273 guint
 274 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 275 {
 276         if (type->byref)
 277                 return OP_MOVE;
 278
 279         type = mini_replace_type (type);
 280 handle_enum:
 281         switch (type->type) {
 282         case MONO_TYPE_I1:
 283         case MONO_TYPE_U1:
 284         case MONO_TYPE_BOOLEAN:
 285                 return OP_MOVE;
 286         case MONO_TYPE_I2:
 287         case MONO_TYPE_U2:
 288         case MONO_TYPE_CHAR:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I4:
 291         case MONO_TYPE_U4:
 292                 return OP_MOVE;
 293         case MONO_TYPE_I:
 294         case MONO_TYPE_U:
 295         case MONO_TYPE_PTR:
 296         case MONO_TYPE_FNPTR:
 297                 return OP_MOVE;
 298         case MONO_TYPE_CLASS:
 299         case MONO_TYPE_STRING:
 300         case MONO_TYPE_OBJECT:
 301         case MONO_TYPE_SZARRAY:
 302         case MONO_TYPE_ARRAY:
 303                 return OP_MOVE;
 304         case MONO_TYPE_I8:
 305         case MONO_TYPE_U8:
 306 #if SIZEOF_REGISTER == 8
 307                 return OP_MOVE;
 308 #else
 309                 return OP_LMOVE;
 310 #endif
 311         case MONO_TYPE_R4:
 312                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 313         case MONO_TYPE_R8:
 314                 return OP_FMOVE;
 315         case MONO_TYPE_VALUETYPE:
 316                 if (type->data.klass->enumtype) {
 317                         type = mono_class_enum_basetype (type->data.klass);
 318                         goto handle_enum;
 319                 }
 320                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 321                         return OP_XMOVE;
 322                 return OP_VMOVE;
 323         case MONO_TYPE_TYPEDBYREF:
 324                 return OP_VMOVE;
 325         case MONO_TYPE_GENERICINST:
 326                 type = &type->data.generic_class->container_class->byval_arg;
 327                 goto handle_enum;
 328         case MONO_TYPE_VAR:
 329         case MONO_TYPE_MVAR:
 330                 g_assert (cfg->generic_sharing_context);
 331                 if (mini_type_var_is_vt (cfg, type))
 332                         return OP_VMOVE;
 333                 else
 334                         return OP_MOVE;
 335         default:
 336                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 337         }
 338         return -1;
 339 }
 340
 341 void
 342 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 343 {
 344         int i;
 345         MonoInst *tree;
 346
 347         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 348         for (i = 0; i < bb->in_count; ++i)
 349                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 350         printf (", OUT: ");
 351         for (i = 0; i < bb->out_count; ++i)
 352                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 353         printf (" ]\n");
 354         for (tree = bb->code; tree; tree = tree->next)
 355                 mono_print_ins_index (-1, tree);
 356 }
 357
 358 void
 359 mono_create_helper_signatures (void)
 360 {
 361         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 362         helper_sig_class_init_trampoline = mono_create_icall_signature ("void");
 363         helper_sig_generic_class_init_trampoline = mono_create_icall_signature ("void");
 364         helper_sig_generic_class_init_trampoline_llvm = mono_create_icall_signature ("void ptr");
 365         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 366         helper_sig_monitor_enter_exit_trampoline = mono_create_icall_signature ("void");
 367         helper_sig_monitor_enter_exit_trampoline_llvm = mono_create_icall_signature ("void object");
 368         helper_sig_monitor_enter_v4_trampoline_llvm = mono_create_icall_signature ("void object ptr");
 369 }
 370
 371 static MONO_NEVER_INLINE void
 372 break_on_unverified (void)
 373 {
 374         if (mini_get_debug_options ()->break_on_unverified)
 375                 G_BREAKPOINT ();
 376 }
 377
 378 static MONO_NEVER_INLINE void
 379 method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
 380 {
 381         char *method_fname = mono_method_full_name (method, TRUE);
 382         char *cil_method_fname = mono_method_full_name (cil_method, TRUE);
 383         mono_cfg_set_exception (cfg, MONO_EXCEPTION_METHOD_ACCESS);
 384         cfg->exception_message = g_strdup_printf ("Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname);
 385         g_free (method_fname);
 386         g_free (cil_method_fname);
 387 }
 388
 389 static MONO_NEVER_INLINE void
 390 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 391 {
 392         char *method_fname = mono_method_full_name (method, TRUE);
 393         char *field_fname = mono_field_full_name (field);
 394         mono_cfg_set_exception (cfg, MONO_EXCEPTION_FIELD_ACCESS);
 395         cfg->exception_message = g_strdup_printf ("Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 396         g_free (method_fname);
 397         g_free (field_fname);
 398 }
 399
 400 static MONO_NEVER_INLINE void
 401 inline_failure (MonoCompile *cfg, const char *msg)
 402 {
 403         if (cfg->verbose_level >= 2)
 404                 printf ("inline failed: %s\n", msg);
 405         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 406 }
 407
 408 static MONO_NEVER_INLINE void
 409 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 410 {
 411         if (cfg->verbose_level > 2)                                                                                     \
 412                 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__);
 413         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 414 }
 415
 416 static MONO_NEVER_INLINE void
 417 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 418 {
 419         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);
 420         if (cfg->verbose_level >= 2)
 421                 printf ("%s\n", cfg->exception_message);
 422         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 423 }
 424
 425 /*
 426  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 427  * foo<T> (int i) { ldarg.0; box T; }
 428  */
 429 #define UNVERIFIED do { \
 430         if (cfg->gsharedvt) { \
 431                 if (cfg->verbose_level > 2)                                                                     \
 432                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 433                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 434                 goto exception_exit;                                                                                    \
 435         }                                                                                                                                       \
 436         break_on_unverified ();                                                                                         \
 437         goto unverified;                                                                                                        \
 438 } while (0)
 439
 440 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 441                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 442                 if (!(tblock)) {        \
 443                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 444             NEW_BBLOCK (cfg, (tblock)); \
 445                         (tblock)->cil_code = (ip);      \
 446                         ADD_BBLOCK (cfg, (tblock));     \
 447                 } \
 448         } while (0)
 449
 450 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 451 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 452                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 453                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 454                 (dest)->sreg1 = (sr1); \
 455                 (dest)->sreg2 = (sr2); \
 456                 (dest)->inst_imm = (imm); \
 457                 (dest)->backend.shift_amount = (shift); \
 458                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 459         } while (0)
 460 #endif
 461
 462 /* Emit conversions so both operands of a binary opcode are of the same type */
 463 static void
 464 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 465 {
 466         MonoInst *arg1 = *arg1_ref;
 467         MonoInst *arg2 = *arg2_ref;
 468
 469         if (cfg->r4fp &&
 470                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 471                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 472                 MonoInst *conv;
 473
 474                 /* Mixing r4/r8 is allowed by the spec */
 475                 if (arg1->type == STACK_R4) {
 476                         int dreg = alloc_freg (cfg);
 477
 478                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 479                         conv->type = STACK_R8;
 480                         ins->sreg1 = dreg;
 481                         *arg1_ref = conv;
 482                 }
 483                 if (arg2->type == STACK_R4) {
 484                         int dreg = alloc_freg (cfg);
 485
 486                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 487                         conv->type = STACK_R8;
 488                         ins->sreg2 = dreg;
 489                         *arg2_ref = conv;
 490                 }
 491         }
 492
 493 #if SIZEOF_REGISTER == 8
 494         /* FIXME: Need to add many more cases */
 495         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 496                 MonoInst *widen;
 497
 498                 int dr = alloc_preg (cfg);
 499                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 500                 (ins)->sreg2 = widen->dreg;
 501         }
 502 #endif
 503 }
 504
 505 #define ADD_BINOP(op) do {      \
 506                 MONO_INST_NEW (cfg, ins, (op)); \
 507                 sp -= 2;        \
 508                 ins->sreg1 = sp [0]->dreg;      \
 509                 ins->sreg2 = sp [1]->dreg;      \
 510                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 511                 CHECK_TYPE (ins);       \
 512                 /* Have to insert a widening op */               \
 513         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 514         ins->dreg = alloc_dreg ((cfg), (ins)->type); \
 515         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 516         *sp++ = mono_decompose_opcode ((cfg), (ins)); \
 517         } while (0)
 518
 519 #define ADD_UNOP(op) do {       \
 520                 MONO_INST_NEW (cfg, ins, (op)); \
 521                 sp--;   \
 522                 ins->sreg1 = sp [0]->dreg;      \
 523                 type_from_op (cfg, ins, sp [0], NULL);  \
 524                 CHECK_TYPE (ins);       \
 525         (ins)->dreg = alloc_dreg ((cfg), (ins)->type); \
 526         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 527                 *sp++ = mono_decompose_opcode (cfg, ins); \
 528         } while (0)
 529
 530 #define ADD_BINCOND(next_block) do {    \
 531                 MonoInst *cmp;  \
 532                 sp -= 2; \
 533                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 534                 cmp->sreg1 = sp [0]->dreg;      \
 535                 cmp->sreg2 = sp [1]->dreg;      \
 536                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 537                 CHECK_TYPE (cmp);       \
 538                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 539                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 540                 ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);      \
 541                 GET_BBLOCK (cfg, tblock, target);               \
 542                 link_bblock (cfg, bblock, tblock);      \
 543                 ins->inst_true_bb = tblock;     \
 544                 if ((next_block)) {     \
 545                         link_bblock (cfg, bblock, (next_block));        \
 546                         ins->inst_false_bb = (next_block);      \
 547                         start_new_bblock = 1;   \
 548                 } else {        \
 549                         GET_BBLOCK (cfg, tblock, ip);           \
 550                         link_bblock (cfg, bblock, tblock);      \
 551                         ins->inst_false_bb = tblock;    \
 552                         start_new_bblock = 2;   \
 553                 }       \
 554                 if (sp != stack_start) {                                                                        \
 555                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 556                         CHECK_UNVERIFIABLE (cfg); \
 557                 } \
 558         MONO_ADD_INS (bblock, cmp); \
 559                 MONO_ADD_INS (bblock, ins);     \
 560         } while (0)
 561
 562 /* *
 563  * link_bblock: Links two basic blocks
 564  *
 565  * links two basic blocks in the control flow graph, the 'from'
 566  * argument is the starting block and the 'to' argument is the block
 567  * the control flow ends to after 'from'.
 568  */
 569 static void
 570 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 571 {
 572         MonoBasicBlock **newa;
 573         int i, found;
 574
 575 #if 0
 576         if (from->cil_code) {
 577                 if (to->cil_code)
 578                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 579                 else
 580                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 581         } else {
 582                 if (to->cil_code)
 583                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 584                 else
 585                         printf ("edge from entry to exit\n");
 586         }
 587 #endif
 588
 589         found = FALSE;
 590         for (i = 0; i < from->out_count; ++i) {
 591                 if (to == from->out_bb [i]) {
 592                         found = TRUE;
 593                         break;
 594                 }
 595         }
 596         if (!found) {
 597                 newa = mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 598                 for (i = 0; i < from->out_count; ++i) {
 599                         newa [i] = from->out_bb [i];
 600                 }
 601                 newa [i] = to;
 602                 from->out_count++;
 603                 from->out_bb = newa;
 604         }
 605
 606         found = FALSE;
 607         for (i = 0; i < to->in_count; ++i) {
 608                 if (from == to->in_bb [i]) {
 609                         found = TRUE;
 610                         break;
 611                 }
 612         }
 613         if (!found) {
 614                 newa = mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 615                 for (i = 0; i < to->in_count; ++i) {
 616                         newa [i] = to->in_bb [i];
 617                 }
 618                 newa [i] = from;
 619                 to->in_count++;
 620                 to->in_bb = newa;
 621         }
 622 }
 623
 624 void
 625 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 626 {
 627         link_bblock (cfg, from, to);
 628 }
 629
 630 /**
 631  * mono_find_block_region:
 632  *
 633  *   We mark each basic block with a region ID. We use that to avoid BB
 634  *   optimizations when blocks are in different regions.
 635  *
 636  * Returns:
 637  *   A region token that encodes where this region is, and information
 638  *   about the clause owner for this block.
 639  *
 640  *   The region encodes the try/catch/filter clause that owns this block
 641  *   as well as the type.  -1 is a special value that represents a block
 642  *   that is in none of try/catch/filter.
 643  */
 644 static int
 645 mono_find_block_region (MonoCompile *cfg, int offset)
 646 {
 647         MonoMethodHeader *header = cfg->header;
 648         MonoExceptionClause *clause;
 649         int i;
 650
 651         for (i = 0; i < header->num_clauses; ++i) {
 652                 clause = &header->clauses [i];
 653                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 654                     (offset < (clause->handler_offset)))
 655                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 656
 657                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 658                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 659                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 660                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 661                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 662                         else
 663                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 664                 }
 665
 666                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 667                         return ((i + 1) << 8) | clause->flags;
 668         }
 669
 670         return -1;
 671 }
 672
 673 static GList*
 674 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 675 {
 676         MonoMethodHeader *header = cfg->header;
 677         MonoExceptionClause *clause;
 678         int i;
 679         GList *res = NULL;
 680
 681         for (i = 0; i < header->num_clauses; ++i) {
 682                 clause = &header->clauses [i];
 683                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 684                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 685                         if (clause->flags == type)
 686                                 res = g_list_append (res, clause);
 687                 }
 688         }
 689         return res;
 690 }
 691
 692 static void
 693 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 694 {
 695         MonoInst *var;
 696
 697         var = g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 698         if (var)
 699                 return;
 700
 701         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 702         /* prevent it from being register allocated */
 703         var->flags |= MONO_INST_VOLATILE;
 704
 705         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 706 }
 707
 708 MonoInst *
 709 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 710 {
 711         return g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 712 }
 713
 714 static MonoInst*
 715 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 716 {
 717         MonoInst *var;
 718
 719         var = g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 720         if (var)
 721                 return var;
 722
 723         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 724         /* prevent it from being register allocated */
 725         var->flags |= MONO_INST_VOLATILE;
 726
 727         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 728
 729         return var;
 730 }
 731
 732 /*
 733  * Returns the type used in the eval stack when @type is loaded.
 734  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 735  */
 736 void
 737 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 738 {
 739         MonoClass *klass;
 740
 741         type = mini_replace_type (type);
 742         inst->klass = klass = mono_class_from_mono_type (type);
 743         if (type->byref) {
 744                 inst->type = STACK_MP;
 745                 return;
 746         }
 747
 748 handle_enum:
 749         switch (type->type) {
 750         case MONO_TYPE_VOID:
 751                 inst->type = STACK_INV;
 752                 return;
 753         case MONO_TYPE_I1:
 754         case MONO_TYPE_U1:
 755         case MONO_TYPE_BOOLEAN:
 756         case MONO_TYPE_I2:
 757         case MONO_TYPE_U2:
 758         case MONO_TYPE_CHAR:
 759         case MONO_TYPE_I4:
 760         case MONO_TYPE_U4:
 761                 inst->type = STACK_I4;
 762                 return;
 763         case MONO_TYPE_I:
 764         case MONO_TYPE_U:
 765         case MONO_TYPE_PTR:
 766         case MONO_TYPE_FNPTR:
 767                 inst->type = STACK_PTR;
 768                 return;
 769         case MONO_TYPE_CLASS:
 770         case MONO_TYPE_STRING:
 771         case MONO_TYPE_OBJECT:
 772         case MONO_TYPE_SZARRAY:
 773         case MONO_TYPE_ARRAY:
 774                 inst->type = STACK_OBJ;
 775                 return;
 776         case MONO_TYPE_I8:
 777         case MONO_TYPE_U8:
 778                 inst->type = STACK_I8;
 779                 return;
 780         case MONO_TYPE_R4:
 781                 inst->type = cfg->r4_stack_type;
 782                 break;
 783         case MONO_TYPE_R8:
 784                 inst->type = STACK_R8;
 785                 return;
 786         case MONO_TYPE_VALUETYPE:
 787                 if (type->data.klass->enumtype) {
 788                         type = mono_class_enum_basetype (type->data.klass);
 789                         goto handle_enum;
 790                 } else {
 791                         inst->klass = klass;
 792                         inst->type = STACK_VTYPE;
 793                         return;
 794                 }
 795         case MONO_TYPE_TYPEDBYREF:
 796                 inst->klass = mono_defaults.typed_reference_class;
 797                 inst->type = STACK_VTYPE;
 798                 return;
 799         case MONO_TYPE_GENERICINST:
 800                 type = &type->data.generic_class->container_class->byval_arg;
 801                 goto handle_enum;
 802         case MONO_TYPE_VAR:
 803         case MONO_TYPE_MVAR:
 804                 g_assert (cfg->generic_sharing_context);
 805                 if (mini_is_gsharedvt_type (cfg, type)) {
 806                         g_assert (cfg->gsharedvt);
 807                         inst->type = STACK_VTYPE;
 808                 } else {
 809                         inst->type = STACK_OBJ;
 810                 }
 811                 return;
 812         default:
 813                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 814         }
 815 }
 816
 817 /*
 818  * The following tables are used to quickly validate the IL code in type_from_op ().
 819  */
 820 static const char
 821 bin_num_table [STACK_MAX] [STACK_MAX] = {
 822         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 823         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 824         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 825         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 826         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 827         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 828         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 829         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 830         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 831 };
 832
 833 static const char
 834 neg_table [] = {
 835         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 836 };
 837
 838 /* reduce the size of this table */
 839 static const char
 840 bin_int_table [STACK_MAX] [STACK_MAX] = {
 841         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 842         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 843         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 844         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 845         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 846         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 847         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, 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 };
 850
 851 static const char
 852 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 853 /*      Inv i  L  p  F  &  O  vt r4 */
 854         {0},
 855         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 856         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 857         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 858         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 859         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 860         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 861         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 862         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 863 };
 864
 865 /* reduce the size of this table */
 866 static const char
 867 shift_table [STACK_MAX] [STACK_MAX] = {
 868         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 869         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 870         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 871         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 872         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 873         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 874         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, 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 };
 877
 878 /*
 879  * Tables to map from the non-specific opcode to the matching
 880  * type-specific opcode.
 881  */
 882 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 883 static const guint16
 884 binops_op_map [STACK_MAX] = {
 885         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
 886 };
 887
 888 /* handles from CEE_NEG to CEE_CONV_U8 */
 889 static const guint16
 890 unops_op_map [STACK_MAX] = {
 891         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
 892 };
 893
 894 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 895 static const guint16
 896 ovfops_op_map [STACK_MAX] = {
 897         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
 898 };
 899
 900 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 901 static const guint16
 902 ovf2ops_op_map [STACK_MAX] = {
 903         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
 904 };
 905
 906 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 907 static const guint16
 908 ovf3ops_op_map [STACK_MAX] = {
 909         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
 910 };
 911
 912 /* handles from CEE_BEQ to CEE_BLT_UN */
 913 static const guint16
 914 beqops_op_map [STACK_MAX] = {
 915         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
 916 };
 917
 918 /* handles from CEE_CEQ to CEE_CLT_UN */
 919 static const guint16
 920 ceqops_op_map [STACK_MAX] = {
 921         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
 922 };
 923
 924 /*
 925  * Sets ins->type (the type on the eval stack) according to the
 926  * type of the opcode and the arguments to it.
 927  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 928  *
 929  * FIXME: this function sets ins->type unconditionally in some cases, but
 930  * it should set it to invalid for some types (a conv.x on an object)
 931  */
 932 static void
 933 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 934 {
 935         switch (ins->opcode) {
 936         /* binops */
 937         case CEE_ADD:
 938         case CEE_SUB:
 939         case CEE_MUL:
 940         case CEE_DIV:
 941         case CEE_REM:
 942                 /* FIXME: check unverifiable args for STACK_MP */
 943                 ins->type = bin_num_table [src1->type] [src2->type];
 944                 ins->opcode += binops_op_map [ins->type];
 945                 break;
 946         case CEE_DIV_UN:
 947         case CEE_REM_UN:
 948         case CEE_AND:
 949         case CEE_OR:
 950         case CEE_XOR:
 951                 ins->type = bin_int_table [src1->type] [src2->type];
 952                 ins->opcode += binops_op_map [ins->type];
 953                 break;
 954         case CEE_SHL:
 955         case CEE_SHR:
 956         case CEE_SHR_UN:
 957                 ins->type = shift_table [src1->type] [src2->type];
 958                 ins->opcode += binops_op_map [ins->type];
 959                 break;
 960         case OP_COMPARE:
 961         case OP_LCOMPARE:
 962         case OP_ICOMPARE:
 963                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 964                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 965                         ins->opcode = OP_LCOMPARE;
 966                 else if (src1->type == STACK_R4)
 967                         ins->opcode = OP_RCOMPARE;
 968                 else if (src1->type == STACK_R8)
 969                         ins->opcode = OP_FCOMPARE;
 970                 else
 971                         ins->opcode = OP_ICOMPARE;
 972                 break;
 973         case OP_ICOMPARE_IMM:
 974                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 975                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 976                         ins->opcode = OP_LCOMPARE_IMM;
 977                 break;
 978         case CEE_BEQ:
 979         case CEE_BGE:
 980         case CEE_BGT:
 981         case CEE_BLE:
 982         case CEE_BLT:
 983         case CEE_BNE_UN:
 984         case CEE_BGE_UN:
 985         case CEE_BGT_UN:
 986         case CEE_BLE_UN:
 987         case CEE_BLT_UN:
 988                 ins->opcode += beqops_op_map [src1->type];
 989                 break;
 990         case OP_CEQ:
 991                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 992                 ins->opcode += ceqops_op_map [src1->type];
 993                 break;
 994         case OP_CGT:
 995         case OP_CGT_UN:
 996         case OP_CLT:
 997         case OP_CLT_UN:
 998                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
 999                 ins->opcode += ceqops_op_map [src1->type];
1000                 break;
1001         /* unops */
1002         case CEE_NEG:
1003                 ins->type = neg_table [src1->type];
1004                 ins->opcode += unops_op_map [ins->type];
1005                 break;
1006         case CEE_NOT:
1007                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1008                         ins->type = src1->type;
1009                 else
1010                         ins->type = STACK_INV;
1011                 ins->opcode += unops_op_map [ins->type];
1012                 break;
1013         case CEE_CONV_I1:
1014         case CEE_CONV_I2:
1015         case CEE_CONV_I4:
1016         case CEE_CONV_U4:
1017                 ins->type = STACK_I4;
1018                 ins->opcode += unops_op_map [src1->type];
1019                 break;
1020         case CEE_CONV_R_UN:
1021                 ins->type = STACK_R8;
1022                 switch (src1->type) {
1023                 case STACK_I4:
1024                 case STACK_PTR:
1025                         ins->opcode = OP_ICONV_TO_R_UN;
1026                         break;
1027                 case STACK_I8:
1028                         ins->opcode = OP_LCONV_TO_R_UN;
1029                         break;
1030                 }
1031                 break;
1032         case CEE_CONV_OVF_I1:
1033         case CEE_CONV_OVF_U1:
1034         case CEE_CONV_OVF_I2:
1035         case CEE_CONV_OVF_U2:
1036         case CEE_CONV_OVF_I4:
1037         case CEE_CONV_OVF_U4:
1038                 ins->type = STACK_I4;
1039                 ins->opcode += ovf3ops_op_map [src1->type];
1040                 break;
1041         case CEE_CONV_OVF_I_UN:
1042         case CEE_CONV_OVF_U_UN:
1043                 ins->type = STACK_PTR;
1044                 ins->opcode += ovf2ops_op_map [src1->type];
1045                 break;
1046         case CEE_CONV_OVF_I1_UN:
1047         case CEE_CONV_OVF_I2_UN:
1048         case CEE_CONV_OVF_I4_UN:
1049         case CEE_CONV_OVF_U1_UN:
1050         case CEE_CONV_OVF_U2_UN:
1051         case CEE_CONV_OVF_U4_UN:
1052                 ins->type = STACK_I4;
1053                 ins->opcode += ovf2ops_op_map [src1->type];
1054                 break;
1055         case CEE_CONV_U:
1056                 ins->type = STACK_PTR;
1057                 switch (src1->type) {
1058                 case STACK_I4:
1059                         ins->opcode = OP_ICONV_TO_U;
1060                         break;
1061                 case STACK_PTR:
1062                 case STACK_MP:
1063 #if SIZEOF_VOID_P == 8
1064                         ins->opcode = OP_LCONV_TO_U;
1065 #else
1066                         ins->opcode = OP_MOVE;
1067 #endif
1068                         break;
1069                 case STACK_I8:
1070                         ins->opcode = OP_LCONV_TO_U;
1071                         break;
1072                 case STACK_R8:
1073                         ins->opcode = OP_FCONV_TO_U;
1074                         break;
1075                 }
1076                 break;
1077         case CEE_CONV_I8:
1078         case CEE_CONV_U8:
1079                 ins->type = STACK_I8;
1080                 ins->opcode += unops_op_map [src1->type];
1081                 break;
1082         case CEE_CONV_OVF_I8:
1083         case CEE_CONV_OVF_U8:
1084                 ins->type = STACK_I8;
1085                 ins->opcode += ovf3ops_op_map [src1->type];
1086                 break;
1087         case CEE_CONV_OVF_U8_UN:
1088         case CEE_CONV_OVF_I8_UN:
1089                 ins->type = STACK_I8;
1090                 ins->opcode += ovf2ops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_R4:
1093                 ins->type = cfg->r4_stack_type;
1094                 ins->opcode += unops_op_map [src1->type];
1095                 break;
1096         case CEE_CONV_R8:
1097                 ins->type = STACK_R8;
1098                 ins->opcode += unops_op_map [src1->type];
1099                 break;
1100         case OP_CKFINITE:
1101                 ins->type = STACK_R8;
1102                 break;
1103         case CEE_CONV_U2:
1104         case CEE_CONV_U1:
1105                 ins->type = STACK_I4;
1106                 ins->opcode += ovfops_op_map [src1->type];
1107                 break;
1108         case CEE_CONV_I:
1109         case CEE_CONV_OVF_I:
1110         case CEE_CONV_OVF_U:
1111                 ins->type = STACK_PTR;
1112                 ins->opcode += ovfops_op_map [src1->type];
1113                 break;
1114         case CEE_ADD_OVF:
1115         case CEE_ADD_OVF_UN:
1116         case CEE_MUL_OVF:
1117         case CEE_MUL_OVF_UN:
1118         case CEE_SUB_OVF:
1119         case CEE_SUB_OVF_UN:
1120                 ins->type = bin_num_table [src1->type] [src2->type];
1121                 ins->opcode += ovfops_op_map [src1->type];
1122                 if (ins->type == STACK_R8)
1123                         ins->type = STACK_INV;
1124                 break;
1125         case OP_LOAD_MEMBASE:
1126                 ins->type = STACK_PTR;
1127                 break;
1128         case OP_LOADI1_MEMBASE:
1129         case OP_LOADU1_MEMBASE:
1130         case OP_LOADI2_MEMBASE:
1131         case OP_LOADU2_MEMBASE:
1132         case OP_LOADI4_MEMBASE:
1133         case OP_LOADU4_MEMBASE:
1134                 ins->type = STACK_PTR;
1135                 break;
1136         case OP_LOADI8_MEMBASE:
1137                 ins->type = STACK_I8;
1138                 break;
1139         case OP_LOADR4_MEMBASE:
1140                 ins->type = cfg->r4_stack_type;
1141                 break;
1142         case OP_LOADR8_MEMBASE:
1143                 ins->type = STACK_R8;
1144                 break;
1145         default:
1146                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1147                 break;
1148         }
1149
1150         if (ins->type == STACK_MP)
1151                 ins->klass = mono_defaults.object_class;
1152 }
1153
1154 static const char
1155 ldind_type [] = {
1156         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1157 };
1158
1159 #if 0
1160
1161 static const char
1162 param_table [STACK_MAX] [STACK_MAX] = {
1163         {0},
1164 };
1165
1166 static int
1167 check_values_to_signature (MonoInst *args, MonoType *this, MonoMethodSignature *sig) {
1168         int i;
1169
1170         if (sig->hasthis) {
1171                 switch (args->type) {
1172                 case STACK_I4:
1173                 case STACK_I8:
1174                 case STACK_R8:
1175                 case STACK_VTYPE:
1176                 case STACK_INV:
1177                         return 0;
1178                 }
1179                 args++;
1180         }
1181         for (i = 0; i < sig->param_count; ++i) {
1182                 switch (args [i].type) {
1183                 case STACK_INV:
1184                         return 0;
1185                 case STACK_MP:
1186                         if (!sig->params [i]->byref)
1187                                 return 0;
1188                         continue;
1189                 case STACK_OBJ:
1190                         if (sig->params [i]->byref)
1191                                 return 0;
1192                         switch (sig->params [i]->type) {
1193                         case MONO_TYPE_CLASS:
1194                         case MONO_TYPE_STRING:
1195                         case MONO_TYPE_OBJECT:
1196                         case MONO_TYPE_SZARRAY:
1197                         case MONO_TYPE_ARRAY:
1198                                 break;
1199                         default:
1200                                 return 0;
1201                         }
1202                         continue;
1203                 case STACK_R8:
1204                         if (sig->params [i]->byref)
1205                                 return 0;
1206                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1207                                 return 0;
1208                         continue;
1209                 case STACK_PTR:
1210                 case STACK_I4:
1211                 case STACK_I8:
1212                 case STACK_VTYPE:
1213                         break;
1214                 }
1215                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1216                         return 0;*/
1217         }
1218         return 1;
1219 }
1220 #endif
1221
1222 /*
1223  * When we need a pointer to the current domain many times in a method, we
1224  * call mono_domain_get() once and we store the result in a local variable.
1225  * This function returns the variable that represents the MonoDomain*.
1226  */
1227 inline static MonoInst *
1228 mono_get_domainvar (MonoCompile *cfg)
1229 {
1230         if (!cfg->domainvar)
1231                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1232         return cfg->domainvar;
1233 }
1234
1235 /*
1236  * The got_var contains the address of the Global Offset Table when AOT
1237  * compiling.
1238  */
1239 MonoInst *
1240 mono_get_got_var (MonoCompile *cfg)
1241 {
1242 #ifdef MONO_ARCH_NEED_GOT_VAR
1243         if (!cfg->compile_aot)
1244                 return NULL;
1245         if (!cfg->got_var) {
1246                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1247         }
1248         return cfg->got_var;
1249 #else
1250         return NULL;
1251 #endif
1252 }
1253
1254 static MonoInst *
1255 mono_get_vtable_var (MonoCompile *cfg)
1256 {
1257         g_assert (cfg->generic_sharing_context);
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_BOOLEAN:
1294         case MONO_TYPE_I2:
1295         case MONO_TYPE_U2:
1296         case MONO_TYPE_CHAR:
1297         case MONO_TYPE_I4:
1298         case MONO_TYPE_U4:
1299                 return STACK_I4;
1300         case MONO_TYPE_I:
1301         case MONO_TYPE_U:
1302         case MONO_TYPE_PTR:
1303         case MONO_TYPE_FNPTR:
1304                 return STACK_PTR;
1305         case MONO_TYPE_CLASS:
1306         case MONO_TYPE_STRING:
1307         case MONO_TYPE_OBJECT:
1308         case MONO_TYPE_SZARRAY:
1309         case MONO_TYPE_ARRAY:
1310                 return STACK_OBJ;
1311         case MONO_TYPE_I8:
1312         case MONO_TYPE_U8:
1313                 return STACK_I8;
1314         case MONO_TYPE_R4:
1315                 return cfg->r4_stack_type;
1316         case MONO_TYPE_R8:
1317                 return STACK_R8;
1318         case MONO_TYPE_VALUETYPE:
1319         case MONO_TYPE_TYPEDBYREF:
1320                 return STACK_VTYPE;
1321         case MONO_TYPE_GENERICINST:
1322                 if (mono_type_generic_inst_is_valuetype (t))
1323                         return STACK_VTYPE;
1324                 else
1325                         return STACK_OBJ;
1326                 break;
1327         default:
1328                 g_assert_not_reached ();
1329         }
1330
1331         return -1;
1332 }
1333
1334 static MonoClass*
1335 array_access_to_klass (int opcode)
1336 {
1337         switch (opcode) {
1338         case CEE_LDELEM_U1:
1339                 return mono_defaults.byte_class;
1340         case CEE_LDELEM_U2:
1341                 return mono_defaults.uint16_class;
1342         case CEE_LDELEM_I:
1343         case CEE_STELEM_I:
1344                 return mono_defaults.int_class;
1345         case CEE_LDELEM_I1:
1346         case CEE_STELEM_I1:
1347                 return mono_defaults.sbyte_class;
1348         case CEE_LDELEM_I2:
1349         case CEE_STELEM_I2:
1350                 return mono_defaults.int16_class;
1351         case CEE_LDELEM_I4:
1352         case CEE_STELEM_I4:
1353                 return mono_defaults.int32_class;
1354         case CEE_LDELEM_U4:
1355                 return mono_defaults.uint32_class;
1356         case CEE_LDELEM_I8:
1357         case CEE_STELEM_I8:
1358                 return mono_defaults.int64_class;
1359         case CEE_LDELEM_R4:
1360         case CEE_STELEM_R4:
1361                 return mono_defaults.single_class;
1362         case CEE_LDELEM_R8:
1363         case CEE_STELEM_R8:
1364                 return mono_defaults.double_class;
1365         case CEE_LDELEM_REF:
1366         case CEE_STELEM_REF:
1367                 return mono_defaults.object_class;
1368         default:
1369                 g_assert_not_reached ();
1370         }
1371         return NULL;
1372 }
1373
1374 /*
1375  * We try to share variables when possible
1376  */
1377 static MonoInst *
1378 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1379 {
1380         MonoInst *res;
1381         int pos, vnum;
1382
1383         /* inlining can result in deeper stacks */
1384         if (slot >= cfg->header->max_stack)
1385                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1386
1387         pos = ins->type - 1 + slot * STACK_MAX;
1388
1389         switch (ins->type) {
1390         case STACK_I4:
1391         case STACK_I8:
1392         case STACK_R8:
1393         case STACK_PTR:
1394         case STACK_MP:
1395         case STACK_OBJ:
1396                 if ((vnum = cfg->intvars [pos]))
1397                         return cfg->varinfo [vnum];
1398                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1399                 cfg->intvars [pos] = res->inst_c0;
1400                 break;
1401         default:
1402                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1403         }
1404         return res;
1405 }
1406
1407 static void
1408 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1409 {
1410         /*
1411          * Don't use this if a generic_context is set, since that means AOT can't
1412          * look up the method using just the image+token.
1413          * table == 0 means this is a reference made from a wrapper.
1414          */
1415         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1416                 MonoJumpInfoToken *jump_info_token = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1417                 jump_info_token->image = image;
1418                 jump_info_token->token = token;
1419                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1420         }
1421 }
1422
1423 /*
1424  * This function is called to handle items that are left on the evaluation stack
1425  * at basic block boundaries. What happens is that we save the values to local variables
1426  * and we reload them later when first entering the target basic block (with the
1427  * handle_loaded_temps () function).
1428  * A single joint point will use the same variables (stored in the array bb->out_stack or
1429  * bb->in_stack, if the basic block is before or after the joint point).
1430  *
1431  * This function needs to be called _before_ emitting the last instruction of
1432  * the bb (i.e. before emitting a branch).
1433  * If the stack merge fails at a join point, cfg->unverifiable is set.
1434  */
1435 static void
1436 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1437 {
1438         int i, bindex;
1439         MonoBasicBlock *bb = cfg->cbb;
1440         MonoBasicBlock *outb;
1441         MonoInst *inst, **locals;
1442         gboolean found;
1443
1444         if (!count)
1445                 return;
1446         if (cfg->verbose_level > 3)
1447                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1448         if (!bb->out_scount) {
1449                 bb->out_scount = count;
1450                 //printf ("bblock %d has out:", bb->block_num);
1451                 found = FALSE;
1452                 for (i = 0; i < bb->out_count; ++i) {
1453                         outb = bb->out_bb [i];
1454                         /* exception handlers are linked, but they should not be considered for stack args */
1455                         if (outb->flags & BB_EXCEPTION_HANDLER)
1456                                 continue;
1457                         //printf (" %d", outb->block_num);
1458                         if (outb->in_stack) {
1459                                 found = TRUE;
1460                                 bb->out_stack = outb->in_stack;
1461                                 break;
1462                         }
1463                 }
1464                 //printf ("\n");
1465                 if (!found) {
1466                         bb->out_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1467                         for (i = 0; i < count; ++i) {
1468                                 /*
1469                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1470                                  * stack slot and if they are of the same type.
1471                                  * This won't cause conflicts since if 'local' is used to
1472                                  * store one of the values in the in_stack of a bblock, then
1473                                  * the same variable will be used for the same outgoing stack
1474                                  * slot as well.
1475                                  * This doesn't work when inlining methods, since the bblocks
1476                                  * in the inlined methods do not inherit their in_stack from
1477                                  * the bblock they are inlined to. See bug #58863 for an
1478                                  * example.
1479                                  */
1480                                 if (cfg->inlined_method)
1481                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1482                                 else
1483                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1484                         }
1485                 }
1486         }
1487
1488         for (i = 0; i < bb->out_count; ++i) {
1489                 outb = bb->out_bb [i];
1490                 /* exception handlers are linked, but they should not be considered for stack args */
1491                 if (outb->flags & BB_EXCEPTION_HANDLER)
1492                         continue;
1493                 if (outb->in_scount) {
1494                         if (outb->in_scount != bb->out_scount) {
1495                                 cfg->unverifiable = TRUE;
1496                                 return;
1497                         }
1498                         continue; /* check they are the same locals */
1499                 }
1500                 outb->in_scount = count;
1501                 outb->in_stack = bb->out_stack;
1502         }
1503
1504         locals = bb->out_stack;
1505         cfg->cbb = bb;
1506         for (i = 0; i < count; ++i) {
1507                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1508                 inst->cil_code = sp [i]->cil_code;
1509                 sp [i] = locals [i];
1510                 if (cfg->verbose_level > 3)
1511                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1512         }
1513
1514         /*
1515          * It is possible that the out bblocks already have in_stack assigned, and
1516          * the in_stacks differ. In this case, we will store to all the different
1517          * in_stacks.
1518          */
1519
1520         found = TRUE;
1521         bindex = 0;
1522         while (found) {
1523                 /* Find a bblock which has a different in_stack */
1524                 found = FALSE;
1525                 while (bindex < bb->out_count) {
1526                         outb = bb->out_bb [bindex];
1527                         /* exception handlers are linked, but they should not be considered for stack args */
1528                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1529                                 bindex++;
1530                                 continue;
1531                         }
1532                         if (outb->in_stack != locals) {
1533                                 for (i = 0; i < count; ++i) {
1534                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1535                                         inst->cil_code = sp [i]->cil_code;
1536                                         sp [i] = locals [i];
1537                                         if (cfg->verbose_level > 3)
1538                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1539                                 }
1540                                 locals = outb->in_stack;
1541                                 found = TRUE;
1542                                 break;
1543                         }
1544                         bindex ++;
1545                 }
1546         }
1547 }
1548
1549 /* Emit code which loads interface_offsets [klass->interface_id]
1550  * The array is stored in memory before vtable.
1551 */
1552 static void
1553 mini_emit_load_intf_reg_vtable (MonoCompile *cfg, int intf_reg, int vtable_reg, MonoClass *klass)
1554 {
1555         if (cfg->compile_aot) {
1556                 int ioffset_reg = alloc_preg (cfg);
1557                 int iid_reg = alloc_preg (cfg);
1558
1559                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_ADJUSTED_IID);
1560                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ioffset_reg, iid_reg, vtable_reg);
1561                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, intf_reg, ioffset_reg, 0);
1562         }
1563         else {
1564                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, intf_reg, vtable_reg, -((klass->interface_id + 1) * SIZEOF_VOID_P));
1565         }
1566 }
1567
1568 static void
1569 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1570 {
1571         int ibitmap_reg = alloc_preg (cfg);
1572 #ifdef COMPRESSED_INTERFACE_BITMAP
1573         MonoInst *args [2];
1574         MonoInst *res, *ins;
1575         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1576         MONO_ADD_INS (cfg->cbb, ins);
1577         args [0] = ins;
1578         if (cfg->compile_aot)
1579                 EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_IID, klass);
1580         else
1581                 EMIT_NEW_ICONST (cfg, args [1], klass->interface_id);
1582         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1583         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1584 #else
1585         int ibitmap_byte_reg = alloc_preg (cfg);
1586
1587         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1588
1589         if (cfg->compile_aot) {
1590                 int iid_reg = alloc_preg (cfg);
1591                 int shifted_iid_reg = alloc_preg (cfg);
1592                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1593                 int masked_iid_reg = alloc_preg (cfg);
1594                 int iid_one_bit_reg = alloc_preg (cfg);
1595                 int iid_bit_reg = alloc_preg (cfg);
1596                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1597                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1598                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1599                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1600                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1601                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1602                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1603                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1604         } else {
1605                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1606                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1607         }
1608 #endif
1609 }
1610
1611 /*
1612  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1613  * stored in "klass_reg" implements the interface "klass".
1614  */
1615 static void
1616 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1617 {
1618         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1619 }
1620
1621 /*
1622  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1623  * stored in "vtable_reg" implements the interface "klass".
1624  */
1625 static void
1626 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1627 {
1628         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1629 }
1630
1631 /*
1632  * Emit code which checks whenever the interface id of @klass is smaller than
1633  * than the value given by max_iid_reg.
1634 */
1635 static void
1636 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1637                                                  MonoBasicBlock *false_target)
1638 {
1639         if (cfg->compile_aot) {
1640                 int iid_reg = alloc_preg (cfg);
1641                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1642                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1643         }
1644         else
1645                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1646         if (false_target)
1647                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1648         else
1649                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1650 }
1651
1652 /* Same as above, but obtains max_iid from a vtable */
1653 static void
1654 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1655                                                                  MonoBasicBlock *false_target)
1656 {
1657         int max_iid_reg = alloc_preg (cfg);
1658
1659         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1660         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1661 }
1662
1663 /* Same as above, but obtains max_iid from a klass */
1664 static void
1665 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1666                                                                  MonoBasicBlock *false_target)
1667 {
1668         int max_iid_reg = alloc_preg (cfg);
1669
1670         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1671         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1672 }
1673
1674 static void
1675 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1676 {
1677         int idepth_reg = alloc_preg (cfg);
1678         int stypes_reg = alloc_preg (cfg);
1679         int stype = alloc_preg (cfg);
1680
1681         mono_class_setup_supertypes (klass);
1682
1683         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1684                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1685                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1686                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1687         }
1688         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1689         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1690         if (klass_ins) {
1691                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1692         } else if (cfg->compile_aot) {
1693                 int const_reg = alloc_preg (cfg);
1694                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1695                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1696         } else {
1697                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1698         }
1699         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1700 }
1701
1702 static void
1703 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1704 {
1705         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1706 }
1707
1708 static void
1709 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1710 {
1711         int intf_reg = alloc_preg (cfg);
1712
1713         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1714         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1715         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1716         if (true_target)
1717                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1718         else
1719                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1720 }
1721
1722 /*
1723  * Variant of the above that takes a register to the class, not the vtable.
1724  */
1725 static void
1726 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1727 {
1728         int intf_bit_reg = alloc_preg (cfg);
1729
1730         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1731         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1732         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1733         if (true_target)
1734                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1735         else
1736                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1737 }
1738
1739 static inline void
1740 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1741 {
1742         if (klass_inst) {
1743                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1744         } else if (cfg->compile_aot) {
1745                 int const_reg = alloc_preg (cfg);
1746                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1747                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1748         } else {
1749                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1750         }
1751         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1752 }
1753
1754 static inline void
1755 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1756 {
1757         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1758 }
1759
1760 static inline void
1761 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1762 {
1763         if (cfg->compile_aot) {
1764                 int const_reg = alloc_preg (cfg);
1765                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1766                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1767         } else {
1768                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1769         }
1770         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1771 }
1772
1773 static void
1774 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1775
1776 static void
1777 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1778 {
1779         if (klass->rank) {
1780                 int rank_reg = alloc_preg (cfg);
1781                 int eclass_reg = alloc_preg (cfg);
1782
1783                 g_assert (!klass_inst);
1784                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1785                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1786                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1787                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1788                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1789                 if (klass->cast_class == mono_defaults.object_class) {
1790                         int parent_reg = alloc_preg (cfg);
1791                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1792                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1793                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1794                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1795                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1796                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1797                 } else if (klass->cast_class == mono_defaults.enum_class) {
1798                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1799                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1800                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1801                 } else {
1802                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1803                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1804                 }
1805
1806                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1807                         /* Check that the object is a vector too */
1808                         int bounds_reg = alloc_preg (cfg);
1809                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1810                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1811                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1812                 }
1813         } else {
1814                 int idepth_reg = alloc_preg (cfg);
1815                 int stypes_reg = alloc_preg (cfg);
1816                 int stype = alloc_preg (cfg);
1817
1818                 mono_class_setup_supertypes (klass);
1819
1820                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1821                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1822                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1823                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1824                 }
1825                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1826                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1827                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1828         }
1829 }
1830
1831 static void
1832 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1833 {
1834         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1835 }
1836
1837 static void
1838 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1839 {
1840         int val_reg;
1841
1842         g_assert (val == 0);
1843
1844         if (align == 0)
1845                 align = 4;
1846
1847         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1848                 switch (size) {
1849                 case 1:
1850                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1851                         return;
1852                 case 2:
1853                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1854                         return;
1855                 case 4:
1856                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1857                         return;
1858 #if SIZEOF_REGISTER == 8
1859                 case 8:
1860                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1861                         return;
1862 #endif
1863                 }
1864         }
1865
1866         val_reg = alloc_preg (cfg);
1867
1868         if (SIZEOF_REGISTER == 8)
1869                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1870         else
1871                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1872
1873         if (align < 4) {
1874                 /* This could be optimized further if neccesary */
1875                 while (size >= 1) {
1876                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1877                         offset += 1;
1878                         size -= 1;
1879                 }
1880                 return;
1881         }
1882
1883 #if !NO_UNALIGNED_ACCESS
1884         if (SIZEOF_REGISTER == 8) {
1885                 if (offset % 8) {
1886                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1887                         offset += 4;
1888                         size -= 4;
1889                 }
1890                 while (size >= 8) {
1891                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1892                         offset += 8;
1893                         size -= 8;
1894                 }
1895         }
1896 #endif
1897
1898         while (size >= 4) {
1899                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1900                 offset += 4;
1901                 size -= 4;
1902         }
1903         while (size >= 2) {
1904                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1905                 offset += 2;
1906                 size -= 2;
1907         }
1908         while (size >= 1) {
1909                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1910                 offset += 1;
1911                 size -= 1;
1912         }
1913 }
1914
1915 void
1916 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1917 {
1918         int cur_reg;
1919
1920         if (align == 0)
1921                 align = 4;
1922
1923         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1924         g_assert (size < 10000);
1925
1926         if (align < 4) {
1927                 /* This could be optimized further if neccesary */
1928                 while (size >= 1) {
1929                         cur_reg = alloc_preg (cfg);
1930                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1931                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1932                         doffset += 1;
1933                         soffset += 1;
1934                         size -= 1;
1935                 }
1936         }
1937
1938 #if !NO_UNALIGNED_ACCESS
1939         if (SIZEOF_REGISTER == 8) {
1940                 while (size >= 8) {
1941                         cur_reg = alloc_preg (cfg);
1942                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1943                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1944                         doffset += 8;
1945                         soffset += 8;
1946                         size -= 8;
1947                 }
1948         }
1949 #endif
1950
1951         while (size >= 4) {
1952                 cur_reg = alloc_preg (cfg);
1953                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1954                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1955                 doffset += 4;
1956                 soffset += 4;
1957                 size -= 4;
1958         }
1959         while (size >= 2) {
1960                 cur_reg = alloc_preg (cfg);
1961                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1962                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1963                 doffset += 2;
1964                 soffset += 2;
1965                 size -= 2;
1966         }
1967         while (size >= 1) {
1968                 cur_reg = alloc_preg (cfg);
1969                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1970                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1971                 doffset += 1;
1972                 soffset += 1;
1973                 size -= 1;
1974         }
1975 }
1976
1977 static void
1978 emit_tls_set (MonoCompile *cfg, int sreg1, int tls_key)
1979 {
1980         MonoInst *ins, *c;
1981
1982         if (cfg->compile_aot) {
1983                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1984                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1985                 ins->sreg1 = sreg1;
1986                 ins->sreg2 = c->dreg;
1987                 MONO_ADD_INS (cfg->cbb, ins);
1988         } else {
1989                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1990                 ins->sreg1 = sreg1;
1991                 ins->inst_offset = mini_get_tls_offset (tls_key);
1992                 MONO_ADD_INS (cfg->cbb, ins);
1993         }
1994 }
1995
1996 /*
1997  * emit_push_lmf:
1998  *
1999  *   Emit IR to push the current LMF onto the LMF stack.
2000  */
2001 static void
2002 emit_push_lmf (MonoCompile *cfg)
2003 {
2004         /*
2005          * Emit IR to push the LMF:
2006          * lmf_addr = <lmf_addr from tls>
2007          * lmf->lmf_addr = lmf_addr
2008          * lmf->prev_lmf = *lmf_addr
2009          * *lmf_addr = lmf
2010          */
2011         int lmf_reg, prev_lmf_reg;
2012         MonoInst *ins, *lmf_ins;
2013
2014         if (!cfg->lmf_ir)
2015                 return;
2016
2017         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2018                 /* Load current lmf */
2019                 lmf_ins = mono_get_lmf_intrinsic (cfg);
2020                 g_assert (lmf_ins);
2021                 MONO_ADD_INS (cfg->cbb, lmf_ins);
2022                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2023                 lmf_reg = ins->dreg;
2024                 /* Save previous_lmf */
2025                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2026                 /* Set new LMF */
2027                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2028         } else {
2029                 /*
2030                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2031                  */
2032                 if (!cfg->lmf_addr_var)
2033                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2034
2035 #ifdef HOST_WIN32
2036                 ins = mono_get_jit_tls_intrinsic (cfg);
2037                 if (ins) {
2038                         int jit_tls_dreg = ins->dreg;
2039
2040                         MONO_ADD_INS (cfg->cbb, ins);
2041                         lmf_reg = alloc_preg (cfg);
2042                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2043                 } else {
2044                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2045                 }
2046 #else
2047                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2048                 if (lmf_ins) {
2049                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2050                 } else {
2051 #ifdef TARGET_IOS
2052                         MonoInst *args [16], *jit_tls_ins, *ins;
2053
2054                         /* Inline mono_get_lmf_addr () */
2055                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2056
2057                         /* Load mono_jit_tls_id */
2058                         EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2059                         /* call pthread_getspecific () */
2060                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2061                         /* lmf_addr = &jit_tls->lmf */
2062                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2063                         lmf_ins = ins;
2064 #else
2065                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2066 #endif
2067                 }
2068 #endif
2069                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2070
2071                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2072                 lmf_reg = ins->dreg;
2073
2074                 prev_lmf_reg = alloc_preg (cfg);
2075                 /* Save previous_lmf */
2076                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2077                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2078                 /* Set new lmf */
2079                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2080         }
2081 }
2082
2083 /*
2084  * emit_pop_lmf:
2085  *
2086  *   Emit IR to pop the current LMF from the LMF stack.
2087  */
2088 static void
2089 emit_pop_lmf (MonoCompile *cfg)
2090 {
2091         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2092         MonoInst *ins;
2093
2094         if (!cfg->lmf_ir)
2095                 return;
2096
2097         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2098         lmf_reg = ins->dreg;
2099
2100         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2101                 /* Load previous_lmf */
2102                 prev_lmf_reg = alloc_preg (cfg);
2103                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2104                 /* Set new LMF */
2105                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2106         } else {
2107                 /*
2108                  * Emit IR to pop the LMF:
2109                  * *(lmf->lmf_addr) = lmf->prev_lmf
2110                  */
2111                 /* This could be called before emit_push_lmf () */
2112                 if (!cfg->lmf_addr_var)
2113                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2114                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2115
2116                 prev_lmf_reg = alloc_preg (cfg);
2117                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2118                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2119         }
2120 }
2121
2122 static void
2123 emit_instrumentation_call (MonoCompile *cfg, void *func)
2124 {
2125         MonoInst *iargs [1];
2126
2127         /*
2128          * Avoid instrumenting inlined methods since it can
2129          * distort profiling results.
2130          */
2131         if (cfg->method != cfg->current_method)
2132                 return;
2133
2134         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2135                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2136                 mono_emit_jit_icall (cfg, func, iargs);
2137         }
2138 }
2139
2140 static int
2141 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt, MonoGenericSharingContext *gsctx)
2142 {
2143         if (type->byref)
2144                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2145
2146 handle_enum:
2147         type = mini_get_basic_type_from_generic (gsctx, type);
2148         type = mini_replace_type (type);
2149         switch (type->type) {
2150         case MONO_TYPE_VOID:
2151                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2152         case MONO_TYPE_I1:
2153         case MONO_TYPE_U1:
2154         case MONO_TYPE_BOOLEAN:
2155         case MONO_TYPE_I2:
2156         case MONO_TYPE_U2:
2157         case MONO_TYPE_CHAR:
2158         case MONO_TYPE_I4:
2159         case MONO_TYPE_U4:
2160                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2161         case MONO_TYPE_I:
2162         case MONO_TYPE_U:
2163         case MONO_TYPE_PTR:
2164         case MONO_TYPE_FNPTR:
2165                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2166         case MONO_TYPE_CLASS:
2167         case MONO_TYPE_STRING:
2168         case MONO_TYPE_OBJECT:
2169         case MONO_TYPE_SZARRAY:
2170         case MONO_TYPE_ARRAY:
2171                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2172         case MONO_TYPE_I8:
2173         case MONO_TYPE_U8:
2174                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2175         case MONO_TYPE_R4:
2176                 if (cfg->r4fp)
2177                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2178                 else
2179                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2180         case MONO_TYPE_R8:
2181                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2182         case MONO_TYPE_VALUETYPE:
2183                 if (type->data.klass->enumtype) {
2184                         type = mono_class_enum_basetype (type->data.klass);
2185                         goto handle_enum;
2186                 } else
2187                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2188         case MONO_TYPE_TYPEDBYREF:
2189                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2190         case MONO_TYPE_GENERICINST:
2191                 type = &type->data.generic_class->container_class->byval_arg;
2192                 goto handle_enum;
2193         case MONO_TYPE_VAR:
2194         case MONO_TYPE_MVAR:
2195                 /* gsharedvt */
2196                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2197         default:
2198                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2199         }
2200         return -1;
2201 }
2202
2203 /*
2204  * target_type_is_incompatible:
2205  * @cfg: MonoCompile context
2206  *
2207  * Check that the item @arg on the evaluation stack can be stored
2208  * in the target type (can be a local, or field, etc).
2209  * The cfg arg can be used to check if we need verification or just
2210  * validity checks.
2211  *
2212  * Returns: non-0 value if arg can't be stored on a target.
2213  */
2214 static int
2215 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2216 {
2217         MonoType *simple_type;
2218         MonoClass *klass;
2219
2220         target = mini_replace_type (target);
2221         if (target->byref) {
2222                 /* FIXME: check that the pointed to types match */
2223                 if (arg->type == STACK_MP)
2224                         return arg->klass != mono_class_from_mono_type (target);
2225                 if (arg->type == STACK_PTR)
2226                         return 0;
2227                 return 1;
2228         }
2229
2230         simple_type = mono_type_get_underlying_type (target);
2231         switch (simple_type->type) {
2232         case MONO_TYPE_VOID:
2233                 return 1;
2234         case MONO_TYPE_I1:
2235         case MONO_TYPE_U1:
2236         case MONO_TYPE_BOOLEAN:
2237         case MONO_TYPE_I2:
2238         case MONO_TYPE_U2:
2239         case MONO_TYPE_CHAR:
2240         case MONO_TYPE_I4:
2241         case MONO_TYPE_U4:
2242                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2243                         return 1;
2244                 return 0;
2245         case MONO_TYPE_PTR:
2246                 /* STACK_MP is needed when setting pinned locals */
2247                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2248                         return 1;
2249                 return 0;
2250         case MONO_TYPE_I:
2251         case MONO_TYPE_U:
2252         case MONO_TYPE_FNPTR:
2253                 /*
2254                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2255                  * in native int. (#688008).
2256                  */
2257                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2258                         return 1;
2259                 return 0;
2260         case MONO_TYPE_CLASS:
2261         case MONO_TYPE_STRING:
2262         case MONO_TYPE_OBJECT:
2263         case MONO_TYPE_SZARRAY:
2264         case MONO_TYPE_ARRAY:
2265                 if (arg->type != STACK_OBJ)
2266                         return 1;
2267                 /* FIXME: check type compatibility */
2268                 return 0;
2269         case MONO_TYPE_I8:
2270         case MONO_TYPE_U8:
2271                 if (arg->type != STACK_I8)
2272                         return 1;
2273                 return 0;
2274         case MONO_TYPE_R4:
2275                 if (arg->type != cfg->r4_stack_type)
2276                         return 1;
2277                 return 0;
2278         case MONO_TYPE_R8:
2279                 if (arg->type != STACK_R8)
2280                         return 1;
2281                 return 0;
2282         case MONO_TYPE_VALUETYPE:
2283                 if (arg->type != STACK_VTYPE)
2284                         return 1;
2285                 klass = mono_class_from_mono_type (simple_type);
2286                 if (klass != arg->klass)
2287                         return 1;
2288                 return 0;
2289         case MONO_TYPE_TYPEDBYREF:
2290                 if (arg->type != STACK_VTYPE)
2291                         return 1;
2292                 klass = mono_class_from_mono_type (simple_type);
2293                 if (klass != arg->klass)
2294                         return 1;
2295                 return 0;
2296         case MONO_TYPE_GENERICINST:
2297                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2298                         if (arg->type != STACK_VTYPE)
2299                                 return 1;
2300                         klass = mono_class_from_mono_type (simple_type);
2301                         if (klass != arg->klass)
2302                                 return 1;
2303                         return 0;
2304                 } else {
2305                         if (arg->type != STACK_OBJ)
2306                                 return 1;
2307                         /* FIXME: check type compatibility */
2308                         return 0;
2309                 }
2310         case MONO_TYPE_VAR:
2311         case MONO_TYPE_MVAR:
2312                 g_assert (cfg->generic_sharing_context);
2313                 if (mini_type_var_is_vt (cfg, simple_type)) {
2314                         if (arg->type != STACK_VTYPE)
2315                                 return 1;
2316                 } else {
2317                         if (arg->type != STACK_OBJ)
2318                                 return 1;
2319                 }
2320                 return 0;
2321         default:
2322                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2323         }
2324         return 1;
2325 }
2326
2327 /*
2328  * Prepare arguments for passing to a function call.
2329  * Return a non-zero value if the arguments can't be passed to the given
2330  * signature.
2331  * The type checks are not yet complete and some conversions may need
2332  * casts on 32 or 64 bit architectures.
2333  *
2334  * FIXME: implement this using target_type_is_incompatible ()
2335  */
2336 static int
2337 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2338 {
2339         MonoType *simple_type;
2340         int i;
2341
2342         if (sig->hasthis) {
2343                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2344                         return 1;
2345                 args++;
2346         }
2347         for (i = 0; i < sig->param_count; ++i) {
2348                 if (sig->params [i]->byref) {
2349                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2350                                 return 1;
2351                         continue;
2352                 }
2353                 simple_type = sig->params [i];
2354                 simple_type = mini_get_basic_type_from_generic (cfg->generic_sharing_context, simple_type);
2355 handle_enum:
2356                 switch (simple_type->type) {
2357                 case MONO_TYPE_VOID:
2358                         return 1;
2359                         continue;
2360                 case MONO_TYPE_I1:
2361                 case MONO_TYPE_U1:
2362                 case MONO_TYPE_BOOLEAN:
2363                 case MONO_TYPE_I2:
2364                 case MONO_TYPE_U2:
2365                 case MONO_TYPE_CHAR:
2366                 case MONO_TYPE_I4:
2367                 case MONO_TYPE_U4:
2368                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2369                                 return 1;
2370                         continue;
2371                 case MONO_TYPE_I:
2372                 case MONO_TYPE_U:
2373                 case MONO_TYPE_PTR:
2374                 case MONO_TYPE_FNPTR:
2375                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2376                                 return 1;
2377                         continue;
2378                 case MONO_TYPE_CLASS:
2379                 case MONO_TYPE_STRING:
2380                 case MONO_TYPE_OBJECT:
2381                 case MONO_TYPE_SZARRAY:
2382                 case MONO_TYPE_ARRAY:
2383                         if (args [i]->type != STACK_OBJ)
2384                                 return 1;
2385                         continue;
2386                 case MONO_TYPE_I8:
2387                 case MONO_TYPE_U8:
2388                         if (args [i]->type != STACK_I8)
2389                                 return 1;
2390                         continue;
2391                 case MONO_TYPE_R4:
2392                         if (args [i]->type != cfg->r4_stack_type)
2393                                 return 1;
2394                         continue;
2395                 case MONO_TYPE_R8:
2396                         if (args [i]->type != STACK_R8)
2397                                 return 1;
2398                         continue;
2399                 case MONO_TYPE_VALUETYPE:
2400                         if (simple_type->data.klass->enumtype) {
2401                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2402                                 goto handle_enum;
2403                         }
2404                         if (args [i]->type != STACK_VTYPE)
2405                                 return 1;
2406                         continue;
2407                 case MONO_TYPE_TYPEDBYREF:
2408                         if (args [i]->type != STACK_VTYPE)
2409                                 return 1;
2410                         continue;
2411                 case MONO_TYPE_GENERICINST:
2412                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2413                         goto handle_enum;
2414                 case MONO_TYPE_VAR:
2415                 case MONO_TYPE_MVAR:
2416                         /* gsharedvt */
2417                         if (args [i]->type != STACK_VTYPE)
2418                                 return 1;
2419                         continue;
2420                 default:
2421                         g_error ("unknown type 0x%02x in check_call_signature",
2422                                  simple_type->type);
2423                 }
2424         }
2425         return 0;
2426 }
2427
2428 static int
2429 callvirt_to_call (int opcode)
2430 {
2431         switch (opcode) {
2432         case OP_CALL_MEMBASE:
2433                 return OP_CALL;
2434         case OP_VOIDCALL_MEMBASE:
2435                 return OP_VOIDCALL;
2436         case OP_FCALL_MEMBASE:
2437                 return OP_FCALL;
2438         case OP_RCALL_MEMBASE:
2439                 return OP_RCALL;
2440         case OP_VCALL_MEMBASE:
2441                 return OP_VCALL;
2442         case OP_LCALL_MEMBASE:
2443                 return OP_LCALL;
2444         default:
2445                 g_assert_not_reached ();
2446         }
2447
2448         return -1;
2449 }
2450
2451 /* Either METHOD or IMT_ARG needs to be set */
2452 static void
2453 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2454 {
2455         int method_reg;
2456
2457         if (COMPILE_LLVM (cfg)) {
2458                 method_reg = alloc_preg (cfg);
2459
2460                 if (imt_arg) {
2461                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2462                 } else if (cfg->compile_aot) {
2463                         MONO_EMIT_NEW_AOTCONST (cfg, method_reg, method, MONO_PATCH_INFO_METHODCONST);
2464                 } else {
2465                         MonoInst *ins;
2466                         MONO_INST_NEW (cfg, ins, OP_PCONST);
2467                         ins->inst_p0 = method;
2468                         ins->dreg = method_reg;
2469                         MONO_ADD_INS (cfg->cbb, ins);
2470                 }
2471
2472 #ifdef ENABLE_LLVM
2473                 call->imt_arg_reg = method_reg;
2474 #endif
2475 #ifdef MONO_ARCH_IMT_REG
2476         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2477 #else
2478         /* Need this to keep the IMT arg alive */
2479         mono_call_inst_add_outarg_reg (cfg, call, method_reg, 0, FALSE);
2480 #endif
2481                 return;
2482         }
2483
2484 #ifdef MONO_ARCH_IMT_REG
2485         method_reg = alloc_preg (cfg);
2486
2487         if (imt_arg) {
2488                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2489         } else if (cfg->compile_aot) {
2490                 MONO_EMIT_NEW_AOTCONST (cfg, method_reg, method, MONO_PATCH_INFO_METHODCONST);
2491         } else {
2492                 MonoInst *ins;
2493                 MONO_INST_NEW (cfg, ins, OP_PCONST);
2494                 ins->inst_p0 = method;
2495                 ins->dreg = method_reg;
2496                 MONO_ADD_INS (cfg->cbb, ins);
2497         }
2498
2499         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2500 #else
2501         mono_arch_emit_imt_argument (cfg, call, imt_arg);
2502 #endif
2503 }
2504
2505 static MonoJumpInfo *
2506 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2507 {
2508         MonoJumpInfo *ji = mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2509
2510         ji->ip.i = ip;
2511         ji->type = type;
2512         ji->data.target = target;
2513
2514         return ji;
2515 }
2516
2517 static int
2518 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2519 {
2520         if (cfg->generic_sharing_context)
2521                 return mono_class_check_context_used (klass);
2522         else
2523                 return 0;
2524 }
2525
2526 static int
2527 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2528 {
2529         if (cfg->generic_sharing_context)
2530                 return mono_method_check_context_used (method);
2531         else
2532                 return 0;
2533 }
2534
2535 /*
2536  * check_method_sharing:
2537  *
2538  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2539  */
2540 static void
2541 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2542 {
2543         gboolean pass_vtable = FALSE;
2544         gboolean pass_mrgctx = FALSE;
2545
2546         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2547                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2548                 gboolean sharable = FALSE;
2549
2550                 if (mono_method_is_generic_sharable (cmethod, TRUE)) {
2551                         sharable = TRUE;
2552                 } else {
2553                         gboolean sharing_enabled = mono_class_generic_sharing_enabled (cmethod->klass);
2554                         MonoGenericContext *context = mini_class_get_context (cmethod->klass);
2555                         gboolean context_sharable = mono_generic_context_is_sharable (context, TRUE);
2556
2557                         sharable = sharing_enabled && context_sharable;
2558                 }
2559
2560                 /*
2561                  * Pass vtable iff target method might
2562                  * be shared, which means that sharing
2563                  * is enabled for its class and its
2564                  * context is sharable (and it's not a
2565                  * generic method).
2566                  */
2567                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2568                         pass_vtable = TRUE;
2569         }
2570
2571         if (mini_method_get_context (cmethod) &&
2572                 mini_method_get_context (cmethod)->method_inst) {
2573                 g_assert (!pass_vtable);
2574
2575                 if (mono_method_is_generic_sharable (cmethod, TRUE)) {
2576                         pass_mrgctx = TRUE;
2577                 } else {
2578                         gboolean sharing_enabled = mono_class_generic_sharing_enabled (cmethod->klass);
2579                         MonoGenericContext *context = mini_method_get_context (cmethod);
2580                         gboolean context_sharable = mono_generic_context_is_sharable (context, TRUE);
2581
2582                         if (sharing_enabled && context_sharable)
2583                                 pass_mrgctx = TRUE;
2584                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, mono_method_signature (cmethod)))
2585                                 pass_mrgctx = TRUE;
2586                 }
2587         }
2588
2589         if (out_pass_vtable)
2590                 *out_pass_vtable = pass_vtable;
2591         if (out_pass_mrgctx)
2592                 *out_pass_mrgctx = pass_mrgctx;
2593 }
2594
2595 inline static MonoCallInst *
2596 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2597                                          MonoInst **args, int calli, int virtual, int tail, int rgctx, int unbox_trampoline)
2598 {
2599         MonoType *sig_ret;
2600         MonoCallInst *call;
2601 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2602         int i;
2603 #endif
2604
2605         if (tail) {
2606                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2607
2608                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2609         } else
2610                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual, cfg->generic_sharing_context));
2611
2612         call->args = args;
2613         call->signature = sig;
2614         call->rgctx_reg = rgctx;
2615         sig_ret = mini_replace_type (sig->ret);
2616
2617         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2618
2619         if (tail) {
2620                 if (mini_type_is_vtype (cfg, sig_ret)) {
2621                         call->vret_var = cfg->vret_addr;
2622                         //g_assert_not_reached ();
2623                 }
2624         } else if (mini_type_is_vtype (cfg, sig_ret)) {
2625                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2626                 MonoInst *loada;
2627
2628                 temp->backend.is_pinvoke = sig->pinvoke;
2629
2630                 /*
2631                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2632                  * address of return value to increase optimization opportunities.
2633                  * Before vtype decomposition, the dreg of the call ins itself represents the
2634                  * fact the call modifies the return value. After decomposition, the call will
2635                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2636                  * will be transformed into an LDADDR.
2637                  */
2638                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2639                 loada->dreg = alloc_preg (cfg);
2640                 loada->inst_p0 = temp;
2641                 /* We reference the call too since call->dreg could change during optimization */
2642                 loada->inst_p1 = call;
2643                 MONO_ADD_INS (cfg->cbb, loada);
2644
2645                 call->inst.dreg = temp->dreg;
2646
2647                 call->vret_var = loada;
2648         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2649                 call->inst.dreg = alloc_dreg (cfg, call->inst.type);
2650
2651 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2652         if (COMPILE_SOFT_FLOAT (cfg)) {
2653                 /*
2654                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2655                  * an icall, but that cannot be done during the call sequence since it would clobber
2656                  * the call registers + the stack. So we do it before emitting the call.
2657                  */
2658                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2659                         MonoType *t;
2660                         MonoInst *in = call->args [i];
2661
2662                         if (i >= sig->hasthis)
2663                                 t = sig->params [i - sig->hasthis];
2664                         else
2665                                 t = &mono_defaults.int_class->byval_arg;
2666                         t = mono_type_get_underlying_type (t);
2667
2668                         if (!t->byref && t->type == MONO_TYPE_R4) {
2669                                 MonoInst *iargs [1];
2670                                 MonoInst *conv;
2671
2672                                 iargs [0] = in;
2673                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2674
2675                                 /* The result will be in an int vreg */
2676                                 call->args [i] = conv;
2677                         }
2678                 }
2679         }
2680 #endif
2681
2682         call->need_unbox_trampoline = unbox_trampoline;
2683
2684 #ifdef ENABLE_LLVM
2685         if (COMPILE_LLVM (cfg))
2686                 mono_llvm_emit_call (cfg, call);
2687         else
2688                 mono_arch_emit_call (cfg, call);
2689 #else
2690         mono_arch_emit_call (cfg, call);
2691 #endif
2692
2693         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2694         cfg->flags |= MONO_CFG_HAS_CALLS;
2695
2696         return call;
2697 }
2698
2699 static void
2700 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2701 {
2702 #ifdef MONO_ARCH_RGCTX_REG
2703         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2704         cfg->uses_rgctx_reg = TRUE;
2705         call->rgctx_reg = TRUE;
2706 #ifdef ENABLE_LLVM
2707         call->rgctx_arg_reg = rgctx_reg;
2708 #endif
2709 #else
2710         NOT_IMPLEMENTED;
2711 #endif
2712 }
2713
2714 inline static MonoInst*
2715 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2716 {
2717         MonoCallInst *call;
2718         MonoInst *ins;
2719         int rgctx_reg = -1;
2720         gboolean check_sp = FALSE;
2721
2722         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2723                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2724
2725                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2726                         check_sp = TRUE;
2727         }
2728
2729         if (rgctx_arg) {
2730                 rgctx_reg = mono_alloc_preg (cfg);
2731                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2732         }
2733
2734         if (check_sp) {
2735                 if (!cfg->stack_inbalance_var)
2736                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2737
2738                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2739                 ins->dreg = cfg->stack_inbalance_var->dreg;
2740                 MONO_ADD_INS (cfg->cbb, ins);
2741         }
2742
2743         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2744
2745         call->inst.sreg1 = addr->dreg;
2746
2747         if (imt_arg)
2748                 emit_imt_argument (cfg, call, NULL, imt_arg);
2749
2750         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2751
2752         if (check_sp) {
2753                 int sp_reg;
2754
2755                 sp_reg = mono_alloc_preg (cfg);
2756
2757                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2758                 ins->dreg = sp_reg;
2759                 MONO_ADD_INS (cfg->cbb, ins);
2760
2761                 /* Restore the stack so we don't crash when throwing the exception */
2762                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2763                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2764                 MONO_ADD_INS (cfg->cbb, ins);
2765
2766                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2767                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2768         }
2769
2770         if (rgctx_arg)
2771                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2772
2773         return (MonoInst*)call;
2774 }
2775
2776 static MonoInst*
2777 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2778
2779 static MonoInst*
2780 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2781 static MonoInst*
2782 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2783
2784 static MonoInst*
2785 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2786                                                         MonoInst **args, MonoInst *this, MonoInst *imt_arg, MonoInst *rgctx_arg)
2787 {
2788 #ifndef DISABLE_REMOTING
2789         gboolean might_be_remote = FALSE;
2790 #endif
2791         gboolean virtual = this != NULL;
2792         gboolean enable_for_aot = TRUE;
2793         int context_used;
2794         MonoCallInst *call;
2795         int rgctx_reg = 0;
2796         gboolean need_unbox_trampoline;
2797
2798         if (!sig)
2799                 sig = mono_method_signature (method);
2800
2801         if (rgctx_arg) {
2802                 rgctx_reg = mono_alloc_preg (cfg);
2803                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2804         }
2805
2806         if (method->string_ctor) {
2807                 /* Create the real signature */
2808                 /* FIXME: Cache these */
2809                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2810                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2811
2812                 sig = ctor_sig;
2813         }
2814
2815         context_used = mini_method_check_context_used (cfg, method);
2816
2817 #ifndef DISABLE_REMOTING
2818         might_be_remote = this && sig->hasthis &&
2819                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2820                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this) || context_used);
2821
2822         if (might_be_remote && context_used) {
2823                 MonoInst *addr;
2824
2825                 g_assert (cfg->generic_sharing_context);
2826
2827                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2828
2829                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2830         }
2831 #endif
2832
2833         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2834
2835         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2836
2837 #ifndef DISABLE_REMOTING
2838         if (might_be_remote)
2839                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2840         else
2841 #endif
2842                 call->method = method;
2843         call->inst.flags |= MONO_INST_HAS_METHOD;
2844         call->inst.inst_left = this;
2845         call->tail_call = tail;
2846
2847         if (virtual) {
2848                 int vtable_reg, slot_reg, this_reg;
2849                 int offset;
2850
2851                 this_reg = this->dreg;
2852
2853                 if (ARCH_HAVE_DELEGATE_TRAMPOLINES && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2854                         MonoInst *dummy_use;
2855
2856                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2857
2858                         /* Make a call to delegate->invoke_impl */
2859                         call->inst.inst_basereg = this_reg;
2860                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2861                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2862
2863                         /* We must emit a dummy use here because the delegate trampoline will
2864                         replace the 'this' argument with the delegate target making this activation
2865                         no longer a root for the delegate.
2866                         This is an issue for delegates that target collectible code such as dynamic
2867                         methods of GC'able assemblies.
2868
2869                         For a test case look into #667921.
2870
2871                         FIXME: a dummy use is not the best way to do it as the local register allocator
2872                         will put it on a caller save register and spil it around the call.
2873                         Ideally, we would either put it on a callee save register or only do the store part.
2874                          */
2875                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2876
2877                         return (MonoInst*)call;
2878                 }
2879
2880                 if ((!cfg->compile_aot || enable_for_aot) &&
2881                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2882                          (MONO_METHOD_IS_FINAL (method) &&
2883                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2884                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2885                         /*
2886                          * the method is not virtual, we just need to ensure this is not null
2887                          * and then we can call the method directly.
2888                          */
2889 #ifndef DISABLE_REMOTING
2890                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2891                                 /*
2892                                  * The check above ensures method is not gshared, this is needed since
2893                                  * gshared methods can't have wrappers.
2894                                  */
2895                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2896                         }
2897 #endif
2898
2899                         if (!method->string_ctor)
2900                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2901
2902                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2903                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2904                         /*
2905                          * the method is virtual, but we can statically dispatch since either
2906                          * it's class or the method itself are sealed.
2907                          * But first we need to ensure it's not a null reference.
2908                          */
2909                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2910
2911                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2912                 } else {
2913                         vtable_reg = alloc_preg (cfg);
2914                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2915                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2916                                 slot_reg = -1;
2917                                 if (mono_use_imt) {
2918                                         guint32 imt_slot = mono_method_get_imt_slot (method);
2919                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2920                                         slot_reg = vtable_reg;
2921                                         offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2922                                 }
2923                                 if (slot_reg == -1) {
2924                                         slot_reg = alloc_preg (cfg);
2925                                         mini_emit_load_intf_reg_vtable (cfg, slot_reg, vtable_reg, method->klass);
2926                                         offset = mono_method_get_vtable_index (method) * SIZEOF_VOID_P;
2927                                 }
2928                         } else {
2929                                 slot_reg = vtable_reg;
2930                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2931                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2932                                 if (imt_arg) {
2933                                         g_assert (mono_method_signature (method)->generic_param_count);
2934                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2935                                 }
2936                         }
2937
2938                         call->inst.sreg1 = slot_reg;
2939                         call->inst.inst_offset = offset;
2940                         call->virtual = TRUE;
2941                 }
2942         }
2943
2944         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2945
2946         if (rgctx_arg)
2947                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2948
2949         return (MonoInst*)call;
2950 }
2951
2952 MonoInst*
2953 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this)
2954 {
2955         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this, NULL, NULL);
2956 }
2957
2958 MonoInst*
2959 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2960                                            MonoInst **args)
2961 {
2962         MonoCallInst *call;
2963
2964         g_assert (sig);
2965
2966         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2967         call->fptr = func;
2968
2969         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2970
2971         return (MonoInst*)call;
2972 }
2973
2974 MonoInst*
2975 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2976 {
2977         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2978
2979         g_assert (info);
2980
2981         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2982 }
2983
2984 /*
2985  * mono_emit_abs_call:
2986  *
2987  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2988  */
2989 inline static MonoInst*
2990 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2991                                         MonoMethodSignature *sig, MonoInst **args)
2992 {
2993         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2994         MonoInst *ins;
2995
2996         /*
2997          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2998          * handle it.
2999          */
3000         if (cfg->abs_patches == NULL)
3001                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
3002         g_hash_table_insert (cfg->abs_patches, ji, ji);
3003         ins = mono_emit_native_call (cfg, ji, sig, args);
3004         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
3005         return ins;
3006 }
3007
3008 static MonoInst*
3009 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3010 {
3011         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3012                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3013                         int widen_op = -1;
3014
3015                         /*
3016                          * Native code might return non register sized integers
3017                          * without initializing the upper bits.
3018                          */
3019                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3020                         case OP_LOADI1_MEMBASE:
3021                                 widen_op = OP_ICONV_TO_I1;
3022                                 break;
3023                         case OP_LOADU1_MEMBASE:
3024                                 widen_op = OP_ICONV_TO_U1;
3025                                 break;
3026                         case OP_LOADI2_MEMBASE:
3027                                 widen_op = OP_ICONV_TO_I2;
3028                                 break;
3029                         case OP_LOADU2_MEMBASE:
3030                                 widen_op = OP_ICONV_TO_U2;
3031                                 break;
3032                         default:
3033                                 break;
3034                         }
3035
3036                         if (widen_op != -1) {
3037                                 int dreg = alloc_preg (cfg);
3038                                 MonoInst *widen;
3039
3040                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3041                                 widen->type = ins->type;
3042                                 ins = widen;
3043                         }
3044                 }
3045         }
3046
3047         return ins;
3048 }
3049
3050 static MonoMethod*
3051 get_memcpy_method (void)
3052 {
3053         static MonoMethod *memcpy_method = NULL;
3054         if (!memcpy_method) {
3055                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3056                 if (!memcpy_method)
3057                         g_error ("Old corlib found. Install a new one");
3058         }
3059         return memcpy_method;
3060 }
3061
3062 static void
3063 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3064 {
3065         MonoClassField *field;
3066         gpointer iter = NULL;
3067
3068         while ((field = mono_class_get_fields (klass, &iter))) {
3069                 int foffset;
3070
3071                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3072                         continue;
3073                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3074                 if (mini_type_is_reference (cfg, mono_field_get_type (field))) {
3075                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3076                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3077                 } else {
3078                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3079                         if (field_class->has_references)
3080                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3081                 }
3082         }
3083 }
3084
3085 static void
3086 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3087 {
3088         int card_table_shift_bits;
3089         gpointer card_table_mask;
3090         guint8 *card_table;
3091         MonoInst *dummy_use;
3092         int nursery_shift_bits;
3093         size_t nursery_size;
3094         gboolean has_card_table_wb = FALSE;
3095
3096         if (!cfg->gen_write_barriers)
3097                 return;
3098
3099         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3100
3101         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3102
3103 #ifdef MONO_ARCH_HAVE_CARD_TABLE_WBARRIER
3104         has_card_table_wb = TRUE;
3105 #endif
3106
3107         if (has_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3108                 MonoInst *wbarrier;
3109
3110                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3111                 wbarrier->sreg1 = ptr->dreg;
3112                 wbarrier->sreg2 = value->dreg;
3113                 MONO_ADD_INS (cfg->cbb, wbarrier);
3114         } else if (card_table) {
3115                 int offset_reg = alloc_preg (cfg);
3116                 int card_reg  = alloc_preg (cfg);
3117                 MonoInst *ins;
3118
3119                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3120                 if (card_table_mask)
3121                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3122
3123                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3124                  * IMM's larger than 32bits.
3125                  */
3126                 if (cfg->compile_aot) {
3127                         MONO_EMIT_NEW_AOTCONST (cfg, card_reg, NULL, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR);
3128                 } else {
3129                         MONO_INST_NEW (cfg, ins, OP_PCONST);
3130                         ins->inst_p0 = card_table;
3131                         ins->dreg = card_reg;
3132                         MONO_ADD_INS (cfg->cbb, ins);
3133                 }
3134
3135                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3136                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3137         } else {
3138                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3139                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3140         }
3141
3142         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3143 }
3144
3145 static gboolean
3146 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3147 {
3148         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3149         unsigned need_wb = 0;
3150
3151         if (align == 0)
3152                 align = 4;
3153
3154         /*types with references can't have alignment smaller than sizeof(void*) */
3155         if (align < SIZEOF_VOID_P)
3156                 return FALSE;
3157
3158         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3159         if (size > 32 * SIZEOF_VOID_P)
3160                 return FALSE;
3161
3162         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3163
3164         /* We don't unroll more than 5 stores to avoid code bloat. */
3165         if (size > 5 * SIZEOF_VOID_P) {
3166                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3167                 size += (SIZEOF_VOID_P - 1);
3168                 size &= ~(SIZEOF_VOID_P - 1);
3169
3170                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3171                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3172                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3173                 return TRUE;
3174         }
3175
3176         destreg = iargs [0]->dreg;
3177         srcreg = iargs [1]->dreg;
3178         offset = 0;
3179
3180         dest_ptr_reg = alloc_preg (cfg);
3181         tmp_reg = alloc_preg (cfg);
3182
3183         /*tmp = dreg*/
3184         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3185
3186         while (size >= SIZEOF_VOID_P) {
3187                 MonoInst *load_inst;
3188                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3189                 load_inst->dreg = tmp_reg;
3190                 load_inst->inst_basereg = srcreg;
3191                 load_inst->inst_offset = offset;
3192                 MONO_ADD_INS (cfg->cbb, load_inst);
3193
3194                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3195
3196                 if (need_wb & 0x1)
3197                         emit_write_barrier (cfg, iargs [0], load_inst);
3198
3199                 offset += SIZEOF_VOID_P;
3200                 size -= SIZEOF_VOID_P;
3201                 need_wb >>= 1;
3202
3203                 /*tmp += sizeof (void*)*/
3204                 if (size >= SIZEOF_VOID_P) {
3205                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3206                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3207                 }
3208         }
3209
3210         /* Those cannot be references since size < sizeof (void*) */
3211         while (size >= 4) {
3212                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3213                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3214                 offset += 4;
3215                 size -= 4;
3216         }
3217
3218         while (size >= 2) {
3219                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3220                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3221                 offset += 2;
3222                 size -= 2;
3223         }
3224
3225         while (size >= 1) {
3226                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3227                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3228                 offset += 1;
3229                 size -= 1;
3230         }
3231
3232         return TRUE;
3233 }
3234
3235 /*
3236  * Emit code to copy a valuetype of type @klass whose address is stored in
3237  * @src->dreg to memory whose address is stored at @dest->dreg.
3238  */
3239 void
3240 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3241 {
3242         MonoInst *iargs [4];
3243         int context_used, n;
3244         guint32 align = 0;
3245         MonoMethod *memcpy_method;
3246         MonoInst *size_ins = NULL;
3247         MonoInst *memcpy_ins = NULL;
3248
3249         g_assert (klass);
3250         /*
3251          * This check breaks with spilled vars... need to handle it during verification anyway.
3252          * g_assert (klass && klass == src->klass && klass == dest->klass);
3253          */
3254
3255         if (mini_is_gsharedvt_klass (cfg, klass)) {
3256                 g_assert (!native);
3257                 context_used = mini_class_check_context_used (cfg, klass);
3258                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3259                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3260         }
3261
3262         if (native)
3263                 n = mono_class_native_size (klass, &align);
3264         else
3265                 n = mono_class_value_size (klass, &align);
3266
3267         /* if native is true there should be no references in the struct */
3268         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3269                 /* Avoid barriers when storing to the stack */
3270                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3271                           (dest->opcode == OP_LDADDR))) {
3272                         int context_used;
3273
3274                         iargs [0] = dest;
3275                         iargs [1] = src;
3276
3277                         context_used = mini_class_check_context_used (cfg, klass);
3278
3279                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3280                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3281                                 return;
3282                         } else if (context_used) {
3283                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3284                         }  else {
3285                                 if (cfg->compile_aot) {
3286                                         EMIT_NEW_CLASSCONST (cfg, iargs [2], klass);
3287                                 } else {
3288                                         EMIT_NEW_PCONST (cfg, iargs [2], klass);
3289                                         mono_class_compute_gc_descriptor (klass);
3290                                 }
3291                         }
3292
3293                         if (size_ins)
3294                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3295                         else
3296                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3297                         return;
3298                 }
3299         }
3300
3301         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3302                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3303                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3304         } else {
3305                 iargs [0] = dest;
3306                 iargs [1] = src;
3307                 if (size_ins)
3308                         iargs [2] = size_ins;
3309                 else
3310                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3311
3312                 memcpy_method = get_memcpy_method ();
3313                 if (memcpy_ins)
3314                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3315                 else
3316                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3317         }
3318 }
3319
3320 static MonoMethod*
3321 get_memset_method (void)
3322 {
3323         static MonoMethod *memset_method = NULL;
3324         if (!memset_method) {
3325                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3326                 if (!memset_method)
3327                         g_error ("Old corlib found. Install a new one");
3328         }
3329         return memset_method;
3330 }
3331
3332 void
3333 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3334 {
3335         MonoInst *iargs [3];
3336         int n, context_used;
3337         guint32 align;
3338         MonoMethod *memset_method;
3339         MonoInst *size_ins = NULL;
3340         MonoInst *bzero_ins = NULL;
3341         static MonoMethod *bzero_method;
3342
3343         /* FIXME: Optimize this for the case when dest is an LDADDR */
3344
3345         mono_class_init (klass);
3346         if (mini_is_gsharedvt_klass (cfg, klass)) {
3347                 context_used = mini_class_check_context_used (cfg, klass);
3348                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3349                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3350                 if (!bzero_method)
3351                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3352                 g_assert (bzero_method);
3353                 iargs [0] = dest;
3354                 iargs [1] = size_ins;
3355                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3356                 return;
3357         }
3358
3359         n = mono_class_value_size (klass, &align);
3360
3361         if (n <= sizeof (gpointer) * 8) {
3362                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3363         }
3364         else {
3365                 memset_method = get_memset_method ();
3366                 iargs [0] = dest;
3367                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3368                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3369                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3370         }
3371 }
3372
3373 static MonoInst*
3374 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3375 {
3376         MonoInst *this = NULL;
3377
3378         g_assert (cfg->generic_sharing_context);
3379
3380         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3381                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3382                         !method->klass->valuetype)
3383                 EMIT_NEW_ARGLOAD (cfg, this, 0);
3384
3385         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3386                 MonoInst *mrgctx_loc, *mrgctx_var;
3387
3388                 g_assert (!this);
3389                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3390
3391                 mrgctx_loc = mono_get_vtable_var (cfg);
3392                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3393
3394                 return mrgctx_var;
3395         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3396                 MonoInst *vtable_loc, *vtable_var;
3397
3398                 g_assert (!this);
3399
3400                 vtable_loc = mono_get_vtable_var (cfg);
3401                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3402
3403                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3404                         MonoInst *mrgctx_var = vtable_var;
3405                         int vtable_reg;
3406
3407                         vtable_reg = alloc_preg (cfg);
3408                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3409                         vtable_var->type = STACK_PTR;
3410                 }
3411
3412                 return vtable_var;
3413         } else {
3414                 MonoInst *ins;
3415                 int vtable_reg;
3416
3417                 vtable_reg = alloc_preg (cfg);
3418                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3419                 return ins;
3420         }
3421 }
3422
3423 static MonoJumpInfoRgctxEntry *
3424 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3425 {
3426         MonoJumpInfoRgctxEntry *res = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3427         res->method = method;
3428         res->in_mrgctx = in_mrgctx;
3429         res->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3430         res->data->type = patch_type;
3431         res->data->data.target = patch_data;
3432         res->info_type = info_type;
3433
3434         return res;
3435 }
3436
3437 static inline MonoInst*
3438 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3439 {
3440         return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3441 }
3442
3443 static MonoInst*
3444 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3445                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3446 {
3447         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);
3448         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3449
3450         return emit_rgctx_fetch (cfg, rgctx, entry);
3451 }
3452
3453 static MonoInst*
3454 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3455                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3456 {
3457         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);
3458         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3459
3460         return emit_rgctx_fetch (cfg, rgctx, entry);
3461 }
3462
3463 static MonoInst*
3464 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3465                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3466 {
3467         MonoJumpInfoGSharedVtCall *call_info;
3468         MonoJumpInfoRgctxEntry *entry;
3469         MonoInst *rgctx;
3470
3471         call_info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3472         call_info->sig = sig;
3473         call_info->method = cmethod;
3474
3475         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);
3476         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3477
3478         return emit_rgctx_fetch (cfg, rgctx, entry);
3479 }
3480
3481
3482 static MonoInst*
3483 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3484                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3485 {
3486         MonoJumpInfoRgctxEntry *entry;
3487         MonoInst *rgctx;
3488
3489         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);
3490         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3491
3492         return emit_rgctx_fetch (cfg, rgctx, entry);
3493 }
3494
3495 /*
3496  * emit_get_rgctx_method:
3497  *
3498  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3499  * normal constants, else emit a load from the rgctx.
3500  */
3501 static MonoInst*
3502 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3503                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3504 {
3505         if (!context_used) {
3506                 MonoInst *ins;
3507
3508                 switch (rgctx_type) {
3509                 case MONO_RGCTX_INFO_METHOD:
3510                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3511                         return ins;
3512                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3513                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3514                         return ins;
3515                 default:
3516                         g_assert_not_reached ();
3517                 }
3518         } else {
3519                 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);
3520                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3521
3522                 return emit_rgctx_fetch (cfg, rgctx, entry);
3523         }
3524 }
3525
3526 static MonoInst*
3527 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3528                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3529 {
3530         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);
3531         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3532
3533         return emit_rgctx_fetch (cfg, rgctx, entry);
3534 }
3535
3536 static int
3537 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3538 {
3539         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3540         MonoRuntimeGenericContextInfoTemplate *template;
3541         int i, idx;
3542
3543         g_assert (info);
3544
3545         for (i = 0; i < info->num_entries; ++i) {
3546                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3547
3548                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3549                         return i;
3550         }
3551
3552         if (info->num_entries == info->count_entries) {
3553                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3554                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3555
3556                 new_entries = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3557
3558                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3559                 info->entries = new_entries;
3560                 info->count_entries = new_count_entries;
3561         }
3562
3563         idx = info->num_entries;
3564         template = &info->entries [idx];
3565         template->info_type = rgctx_type;
3566         template->data = data;
3567
3568         info->num_entries ++;
3569
3570         return idx;
3571 }
3572
3573 /*
3574  * emit_get_gsharedvt_info:
3575  *
3576  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3577  */
3578 static MonoInst*
3579 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3580 {
3581         MonoInst *ins;
3582         int idx, dreg;
3583
3584         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3585         /* Load info->entries [idx] */
3586         dreg = alloc_preg (cfg);
3587         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3588
3589         return ins;
3590 }
3591
3592 static MonoInst*
3593 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3594 {
3595         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3596 }
3597
3598 /*
3599  * On return the caller must check @klass for load errors.
3600  */
3601 static void
3602 emit_generic_class_init (MonoCompile *cfg, MonoClass *klass)
3603 {
3604         MonoInst *vtable_arg;
3605         MonoCallInst *call;
3606         int context_used;
3607
3608         context_used = mini_class_check_context_used (cfg, klass);
3609
3610         if (context_used) {
3611                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3612                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3613         } else {
3614                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3615
3616                 if (!vtable)
3617                         return;
3618                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3619         }
3620
3621         if (COMPILE_LLVM (cfg))
3622                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline_llvm, &vtable_arg);
3623         else
3624                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline, &vtable_arg);
3625 #ifdef MONO_ARCH_VTABLE_REG
3626         mono_call_inst_add_outarg_reg (cfg, call, vtable_arg->dreg, MONO_ARCH_VTABLE_REG, FALSE);
3627         cfg->uses_vtable_reg = TRUE;
3628 #else
3629         NOT_IMPLEMENTED;
3630 #endif
3631 }
3632
3633 static void
3634 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3635 {
3636         MonoInst *ins;
3637
3638         if (cfg->gen_seq_points && cfg->method == method) {
3639                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3640                 if (nonempty_stack)
3641                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3642                 MONO_ADD_INS (cfg->cbb, ins);
3643         }
3644 }
3645
3646 static void
3647 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check, MonoBasicBlock **out_bblock)
3648 {
3649         if (mini_get_debug_options ()->better_cast_details) {
3650                 int vtable_reg = alloc_preg (cfg);
3651                 int klass_reg = alloc_preg (cfg);
3652                 MonoBasicBlock *is_null_bb = NULL;
3653                 MonoInst *tls_get;
3654                 int to_klass_reg, context_used;
3655
3656                 if (null_check) {
3657                         NEW_BBLOCK (cfg, is_null_bb);
3658
3659                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3660                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3661                 }
3662
3663                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3664                 if (!tls_get) {
3665                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3666                         exit (1);
3667                 }
3668
3669                 MONO_ADD_INS (cfg->cbb, tls_get);
3670                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3671                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3672
3673                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3674
3675                 context_used = mini_class_check_context_used (cfg, klass);
3676                 if (context_used) {
3677                         MonoInst *class_ins;
3678
3679                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3680                         to_klass_reg = class_ins->dreg;
3681                 } else {
3682                         to_klass_reg = alloc_preg (cfg);
3683                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3684                 }
3685                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3686
3687                 if (null_check) {
3688                         MONO_START_BB (cfg, is_null_bb);
3689                         if (out_bblock)
3690                                 *out_bblock = cfg->cbb;
3691                 }
3692         }
3693 }
3694
3695 static void
3696 reset_cast_details (MonoCompile *cfg)
3697 {
3698         /* Reset the variables holding the cast details */
3699         if (mini_get_debug_options ()->better_cast_details) {
3700                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3701
3702                 MONO_ADD_INS (cfg->cbb, tls_get);
3703                 /* It is enough to reset the from field */
3704                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3705         }
3706 }
3707
3708 /*
3709  * On return the caller must check @array_class for load errors
3710  */
3711 static void
3712 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3713 {
3714         int vtable_reg = alloc_preg (cfg);
3715         int context_used;
3716
3717         context_used = mini_class_check_context_used (cfg, array_class);
3718
3719         save_cast_details (cfg, array_class, obj->dreg, FALSE, NULL);
3720
3721         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3722
3723         if (cfg->opt & MONO_OPT_SHARED) {
3724                 int class_reg = alloc_preg (cfg);
3725                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3726                 if (cfg->compile_aot) {
3727                         int klass_reg = alloc_preg (cfg);
3728                         MONO_EMIT_NEW_CLASSCONST (cfg, klass_reg, array_class);
3729                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, klass_reg);
3730                 } else {
3731                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, class_reg, array_class);
3732                 }
3733         } else if (context_used) {
3734                 MonoInst *vtable_ins;
3735
3736                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3737                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3738         } else {
3739                 if (cfg->compile_aot) {
3740                         int vt_reg;
3741                         MonoVTable *vtable;
3742
3743                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3744                                 return;
3745                         vt_reg = alloc_preg (cfg);
3746                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3747                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3748                 } else {
3749                         MonoVTable *vtable;
3750                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3751                                 return;
3752                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3753                 }
3754         }
3755
3756         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3757
3758         reset_cast_details (cfg);
3759 }
3760
3761 /**
3762  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3763  * generic code is generated.
3764  */
3765 static MonoInst*
3766 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3767 {
3768         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3769
3770         if (context_used) {
3771                 MonoInst *rgctx, *addr;
3772
3773                 /* FIXME: What if the class is shared?  We might not
3774                    have to get the address of the method from the
3775                    RGCTX. */
3776                 addr = emit_get_rgctx_method (cfg, context_used, method,
3777                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3778
3779                 rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3780
3781                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3782         } else {
3783                 gboolean pass_vtable, pass_mrgctx;
3784                 MonoInst *rgctx_arg = NULL;
3785
3786                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3787                 g_assert (!pass_mrgctx);
3788
3789                 if (pass_vtable) {
3790                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3791
3792                         g_assert (vtable);
3793                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3794                 }
3795
3796                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3797         }
3798 }
3799
3800 static MonoInst*
3801 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3802 {
3803         MonoInst *add;
3804         int obj_reg;
3805         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3806         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3807         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3808         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3809
3810         obj_reg = sp [0]->dreg;
3811         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3812         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3813
3814         /* FIXME: generics */
3815         g_assert (klass->rank == 0);
3816
3817         // Check rank == 0
3818         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3819         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3820
3821         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3822         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3823
3824         if (context_used) {
3825                 MonoInst *element_class;
3826
3827                 /* This assertion is from the unboxcast insn */
3828                 g_assert (klass->rank == 0);
3829
3830                 element_class = emit_get_rgctx_klass (cfg, context_used,
3831                                 klass->element_class, MONO_RGCTX_INFO_KLASS);
3832
3833                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3834                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3835         } else {
3836                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE, NULL);
3837                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3838                 reset_cast_details (cfg);
3839         }
3840
3841         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3842         MONO_ADD_INS (cfg->cbb, add);
3843         add->type = STACK_MP;
3844         add->klass = klass;
3845
3846         return add;
3847 }
3848
3849 static MonoInst*
3850 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj, MonoBasicBlock **out_cbb)
3851 {
3852         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3853         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3854         MonoInst *ins;
3855         int dreg, addr_reg;
3856
3857         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3858
3859         /* obj */
3860         args [0] = obj;
3861
3862         /* klass */
3863         args [1] = klass_inst;
3864
3865         /* CASTCLASS */
3866         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3867
3868         NEW_BBLOCK (cfg, is_ref_bb);
3869         NEW_BBLOCK (cfg, is_nullable_bb);
3870         NEW_BBLOCK (cfg, end_bb);
3871         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3872         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 1);
3873         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3874
3875         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 2);
3876         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3877
3878         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3879         addr_reg = alloc_dreg (cfg, STACK_MP);
3880
3881         /* Non-ref case */
3882         /* UNBOX */
3883         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3884         MONO_ADD_INS (cfg->cbb, addr);
3885
3886         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3887
3888         /* Ref case */
3889         MONO_START_BB (cfg, is_ref_bb);
3890
3891         /* Save the ref to a temporary */
3892         dreg = alloc_ireg (cfg);
3893         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3894         addr->dreg = addr_reg;
3895         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3896         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3897
3898         /* Nullable case */
3899         MONO_START_BB (cfg, is_nullable_bb);
3900
3901         {
3902                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3903                 MonoInst *unbox_call;
3904                 MonoMethodSignature *unbox_sig;
3905                 MonoInst *var;
3906
3907                 var = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
3908
3909                 unbox_sig = mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3910                 unbox_sig->ret = &klass->byval_arg;
3911                 unbox_sig->param_count = 1;
3912                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3913                 unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3914
3915                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3916                 addr->dreg = addr_reg;
3917         }
3918
3919         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3920
3921         /* End */
3922         MONO_START_BB (cfg, end_bb);
3923
3924         /* LDOBJ */
3925         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3926
3927         *out_cbb = cfg->cbb;
3928
3929         return ins;
3930 }
3931
3932 /*
3933  * Returns NULL and set the cfg exception on error.
3934  */
3935 static MonoInst*
3936 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3937 {
3938         MonoInst *iargs [2];
3939         void *alloc_ftn;
3940
3941         if (context_used) {
3942                 MonoInst *data;
3943                 int rgctx_info;
3944                 MonoInst *iargs [2];
3945
3946                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box);
3947
3948                 if (cfg->opt & MONO_OPT_SHARED)
3949                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3950                 else
3951                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3952                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3953
3954                 if (cfg->opt & MONO_OPT_SHARED) {
3955                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3956                         iargs [1] = data;
3957                         alloc_ftn = mono_object_new;
3958                 } else {
3959                         iargs [0] = data;
3960                         alloc_ftn = mono_object_new_specific;
3961                 }
3962
3963                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED))
3964                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3965
3966                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3967         }
3968
3969         if (cfg->opt & MONO_OPT_SHARED) {
3970                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3971                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3972
3973                 alloc_ftn = mono_object_new;
3974         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
3975                 /* This happens often in argument checking code, eg. throw new FooException... */
3976                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3977                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3978                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
3979         } else {
3980                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3981                 MonoMethod *managed_alloc = NULL;
3982                 gboolean pass_lw;
3983
3984                 if (!vtable) {
3985                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3986                         cfg->exception_ptr = klass;
3987                         return NULL;
3988                 }
3989
3990 #ifndef MONO_CROSS_COMPILE
3991                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box);
3992 #endif
3993
3994                 if (managed_alloc) {
3995                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3996                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3997                 }
3998                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
3999                 if (pass_lw) {
4000                         guint32 lw = vtable->klass->instance_size;
4001                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4002                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4003                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4004                 }
4005                 else {
4006                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4007                 }
4008         }
4009
4010         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4011 }
4012
4013 /*
4014  * Returns NULL and set the cfg exception on error.
4015  */
4016 static MonoInst*
4017 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used, MonoBasicBlock **out_cbb)
4018 {
4019         MonoInst *alloc, *ins;
4020
4021         *out_cbb = cfg->cbb;
4022
4023         if (mono_class_is_nullable (klass)) {
4024                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4025
4026                 if (context_used) {
4027                         /* FIXME: What if the class is shared?  We might not
4028                            have to get the method address from the RGCTX. */
4029                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4030                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4031                         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4032
4033                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4034                 } else {
4035                         gboolean pass_vtable, pass_mrgctx;
4036                         MonoInst *rgctx_arg = NULL;
4037
4038                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4039                         g_assert (!pass_mrgctx);
4040
4041                         if (pass_vtable) {
4042                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4043
4044                                 g_assert (vtable);
4045                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4046                         }
4047
4048                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4049                 }
4050         }
4051
4052         if (mini_is_gsharedvt_klass (cfg, klass)) {
4053                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4054                 MonoInst *res, *is_ref, *src_var, *addr;
4055                 int addr_reg, dreg;
4056
4057                 dreg = alloc_ireg (cfg);
4058
4059                 NEW_BBLOCK (cfg, is_ref_bb);
4060                 NEW_BBLOCK (cfg, is_nullable_bb);
4061                 NEW_BBLOCK (cfg, end_bb);
4062                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4063                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 1);
4064                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4065
4066                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 2);
4067                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4068
4069                 /* Non-ref case */
4070                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4071                 if (!alloc)
4072                         return NULL;
4073                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4074                 ins->opcode = OP_STOREV_MEMBASE;
4075
4076                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4077                 res->type = STACK_OBJ;
4078                 res->klass = klass;
4079                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4080
4081                 /* Ref case */
4082                 MONO_START_BB (cfg, is_ref_bb);
4083                 addr_reg = alloc_ireg (cfg);
4084
4085                 /* val is a vtype, so has to load the value manually */
4086                 src_var = get_vreg_to_inst (cfg, val->dreg);
4087                 if (!src_var)
4088                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4089                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4090                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4091                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4092
4093                 /* Nullable case */
4094                 MONO_START_BB (cfg, is_nullable_bb);
4095
4096                 {
4097                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4098                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4099                         MonoInst *box_call;
4100                         MonoMethodSignature *box_sig;
4101
4102                         /*
4103                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4104                          * construct that method at JIT time, so have to do things by hand.
4105                          */
4106                         box_sig = mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4107                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4108                         box_sig->param_count = 1;
4109                         box_sig->params [0] = &klass->byval_arg;
4110                         box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4111                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4112                         res->type = STACK_OBJ;
4113                         res->klass = klass;
4114                 }
4115
4116                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4117
4118                 MONO_START_BB (cfg, end_bb);
4119
4120                 *out_cbb = cfg->cbb;
4121
4122                 return res;
4123         } else {
4124                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4125                 if (!alloc)
4126                         return NULL;
4127
4128                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4129                 return alloc;
4130         }
4131 }
4132
4133
4134 static gboolean
4135 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4136 {
4137         int i;
4138         MonoGenericContainer *container;
4139         MonoGenericInst *ginst;
4140
4141         if (klass->generic_class) {
4142                 container = klass->generic_class->container_class->generic_container;
4143                 ginst = klass->generic_class->context.class_inst;
4144         } else if (klass->generic_container && context_used) {
4145                 container = klass->generic_container;
4146                 ginst = container->context.class_inst;
4147         } else {
4148                 return FALSE;
4149         }
4150
4151         for (i = 0; i < container->type_argc; ++i) {
4152                 MonoType *type;
4153                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4154                         continue;
4155                 type = ginst->type_argv [i];
4156                 if (mini_type_is_reference (cfg, type))
4157                         return TRUE;
4158         }
4159         return FALSE;
4160 }
4161
4162 #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)
4163
4164 static MonoInst*
4165 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args, MonoBasicBlock **out_bblock)
4166 {
4167         MonoMethod *mono_castclass;
4168         MonoInst *res;
4169
4170         mono_castclass = mono_marshal_get_castclass_with_cache ();
4171
4172         save_cast_details (cfg, klass, args [0]->dreg, TRUE, out_bblock);
4173         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4174         reset_cast_details (cfg);
4175         *out_bblock = cfg->cbb;
4176
4177         return res;
4178 }
4179
4180 static MonoInst*
4181 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass, MonoBasicBlock **out_bblock)
4182 {
4183         MonoInst *args [3];
4184         int idx;
4185
4186         /* obj */
4187         args [0] = obj;
4188
4189         /* klass */
4190         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4191
4192         /* inline cache*/
4193         if (cfg->compile_aot) {
4194                 /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4195                 cfg->castclass_cache_index ++;
4196                 idx = (cfg->method_index << 16) | cfg->castclass_cache_index;
4197                 EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4198         } else {
4199                 EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
4200         }
4201
4202         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4203
4204         return emit_castclass_with_cache (cfg, klass, args, out_bblock);
4205 }
4206
4207 /*
4208  * Returns NULL and set the cfg exception on error.
4209  */
4210 static MonoInst*
4211 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, guint8 *ip, MonoBasicBlock **out_bb, int *inline_costs)
4212 {
4213         MonoBasicBlock *is_null_bb;
4214         int obj_reg = src->dreg;
4215         int vtable_reg = alloc_preg (cfg);
4216         int context_used;
4217         MonoInst *klass_inst = NULL, *res;
4218         MonoBasicBlock *bblock;
4219
4220         *out_bb = cfg->cbb;
4221
4222         context_used = mini_class_check_context_used (cfg, klass);
4223
4224         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4225                 res = emit_castclass_with_cache_nonshared (cfg, src, klass, &bblock);
4226                 (*inline_costs) += 2;
4227                 *out_bb = cfg->cbb;
4228                 return res;
4229         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4230                 MonoMethod *mono_castclass;
4231                 MonoInst *iargs [1];
4232                 int costs;
4233
4234                 mono_castclass = mono_marshal_get_castclass (klass);
4235                 iargs [0] = src;
4236
4237                 save_cast_details (cfg, klass, src->dreg, TRUE, &bblock);
4238                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4239                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
4240                 reset_cast_details (cfg);
4241                 CHECK_CFG_EXCEPTION;
4242                 g_assert (costs > 0);
4243
4244                 cfg->real_offset += 5;
4245
4246                 (*inline_costs) += costs;
4247
4248                 *out_bb = cfg->cbb;
4249                 return src;
4250         }
4251
4252         if (context_used) {
4253                 MonoInst *args [3];
4254
4255                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4256                         MonoInst *cache_ins;
4257
4258                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4259
4260                         /* obj */
4261                         args [0] = src;
4262
4263                         /* klass - it's the second element of the cache entry*/
4264                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4265
4266                         /* cache */
4267                         args [2] = cache_ins;
4268
4269                         return emit_castclass_with_cache (cfg, klass, args, out_bb);
4270                 }
4271
4272                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4273         }
4274
4275         NEW_BBLOCK (cfg, is_null_bb);
4276
4277         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4278         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4279
4280         save_cast_details (cfg, klass, obj_reg, FALSE, NULL);
4281
4282         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4283                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4284                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4285         } else {
4286                 int klass_reg = alloc_preg (cfg);
4287
4288                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4289
4290                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4291                         /* the remoting code is broken, access the class for now */
4292                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4293                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4294                                 if (!vt) {
4295                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4296                                         cfg->exception_ptr = klass;
4297                                         return NULL;
4298                                 }
4299                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4300                         } else {
4301                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4302                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4303                         }
4304                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4305                 } else {
4306                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4307                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4308                 }
4309         }
4310
4311         MONO_START_BB (cfg, is_null_bb);
4312
4313         reset_cast_details (cfg);
4314
4315         *out_bb = cfg->cbb;
4316
4317         return src;
4318
4319 exception_exit:
4320         return NULL;
4321 }
4322
4323 /*
4324  * Returns NULL and set the cfg exception on error.
4325  */
4326 static MonoInst*
4327 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4328 {
4329         MonoInst *ins;
4330         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4331         int obj_reg = src->dreg;
4332         int vtable_reg = alloc_preg (cfg);
4333         int res_reg = alloc_ireg_ref (cfg);
4334         MonoInst *klass_inst = NULL;
4335
4336         if (context_used) {
4337                 MonoInst *args [3];
4338
4339                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4340                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4341                         MonoInst *cache_ins;
4342
4343                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4344
4345                         /* obj */
4346                         args [0] = src;
4347
4348                         /* klass - it's the second element of the cache entry*/
4349                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4350
4351                         /* cache */
4352                         args [2] = cache_ins;
4353
4354                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4355                 }
4356
4357                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4358         }
4359
4360         NEW_BBLOCK (cfg, is_null_bb);
4361         NEW_BBLOCK (cfg, false_bb);
4362         NEW_BBLOCK (cfg, end_bb);
4363
4364         /* Do the assignment at the beginning, so the other assignment can be if converted */
4365         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4366         ins->type = STACK_OBJ;
4367         ins->klass = klass;
4368
4369         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4370         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4371
4372         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4373
4374         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4375                 g_assert (!context_used);
4376                 /* the is_null_bb target simply copies the input register to the output */
4377                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4378         } else {
4379                 int klass_reg = alloc_preg (cfg);
4380
4381                 if (klass->rank) {
4382                         int rank_reg = alloc_preg (cfg);
4383                         int eclass_reg = alloc_preg (cfg);
4384
4385                         g_assert (!context_used);
4386                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4387                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4388                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4389                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4390                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4391                         if (klass->cast_class == mono_defaults.object_class) {
4392                                 int parent_reg = alloc_preg (cfg);
4393                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4394                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4395                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4396                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4397                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4398                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4399                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4400                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4401                         } else if (klass->cast_class == mono_defaults.enum_class) {
4402                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4403                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4404                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4405                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4406                         } else {
4407                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4408                                         /* Check that the object is a vector too */
4409                                         int bounds_reg = alloc_preg (cfg);
4410                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4411                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4412                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4413                                 }
4414
4415                                 /* the is_null_bb target simply copies the input register to the output */
4416                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4417                         }
4418                 } else if (mono_class_is_nullable (klass)) {
4419                         g_assert (!context_used);
4420                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4421                         /* the is_null_bb target simply copies the input register to the output */
4422                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4423                 } else {
4424                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4425                                 g_assert (!context_used);
4426                                 /* the remoting code is broken, access the class for now */
4427                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4428                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4429                                         if (!vt) {
4430                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4431                                                 cfg->exception_ptr = klass;
4432                                                 return NULL;
4433                                         }
4434                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4435                                 } else {
4436                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4437                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4438                                 }
4439                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4440                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4441                         } else {
4442                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4443                                 /* the is_null_bb target simply copies the input register to the output */
4444                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4445                         }
4446                 }
4447         }
4448
4449         MONO_START_BB (cfg, false_bb);
4450
4451         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4452         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4453
4454         MONO_START_BB (cfg, is_null_bb);
4455
4456         MONO_START_BB (cfg, end_bb);
4457
4458         return ins;
4459 }
4460
4461 static MonoInst*
4462 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4463 {
4464         /* This opcode takes as input an object reference and a class, and returns:
4465         0) if the object is an instance of the class,
4466         1) if the object is not instance of the class,
4467         2) if the object is a proxy whose type cannot be determined */
4468
4469         MonoInst *ins;
4470 #ifndef DISABLE_REMOTING
4471         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4472 #else
4473         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4474 #endif
4475         int obj_reg = src->dreg;
4476         int dreg = alloc_ireg (cfg);
4477         int tmp_reg;
4478 #ifndef DISABLE_REMOTING
4479         int klass_reg = alloc_preg (cfg);
4480 #endif
4481
4482         NEW_BBLOCK (cfg, true_bb);
4483         NEW_BBLOCK (cfg, false_bb);
4484         NEW_BBLOCK (cfg, end_bb);
4485 #ifndef DISABLE_REMOTING
4486         NEW_BBLOCK (cfg, false2_bb);
4487         NEW_BBLOCK (cfg, no_proxy_bb);
4488 #endif
4489
4490         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4491         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4492
4493         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4494 #ifndef DISABLE_REMOTING
4495                 NEW_BBLOCK (cfg, interface_fail_bb);
4496 #endif
4497
4498                 tmp_reg = alloc_preg (cfg);
4499                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4500 #ifndef DISABLE_REMOTING
4501                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4502                 MONO_START_BB (cfg, interface_fail_bb);
4503                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4504
4505                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4506
4507                 tmp_reg = alloc_preg (cfg);
4508                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4509                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4510                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4511 #else
4512                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4513 #endif
4514         } else {
4515 #ifndef DISABLE_REMOTING
4516                 tmp_reg = alloc_preg (cfg);
4517                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4518                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4519
4520                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4521                 tmp_reg = alloc_preg (cfg);
4522                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4523                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4524
4525                 tmp_reg = alloc_preg (cfg);
4526                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4527                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4528                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4529
4530                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4531                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4532
4533                 MONO_START_BB (cfg, no_proxy_bb);
4534
4535                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4536 #else
4537                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4538 #endif
4539         }
4540
4541         MONO_START_BB (cfg, false_bb);
4542
4543         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4544         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4545
4546 #ifndef DISABLE_REMOTING
4547         MONO_START_BB (cfg, false2_bb);
4548
4549         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4550         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4551 #endif
4552
4553         MONO_START_BB (cfg, true_bb);
4554
4555         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4556
4557         MONO_START_BB (cfg, end_bb);
4558
4559         /* FIXME: */
4560         MONO_INST_NEW (cfg, ins, OP_ICONST);
4561         ins->dreg = dreg;
4562         ins->type = STACK_I4;
4563
4564         return ins;
4565 }
4566
4567 static MonoInst*
4568 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4569 {
4570         /* This opcode takes as input an object reference and a class, and returns:
4571         0) if the object is an instance of the class,
4572         1) if the object is a proxy whose type cannot be determined
4573         an InvalidCastException exception is thrown otherwhise*/
4574
4575         MonoInst *ins;
4576 #ifndef DISABLE_REMOTING
4577         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4578 #else
4579         MonoBasicBlock *ok_result_bb;
4580 #endif
4581         int obj_reg = src->dreg;
4582         int dreg = alloc_ireg (cfg);
4583         int tmp_reg = alloc_preg (cfg);
4584
4585 #ifndef DISABLE_REMOTING
4586         int klass_reg = alloc_preg (cfg);
4587         NEW_BBLOCK (cfg, end_bb);
4588 #endif
4589
4590         NEW_BBLOCK (cfg, ok_result_bb);
4591
4592         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4593         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4594
4595         save_cast_details (cfg, klass, obj_reg, FALSE, NULL);
4596
4597         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4598 #ifndef DISABLE_REMOTING
4599                 NEW_BBLOCK (cfg, interface_fail_bb);
4600
4601                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4602                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4603                 MONO_START_BB (cfg, interface_fail_bb);
4604                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4605
4606                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4607
4608                 tmp_reg = alloc_preg (cfg);
4609                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4610                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4611                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4612
4613                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4614                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4615 #else
4616                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4617                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4618                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4619 #endif
4620         } else {
4621 #ifndef DISABLE_REMOTING
4622                 NEW_BBLOCK (cfg, no_proxy_bb);
4623
4624                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4625                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4626                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4627
4628                 tmp_reg = alloc_preg (cfg);
4629                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4630                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4631
4632                 tmp_reg = alloc_preg (cfg);
4633                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4634                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4635                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4636
4637                 NEW_BBLOCK (cfg, fail_1_bb);
4638
4639                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4640
4641                 MONO_START_BB (cfg, fail_1_bb);
4642
4643                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4644                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4645
4646                 MONO_START_BB (cfg, no_proxy_bb);
4647
4648                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4649 #else
4650                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4651 #endif
4652         }
4653
4654         MONO_START_BB (cfg, ok_result_bb);
4655
4656         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4657
4658 #ifndef DISABLE_REMOTING
4659         MONO_START_BB (cfg, end_bb);
4660 #endif
4661
4662         /* FIXME: */
4663         MONO_INST_NEW (cfg, ins, OP_ICONST);
4664         ins->dreg = dreg;
4665         ins->type = STACK_I4;
4666
4667         return ins;
4668 }
4669
4670 static G_GNUC_UNUSED MonoInst*
4671 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4672 {
4673         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4674         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4675         gboolean is_i4 = TRUE;
4676
4677         switch (enum_type->type) {
4678         case MONO_TYPE_I8:
4679         case MONO_TYPE_U8:
4680 #if SIZEOF_REGISTER == 8
4681         case MONO_TYPE_I:
4682         case MONO_TYPE_U:
4683 #endif
4684                 is_i4 = FALSE;
4685                 break;
4686         }
4687
4688         {
4689                 MonoInst *load, *and, *cmp, *ceq;
4690                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4691                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4692                 int dest_reg = alloc_ireg (cfg);
4693
4694                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4695                 EMIT_NEW_BIALU (cfg, and, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4696                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4697                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4698
4699                 ceq->type = STACK_I4;
4700
4701                 if (!is_i4) {
4702                         load = mono_decompose_opcode (cfg, load);
4703                         and = mono_decompose_opcode (cfg, and);
4704                         cmp = mono_decompose_opcode (cfg, cmp);
4705                         ceq = mono_decompose_opcode (cfg, ceq);
4706                 }
4707
4708                 return ceq;
4709         }
4710 }
4711
4712 /*
4713  * Returns NULL and set the cfg exception on error.
4714  */
4715 static G_GNUC_UNUSED MonoInst*
4716 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual)
4717 {
4718         MonoInst *ptr;
4719         int dreg;
4720         gpointer trampoline;
4721         MonoInst *obj, *method_ins, *tramp_ins;
4722         MonoDomain *domain;
4723         guint8 **code_slot;
4724
4725         // FIXME reenable optimisation for virtual case
4726         if (virtual)
4727                 return NULL;
4728
4729         if (virtual) {
4730                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
4731                 g_assert (invoke);
4732
4733                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
4734                         return NULL;
4735         }
4736
4737         obj = handle_alloc (cfg, klass, FALSE, 0);
4738         if (!obj)
4739                 return NULL;
4740
4741         /* Inline the contents of mono_delegate_ctor */
4742
4743         /* Set target field */
4744         /* Optimize away setting of NULL target */
4745         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
4746                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4747                 if (cfg->gen_write_barriers) {
4748                         dreg = alloc_preg (cfg);
4749                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4750                         emit_write_barrier (cfg, ptr, target);
4751                 }
4752         }
4753
4754         /* Set method field */
4755         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4756         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4757
4758         /*
4759          * To avoid looking up the compiled code belonging to the target method
4760          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4761          * store it, and we fill it after the method has been compiled.
4762          */
4763         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4764                 MonoInst *code_slot_ins;
4765
4766                 if (context_used) {
4767                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4768                 } else {
4769                         domain = mono_domain_get ();
4770                         mono_domain_lock (domain);
4771                         if (!domain_jit_info (domain)->method_code_hash)
4772                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4773                         code_slot = g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4774                         if (!code_slot) {
4775                                 code_slot = mono_domain_alloc0 (domain, sizeof (gpointer));
4776                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4777                         }
4778                         mono_domain_unlock (domain);
4779
4780                         if (cfg->compile_aot)
4781                                 EMIT_NEW_AOTCONST (cfg, code_slot_ins, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4782                         else
4783                                 EMIT_NEW_PCONST (cfg, code_slot_ins, code_slot);
4784                 }
4785                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4786         }
4787
4788         if (cfg->compile_aot) {
4789                 MonoDelegateClassMethodPair *del_tramp;
4790
4791                 del_tramp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4792                 del_tramp->klass = klass;
4793                 del_tramp->method = context_used ? NULL : method;
4794                 del_tramp->virtual = virtual;
4795                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4796         } else {
4797                 if (virtual)
4798                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4799                 else
4800                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4801                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4802         }
4803
4804         /* Set invoke_impl field */
4805         if (virtual) {
4806                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4807         } else {
4808                 dreg = alloc_preg (cfg);
4809                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4810                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4811
4812                 dreg = alloc_preg (cfg);
4813                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4814                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4815         }
4816
4817         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4818
4819         return obj;
4820 }
4821
4822 static MonoInst*
4823 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4824 {
4825         MonoJitICallInfo *info;
4826
4827         /* Need to register the icall so it gets an icall wrapper */
4828         info = mono_get_array_new_va_icall (rank);
4829
4830         cfg->flags |= MONO_CFG_HAS_VARARGS;
4831
4832         /* mono_array_new_va () needs a vararg calling convention */
4833         cfg->disable_llvm = TRUE;
4834
4835         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4836         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4837 }
4838
4839 /*
4840  * handle_constrained_gsharedvt_call:
4841  *
4842  *   Handle constrained calls where the receiver is a gsharedvt type.
4843  * Return the instruction representing the call. Set the cfg exception on failure.
4844  */
4845 static MonoInst*
4846 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_call,
4847                                                                    gboolean *ref_emit_widen, MonoBasicBlock **ref_bblock)
4848 {
4849         MonoInst *ins = NULL;
4850         MonoBasicBlock *bblock = *ref_bblock;
4851         gboolean emit_widen = *ref_emit_widen;
4852
4853         /*
4854          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4855          * 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
4856          * pack the arguments into an array, and do the rest of the work in in an icall.
4857          */
4858         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4859                 (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 (cfg, fsig->ret)) &&
4860                 (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 (cfg, fsig->params [0]))))) {
4861                 MonoInst *args [16];
4862
4863                 /*
4864                  * This case handles calls to
4865                  * - object:ToString()/Equals()/GetHashCode(),
4866                  * - System.IComparable<T>:CompareTo()
4867                  * - System.IEquatable<T>:Equals ()
4868                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4869                  */
4870
4871                 args [0] = sp [0];
4872                 if (mono_method_check_context_used (cmethod))
4873                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4874                 else
4875                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4876                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_call), constrained_call, MONO_RGCTX_INFO_KLASS);
4877
4878                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4879                 if (fsig->hasthis && fsig->param_count) {
4880                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4881                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4882                         ins->dreg = alloc_preg (cfg);
4883                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4884                         MONO_ADD_INS (cfg->cbb, ins);
4885                         args [4] = ins;
4886
4887                         if (mini_is_gsharedvt_type (cfg, fsig->params [0])) {
4888                                 int addr_reg;
4889
4890                                 args [3] = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4891
4892                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4893                                 addr_reg = ins->dreg;
4894                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4895                         } else {
4896                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4897                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4898                         }
4899                 } else {
4900                         EMIT_NEW_ICONST (cfg, args [3], 0);
4901                         EMIT_NEW_ICONST (cfg, args [4], 0);
4902                 }
4903                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4904                 emit_widen = FALSE;
4905
4906                 if (mini_is_gsharedvt_type (cfg, fsig->ret)) {
4907                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins, &bblock);
4908                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
4909                         MonoInst *add;
4910
4911                         /* Unbox */
4912                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4913                         MONO_ADD_INS (cfg->cbb, add);
4914                         /* Load value */
4915                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4916                         MONO_ADD_INS (cfg->cbb, ins);
4917                         /* ins represents the call result */
4918                 }
4919         } else {
4920                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4921         }
4922
4923         *ref_emit_widen = emit_widen;
4924         *ref_bblock = bblock;
4925
4926         return ins;
4927
4928  exception_exit:
4929         return NULL;
4930 }
4931
4932 static void
4933 mono_emit_load_got_addr (MonoCompile *cfg)
4934 {
4935         MonoInst *getaddr, *dummy_use;
4936
4937         if (!cfg->got_var || cfg->got_var_allocated)
4938                 return;
4939
4940         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4941         getaddr->cil_code = cfg->header->code;
4942         getaddr->dreg = cfg->got_var->dreg;
4943
4944         /* Add it to the start of the first bblock */
4945         if (cfg->bb_entry->code) {
4946                 getaddr->next = cfg->bb_entry->code;
4947                 cfg->bb_entry->code = getaddr;
4948         }
4949         else
4950                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4951
4952         cfg->got_var_allocated = TRUE;
4953
4954         /*
4955          * Add a dummy use to keep the got_var alive, since real uses might
4956          * only be generated by the back ends.
4957          * Add it to end_bblock, so the variable's lifetime covers the whole
4958          * method.
4959          * It would be better to make the usage of the got var explicit in all
4960          * cases when the backend needs it (i.e. calls, throw etc.), so this
4961          * wouldn't be needed.
4962          */
4963         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4964         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4965 }
4966
4967 static int inline_limit;
4968 static gboolean inline_limit_inited;
4969
4970 static gboolean
4971 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4972 {
4973         MonoMethodHeaderSummary header;
4974         MonoVTable *vtable;
4975 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4976         MonoMethodSignature *sig = mono_method_signature (method);
4977         int i;
4978 #endif
4979
4980         if (cfg->disable_inline)
4981                 return FALSE;
4982         if (cfg->generic_sharing_context)
4983                 return FALSE;
4984
4985         if (cfg->inline_depth > 10)
4986                 return FALSE;
4987
4988 #ifdef MONO_ARCH_HAVE_LMF_OPS
4989         if (((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4990                  (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) &&
4991             !MONO_TYPE_ISSTRUCT (signature->ret) && !mini_class_is_system_array (method->klass))
4992                 return TRUE;
4993 #endif
4994
4995
4996         if (!mono_method_get_header_summary (method, &header))
4997                 return FALSE;
4998
4999         /*runtime, icall and pinvoke are checked by summary call*/
5000         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5001             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5002             (mono_class_is_marshalbyref (method->klass)) ||
5003             header.has_clauses)
5004                 return FALSE;
5005
5006         /* also consider num_locals? */
5007         /* Do the size check early to avoid creating vtables */
5008         if (!inline_limit_inited) {
5009                 if (g_getenv ("MONO_INLINELIMIT"))
5010                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5011                 else
5012                         inline_limit = INLINE_LENGTH_LIMIT;
5013                 inline_limit_inited = TRUE;
5014         }
5015         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5016                 return FALSE;
5017
5018         /*
5019          * if we can initialize the class of the method right away, we do,
5020          * otherwise we don't allow inlining if the class needs initialization,
5021          * since it would mean inserting a call to mono_runtime_class_init()
5022          * inside the inlined code
5023          */
5024         if (!(cfg->opt & MONO_OPT_SHARED)) {
5025                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5026                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5027                         vtable = mono_class_vtable (cfg->domain, method->klass);
5028                         if (!vtable)
5029                                 return FALSE;
5030                         if (!cfg->compile_aot)
5031                                 mono_runtime_class_init (vtable);
5032                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5033                         if (cfg->run_cctors && method->klass->has_cctor) {
5034                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5035                                 if (!method->klass->runtime_info)
5036                                         /* No vtable created yet */
5037                                         return FALSE;
5038                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5039                                 if (!vtable)
5040                                         return FALSE;
5041                                 /* This makes so that inline cannot trigger */
5042                                 /* .cctors: too many apps depend on them */
5043                                 /* running with a specific order... */
5044                                 if (! vtable->initialized)
5045                                         return FALSE;
5046                                 mono_runtime_class_init (vtable);
5047                         }
5048                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5049                         if (!method->klass->runtime_info)
5050                                 /* No vtable created yet */
5051                                 return FALSE;
5052                         vtable = mono_class_vtable (cfg->domain, method->klass);
5053                         if (!vtable)
5054                                 return FALSE;
5055                         if (!vtable->initialized)
5056                                 return FALSE;
5057                 }
5058         } else {
5059                 /*
5060                  * If we're compiling for shared code
5061                  * the cctor will need to be run at aot method load time, for example,
5062                  * or at the end of the compilation of the inlining method.
5063                  */
5064                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5065                         return FALSE;
5066         }
5067
5068         /*
5069          * CAS - do not inline methods with declarative security
5070          * Note: this has to be before any possible return TRUE;
5071          */
5072         if (mono_security_method_has_declsec (method))
5073                 return FALSE;
5074
5075 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5076         if (mono_arch_is_soft_float ()) {
5077                 /* FIXME: */
5078                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5079                         return FALSE;
5080                 for (i = 0; i < sig->param_count; ++i)
5081                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5082                                 return FALSE;
5083         }
5084 #endif
5085
5086         if (g_list_find (cfg->dont_inline, method))
5087                 return FALSE;
5088
5089         return TRUE;
5090 }
5091
5092 static gboolean
5093 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5094 {
5095         if (!cfg->compile_aot) {
5096                 g_assert (vtable);
5097                 if (vtable->initialized)
5098                         return FALSE;
5099         }
5100
5101         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5102                 if (cfg->method == method)
5103                         return FALSE;
5104         }
5105
5106         if (!mono_class_needs_cctor_run (klass, method))
5107                 return FALSE;
5108
5109         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5110                 /* The initialization is already done before the method is called */
5111                 return FALSE;
5112
5113         return TRUE;
5114 }
5115
5116 static MonoInst*
5117 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5118 {
5119         MonoInst *ins;
5120         guint32 size;
5121         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5122         int context_used;
5123
5124         if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
5125                 size = -1;
5126         } else {
5127                 mono_class_init (klass);
5128                 size = mono_class_array_element_size (klass);
5129         }
5130
5131         mult_reg = alloc_preg (cfg);
5132         array_reg = arr->dreg;
5133         index_reg = index->dreg;
5134
5135 #if SIZEOF_REGISTER == 8
5136         /* The array reg is 64 bits but the index reg is only 32 */
5137         if (COMPILE_LLVM (cfg)) {
5138                 /* Not needed */
5139                 index2_reg = index_reg;
5140         } else {
5141                 index2_reg = alloc_preg (cfg);
5142                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5143         }
5144 #else
5145         if (index->type == STACK_I8) {
5146                 index2_reg = alloc_preg (cfg);
5147                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5148         } else {
5149                 index2_reg = index_reg;
5150         }
5151 #endif
5152
5153         if (bcheck)
5154                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5155
5156 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5157         if (size == 1 || size == 2 || size == 4 || size == 8) {
5158                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5159
5160                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5161                 ins->klass = mono_class_get_element_class (klass);
5162                 ins->type = STACK_MP;
5163
5164                 return ins;
5165         }
5166 #endif
5167
5168         add_reg = alloc_ireg_mp (cfg);
5169
5170         if (size == -1) {
5171                 MonoInst *rgctx_ins;
5172
5173                 /* gsharedvt */
5174                 g_assert (cfg->generic_sharing_context);
5175                 context_used = mini_class_check_context_used (cfg, klass);
5176                 g_assert (context_used);
5177                 rgctx_ins = emit_get_gsharedvt_info (cfg, &klass->byval_arg, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5178                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5179         } else {
5180                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5181         }
5182         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5183         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5184         ins->klass = mono_class_get_element_class (klass);
5185         ins->type = STACK_MP;
5186         MONO_ADD_INS (cfg->cbb, ins);
5187
5188         return ins;
5189 }
5190
5191 #ifndef MONO_ARCH_EMULATE_MUL_DIV
5192 static MonoInst*
5193 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5194 {
5195         int bounds_reg = alloc_preg (cfg);
5196         int add_reg = alloc_ireg_mp (cfg);
5197         int mult_reg = alloc_preg (cfg);
5198         int mult2_reg = alloc_preg (cfg);
5199         int low1_reg = alloc_preg (cfg);
5200         int low2_reg = alloc_preg (cfg);
5201         int high1_reg = alloc_preg (cfg);
5202         int high2_reg = alloc_preg (cfg);
5203         int realidx1_reg = alloc_preg (cfg);
5204         int realidx2_reg = alloc_preg (cfg);
5205         int sum_reg = alloc_preg (cfg);
5206         int index1, index2, tmpreg;
5207         MonoInst *ins;
5208         guint32 size;
5209
5210         mono_class_init (klass);
5211         size = mono_class_array_element_size (klass);
5212
5213         index1 = index_ins1->dreg;
5214         index2 = index_ins2->dreg;
5215
5216 #if SIZEOF_REGISTER == 8
5217         /* The array reg is 64 bits but the index reg is only 32 */
5218         if (COMPILE_LLVM (cfg)) {
5219                 /* Not needed */
5220         } else {
5221                 tmpreg = alloc_preg (cfg);
5222                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5223                 index1 = tmpreg;
5224                 tmpreg = alloc_preg (cfg);
5225                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5226                 index2 = tmpreg;
5227         }
5228 #else
5229         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5230         tmpreg = -1;
5231 #endif
5232
5233         /* range checking */
5234         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5235                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5236
5237         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5238                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5239         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5240         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5241                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5242         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5243         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5244
5245         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5246                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5247         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5248         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5249                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5250         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5251         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5252
5253         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5254         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5255         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5256         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5257         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5258
5259         ins->type = STACK_MP;
5260         ins->klass = klass;
5261         MONO_ADD_INS (cfg->cbb, ins);
5262
5263         return ins;
5264 }
5265 #endif
5266
5267 static MonoInst*
5268 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5269 {
5270         int rank;
5271         MonoInst *addr;
5272         MonoMethod *addr_method;
5273         int element_size;
5274
5275         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5276
5277         if (rank == 1)
5278                 return mini_emit_ldelema_1_ins (cfg, cmethod->klass->element_class, sp [0], sp [1], TRUE);
5279
5280 #ifndef MONO_ARCH_EMULATE_MUL_DIV
5281         /* emit_ldelema_2 depends on OP_LMUL */
5282         if (rank == 2 && (cfg->opt & MONO_OPT_INTRINS)) {
5283                 return mini_emit_ldelema_2_ins (cfg, cmethod->klass->element_class, sp [0], sp [1], sp [2]);
5284         }
5285 #endif
5286
5287         element_size = mono_class_array_element_size (cmethod->klass->element_class);
5288         addr_method = mono_marshal_get_array_address (rank, element_size);
5289         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5290
5291         return addr;
5292 }
5293
5294 static MonoBreakPolicy
5295 always_insert_breakpoint (MonoMethod *method)
5296 {
5297         return MONO_BREAK_POLICY_ALWAYS;
5298 }
5299
5300 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5301
5302 /**
5303  * mono_set_break_policy:
5304  * policy_callback: the new callback function
5305  *
5306  * Allow embedders to decide wherther to actually obey breakpoint instructions
5307  * (both break IL instructions and Debugger.Break () method calls), for example
5308  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5309  * untrusted or semi-trusted code.
5310  *
5311  * @policy_callback will be called every time a break point instruction needs to
5312  * be inserted with the method argument being the method that calls Debugger.Break()
5313  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5314  * if it wants the breakpoint to not be effective in the given method.
5315  * #MONO_BREAK_POLICY_ALWAYS is the default.
5316  */
5317 void
5318 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5319 {
5320         if (policy_callback)
5321                 break_policy_func = policy_callback;
5322         else
5323                 break_policy_func = always_insert_breakpoint;
5324 }
5325
5326 static gboolean
5327 should_insert_brekpoint (MonoMethod *method) {
5328         switch (break_policy_func (method)) {
5329         case MONO_BREAK_POLICY_ALWAYS:
5330                 return TRUE;
5331         case MONO_BREAK_POLICY_NEVER:
5332                 return FALSE;
5333         case MONO_BREAK_POLICY_ON_DBG:
5334                 g_warning ("mdb no longer supported");
5335                 return FALSE;
5336         default:
5337                 g_warning ("Incorrect value returned from break policy callback");
5338                 return FALSE;
5339         }
5340 }
5341
5342 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5343 static MonoInst*
5344 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5345 {
5346         MonoInst *addr, *store, *load;
5347         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5348
5349         /* the bounds check is already done by the callers */
5350         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5351         if (is_set) {
5352                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5353                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5354                 if (mini_type_is_reference (cfg, fsig->params [2]))
5355                         emit_write_barrier (cfg, addr, load);
5356         } else {
5357                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5358                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5359         }
5360         return store;
5361 }
5362
5363
5364 static gboolean
5365 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5366 {
5367         return mini_type_is_reference (cfg, &klass->byval_arg);
5368 }
5369
5370 static MonoInst*
5371 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5372 {
5373         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5374                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5375                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5376                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5377                 MonoInst *iargs [3];
5378
5379                 if (!helper->slot)
5380                         mono_class_setup_vtable (obj_array);
5381                 g_assert (helper->slot);
5382
5383                 if (sp [0]->type != STACK_OBJ)
5384                         return NULL;
5385                 if (sp [2]->type != STACK_OBJ)
5386                         return NULL;
5387
5388                 iargs [2] = sp [2];
5389                 iargs [1] = sp [1];
5390                 iargs [0] = sp [0];
5391
5392                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5393         } else {
5394                 MonoInst *ins;
5395
5396                 if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
5397                         MonoInst *addr;
5398
5399                         // FIXME-VT: OP_ICONST optimization
5400                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5401                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5402                         ins->opcode = OP_STOREV_MEMBASE;
5403                 } else if (sp [1]->opcode == OP_ICONST) {
5404                         int array_reg = sp [0]->dreg;
5405                         int index_reg = sp [1]->dreg;
5406                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5407
5408                         if (safety_checks)
5409                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5410                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5411                 } else {
5412                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5413                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5414                         if (generic_class_is_reference_type (cfg, klass))
5415                                 emit_write_barrier (cfg, addr, sp [2]);
5416                 }
5417                 return ins;
5418         }
5419 }
5420
5421 static MonoInst*
5422 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5423 {
5424         MonoClass *eklass;
5425
5426         if (is_set)
5427                 eklass = mono_class_from_mono_type (fsig->params [2]);
5428         else
5429                 eklass = mono_class_from_mono_type (fsig->ret);
5430
5431         if (is_set) {
5432                 return emit_array_store (cfg, eklass, args, FALSE);
5433         } else {
5434                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5435                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5436                 return ins;
5437         }
5438 }
5439
5440 static gboolean
5441 is_unsafe_mov_compatible (MonoClass *param_klass, MonoClass *return_klass)
5442 {
5443         uint32_t align;
5444
5445         //Only allow for valuetypes
5446         if (!param_klass->valuetype || !return_klass->valuetype)
5447                 return FALSE;
5448
5449         //That are blitable
5450         if (param_klass->has_references || return_klass->has_references)
5451                 return FALSE;
5452
5453         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5454         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5455                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)))
5456                 return FALSE;
5457
5458         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5459                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8)
5460                 return FALSE;
5461
5462         //And have the same size
5463         if (mono_class_value_size (param_klass, &align) != mono_class_value_size (return_klass, &align))
5464                 return FALSE;
5465         return TRUE;
5466 }
5467
5468 static MonoInst*
5469 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5470 {
5471         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5472         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5473
5474         //Valuetypes that are semantically equivalent
5475         if (is_unsafe_mov_compatible (param_klass, return_klass))
5476                 return args [0];
5477
5478         //Arrays of valuetypes that are semantically equivalent
5479         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (param_klass->element_class, return_klass->element_class))
5480                 return args [0];
5481
5482         return NULL;
5483 }
5484
5485 static MonoInst*
5486 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5487 {
5488 #ifdef MONO_ARCH_SIMD_INTRINSICS
5489         MonoInst *ins = NULL;
5490
5491         if (cfg->opt & MONO_OPT_SIMD) {
5492                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5493                 if (ins)
5494                         return ins;
5495         }
5496 #endif
5497
5498         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5499 }
5500
5501 static MonoInst*
5502 emit_memory_barrier (MonoCompile *cfg, int kind)
5503 {
5504         MonoInst *ins = NULL;
5505         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5506         MONO_ADD_INS (cfg->cbb, ins);
5507         ins->backend.memory_barrier_kind = kind;
5508
5509         return ins;
5510 }
5511
5512 static MonoInst*
5513 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5514 {
5515         MonoInst *ins = NULL;
5516         int opcode = 0;
5517
5518         /* The LLVM backend supports these intrinsics */
5519         if (cmethod->klass == mono_defaults.math_class) {
5520                 if (strcmp (cmethod->name, "Sin") == 0) {
5521                         opcode = OP_SIN;
5522                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5523                         opcode = OP_COS;
5524                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5525                         opcode = OP_SQRT;
5526                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5527                         opcode = OP_ABS;
5528                 }
5529
5530                 if (opcode && fsig->param_count == 1) {
5531                         MONO_INST_NEW (cfg, ins, opcode);
5532                         ins->type = STACK_R8;
5533                         ins->dreg = mono_alloc_freg (cfg);
5534                         ins->sreg1 = args [0]->dreg;
5535                         MONO_ADD_INS (cfg->cbb, ins);
5536                 }
5537
5538                 opcode = 0;
5539                 if (cfg->opt & MONO_OPT_CMOV) {
5540                         if (strcmp (cmethod->name, "Min") == 0) {
5541                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5542                                         opcode = OP_IMIN;
5543                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5544                                         opcode = OP_IMIN_UN;
5545                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5546                                         opcode = OP_LMIN;
5547                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5548                                         opcode = OP_LMIN_UN;
5549                         } else if (strcmp (cmethod->name, "Max") == 0) {
5550                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5551                                         opcode = OP_IMAX;
5552                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5553                                         opcode = OP_IMAX_UN;
5554                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5555                                         opcode = OP_LMAX;
5556                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5557                                         opcode = OP_LMAX_UN;
5558                         }
5559                 }
5560
5561                 if (opcode && fsig->param_count == 2) {
5562                         MONO_INST_NEW (cfg, ins, opcode);
5563                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5564                         ins->dreg = mono_alloc_ireg (cfg);
5565                         ins->sreg1 = args [0]->dreg;
5566                         ins->sreg2 = args [1]->dreg;
5567                         MONO_ADD_INS (cfg->cbb, ins);
5568                 }
5569         }
5570
5571         return ins;
5572 }
5573
5574 static MonoInst*
5575 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5576 {
5577         if (cmethod->klass == mono_defaults.array_class) {
5578                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5579                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5580                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5581                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5582                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5583                         return emit_array_unsafe_mov (cfg, fsig, args);
5584         }
5585
5586         return NULL;
5587 }
5588
5589 static MonoInst*
5590 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5591 {
5592         MonoInst *ins = NULL;
5593
5594         static MonoClass *runtime_helpers_class = NULL;
5595         if (! runtime_helpers_class)
5596                 runtime_helpers_class = mono_class_from_name (mono_defaults.corlib,
5597                         "System.Runtime.CompilerServices", "RuntimeHelpers");
5598
5599         if (cmethod->klass == mono_defaults.string_class) {
5600                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count == 2) {
5601                         int dreg = alloc_ireg (cfg);
5602                         int index_reg = alloc_preg (cfg);
5603                         int mult_reg = alloc_preg (cfg);
5604                         int add_reg = alloc_preg (cfg);
5605
5606 #if SIZEOF_REGISTER == 8
5607                         /* The array reg is 64 bits but the index reg is only 32 */
5608                         MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5609 #else
5610                         index_reg = args [1]->dreg;
5611 #endif
5612                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5613
5614 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5615                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5616                         add_reg = ins->dreg;
5617                         /* Avoid a warning */
5618                         mult_reg = 0;
5619                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5620                                                                    add_reg, 0);
5621 #else
5622                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5623                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5624                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5625                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5626 #endif
5627                         type_from_op (cfg, ins, NULL, NULL);
5628                         return ins;
5629                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count == 1) {
5630                         int dreg = alloc_ireg (cfg);
5631                         /* Decompose later to allow more optimizations */
5632                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5633                         ins->type = STACK_I4;
5634                         ins->flags |= MONO_INST_FAULT;
5635                         cfg->cbb->has_array_access = TRUE;
5636                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5637
5638                         return ins;
5639                 } else if (strcmp (cmethod->name, "InternalSetChar") == 0 && fsig->param_count == 3) {
5640                         int mult_reg = alloc_preg (cfg);
5641                         int add_reg = alloc_preg (cfg);
5642
5643                         /* The corlib functions check for oob already. */
5644                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, args [1]->dreg, 1);
5645                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5646                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, add_reg, MONO_STRUCT_OFFSET (MonoString, chars), args [2]->dreg);
5647                         return cfg->cbb->last_ins;
5648                 } else
5649                         return NULL;
5650         } else if (cmethod->klass == mono_defaults.object_class) {
5651
5652                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count == 1) {
5653                         int dreg = alloc_ireg_ref (cfg);
5654                         int vt_reg = alloc_preg (cfg);
5655                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5656                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
5657                         type_from_op (cfg, ins, NULL, NULL);
5658
5659                         return ins;
5660 #if !defined(MONO_ARCH_EMULATE_MUL_DIV)
5661                 } else if (strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
5662                         int dreg = alloc_ireg (cfg);
5663                         int t1 = alloc_ireg (cfg);
5664
5665                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
5666                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
5667                         ins->type = STACK_I4;
5668
5669                         return ins;
5670 #endif
5671                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
5672                         MONO_INST_NEW (cfg, ins, OP_NOP);
5673                         MONO_ADD_INS (cfg->cbb, ins);
5674                         return ins;
5675                 } else
5676                         return NULL;
5677         } else if (cmethod->klass == mono_defaults.array_class) {
5678                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count == 3 && !cfg->gsharedvt)
5679                         return emit_array_generic_access (cfg, fsig, args, FALSE);
5680                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count == 3 && !cfg->gsharedvt)
5681                         return emit_array_generic_access (cfg, fsig, args, TRUE);
5682
5683 #ifndef MONO_BIG_ARRAYS
5684                 /*
5685                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
5686                  * Array methods.
5687                  */
5688                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count == 2) ||
5689                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count == 2)) &&
5690                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
5691                         int dreg = alloc_ireg (cfg);
5692                         int bounds_reg = alloc_ireg_mp (cfg);
5693                         MonoBasicBlock *end_bb, *szarray_bb;
5694                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
5695
5696                         NEW_BBLOCK (cfg, end_bb);
5697                         NEW_BBLOCK (cfg, szarray_bb);
5698
5699                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
5700                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5701                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5702                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5703                         /* Non-szarray case */
5704                         if (get_length)
5705                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5706                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5707                         else
5708                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5709                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5710                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5711                         MONO_START_BB (cfg, szarray_bb);
5712                         /* Szarray case */
5713                         if (get_length)
5714                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5715                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5716                         else
5717                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5718                         MONO_START_BB (cfg, end_bb);
5719
5720                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5721                         ins->type = STACK_I4;
5722
5723                         return ins;
5724                 }
5725 #endif
5726
5727                 if (cmethod->name [0] != 'g')
5728                         return NULL;
5729
5730                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count == 1) {
5731                         int dreg = alloc_ireg (cfg);
5732                         int vtable_reg = alloc_preg (cfg);
5733                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5734                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5735                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5736                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5737                         type_from_op (cfg, ins, NULL, NULL);
5738
5739                         return ins;
5740                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count == 1) {
5741                         int dreg = alloc_ireg (cfg);
5742
5743                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5744                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5745                         type_from_op (cfg, ins, NULL, NULL);
5746
5747                         return ins;
5748                 } else
5749                         return NULL;
5750         } else if (cmethod->klass == runtime_helpers_class) {
5751
5752                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5753                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5754                         return ins;
5755                 } else
5756                         return NULL;
5757         } else if (cmethod->klass == mono_defaults.thread_class) {
5758                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5759                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5760                         MONO_ADD_INS (cfg->cbb, ins);
5761                         return ins;
5762                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5763                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5764                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5765                         guint32 opcode = 0;
5766                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
5767
5768                         if (fsig->params [0]->type == MONO_TYPE_I1)
5769                                 opcode = OP_LOADI1_MEMBASE;
5770                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5771                                 opcode = OP_LOADU1_MEMBASE;
5772                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5773                                 opcode = OP_LOADI2_MEMBASE;
5774                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5775                                 opcode = OP_LOADU2_MEMBASE;
5776                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5777                                 opcode = OP_LOADI4_MEMBASE;
5778                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5779                                 opcode = OP_LOADU4_MEMBASE;
5780                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5781                                 opcode = OP_LOADI8_MEMBASE;
5782                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5783                                 opcode = OP_LOADR4_MEMBASE;
5784                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5785                                 opcode = OP_LOADR8_MEMBASE;
5786                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5787                                 opcode = OP_LOAD_MEMBASE;
5788
5789                         if (opcode) {
5790                                 MONO_INST_NEW (cfg, ins, opcode);
5791                                 ins->inst_basereg = args [0]->dreg;
5792                                 ins->inst_offset = 0;
5793                                 MONO_ADD_INS (cfg->cbb, ins);
5794
5795                                 switch (fsig->params [0]->type) {
5796                                 case MONO_TYPE_I1:
5797                                 case MONO_TYPE_U1:
5798                                 case MONO_TYPE_I2:
5799                                 case MONO_TYPE_U2:
5800                                 case MONO_TYPE_I4:
5801                                 case MONO_TYPE_U4:
5802                                         ins->dreg = mono_alloc_ireg (cfg);
5803                                         ins->type = STACK_I4;
5804                                         break;
5805                                 case MONO_TYPE_I8:
5806                                 case MONO_TYPE_U8:
5807                                         ins->dreg = mono_alloc_lreg (cfg);
5808                                         ins->type = STACK_I8;
5809                                         break;
5810                                 case MONO_TYPE_I:
5811                                 case MONO_TYPE_U:
5812                                         ins->dreg = mono_alloc_ireg (cfg);
5813 #if SIZEOF_REGISTER == 8
5814                                         ins->type = STACK_I8;
5815 #else
5816                                         ins->type = STACK_I4;
5817 #endif
5818                                         break;
5819                                 case MONO_TYPE_R4:
5820                                 case MONO_TYPE_R8:
5821                                         ins->dreg = mono_alloc_freg (cfg);
5822                                         ins->type = STACK_R8;
5823                                         break;
5824                                 default:
5825                                         g_assert (mini_type_is_reference (cfg, fsig->params [0]));
5826                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5827                                         ins->type = STACK_OBJ;
5828                                         break;
5829                                 }
5830
5831                                 if (opcode == OP_LOADI8_MEMBASE)
5832                                         ins = mono_decompose_opcode (cfg, ins);
5833
5834                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
5835
5836                                 return ins;
5837                         }
5838                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5839                         guint32 opcode = 0;
5840                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
5841
5842                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5843                                 opcode = OP_STOREI1_MEMBASE_REG;
5844                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5845                                 opcode = OP_STOREI2_MEMBASE_REG;
5846                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5847                                 opcode = OP_STOREI4_MEMBASE_REG;
5848                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5849                                 opcode = OP_STOREI8_MEMBASE_REG;
5850                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5851                                 opcode = OP_STORER4_MEMBASE_REG;
5852                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5853                                 opcode = OP_STORER8_MEMBASE_REG;
5854                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5855                                 opcode = OP_STORE_MEMBASE_REG;
5856
5857                         if (opcode) {
5858                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
5859
5860                                 MONO_INST_NEW (cfg, ins, opcode);
5861                                 ins->sreg1 = args [1]->dreg;
5862                                 ins->inst_destbasereg = args [0]->dreg;
5863                                 ins->inst_offset = 0;
5864                                 MONO_ADD_INS (cfg->cbb, ins);
5865
5866                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5867                                         ins = mono_decompose_opcode (cfg, ins);
5868
5869                                 return ins;
5870                         }
5871                 }
5872         } else if (cmethod->klass == mono_defaults.monitor_class) {
5873 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
5874                 if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 1) {
5875                         MonoCallInst *call;
5876
5877                         if (COMPILE_LLVM (cfg)) {
5878                                 /*
5879                                  * Pass the argument normally, the LLVM backend will handle the
5880                                  * calling convention problems.
5881                                  */
5882                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
5883                         } else {
5884                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER,
5885                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
5886                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
5887                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
5888                         }
5889
5890                         return (MonoInst*)call;
5891 #if defined(MONO_ARCH_MONITOR_LOCK_TAKEN_REG)
5892                 } else if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 2) {
5893                         MonoCallInst *call;
5894
5895                         if (COMPILE_LLVM (cfg)) {
5896                                 /*
5897                                  * Pass the argument normally, the LLVM backend will handle the
5898                                  * calling convention problems.
5899                                  */
5900                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER_V4, NULL, helper_sig_monitor_enter_v4_trampoline_llvm, args);
5901                         } else {
5902                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER_V4,
5903                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
5904                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg, MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
5905                                 mono_call_inst_add_outarg_reg (cfg, call, args [1]->dreg, MONO_ARCH_MONITOR_LOCK_TAKEN_REG, FALSE);
5906                         }
5907
5908                         return (MonoInst*)call;
5909 #endif
5910                 } else if (strcmp (cmethod->name, "Exit") == 0 && fsig->param_count == 1) {
5911                         MonoCallInst *call;
5912
5913                         if (COMPILE_LLVM (cfg)) {
5914                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
5915                         } else {
5916                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT,
5917                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
5918                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
5919                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
5920                         }
5921
5922                         return (MonoInst*)call;
5923                 }
5924 #endif
5925         } else if (cmethod->klass->image == mono_defaults.corlib &&
5926                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5927                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5928                 ins = NULL;
5929
5930 #if SIZEOF_REGISTER == 8
5931                 if (strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5932                         if (mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5933                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5934                                 ins->dreg = mono_alloc_preg (cfg);
5935                                 ins->sreg1 = args [0]->dreg;
5936                                 ins->type = STACK_I8;
5937                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5938                                 MONO_ADD_INS (cfg->cbb, ins);
5939                         } else {
5940                                 MonoInst *load_ins;
5941
5942                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5943
5944                                 /* 64 bit reads are already atomic */
5945                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5946                                 load_ins->dreg = mono_alloc_preg (cfg);
5947                                 load_ins->inst_basereg = args [0]->dreg;
5948                                 load_ins->inst_offset = 0;
5949                                 load_ins->type = STACK_I8;
5950                                 MONO_ADD_INS (cfg->cbb, load_ins);
5951
5952                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5953
5954                                 ins = load_ins;
5955                         }
5956                 }
5957 #endif
5958
5959                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5960                         MonoInst *ins_iconst;
5961                         guint32 opcode = 0;
5962
5963                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5964                                 opcode = OP_ATOMIC_ADD_I4;
5965                                 cfg->has_atomic_add_i4 = TRUE;
5966                         }
5967 #if SIZEOF_REGISTER == 8
5968                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5969                                 opcode = OP_ATOMIC_ADD_I8;
5970 #endif
5971                         if (opcode) {
5972                                 if (!mono_arch_opcode_supported (opcode))
5973                                         return NULL;
5974                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5975                                 ins_iconst->inst_c0 = 1;
5976                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5977                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5978
5979                                 MONO_INST_NEW (cfg, ins, opcode);
5980                                 ins->dreg = mono_alloc_ireg (cfg);
5981                                 ins->inst_basereg = args [0]->dreg;
5982                                 ins->inst_offset = 0;
5983                                 ins->sreg2 = ins_iconst->dreg;
5984                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5985                                 MONO_ADD_INS (cfg->cbb, ins);
5986                         }
5987                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5988                         MonoInst *ins_iconst;
5989                         guint32 opcode = 0;
5990
5991                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5992                                 opcode = OP_ATOMIC_ADD_I4;
5993                                 cfg->has_atomic_add_i4 = TRUE;
5994                         }
5995 #if SIZEOF_REGISTER == 8
5996                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5997                                 opcode = OP_ATOMIC_ADD_I8;
5998 #endif
5999                         if (opcode) {
6000                                 if (!mono_arch_opcode_supported (opcode))
6001                                         return NULL;
6002                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6003                                 ins_iconst->inst_c0 = -1;
6004                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6005                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6006
6007                                 MONO_INST_NEW (cfg, ins, opcode);
6008                                 ins->dreg = mono_alloc_ireg (cfg);
6009                                 ins->inst_basereg = args [0]->dreg;
6010                                 ins->inst_offset = 0;
6011                                 ins->sreg2 = ins_iconst->dreg;
6012                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6013                                 MONO_ADD_INS (cfg->cbb, ins);
6014                         }
6015                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6016                         guint32 opcode = 0;
6017
6018                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6019                                 opcode = OP_ATOMIC_ADD_I4;
6020                                 cfg->has_atomic_add_i4 = TRUE;
6021                         }
6022 #if SIZEOF_REGISTER == 8
6023                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6024                                 opcode = OP_ATOMIC_ADD_I8;
6025 #endif
6026                         if (opcode) {
6027                                 if (!mono_arch_opcode_supported (opcode))
6028                                         return NULL;
6029                                 MONO_INST_NEW (cfg, ins, opcode);
6030                                 ins->dreg = mono_alloc_ireg (cfg);
6031                                 ins->inst_basereg = args [0]->dreg;
6032                                 ins->inst_offset = 0;
6033                                 ins->sreg2 = args [1]->dreg;
6034                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6035                                 MONO_ADD_INS (cfg->cbb, ins);
6036                         }
6037                 }
6038                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6039                         MonoInst *f2i = NULL, *i2f;
6040                         guint32 opcode, f2i_opcode, i2f_opcode;
6041                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6042                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6043
6044                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6045                             fsig->params [0]->type == MONO_TYPE_R4) {
6046                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6047                                 f2i_opcode = OP_MOVE_F_TO_I4;
6048                                 i2f_opcode = OP_MOVE_I4_TO_F;
6049                                 cfg->has_atomic_exchange_i4 = TRUE;
6050                         }
6051 #if SIZEOF_REGISTER == 8
6052                         else if (is_ref ||
6053                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6054                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6055                                  fsig->params [0]->type == MONO_TYPE_I) {
6056                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6057                                 f2i_opcode = OP_MOVE_F_TO_I8;
6058                                 i2f_opcode = OP_MOVE_I8_TO_F;
6059                         }
6060 #else
6061                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6062                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6063                                 cfg->has_atomic_exchange_i4 = TRUE;
6064                         }
6065 #endif
6066                         else
6067                                 return NULL;
6068
6069                         if (!mono_arch_opcode_supported (opcode))
6070                                 return NULL;
6071
6072                         if (is_float) {
6073                                 /* TODO: Decompose these opcodes instead of bailing here. */
6074                                 if (COMPILE_SOFT_FLOAT (cfg))
6075                                         return NULL;
6076
6077                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6078                                 f2i->dreg = mono_alloc_ireg (cfg);
6079                                 f2i->sreg1 = args [1]->dreg;
6080                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6081                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6082                                 MONO_ADD_INS (cfg->cbb, f2i);
6083                         }
6084
6085                         MONO_INST_NEW (cfg, ins, opcode);
6086                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6087                         ins->inst_basereg = args [0]->dreg;
6088                         ins->inst_offset = 0;
6089                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6090                         MONO_ADD_INS (cfg->cbb, ins);
6091
6092                         switch (fsig->params [0]->type) {
6093                         case MONO_TYPE_I4:
6094                                 ins->type = STACK_I4;
6095                                 break;
6096                         case MONO_TYPE_I8:
6097                                 ins->type = STACK_I8;
6098                                 break;
6099                         case MONO_TYPE_I:
6100 #if SIZEOF_REGISTER == 8
6101                                 ins->type = STACK_I8;
6102 #else
6103                                 ins->type = STACK_I4;
6104 #endif
6105                                 break;
6106                         case MONO_TYPE_R4:
6107                         case MONO_TYPE_R8:
6108                                 ins->type = STACK_R8;
6109                                 break;
6110                         default:
6111                                 g_assert (mini_type_is_reference (cfg, fsig->params [0]));
6112                                 ins->type = STACK_OBJ;
6113                                 break;
6114                         }
6115
6116                         if (is_float) {
6117                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6118                                 i2f->dreg = mono_alloc_freg (cfg);
6119                                 i2f->sreg1 = ins->dreg;
6120                                 i2f->type = STACK_R8;
6121                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6122                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6123                                 MONO_ADD_INS (cfg->cbb, i2f);
6124
6125                                 ins = i2f;
6126                         }
6127
6128                         if (cfg->gen_write_barriers && is_ref)
6129                                 emit_write_barrier (cfg, args [0], args [1]);
6130                 }
6131                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6132                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6133                         guint32 opcode, f2i_opcode, i2f_opcode;
6134                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [1]);
6135                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6136
6137                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6138                             fsig->params [1]->type == MONO_TYPE_R4) {
6139                                 opcode = OP_ATOMIC_CAS_I4;
6140                                 f2i_opcode = OP_MOVE_F_TO_I4;
6141                                 i2f_opcode = OP_MOVE_I4_TO_F;
6142                                 cfg->has_atomic_cas_i4 = TRUE;
6143                         }
6144 #if SIZEOF_REGISTER == 8
6145                         else if (is_ref ||
6146                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6147                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6148                                  fsig->params [1]->type == MONO_TYPE_I) {
6149                                 opcode = OP_ATOMIC_CAS_I8;
6150                                 f2i_opcode = OP_MOVE_F_TO_I8;
6151                                 i2f_opcode = OP_MOVE_I8_TO_F;
6152                         }
6153 #else
6154                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6155                                 opcode = OP_ATOMIC_CAS_I4;
6156                                 cfg->has_atomic_cas_i4 = TRUE;
6157                         }
6158 #endif
6159                         else
6160                                 return NULL;
6161
6162                         if (!mono_arch_opcode_supported (opcode))
6163                                 return NULL;
6164
6165                         if (is_float) {
6166                                 /* TODO: Decompose these opcodes instead of bailing here. */
6167                                 if (COMPILE_SOFT_FLOAT (cfg))
6168                                         return NULL;
6169
6170                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6171                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6172                                 f2i_new->sreg1 = args [1]->dreg;
6173                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6174                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6175                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6176
6177                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6178                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6179                                 f2i_cmp->sreg1 = args [2]->dreg;
6180                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6181                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6182                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6183                         }
6184
6185                         MONO_INST_NEW (cfg, ins, opcode);
6186                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6187                         ins->sreg1 = args [0]->dreg;
6188                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6189                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6190                         MONO_ADD_INS (cfg->cbb, ins);
6191
6192                         switch (fsig->params [0]->type) {
6193                         case MONO_TYPE_I4:
6194                                 ins->type = STACK_I4;
6195                                 break;
6196                         case MONO_TYPE_I8:
6197                                 ins->type = STACK_I8;
6198                                 break;
6199                         case MONO_TYPE_I:
6200 #if SIZEOF_REGISTER == 8
6201                                 ins->type = STACK_I8;
6202 #else
6203                                 ins->type = STACK_I4;
6204 #endif
6205                                 break;
6206                         case MONO_TYPE_R4:
6207                         case MONO_TYPE_R8:
6208                                 ins->type = STACK_R8;
6209                                 break;
6210                         default:
6211                                 g_assert (mini_type_is_reference (cfg, fsig->params [0]));
6212                                 ins->type = STACK_OBJ;
6213                                 break;
6214                         }
6215
6216                         if (is_float) {
6217                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6218                                 i2f->dreg = mono_alloc_freg (cfg);
6219                                 i2f->sreg1 = ins->dreg;
6220                                 i2f->type = STACK_R8;
6221                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6222                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6223                                 MONO_ADD_INS (cfg->cbb, i2f);
6224
6225                                 ins = i2f;
6226                         }
6227
6228                         if (cfg->gen_write_barriers && is_ref)
6229                                 emit_write_barrier (cfg, args [0], args [1]);
6230                 }
6231                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6232                          fsig->params [1]->type == MONO_TYPE_I4) {
6233                         MonoInst *cmp, *ceq;
6234
6235                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6236                                 return NULL;
6237
6238                         /* int32 r = CAS (location, value, comparand); */
6239                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6240                         ins->dreg = alloc_ireg (cfg);
6241                         ins->sreg1 = args [0]->dreg;
6242                         ins->sreg2 = args [1]->dreg;
6243                         ins->sreg3 = args [2]->dreg;
6244                         ins->type = STACK_I4;
6245                         MONO_ADD_INS (cfg->cbb, ins);
6246
6247                         /* bool result = r == comparand; */
6248                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6249                         cmp->sreg1 = ins->dreg;
6250                         cmp->sreg2 = args [2]->dreg;
6251                         cmp->type = STACK_I4;
6252                         MONO_ADD_INS (cfg->cbb, cmp);
6253
6254                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6255                         ceq->dreg = alloc_ireg (cfg);
6256                         ceq->type = STACK_I4;
6257                         MONO_ADD_INS (cfg->cbb, ceq);
6258
6259                         /* *success = result; */
6260                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6261
6262                         cfg->has_atomic_cas_i4 = TRUE;
6263                 }
6264                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6265                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6266
6267                 if (ins)
6268                         return ins;
6269         } else if (cmethod->klass->image == mono_defaults.corlib &&
6270                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6271                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6272                 ins = NULL;
6273
6274                 if (!strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6275                         guint32 opcode = 0;
6276                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6277                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6278
6279                         if (fsig->params [0]->type == MONO_TYPE_I1)
6280                                 opcode = OP_ATOMIC_LOAD_I1;
6281                         else if (fsig->params [0]->type == MONO_TYPE_U1 || fsig->params [0]->type == MONO_TYPE_BOOLEAN)
6282                                 opcode = OP_ATOMIC_LOAD_U1;
6283                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6284                                 opcode = OP_ATOMIC_LOAD_I2;
6285                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6286                                 opcode = OP_ATOMIC_LOAD_U2;
6287                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6288                                 opcode = OP_ATOMIC_LOAD_I4;
6289                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6290                                 opcode = OP_ATOMIC_LOAD_U4;
6291                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6292                                 opcode = OP_ATOMIC_LOAD_R4;
6293                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6294                                 opcode = OP_ATOMIC_LOAD_R8;
6295 #if SIZEOF_REGISTER == 8
6296                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_I)
6297                                 opcode = OP_ATOMIC_LOAD_I8;
6298                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U8 || fsig->params [0]->type == MONO_TYPE_U)
6299                                 opcode = OP_ATOMIC_LOAD_U8;
6300 #else
6301                         else if (fsig->params [0]->type == MONO_TYPE_I)
6302                                 opcode = OP_ATOMIC_LOAD_I4;
6303                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U)
6304                                 opcode = OP_ATOMIC_LOAD_U4;
6305 #endif
6306
6307                         if (opcode) {
6308                                 if (!mono_arch_opcode_supported (opcode))
6309                                         return NULL;
6310
6311                                 MONO_INST_NEW (cfg, ins, opcode);
6312                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6313                                 ins->sreg1 = args [0]->dreg;
6314                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6315                                 MONO_ADD_INS (cfg->cbb, ins);
6316
6317                                 switch (fsig->params [0]->type) {
6318                                 case MONO_TYPE_BOOLEAN:
6319                                 case MONO_TYPE_I1:
6320                                 case MONO_TYPE_U1:
6321                                 case MONO_TYPE_I2:
6322                                 case MONO_TYPE_U2:
6323                                 case MONO_TYPE_I4:
6324                                 case MONO_TYPE_U4:
6325                                         ins->type = STACK_I4;
6326                                         break;
6327                                 case MONO_TYPE_I8:
6328                                 case MONO_TYPE_U8:
6329                                         ins->type = STACK_I8;
6330                                         break;
6331                                 case MONO_TYPE_I:
6332                                 case MONO_TYPE_U:
6333 #if SIZEOF_REGISTER == 8
6334                                         ins->type = STACK_I8;
6335 #else
6336                                         ins->type = STACK_I4;
6337 #endif
6338                                         break;
6339                                 case MONO_TYPE_R4:
6340                                 case MONO_TYPE_R8:
6341                                         ins->type = STACK_R8;
6342                                         break;
6343                                 default:
6344                                         g_assert (mini_type_is_reference (cfg, fsig->params [0]));
6345                                         ins->type = STACK_OBJ;
6346                                         break;
6347                                 }
6348                         }
6349                 }
6350
6351                 if (!strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6352                         guint32 opcode = 0;
6353                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6354
6355                         if (fsig->params [0]->type == MONO_TYPE_I1)
6356                                 opcode = OP_ATOMIC_STORE_I1;
6357                         else if (fsig->params [0]->type == MONO_TYPE_U1 || fsig->params [0]->type == MONO_TYPE_BOOLEAN)
6358                                 opcode = OP_ATOMIC_STORE_U1;
6359                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6360                                 opcode = OP_ATOMIC_STORE_I2;
6361                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6362                                 opcode = OP_ATOMIC_STORE_U2;
6363                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6364                                 opcode = OP_ATOMIC_STORE_I4;
6365                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6366                                 opcode = OP_ATOMIC_STORE_U4;
6367                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6368                                 opcode = OP_ATOMIC_STORE_R4;
6369                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6370                                 opcode = OP_ATOMIC_STORE_R8;
6371 #if SIZEOF_REGISTER == 8
6372                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_I)
6373                                 opcode = OP_ATOMIC_STORE_I8;
6374                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U8 || fsig->params [0]->type == MONO_TYPE_U)
6375                                 opcode = OP_ATOMIC_STORE_U8;
6376 #else
6377                         else if (fsig->params [0]->type == MONO_TYPE_I)
6378                                 opcode = OP_ATOMIC_STORE_I4;
6379                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U)
6380                                 opcode = OP_ATOMIC_STORE_U4;
6381 #endif
6382
6383                         if (opcode) {
6384                                 if (!mono_arch_opcode_supported (opcode))
6385                                         return NULL;
6386
6387                                 MONO_INST_NEW (cfg, ins, opcode);
6388                                 ins->dreg = args [0]->dreg;
6389                                 ins->sreg1 = args [1]->dreg;
6390                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6391                                 MONO_ADD_INS (cfg->cbb, ins);
6392
6393                                 if (cfg->gen_write_barriers && is_ref)
6394                                         emit_write_barrier (cfg, args [0], args [1]);
6395                         }
6396                 }
6397
6398                 if (ins)
6399                         return ins;
6400         } else if (cmethod->klass->image == mono_defaults.corlib &&
6401                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6402                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6403                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6404                         if (should_insert_brekpoint (cfg->method)) {
6405                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6406                         } else {
6407                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6408                                 MONO_ADD_INS (cfg->cbb, ins);
6409                         }
6410                         return ins;
6411                 }
6412         } else if (cmethod->klass->image == mono_defaults.corlib &&
6413                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6414                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6415                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6416 #ifdef TARGET_WIN32
6417                         EMIT_NEW_ICONST (cfg, ins, 1);
6418 #else
6419                         EMIT_NEW_ICONST (cfg, ins, 0);
6420 #endif
6421                 }
6422         } else if (cmethod->klass == mono_defaults.math_class) {
6423                 /*
6424                  * There is general branchless code for Min/Max, but it does not work for
6425                  * all inputs:
6426                  * http://everything2.com/?node_id=1051618
6427                  */
6428         } else if ((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6429                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6430                    !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6431                    !strcmp (cmethod->klass->name, "Selector")) {
6432 #ifdef MONO_ARCH_HAVE_OBJC_GET_SELECTOR
6433                 if (!strcmp (cmethod->klass->name, "GetHandle") && fsig->param_count == 1 &&
6434                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6435                     cfg->compile_aot) {
6436                         MonoInst *pi;
6437                         MonoJumpInfoToken *ji;
6438                         MonoString *s;
6439
6440                         cfg->disable_llvm = TRUE;
6441
6442                         if (args [0]->opcode == OP_GOT_ENTRY) {
6443                                 pi = args [0]->inst_p1;
6444                                 g_assert (pi->opcode == OP_PATCH_INFO);
6445                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6446                                 ji = pi->inst_p0;
6447                         } else {
6448                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6449                                 ji = args [0]->inst_p0;
6450                         }
6451
6452                         NULLIFY_INS (args [0]);
6453
6454                         // FIXME: Ugly
6455                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6456                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6457                         ins->dreg = mono_alloc_ireg (cfg);
6458                         // FIXME: Leaks
6459                         ins->inst_p0 = mono_string_to_utf8 (s);
6460                         MONO_ADD_INS (cfg->cbb, ins);
6461                         return ins;
6462                 }
6463 #endif
6464         }
6465
6466 #ifdef MONO_ARCH_SIMD_INTRINSICS
6467         if (cfg->opt & MONO_OPT_SIMD) {
6468                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6469                 if (ins)
6470                         return ins;
6471         }
6472 #endif
6473
6474         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6475         if (ins)
6476                 return ins;
6477
6478         if (COMPILE_LLVM (cfg)) {
6479                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6480                 if (ins)
6481                         return ins;
6482         }
6483
6484         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6485 }
6486
6487 /*
6488  * This entry point could be used later for arbitrary method
6489  * redirection.
6490  */
6491 inline static MonoInst*
6492 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6493                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this)
6494 {
6495         if (method->klass == mono_defaults.string_class) {
6496                 /* managed string allocation support */
6497                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6498                         MonoInst *iargs [2];
6499                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6500                         MonoMethod *managed_alloc = NULL;
6501
6502                         g_assert (vtable); /*Should not fail since it System.String*/
6503 #ifndef MONO_CROSS_COMPILE
6504                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE);
6505 #endif
6506                         if (!managed_alloc)
6507                                 return NULL;
6508                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6509                         iargs [1] = args [0];
6510                         return mono_emit_method_call (cfg, managed_alloc, iargs, this);
6511                 }
6512         }
6513         return NULL;
6514 }
6515
6516 static void
6517 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6518 {
6519         MonoInst *store, *temp;
6520         int i;
6521
6522         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6523                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6524
6525                 /*
6526                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6527                  * would be different than the MonoInst's used to represent arguments, and
6528                  * the ldelema implementation can't deal with that.
6529                  * Solution: When ldelema is used on an inline argument, create a var for
6530                  * it, emit ldelema on that var, and emit the saving code below in
6531                  * inline_method () if needed.
6532                  */
6533                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6534                 cfg->args [i] = temp;
6535                 /* This uses cfg->args [i] which is set by the preceeding line */
6536                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6537                 store->cil_code = sp [0]->cil_code;
6538                 sp++;
6539         }
6540 }
6541
6542 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6543 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6544
6545 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6546 static gboolean
6547 check_inline_called_method_name_limit (MonoMethod *called_method)
6548 {
6549         int strncmp_result;
6550         static const char *limit = NULL;
6551
6552         if (limit == NULL) {
6553                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6554
6555                 if (limit_string != NULL)
6556                         limit = limit_string;
6557                 else
6558                         limit = "";
6559         }
6560
6561         if (limit [0] != '\0') {
6562                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6563
6564                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6565                 g_free (called_method_name);
6566
6567                 //return (strncmp_result <= 0);
6568                 return (strncmp_result == 0);
6569         } else {
6570                 return TRUE;
6571         }
6572 }
6573 #endif
6574
6575 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6576 static gboolean
6577 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6578 {
6579         int strncmp_result;
6580         static const char *limit = NULL;
6581
6582         if (limit == NULL) {
6583                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6584                 if (limit_string != NULL) {
6585                         limit = limit_string;
6586                 } else {
6587                         limit = "";
6588                 }
6589         }
6590
6591         if (limit [0] != '\0') {
6592                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6593
6594                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6595                 g_free (caller_method_name);
6596
6597                 //return (strncmp_result <= 0);
6598                 return (strncmp_result == 0);
6599         } else {
6600                 return TRUE;
6601         }
6602 }
6603 #endif
6604
6605 static void
6606 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6607 {
6608         static double r8_0 = 0.0;
6609         static float r4_0 = 0.0;
6610         MonoInst *ins;
6611         int t;
6612
6613         rtype = mini_replace_type (rtype);
6614         t = rtype->type;
6615
6616         if (rtype->byref) {
6617                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6618         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6619                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6620         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6621                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6622         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6623                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6624                 ins->type = STACK_R4;
6625                 ins->inst_p0 = (void*)&r4_0;
6626                 ins->dreg = dreg;
6627                 MONO_ADD_INS (cfg->cbb, ins);
6628         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6629                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6630                 ins->type = STACK_R8;
6631                 ins->inst_p0 = (void*)&r8_0;
6632                 ins->dreg = dreg;
6633                 MONO_ADD_INS (cfg->cbb, ins);
6634         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6635                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6636                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6637         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (cfg, rtype)) {
6638                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6639         } else {
6640                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6641         }
6642 }
6643
6644 static void
6645 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6646 {
6647         int t;
6648
6649         rtype = mini_replace_type (rtype);
6650         t = rtype->type;
6651
6652         if (rtype->byref) {
6653                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6654         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6655                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6656         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6657                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6658         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6659                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6660         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6661                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6662         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6663                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6664                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6665         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (cfg, rtype)) {
6666                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6667         } else {
6668                 emit_init_rvar (cfg, dreg, rtype);
6669         }
6670 }
6671
6672 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6673 static void
6674 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6675 {
6676         MonoInst *var = cfg->locals [local];
6677         if (COMPILE_SOFT_FLOAT (cfg)) {
6678                 MonoInst *store;
6679                 int reg = alloc_dreg (cfg, var->type);
6680                 emit_init_rvar (cfg, reg, type);
6681                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6682         } else {
6683                 if (init)
6684                         emit_init_rvar (cfg, var->dreg, type);
6685                 else
6686                         emit_dummy_init_rvar (cfg, var->dreg, type);
6687         }
6688 }
6689
6690 /*
6691  * inline_method:
6692  *
6693  *   Return the cost of inlining CMETHOD.
6694  */
6695 static int
6696 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6697                            guchar *ip, guint real_offset, gboolean inline_always, MonoBasicBlock **out_cbb)
6698 {
6699         MonoInst *ins, *rvar = NULL;
6700         MonoMethodHeader *cheader;
6701         MonoBasicBlock *ebblock, *sbblock;
6702         int i, costs;
6703         MonoMethod *prev_inlined_method;
6704         MonoInst **prev_locals, **prev_args;
6705         MonoType **prev_arg_types;
6706         guint prev_real_offset;
6707         GHashTable *prev_cbb_hash;
6708         MonoBasicBlock **prev_cil_offset_to_bb;
6709         MonoBasicBlock *prev_cbb;
6710         unsigned char* prev_cil_start;
6711         guint32 prev_cil_offset_to_bb_len;
6712         MonoMethod *prev_current_method;
6713         MonoGenericContext *prev_generic_context;
6714         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual = FALSE;
6715
6716         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6717
6718 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6719         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6720                 return 0;
6721 #endif
6722 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6723         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6724                 return 0;
6725 #endif
6726
6727         if (cfg->verbose_level > 2)
6728                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6729
6730         if (!cmethod->inline_info) {
6731                 cfg->stat_inlineable_methods++;
6732                 cmethod->inline_info = 1;
6733         }
6734
6735         /* allocate local variables */
6736         cheader = mono_method_get_header (cmethod);
6737
6738         if (cheader == NULL || mono_loader_get_last_error ()) {
6739                 MonoLoaderError *error = mono_loader_get_last_error ();
6740
6741                 if (cheader)
6742                         mono_metadata_free_mh (cheader);
6743                 if (inline_always && error)
6744                         mono_cfg_set_exception (cfg, error->exception_type);
6745
6746                 mono_loader_clear_error ();
6747                 return 0;
6748         }
6749
6750         /*Must verify before creating locals as it can cause the JIT to assert.*/
6751         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6752                 mono_metadata_free_mh (cheader);
6753                 return 0;
6754         }
6755
6756         /* allocate space to store the return value */
6757         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6758                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6759         }
6760
6761         prev_locals = cfg->locals;
6762         cfg->locals = mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6763         for (i = 0; i < cheader->num_locals; ++i)
6764                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6765
6766         /* allocate start and end blocks */
6767         /* This is needed so if the inline is aborted, we can clean up */
6768         NEW_BBLOCK (cfg, sbblock);
6769         sbblock->real_offset = real_offset;
6770
6771         NEW_BBLOCK (cfg, ebblock);
6772         ebblock->block_num = cfg->num_bblocks++;
6773         ebblock->real_offset = real_offset;
6774
6775         prev_args = cfg->args;
6776         prev_arg_types = cfg->arg_types;
6777         prev_inlined_method = cfg->inlined_method;
6778         cfg->inlined_method = cmethod;
6779         cfg->ret_var_set = FALSE;
6780         cfg->inline_depth ++;
6781         prev_real_offset = cfg->real_offset;
6782         prev_cbb_hash = cfg->cbb_hash;
6783         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6784         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6785         prev_cil_start = cfg->cil_start;
6786         prev_cbb = cfg->cbb;
6787         prev_current_method = cfg->current_method;
6788         prev_generic_context = cfg->generic_context;
6789         prev_ret_var_set = cfg->ret_var_set;
6790         prev_disable_inline = cfg->disable_inline;
6791
6792         if (*ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6793                 virtual = TRUE;
6794
6795         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual);
6796
6797         ret_var_set = cfg->ret_var_set;
6798
6799         cfg->inlined_method = prev_inlined_method;
6800         cfg->real_offset = prev_real_offset;
6801         cfg->cbb_hash = prev_cbb_hash;
6802         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6803         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6804         cfg->cil_start = prev_cil_start;
6805         cfg->locals = prev_locals;
6806         cfg->args = prev_args;
6807         cfg->arg_types = prev_arg_types;
6808         cfg->current_method = prev_current_method;
6809         cfg->generic_context = prev_generic_context;
6810         cfg->ret_var_set = prev_ret_var_set;
6811         cfg->disable_inline = prev_disable_inline;
6812         cfg->inline_depth --;
6813
6814         if ((costs >= 0 && costs < 60) || inline_always) {
6815                 if (cfg->verbose_level > 2)
6816                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6817
6818                 cfg->stat_inlined_methods++;
6819
6820                 /* always add some code to avoid block split failures */
6821                 MONO_INST_NEW (cfg, ins, OP_NOP);
6822                 MONO_ADD_INS (prev_cbb, ins);
6823
6824                 prev_cbb->next_bb = sbblock;
6825                 link_bblock (cfg, prev_cbb, sbblock);
6826
6827                 /*
6828                  * Get rid of the begin and end bblocks if possible to aid local
6829                  * optimizations.
6830                  */
6831                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6832
6833                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6834                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6835
6836                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6837                         MonoBasicBlock *prev = ebblock->in_bb [0];
6838                         mono_merge_basic_blocks (cfg, prev, ebblock);
6839                         cfg->cbb = prev;
6840                         if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6841                                 mono_merge_basic_blocks (cfg, prev_cbb, prev);
6842                                 cfg->cbb = prev_cbb;
6843                         }
6844                 } else {
6845                         /*
6846                          * Its possible that the rvar is set in some prev bblock, but not in others.
6847                          * (#1835).
6848                          */
6849                         if (rvar) {
6850                                 MonoBasicBlock *bb;
6851
6852                                 for (i = 0; i < ebblock->in_count; ++i) {
6853                                         bb = ebblock->in_bb [i];
6854
6855                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6856                                                 cfg->cbb = bb;
6857
6858                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6859                                         }
6860                                 }
6861                         }
6862
6863                         cfg->cbb = ebblock;
6864                 }
6865
6866                 *out_cbb = cfg->cbb;
6867
6868                 if (rvar) {
6869                         /*
6870                          * If the inlined method contains only a throw, then the ret var is not
6871                          * set, so set it to a dummy value.
6872                          */
6873                         if (!ret_var_set)
6874                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6875
6876                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6877                         *sp++ = ins;
6878                 }
6879                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6880                 return costs + 1;
6881         } else {
6882                 if (cfg->verbose_level > 2)
6883                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6884                 cfg->exception_type = MONO_EXCEPTION_NONE;
6885                 mono_loader_clear_error ();
6886
6887                 /* This gets rid of the newly added bblocks */
6888                 cfg->cbb = prev_cbb;
6889         }
6890         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6891         return 0;
6892 }
6893
6894 /*
6895  * Some of these comments may well be out-of-date.
6896  * Design decisions: we do a single pass over the IL code (and we do bblock
6897  * splitting/merging in the few cases when it's required: a back jump to an IL
6898  * address that was not already seen as bblock starting point).
6899  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6900  * Complex operations are decomposed in simpler ones right away. We need to let the
6901  * arch-specific code peek and poke inside this process somehow (except when the
6902  * optimizations can take advantage of the full semantic info of coarse opcodes).
6903  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6904  * MonoInst->opcode initially is the IL opcode or some simplification of that
6905  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6906  * opcode with value bigger than OP_LAST.
6907  * At this point the IR can be handed over to an interpreter, a dumb code generator
6908  * or to the optimizing code generator that will translate it to SSA form.
6909  *
6910  * Profiling directed optimizations.
6911  * We may compile by default with few or no optimizations and instrument the code
6912  * or the user may indicate what methods to optimize the most either in a config file
6913  * or through repeated runs where the compiler applies offline the optimizations to
6914  * each method and then decides if it was worth it.
6915  */
6916
6917 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6918 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6919 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6920 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6921 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6922 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6923 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6924 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) TYPE_LOAD_ERROR ((klass))
6925
6926 /* offset from br.s -> br like opcodes */
6927 #define BIG_BRANCH_OFFSET 13
6928
6929 static gboolean
6930 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6931 {
6932         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6933
6934         return b == NULL || b == bb;
6935 }
6936
6937 static int
6938 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6939 {
6940         unsigned char *ip = start;
6941         unsigned char *target;
6942         int i;
6943         guint cli_addr;
6944         MonoBasicBlock *bblock;
6945         const MonoOpcode *opcode;
6946
6947         while (ip < end) {
6948                 cli_addr = ip - start;
6949                 i = mono_opcode_value ((const guint8 **)&ip, end);
6950                 if (i < 0)
6951                         UNVERIFIED;
6952                 opcode = &mono_opcodes [i];
6953                 switch (opcode->argument) {
6954                 case MonoInlineNone:
6955                         ip++;
6956                         break;
6957                 case MonoInlineString:
6958                 case MonoInlineType:
6959                 case MonoInlineField:
6960                 case MonoInlineMethod:
6961                 case MonoInlineTok:
6962                 case MonoInlineSig:
6963                 case MonoShortInlineR:
6964                 case MonoInlineI:
6965                         ip += 5;
6966                         break;
6967                 case MonoInlineVar:
6968                         ip += 3;
6969                         break;
6970                 case MonoShortInlineVar:
6971                 case MonoShortInlineI:
6972                         ip += 2;
6973                         break;
6974                 case MonoShortInlineBrTarget:
6975                         target = start + cli_addr + 2 + (signed char)ip [1];
6976                         GET_BBLOCK (cfg, bblock, target);
6977                         ip += 2;
6978                         if (ip < end)
6979                                 GET_BBLOCK (cfg, bblock, ip);
6980                         break;
6981                 case MonoInlineBrTarget:
6982                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6983                         GET_BBLOCK (cfg, bblock, target);
6984                         ip += 5;
6985                         if (ip < end)
6986                                 GET_BBLOCK (cfg, bblock, ip);
6987                         break;
6988                 case MonoInlineSwitch: {
6989                         guint32 n = read32 (ip + 1);
6990                         guint32 j;
6991                         ip += 5;
6992                         cli_addr += 5 + 4 * n;
6993                         target = start + cli_addr;
6994                         GET_BBLOCK (cfg, bblock, target);
6995
6996                         for (j = 0; j < n; ++j) {
6997                                 target = start + cli_addr + (gint32)read32 (ip);
6998                                 GET_BBLOCK (cfg, bblock, target);
6999                                 ip += 4;
7000                         }
7001                         break;
7002                 }
7003                 case MonoInlineR:
7004                 case MonoInlineI8:
7005                         ip += 9;
7006                         break;
7007                 default:
7008                         g_assert_not_reached ();
7009                 }
7010
7011                 if (i == CEE_THROW) {
7012                         unsigned char *bb_start = ip - 1;
7013
7014                         /* Find the start of the bblock containing the throw */
7015                         bblock = NULL;
7016                         while ((bb_start >= start) && !bblock) {
7017                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7018                                 bb_start --;
7019                         }
7020                         if (bblock)
7021                                 bblock->out_of_line = 1;
7022                 }
7023         }
7024         return 0;
7025 unverified:
7026 exception_exit:
7027         *pos = ip;
7028         return 1;
7029 }
7030
7031 static inline MonoMethod *
7032 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7033 {
7034         MonoMethod *method;
7035
7036         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7037                 method = mono_method_get_wrapper_data (m, token);
7038                 if (context) {
7039                         MonoError error;
7040                         method = mono_class_inflate_generic_method_checked (method, context, &error);
7041                         g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
7042                 }
7043         } else {
7044                 method = mono_get_method_full (m->klass->image, token, klass, context);
7045         }
7046
7047         return method;
7048 }
7049
7050 static inline MonoMethod *
7051 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7052 {
7053         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context);
7054
7055         if (method && cfg && !cfg->generic_sharing_context && mono_class_is_open_constructed_type (&method->klass->byval_arg))
7056                 return NULL;
7057
7058         return method;
7059 }
7060
7061 static inline MonoClass*
7062 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7063 {
7064         MonoError error;
7065         MonoClass *klass;
7066
7067         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7068                 klass = mono_method_get_wrapper_data (method, token);
7069                 if (context)
7070                         klass = mono_class_inflate_generic_class (klass, context);
7071         } else {
7072                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7073                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7074         }
7075         if (klass)
7076                 mono_class_init (klass);
7077         return klass;
7078 }
7079
7080 static inline MonoMethodSignature*
7081 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7082 {
7083         MonoMethodSignature *fsig;
7084
7085         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7086                 MonoError error;
7087
7088                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7089                 if (context) {
7090                         fsig = mono_inflate_generic_signature (fsig, context, &error);
7091                         // FIXME:
7092                         g_assert (mono_error_ok (&error));
7093                 }
7094         } else {
7095                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7096         }
7097         return fsig;
7098 }
7099
7100 /*
7101  * Returns TRUE if the JIT should abort inlining because "callee"
7102  * is influenced by security attributes.
7103  */
7104 static
7105 gboolean check_linkdemand (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7106 {
7107         guint32 result;
7108
7109         if ((cfg->method != caller) && mono_security_method_has_declsec (callee)) {
7110                 return TRUE;
7111         }
7112
7113         result = mono_declsec_linkdemand (cfg->domain, caller, callee);
7114         if (result == MONO_JIT_SECURITY_OK)
7115                 return FALSE;
7116
7117         if (result == MONO_JIT_LINKDEMAND_ECMA) {
7118                 /* Generate code to throw a SecurityException before the actual call/link */
7119                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7120                 MonoInst *args [2];
7121
7122                 NEW_ICONST (cfg, args [0], 4);
7123                 NEW_METHODCONST (cfg, args [1], caller);
7124                 mono_emit_method_call (cfg, secman->linkdemandsecurityexception, args, NULL);
7125         } else if (cfg->exception_type == MONO_EXCEPTION_NONE) {
7126                  /* don't hide previous results */
7127                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_SECURITY_LINKDEMAND);
7128                 cfg->exception_data = result;
7129                 return TRUE;
7130         }
7131
7132         return FALSE;
7133 }
7134
7135 static MonoMethod*
7136 throw_exception (void)
7137 {
7138         static MonoMethod *method = NULL;
7139
7140         if (!method) {
7141                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7142                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7143         }
7144         g_assert (method);
7145         return method;
7146 }
7147
7148 static void
7149 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7150 {
7151         MonoMethod *thrower = throw_exception ();
7152         MonoInst *args [1];
7153
7154         EMIT_NEW_PCONST (cfg, args [0], ex);
7155         mono_emit_method_call (cfg, thrower, args, NULL);
7156 }
7157
7158 /*
7159  * Return the original method is a wrapper is specified. We can only access
7160  * the custom attributes from the original method.
7161  */
7162 static MonoMethod*
7163 get_original_method (MonoMethod *method)
7164 {
7165         if (method->wrapper_type == MONO_WRAPPER_NONE)
7166                 return method;
7167
7168         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7169         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7170                 return NULL;
7171
7172         /* in other cases we need to find the original method */
7173         return mono_marshal_method_from_wrapper (method);
7174 }
7175
7176 static void
7177 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field,
7178                                           MonoBasicBlock *bblock, unsigned char *ip)
7179 {
7180         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7181         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7182         if (ex)
7183                 emit_throw_exception (cfg, ex);
7184 }
7185
7186 static void
7187 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee,
7188                                          MonoBasicBlock *bblock, unsigned char *ip)
7189 {
7190         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7191         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7192         if (ex)
7193                 emit_throw_exception (cfg, ex);
7194 }
7195
7196 /*
7197  * Check that the IL instructions at ip are the array initialization
7198  * sequence and return the pointer to the data and the size.
7199  */
7200 static const char*
7201 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7202 {
7203         /*
7204          * newarr[System.Int32]
7205          * dup
7206          * ldtoken field valuetype ...
7207          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7208          */
7209         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7210                 MonoError error;
7211                 guint32 token = read32 (ip + 7);
7212                 guint32 field_token = read32 (ip + 2);
7213                 guint32 field_index = field_token & 0xffffff;
7214                 guint32 rva;
7215                 const char *data_ptr;
7216                 int size = 0;
7217                 MonoMethod *cmethod;
7218                 MonoClass *dummy_class;
7219                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7220                 int dummy_align;
7221
7222                 if (!field) {
7223                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7224                         return NULL;
7225                 }
7226
7227                 *out_field_token = field_token;
7228
7229                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7230                 if (!cmethod)
7231                         return NULL;
7232                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7233                         return NULL;
7234                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7235                 case MONO_TYPE_BOOLEAN:
7236                 case MONO_TYPE_I1:
7237                 case MONO_TYPE_U1:
7238                         size = 1; break;
7239                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7240 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7241                 case MONO_TYPE_CHAR:
7242                 case MONO_TYPE_I2:
7243                 case MONO_TYPE_U2:
7244                         size = 2; break;
7245                 case MONO_TYPE_I4:
7246                 case MONO_TYPE_U4:
7247                 case MONO_TYPE_R4:
7248                         size = 4; break;
7249                 case MONO_TYPE_R8:
7250                 case MONO_TYPE_I8:
7251                 case MONO_TYPE_U8:
7252                         size = 8; break;
7253 #endif
7254                 default:
7255                         return NULL;
7256                 }
7257                 size *= len;
7258                 if (size > mono_type_size (field->type, &dummy_align))
7259                     return NULL;
7260                 *out_size = size;
7261                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7262                 if (!image_is_dynamic (method->klass->image)) {
7263                         field_index = read32 (ip + 2) & 0xffffff;
7264                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7265                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7266                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7267                         /* for aot code we do the lookup on load */
7268                         if (aot && data_ptr)
7269                                 return GUINT_TO_POINTER (rva);
7270                 } else {
7271                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7272                         g_assert (!aot);
7273                         data_ptr = mono_field_get_data (field);
7274                 }
7275                 return data_ptr;
7276         }
7277         return NULL;
7278 }
7279
7280 static void
7281 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7282 {
7283         char *method_fname = mono_method_full_name (method, TRUE);
7284         char *method_code;
7285         MonoMethodHeader *header = mono_method_get_header (method);
7286
7287         if (header->code_size == 0)
7288                 method_code = g_strdup ("method body is empty.");
7289         else
7290                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7291         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
7292         cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
7293         g_free (method_fname);
7294         g_free (method_code);
7295         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7296 }
7297
7298 static void
7299 set_exception_object (MonoCompile *cfg, MonoException *exception)
7300 {
7301         mono_cfg_set_exception (cfg, MONO_EXCEPTION_OBJECT_SUPPLIED);
7302         MONO_GC_REGISTER_ROOT_SINGLE (cfg->exception_ptr);
7303         cfg->exception_ptr = exception;
7304 }
7305
7306 static void
7307 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7308 {
7309         MonoInst *ins;
7310         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7311         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7312                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7313                 /* Optimize reg-reg moves away */
7314                 /*
7315                  * Can't optimize other opcodes, since sp[0] might point to
7316                  * the last ins of a decomposed opcode.
7317                  */
7318                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7319         } else {
7320                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7321         }
7322 }
7323
7324 /*
7325  * ldloca inhibits many optimizations so try to get rid of it in common
7326  * cases.
7327  */
7328 static inline unsigned char *
7329 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7330 {
7331         int local, token;
7332         MonoClass *klass;
7333         MonoType *type;
7334
7335         if (size == 1) {
7336                 local = ip [1];
7337                 ip += 2;
7338         } else {
7339                 local = read16 (ip + 2);
7340                 ip += 4;
7341         }
7342
7343         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7344                 /* From the INITOBJ case */
7345                 token = read32 (ip + 2);
7346                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7347                 CHECK_TYPELOAD (klass);
7348                 type = mini_replace_type (&klass->byval_arg);
7349                 emit_init_local (cfg, local, type, TRUE);
7350                 return ip + 6;
7351         }
7352  exception_exit:
7353         return NULL;
7354 }
7355
7356 static gboolean
7357 is_exception_class (MonoClass *class)
7358 {
7359         while (class) {
7360                 if (class == mono_defaults.exception_class)
7361                         return TRUE;
7362                 class = class->parent;
7363         }
7364         return FALSE;
7365 }
7366
7367 /*
7368  * is_jit_optimizer_disabled:
7369  *
7370  *   Determine whenever M's assembly has a DebuggableAttribute with the
7371  * IsJITOptimizerDisabled flag set.
7372  */
7373 static gboolean
7374 is_jit_optimizer_disabled (MonoMethod *m)
7375 {
7376         MonoAssembly *ass = m->klass->image->assembly;
7377         MonoCustomAttrInfo* attrs;
7378         static MonoClass *klass;
7379         int i;
7380         gboolean val = FALSE;
7381
7382         g_assert (ass);
7383         if (ass->jit_optimizer_disabled_inited)
7384                 return ass->jit_optimizer_disabled;
7385
7386         if (!klass)
7387                 klass = mono_class_from_name (mono_defaults.corlib, "System.Diagnostics", "DebuggableAttribute");
7388         if (!klass) {
7389                 /* Linked away */
7390                 ass->jit_optimizer_disabled = FALSE;
7391                 mono_memory_barrier ();
7392                 ass->jit_optimizer_disabled_inited = TRUE;
7393                 return FALSE;
7394         }
7395
7396         attrs = mono_custom_attrs_from_assembly (ass);
7397         if (attrs) {
7398                 for (i = 0; i < attrs->num_attrs; ++i) {
7399                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7400                         const gchar *p;
7401                         int len;
7402                         MonoMethodSignature *sig;
7403
7404                         if (!attr->ctor || attr->ctor->klass != klass)
7405                                 continue;
7406                         /* Decode the attribute. See reflection.c */
7407                         len = attr->data_size;
7408                         p = (const char*)attr->data;
7409                         g_assert (read16 (p) == 0x0001);
7410                         p += 2;
7411
7412                         // FIXME: Support named parameters
7413                         sig = mono_method_signature (attr->ctor);
7414                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7415                                 continue;
7416                         /* Two boolean arguments */
7417                         p ++;
7418                         val = *p;
7419                 }
7420                 mono_custom_attrs_free (attrs);
7421         }
7422
7423         ass->jit_optimizer_disabled = val;
7424         mono_memory_barrier ();
7425         ass->jit_optimizer_disabled_inited = TRUE;
7426
7427         return val;
7428 }
7429
7430 static gboolean
7431 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7432 {
7433         gboolean supported_tail_call;
7434         int i;
7435
7436 #ifdef MONO_ARCH_HAVE_OP_TAIL_CALL
7437         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7438 #else
7439         supported_tail_call = mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cmethod)) && !MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->ret);
7440 #endif
7441
7442         for (i = 0; i < fsig->param_count; ++i) {
7443                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7444                         /* These can point to the current method's stack */
7445                         supported_tail_call = FALSE;
7446         }
7447         if (fsig->hasthis && cmethod->klass->valuetype)
7448                 /* this might point to the current method's stack */
7449                 supported_tail_call = FALSE;
7450         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7451                 supported_tail_call = FALSE;
7452         if (cfg->method->save_lmf)
7453                 supported_tail_call = FALSE;
7454         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7455                 supported_tail_call = FALSE;
7456         if (call_opcode != CEE_CALL)
7457                 supported_tail_call = FALSE;
7458
7459         /* Debugging support */
7460 #if 0
7461         if (supported_tail_call) {
7462                 if (!mono_debug_count ())
7463                         supported_tail_call = FALSE;
7464         }
7465 #endif
7466
7467         return supported_tail_call;
7468 }
7469
7470 /* the JIT intercepts ldflda instructions to the tlsdata field in ThreadLocal<T> and redirects
7471  * it to the thread local value based on the tls_offset field. Every other kind of access to
7472  * the field causes an assert.
7473  */
7474 static gboolean
7475 is_magic_tls_access (MonoClassField *field)
7476 {
7477         if (strcmp (field->name, "tlsdata"))
7478                 return FALSE;
7479         if (strcmp (field->parent->name, "ThreadLocal`1"))
7480                 return FALSE;
7481         return field->parent->image == mono_defaults.corlib;
7482 }
7483
7484 /* emits the code needed to access a managed tls var (like ThreadStatic)
7485  * with the value of the tls offset in offset_reg. thread_ins represents the MonoInternalThread
7486  * pointer for the current thread.
7487  * Returns the MonoInst* representing the address of the tls var.
7488  */
7489 static MonoInst*
7490 emit_managed_static_data_access (MonoCompile *cfg, MonoInst *thread_ins, int offset_reg)
7491 {
7492         MonoInst *addr;
7493         int static_data_reg, array_reg, dreg;
7494         int offset2_reg, idx_reg;
7495         // inlined access to the tls data
7496         // idx = (offset >> 24) - 1;
7497         // return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
7498         static_data_reg = alloc_ireg (cfg);
7499         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
7500         idx_reg = alloc_ireg (cfg);
7501         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_IMM, idx_reg, offset_reg, 24);
7502         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISUB_IMM, idx_reg, idx_reg, 1);
7503         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
7504         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
7505         array_reg = alloc_ireg (cfg);
7506         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
7507         offset2_reg = alloc_ireg (cfg);
7508         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset_reg, 0xffffff);
7509         dreg = alloc_ireg (cfg);
7510         EMIT_NEW_BIALU (cfg, addr, OP_PADD, dreg, array_reg, offset2_reg);
7511         return addr;
7512 }
7513
7514 /*
7515  * redirect access to the tlsdata field to the tls var given by the tls_offset field.
7516  * this address is cached per-method in cached_tls_addr.
7517  */
7518 static MonoInst*
7519 create_magic_tls_access (MonoCompile *cfg, MonoClassField *tls_field, MonoInst **cached_tls_addr, MonoInst *thread_local)
7520 {
7521         MonoInst *load, *addr, *temp, *store, *thread_ins;
7522         MonoClassField *offset_field;
7523
7524         if (*cached_tls_addr) {
7525                 EMIT_NEW_TEMPLOAD (cfg, addr, (*cached_tls_addr)->inst_c0);
7526                 return addr;
7527         }
7528         thread_ins = mono_get_thread_intrinsic (cfg);
7529         offset_field = mono_class_get_field_from_name (tls_field->parent, "tls_offset");
7530
7531         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, offset_field->type, thread_local->dreg, offset_field->offset);
7532         if (thread_ins) {
7533                 MONO_ADD_INS (cfg->cbb, thread_ins);
7534         } else {
7535                 MonoMethod *thread_method;
7536                 thread_method = mono_class_get_method_from_name (mono_get_thread_class(), "CurrentInternalThread_internal", 0);
7537                 thread_ins = mono_emit_method_call (cfg, thread_method, NULL, NULL);
7538         }
7539         addr = emit_managed_static_data_access (cfg, thread_ins, load->dreg);
7540         addr->klass = mono_class_from_mono_type (tls_field->type);
7541         addr->type = STACK_MP;
7542         *cached_tls_addr = temp = mono_compile_create_var (cfg, type_from_stack_type (addr), OP_LOCAL);
7543         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, addr);
7544
7545         EMIT_NEW_TEMPLOAD (cfg, addr, temp->inst_c0);
7546         return addr;
7547 }
7548
7549 /*
7550  * handle_ctor_call:
7551  *
7552  *   Handle calls made to ctors from NEWOBJ opcodes.
7553  *
7554  *   REF_BBLOCK will point to the current bblock after the call.
7555  */
7556 static void
7557 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7558                                   MonoInst **sp, guint8 *ip, MonoBasicBlock **ref_bblock, int *inline_costs)
7559 {
7560         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7561         MonoBasicBlock *bblock = *ref_bblock;
7562
7563         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7564                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7565                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7566                         mono_class_vtable (cfg->domain, cmethod->klass);
7567                         CHECK_TYPELOAD (cmethod->klass);
7568
7569                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7570                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7571                 } else {
7572                         if (context_used) {
7573                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
7574                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7575                         } else {
7576                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7577
7578                                 CHECK_TYPELOAD (cmethod->klass);
7579                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7580                         }
7581                 }
7582         }
7583
7584         /* Avoid virtual calls to ctors if possible */
7585         if (mono_class_is_marshalbyref (cmethod->klass))
7586                 callvirt_this_arg = sp [0];
7587
7588         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7589                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7590                 CHECK_CFG_EXCEPTION;
7591         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7592                            mono_method_check_inlining (cfg, cmethod) &&
7593                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7594                 int costs;
7595
7596                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE, &bblock))) {
7597                         cfg->real_offset += 5;
7598
7599                         *inline_costs += costs - 5;
7600                         *ref_bblock = bblock;
7601                 } else {
7602                         INLINE_FAILURE ("inline failure");
7603                         // FIXME-VT: Clean this up
7604                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
7605                                 GSHAREDVT_FAILURE(*ip);
7606                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7607                 }
7608         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
7609                 MonoInst *addr;
7610
7611                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7612                 mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7613         } else if (context_used &&
7614                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7615                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7616                 MonoInst *cmethod_addr;
7617
7618                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7619
7620                 cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7621                                                                                           cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7622
7623                 mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7624         } else {
7625                 INLINE_FAILURE ("ctor call");
7626                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7627                                                                                   callvirt_this_arg, NULL, vtable_arg);
7628         }
7629  exception_exit:
7630         return;
7631 }
7632
7633 /*
7634  * mono_method_to_ir:
7635  *
7636  *   Translate the .net IL into linear IR.
7637  */
7638 int
7639 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7640                    MonoInst *return_var, MonoInst **inline_args,
7641                    guint inline_offset, gboolean is_virtual_call)
7642 {
7643         MonoError error;
7644         MonoInst *ins, **sp, **stack_start;
7645         MonoBasicBlock *bblock, *tblock = NULL, *init_localsbb = NULL;
7646         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7647         MonoMethod *cmethod, *method_definition;
7648         MonoInst **arg_array;
7649         MonoMethodHeader *header;
7650         MonoImage *image;
7651         guint32 token, ins_flag;
7652         MonoClass *klass;
7653         MonoClass *constrained_call = NULL;
7654         unsigned char *ip, *end, *target, *err_pos;
7655         MonoMethodSignature *sig;
7656         MonoGenericContext *generic_context = NULL;
7657         MonoGenericContainer *generic_container = NULL;
7658         MonoType **param_types;
7659         int i, n, start_new_bblock, dreg;
7660         int num_calls = 0, inline_costs = 0;
7661         int breakpoint_id = 0;
7662         guint num_args;
7663         MonoBoolean security, pinvoke;
7664         MonoSecurityManager* secman = NULL;
7665         MonoDeclSecurityActions actions;
7666         GSList *class_inits = NULL;
7667         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7668         int context_used;
7669         gboolean init_locals, seq_points, skip_dead_blocks;
7670         gboolean sym_seq_points = FALSE;
7671         MonoInst *cached_tls_addr = NULL;
7672         MonoDebugMethodInfo *minfo;
7673         MonoBitSet *seq_point_locs = NULL;
7674         MonoBitSet *seq_point_set_locs = NULL;
7675
7676         cfg->disable_inline = is_jit_optimizer_disabled (method);
7677
7678         /* serialization and xdomain stuff may need access to private fields and methods */
7679         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7680         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7681         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7682         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7683         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7684         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7685
7686         dont_verify |= mono_security_smcs_hack_enabled ();
7687
7688         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7689         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7690         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7691         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7692         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7693
7694         image = method->klass->image;
7695         header = mono_method_get_header (method);
7696         if (!header) {
7697                 MonoLoaderError *error;
7698
7699                 if ((error = mono_loader_get_last_error ())) {
7700                         mono_cfg_set_exception (cfg, error->exception_type);
7701                 } else {
7702                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
7703                         cfg->exception_message = g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name);
7704                 }
7705                 goto exception_exit;
7706         }
7707         generic_container = mono_method_get_generic_container (method);
7708         sig = mono_method_signature (method);
7709         num_args = sig->hasthis + sig->param_count;
7710         ip = (unsigned char*)header->code;
7711         cfg->cil_start = ip;
7712         end = ip + header->code_size;
7713         cfg->stat_cil_code_size += header->code_size;
7714
7715         seq_points = cfg->gen_seq_points && cfg->method == method;
7716 #ifdef PLATFORM_ANDROID
7717         seq_points &= cfg->method->wrapper_type == MONO_WRAPPER_NONE;
7718 #endif
7719
7720         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7721                 /* We could hit a seq point before attaching to the JIT (#8338) */
7722                 seq_points = FALSE;
7723         }
7724
7725         if (cfg->gen_seq_points_debug_data && cfg->method == method) {
7726                 minfo = mono_debug_lookup_method (method);
7727                 if (minfo) {
7728                         int i, n_il_offsets;
7729                         int *il_offsets;
7730                         int *line_numbers;
7731
7732                         mono_debug_symfile_get_line_numbers_full (minfo, NULL, NULL, &n_il_offsets, &il_offsets, &line_numbers, NULL, NULL, NULL, NULL);
7733                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7734                         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);
7735                         sym_seq_points = TRUE;
7736                         for (i = 0; i < n_il_offsets; ++i) {
7737                                 if (il_offsets [i] < header->code_size)
7738                                         mono_bitset_set_fast (seq_point_locs, il_offsets [i]);
7739                         }
7740                         g_free (il_offsets);
7741                         g_free (line_numbers);
7742                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7743                         /* Methods without line number info like auto-generated property accessors */
7744                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7745                         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);
7746                         sym_seq_points = TRUE;
7747                 }
7748         }
7749
7750         /*
7751          * Methods without init_locals set could cause asserts in various passes
7752          * (#497220). To work around this, we emit dummy initialization opcodes
7753          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7754          * on some platforms.
7755          */
7756         if ((cfg->opt & MONO_OPT_UNSAFE) && ARCH_HAVE_DUMMY_INIT)
7757                 init_locals = header->init_locals;
7758         else
7759                 init_locals = TRUE;
7760
7761         method_definition = method;
7762         while (method_definition->is_inflated) {
7763                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7764                 method_definition = imethod->declaring;
7765         }
7766
7767         /* SkipVerification is not allowed if core-clr is enabled */
7768         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7769                 dont_verify = TRUE;
7770                 dont_verify_stloc = TRUE;
7771         }
7772
7773         if (sig->is_inflated)
7774                 generic_context = mono_method_get_context (method);
7775         else if (generic_container)
7776                 generic_context = &generic_container->context;
7777         cfg->generic_context = generic_context;
7778
7779         if (!cfg->generic_sharing_context)
7780                 g_assert (!sig->has_type_parameters);
7781
7782         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7783                 g_assert (method->is_inflated);
7784                 g_assert (mono_method_get_context (method)->method_inst);
7785         }
7786         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7787                 g_assert (sig->generic_param_count);
7788
7789         if (cfg->method == method) {
7790                 cfg->real_offset = 0;
7791         } else {
7792                 cfg->real_offset = inline_offset;
7793         }
7794
7795         cfg->cil_offset_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7796         cfg->cil_offset_to_bb_len = header->code_size;
7797
7798         cfg->current_method = method;
7799
7800         if (cfg->verbose_level > 2)
7801                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7802
7803         param_types = mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7804         if (sig->hasthis)
7805                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7806         for (n = 0; n < sig->param_count; ++n)
7807                 param_types [n + sig->hasthis] = sig->params [n];
7808         cfg->arg_types = param_types;
7809
7810         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7811         if (cfg->method == method) {
7812
7813                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7814                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7815
7816                 /* ENTRY BLOCK */
7817                 NEW_BBLOCK (cfg, start_bblock);
7818                 cfg->bb_entry = start_bblock;
7819                 start_bblock->cil_code = NULL;
7820                 start_bblock->cil_length = 0;
7821 #if defined(__native_client_codegen__)
7822                 MONO_INST_NEW (cfg, ins, OP_NACL_GC_SAFE_POINT);
7823                 ins->dreg = alloc_dreg (cfg, STACK_I4);
7824                 MONO_ADD_INS (start_bblock, ins);
7825 #endif
7826
7827                 /* EXIT BLOCK */
7828                 NEW_BBLOCK (cfg, end_bblock);
7829                 cfg->bb_exit = end_bblock;
7830                 end_bblock->cil_code = NULL;
7831                 end_bblock->cil_length = 0;
7832                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7833                 g_assert (cfg->num_bblocks == 2);
7834
7835                 arg_array = cfg->args;
7836
7837                 if (header->num_clauses) {
7838                         cfg->spvars = g_hash_table_new (NULL, NULL);
7839                         cfg->exvars = g_hash_table_new (NULL, NULL);
7840                 }
7841                 /* handle exception clauses */
7842                 for (i = 0; i < header->num_clauses; ++i) {
7843                         MonoBasicBlock *try_bb;
7844                         MonoExceptionClause *clause = &header->clauses [i];
7845                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7846                         try_bb->real_offset = clause->try_offset;
7847                         try_bb->try_start = TRUE;
7848                         try_bb->region = ((i + 1) << 8) | clause->flags;
7849                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7850                         tblock->real_offset = clause->handler_offset;
7851                         tblock->flags |= BB_EXCEPTION_HANDLER;
7852
7853                         /*
7854                          * Linking the try block with the EH block hinders inlining as we won't be able to
7855                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7856                          */
7857                         if (COMPILE_LLVM (cfg))
7858                                 link_bblock (cfg, try_bb, tblock);
7859
7860                         if (*(ip + clause->handler_offset) == CEE_POP)
7861                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7862
7863                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7864                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7865                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7866                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7867                                 MONO_ADD_INS (tblock, ins);
7868
7869                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY) {
7870                                         /* finally clauses already have a seq point */
7871                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7872                                         MONO_ADD_INS (tblock, ins);
7873                                 }
7874
7875                                 /* todo: is a fault block unsafe to optimize? */
7876                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7877                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7878                         }
7879
7880
7881                         /*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);
7882                           while (p < end) {
7883                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7884                           }*/
7885                         /* catch and filter blocks get the exception object on the stack */
7886                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7887                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7888                                 MonoInst *dummy_use;
7889
7890                                 /* mostly like handle_stack_args (), but just sets the input args */
7891                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7892                                 tblock->in_scount = 1;
7893                                 tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7894                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7895
7896                                 /*
7897                                  * Add a dummy use for the exvar so its liveness info will be
7898                                  * correct.
7899                                  */
7900                                 cfg->cbb = tblock;
7901                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7902
7903                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7904                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7905                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7906                                         tblock->real_offset = clause->data.filter_offset;
7907                                         tblock->in_scount = 1;
7908                                         tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7909                                         /* The filter block shares the exvar with the handler block */
7910                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7911                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7912                                         MONO_ADD_INS (tblock, ins);
7913                                 }
7914                         }
7915
7916                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7917                                         clause->data.catch_class &&
7918                                         cfg->generic_sharing_context &&
7919                                         mono_class_check_context_used (clause->data.catch_class)) {
7920                                 /*
7921                                  * In shared generic code with catch
7922                                  * clauses containing type variables
7923                                  * the exception handling code has to
7924                                  * be able to get to the rgctx.
7925                                  * Therefore we have to make sure that
7926                                  * the vtable/mrgctx argument (for
7927                                  * static or generic methods) or the
7928                                  * "this" argument (for non-static
7929                                  * methods) are live.
7930                                  */
7931                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7932                                                 mini_method_get_context (method)->method_inst ||
7933                                                 method->klass->valuetype) {
7934                                         mono_get_vtable_var (cfg);
7935                                 } else {
7936                                         MonoInst *dummy_use;
7937
7938                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7939                                 }
7940                         }
7941                 }
7942         } else {
7943                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7944                 cfg->cbb = start_bblock;
7945                 cfg->args = arg_array;
7946                 mono_save_args (cfg, sig, inline_args);
7947         }
7948
7949         /* FIRST CODE BLOCK */
7950         NEW_BBLOCK (cfg, bblock);
7951         bblock->cil_code = ip;
7952         cfg->cbb = bblock;
7953         cfg->ip = ip;
7954
7955         ADD_BBLOCK (cfg, bblock);
7956
7957         if (cfg->method == method) {
7958                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7959                 if (breakpoint_id) {
7960                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7961                         MONO_ADD_INS (bblock, ins);
7962                 }
7963         }
7964
7965         if (mono_security_cas_enabled ())
7966                 secman = mono_security_manager_get_methods ();
7967
7968         security = (secman && mono_security_method_has_declsec (method));
7969         /* at this point having security doesn't mean we have any code to generate */
7970         if (security && (cfg->method == method)) {
7971                 /* Only Demand, NonCasDemand and DemandChoice requires code generation.
7972                  * And we do not want to enter the next section (with allocation) if we
7973                  * have nothing to generate */
7974                 security = mono_declsec_get_demands (method, &actions);
7975         }
7976
7977         /* we must Demand SecurityPermission.Unmanaged before P/Invoking */
7978         pinvoke = (secman && (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE));
7979         if (pinvoke) {
7980                 MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7981                 if (wrapped && (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
7982                         MonoCustomAttrInfo* custom = mono_custom_attrs_from_method (wrapped);
7983
7984                         /* unless the method or it's class has the [SuppressUnmanagedCodeSecurity] attribute */
7985                         if (custom && mono_custom_attrs_has_attr (custom, secman->suppressunmanagedcodesecurity)) {
7986                                 pinvoke = FALSE;
7987                         }
7988                         if (custom)
7989                                 mono_custom_attrs_free (custom);
7990
7991                         if (pinvoke) {
7992                                 custom = mono_custom_attrs_from_class (wrapped->klass);
7993                                 if (custom && mono_custom_attrs_has_attr (custom, secman->suppressunmanagedcodesecurity)) {
7994                                         pinvoke = FALSE;
7995                                 }
7996                                 if (custom)
7997                                         mono_custom_attrs_free (custom);
7998                         }
7999                 } else {
8000                         /* not a P/Invoke after all */
8001                         pinvoke = FALSE;
8002                 }
8003         }
8004
8005         /* we use a separate basic block for the initialization code */
8006         NEW_BBLOCK (cfg, init_localsbb);
8007         cfg->bb_init = init_localsbb;
8008         init_localsbb->real_offset = cfg->real_offset;
8009         start_bblock->next_bb = init_localsbb;
8010         init_localsbb->next_bb = bblock;
8011         link_bblock (cfg, start_bblock, init_localsbb);
8012         link_bblock (cfg, init_localsbb, bblock);
8013
8014         cfg->cbb = init_localsbb;
8015
8016         if (cfg->gsharedvt && cfg->method == method) {
8017                 MonoGSharedVtMethodInfo *info;
8018                 MonoInst *var, *locals_var;
8019                 int dreg;
8020
8021                 info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8022                 info->method = cfg->method;
8023                 info->count_entries = 16;
8024                 info->entries = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8025                 cfg->gsharedvt_info = info;
8026
8027                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8028                 /* prevent it from being register allocated */
8029                 //var->flags |= MONO_INST_VOLATILE;
8030                 cfg->gsharedvt_info_var = var;
8031
8032                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8033                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8034
8035                 /* Allocate locals */
8036                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8037                 /* prevent it from being register allocated */
8038                 //locals_var->flags |= MONO_INST_VOLATILE;
8039                 cfg->gsharedvt_locals_var = locals_var;
8040
8041                 dreg = alloc_ireg (cfg);
8042                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8043
8044                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8045                 ins->dreg = locals_var->dreg;
8046                 ins->sreg1 = dreg;
8047                 MONO_ADD_INS (cfg->cbb, ins);
8048                 cfg->gsharedvt_locals_var_ins = ins;
8049
8050                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8051                 /*
8052                 if (init_locals)
8053                         ins->flags |= MONO_INST_INIT;
8054                 */
8055         }
8056
8057         /* at this point we know, if security is TRUE, that some code needs to be generated */
8058         if (security && (cfg->method == method)) {
8059                 MonoInst *args [2];
8060
8061                 cfg->stat_cas_demand_generation++;
8062
8063                 if (actions.demand.blob) {
8064                         /* Add code for SecurityAction.Demand */
8065                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.demand);
8066                         EMIT_NEW_ICONST (cfg, args [1], actions.demand.size);
8067                         /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
8068                         mono_emit_method_call (cfg, secman->demand, args, NULL);
8069                 }
8070                 if (actions.noncasdemand.blob) {
8071                         /* CLR 1.x uses a .noncasdemand (but 2.x doesn't) */
8072                         /* For Mono we re-route non-CAS Demand to Demand (as the managed code must deal with it anyway) */
8073                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.noncasdemand);
8074                         EMIT_NEW_ICONST (cfg, args [1], actions.noncasdemand.size);
8075                         /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
8076                         mono_emit_method_call (cfg, secman->demand, args, NULL);
8077                 }
8078                 if (actions.demandchoice.blob) {
8079                         /* New in 2.0, Demand must succeed for one of the permissions (i.e. not all) */
8080                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.demandchoice);
8081                         EMIT_NEW_ICONST (cfg, args [1], actions.demandchoice.size);
8082                         /* Calls static void SecurityManager.InternalDemandChoice (byte* permissions, int size); */
8083                         mono_emit_method_call (cfg, secman->demandchoice, args, NULL);
8084                 }
8085         }
8086
8087         /* we must Demand SecurityPermission.Unmanaged before p/invoking */
8088         if (pinvoke) {
8089                 mono_emit_method_call (cfg, secman->demandunmanaged, NULL, NULL);
8090         }
8091
8092         if (mono_security_core_clr_enabled ()) {
8093                 /* check if this is native code, e.g. an icall or a p/invoke */
8094                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8095                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8096                         if (wrapped) {
8097                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8098                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8099
8100                                 /* if this ia a native call then it can only be JITted from platform code */
8101                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8102                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8103                                                 MonoException *ex = icall ? mono_get_exception_security () :
8104                                                         mono_get_exception_method_access ();
8105                                                 emit_throw_exception (cfg, ex);
8106                                         }
8107                                 }
8108                         }
8109                 }
8110         }
8111
8112         CHECK_CFG_EXCEPTION;
8113
8114         if (header->code_size == 0)
8115                 UNVERIFIED;
8116
8117         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8118                 ip = err_pos;
8119                 UNVERIFIED;
8120         }
8121
8122         if (cfg->method == method)
8123                 mono_debug_init_method (cfg, bblock, breakpoint_id);
8124
8125         for (n = 0; n < header->num_locals; ++n) {
8126                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8127                         UNVERIFIED;
8128         }
8129         class_inits = NULL;
8130
8131         /* We force the vtable variable here for all shared methods
8132            for the possibility that they might show up in a stack
8133            trace where their exact instantiation is needed. */
8134         if (cfg->generic_sharing_context && method == cfg->method) {
8135                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8136                                 mini_method_get_context (method)->method_inst ||
8137                                 method->klass->valuetype) {
8138                         mono_get_vtable_var (cfg);
8139                 } else {
8140                         /* FIXME: Is there a better way to do this?
8141                            We need the variable live for the duration
8142                            of the whole method. */
8143                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8144                 }
8145         }
8146
8147         /* add a check for this != NULL to inlined methods */
8148         if (is_virtual_call) {
8149                 MonoInst *arg_ins;
8150
8151                 NEW_ARGLOAD (cfg, arg_ins, 0);
8152                 MONO_ADD_INS (cfg->cbb, arg_ins);
8153                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8154         }
8155
8156         skip_dead_blocks = !dont_verify;
8157         if (skip_dead_blocks) {
8158                 original_bb = bb = mono_basic_block_split (method, &cfg->error);
8159                 CHECK_CFG_ERROR;
8160                 g_assert (bb);
8161         }
8162
8163         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8164         stack_start = sp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8165
8166         ins_flag = 0;
8167         start_new_bblock = 0;
8168         cfg->cbb = bblock;
8169         while (ip < end) {
8170                 if (cfg->method == method)
8171                         cfg->real_offset = ip - header->code;
8172                 else
8173                         cfg->real_offset = inline_offset;
8174                 cfg->ip = ip;
8175
8176                 context_used = 0;
8177
8178                 if (start_new_bblock) {
8179                         bblock->cil_length = ip - bblock->cil_code;
8180                         if (start_new_bblock == 2) {
8181                                 g_assert (ip == tblock->cil_code);
8182                         } else {
8183                                 GET_BBLOCK (cfg, tblock, ip);
8184                         }
8185                         bblock->next_bb = tblock;
8186                         bblock = tblock;
8187                         cfg->cbb = bblock;
8188                         start_new_bblock = 0;
8189                         for (i = 0; i < bblock->in_scount; ++i) {
8190                                 if (cfg->verbose_level > 3)
8191                                         printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
8192                                 EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
8193                                 *sp++ = ins;
8194                         }
8195                         if (class_inits)
8196                                 g_slist_free (class_inits);
8197                         class_inits = NULL;
8198                 } else {
8199                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != bblock)) {
8200                                 link_bblock (cfg, bblock, tblock);
8201                                 if (sp != stack_start) {
8202                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8203                                         sp = stack_start;
8204                                         CHECK_UNVERIFIABLE (cfg);
8205                                 }
8206                                 bblock->next_bb = tblock;
8207                                 bblock = tblock;
8208                                 cfg->cbb = bblock;
8209                                 for (i = 0; i < bblock->in_scount; ++i) {
8210                                         if (cfg->verbose_level > 3)
8211                                                 printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
8212                                         EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
8213                                         *sp++ = ins;
8214                                 }
8215                                 g_slist_free (class_inits);
8216                                 class_inits = NULL;
8217                         }
8218                 }
8219
8220                 if (skip_dead_blocks) {
8221                         int ip_offset = ip - header->code;
8222
8223                         if (ip_offset == bb->end)
8224                                 bb = bb->next;
8225
8226                         if (bb->dead) {
8227                                 int op_size = mono_opcode_size (ip, end);
8228                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8229
8230                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8231
8232                                 if (ip_offset + op_size == bb->end) {
8233                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8234                                         MONO_ADD_INS (bblock, ins);
8235                                         start_new_bblock = 1;
8236                                 }
8237
8238                                 ip += op_size;
8239                                 continue;
8240                         }
8241                 }
8242                 /*
8243                  * Sequence points are points where the debugger can place a breakpoint.
8244                  * Currently, we generate these automatically at points where the IL
8245                  * stack is empty.
8246                  */
8247                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8248                         /*
8249                          * Make methods interruptable at the beginning, and at the targets of
8250                          * backward branches.
8251                          * Also, do this at the start of every bblock in methods with clauses too,
8252                          * to be able to handle instructions with inprecise control flow like
8253                          * throw/endfinally.
8254                          * Backward branches are handled at the end of method-to-ir ().
8255                          */
8256                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8257
8258                         /* Avoid sequence points on empty IL like .volatile */
8259                         // FIXME: Enable this
8260                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8261                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8262                         if (sp != stack_start)
8263                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8264                         MONO_ADD_INS (cfg->cbb, ins);
8265
8266                         if (sym_seq_points)
8267                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8268                 }
8269
8270                 bblock->real_offset = cfg->real_offset;
8271
8272                 if ((cfg->method == method) && cfg->coverage_info) {
8273                         guint32 cil_offset = ip - header->code;
8274                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8275
8276                         /* TODO: Use an increment here */
8277 #if defined(TARGET_X86)
8278                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8279                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8280                         ins->inst_imm = 1;
8281                         MONO_ADD_INS (cfg->cbb, ins);
8282 #else
8283                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8284                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8285 #endif
8286                 }
8287
8288                 if (cfg->verbose_level > 3)
8289                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8290
8291                 switch (*ip) {
8292                 case CEE_NOP:
8293                         if (seq_points && !sym_seq_points && sp != stack_start) {
8294                                 /*
8295                                  * The C# compiler uses these nops to notify the JIT that it should
8296                                  * insert seq points.
8297                                  */
8298                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8299                                 MONO_ADD_INS (cfg->cbb, ins);
8300                         }
8301                         if (cfg->keep_cil_nops)
8302                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8303                         else
8304                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8305                         ip++;
8306                         MONO_ADD_INS (bblock, ins);
8307                         break;
8308                 case CEE_BREAK:
8309                         if (should_insert_brekpoint (cfg->method)) {
8310                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8311                         } else {
8312                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8313                         }
8314                         ip++;
8315                         MONO_ADD_INS (bblock, ins);
8316                         break;
8317                 case CEE_LDARG_0:
8318                 case CEE_LDARG_1:
8319                 case CEE_LDARG_2:
8320                 case CEE_LDARG_3:
8321                         CHECK_STACK_OVF (1);
8322                         n = (*ip)-CEE_LDARG_0;
8323                         CHECK_ARG (n);
8324                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8325                         ip++;
8326                         *sp++ = ins;
8327                         break;
8328                 case CEE_LDLOC_0:
8329                 case CEE_LDLOC_1:
8330                 case CEE_LDLOC_2:
8331                 case CEE_LDLOC_3:
8332                         CHECK_STACK_OVF (1);
8333                         n = (*ip)-CEE_LDLOC_0;
8334                         CHECK_LOCAL (n);
8335                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8336                         ip++;
8337                         *sp++ = ins;
8338                         break;
8339                 case CEE_STLOC_0:
8340                 case CEE_STLOC_1:
8341                 case CEE_STLOC_2:
8342                 case CEE_STLOC_3: {
8343                         CHECK_STACK (1);
8344                         n = (*ip)-CEE_STLOC_0;
8345                         CHECK_LOCAL (n);
8346                         --sp;
8347                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8348                                 UNVERIFIED;
8349                         emit_stloc_ir (cfg, sp, header, n);
8350                         ++ip;
8351                         inline_costs += 1;
8352                         break;
8353                         }
8354                 case CEE_LDARG_S:
8355                         CHECK_OPSIZE (2);
8356                         CHECK_STACK_OVF (1);
8357                         n = ip [1];
8358                         CHECK_ARG (n);
8359                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8360                         *sp++ = ins;
8361                         ip += 2;
8362                         break;
8363                 case CEE_LDARGA_S:
8364                         CHECK_OPSIZE (2);
8365                         CHECK_STACK_OVF (1);
8366                         n = ip [1];
8367                         CHECK_ARG (n);
8368                         NEW_ARGLOADA (cfg, ins, n);
8369                         MONO_ADD_INS (cfg->cbb, ins);
8370                         *sp++ = ins;
8371                         ip += 2;
8372                         break;
8373                 case CEE_STARG_S:
8374                         CHECK_OPSIZE (2);
8375                         CHECK_STACK (1);
8376                         --sp;
8377                         n = ip [1];
8378                         CHECK_ARG (n);
8379                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8380                                 UNVERIFIED;
8381                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8382                         ip += 2;
8383                         break;
8384                 case CEE_LDLOC_S:
8385                         CHECK_OPSIZE (2);
8386                         CHECK_STACK_OVF (1);
8387                         n = ip [1];
8388                         CHECK_LOCAL (n);
8389                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8390                         *sp++ = ins;
8391                         ip += 2;
8392                         break;
8393                 case CEE_LDLOCA_S: {
8394                         unsigned char *tmp_ip;
8395                         CHECK_OPSIZE (2);
8396                         CHECK_STACK_OVF (1);
8397                         CHECK_LOCAL (ip [1]);
8398
8399                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8400                                 ip = tmp_ip;
8401                                 inline_costs += 1;
8402                                 break;
8403                         }
8404
8405                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8406                         *sp++ = ins;
8407                         ip += 2;
8408                         break;
8409                 }
8410                 case CEE_STLOC_S:
8411                         CHECK_OPSIZE (2);
8412                         CHECK_STACK (1);
8413                         --sp;
8414                         CHECK_LOCAL (ip [1]);
8415                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8416                                 UNVERIFIED;
8417                         emit_stloc_ir (cfg, sp, header, ip [1]);
8418                         ip += 2;
8419                         inline_costs += 1;
8420                         break;
8421                 case CEE_LDNULL:
8422                         CHECK_STACK_OVF (1);
8423                         EMIT_NEW_PCONST (cfg, ins, NULL);
8424                         ins->type = STACK_OBJ;
8425                         ++ip;
8426                         *sp++ = ins;
8427                         break;
8428                 case CEE_LDC_I4_M1:
8429                         CHECK_STACK_OVF (1);
8430                         EMIT_NEW_ICONST (cfg, ins, -1);
8431                         ++ip;
8432                         *sp++ = ins;
8433                         break;
8434                 case CEE_LDC_I4_0:
8435                 case CEE_LDC_I4_1:
8436                 case CEE_LDC_I4_2:
8437                 case CEE_LDC_I4_3:
8438                 case CEE_LDC_I4_4:
8439                 case CEE_LDC_I4_5:
8440                 case CEE_LDC_I4_6:
8441                 case CEE_LDC_I4_7:
8442                 case CEE_LDC_I4_8:
8443                         CHECK_STACK_OVF (1);
8444                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8445                         ++ip;
8446                         *sp++ = ins;
8447                         break;
8448                 case CEE_LDC_I4_S:
8449                         CHECK_OPSIZE (2);
8450                         CHECK_STACK_OVF (1);
8451                         ++ip;
8452                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8453                         ++ip;
8454                         *sp++ = ins;
8455                         break;
8456                 case CEE_LDC_I4:
8457                         CHECK_OPSIZE (5);
8458                         CHECK_STACK_OVF (1);
8459                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8460                         ip += 5;
8461                         *sp++ = ins;
8462                         break;
8463                 case CEE_LDC_I8:
8464                         CHECK_OPSIZE (9);
8465                         CHECK_STACK_OVF (1);
8466                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8467                         ins->type = STACK_I8;
8468                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8469                         ++ip;
8470                         ins->inst_l = (gint64)read64 (ip);
8471                         MONO_ADD_INS (bblock, ins);
8472                         ip += 8;
8473                         *sp++ = ins;
8474                         break;
8475                 case CEE_LDC_R4: {
8476                         float *f;
8477                         gboolean use_aotconst = FALSE;
8478
8479 #ifdef TARGET_POWERPC
8480                         /* FIXME: Clean this up */
8481                         if (cfg->compile_aot)
8482                                 use_aotconst = TRUE;
8483 #endif
8484
8485                         /* FIXME: we should really allocate this only late in the compilation process */
8486                         f = mono_domain_alloc (cfg->domain, sizeof (float));
8487                         CHECK_OPSIZE (5);
8488                         CHECK_STACK_OVF (1);
8489
8490                         if (use_aotconst) {
8491                                 MonoInst *cons;
8492                                 int dreg;
8493
8494                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8495
8496                                 dreg = alloc_freg (cfg);
8497                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8498                                 ins->type = cfg->r4_stack_type;
8499                         } else {
8500                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8501                                 ins->type = cfg->r4_stack_type;
8502                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8503                                 ins->inst_p0 = f;
8504                                 MONO_ADD_INS (bblock, ins);
8505                         }
8506                         ++ip;
8507                         readr4 (ip, f);
8508                         ip += 4;
8509                         *sp++ = ins;
8510                         break;
8511                 }
8512                 case CEE_LDC_R8: {
8513                         double *d;
8514                         gboolean use_aotconst = FALSE;
8515
8516 #ifdef TARGET_POWERPC
8517                         /* FIXME: Clean this up */
8518                         if (cfg->compile_aot)
8519                                 use_aotconst = TRUE;
8520 #endif
8521
8522                         /* FIXME: we should really allocate this only late in the compilation process */
8523                         d = mono_domain_alloc (cfg->domain, sizeof (double));
8524                         CHECK_OPSIZE (9);
8525                         CHECK_STACK_OVF (1);
8526
8527                         if (use_aotconst) {
8528                                 MonoInst *cons;
8529                                 int dreg;
8530
8531                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8532
8533                                 dreg = alloc_freg (cfg);
8534                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8535                                 ins->type = STACK_R8;
8536                         } else {
8537                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8538                                 ins->type = STACK_R8;
8539                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8540                                 ins->inst_p0 = d;
8541                                 MONO_ADD_INS (bblock, ins);
8542                         }
8543                         ++ip;
8544                         readr8 (ip, d);
8545                         ip += 8;
8546                         *sp++ = ins;
8547                         break;
8548                 }
8549                 case CEE_DUP: {
8550                         MonoInst *temp, *store;
8551                         CHECK_STACK (1);
8552                         CHECK_STACK_OVF (1);
8553                         sp--;
8554                         ins = *sp;
8555
8556                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8557                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8558
8559                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8560                         *sp++ = ins;
8561
8562                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8563                         *sp++ = ins;
8564
8565                         ++ip;
8566                         inline_costs += 2;
8567                         break;
8568                 }
8569                 case CEE_POP:
8570                         CHECK_STACK (1);
8571                         ip++;
8572                         --sp;
8573
8574 #ifdef TARGET_X86
8575                         if (sp [0]->type == STACK_R8)
8576                                 /* we need to pop the value from the x86 FP stack */
8577                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8578 #endif
8579                         break;
8580                 case CEE_JMP: {
8581                         MonoCallInst *call;
8582
8583                         INLINE_FAILURE ("jmp");
8584                         GSHAREDVT_FAILURE (*ip);
8585
8586                         CHECK_OPSIZE (5);
8587                         if (stack_start != sp)
8588                                 UNVERIFIED;
8589                         token = read32 (ip + 1);
8590                         /* FIXME: check the signature matches */
8591                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8592
8593                         if (!cmethod || mono_loader_get_last_error ())
8594                                 LOAD_ERROR;
8595
8596                         if (cfg->generic_sharing_context && mono_method_check_context_used (cmethod))
8597                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8598
8599                         if (mono_security_cas_enabled ())
8600                                 CHECK_CFG_EXCEPTION;
8601
8602                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8603
8604                         if (ARCH_HAVE_OP_TAIL_CALL) {
8605                                 MonoMethodSignature *fsig = mono_method_signature (cmethod);
8606                                 int i, n;
8607
8608                                 /* Handle tail calls similarly to calls */
8609                                 n = fsig->param_count + fsig->hasthis;
8610
8611                                 DISABLE_AOT (cfg);
8612
8613                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8614                                 call->method = cmethod;
8615                                 call->tail_call = TRUE;
8616                                 call->signature = mono_method_signature (cmethod);
8617                                 call->args = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8618                                 call->inst.inst_p0 = cmethod;
8619                                 for (i = 0; i < n; ++i)
8620                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8621
8622                                 mono_arch_emit_call (cfg, call);
8623                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8624                                 MONO_ADD_INS (bblock, (MonoInst*)call);
8625                         } else {
8626                                 for (i = 0; i < num_args; ++i)
8627                                         /* Prevent arguments from being optimized away */
8628                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8629
8630                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8631                                 ins = (MonoInst*)call;
8632                                 ins->inst_p0 = cmethod;
8633                                 MONO_ADD_INS (bblock, ins);
8634                         }
8635
8636                         ip += 5;
8637                         start_new_bblock = 1;
8638                         break;
8639                 }
8640                 case CEE_CALLI:
8641                 case CEE_CALL:
8642                 case CEE_CALLVIRT: {
8643                         MonoInst *addr = NULL;
8644                         MonoMethodSignature *fsig = NULL;
8645                         int array_rank = 0;
8646                         int virtual = *ip == CEE_CALLVIRT;
8647                         int calli = *ip == CEE_CALLI;
8648                         gboolean pass_imt_from_rgctx = FALSE;
8649                         MonoInst *imt_arg = NULL;
8650                         MonoInst *keep_this_alive = NULL;
8651                         gboolean pass_vtable = FALSE;
8652                         gboolean pass_mrgctx = FALSE;
8653                         MonoInst *vtable_arg = NULL;
8654                         gboolean check_this = FALSE;
8655                         gboolean supported_tail_call = FALSE;
8656                         gboolean tail_call = FALSE;
8657                         gboolean need_seq_point = FALSE;
8658                         guint32 call_opcode = *ip;
8659                         gboolean emit_widen = TRUE;
8660                         gboolean push_res = TRUE;
8661                         gboolean skip_ret = FALSE;
8662                         gboolean delegate_invoke = FALSE;
8663
8664                         CHECK_OPSIZE (5);
8665                         token = read32 (ip + 1);
8666
8667                         ins = NULL;
8668
8669                         if (calli) {
8670                                 //GSHAREDVT_FAILURE (*ip);
8671                                 cmethod = NULL;
8672                                 CHECK_STACK (1);
8673                                 --sp;
8674                                 addr = *sp;
8675                                 fsig = mini_get_signature (method, token, generic_context);
8676                                 n = fsig->param_count + fsig->hasthis;
8677
8678                                 if (method->dynamic && fsig->pinvoke) {
8679                                         MonoInst *args [3];
8680
8681                                         /*
8682                                          * This is a call through a function pointer using a pinvoke
8683                                          * signature. Have to create a wrapper and call that instead.
8684                                          * FIXME: This is very slow, need to create a wrapper at JIT time
8685                                          * instead based on the signature.
8686                                          */
8687                                         EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8688                                         EMIT_NEW_PCONST (cfg, args [1], fsig);
8689                                         args [2] = addr;
8690                                         addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8691                                 }
8692                         } else {
8693                                 MonoMethod *cil_method;
8694
8695                                 cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8696                                 cil_method = cmethod;
8697
8698                                 if (constrained_call) {
8699                                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
8700                                                 if (cfg->verbose_level > 2)
8701                                                         printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_call));
8702                                                 if (!((constrained_call->byval_arg.type == MONO_TYPE_VAR ||
8703                                                            constrained_call->byval_arg.type == MONO_TYPE_MVAR) &&
8704                                                           cfg->generic_sharing_context)) {
8705                                                         cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_call, generic_context, &cfg->error);
8706                                                         CHECK_CFG_ERROR;
8707                                                 }
8708                                         } else {
8709                                                 if (cfg->verbose_level > 2)
8710                                                         printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_call));
8711
8712                                                 if ((constrained_call->byval_arg.type == MONO_TYPE_VAR || constrained_call->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
8713                                                         /*
8714                                                          * This is needed since get_method_constrained can't find
8715                                                          * the method in klass representing a type var.
8716                                                          * The type var is guaranteed to be a reference type in this
8717                                                          * case.
8718                                                          */
8719                                                         if (!mini_is_gsharedvt_klass (cfg, constrained_call))
8720                                                                 g_assert (!cmethod->klass->valuetype);
8721                                                 } else {
8722                                                         cmethod = mono_get_method_constrained_checked (image, token, constrained_call, generic_context, &cil_method, &cfg->error);
8723                                                         CHECK_CFG_ERROR;
8724                                                 }
8725                                         }
8726                                 }
8727
8728                                 if (!cmethod || mono_loader_get_last_error ())
8729                                         LOAD_ERROR;
8730                                 if (!dont_verify && !cfg->skip_visibility) {
8731                                         MonoMethod *target_method = cil_method;
8732                                         if (method->is_inflated) {
8733                                                 target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
8734                                         }
8735                                         if (!mono_method_can_access_method (method_definition, target_method) &&
8736                                                 !mono_method_can_access_method (method, cil_method))
8737                                                 METHOD_ACCESS_FAILURE (method, cil_method);
8738                                 }
8739
8740                                 if (mono_security_core_clr_enabled ())
8741                                         ensure_method_is_allowed_to_call_method (cfg, method, cil_method, bblock, ip);
8742
8743                                 if (!virtual && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8744                                         /* MS.NET seems to silently convert this to a callvirt */
8745                                         virtual = 1;
8746
8747                                 {
8748                                         /*
8749                                          * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8750                                          * converts to a callvirt.
8751                                          *
8752                                          * tests/bug-515884.il is an example of this behavior
8753                                          */
8754                                         const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8755                                         const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8756                                         if (!virtual && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8757                                                 virtual = 1;
8758                                 }
8759
8760                                 if (!cmethod->klass->inited)
8761                                         if (!mono_class_init (cmethod->klass))
8762                                                 TYPE_LOAD_ERROR (cmethod->klass);
8763
8764                                 if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8765                                     mini_class_is_system_array (cmethod->klass)) {
8766                                         array_rank = cmethod->klass->rank;
8767                                         fsig = mono_method_signature (cmethod);
8768                                 } else {
8769                                         fsig = mono_method_signature (cmethod);
8770
8771                                         if (!fsig)
8772                                                 LOAD_ERROR;
8773
8774                                         if (fsig->pinvoke) {
8775                                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod,
8776                                                         check_for_pending_exc, cfg->compile_aot);
8777                                                 fsig = mono_method_signature (wrapper);
8778                                         } else if (constrained_call) {
8779                                                 fsig = mono_method_signature (cmethod);
8780                                         } else {
8781                                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8782                                                 CHECK_CFG_ERROR;
8783                                         }
8784                                 }
8785
8786                                 mono_save_token_info (cfg, image, token, cil_method);
8787
8788                                 if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8789                                         need_seq_point = TRUE;
8790
8791                                 n = fsig->param_count + fsig->hasthis;
8792
8793                                 /* Don't support calls made using type arguments for now */
8794                                 /*
8795                                 if (cfg->gsharedvt) {
8796                                         if (mini_is_gsharedvt_signature (cfg, fsig))
8797                                                 GSHAREDVT_FAILURE (*ip);
8798                                 }
8799                                 */
8800
8801                                 if (mono_security_cas_enabled ()) {
8802                                         if (check_linkdemand (cfg, method, cmethod))
8803                                                 INLINE_FAILURE ("linkdemand");
8804                                         CHECK_CFG_EXCEPTION;
8805                                 }
8806
8807                                 if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8808                                         g_assert_not_reached ();
8809                         }
8810
8811                         if (!cfg->generic_sharing_context && cmethod && cmethod->klass->generic_container)
8812                                 UNVERIFIED;
8813
8814                         if (!cfg->generic_sharing_context && cmethod)
8815                                 g_assert (!mono_method_check_context_used (cmethod));
8816
8817                         CHECK_STACK (n);
8818
8819                         //g_assert (!virtual || fsig->hasthis);
8820
8821                         sp -= n;
8822
8823                         if (constrained_call) {
8824                                 if (mini_is_gsharedvt_klass (cfg, constrained_call)) {
8825                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_call->valuetype && cmethod->klass->valuetype) {
8826                                                 /* The 'Own method' case below */
8827                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
8828                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8829                                         } else {
8830                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_call, &emit_widen, &bblock);
8831                                                 CHECK_CFG_EXCEPTION;
8832                                                 g_assert (ins);
8833                                                 goto call_end;
8834                                         }
8835                                 }
8836
8837                                 /*
8838                                  * We have the `constrained.' prefix opcode.
8839                                  */
8840                                 if (constrained_call->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8841                                         /*
8842                                          * The type parameter is instantiated as a valuetype,
8843                                          * but that type doesn't override the method we're
8844                                          * calling, so we need to box `this'.
8845                                          */
8846                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_call->byval_arg, sp [0]->dreg, 0);
8847                                         ins->klass = constrained_call;
8848                                         sp [0] = handle_box (cfg, ins, constrained_call, mono_class_check_context_used (constrained_call), &bblock);
8849                                         CHECK_CFG_EXCEPTION;
8850                                 } else if (!constrained_call->valuetype) {
8851                                         int dreg = alloc_ireg_ref (cfg);
8852
8853                                         /*
8854                                          * The type parameter is instantiated as a reference
8855                                          * type.  We have a managed pointer on the stack, so
8856                                          * we need to dereference it here.
8857                                          */
8858                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8859                                         ins->type = STACK_OBJ;
8860                                         sp [0] = ins;
8861                                 } else {
8862                                         if (cmethod->klass->valuetype) {
8863                                                 /* Own method */
8864                                         } else {
8865                                                 /* Interface method */
8866                                                 int ioffset, slot;
8867
8868                                                 mono_class_setup_vtable (constrained_call);
8869                                                 CHECK_TYPELOAD (constrained_call);
8870                                                 ioffset = mono_class_interface_offset (constrained_call, cmethod->klass);
8871                                                 if (ioffset == -1)
8872                                                         TYPE_LOAD_ERROR (constrained_call);
8873                                                 slot = mono_method_get_vtable_slot (cmethod);
8874                                                 if (slot == -1)
8875                                                         TYPE_LOAD_ERROR (cmethod->klass);
8876                                                 cmethod = constrained_call->vtable [ioffset + slot];
8877
8878                                                 if (cmethod->klass == mono_defaults.enum_class) {
8879                                                         /* Enum implements some interfaces, so treat this as the first case */
8880                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_call->byval_arg, sp [0]->dreg, 0);
8881                                                         ins->klass = constrained_call;
8882                                                         sp [0] = handle_box (cfg, ins, constrained_call, mono_class_check_context_used (constrained_call), &bblock);
8883                                                         CHECK_CFG_EXCEPTION;
8884                                                 }
8885                                         }
8886                                         virtual = 0;
8887                                 }
8888                                 constrained_call = NULL;
8889                         }
8890
8891                         if (!calli && check_call_signature (cfg, fsig, sp))
8892                                 UNVERIFIED;
8893
8894 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
8895                         if (cmethod && (cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8896                                 delegate_invoke = TRUE;
8897 #endif
8898
8899                         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8900                                 bblock = cfg->cbb;
8901                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8902                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8903                                         emit_widen = FALSE;
8904                                 }
8905
8906                                 goto call_end;
8907                         }
8908
8909                         /*
8910                          * If the callee is a shared method, then its static cctor
8911                          * might not get called after the call was patched.
8912                          */
8913                         if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
8914                                 emit_generic_class_init (cfg, cmethod->klass);
8915                                 CHECK_TYPELOAD (cmethod->klass);
8916                         }
8917
8918                         if (cmethod)
8919                                 check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8920
8921                         if (cfg->generic_sharing_context && cmethod) {
8922                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8923
8924                                 context_used = mini_method_check_context_used (cfg, cmethod);
8925
8926                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
8927                                         /* Generic method interface
8928                                            calls are resolved via a
8929                                            helper function and don't
8930                                            need an imt. */
8931                                         if (!cmethod_context || !cmethod_context->method_inst)
8932                                                 pass_imt_from_rgctx = TRUE;
8933                                 }
8934
8935                                 /*
8936                                  * If a shared method calls another
8937                                  * shared method then the caller must
8938                                  * have a generic sharing context
8939                                  * because the magic trampoline
8940                                  * requires it.  FIXME: We shouldn't
8941                                  * have to force the vtable/mrgctx
8942                                  * variable here.  Instead there
8943                                  * should be a flag in the cfg to
8944                                  * request a generic sharing context.
8945                                  */
8946                                 if (context_used &&
8947                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
8948                                         mono_get_vtable_var (cfg);
8949                         }
8950
8951                         if (pass_vtable) {
8952                                 if (context_used) {
8953                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8954                                 } else {
8955                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8956
8957                                         CHECK_TYPELOAD (cmethod->klass);
8958                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8959                                 }
8960                         }
8961
8962                         if (pass_mrgctx) {
8963                                 g_assert (!vtable_arg);
8964
8965                                 if (!cfg->compile_aot) {
8966                                         /*
8967                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8968                                          * for type load errors before.
8969                                          */
8970                                         mono_class_setup_vtable (cmethod->klass);
8971                                         CHECK_TYPELOAD (cmethod->klass);
8972                                 }
8973
8974                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8975
8976                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8977                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8978                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8979                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8980                                         if (virtual)
8981                                                 check_this = TRUE;
8982                                         virtual = 0;
8983                                 }
8984                         }
8985
8986                         if (pass_imt_from_rgctx) {
8987                                 g_assert (!pass_vtable);
8988                                 g_assert (cmethod);
8989
8990                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8991                                         cmethod, MONO_RGCTX_INFO_METHOD);
8992                         }
8993
8994                         if (check_this)
8995                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8996
8997                         /* Calling virtual generic methods */
8998                         if (cmethod && virtual &&
8999                             (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9000                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9001                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9002                             fsig->generic_param_count &&
9003                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))) {
9004                                 MonoInst *this_temp, *this_arg_temp, *store;
9005                                 MonoInst *iargs [4];
9006                                 gboolean use_imt = FALSE;
9007
9008                                 g_assert (fsig->is_inflated);
9009
9010                                 /* Prevent inlining of methods that contain indirect calls */
9011                                 INLINE_FAILURE ("virtual generic call");
9012
9013                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
9014                                         GSHAREDVT_FAILURE (*ip);
9015
9016 #if MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK && defined(MONO_ARCH_GSHARED_SUPPORTED)
9017                                 if (cmethod->wrapper_type == MONO_WRAPPER_NONE && mono_use_imt)
9018                                         use_imt = TRUE;
9019 #endif
9020
9021                                 if (use_imt) {
9022                                         g_assert (!imt_arg);
9023                                         if (!context_used)
9024                                                 g_assert (cmethod->is_inflated);
9025                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9026                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9027                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9028                                 } else {
9029                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9030                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9031                                         MONO_ADD_INS (bblock, store);
9032
9033                                         /* FIXME: This should be a managed pointer */
9034                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9035
9036                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9037                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9038                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9039                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9040                                         addr = mono_emit_jit_icall (cfg,
9041                                                                                                 mono_helper_compile_generic_method, iargs);
9042
9043                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9044
9045                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9046                                 }
9047
9048                                 goto call_end;
9049                         }
9050
9051                         /*
9052                          * Implement a workaround for the inherent races involved in locking:
9053                          * Monitor.Enter ()
9054                          * try {
9055                          * } finally {
9056                          *    Monitor.Exit ()
9057                          * }
9058                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9059                          * try block, the Exit () won't be executed, see:
9060                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9061                          * To work around this, we extend such try blocks to include the last x bytes
9062                          * of the Monitor.Enter () call.
9063                          */
9064                         if (cmethod && cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9065                                 MonoBasicBlock *tbb;
9066
9067                                 GET_BBLOCK (cfg, tbb, ip + 5);
9068                                 /*
9069                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9070                                  * from Monitor.Enter like ArgumentNullException.
9071                                  */
9072                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9073                                         /* Mark this bblock as needing to be extended */
9074                                         tbb->extend_try_block = TRUE;
9075                                 }
9076                         }
9077
9078                         /* Conversion to a JIT intrinsic */
9079                         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9080                                 bblock = cfg->cbb;
9081                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9082                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9083                                         emit_widen = FALSE;
9084                                 }
9085                                 goto call_end;
9086                         }
9087
9088                         /* Inlining */
9089                         if (cmethod && (cfg->opt & MONO_OPT_INLINE) &&
9090                                 (!virtual || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9091                             mono_method_check_inlining (cfg, cmethod)) {
9092                                 int costs;
9093                                 gboolean always = FALSE;
9094
9095                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9096                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9097                                         /* Prevent inlining of methods that call wrappers */
9098                                         INLINE_FAILURE ("wrapper call");
9099                                         cmethod = mono_marshal_get_native_wrapper (cmethod, check_for_pending_exc, FALSE);
9100                                         always = TRUE;
9101                                 }
9102
9103                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always, &bblock);
9104                                 if (costs) {
9105                                         cfg->real_offset += 5;
9106
9107                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9108                                                 /* *sp is already set by inline_method */
9109                                                 sp++;
9110                                                 push_res = FALSE;
9111                                         }
9112
9113                                         inline_costs += costs;
9114
9115                                         goto call_end;
9116                                 }
9117                         }
9118
9119                         /* Tail recursion elimination */
9120                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9121                                 gboolean has_vtargs = FALSE;
9122                                 int i;
9123
9124                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9125                                 INLINE_FAILURE ("tail call");
9126
9127                                 /* keep it simple */
9128                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9129                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9130                                                 has_vtargs = TRUE;
9131                                 }
9132
9133                                 if (!has_vtargs) {
9134                                         for (i = 0; i < n; ++i)
9135                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9136                                         MONO_INST_NEW (cfg, ins, OP_BR);
9137                                         MONO_ADD_INS (bblock, ins);
9138                                         tblock = start_bblock->out_bb [0];
9139                                         link_bblock (cfg, bblock, tblock);
9140                                         ins->inst_target_bb = tblock;
9141                                         start_new_bblock = 1;
9142
9143                                         /* skip the CEE_RET, too */
9144                                         if (ip_in_bb (cfg, bblock, ip + 5))
9145                                                 skip_ret = TRUE;
9146                                         push_res = FALSE;
9147                                         goto call_end;
9148                                 }
9149                         }
9150
9151                         inline_costs += 10 * num_calls++;
9152
9153                         /*
9154                          * Making generic calls out of gsharedvt methods.
9155                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9156                          * patching gshared method addresses into a gsharedvt method.
9157                          */
9158                         if (cmethod && cfg->gsharedvt && (mini_is_gsharedvt_signature (cfg, fsig) || cmethod->is_inflated || cmethod->klass->generic_class)) {
9159                                 MonoRgctxInfoType info_type;
9160
9161                                 if (virtual) {
9162                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9163                                                 //GSHAREDVT_FAILURE (*ip);
9164                                         // disable for possible remoting calls
9165                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9166                                                 GSHAREDVT_FAILURE (*ip);
9167                                         if (fsig->generic_param_count) {
9168                                                 /* virtual generic call */
9169                                                 g_assert (mono_use_imt);
9170                                                 g_assert (!imt_arg);
9171                                                 /* Same as the virtual generic case above */
9172                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9173                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9174                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9175                                                 vtable_arg = NULL;
9176                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9177                                                 /* This can happen when we call a fully instantiated iface method */
9178                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9179                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9180                                                 vtable_arg = NULL;
9181                                         }
9182                                 }
9183
9184                                 if (cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY)
9185                                         /* test_0_multi_dim_arrays () in gshared.cs */
9186                                         GSHAREDVT_FAILURE (*ip);
9187
9188                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9189                                         keep_this_alive = sp [0];
9190
9191                                 if (virtual && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9192                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9193                                 else
9194                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9195                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9196
9197                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9198                                 goto call_end;
9199                         } else if (calli && cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
9200                                 /*
9201                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9202                                  */
9203                                 MonoInst *callee = addr;
9204
9205                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9206                                         /* Not tested */
9207                                         GSHAREDVT_FAILURE (*ip);
9208
9209                                 addr = emit_get_rgctx_sig (cfg, context_used,
9210                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9211                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9212                                 goto call_end;
9213                         }
9214
9215                         /* Generic sharing */
9216
9217                         /*
9218                          * Use this if the callee is gsharedvt sharable too, since
9219                          * at runtime we might find an instantiation so the call cannot
9220                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9221                          */
9222                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9223                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9224                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9225                                 (!virtual || MONO_METHOD_IS_FINAL (cmethod) ||
9226                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9227                                 INLINE_FAILURE ("gshared");
9228
9229                                 g_assert (cfg->generic_sharing_context && cmethod);
9230                                 g_assert (!addr);
9231
9232                                 /*
9233                                  * We are compiling a call to a
9234                                  * generic method from shared code,
9235                                  * which means that we have to look up
9236                                  * the method in the rgctx and do an
9237                                  * indirect call.
9238                                  */
9239                                 if (fsig->hasthis)
9240                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9241
9242                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9243                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9244                                 goto call_end;
9245                         }
9246
9247                         /* Indirect calls */
9248                         if (addr) {
9249                                 if (call_opcode == CEE_CALL)
9250                                         g_assert (context_used);
9251                                 else if (call_opcode == CEE_CALLI)
9252                                         g_assert (!vtable_arg);
9253                                 else
9254                                         /* FIXME: what the hell is this??? */
9255                                         g_assert (cmethod->flags & METHOD_ATTRIBUTE_FINAL ||
9256                                                         !(cmethod->flags & METHOD_ATTRIBUTE_FINAL));
9257
9258                                 /* Prevent inlining of methods with indirect calls */
9259                                 INLINE_FAILURE ("indirect call");
9260
9261                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9262                                         int info_type;
9263                                         gpointer info_data;
9264
9265                                         /*
9266                                          * Instead of emitting an indirect call, emit a direct call
9267                                          * with the contents of the aotconst as the patch info.
9268                                          */
9269                                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9270                                                 info_type = addr->inst_c1;
9271                                                 info_data = addr->inst_p0;
9272                                         } else {
9273                                                 info_type = addr->inst_right->inst_c1;
9274                                                 info_data = addr->inst_right->inst_left;
9275                                         }
9276
9277                                         if (info_type == MONO_PATCH_INFO_ICALL_ADDR || info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9278                                                 ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9279                                                 NULLIFY_INS (addr);
9280                                                 goto call_end;
9281                                         }
9282                                 }
9283                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9284                                 goto call_end;
9285                         }
9286
9287                         /* Array methods */
9288                         if (array_rank) {
9289                                 MonoInst *addr;
9290
9291                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9292                                         MonoInst *val = sp [fsig->param_count];
9293
9294                                         if (val->type == STACK_OBJ) {
9295                                                 MonoInst *iargs [2];
9296
9297                                                 iargs [0] = sp [0];
9298                                                 iargs [1] = val;
9299
9300                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9301                                         }
9302
9303                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9304                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9305                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9306                                                 emit_write_barrier (cfg, addr, val);
9307                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9308                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9309
9310                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9311                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9312                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9313                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9314                                         CHECK_TYPELOAD (cmethod->klass);
9315
9316                                         readonly = FALSE;
9317                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9318                                         ins = addr;
9319                                 } else {
9320                                         g_assert_not_reached ();
9321                                 }
9322
9323                                 emit_widen = FALSE;
9324                                 goto call_end;
9325                         }
9326
9327                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL);
9328                         if (ins)
9329                                 goto call_end;
9330
9331                         /* Tail prefix / tail call optimization */
9332
9333                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9334                         /* FIXME: runtime generic context pointer for jumps? */
9335                         /* FIXME: handle this for generic sharing eventually */
9336                         if (cmethod && (ins_flag & MONO_INST_TAILCALL) &&
9337                                 !vtable_arg && !cfg->generic_sharing_context && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9338                                 supported_tail_call = TRUE;
9339
9340                         if (supported_tail_call) {
9341                                 MonoCallInst *call;
9342
9343                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9344                                 INLINE_FAILURE ("tail call");
9345
9346                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9347
9348                                 if (ARCH_HAVE_OP_TAIL_CALL) {
9349                                         /* Handle tail calls similarly to normal calls */
9350                                         tail_call = TRUE;
9351                                 } else {
9352                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9353
9354                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9355                                         call->tail_call = TRUE;
9356                                         call->method = cmethod;
9357                                         call->signature = mono_method_signature (cmethod);
9358
9359                                         /*
9360                                          * We implement tail calls by storing the actual arguments into the
9361                                          * argument variables, then emitting a CEE_JMP.
9362                                          */
9363                                         for (i = 0; i < n; ++i) {
9364                                                 /* Prevent argument from being register allocated */
9365                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9366                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9367                                         }
9368                                         ins = (MonoInst*)call;
9369                                         ins->inst_p0 = cmethod;
9370                                         ins->inst_p1 = arg_array [0];
9371                                         MONO_ADD_INS (bblock, ins);
9372                                         link_bblock (cfg, bblock, end_bblock);
9373                                         start_new_bblock = 1;
9374
9375                                         // FIXME: Eliminate unreachable epilogs
9376
9377                                         /*
9378                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9379                                          * only reachable from this call.
9380                                          */
9381                                         GET_BBLOCK (cfg, tblock, ip + 5);
9382                                         if (tblock == bblock || tblock->in_count == 0)
9383                                                 skip_ret = TRUE;
9384                                         push_res = FALSE;
9385
9386                                         goto call_end;
9387                                 }
9388                         }
9389
9390                         /*
9391                          * Synchronized wrappers.
9392                          * Its hard to determine where to replace a method with its synchronized
9393                          * wrapper without causing an infinite recursion. The current solution is
9394                          * to add the synchronized wrapper in the trampolines, and to
9395                          * change the called method to a dummy wrapper, and resolve that wrapper
9396                          * to the real method in mono_jit_compile_method ().
9397                          */
9398                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9399                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9400                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9401                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9402                         }
9403
9404                         /* Common call */
9405                         INLINE_FAILURE ("call");
9406                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual ? sp [0] : NULL,
9407                                                                                           imt_arg, vtable_arg);
9408
9409                         if (tail_call) {
9410                                 link_bblock (cfg, bblock, end_bblock);
9411                                 start_new_bblock = 1;
9412
9413                                 // FIXME: Eliminate unreachable epilogs
9414
9415                                 /*
9416                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9417                                  * only reachable from this call.
9418                                  */
9419                                 GET_BBLOCK (cfg, tblock, ip + 5);
9420                                 if (tblock == bblock || tblock->in_count == 0)
9421                                         skip_ret = TRUE;
9422                                 push_res = FALSE;
9423                         }
9424
9425                         call_end:
9426
9427                         /* End of call, INS should contain the result of the call, if any */
9428
9429                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9430                                 g_assert (ins);
9431                                 if (emit_widen)
9432                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9433                                 else
9434                                         *sp++ = ins;
9435                         }
9436
9437                         if (keep_this_alive) {
9438                                 MonoInst *dummy_use;
9439
9440                                 /* See mono_emit_method_call_full () */
9441                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9442                         }
9443
9444                         CHECK_CFG_EXCEPTION;
9445
9446                         ip += 5;
9447                         if (skip_ret) {
9448                                 g_assert (*ip == CEE_RET);
9449                                 ip += 1;
9450                         }
9451                         ins_flag = 0;
9452                         constrained_call = NULL;
9453                         if (need_seq_point)
9454                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9455                         break;
9456                 }
9457                 case CEE_RET:
9458                         if (cfg->method != method) {
9459                                 /* return from inlined method */
9460                                 /*
9461                                  * If in_count == 0, that means the ret is unreachable due to
9462                                  * being preceeded by a throw. In that case, inline_method () will
9463                                  * handle setting the return value
9464                                  * (test case: test_0_inline_throw ()).
9465                                  */
9466                                 if (return_var && cfg->cbb->in_count) {
9467                                         MonoType *ret_type = mono_method_signature (method)->ret;
9468
9469                                         MonoInst *store;
9470                                         CHECK_STACK (1);
9471                                         --sp;
9472
9473                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9474                                                 UNVERIFIED;
9475
9476                                         //g_assert (returnvar != -1);
9477                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9478                                         cfg->ret_var_set = TRUE;
9479                                 }
9480                         } else {
9481                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9482
9483                                 if (cfg->lmf_var && cfg->cbb->in_count)
9484                                         emit_pop_lmf (cfg);
9485
9486                                 if (cfg->ret) {
9487                                         MonoType *ret_type = mini_replace_type (mono_method_signature (method)->ret);
9488
9489                                         if (seq_points && !sym_seq_points) {
9490                                                 /*
9491                                                  * Place a seq point here too even through the IL stack is not
9492                                                  * empty, so a step over on
9493                                                  * call <FOO>
9494                                                  * ret
9495                                                  * will work correctly.
9496                                                  */
9497                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9498                                                 MONO_ADD_INS (cfg->cbb, ins);
9499                                         }
9500
9501                                         g_assert (!return_var);
9502                                         CHECK_STACK (1);
9503                                         --sp;
9504
9505                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9506                                                 UNVERIFIED;
9507
9508                                         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
9509                                                 MonoInst *ret_addr;
9510
9511                                                 if (!cfg->vret_addr) {
9512                                                         MonoInst *ins;
9513
9514                                                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, (*sp));
9515                                                 } else {
9516                                                         EMIT_NEW_RETLOADA (cfg, ret_addr);
9517
9518                                                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, (*sp)->dreg);
9519                                                         ins->klass = mono_class_from_mono_type (ret_type);
9520                                                 }
9521                                         } else {
9522 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
9523                                                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
9524                                                         MonoInst *iargs [1];
9525                                                         MonoInst *conv;
9526
9527                                                         iargs [0] = *sp;
9528                                                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
9529                                                         mono_arch_emit_setret (cfg, method, conv);
9530                                                 } else {
9531                                                         mono_arch_emit_setret (cfg, method, *sp);
9532                                                 }
9533 #else
9534                                                 mono_arch_emit_setret (cfg, method, *sp);
9535 #endif
9536                                         }
9537                                 }
9538                         }
9539                         if (sp != stack_start)
9540                                 UNVERIFIED;
9541                         MONO_INST_NEW (cfg, ins, OP_BR);
9542                         ip++;
9543                         ins->inst_target_bb = end_bblock;
9544                         MONO_ADD_INS (bblock, ins);
9545                         link_bblock (cfg, bblock, end_bblock);
9546                         start_new_bblock = 1;
9547                         break;
9548                 case CEE_BR_S:
9549                         CHECK_OPSIZE (2);
9550                         MONO_INST_NEW (cfg, ins, OP_BR);
9551                         ip++;
9552                         target = ip + 1 + (signed char)(*ip);
9553                         ++ip;
9554                         GET_BBLOCK (cfg, tblock, target);
9555                         link_bblock (cfg, bblock, tblock);
9556                         ins->inst_target_bb = tblock;
9557                         if (sp != stack_start) {
9558                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9559                                 sp = stack_start;
9560                                 CHECK_UNVERIFIABLE (cfg);
9561                         }
9562                         MONO_ADD_INS (bblock, ins);
9563                         start_new_bblock = 1;
9564                         inline_costs += BRANCH_COST;
9565                         break;
9566                 case CEE_BEQ_S:
9567                 case CEE_BGE_S:
9568                 case CEE_BGT_S:
9569                 case CEE_BLE_S:
9570                 case CEE_BLT_S:
9571                 case CEE_BNE_UN_S:
9572                 case CEE_BGE_UN_S:
9573                 case CEE_BGT_UN_S:
9574                 case CEE_BLE_UN_S:
9575                 case CEE_BLT_UN_S:
9576                         CHECK_OPSIZE (2);
9577                         CHECK_STACK (2);
9578                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9579                         ip++;
9580                         target = ip + 1 + *(signed char*)ip;
9581                         ip++;
9582
9583                         ADD_BINCOND (NULL);
9584
9585                         sp = stack_start;
9586                         inline_costs += BRANCH_COST;
9587                         break;
9588                 case CEE_BR:
9589                         CHECK_OPSIZE (5);
9590                         MONO_INST_NEW (cfg, ins, OP_BR);
9591                         ip++;
9592
9593                         target = ip + 4 + (gint32)read32(ip);
9594                         ip += 4;
9595                         GET_BBLOCK (cfg, tblock, target);
9596                         link_bblock (cfg, bblock, tblock);
9597                         ins->inst_target_bb = tblock;
9598                         if (sp != stack_start) {
9599                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9600                                 sp = stack_start;
9601                                 CHECK_UNVERIFIABLE (cfg);
9602                         }
9603
9604                         MONO_ADD_INS (bblock, ins);
9605
9606                         start_new_bblock = 1;
9607                         inline_costs += BRANCH_COST;
9608                         break;
9609                 case CEE_BRFALSE_S:
9610                 case CEE_BRTRUE_S:
9611                 case CEE_BRFALSE:
9612                 case CEE_BRTRUE: {
9613                         MonoInst *cmp;
9614                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9615                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9616                         guint32 opsize = is_short ? 1 : 4;
9617
9618                         CHECK_OPSIZE (opsize);
9619                         CHECK_STACK (1);
9620                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9621                                 UNVERIFIED;
9622                         ip ++;
9623                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9624                         ip += opsize;
9625
9626                         sp--;
9627
9628                         GET_BBLOCK (cfg, tblock, target);
9629                         link_bblock (cfg, bblock, tblock);
9630                         GET_BBLOCK (cfg, tblock, ip);
9631                         link_bblock (cfg, bblock, tblock);
9632
9633                         if (sp != stack_start) {
9634                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9635                                 CHECK_UNVERIFIABLE (cfg);
9636                         }
9637
9638                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9639                         cmp->sreg1 = sp [0]->dreg;
9640                         type_from_op (cfg, cmp, sp [0], NULL);
9641                         CHECK_TYPE (cmp);
9642
9643 #if SIZEOF_REGISTER == 4
9644                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9645                                 /* Convert it to OP_LCOMPARE */
9646                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9647                                 ins->type = STACK_I8;
9648                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9649                                 ins->inst_l = 0;
9650                                 MONO_ADD_INS (bblock, ins);
9651                                 cmp->opcode = OP_LCOMPARE;
9652                                 cmp->sreg2 = ins->dreg;
9653                         }
9654 #endif
9655                         MONO_ADD_INS (bblock, cmp);
9656
9657                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9658                         type_from_op (cfg, ins, sp [0], NULL);
9659                         MONO_ADD_INS (bblock, ins);
9660                         ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9661                         GET_BBLOCK (cfg, tblock, target);
9662                         ins->inst_true_bb = tblock;
9663                         GET_BBLOCK (cfg, tblock, ip);
9664                         ins->inst_false_bb = tblock;
9665                         start_new_bblock = 2;
9666
9667                         sp = stack_start;
9668                         inline_costs += BRANCH_COST;
9669                         break;
9670                 }
9671                 case CEE_BEQ:
9672                 case CEE_BGE:
9673                 case CEE_BGT:
9674                 case CEE_BLE:
9675                 case CEE_BLT:
9676                 case CEE_BNE_UN:
9677                 case CEE_BGE_UN:
9678                 case CEE_BGT_UN:
9679                 case CEE_BLE_UN:
9680                 case CEE_BLT_UN:
9681                         CHECK_OPSIZE (5);
9682                         CHECK_STACK (2);
9683                         MONO_INST_NEW (cfg, ins, *ip);
9684                         ip++;
9685                         target = ip + 4 + (gint32)read32(ip);
9686                         ip += 4;
9687
9688                         ADD_BINCOND (NULL);
9689
9690                         sp = stack_start;
9691                         inline_costs += BRANCH_COST;
9692                         break;
9693                 case CEE_SWITCH: {
9694                         MonoInst *src1;
9695                         MonoBasicBlock **targets;
9696                         MonoBasicBlock *default_bblock;
9697                         MonoJumpInfoBBTable *table;
9698                         int offset_reg = alloc_preg (cfg);
9699                         int target_reg = alloc_preg (cfg);
9700                         int table_reg = alloc_preg (cfg);
9701                         int sum_reg = alloc_preg (cfg);
9702                         gboolean use_op_switch;
9703
9704                         CHECK_OPSIZE (5);
9705                         CHECK_STACK (1);
9706                         n = read32 (ip + 1);
9707                         --sp;
9708                         src1 = sp [0];
9709                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9710                                 UNVERIFIED;
9711
9712                         ip += 5;
9713                         CHECK_OPSIZE (n * sizeof (guint32));
9714                         target = ip + n * sizeof (guint32);
9715
9716                         GET_BBLOCK (cfg, default_bblock, target);
9717                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9718
9719                         targets = mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9720                         for (i = 0; i < n; ++i) {
9721                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9722                                 targets [i] = tblock;
9723                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9724                                 ip += 4;
9725                         }
9726
9727                         if (sp != stack_start) {
9728                                 /*
9729                                  * Link the current bb with the targets as well, so handle_stack_args
9730                                  * will set their in_stack correctly.
9731                                  */
9732                                 link_bblock (cfg, bblock, default_bblock);
9733                                 for (i = 0; i < n; ++i)
9734                                         link_bblock (cfg, bblock, targets [i]);
9735
9736                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9737                                 sp = stack_start;
9738                                 CHECK_UNVERIFIABLE (cfg);
9739                         }
9740
9741                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9742                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9743                         bblock = cfg->cbb;
9744
9745                         for (i = 0; i < n; ++i)
9746                                 link_bblock (cfg, bblock, targets [i]);
9747
9748                         table = mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9749                         table->table = targets;
9750                         table->table_size = n;
9751
9752                         use_op_switch = FALSE;
9753 #ifdef TARGET_ARM
9754                         /* ARM implements SWITCH statements differently */
9755                         /* FIXME: Make it use the generic implementation */
9756                         if (!cfg->compile_aot)
9757                                 use_op_switch = TRUE;
9758 #endif
9759
9760                         if (COMPILE_LLVM (cfg))
9761                                 use_op_switch = TRUE;
9762
9763                         cfg->cbb->has_jump_table = 1;
9764
9765                         if (use_op_switch) {
9766                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9767                                 ins->sreg1 = src1->dreg;
9768                                 ins->inst_p0 = table;
9769                                 ins->inst_many_bb = targets;
9770                                 ins->klass = GUINT_TO_POINTER (n);
9771                                 MONO_ADD_INS (cfg->cbb, ins);
9772                         } else {
9773                                 if (sizeof (gpointer) == 8)
9774                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9775                                 else
9776                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9777
9778 #if SIZEOF_REGISTER == 8
9779                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9780                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9781 #endif
9782
9783                                 if (cfg->compile_aot) {
9784                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9785                                 } else {
9786                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9787                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9788                                         ins->inst_p0 = table;
9789                                         ins->dreg = table_reg;
9790                                         MONO_ADD_INS (cfg->cbb, ins);
9791                                 }
9792
9793                                 /* FIXME: Use load_memindex */
9794                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9795                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9796                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9797                         }
9798                         start_new_bblock = 1;
9799                         inline_costs += (BRANCH_COST * 2);
9800                         break;
9801                 }
9802                 case CEE_LDIND_I1:
9803                 case CEE_LDIND_U1:
9804                 case CEE_LDIND_I2:
9805                 case CEE_LDIND_U2:
9806                 case CEE_LDIND_I4:
9807                 case CEE_LDIND_U4:
9808                 case CEE_LDIND_I8:
9809                 case CEE_LDIND_I:
9810                 case CEE_LDIND_R4:
9811                 case CEE_LDIND_R8:
9812                 case CEE_LDIND_REF:
9813                         CHECK_STACK (1);
9814                         --sp;
9815
9816                         switch (*ip) {
9817                         case CEE_LDIND_R4:
9818                         case CEE_LDIND_R8:
9819                                 dreg = alloc_freg (cfg);
9820                                 break;
9821                         case CEE_LDIND_I8:
9822                                 dreg = alloc_lreg (cfg);
9823                                 break;
9824                         case CEE_LDIND_REF:
9825                                 dreg = alloc_ireg_ref (cfg);
9826                                 break;
9827                         default:
9828                                 dreg = alloc_preg (cfg);
9829                         }
9830
9831                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
9832                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
9833                         if (*ip == CEE_LDIND_R4)
9834                                 ins->type = cfg->r4_stack_type;
9835                         ins->flags |= ins_flag;
9836                         MONO_ADD_INS (bblock, ins);
9837                         *sp++ = ins;
9838                         if (ins_flag & MONO_INST_VOLATILE) {
9839                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9840                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9841                         }
9842                         ins_flag = 0;
9843                         ++ip;
9844                         break;
9845                 case CEE_STIND_REF:
9846                 case CEE_STIND_I1:
9847                 case CEE_STIND_I2:
9848                 case CEE_STIND_I4:
9849                 case CEE_STIND_I8:
9850                 case CEE_STIND_R4:
9851                 case CEE_STIND_R8:
9852                 case CEE_STIND_I:
9853                         CHECK_STACK (2);
9854                         sp -= 2;
9855
9856                         if (ins_flag & MONO_INST_VOLATILE) {
9857                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9858                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9859                         }
9860
9861                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9862                         ins->flags |= ins_flag;
9863                         ins_flag = 0;
9864
9865                         MONO_ADD_INS (bblock, ins);
9866
9867                         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)))
9868                                 emit_write_barrier (cfg, sp [0], sp [1]);
9869
9870                         inline_costs += 1;
9871                         ++ip;
9872                         break;
9873
9874                 case CEE_MUL:
9875                         CHECK_STACK (2);
9876
9877                         MONO_INST_NEW (cfg, ins, (*ip));
9878                         sp -= 2;
9879                         ins->sreg1 = sp [0]->dreg;
9880                         ins->sreg2 = sp [1]->dreg;
9881                         type_from_op (cfg, ins, sp [0], sp [1]);
9882                         CHECK_TYPE (ins);
9883                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
9884
9885                         /* Use the immediate opcodes if possible */
9886                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9887                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9888                                 if (imm_opcode != -1) {
9889                                         ins->opcode = imm_opcode;
9890                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9891                                         ins->sreg2 = -1;
9892
9893                                         NULLIFY_INS (sp [1]);
9894                                 }
9895                         }
9896
9897                         MONO_ADD_INS ((cfg)->cbb, (ins));
9898
9899                         *sp++ = mono_decompose_opcode (cfg, ins);
9900                         ip++;
9901                         break;
9902                 case CEE_ADD:
9903                 case CEE_SUB:
9904                 case CEE_DIV:
9905                 case CEE_DIV_UN:
9906                 case CEE_REM:
9907                 case CEE_REM_UN:
9908                 case CEE_AND:
9909                 case CEE_OR:
9910                 case CEE_XOR:
9911                 case CEE_SHL:
9912                 case CEE_SHR:
9913                 case CEE_SHR_UN:
9914                         CHECK_STACK (2);
9915
9916                         MONO_INST_NEW (cfg, ins, (*ip));
9917                         sp -= 2;
9918                         ins->sreg1 = sp [0]->dreg;
9919                         ins->sreg2 = sp [1]->dreg;
9920                         type_from_op (cfg, ins, sp [0], sp [1]);
9921                         CHECK_TYPE (ins);
9922                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9923                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
9924
9925                         /* FIXME: Pass opcode to is_inst_imm */
9926
9927                         /* Use the immediate opcodes if possible */
9928                         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)) {
9929                                 int imm_opcode;
9930
9931                                 imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9932 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
9933                                 /* Keep emulated opcodes which are optimized away later */
9934                                 if ((ins->opcode == OP_IREM_UN || ins->opcode == OP_IDIV_UN_IMM) && (cfg->opt & (MONO_OPT_CONSPROP | MONO_OPT_COPYPROP)) && sp [1]->opcode == OP_ICONST && mono_is_power_of_two (sp [1]->inst_c0) >= 0) {
9935                                         imm_opcode = mono_op_to_op_imm (ins->opcode);
9936                                 }
9937 #endif
9938                                 if (imm_opcode != -1) {
9939                                         ins->opcode = imm_opcode;
9940                                         if (sp [1]->opcode == OP_I8CONST) {
9941 #if SIZEOF_REGISTER == 8
9942                                                 ins->inst_imm = sp [1]->inst_l;
9943 #else
9944                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9945                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9946 #endif
9947                                         }
9948                                         else
9949                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9950                                         ins->sreg2 = -1;
9951
9952                                         /* Might be followed by an instruction added by add_widen_op */
9953                                         if (sp [1]->next == NULL)
9954                                                 NULLIFY_INS (sp [1]);
9955                                 }
9956                         }
9957                         MONO_ADD_INS ((cfg)->cbb, (ins));
9958
9959                         *sp++ = mono_decompose_opcode (cfg, ins);
9960                         ip++;
9961                         break;
9962                 case CEE_NEG:
9963                 case CEE_NOT:
9964                 case CEE_CONV_I1:
9965                 case CEE_CONV_I2:
9966                 case CEE_CONV_I4:
9967                 case CEE_CONV_R4:
9968                 case CEE_CONV_R8:
9969                 case CEE_CONV_U4:
9970                 case CEE_CONV_I8:
9971                 case CEE_CONV_U8:
9972                 case CEE_CONV_OVF_I8:
9973                 case CEE_CONV_OVF_U8:
9974                 case CEE_CONV_R_UN:
9975                         CHECK_STACK (1);
9976
9977                         /* Special case this earlier so we have long constants in the IR */
9978                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9979                                 int data = sp [-1]->inst_c0;
9980                                 sp [-1]->opcode = OP_I8CONST;
9981                                 sp [-1]->type = STACK_I8;
9982 #if SIZEOF_REGISTER == 8
9983                                 if ((*ip) == CEE_CONV_U8)
9984                                         sp [-1]->inst_c0 = (guint32)data;
9985                                 else
9986                                         sp [-1]->inst_c0 = data;
9987 #else
9988                                 sp [-1]->inst_ls_word = data;
9989                                 if ((*ip) == CEE_CONV_U8)
9990                                         sp [-1]->inst_ms_word = 0;
9991                                 else
9992                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9993 #endif
9994                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9995                         }
9996                         else {
9997                                 ADD_UNOP (*ip);
9998                         }
9999                         ip++;
10000                         break;
10001                 case CEE_CONV_OVF_I4:
10002                 case CEE_CONV_OVF_I1:
10003                 case CEE_CONV_OVF_I2:
10004                 case CEE_CONV_OVF_I:
10005                 case CEE_CONV_OVF_U:
10006                         CHECK_STACK (1);
10007
10008                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10009                                 ADD_UNOP (CEE_CONV_OVF_I8);
10010                                 ADD_UNOP (*ip);
10011                         } else {
10012                                 ADD_UNOP (*ip);
10013                         }
10014                         ip++;
10015                         break;
10016                 case CEE_CONV_OVF_U1:
10017                 case CEE_CONV_OVF_U2:
10018                 case CEE_CONV_OVF_U4:
10019                         CHECK_STACK (1);
10020
10021                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10022                                 ADD_UNOP (CEE_CONV_OVF_U8);
10023                                 ADD_UNOP (*ip);
10024                         } else {
10025                                 ADD_UNOP (*ip);
10026                         }
10027                         ip++;
10028                         break;
10029                 case CEE_CONV_OVF_I1_UN:
10030                 case CEE_CONV_OVF_I2_UN:
10031                 case CEE_CONV_OVF_I4_UN:
10032                 case CEE_CONV_OVF_I8_UN:
10033                 case CEE_CONV_OVF_U1_UN:
10034                 case CEE_CONV_OVF_U2_UN:
10035                 case CEE_CONV_OVF_U4_UN:
10036                 case CEE_CONV_OVF_U8_UN:
10037                 case CEE_CONV_OVF_I_UN:
10038                 case CEE_CONV_OVF_U_UN:
10039                 case CEE_CONV_U2:
10040                 case CEE_CONV_U1:
10041                 case CEE_CONV_I:
10042                 case CEE_CONV_U:
10043                         CHECK_STACK (1);
10044                         ADD_UNOP (*ip);
10045                         CHECK_CFG_EXCEPTION;
10046                         ip++;
10047                         break;
10048                 case CEE_ADD_OVF:
10049                 case CEE_ADD_OVF_UN:
10050                 case CEE_MUL_OVF:
10051                 case CEE_MUL_OVF_UN:
10052                 case CEE_SUB_OVF:
10053                 case CEE_SUB_OVF_UN:
10054                         CHECK_STACK (2);
10055                         ADD_BINOP (*ip);
10056                         ip++;
10057                         break;
10058                 case CEE_CPOBJ:
10059                         GSHAREDVT_FAILURE (*ip);
10060                         CHECK_OPSIZE (5);
10061                         CHECK_STACK (2);
10062                         token = read32 (ip + 1);
10063                         klass = mini_get_class (method, token, generic_context);
10064                         CHECK_TYPELOAD (klass);
10065                         sp -= 2;
10066                         if (generic_class_is_reference_type (cfg, klass)) {
10067                                 MonoInst *store, *load;
10068                                 int dreg = alloc_ireg_ref (cfg);
10069
10070                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10071                                 load->flags |= ins_flag;
10072                                 MONO_ADD_INS (cfg->cbb, load);
10073
10074                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10075                                 store->flags |= ins_flag;
10076                                 MONO_ADD_INS (cfg->cbb, store);
10077
10078                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10079                                         emit_write_barrier (cfg, sp [0], sp [1]);
10080                         } else {
10081                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10082                         }
10083                         ins_flag = 0;
10084                         ip += 5;
10085                         break;
10086                 case CEE_LDOBJ: {
10087                         int loc_index = -1;
10088                         int stloc_len = 0;
10089
10090                         CHECK_OPSIZE (5);
10091                         CHECK_STACK (1);
10092                         --sp;
10093                         token = read32 (ip + 1);
10094                         klass = mini_get_class (method, token, generic_context);
10095                         CHECK_TYPELOAD (klass);
10096
10097                         /* Optimize the common ldobj+stloc combination */
10098                         switch (ip [5]) {
10099                         case CEE_STLOC_S:
10100                                 loc_index = ip [6];
10101                                 stloc_len = 2;
10102                                 break;
10103                         case CEE_STLOC_0:
10104                         case CEE_STLOC_1:
10105                         case CEE_STLOC_2:
10106                         case CEE_STLOC_3:
10107                                 loc_index = ip [5] - CEE_STLOC_0;
10108                                 stloc_len = 1;
10109                                 break;
10110                         default:
10111                                 break;
10112                         }
10113
10114                         if ((loc_index != -1) && ip_in_bb (cfg, bblock, ip + 5)) {
10115                                 CHECK_LOCAL (loc_index);
10116
10117                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10118                                 ins->dreg = cfg->locals [loc_index]->dreg;
10119                                 ins->flags |= ins_flag;
10120                                 ip += 5;
10121                                 ip += stloc_len;
10122                                 if (ins_flag & MONO_INST_VOLATILE) {
10123                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10124                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10125                                 }
10126                                 ins_flag = 0;
10127                                 break;
10128                         }
10129
10130                         /* Optimize the ldobj+stobj combination */
10131                         /* The reference case ends up being a load+store anyway */
10132                         /* Skip this if the operation is volatile. */
10133                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, bblock, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass) && !(ins_flag & MONO_INST_VOLATILE)) {
10134                                 CHECK_STACK (1);
10135
10136                                 sp --;
10137
10138                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10139
10140                                 ip += 5 + 5;
10141                                 ins_flag = 0;
10142                                 break;
10143                         }
10144
10145                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10146                         ins->flags |= ins_flag;
10147                         *sp++ = ins;
10148
10149                         if (ins_flag & MONO_INST_VOLATILE) {
10150                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10151                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10152                         }
10153
10154                         ip += 5;
10155                         ins_flag = 0;
10156                         inline_costs += 1;
10157                         break;
10158                 }
10159                 case CEE_LDSTR:
10160                         CHECK_STACK_OVF (1);
10161                         CHECK_OPSIZE (5);
10162                         n = read32 (ip + 1);
10163
10164                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10165                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10166                                 ins->type = STACK_OBJ;
10167                                 *sp = ins;
10168                         }
10169                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10170                                 MonoInst *iargs [1];
10171                                 char *str = mono_method_get_wrapper_data (method, n);
10172
10173                                 if (cfg->compile_aot)
10174                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10175                                 else
10176                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10177                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10178                         } else {
10179                                 if (cfg->opt & MONO_OPT_SHARED) {
10180                                         MonoInst *iargs [3];
10181
10182                                         if (cfg->compile_aot) {
10183                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10184                                         }
10185                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10186                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10187                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10188                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10189                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10190                                 } else {
10191                                         if (bblock->out_of_line) {
10192                                                 MonoInst *iargs [2];
10193
10194                                                 if (image == mono_defaults.corlib) {
10195                                                         /*
10196                                                          * Avoid relocations in AOT and save some space by using a
10197                                                          * version of helper_ldstr specialized to mscorlib.
10198                                                          */
10199                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10200                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10201                                                 } else {
10202                                                         /* Avoid creating the string object */
10203                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10204                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10205                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10206                                                 }
10207                                         }
10208                                         else
10209                                         if (cfg->compile_aot) {
10210                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10211                                                 *sp = ins;
10212                                                 MONO_ADD_INS (bblock, ins);
10213                                         }
10214                                         else {
10215                                                 NEW_PCONST (cfg, ins, NULL);
10216                                                 ins->type = STACK_OBJ;
10217                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10218                                                 if (!ins->inst_p0)
10219                                                         OUT_OF_MEMORY_FAILURE;
10220
10221                                                 *sp = ins;
10222                                                 MONO_ADD_INS (bblock, ins);
10223                                         }
10224                                 }
10225                         }
10226
10227                         sp++;
10228                         ip += 5;
10229                         break;
10230                 case CEE_NEWOBJ: {
10231                         MonoInst *iargs [2];
10232                         MonoMethodSignature *fsig;
10233                         MonoInst this_ins;
10234                         MonoInst *alloc;
10235                         MonoInst *vtable_arg = NULL;
10236
10237                         CHECK_OPSIZE (5);
10238                         token = read32 (ip + 1);
10239                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10240                         if (!cmethod || mono_loader_get_last_error ())
10241                                 LOAD_ERROR;
10242                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10243                         CHECK_CFG_ERROR;
10244
10245                         mono_save_token_info (cfg, image, token, cmethod);
10246
10247                         if (!mono_class_init (cmethod->klass))
10248                                 TYPE_LOAD_ERROR (cmethod->klass);
10249
10250                         context_used = mini_method_check_context_used (cfg, cmethod);
10251
10252                         if (mono_security_cas_enabled ()) {
10253                                 if (check_linkdemand (cfg, method, cmethod))
10254                                         INLINE_FAILURE ("linkdemand");
10255                                 CHECK_CFG_EXCEPTION;
10256                         } else if (mono_security_core_clr_enabled ()) {
10257                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
10258                         }
10259
10260                         if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
10261                                 emit_generic_class_init (cfg, cmethod->klass);
10262                                 CHECK_TYPELOAD (cmethod->klass);
10263                         }
10264
10265                         /*
10266                         if (cfg->gsharedvt) {
10267                                 if (mini_is_gsharedvt_variable_signature (sig))
10268                                         GSHAREDVT_FAILURE (*ip);
10269                         }
10270                         */
10271
10272                         n = fsig->param_count;
10273                         CHECK_STACK (n);
10274
10275                         /*
10276                          * Generate smaller code for the common newobj <exception> instruction in
10277                          * argument checking code.
10278                          */
10279                         if (bblock->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10280                                 is_exception_class (cmethod->klass) && n <= 2 &&
10281                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10282                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10283                                 MonoInst *iargs [3];
10284
10285                                 sp -= n;
10286
10287                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10288                                 switch (n) {
10289                                 case 0:
10290                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10291                                         break;
10292                                 case 1:
10293                                         iargs [1] = sp [0];
10294                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10295                                         break;
10296                                 case 2:
10297                                         iargs [1] = sp [0];
10298                                         iargs [2] = sp [1];
10299                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10300                                         break;
10301                                 default:
10302                                         g_assert_not_reached ();
10303                                 }
10304
10305                                 ip += 5;
10306                                 inline_costs += 5;
10307                                 break;
10308                         }
10309
10310                         /* move the args to allow room for 'this' in the first position */
10311                         while (n--) {
10312                                 --sp;
10313                                 sp [1] = sp [0];
10314                         }
10315
10316                         /* check_call_signature () requires sp[0] to be set */
10317                         this_ins.type = STACK_OBJ;
10318                         sp [0] = &this_ins;
10319                         if (check_call_signature (cfg, fsig, sp))
10320                                 UNVERIFIED;
10321
10322                         iargs [0] = NULL;
10323
10324                         if (mini_class_is_system_array (cmethod->klass)) {
10325                                 *sp = emit_get_rgctx_method (cfg, context_used,
10326                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10327
10328                                 /* Avoid varargs in the common case */
10329                                 if (fsig->param_count == 1)
10330                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10331                                 else if (fsig->param_count == 2)
10332                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10333                                 else if (fsig->param_count == 3)
10334                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10335                                 else if (fsig->param_count == 4)
10336                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10337                                 else
10338                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10339                         } else if (cmethod->string_ctor) {
10340                                 g_assert (!context_used);
10341                                 g_assert (!vtable_arg);
10342                                 /* we simply pass a null pointer */
10343                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10344                                 /* now call the string ctor */
10345                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10346                         } else {
10347                                 if (cmethod->klass->valuetype) {
10348                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10349                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10350                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10351
10352                                         alloc = NULL;
10353
10354                                         /*
10355                                          * The code generated by mini_emit_virtual_call () expects
10356                                          * iargs [0] to be a boxed instance, but luckily the vcall
10357                                          * will be transformed into a normal call there.
10358                                          */
10359                                 } else if (context_used) {
10360                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10361                                         *sp = alloc;
10362                                 } else {
10363                                         MonoVTable *vtable = NULL;
10364
10365                                         if (!cfg->compile_aot)
10366                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10367                                         CHECK_TYPELOAD (cmethod->klass);
10368
10369                                         /*
10370                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10371                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10372                                          * As a workaround, we call class cctors before allocating objects.
10373                                          */
10374                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10375                                                 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, cmethod->klass, helper_sig_class_init_trampoline, NULL);
10376                                                 if (cfg->verbose_level > 2)
10377                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10378                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10379                                         }
10380
10381                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10382                                         *sp = alloc;
10383                                 }
10384                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10385
10386                                 if (alloc)
10387                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10388
10389                                 /* Now call the actual ctor */
10390                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &bblock, &inline_costs);
10391                                 CHECK_CFG_EXCEPTION;
10392                         }
10393
10394                         if (alloc == NULL) {
10395                                 /* Valuetype */
10396                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10397                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10398                                 *sp++= ins;
10399                         } else {
10400                                 *sp++ = alloc;
10401                         }
10402
10403                         ip += 5;
10404                         inline_costs += 5;
10405                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10406                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10407                         break;
10408                 }
10409                 case CEE_CASTCLASS:
10410                         CHECK_STACK (1);
10411                         --sp;
10412                         CHECK_OPSIZE (5);
10413                         token = read32 (ip + 1);
10414                         klass = mini_get_class (method, token, generic_context);
10415                         CHECK_TYPELOAD (klass);
10416                         if (sp [0]->type != STACK_OBJ)
10417                                 UNVERIFIED;
10418
10419                         ins = handle_castclass (cfg, klass, *sp, ip, &bblock, &inline_costs);
10420                         CHECK_CFG_EXCEPTION;
10421
10422                         *sp ++ = ins;
10423                         ip += 5;
10424                         break;
10425                 case CEE_ISINST: {
10426                         CHECK_STACK (1);
10427                         --sp;
10428                         CHECK_OPSIZE (5);
10429                         token = read32 (ip + 1);
10430                         klass = mini_get_class (method, token, generic_context);
10431                         CHECK_TYPELOAD (klass);
10432                         if (sp [0]->type != STACK_OBJ)
10433                                 UNVERIFIED;
10434
10435                         context_used = mini_class_check_context_used (cfg, klass);
10436
10437                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10438                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10439                                 MonoInst *args [3];
10440
10441                                 /* obj */
10442                                 args [0] = *sp;
10443
10444                                 /* klass */
10445                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10446
10447                                 /* inline cache*/
10448                                 if (cfg->compile_aot)
10449                                         EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, NULL);
10450                                 else
10451                                         EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
10452
10453                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
10454                                 ip += 5;
10455                                 inline_costs += 2;
10456                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
10457                                 MonoMethod *mono_isinst;
10458                                 MonoInst *iargs [1];
10459                                 int costs;
10460
10461                                 mono_isinst = mono_marshal_get_isinst (klass);
10462                                 iargs [0] = sp [0];
10463
10464                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
10465                                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
10466                                 CHECK_CFG_EXCEPTION;
10467                                 g_assert (costs > 0);
10468
10469                                 ip += 5;
10470                                 cfg->real_offset += 5;
10471
10472                                 *sp++= iargs [0];
10473
10474                                 inline_costs += costs;
10475                         }
10476                         else {
10477                                 ins = handle_isinst (cfg, klass, *sp, context_used);
10478                                 CHECK_CFG_EXCEPTION;
10479                                 bblock = cfg->cbb;
10480                                 *sp ++ = ins;
10481                                 ip += 5;
10482                         }
10483                         break;
10484                 }
10485                 case CEE_UNBOX_ANY: {
10486                         MonoInst *res, *addr;
10487
10488                         CHECK_STACK (1);
10489                         --sp;
10490                         CHECK_OPSIZE (5);
10491                         token = read32 (ip + 1);
10492                         klass = mini_get_class (method, token, generic_context);
10493                         CHECK_TYPELOAD (klass);
10494
10495                         mono_save_token_info (cfg, image, token, klass);
10496
10497                         context_used = mini_class_check_context_used (cfg, klass);
10498
10499                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10500                                 res = handle_unbox_gsharedvt (cfg, klass, *sp, &bblock);
10501                                 inline_costs += 2;
10502                         } else if (generic_class_is_reference_type (cfg, klass)) {
10503                                 res = handle_castclass (cfg, klass, *sp, ip, &bblock, &inline_costs);
10504                                 CHECK_CFG_EXCEPTION;
10505                         } else if (mono_class_is_nullable (klass)) {
10506                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10507                         } else {
10508                                 addr = handle_unbox (cfg, klass, sp, context_used);
10509                                 /* LDOBJ */
10510                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10511                                 res = ins;
10512                                 inline_costs += 2;
10513                         }
10514
10515                         *sp ++ = res;
10516                         ip += 5;
10517                         break;
10518                 }
10519                 case CEE_BOX: {
10520                         MonoInst *val;
10521                         MonoClass *enum_class;
10522                         MonoMethod *has_flag;
10523
10524                         CHECK_STACK (1);
10525                         --sp;
10526                         val = *sp;
10527                         CHECK_OPSIZE (5);
10528                         token = read32 (ip + 1);
10529                         klass = mini_get_class (method, token, generic_context);
10530                         CHECK_TYPELOAD (klass);
10531
10532                         mono_save_token_info (cfg, image, token, klass);
10533
10534                         context_used = mini_class_check_context_used (cfg, klass);
10535
10536                         if (generic_class_is_reference_type (cfg, klass)) {
10537                                 *sp++ = val;
10538                                 ip += 5;
10539                                 break;
10540                         }
10541
10542                         if (klass == mono_defaults.void_class)
10543                                 UNVERIFIED;
10544                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10545                                 UNVERIFIED;
10546                         /* frequent check in generic code: box (struct), brtrue */
10547
10548                         /*
10549                          * Look for:
10550                          *
10551                          *   <push int/long ptr>
10552                          *   <push int/long>
10553                          *   box MyFlags
10554                          *   constrained. MyFlags
10555                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10556                          *
10557                          * If we find this sequence and the operand types on box and constrained
10558                          * are equal, we can emit a specialized instruction sequence instead of
10559                          * the very slow HasFlag () call.
10560                          */
10561                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10562                             /* Cheap checks first. */
10563                             ip + 5 + 6 + 5 < end &&
10564                             ip [5] == CEE_PREFIX1 &&
10565                             ip [6] == CEE_CONSTRAINED_ &&
10566                             ip [11] == CEE_CALLVIRT &&
10567                             ip_in_bb (cfg, bblock, ip + 5 + 6 + 5) &&
10568                             mono_class_is_enum (klass) &&
10569                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10570                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10571                             has_flag->klass == mono_defaults.enum_class &&
10572                             !strcmp (has_flag->name, "HasFlag") &&
10573                             has_flag->signature->hasthis &&
10574                             has_flag->signature->param_count == 1) {
10575                                 CHECK_TYPELOAD (enum_class);
10576
10577                                 if (enum_class == klass) {
10578                                         MonoInst *enum_this, *enum_flag;
10579
10580                                         ip += 5 + 6 + 5;
10581                                         --sp;
10582
10583                                         enum_this = sp [0];
10584                                         enum_flag = sp [1];
10585
10586                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10587                                         break;
10588                                 }
10589                         }
10590
10591                         // FIXME: LLVM can't handle the inconsistent bb linking
10592                         if (!mono_class_is_nullable (klass) &&
10593                                 ip + 5 < end && ip_in_bb (cfg, bblock, ip + 5) &&
10594                                 (ip [5] == CEE_BRTRUE ||
10595                                  ip [5] == CEE_BRTRUE_S ||
10596                                  ip [5] == CEE_BRFALSE ||
10597                                  ip [5] == CEE_BRFALSE_S)) {
10598                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10599                                 int dreg;
10600                                 MonoBasicBlock *true_bb, *false_bb;
10601
10602                                 ip += 5;
10603
10604                                 if (cfg->verbose_level > 3) {
10605                                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10606                                         printf ("<box+brtrue opt>\n");
10607                                 }
10608
10609                                 switch (*ip) {
10610                                 case CEE_BRTRUE_S:
10611                                 case CEE_BRFALSE_S:
10612                                         CHECK_OPSIZE (2);
10613                                         ip++;
10614                                         target = ip + 1 + (signed char)(*ip);
10615                                         ip++;
10616                                         break;
10617                                 case CEE_BRTRUE:
10618                                 case CEE_BRFALSE:
10619                                         CHECK_OPSIZE (5);
10620                                         ip++;
10621                                         target = ip + 4 + (gint)(read32 (ip));
10622                                         ip += 4;
10623                                         break;
10624                                 default:
10625                                         g_assert_not_reached ();
10626                                 }
10627
10628                                 /*
10629                                  * We need to link both bblocks, since it is needed for handling stack
10630                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10631                                  * Branching to only one of them would lead to inconsistencies, so
10632                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10633                                  */
10634                                 GET_BBLOCK (cfg, true_bb, target);
10635                                 GET_BBLOCK (cfg, false_bb, ip);
10636
10637                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10638                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10639
10640                                 if (sp != stack_start) {
10641                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10642                                         sp = stack_start;
10643                                         CHECK_UNVERIFIABLE (cfg);
10644                                 }
10645
10646                                 if (COMPILE_LLVM (cfg)) {
10647                                         dreg = alloc_ireg (cfg);
10648                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10649                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10650
10651                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10652                                 } else {
10653                                         /* The JIT can't eliminate the iconst+compare */
10654                                         MONO_INST_NEW (cfg, ins, OP_BR);
10655                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10656                                         MONO_ADD_INS (cfg->cbb, ins);
10657                                 }
10658
10659                                 start_new_bblock = 1;
10660                                 break;
10661                         }
10662
10663                         *sp++ = handle_box (cfg, val, klass, context_used, &bblock);
10664
10665                         CHECK_CFG_EXCEPTION;
10666                         ip += 5;
10667                         inline_costs += 1;
10668                         break;
10669                 }
10670                 case CEE_UNBOX: {
10671                         CHECK_STACK (1);
10672                         --sp;
10673                         CHECK_OPSIZE (5);
10674                         token = read32 (ip + 1);
10675                         klass = mini_get_class (method, token, generic_context);
10676                         CHECK_TYPELOAD (klass);
10677
10678                         mono_save_token_info (cfg, image, token, klass);
10679
10680                         context_used = mini_class_check_context_used (cfg, klass);
10681
10682                         if (mono_class_is_nullable (klass)) {
10683                                 MonoInst *val;
10684
10685                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10686                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10687
10688                                 *sp++= ins;
10689                         } else {
10690                                 ins = handle_unbox (cfg, klass, sp, context_used);
10691                                 *sp++ = ins;
10692                         }
10693                         ip += 5;
10694                         inline_costs += 2;
10695                         break;
10696                 }
10697                 case CEE_LDFLD:
10698                 case CEE_LDFLDA:
10699                 case CEE_STFLD:
10700                 case CEE_LDSFLD:
10701                 case CEE_LDSFLDA:
10702                 case CEE_STSFLD: {
10703                         MonoClassField *field;
10704 #ifndef DISABLE_REMOTING
10705                         int costs;
10706 #endif
10707                         guint foffset;
10708                         gboolean is_instance;
10709                         int op;
10710                         gpointer addr = NULL;
10711                         gboolean is_special_static;
10712                         MonoType *ftype;
10713                         MonoInst *store_val = NULL;
10714                         MonoInst *thread_ins;
10715
10716                         op = *ip;
10717                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10718                         if (is_instance) {
10719                                 if (op == CEE_STFLD) {
10720                                         CHECK_STACK (2);
10721                                         sp -= 2;
10722                                         store_val = sp [1];
10723                                 } else {
10724                                         CHECK_STACK (1);
10725                                         --sp;
10726                                 }
10727                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10728                                         UNVERIFIED;
10729                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10730                                         UNVERIFIED;
10731                         } else {
10732                                 if (op == CEE_STSFLD) {
10733                                         CHECK_STACK (1);
10734                                         sp--;
10735                                         store_val = sp [0];
10736                                 }
10737                         }
10738
10739                         CHECK_OPSIZE (5);
10740                         token = read32 (ip + 1);
10741                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10742                                 field = mono_method_get_wrapper_data (method, token);
10743                                 klass = field->parent;
10744                         }
10745                         else {
10746                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10747                                 CHECK_CFG_ERROR;
10748                         }
10749                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10750                                 FIELD_ACCESS_FAILURE (method, field);
10751                         mono_class_init (klass);
10752
10753                         if (is_instance && *ip != CEE_LDFLDA && is_magic_tls_access (field))
10754                                 UNVERIFIED;
10755
10756                         /* if the class is Critical then transparent code cannot access it's fields */
10757                         if (!is_instance && mono_security_core_clr_enabled ())
10758                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
10759
10760                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10761                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10762                         if (mono_security_core_clr_enabled ())
10763                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
10764                         */
10765
10766                         /*
10767                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10768                          * the static case.
10769                          */
10770                         if (is_instance && field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
10771                                 switch (op) {
10772                                 case CEE_LDFLD:
10773                                         op = CEE_LDSFLD;
10774                                         break;
10775                                 case CEE_STFLD:
10776                                         op = CEE_STSFLD;
10777                                         break;
10778                                 case CEE_LDFLDA:
10779                                         op = CEE_LDSFLDA;
10780                                         break;
10781                                 default:
10782                                         g_assert_not_reached ();
10783                                 }
10784                                 is_instance = FALSE;
10785                         }
10786
10787                         context_used = mini_class_check_context_used (cfg, klass);
10788
10789                         /* INSTANCE CASE */
10790
10791                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10792                         if (op == CEE_STFLD) {
10793                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10794                                         UNVERIFIED;
10795 #ifndef DISABLE_REMOTING
10796                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10797                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10798                                         MonoInst *iargs [5];
10799
10800                                         GSHAREDVT_FAILURE (op);
10801
10802                                         iargs [0] = sp [0];
10803                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10804                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10805                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10806                                                     field->offset);
10807                                         iargs [4] = sp [1];
10808
10809                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10810                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10811                                                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
10812                                                 CHECK_CFG_EXCEPTION;
10813                                                 g_assert (costs > 0);
10814
10815                                                 cfg->real_offset += 5;
10816
10817                                                 inline_costs += costs;
10818                                         } else {
10819                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10820                                         }
10821                                 } else
10822 #endif
10823                                 {
10824                                         MonoInst *store;
10825
10826                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10827
10828                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10829                                                 MonoInst *offset_ins;
10830
10831                                                 context_used = mini_class_check_context_used (cfg, klass);
10832
10833                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10834                                                 dreg = alloc_ireg_mp (cfg);
10835                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10836                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
10837                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10838                                         } else {
10839                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10840                                         }
10841                                         if (sp [0]->opcode != OP_LDADDR)
10842                                                 store->flags |= MONO_INST_FAULT;
10843
10844                                 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)) {
10845                                         /* insert call to write barrier */
10846                                         MonoInst *ptr;
10847                                         int dreg;
10848
10849                                         dreg = alloc_ireg_mp (cfg);
10850                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10851                                         emit_write_barrier (cfg, ptr, sp [1]);
10852                                 }
10853
10854                                         store->flags |= ins_flag;
10855                                 }
10856                                 ins_flag = 0;
10857                                 ip += 5;
10858                                 break;
10859                         }
10860
10861 #ifndef DISABLE_REMOTING
10862                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10863                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10864                                 MonoInst *iargs [4];
10865
10866                                 GSHAREDVT_FAILURE (op);
10867
10868                                 iargs [0] = sp [0];
10869                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10870                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10871                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10872                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10873                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10874                                                                                    iargs, ip, cfg->real_offset, TRUE, &bblock);
10875                                         CHECK_CFG_EXCEPTION;
10876                                         g_assert (costs > 0);
10877
10878                                         cfg->real_offset += 5;
10879
10880                                         *sp++ = iargs [0];
10881
10882                                         inline_costs += costs;
10883                                 } else {
10884                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10885                                         *sp++ = ins;
10886                                 }
10887                         } else
10888 #endif
10889                         if (is_instance) {
10890                                 if (sp [0]->type == STACK_VTYPE) {
10891                                         MonoInst *var;
10892
10893                                         /* Have to compute the address of the variable */
10894
10895                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10896                                         if (!var)
10897                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10898                                         else
10899                                                 g_assert (var->klass == klass);
10900
10901                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10902                                         sp [0] = ins;
10903                                 }
10904
10905                                 if (op == CEE_LDFLDA) {
10906                                         if (is_magic_tls_access (field)) {
10907                                                 GSHAREDVT_FAILURE (*ip);
10908                                                 ins = sp [0];
10909                                                 *sp++ = create_magic_tls_access (cfg, field, &cached_tls_addr, ins);
10910                                         } else {
10911                                                 if (sp [0]->type == STACK_OBJ) {
10912                                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10913                                                         MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10914                                                 }
10915
10916                                                 dreg = alloc_ireg_mp (cfg);
10917
10918                                                 if (mini_is_gsharedvt_klass (cfg, klass)) {
10919                                                         MonoInst *offset_ins;
10920
10921                                                         offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10922                                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10923                                                 } else {
10924                                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10925                                                 }
10926                                                 ins->klass = mono_class_from_mono_type (field->type);
10927                                                 ins->type = STACK_MP;
10928                                                 *sp++ = ins;
10929                                         }
10930                                 } else {
10931                                         MonoInst *load;
10932
10933                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10934
10935                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10936                                                 MonoInst *offset_ins;
10937
10938                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10939                                                 dreg = alloc_ireg_mp (cfg);
10940                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10941                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
10942                                         } else {
10943                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
10944                                         }
10945                                         load->flags |= ins_flag;
10946                                         if (sp [0]->opcode != OP_LDADDR)
10947                                                 load->flags |= MONO_INST_FAULT;
10948                                         *sp++ = load;
10949                                 }
10950                         }
10951
10952                         if (is_instance) {
10953                                 ins_flag = 0;
10954                                 ip += 5;
10955                                 break;
10956                         }
10957
10958                         /* STATIC CASE */
10959
10960                         /*
10961                          * We can only support shared generic static
10962                          * field access on architectures where the
10963                          * trampoline code has been extended to handle
10964                          * the generic class init.
10965                          */
10966 #ifndef MONO_ARCH_VTABLE_REG
10967                         GENERIC_SHARING_FAILURE (op);
10968 #endif
10969
10970                         context_used = mini_class_check_context_used (cfg, klass);
10971
10972                         ftype = mono_field_get_type (field);
10973
10974                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL)
10975                                 UNVERIFIED;
10976
10977                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10978                          * to be called here.
10979                          */
10980                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10981                                 mono_class_vtable (cfg->domain, klass);
10982                                 CHECK_TYPELOAD (klass);
10983                         }
10984                         mono_domain_lock (cfg->domain);
10985                         if (cfg->domain->special_static_fields)
10986                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10987                         mono_domain_unlock (cfg->domain);
10988
10989                         is_special_static = mono_class_field_is_special_static (field);
10990
10991                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10992                                 thread_ins = mono_get_thread_intrinsic (cfg);
10993                         else
10994                                 thread_ins = NULL;
10995
10996                         /* Generate IR to compute the field address */
10997                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10998                                 /*
10999                                  * Fast access to TLS data
11000                                  * Inline version of get_thread_static_data () in
11001                                  * threads.c.
11002                                  */
11003                                 guint32 offset;
11004                                 int idx, static_data_reg, array_reg, dreg;
11005
11006                                 GSHAREDVT_FAILURE (op);
11007
11008                                 // offset &= 0x7fffffff;
11009                                 // idx = (offset >> 24) - 1;
11010                                 //      return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
11011                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11012                                 static_data_reg = alloc_ireg (cfg);
11013                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11014
11015                                 if (cfg->compile_aot) {
11016                                         int offset_reg, offset2_reg, idx_reg;
11017
11018                                         /* For TLS variables, this will return the TLS offset */
11019                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11020                                         offset_reg = ins->dreg;
11021                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11022                                         idx_reg = alloc_ireg (cfg);
11023                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_IMM, idx_reg, offset_reg, 24);
11024                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISUB_IMM, idx_reg, idx_reg, 1);
11025                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11026                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11027                                         array_reg = alloc_ireg (cfg);
11028                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11029                                         offset2_reg = alloc_ireg (cfg);
11030                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset_reg, 0xffffff);
11031                                         dreg = alloc_ireg (cfg);
11032                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11033                                 } else {
11034                                         offset = (gsize)addr & 0x7fffffff;
11035                                         idx = (offset >> 24) - 1;
11036
11037                                         array_reg = alloc_ireg (cfg);
11038                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11039                                         dreg = alloc_ireg (cfg);
11040                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, (offset & 0xffffff));
11041                                 }
11042                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11043                                         (cfg->compile_aot && is_special_static) ||
11044                                         (context_used && is_special_static)) {
11045                                 MonoInst *iargs [2];
11046
11047                                 g_assert (field->parent);
11048                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11049                                 if (context_used) {
11050                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11051                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11052                                 } else {
11053                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11054                                 }
11055                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11056                         } else if (context_used) {
11057                                 MonoInst *static_data;
11058
11059                                 /*
11060                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11061                                         method->klass->name_space, method->klass->name, method->name,
11062                                         depth, field->offset);
11063                                 */
11064
11065                                 if (mono_class_needs_cctor_run (klass, method))
11066                                         emit_generic_class_init (cfg, klass);
11067
11068                                 /*
11069                                  * The pointer we're computing here is
11070                                  *
11071                                  *   super_info.static_data + field->offset
11072                                  */
11073                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11074                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11075
11076                                 if (mini_is_gsharedvt_klass (cfg, klass)) {
11077                                         MonoInst *offset_ins;
11078
11079                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11080                                         dreg = alloc_ireg_mp (cfg);
11081                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11082                                 } else if (field->offset == 0) {
11083                                         ins = static_data;
11084                                 } else {
11085                                         int addr_reg = mono_alloc_preg (cfg);
11086                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11087                                 }
11088                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11089                                 MonoInst *iargs [2];
11090
11091                                 g_assert (field->parent);
11092                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11093                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11094                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11095                         } else {
11096                                 MonoVTable *vtable = NULL;
11097
11098                                 if (!cfg->compile_aot)
11099                                         vtable = mono_class_vtable (cfg->domain, klass);
11100                                 CHECK_TYPELOAD (klass);
11101
11102                                 if (!addr) {
11103                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11104                                                 if (!(g_slist_find (class_inits, klass))) {
11105                                                         mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, klass, helper_sig_class_init_trampoline, NULL);
11106                                                         if (cfg->verbose_level > 2)
11107                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11108                                                         class_inits = g_slist_prepend (class_inits, klass);
11109                                                 }
11110                                         } else {
11111                                                 if (cfg->run_cctors) {
11112                                                         MonoException *ex;
11113                                                         /* This makes so that inline cannot trigger */
11114                                                         /* .cctors: too many apps depend on them */
11115                                                         /* running with a specific order... */
11116                                                         g_assert (vtable);
11117                                                         if (! vtable->initialized)
11118                                                                 INLINE_FAILURE ("class init");
11119                                                         ex = mono_runtime_class_init_full (vtable, FALSE);
11120                                                         if (ex) {
11121                                                                 set_exception_object (cfg, ex);
11122                                                                 goto exception_exit;
11123                                                         }
11124                                                 }
11125                                         }
11126                                         if (cfg->compile_aot)
11127                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11128                                         else {
11129                                                 g_assert (vtable);
11130                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11131                                                 g_assert (addr);
11132                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11133                                         }
11134                                 } else {
11135                                         MonoInst *iargs [1];
11136                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11137                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11138                                 }
11139                         }
11140
11141                         /* Generate IR to do the actual load/store operation */
11142
11143                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11144                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11145                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11146                         }
11147
11148                         if (op == CEE_LDSFLDA) {
11149                                 ins->klass = mono_class_from_mono_type (ftype);
11150                                 ins->type = STACK_PTR;
11151                                 *sp++ = ins;
11152                         } else if (op == CEE_STSFLD) {
11153                                 MonoInst *store;
11154
11155                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11156                                 store->flags |= ins_flag;
11157                         } else {
11158                                 gboolean is_const = FALSE;
11159                                 MonoVTable *vtable = NULL;
11160                                 gpointer addr = NULL;
11161
11162                                 if (!context_used) {
11163                                         vtable = mono_class_vtable (cfg->domain, klass);
11164                                         CHECK_TYPELOAD (klass);
11165                                 }
11166                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11167                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11168                                         int ro_type = ftype->type;
11169                                         if (!addr)
11170                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11171                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11172                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11173                                         }
11174
11175                                         GSHAREDVT_FAILURE (op);
11176
11177                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11178                                         is_const = TRUE;
11179                                         switch (ro_type) {
11180                                         case MONO_TYPE_BOOLEAN:
11181                                         case MONO_TYPE_U1:
11182                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11183                                                 sp++;
11184                                                 break;
11185                                         case MONO_TYPE_I1:
11186                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11187                                                 sp++;
11188                                                 break;
11189                                         case MONO_TYPE_CHAR:
11190                                         case MONO_TYPE_U2:
11191                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11192                                                 sp++;
11193                                                 break;
11194                                         case MONO_TYPE_I2:
11195                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11196                                                 sp++;
11197                                                 break;
11198                                                 break;
11199                                         case MONO_TYPE_I4:
11200                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11201                                                 sp++;
11202                                                 break;
11203                                         case MONO_TYPE_U4:
11204                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11205                                                 sp++;
11206                                                 break;
11207                                         case MONO_TYPE_I:
11208                                         case MONO_TYPE_U:
11209                                         case MONO_TYPE_PTR:
11210                                         case MONO_TYPE_FNPTR:
11211                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11212                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11213                                                 sp++;
11214                                                 break;
11215                                         case MONO_TYPE_STRING:
11216                                         case MONO_TYPE_OBJECT:
11217                                         case MONO_TYPE_CLASS:
11218                                         case MONO_TYPE_SZARRAY:
11219                                         case MONO_TYPE_ARRAY:
11220                                                 if (!mono_gc_is_moving ()) {
11221                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11222                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11223                                                         sp++;
11224                                                 } else {
11225                                                         is_const = FALSE;
11226                                                 }
11227                                                 break;
11228                                         case MONO_TYPE_I8:
11229                                         case MONO_TYPE_U8:
11230                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11231                                                 sp++;
11232                                                 break;
11233                                         case MONO_TYPE_R4:
11234                                         case MONO_TYPE_R8:
11235                                         case MONO_TYPE_VALUETYPE:
11236                                         default:
11237                                                 is_const = FALSE;
11238                                                 break;
11239                                         }
11240                                 }
11241
11242                                 if (!is_const) {
11243                                         MonoInst *load;
11244
11245                                         CHECK_STACK_OVF (1);
11246
11247                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11248                                         load->flags |= ins_flag;
11249                                         ins_flag = 0;
11250                                         *sp++ = load;
11251                                 }
11252                         }
11253
11254                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11255                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11256                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11257                         }
11258
11259                         ins_flag = 0;
11260                         ip += 5;
11261                         break;
11262                 }
11263                 case CEE_STOBJ:
11264                         CHECK_STACK (2);
11265                         sp -= 2;
11266                         CHECK_OPSIZE (5);
11267                         token = read32 (ip + 1);
11268                         klass = mini_get_class (method, token, generic_context);
11269                         CHECK_TYPELOAD (klass);
11270                         if (ins_flag & MONO_INST_VOLATILE) {
11271                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11272                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11273                         }
11274                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11275                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11276                         ins->flags |= ins_flag;
11277                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11278                                         generic_class_is_reference_type (cfg, klass)) {
11279                                 /* insert call to write barrier */
11280                                 emit_write_barrier (cfg, sp [0], sp [1]);
11281                         }
11282                         ins_flag = 0;
11283                         ip += 5;
11284                         inline_costs += 1;
11285                         break;
11286
11287                         /*
11288                          * Array opcodes
11289                          */
11290                 case CEE_NEWARR: {
11291                         MonoInst *len_ins;
11292                         const char *data_ptr;
11293                         int data_size = 0;
11294                         guint32 field_token;
11295
11296                         CHECK_STACK (1);
11297                         --sp;
11298
11299                         CHECK_OPSIZE (5);
11300                         token = read32 (ip + 1);
11301
11302                         klass = mini_get_class (method, token, generic_context);
11303                         CHECK_TYPELOAD (klass);
11304
11305                         context_used = mini_class_check_context_used (cfg, klass);
11306
11307                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11308                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11309                                 ins->sreg1 = sp [0]->dreg;
11310                                 ins->type = STACK_I4;
11311                                 ins->dreg = alloc_ireg (cfg);
11312                                 MONO_ADD_INS (cfg->cbb, ins);
11313                                 *sp = mono_decompose_opcode (cfg, ins);
11314                         }
11315
11316                         if (context_used) {
11317                                 MonoInst *args [3];
11318                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11319                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11320
11321                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11322
11323                                 /* vtable */
11324                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11325                                         array_class, MONO_RGCTX_INFO_VTABLE);
11326                                 /* array len */
11327                                 args [1] = sp [0];
11328
11329                                 if (managed_alloc)
11330                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11331                                 else
11332                                         ins = mono_emit_jit_icall (cfg, mono_array_new_specific, args);
11333                         } else {
11334                                 if (cfg->opt & MONO_OPT_SHARED) {
11335                                         /* Decompose now to avoid problems with references to the domainvar */
11336                                         MonoInst *iargs [3];
11337
11338                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11339                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11340                                         iargs [2] = sp [0];
11341
11342                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
11343                                 } else {
11344                                         /* Decompose later since it is needed by abcrem */
11345                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11346                                         mono_class_vtable (cfg->domain, array_type);
11347                                         CHECK_TYPELOAD (array_type);
11348
11349                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11350                                         ins->dreg = alloc_ireg_ref (cfg);
11351                                         ins->sreg1 = sp [0]->dreg;
11352                                         ins->inst_newa_class = klass;
11353                                         ins->type = STACK_OBJ;
11354                                         ins->klass = array_type;
11355                                         MONO_ADD_INS (cfg->cbb, ins);
11356                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11357                                         cfg->cbb->has_array_access = TRUE;
11358
11359                                         /* Needed so mono_emit_load_get_addr () gets called */
11360                                         mono_get_got_var (cfg);
11361                                 }
11362                         }
11363
11364                         len_ins = sp [0];
11365                         ip += 5;
11366                         *sp++ = ins;
11367                         inline_costs += 1;
11368
11369                         /*
11370                          * we inline/optimize the initialization sequence if possible.
11371                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11372                          * for small sizes open code the memcpy
11373                          * ensure the rva field is big enough
11374                          */
11375                         if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, bblock, 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))) {
11376                                 MonoMethod *memcpy_method = get_memcpy_method ();
11377                                 MonoInst *iargs [3];
11378                                 int add_reg = alloc_ireg_mp (cfg);
11379
11380                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11381                                 if (cfg->compile_aot) {
11382                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11383                                 } else {
11384                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11385                                 }
11386                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11387                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11388                                 ip += 11;
11389                         }
11390
11391                         break;
11392                 }
11393                 case CEE_LDLEN:
11394                         CHECK_STACK (1);
11395                         --sp;
11396                         if (sp [0]->type != STACK_OBJ)
11397                                 UNVERIFIED;
11398
11399                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11400                         ins->dreg = alloc_preg (cfg);
11401                         ins->sreg1 = sp [0]->dreg;
11402                         ins->type = STACK_I4;
11403                         /* This flag will be inherited by the decomposition */
11404                         ins->flags |= MONO_INST_FAULT;
11405                         MONO_ADD_INS (cfg->cbb, ins);
11406                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11407                         cfg->cbb->has_array_access = TRUE;
11408                         ip ++;
11409                         *sp++ = ins;
11410                         break;
11411                 case CEE_LDELEMA:
11412                         CHECK_STACK (2);
11413                         sp -= 2;
11414                         CHECK_OPSIZE (5);
11415                         if (sp [0]->type != STACK_OBJ)
11416                                 UNVERIFIED;
11417
11418                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11419
11420                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11421                         CHECK_TYPELOAD (klass);
11422                         /* we need to make sure that this array is exactly the type it needs
11423                          * to be for correctness. the wrappers are lax with their usage
11424                          * so we need to ignore them here
11425                          */
11426                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11427                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11428                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11429                                 CHECK_TYPELOAD (array_class);
11430                         }
11431
11432                         readonly = FALSE;
11433                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11434                         *sp++ = ins;
11435                         ip += 5;
11436                         break;
11437                 case CEE_LDELEM:
11438                 case CEE_LDELEM_I1:
11439                 case CEE_LDELEM_U1:
11440                 case CEE_LDELEM_I2:
11441                 case CEE_LDELEM_U2:
11442                 case CEE_LDELEM_I4:
11443                 case CEE_LDELEM_U4:
11444                 case CEE_LDELEM_I8:
11445                 case CEE_LDELEM_I:
11446                 case CEE_LDELEM_R4:
11447                 case CEE_LDELEM_R8:
11448                 case CEE_LDELEM_REF: {
11449                         MonoInst *addr;
11450
11451                         CHECK_STACK (2);
11452                         sp -= 2;
11453
11454                         if (*ip == CEE_LDELEM) {
11455                                 CHECK_OPSIZE (5);
11456                                 token = read32 (ip + 1);
11457                                 klass = mini_get_class (method, token, generic_context);
11458                                 CHECK_TYPELOAD (klass);
11459                                 mono_class_init (klass);
11460                         }
11461                         else
11462                                 klass = array_access_to_klass (*ip);
11463
11464                         if (sp [0]->type != STACK_OBJ)
11465                                 UNVERIFIED;
11466
11467                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11468
11469                         if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
11470                                 // FIXME-VT: OP_ICONST optimization
11471                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11472                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11473                                 ins->opcode = OP_LOADV_MEMBASE;
11474                         } else if (sp [1]->opcode == OP_ICONST) {
11475                                 int array_reg = sp [0]->dreg;
11476                                 int index_reg = sp [1]->dreg;
11477                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11478
11479                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11480                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11481                         } else {
11482                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11483                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11484                         }
11485                         *sp++ = ins;
11486                         if (*ip == CEE_LDELEM)
11487                                 ip += 5;
11488                         else
11489                                 ++ip;
11490                         break;
11491                 }
11492                 case CEE_STELEM_I:
11493                 case CEE_STELEM_I1:
11494                 case CEE_STELEM_I2:
11495                 case CEE_STELEM_I4:
11496                 case CEE_STELEM_I8:
11497                 case CEE_STELEM_R4:
11498                 case CEE_STELEM_R8:
11499                 case CEE_STELEM_REF:
11500                 case CEE_STELEM: {
11501                         CHECK_STACK (3);
11502                         sp -= 3;
11503
11504                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11505
11506                         if (*ip == CEE_STELEM) {
11507                                 CHECK_OPSIZE (5);
11508                                 token = read32 (ip + 1);
11509                                 klass = mini_get_class (method, token, generic_context);
11510                                 CHECK_TYPELOAD (klass);
11511                                 mono_class_init (klass);
11512                         }
11513                         else
11514                                 klass = array_access_to_klass (*ip);
11515
11516                         if (sp [0]->type != STACK_OBJ)
11517                                 UNVERIFIED;
11518
11519                         emit_array_store (cfg, klass, sp, TRUE);
11520
11521                         if (*ip == CEE_STELEM)
11522                                 ip += 5;
11523                         else
11524                                 ++ip;
11525                         inline_costs += 1;
11526                         break;
11527                 }
11528                 case CEE_CKFINITE: {
11529                         CHECK_STACK (1);
11530                         --sp;
11531
11532                         MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11533                         ins->sreg1 = sp [0]->dreg;
11534                         ins->dreg = alloc_freg (cfg);
11535                         ins->type = STACK_R8;
11536                         MONO_ADD_INS (bblock, ins);
11537
11538                         *sp++ = mono_decompose_opcode (cfg, ins);
11539
11540                         ++ip;
11541                         break;
11542                 }
11543                 case CEE_REFANYVAL: {
11544                         MonoInst *src_var, *src;
11545
11546                         int klass_reg = alloc_preg (cfg);
11547                         int dreg = alloc_preg (cfg);
11548
11549                         GSHAREDVT_FAILURE (*ip);
11550
11551                         CHECK_STACK (1);
11552                         MONO_INST_NEW (cfg, ins, *ip);
11553                         --sp;
11554                         CHECK_OPSIZE (5);
11555                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11556                         CHECK_TYPELOAD (klass);
11557
11558                         context_used = mini_class_check_context_used (cfg, klass);
11559
11560                         // FIXME:
11561                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11562                         if (!src_var)
11563                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11564                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11565                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11566
11567                         if (context_used) {
11568                                 MonoInst *klass_ins;
11569
11570                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
11571                                                 klass, MONO_RGCTX_INFO_KLASS);
11572
11573                                 // FIXME:
11574                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11575                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11576                         } else {
11577                                 mini_emit_class_check (cfg, klass_reg, klass);
11578                         }
11579                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11580                         ins->type = STACK_MP;
11581                         *sp++ = ins;
11582                         ip += 5;
11583                         break;
11584                 }
11585                 case CEE_MKREFANY: {
11586                         MonoInst *loc, *addr;
11587
11588                         GSHAREDVT_FAILURE (*ip);
11589
11590                         CHECK_STACK (1);
11591                         MONO_INST_NEW (cfg, ins, *ip);
11592                         --sp;
11593                         CHECK_OPSIZE (5);
11594                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11595                         CHECK_TYPELOAD (klass);
11596
11597                         context_used = mini_class_check_context_used (cfg, klass);
11598
11599                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11600                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11601
11602                         if (context_used) {
11603                                 MonoInst *const_ins;
11604                                 int type_reg = alloc_preg (cfg);
11605
11606                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11607                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11608                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11609                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11610                         } else if (cfg->compile_aot) {
11611                                 int const_reg = alloc_preg (cfg);
11612                                 int type_reg = alloc_preg (cfg);
11613
11614                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11615                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11616                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11617                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11618                         } else {
11619                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
11620                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
11621                         }
11622                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11623
11624                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11625                         ins->type = STACK_VTYPE;
11626                         ins->klass = mono_defaults.typed_reference_class;
11627                         *sp++ = ins;
11628                         ip += 5;
11629                         break;
11630                 }
11631                 case CEE_LDTOKEN: {
11632                         gpointer handle;
11633                         MonoClass *handle_class;
11634
11635                         CHECK_STACK_OVF (1);
11636
11637                         CHECK_OPSIZE (5);
11638                         n = read32 (ip + 1);
11639
11640                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11641                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11642                                 handle = mono_method_get_wrapper_data (method, n);
11643                                 handle_class = mono_method_get_wrapper_data (method, n + 1);
11644                                 if (handle_class == mono_defaults.typehandle_class)
11645                                         handle = &((MonoClass*)handle)->byval_arg;
11646                         }
11647                         else {
11648                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11649                                 CHECK_CFG_ERROR;
11650                         }
11651                         if (!handle)
11652                                 LOAD_ERROR;
11653                         mono_class_init (handle_class);
11654                         if (cfg->generic_sharing_context) {
11655                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11656                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11657                                         /* This case handles ldtoken
11658                                            of an open type, like for
11659                                            typeof(Gen<>). */
11660                                         context_used = 0;
11661                                 } else if (handle_class == mono_defaults.typehandle_class) {
11662                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type (handle));
11663                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11664                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11665                                 else if (handle_class == mono_defaults.methodhandle_class)
11666                                         context_used = mini_method_check_context_used (cfg, handle);
11667                                 else
11668                                         g_assert_not_reached ();
11669                         }
11670
11671                         if ((cfg->opt & MONO_OPT_SHARED) &&
11672                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11673                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11674                                 MonoInst *addr, *vtvar, *iargs [3];
11675                                 int method_context_used;
11676
11677                                 method_context_used = mini_method_check_context_used (cfg, method);
11678
11679                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11680
11681                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11682                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11683                                 if (method_context_used) {
11684                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11685                                                 method, MONO_RGCTX_INFO_METHOD);
11686                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11687                                 } else {
11688                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11689                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11690                                 }
11691                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11692
11693                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11694
11695                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11696                         } else {
11697                                 if ((ip + 5 < end) && ip_in_bb (cfg, bblock, ip + 5) &&
11698                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11699                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11700                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11701                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11702                                         MonoClass *tclass = mono_class_from_mono_type (handle);
11703
11704                                         mono_class_init (tclass);
11705                                         if (context_used) {
11706                                                 ins = emit_get_rgctx_klass (cfg, context_used,
11707                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11708                                         } else if (cfg->compile_aot) {
11709                                                 if (method->wrapper_type) {
11710                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
11711                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11712                                                                 /* Special case for static synchronized wrappers */
11713                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11714                                                         } else {
11715                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11716                                                                 /* FIXME: n is not a normal token */
11717                                                                 DISABLE_AOT (cfg);
11718                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11719                                                         }
11720                                                 } else {
11721                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11722                                                 }
11723                                         } else {
11724                                                 EMIT_NEW_PCONST (cfg, ins, mono_type_get_object (cfg->domain, handle));
11725                                         }
11726                                         ins->type = STACK_OBJ;
11727                                         ins->klass = cmethod->klass;
11728                                         ip += 5;
11729                                 } else {
11730                                         MonoInst *addr, *vtvar;
11731
11732                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11733
11734                                         if (context_used) {
11735                                                 if (handle_class == mono_defaults.typehandle_class) {
11736                                                         ins = emit_get_rgctx_klass (cfg, context_used,
11737                                                                         mono_class_from_mono_type (handle),
11738                                                                         MONO_RGCTX_INFO_TYPE);
11739                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11740                                                         ins = emit_get_rgctx_method (cfg, context_used,
11741                                                                         handle, MONO_RGCTX_INFO_METHOD);
11742                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11743                                                         ins = emit_get_rgctx_field (cfg, context_used,
11744                                                                         handle, MONO_RGCTX_INFO_CLASS_FIELD);
11745                                                 } else {
11746                                                         g_assert_not_reached ();
11747                                                 }
11748                                         } else if (cfg->compile_aot) {
11749                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11750                                         } else {
11751                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11752                                         }
11753                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11754                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11755                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11756                                 }
11757                         }
11758
11759                         *sp++ = ins;
11760                         ip += 5;
11761                         break;
11762                 }
11763                 case CEE_THROW:
11764                         CHECK_STACK (1);
11765                         MONO_INST_NEW (cfg, ins, OP_THROW);
11766                         --sp;
11767                         ins->sreg1 = sp [0]->dreg;
11768                         ip++;
11769                         bblock->out_of_line = TRUE;
11770                         MONO_ADD_INS (bblock, ins);
11771                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11772                         MONO_ADD_INS (bblock, ins);
11773                         sp = stack_start;
11774
11775                         link_bblock (cfg, bblock, end_bblock);
11776                         start_new_bblock = 1;
11777                         break;
11778                 case CEE_ENDFINALLY:
11779                         /* mono_save_seq_point_info () depends on this */
11780                         if (sp != stack_start)
11781                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11782                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11783                         MONO_ADD_INS (bblock, ins);
11784                         ip++;
11785                         start_new_bblock = 1;
11786
11787                         /*
11788                          * Control will leave the method so empty the stack, otherwise
11789                          * the next basic block will start with a nonempty stack.
11790                          */
11791                         while (sp != stack_start) {
11792                                 sp--;
11793                         }
11794                         break;
11795                 case CEE_LEAVE:
11796                 case CEE_LEAVE_S: {
11797                         GList *handlers;
11798
11799                         if (*ip == CEE_LEAVE) {
11800                                 CHECK_OPSIZE (5);
11801                                 target = ip + 5 + (gint32)read32(ip + 1);
11802                         } else {
11803                                 CHECK_OPSIZE (2);
11804                                 target = ip + 2 + (signed char)(ip [1]);
11805                         }
11806
11807                         /* empty the stack */
11808                         while (sp != stack_start) {
11809                                 sp--;
11810                         }
11811
11812                         /*
11813                          * If this leave statement is in a catch block, check for a
11814                          * pending exception, and rethrow it if necessary.
11815                          * We avoid doing this in runtime invoke wrappers, since those are called
11816                          * by native code which excepts the wrapper to catch all exceptions.
11817                          */
11818                         for (i = 0; i < header->num_clauses; ++i) {
11819                                 MonoExceptionClause *clause = &header->clauses [i];
11820
11821                                 /*
11822                                  * Use <= in the final comparison to handle clauses with multiple
11823                                  * leave statements, like in bug #78024.
11824                                  * The ordering of the exception clauses guarantees that we find the
11825                                  * innermost clause.
11826                                  */
11827                                 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) {
11828                                         MonoInst *exc_ins;
11829                                         MonoBasicBlock *dont_throw;
11830
11831                                         /*
11832                                           MonoInst *load;
11833
11834                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11835                                         */
11836
11837                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11838
11839                                         NEW_BBLOCK (cfg, dont_throw);
11840
11841                                         /*
11842                                          * Currently, we always rethrow the abort exception, despite the
11843                                          * fact that this is not correct. See thread6.cs for an example.
11844                                          * But propagating the abort exception is more important than
11845                                          * getting the sematics right.
11846                                          */
11847                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11848                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11849                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11850
11851                                         MONO_START_BB (cfg, dont_throw);
11852                                         bblock = cfg->cbb;
11853                                 }
11854                         }
11855
11856                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11857                                 GList *tmp;
11858                                 MonoExceptionClause *clause;
11859
11860                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11861                                         clause = tmp->data;
11862                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11863                                         g_assert (tblock);
11864                                         link_bblock (cfg, bblock, tblock);
11865                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11866                                         ins->inst_target_bb = tblock;
11867                                         ins->inst_eh_block = clause;
11868                                         MONO_ADD_INS (bblock, ins);
11869                                         bblock->has_call_handler = 1;
11870                                         if (COMPILE_LLVM (cfg)) {
11871                                                 MonoBasicBlock *target_bb;
11872
11873                                                 /*
11874                                                  * Link the finally bblock with the target, since it will
11875                                                  * conceptually branch there.
11876                                                  * FIXME: Have to link the bblock containing the endfinally.
11877                                                  */
11878                                                 GET_BBLOCK (cfg, target_bb, target);
11879                                                 link_bblock (cfg, tblock, target_bb);
11880                                         }
11881                                 }
11882                                 g_list_free (handlers);
11883                         }
11884
11885                         MONO_INST_NEW (cfg, ins, OP_BR);
11886                         MONO_ADD_INS (bblock, ins);
11887                         GET_BBLOCK (cfg, tblock, target);
11888                         link_bblock (cfg, bblock, tblock);
11889                         ins->inst_target_bb = tblock;
11890                         start_new_bblock = 1;
11891
11892                         if (*ip == CEE_LEAVE)
11893                                 ip += 5;
11894                         else
11895                                 ip += 2;
11896
11897                         break;
11898                 }
11899
11900                         /*
11901                          * Mono specific opcodes
11902                          */
11903                 case MONO_CUSTOM_PREFIX: {
11904
11905                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11906
11907                         CHECK_OPSIZE (2);
11908                         switch (ip [1]) {
11909                         case CEE_MONO_ICALL: {
11910                                 gpointer func;
11911                                 MonoJitICallInfo *info;
11912
11913                                 token = read32 (ip + 2);
11914                                 func = mono_method_get_wrapper_data (method, token);
11915                                 info = mono_find_jit_icall_by_addr (func);
11916                                 if (!info)
11917                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11918                                 g_assert (info);
11919
11920                                 CHECK_STACK (info->sig->param_count);
11921                                 sp -= info->sig->param_count;
11922
11923                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
11924                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11925                                         *sp++ = ins;
11926
11927                                 ip += 6;
11928                                 inline_costs += 10 * num_calls++;
11929
11930                                 break;
11931                         }
11932                         case CEE_MONO_LDPTR: {
11933                                 gpointer ptr;
11934
11935                                 CHECK_STACK_OVF (1);
11936                                 CHECK_OPSIZE (6);
11937                                 token = read32 (ip + 2);
11938
11939                                 ptr = mono_method_get_wrapper_data (method, token);
11940                                 /* FIXME: Generalize this */
11941                                 if (cfg->compile_aot && ptr == mono_thread_interruption_request_flag ()) {
11942                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11943                                         *sp++ = ins;
11944                                         ip += 6;
11945                                         break;
11946                                 }
11947                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11948                                 *sp++ = ins;
11949                                 ip += 6;
11950                                 inline_costs += 10 * num_calls++;
11951                                 /* Can't embed random pointers into AOT code */
11952                                 DISABLE_AOT (cfg);
11953                                 break;
11954                         }
11955                         case CEE_MONO_JIT_ICALL_ADDR: {
11956                                 MonoJitICallInfo *callinfo;
11957                                 gpointer ptr;
11958
11959                                 CHECK_STACK_OVF (1);
11960                                 CHECK_OPSIZE (6);
11961                                 token = read32 (ip + 2);
11962
11963                                 ptr = mono_method_get_wrapper_data (method, token);
11964                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11965                                 g_assert (callinfo);
11966                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11967                                 *sp++ = ins;
11968                                 ip += 6;
11969                                 inline_costs += 10 * num_calls++;
11970                                 break;
11971                         }
11972                         case CEE_MONO_ICALL_ADDR: {
11973                                 MonoMethod *cmethod;
11974                                 gpointer ptr;
11975
11976                                 CHECK_STACK_OVF (1);
11977                                 CHECK_OPSIZE (6);
11978                                 token = read32 (ip + 2);
11979
11980                                 cmethod = mono_method_get_wrapper_data (method, token);
11981
11982                                 if (cfg->compile_aot) {
11983                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11984                                 } else {
11985                                         ptr = mono_lookup_internal_call (cmethod);
11986                                         g_assert (ptr);
11987                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11988                                 }
11989                                 *sp++ = ins;
11990                                 ip += 6;
11991                                 break;
11992                         }
11993                         case CEE_MONO_VTADDR: {
11994                                 MonoInst *src_var, *src;
11995
11996                                 CHECK_STACK (1);
11997                                 --sp;
11998
11999                                 // FIXME:
12000                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12001                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12002                                 *sp++ = src;
12003                                 ip += 2;
12004                                 break;
12005                         }
12006                         case CEE_MONO_NEWOBJ: {
12007                                 MonoInst *iargs [2];
12008
12009                                 CHECK_STACK_OVF (1);
12010                                 CHECK_OPSIZE (6);
12011                                 token = read32 (ip + 2);
12012                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12013                                 mono_class_init (klass);
12014                                 NEW_DOMAINCONST (cfg, iargs [0]);
12015                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12016                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12017                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12018                                 *sp++ = mono_emit_jit_icall (cfg, mono_object_new, iargs);
12019                                 ip += 6;
12020                                 inline_costs += 10 * num_calls++;
12021                                 break;
12022                         }
12023                         case CEE_MONO_OBJADDR:
12024                                 CHECK_STACK (1);
12025                                 --sp;
12026                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12027                                 ins->dreg = alloc_ireg_mp (cfg);
12028                                 ins->sreg1 = sp [0]->dreg;
12029                                 ins->type = STACK_MP;
12030                                 MONO_ADD_INS (cfg->cbb, ins);
12031                                 *sp++ = ins;
12032                                 ip += 2;
12033                                 break;
12034                         case CEE_MONO_LDNATIVEOBJ:
12035                                 /*
12036                                  * Similar to LDOBJ, but instead load the unmanaged
12037                                  * representation of the vtype to the stack.
12038                                  */
12039                                 CHECK_STACK (1);
12040                                 CHECK_OPSIZE (6);
12041                                 --sp;
12042                                 token = read32 (ip + 2);
12043                                 klass = mono_method_get_wrapper_data (method, token);
12044                                 g_assert (klass->valuetype);
12045                                 mono_class_init (klass);
12046
12047                                 {
12048                                         MonoInst *src, *dest, *temp;
12049
12050                                         src = sp [0];
12051                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12052                                         temp->backend.is_pinvoke = 1;
12053                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12054                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12055
12056                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12057                                         dest->type = STACK_VTYPE;
12058                                         dest->klass = klass;
12059
12060                                         *sp ++ = dest;
12061                                         ip += 6;
12062                                 }
12063                                 break;
12064                         case CEE_MONO_RETOBJ: {
12065                                 /*
12066                                  * Same as RET, but return the native representation of a vtype
12067                                  * to the caller.
12068                                  */
12069                                 g_assert (cfg->ret);
12070                                 g_assert (mono_method_signature (method)->pinvoke);
12071                                 CHECK_STACK (1);
12072                                 --sp;
12073
12074                                 CHECK_OPSIZE (6);
12075                                 token = read32 (ip + 2);
12076                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12077
12078                                 if (!cfg->vret_addr) {
12079                                         g_assert (cfg->ret_var_is_local);
12080
12081                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12082                                 } else {
12083                                         EMIT_NEW_RETLOADA (cfg, ins);
12084                                 }
12085                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12086
12087                                 if (sp != stack_start)
12088                                         UNVERIFIED;
12089
12090                                 MONO_INST_NEW (cfg, ins, OP_BR);
12091                                 ins->inst_target_bb = end_bblock;
12092                                 MONO_ADD_INS (bblock, ins);
12093                                 link_bblock (cfg, bblock, end_bblock);
12094                                 start_new_bblock = 1;
12095                                 ip += 6;
12096                                 break;
12097                         }
12098                         case CEE_MONO_CISINST:
12099                         case CEE_MONO_CCASTCLASS: {
12100                                 int token;
12101                                 CHECK_STACK (1);
12102                                 --sp;
12103                                 CHECK_OPSIZE (6);
12104                                 token = read32 (ip + 2);
12105                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12106                                 if (ip [1] == CEE_MONO_CISINST)
12107                                         ins = handle_cisinst (cfg, klass, sp [0]);
12108                                 else
12109                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12110                                 bblock = cfg->cbb;
12111                                 *sp++ = ins;
12112                                 ip += 6;
12113                                 break;
12114                         }
12115                         case CEE_MONO_SAVE_LMF:
12116                         case CEE_MONO_RESTORE_LMF:
12117 #ifdef MONO_ARCH_HAVE_LMF_OPS
12118                                 MONO_INST_NEW (cfg, ins, (ip [1] == CEE_MONO_SAVE_LMF) ? OP_SAVE_LMF : OP_RESTORE_LMF);
12119                                 MONO_ADD_INS (bblock, ins);
12120                                 cfg->need_lmf_area = TRUE;
12121 #endif
12122                                 ip += 2;
12123                                 break;
12124                         case CEE_MONO_CLASSCONST:
12125                                 CHECK_STACK_OVF (1);
12126                                 CHECK_OPSIZE (6);
12127                                 token = read32 (ip + 2);
12128                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12129                                 *sp++ = ins;
12130                                 ip += 6;
12131                                 inline_costs += 10 * num_calls++;
12132                                 break;
12133                         case CEE_MONO_NOT_TAKEN:
12134                                 bblock->out_of_line = TRUE;
12135                                 ip += 2;
12136                                 break;
12137                         case CEE_MONO_TLS: {
12138                                 int key;
12139
12140                                 CHECK_STACK_OVF (1);
12141                                 CHECK_OPSIZE (6);
12142                                 key = (gint32)read32 (ip + 2);
12143                                 g_assert (key < TLS_KEY_NUM);
12144
12145                                 ins = mono_create_tls_get (cfg, key);
12146                                 if (!ins) {
12147                                         if (cfg->compile_aot) {
12148                                                 DISABLE_AOT (cfg);
12149                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12150                                                 ins->dreg = alloc_preg (cfg);
12151                                                 ins->type = STACK_PTR;
12152                                         } else {
12153                                                 g_assert_not_reached ();
12154                                         }
12155                                 }
12156                                 ins->type = STACK_PTR;
12157                                 MONO_ADD_INS (bblock, ins);
12158                                 *sp++ = ins;
12159                                 ip += 6;
12160                                 break;
12161                         }
12162                         case CEE_MONO_DYN_CALL: {
12163                                 MonoCallInst *call;
12164
12165                                 /* It would be easier to call a trampoline, but that would put an
12166                                  * extra frame on the stack, confusing exception handling. So
12167                                  * implement it inline using an opcode for now.
12168                                  */
12169
12170                                 if (!cfg->dyn_call_var) {
12171                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12172                                         /* prevent it from being register allocated */
12173                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12174                                 }
12175
12176                                 /* Has to use a call inst since it local regalloc expects it */
12177                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12178                                 ins = (MonoInst*)call;
12179                                 sp -= 2;
12180                                 ins->sreg1 = sp [0]->dreg;
12181                                 ins->sreg2 = sp [1]->dreg;
12182                                 MONO_ADD_INS (bblock, ins);
12183
12184                                 cfg->param_area = MAX (cfg->param_area, MONO_ARCH_DYN_CALL_PARAM_AREA);
12185
12186                                 ip += 2;
12187                                 inline_costs += 10 * num_calls++;
12188
12189                                 break;
12190                         }
12191                         case CEE_MONO_MEMORY_BARRIER: {
12192                                 CHECK_OPSIZE (6);
12193                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12194                                 ip += 6;
12195                                 break;
12196                         }
12197                         case CEE_MONO_JIT_ATTACH: {
12198                                 MonoInst *args [16], *domain_ins;
12199                                 MonoInst *ad_ins, *jit_tls_ins;
12200                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12201
12202                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12203
12204                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12205                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12206
12207                                 ad_ins = mono_get_domain_intrinsic (cfg);
12208                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12209
12210                                 if (MONO_ARCH_HAVE_TLS_GET && ad_ins && jit_tls_ins) {
12211                                         NEW_BBLOCK (cfg, next_bb);
12212                                         NEW_BBLOCK (cfg, call_bb);
12213
12214                                         if (cfg->compile_aot) {
12215                                                 /* AOT code is only used in the root domain */
12216                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12217                                         } else {
12218                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12219                                         }
12220                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12221                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12222                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12223
12224                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12225                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12226                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12227
12228                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12229                                         MONO_START_BB (cfg, call_bb);
12230                                 }
12231
12232                                 if (cfg->compile_aot) {
12233                                         /* AOT code is only used in the root domain */
12234                                         EMIT_NEW_PCONST (cfg, args [0], NULL);
12235                                 } else {
12236                                         EMIT_NEW_PCONST (cfg, args [0], cfg->domain);
12237                                 }
12238                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12239                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12240
12241                                 if (next_bb) {
12242                                         MONO_START_BB (cfg, next_bb);
12243                                         bblock = cfg->cbb;
12244                                 }
12245                                 ip += 2;
12246                                 break;
12247                         }
12248                         case CEE_MONO_JIT_DETACH: {
12249                                 MonoInst *args [16];
12250
12251                                 /* Restore the original domain */
12252                                 dreg = alloc_ireg (cfg);
12253                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12254                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12255                                 ip += 2;
12256                                 break;
12257                         }
12258                         default:
12259                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12260                                 break;
12261                         }
12262                         break;
12263                 }
12264
12265                 case CEE_PREFIX1: {
12266                         CHECK_OPSIZE (2);
12267                         switch (ip [1]) {
12268                         case CEE_ARGLIST: {
12269                                 /* somewhat similar to LDTOKEN */
12270                                 MonoInst *addr, *vtvar;
12271                                 CHECK_STACK_OVF (1);
12272                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12273
12274                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12275                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12276
12277                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12278                                 ins->type = STACK_VTYPE;
12279                                 ins->klass = mono_defaults.argumenthandle_class;
12280                                 *sp++ = ins;
12281                                 ip += 2;
12282                                 break;
12283                         }
12284                         case CEE_CEQ:
12285                         case CEE_CGT:
12286                         case CEE_CGT_UN:
12287                         case CEE_CLT:
12288                         case CEE_CLT_UN: {
12289                                 MonoInst *cmp, *arg1, *arg2;
12290
12291                                 CHECK_STACK (2);
12292                                 sp -= 2;
12293                                 arg1 = sp [0];
12294                                 arg2 = sp [1];
12295
12296                                 /*
12297                                  * The following transforms:
12298                                  *    CEE_CEQ    into OP_CEQ
12299                                  *    CEE_CGT    into OP_CGT
12300                                  *    CEE_CGT_UN into OP_CGT_UN
12301                                  *    CEE_CLT    into OP_CLT
12302                                  *    CEE_CLT_UN into OP_CLT_UN
12303                                  */
12304                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12305
12306                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12307                                 cmp->sreg1 = arg1->dreg;
12308                                 cmp->sreg2 = arg2->dreg;
12309                                 type_from_op (cfg, cmp, arg1, arg2);
12310                                 CHECK_TYPE (cmp);
12311                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12312                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12313                                         cmp->opcode = OP_LCOMPARE;
12314                                 else if (arg1->type == STACK_R4)
12315                                         cmp->opcode = OP_RCOMPARE;
12316                                 else if (arg1->type == STACK_R8)
12317                                         cmp->opcode = OP_FCOMPARE;
12318                                 else
12319                                         cmp->opcode = OP_ICOMPARE;
12320                                 MONO_ADD_INS (bblock, cmp);
12321                                 ins->type = STACK_I4;
12322                                 ins->dreg = alloc_dreg (cfg, ins->type);
12323                                 type_from_op (cfg, ins, arg1, arg2);
12324
12325                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12326                                         /*
12327                                          * The backends expect the fceq opcodes to do the
12328                                          * comparison too.
12329                                          */
12330                                         ins->sreg1 = cmp->sreg1;
12331                                         ins->sreg2 = cmp->sreg2;
12332                                         NULLIFY_INS (cmp);
12333                                 }
12334                                 MONO_ADD_INS (bblock, ins);
12335                                 *sp++ = ins;
12336                                 ip += 2;
12337                                 break;
12338                         }
12339                         case CEE_LDFTN: {
12340                                 MonoInst *argconst;
12341                                 MonoMethod *cil_method;
12342
12343                                 CHECK_STACK_OVF (1);
12344                                 CHECK_OPSIZE (6);
12345                                 n = read32 (ip + 2);
12346                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12347                                 if (!cmethod || mono_loader_get_last_error ())
12348                                         LOAD_ERROR;
12349                                 mono_class_init (cmethod->klass);
12350
12351                                 mono_save_token_info (cfg, image, n, cmethod);
12352
12353                                 context_used = mini_method_check_context_used (cfg, cmethod);
12354
12355                                 cil_method = cmethod;
12356                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12357                                         METHOD_ACCESS_FAILURE (method, cil_method);
12358
12359                                 if (mono_security_cas_enabled ()) {
12360                                         if (check_linkdemand (cfg, method, cmethod))
12361                                                 INLINE_FAILURE ("linkdemand");
12362                                         CHECK_CFG_EXCEPTION;
12363                                 } else if (mono_security_core_clr_enabled ()) {
12364                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
12365                                 }
12366
12367                                 /*
12368                                  * Optimize the common case of ldftn+delegate creation
12369                                  */
12370                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12371                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12372                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12373                                                 MonoInst *target_ins, *handle_ins;
12374                                                 MonoMethod *invoke;
12375                                                 int invoke_context_used;
12376
12377                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12378                                                 if (!invoke || !mono_method_signature (invoke))
12379                                                         LOAD_ERROR;
12380
12381                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12382
12383                                                 target_ins = sp [-1];
12384
12385                                                 if (mono_security_core_clr_enabled ())
12386                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method, bblock, ip);
12387
12388                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12389                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12390                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12391                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12392                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12393                                                         }
12394                                                 }
12395
12396 #if defined(MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE)
12397                                                 /* FIXME: SGEN support */
12398                                                 if (invoke_context_used == 0) {
12399                                                         ip += 6;
12400                                                         if (cfg->verbose_level > 3)
12401                                                                 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
12402                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12403                                                                 sp --;
12404                                                                 *sp = handle_ins;
12405                                                                 CHECK_CFG_EXCEPTION;
12406                                                                 ip += 5;
12407                                                                 sp ++;
12408                                                                 break;
12409                                                         }
12410                                                         ip -= 6;
12411                                                 }
12412 #endif
12413                                         }
12414                                 }
12415
12416                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12417                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12418                                 *sp++ = ins;
12419
12420                                 ip += 6;
12421                                 inline_costs += 10 * num_calls++;
12422                                 break;
12423                         }
12424                         case CEE_LDVIRTFTN: {
12425                                 MonoInst *args [2];
12426
12427                                 CHECK_STACK (1);
12428                                 CHECK_OPSIZE (6);
12429                                 n = read32 (ip + 2);
12430                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12431                                 if (!cmethod || mono_loader_get_last_error ())
12432                                         LOAD_ERROR;
12433                                 mono_class_init (cmethod->klass);
12434
12435                                 context_used = mini_method_check_context_used (cfg, cmethod);
12436
12437                                 if (mono_security_cas_enabled ()) {
12438                                         if (check_linkdemand (cfg, method, cmethod))
12439                                                 INLINE_FAILURE ("linkdemand");
12440                                         CHECK_CFG_EXCEPTION;
12441                                 } else if (mono_security_core_clr_enabled ()) {
12442                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
12443                                 }
12444
12445                                 /*
12446                                  * Optimize the common case of ldvirtftn+delegate creation
12447                                  */
12448                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ) && (ip > header->code && ip [-1] == CEE_DUP)) {
12449                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12450                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12451                                                 MonoInst *target_ins, *handle_ins;
12452                                                 MonoMethod *invoke;
12453                                                 int invoke_context_used;
12454
12455                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12456                                                 if (!invoke || !mono_method_signature (invoke))
12457                                                         LOAD_ERROR;
12458
12459                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12460
12461                                                 target_ins = sp [-1];
12462
12463                                                 if (mono_security_core_clr_enabled ())
12464                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method, bblock, ip);
12465
12466 #if defined(MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE)
12467                                                 /* FIXME: SGEN support */
12468                                                 if (invoke_context_used == 0) {
12469                                                         ip += 6;
12470                                                         if (cfg->verbose_level > 3)
12471                                                                 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
12472                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, TRUE))) {
12473                                                                 sp -= 2;
12474                                                                 *sp = handle_ins;
12475                                                                 CHECK_CFG_EXCEPTION;
12476                                                                 ip += 5;
12477                                                                 sp ++;
12478                                                                 break;
12479                                                         }
12480                                                         ip -= 6;
12481                                                 }
12482 #endif
12483                                         }
12484                                 }
12485
12486                                 --sp;
12487                                 args [0] = *sp;
12488
12489                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12490                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12491
12492                                 if (context_used)
12493                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12494                                 else
12495                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12496
12497                                 ip += 6;
12498                                 inline_costs += 10 * num_calls++;
12499                                 break;
12500                         }
12501                         case CEE_LDARG:
12502                                 CHECK_STACK_OVF (1);
12503                                 CHECK_OPSIZE (4);
12504                                 n = read16 (ip + 2);
12505                                 CHECK_ARG (n);
12506                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12507                                 *sp++ = ins;
12508                                 ip += 4;
12509                                 break;
12510                         case CEE_LDARGA:
12511                                 CHECK_STACK_OVF (1);
12512                                 CHECK_OPSIZE (4);
12513                                 n = read16 (ip + 2);
12514                                 CHECK_ARG (n);
12515                                 NEW_ARGLOADA (cfg, ins, n);
12516                                 MONO_ADD_INS (cfg->cbb, ins);
12517                                 *sp++ = ins;
12518                                 ip += 4;
12519                                 break;
12520                         case CEE_STARG:
12521                                 CHECK_STACK (1);
12522                                 --sp;
12523                                 CHECK_OPSIZE (4);
12524                                 n = read16 (ip + 2);
12525                                 CHECK_ARG (n);
12526                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12527                                         UNVERIFIED;
12528                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12529                                 ip += 4;
12530                                 break;
12531                         case CEE_LDLOC:
12532                                 CHECK_STACK_OVF (1);
12533                                 CHECK_OPSIZE (4);
12534                                 n = read16 (ip + 2);
12535                                 CHECK_LOCAL (n);
12536                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12537                                 *sp++ = ins;
12538                                 ip += 4;
12539                                 break;
12540                         case CEE_LDLOCA: {
12541                                 unsigned char *tmp_ip;
12542                                 CHECK_STACK_OVF (1);
12543                                 CHECK_OPSIZE (4);
12544                                 n = read16 (ip + 2);
12545                                 CHECK_LOCAL (n);
12546
12547                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12548                                         ip = tmp_ip;
12549                                         inline_costs += 1;
12550                                         break;
12551                                 }
12552
12553                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12554                                 *sp++ = ins;
12555                                 ip += 4;
12556                                 break;
12557                         }
12558                         case CEE_STLOC:
12559                                 CHECK_STACK (1);
12560                                 --sp;
12561                                 CHECK_OPSIZE (4);
12562                                 n = read16 (ip + 2);
12563                                 CHECK_LOCAL (n);
12564                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12565                                         UNVERIFIED;
12566                                 emit_stloc_ir (cfg, sp, header, n);
12567                                 ip += 4;
12568                                 inline_costs += 1;
12569                                 break;
12570                         case CEE_LOCALLOC:
12571                                 CHECK_STACK (1);
12572                                 --sp;
12573                                 if (sp != stack_start)
12574                                         UNVERIFIED;
12575                                 if (cfg->method != method)
12576                                         /*
12577                                          * Inlining this into a loop in a parent could lead to
12578                                          * stack overflows which is different behavior than the
12579                                          * non-inlined case, thus disable inlining in this case.
12580                                          */
12581                                         INLINE_FAILURE("localloc");
12582
12583                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12584                                 ins->dreg = alloc_preg (cfg);
12585                                 ins->sreg1 = sp [0]->dreg;
12586                                 ins->type = STACK_PTR;
12587                                 MONO_ADD_INS (cfg->cbb, ins);
12588
12589                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12590                                 if (init_locals)
12591                                         ins->flags |= MONO_INST_INIT;
12592
12593                                 *sp++ = ins;
12594                                 ip += 2;
12595                                 break;
12596                         case CEE_ENDFILTER: {
12597                                 MonoExceptionClause *clause, *nearest;
12598                                 int cc, nearest_num;
12599
12600                                 CHECK_STACK (1);
12601                                 --sp;
12602                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12603                                         UNVERIFIED;
12604                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12605                                 ins->sreg1 = (*sp)->dreg;
12606                                 MONO_ADD_INS (bblock, ins);
12607                                 start_new_bblock = 1;
12608                                 ip += 2;
12609
12610                                 nearest = NULL;
12611                                 nearest_num = 0;
12612                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12613                                         clause = &header->clauses [cc];
12614                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12615                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12616                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset))) {
12617                                                 nearest = clause;
12618                                                 nearest_num = cc;
12619                                         }
12620                                 }
12621                                 g_assert (nearest);
12622                                 if ((ip - header->code) != nearest->handler_offset)
12623                                         UNVERIFIED;
12624
12625                                 break;
12626                         }
12627                         case CEE_UNALIGNED_:
12628                                 ins_flag |= MONO_INST_UNALIGNED;
12629                                 /* FIXME: record alignment? we can assume 1 for now */
12630                                 CHECK_OPSIZE (3);
12631                                 ip += 3;
12632                                 break;
12633                         case CEE_VOLATILE_:
12634                                 ins_flag |= MONO_INST_VOLATILE;
12635                                 ip += 2;
12636                                 break;
12637                         case CEE_TAIL_:
12638                                 ins_flag   |= MONO_INST_TAILCALL;
12639                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12640                                 /* Can't inline tail calls at this time */
12641                                 inline_costs += 100000;
12642                                 ip += 2;
12643                                 break;
12644                         case CEE_INITOBJ:
12645                                 CHECK_STACK (1);
12646                                 --sp;
12647                                 CHECK_OPSIZE (6);
12648                                 token = read32 (ip + 2);
12649                                 klass = mini_get_class (method, token, generic_context);
12650                                 CHECK_TYPELOAD (klass);
12651                                 if (generic_class_is_reference_type (cfg, klass))
12652                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12653                                 else
12654                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12655                                 ip += 6;
12656                                 inline_costs += 1;
12657                                 break;
12658                         case CEE_CONSTRAINED_:
12659                                 CHECK_OPSIZE (6);
12660                                 token = read32 (ip + 2);
12661                                 constrained_call = mini_get_class (method, token, generic_context);
12662                                 CHECK_TYPELOAD (constrained_call);
12663                                 ip += 6;
12664                                 break;
12665                         case CEE_CPBLK:
12666                         case CEE_INITBLK: {
12667                                 MonoInst *iargs [3];
12668                                 CHECK_STACK (3);
12669                                 sp -= 3;
12670
12671                                 /* Skip optimized paths for volatile operations. */
12672                                 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)) {
12673                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
12674                                 } 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)) {
12675                                         /* emit_memset only works when val == 0 */
12676                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
12677                                 } else {
12678                                         MonoInst *call;
12679                                         iargs [0] = sp [0];
12680                                         iargs [1] = sp [1];
12681                                         iargs [2] = sp [2];
12682                                         if (ip [1] == CEE_CPBLK) {
12683                                                 /*
12684                                                  * FIXME: It's unclear whether we should be emitting both the acquire
12685                                                  * and release barriers for cpblk. It is technically both a load and
12686                                                  * store operation, so it seems like that's the sensible thing to do.
12687                                                  *
12688                                                  * FIXME: We emit full barriers on both sides of the operation for
12689                                                  * simplicity. We should have a separate atomic memcpy method instead.
12690                                                  */
12691                                                 MonoMethod *memcpy_method = get_memcpy_method ();
12692
12693                                                 if (ins_flag & MONO_INST_VOLATILE)
12694                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12695
12696                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
12697                                                 call->flags |= ins_flag;
12698
12699                                                 if (ins_flag & MONO_INST_VOLATILE)
12700                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12701                                         } else {
12702                                                 MonoMethod *memset_method = get_memset_method ();
12703                                                 if (ins_flag & MONO_INST_VOLATILE) {
12704                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
12705                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
12706                                                 }
12707                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
12708                                                 call->flags |= ins_flag;
12709                                         }
12710                                 }
12711                                 ip += 2;
12712                                 ins_flag = 0;
12713                                 inline_costs += 1;
12714                                 break;
12715                         }
12716                         case CEE_NO_:
12717                                 CHECK_OPSIZE (3);
12718                                 if (ip [2] & 0x1)
12719                                         ins_flag |= MONO_INST_NOTYPECHECK;
12720                                 if (ip [2] & 0x2)
12721                                         ins_flag |= MONO_INST_NORANGECHECK;
12722                                 /* we ignore the no-nullcheck for now since we
12723                                  * really do it explicitly only when doing callvirt->call
12724                                  */
12725                                 ip += 3;
12726                                 break;
12727                         case CEE_RETHROW: {
12728                                 MonoInst *load;
12729                                 int handler_offset = -1;
12730
12731                                 for (i = 0; i < header->num_clauses; ++i) {
12732                                         MonoExceptionClause *clause = &header->clauses [i];
12733                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12734                                                 handler_offset = clause->handler_offset;
12735                                                 break;
12736                                         }
12737                                 }
12738
12739                                 bblock->flags |= BB_EXCEPTION_UNSAFE;
12740
12741                                 if (handler_offset == -1)
12742                                         UNVERIFIED;
12743
12744                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12745                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12746                                 ins->sreg1 = load->dreg;
12747                                 MONO_ADD_INS (bblock, ins);
12748
12749                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12750                                 MONO_ADD_INS (bblock, ins);
12751
12752                                 sp = stack_start;
12753                                 link_bblock (cfg, bblock, end_bblock);
12754                                 start_new_bblock = 1;
12755                                 ip += 2;
12756                                 break;
12757                         }
12758                         case CEE_SIZEOF: {
12759                                 guint32 val;
12760                                 int ialign;
12761
12762                                 CHECK_STACK_OVF (1);
12763                                 CHECK_OPSIZE (6);
12764                                 token = read32 (ip + 2);
12765                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12766                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12767                                         CHECK_CFG_ERROR;
12768
12769                                         val = mono_type_size (type, &ialign);
12770                                 } else {
12771                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12772                                         CHECK_TYPELOAD (klass);
12773
12774                                         val = mono_type_size (&klass->byval_arg, &ialign);
12775
12776                                         if (mini_is_gsharedvt_klass (cfg, klass))
12777                                                 GSHAREDVT_FAILURE (*ip);
12778                                 }
12779                                 EMIT_NEW_ICONST (cfg, ins, val);
12780                                 *sp++= ins;
12781                                 ip += 6;
12782                                 break;
12783                         }
12784                         case CEE_REFANYTYPE: {
12785                                 MonoInst *src_var, *src;
12786
12787                                 GSHAREDVT_FAILURE (*ip);
12788
12789                                 CHECK_STACK (1);
12790                                 --sp;
12791
12792                                 // FIXME:
12793                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12794                                 if (!src_var)
12795                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12796                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12797                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12798                                 *sp++ = ins;
12799                                 ip += 2;
12800                                 break;
12801                         }
12802                         case CEE_READONLY_:
12803                                 readonly = TRUE;
12804                                 ip += 2;
12805                                 break;
12806
12807                         case CEE_UNUSED56:
12808                         case CEE_UNUSED57:
12809                         case CEE_UNUSED70:
12810                         case CEE_UNUSED:
12811                         case CEE_UNUSED99:
12812                                 UNVERIFIED;
12813
12814                         default:
12815                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12816                                 UNVERIFIED;
12817                         }
12818                         break;
12819                 }
12820                 case CEE_UNUSED58:
12821                 case CEE_UNUSED1:
12822                         UNVERIFIED;
12823
12824                 default:
12825                         g_warning ("opcode 0x%02x not handled", *ip);
12826                         UNVERIFIED;
12827                 }
12828         }
12829         if (start_new_bblock != 1)
12830                 UNVERIFIED;
12831
12832         bblock->cil_length = ip - bblock->cil_code;
12833         if (bblock->next_bb) {
12834                 /* This could already be set because of inlining, #693905 */
12835                 MonoBasicBlock *bb = bblock;
12836
12837                 while (bb->next_bb)
12838                         bb = bb->next_bb;
12839                 bb->next_bb = end_bblock;
12840         } else {
12841                 bblock->next_bb = end_bblock;
12842         }
12843
12844         if (cfg->method == method && cfg->domainvar) {
12845                 MonoInst *store;
12846                 MonoInst *get_domain;
12847
12848                 cfg->cbb = init_localsbb;
12849
12850                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
12851                         MONO_ADD_INS (cfg->cbb, get_domain);
12852                 } else {
12853                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
12854                 }
12855                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12856                 MONO_ADD_INS (cfg->cbb, store);
12857         }
12858
12859 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12860         if (cfg->compile_aot)
12861                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12862                 mono_get_got_var (cfg);
12863 #endif
12864
12865         if (cfg->method == method && cfg->got_var)
12866                 mono_emit_load_got_addr (cfg);
12867
12868         if (init_localsbb) {
12869                 cfg->cbb = init_localsbb;
12870                 cfg->ip = NULL;
12871                 for (i = 0; i < header->num_locals; ++i) {
12872                         emit_init_local (cfg, i, header->locals [i], init_locals);
12873                 }
12874         }
12875
12876         if (cfg->init_ref_vars && cfg->method == method) {
12877                 /* Emit initialization for ref vars */
12878                 // FIXME: Avoid duplication initialization for IL locals.
12879                 for (i = 0; i < cfg->num_varinfo; ++i) {
12880                         MonoInst *ins = cfg->varinfo [i];
12881
12882                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12883                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12884                 }
12885         }
12886
12887         if (cfg->lmf_var && cfg->method == method) {
12888                 cfg->cbb = init_localsbb;
12889                 emit_push_lmf (cfg);
12890         }
12891
12892         cfg->cbb = init_localsbb;
12893         emit_instrumentation_call (cfg, mono_profiler_method_enter);
12894
12895         if (seq_points) {
12896                 MonoBasicBlock *bb;
12897
12898                 /*
12899                  * Make seq points at backward branch targets interruptable.
12900                  */
12901                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12902                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12903                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12904         }
12905
12906         /* Add a sequence point for method entry/exit events */
12907         if (cfg->gen_seq_points_debug_data) {
12908                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12909                 MONO_ADD_INS (init_localsbb, ins);
12910                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12911                 MONO_ADD_INS (cfg->bb_exit, ins);
12912         }
12913
12914         /*
12915          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12916          * the code they refer to was dead (#11880).
12917          */
12918         if (sym_seq_points) {
12919                 for (i = 0; i < header->code_size; ++i) {
12920                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12921                                 MonoInst *ins;
12922
12923                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12924                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12925                         }
12926                 }
12927         }
12928
12929         cfg->ip = NULL;
12930
12931         if (cfg->method == method) {
12932                 MonoBasicBlock *bb;
12933                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12934                         bb->region = mono_find_block_region (cfg, bb->real_offset);
12935                         if (cfg->spvars)
12936                                 mono_create_spvar_for_region (cfg, bb->region);
12937                         if (cfg->verbose_level > 2)
12938                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12939                 }
12940         }
12941
12942         if (inline_costs < 0) {
12943                 char *mname;
12944
12945                 /* Method is too large */
12946                 mname = mono_method_full_name (method, TRUE);
12947                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
12948                 cfg->exception_message = g_strdup_printf ("Method %s is too complex.", mname);
12949                 g_free (mname);
12950         }
12951
12952         if ((cfg->verbose_level > 2) && (cfg->method == method))
12953                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12954
12955         goto cleanup;
12956
12957 mono_error_exit:
12958         g_assert (!mono_error_ok (&cfg->error));
12959         goto cleanup;
12960
12961  exception_exit:
12962         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12963         goto cleanup;
12964
12965  unverified:
12966         set_exception_type_from_invalid_il (cfg, method, ip);
12967         goto cleanup;
12968
12969  cleanup:
12970         g_slist_free (class_inits);
12971         mono_basic_block_free (original_bb);
12972         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12973         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
12974         if (cfg->exception_type)
12975                 return -1;
12976         else
12977                 return inline_costs;
12978 }
12979
12980 static int
12981 store_membase_reg_to_store_membase_imm (int opcode)
12982 {
12983         switch (opcode) {
12984         case OP_STORE_MEMBASE_REG:
12985                 return OP_STORE_MEMBASE_IMM;
12986         case OP_STOREI1_MEMBASE_REG:
12987                 return OP_STOREI1_MEMBASE_IMM;
12988         case OP_STOREI2_MEMBASE_REG:
12989                 return OP_STOREI2_MEMBASE_IMM;
12990         case OP_STOREI4_MEMBASE_REG:
12991                 return OP_STOREI4_MEMBASE_IMM;
12992         case OP_STOREI8_MEMBASE_REG:
12993                 return OP_STOREI8_MEMBASE_IMM;
12994         default:
12995                 g_assert_not_reached ();
12996         }
12997
12998         return -1;
12999 }
13000
13001 int
13002 mono_op_to_op_imm (int opcode)
13003 {
13004         switch (opcode) {
13005         case OP_IADD:
13006                 return OP_IADD_IMM;
13007         case OP_ISUB:
13008                 return OP_ISUB_IMM;
13009         case OP_IDIV:
13010                 return OP_IDIV_IMM;
13011         case OP_IDIV_UN:
13012                 return OP_IDIV_UN_IMM;
13013         case OP_IREM:
13014                 return OP_IREM_IMM;
13015         case OP_IREM_UN:
13016                 return OP_IREM_UN_IMM;
13017         case OP_IMUL:
13018                 return OP_IMUL_IMM;
13019         case OP_IAND:
13020                 return OP_IAND_IMM;
13021         case OP_IOR:
13022                 return OP_IOR_IMM;
13023         case OP_IXOR:
13024                 return OP_IXOR_IMM;
13025         case OP_ISHL:
13026                 return OP_ISHL_IMM;
13027         case OP_ISHR:
13028                 return OP_ISHR_IMM;
13029         case OP_ISHR_UN:
13030                 return OP_ISHR_UN_IMM;
13031
13032         case OP_LADD:
13033                 return OP_LADD_IMM;
13034         case OP_LSUB:
13035                 return OP_LSUB_IMM;
13036         case OP_LAND:
13037                 return OP_LAND_IMM;
13038         case OP_LOR:
13039                 return OP_LOR_IMM;
13040         case OP_LXOR:
13041                 return OP_LXOR_IMM;
13042         case OP_LSHL:
13043                 return OP_LSHL_IMM;
13044         case OP_LSHR:
13045                 return OP_LSHR_IMM;
13046         case OP_LSHR_UN:
13047                 return OP_LSHR_UN_IMM;
13048 #if SIZEOF_REGISTER == 8
13049         case OP_LREM:
13050                 return OP_LREM_IMM;
13051 #endif
13052
13053         case OP_COMPARE:
13054                 return OP_COMPARE_IMM;
13055         case OP_ICOMPARE:
13056                 return OP_ICOMPARE_IMM;
13057         case OP_LCOMPARE:
13058                 return OP_LCOMPARE_IMM;
13059
13060         case OP_STORE_MEMBASE_REG:
13061                 return OP_STORE_MEMBASE_IMM;
13062         case OP_STOREI1_MEMBASE_REG:
13063                 return OP_STOREI1_MEMBASE_IMM;
13064         case OP_STOREI2_MEMBASE_REG:
13065                 return OP_STOREI2_MEMBASE_IMM;
13066         case OP_STOREI4_MEMBASE_REG:
13067                 return OP_STOREI4_MEMBASE_IMM;
13068
13069 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13070         case OP_X86_PUSH:
13071                 return OP_X86_PUSH_IMM;
13072         case OP_X86_COMPARE_MEMBASE_REG:
13073                 return OP_X86_COMPARE_MEMBASE_IMM;
13074 #endif
13075 #if defined(TARGET_AMD64)
13076         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13077                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13078 #endif
13079         case OP_VOIDCALL_REG:
13080                 return OP_VOIDCALL;
13081         case OP_CALL_REG:
13082                 return OP_CALL;
13083         case OP_LCALL_REG:
13084                 return OP_LCALL;
13085         case OP_FCALL_REG:
13086                 return OP_FCALL;
13087         case OP_LOCALLOC:
13088                 return OP_LOCALLOC_IMM;
13089         }
13090
13091         return -1;
13092 }
13093
13094 static int
13095 ldind_to_load_membase (int opcode)
13096 {
13097         switch (opcode) {
13098         case CEE_LDIND_I1:
13099                 return OP_LOADI1_MEMBASE;
13100         case CEE_LDIND_U1:
13101                 return OP_LOADU1_MEMBASE;
13102         case CEE_LDIND_I2:
13103                 return OP_LOADI2_MEMBASE;
13104         case CEE_LDIND_U2:
13105                 return OP_LOADU2_MEMBASE;
13106         case CEE_LDIND_I4:
13107                 return OP_LOADI4_MEMBASE;
13108         case CEE_LDIND_U4:
13109                 return OP_LOADU4_MEMBASE;
13110         case CEE_LDIND_I:
13111                 return OP_LOAD_MEMBASE;
13112         case CEE_LDIND_REF:
13113                 return OP_LOAD_MEMBASE;
13114         case CEE_LDIND_I8:
13115                 return OP_LOADI8_MEMBASE;
13116         case CEE_LDIND_R4:
13117                 return OP_LOADR4_MEMBASE;
13118         case CEE_LDIND_R8:
13119                 return OP_LOADR8_MEMBASE;
13120         default:
13121                 g_assert_not_reached ();
13122         }
13123
13124         return -1;
13125 }
13126
13127 static int
13128 stind_to_store_membase (int opcode)
13129 {
13130         switch (opcode) {
13131         case CEE_STIND_I1:
13132                 return OP_STOREI1_MEMBASE_REG;
13133         case CEE_STIND_I2:
13134                 return OP_STOREI2_MEMBASE_REG;
13135         case CEE_STIND_I4:
13136                 return OP_STOREI4_MEMBASE_REG;
13137         case CEE_STIND_I:
13138         case CEE_STIND_REF:
13139                 return OP_STORE_MEMBASE_REG;
13140         case CEE_STIND_I8:
13141                 return OP_STOREI8_MEMBASE_REG;
13142         case CEE_STIND_R4:
13143                 return OP_STORER4_MEMBASE_REG;
13144         case CEE_STIND_R8:
13145                 return OP_STORER8_MEMBASE_REG;
13146         default:
13147                 g_assert_not_reached ();
13148         }
13149
13150         return -1;
13151 }
13152
13153 int
13154 mono_load_membase_to_load_mem (int opcode)
13155 {
13156         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13157 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13158         switch (opcode) {
13159         case OP_LOAD_MEMBASE:
13160                 return OP_LOAD_MEM;
13161         case OP_LOADU1_MEMBASE:
13162                 return OP_LOADU1_MEM;
13163         case OP_LOADU2_MEMBASE:
13164                 return OP_LOADU2_MEM;
13165         case OP_LOADI4_MEMBASE:
13166                 return OP_LOADI4_MEM;
13167         case OP_LOADU4_MEMBASE:
13168                 return OP_LOADU4_MEM;
13169 #if SIZEOF_REGISTER == 8
13170         case OP_LOADI8_MEMBASE:
13171                 return OP_LOADI8_MEM;
13172 #endif
13173         }
13174 #endif
13175
13176         return -1;
13177 }
13178
13179 static inline int
13180 op_to_op_dest_membase (int store_opcode, int opcode)
13181 {
13182 #if defined(TARGET_X86)
13183         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13184                 return -1;
13185
13186         switch (opcode) {
13187         case OP_IADD:
13188                 return OP_X86_ADD_MEMBASE_REG;
13189         case OP_ISUB:
13190                 return OP_X86_SUB_MEMBASE_REG;
13191         case OP_IAND:
13192                 return OP_X86_AND_MEMBASE_REG;
13193         case OP_IOR:
13194                 return OP_X86_OR_MEMBASE_REG;
13195         case OP_IXOR:
13196                 return OP_X86_XOR_MEMBASE_REG;
13197         case OP_ADD_IMM:
13198         case OP_IADD_IMM:
13199                 return OP_X86_ADD_MEMBASE_IMM;
13200         case OP_SUB_IMM:
13201         case OP_ISUB_IMM:
13202                 return OP_X86_SUB_MEMBASE_IMM;
13203         case OP_AND_IMM:
13204         case OP_IAND_IMM:
13205                 return OP_X86_AND_MEMBASE_IMM;
13206         case OP_OR_IMM:
13207         case OP_IOR_IMM:
13208                 return OP_X86_OR_MEMBASE_IMM;
13209         case OP_XOR_IMM:
13210         case OP_IXOR_IMM:
13211                 return OP_X86_XOR_MEMBASE_IMM;
13212         case OP_MOVE:
13213                 return OP_NOP;
13214         }
13215 #endif
13216
13217 #if defined(TARGET_AMD64)
13218         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13219                 return -1;
13220
13221         switch (opcode) {
13222         case OP_IADD:
13223                 return OP_X86_ADD_MEMBASE_REG;
13224         case OP_ISUB:
13225                 return OP_X86_SUB_MEMBASE_REG;
13226         case OP_IAND:
13227                 return OP_X86_AND_MEMBASE_REG;
13228         case OP_IOR:
13229                 return OP_X86_OR_MEMBASE_REG;
13230         case OP_IXOR:
13231                 return OP_X86_XOR_MEMBASE_REG;
13232         case OP_IADD_IMM:
13233                 return OP_X86_ADD_MEMBASE_IMM;
13234         case OP_ISUB_IMM:
13235                 return OP_X86_SUB_MEMBASE_IMM;
13236         case OP_IAND_IMM:
13237                 return OP_X86_AND_MEMBASE_IMM;
13238         case OP_IOR_IMM:
13239                 return OP_X86_OR_MEMBASE_IMM;
13240         case OP_IXOR_IMM:
13241                 return OP_X86_XOR_MEMBASE_IMM;
13242         case OP_LADD:
13243                 return OP_AMD64_ADD_MEMBASE_REG;
13244         case OP_LSUB:
13245                 return OP_AMD64_SUB_MEMBASE_REG;
13246         case OP_LAND:
13247                 return OP_AMD64_AND_MEMBASE_REG;
13248         case OP_LOR:
13249                 return OP_AMD64_OR_MEMBASE_REG;
13250         case OP_LXOR:
13251                 return OP_AMD64_XOR_MEMBASE_REG;
13252         case OP_ADD_IMM:
13253         case OP_LADD_IMM:
13254                 return OP_AMD64_ADD_MEMBASE_IMM;
13255         case OP_SUB_IMM:
13256         case OP_LSUB_IMM:
13257                 return OP_AMD64_SUB_MEMBASE_IMM;
13258         case OP_AND_IMM:
13259         case OP_LAND_IMM:
13260                 return OP_AMD64_AND_MEMBASE_IMM;
13261         case OP_OR_IMM:
13262         case OP_LOR_IMM:
13263                 return OP_AMD64_OR_MEMBASE_IMM;
13264         case OP_XOR_IMM:
13265         case OP_LXOR_IMM:
13266                 return OP_AMD64_XOR_MEMBASE_IMM;
13267         case OP_MOVE:
13268                 return OP_NOP;
13269         }
13270 #endif
13271
13272         return -1;
13273 }
13274
13275 static inline int
13276 op_to_op_store_membase (int store_opcode, int opcode)
13277 {
13278 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13279         switch (opcode) {
13280         case OP_ICEQ:
13281                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13282                         return OP_X86_SETEQ_MEMBASE;
13283         case OP_CNE:
13284                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13285                         return OP_X86_SETNE_MEMBASE;
13286         }
13287 #endif
13288
13289         return -1;
13290 }
13291
13292 static inline int
13293 op_to_op_src1_membase (int load_opcode, int opcode)
13294 {
13295 #ifdef TARGET_X86
13296         /* FIXME: This has sign extension issues */
13297         /*
13298         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13299                 return OP_X86_COMPARE_MEMBASE8_IMM;
13300         */
13301
13302         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13303                 return -1;
13304
13305         switch (opcode) {
13306         case OP_X86_PUSH:
13307                 return OP_X86_PUSH_MEMBASE;
13308         case OP_COMPARE_IMM:
13309         case OP_ICOMPARE_IMM:
13310                 return OP_X86_COMPARE_MEMBASE_IMM;
13311         case OP_COMPARE:
13312         case OP_ICOMPARE:
13313                 return OP_X86_COMPARE_MEMBASE_REG;
13314         }
13315 #endif
13316
13317 #ifdef TARGET_AMD64
13318         /* FIXME: This has sign extension issues */
13319         /*
13320         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13321                 return OP_X86_COMPARE_MEMBASE8_IMM;
13322         */
13323
13324         switch (opcode) {
13325         case OP_X86_PUSH:
13326 #ifdef __mono_ilp32__
13327                 if (load_opcode == OP_LOADI8_MEMBASE)
13328 #else
13329                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13330 #endif
13331                         return OP_X86_PUSH_MEMBASE;
13332                 break;
13333                 /* FIXME: This only works for 32 bit immediates
13334         case OP_COMPARE_IMM:
13335         case OP_LCOMPARE_IMM:
13336                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13337                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13338                 */
13339         case OP_ICOMPARE_IMM:
13340                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13341                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13342                 break;
13343         case OP_COMPARE:
13344         case OP_LCOMPARE:
13345 #ifdef __mono_ilp32__
13346                 if (load_opcode == OP_LOAD_MEMBASE)
13347                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13348                 if (load_opcode == OP_LOADI8_MEMBASE)
13349 #else
13350                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13351 #endif
13352                         return OP_AMD64_COMPARE_MEMBASE_REG;
13353                 break;
13354         case OP_ICOMPARE:
13355                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13356                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13357                 break;
13358         }
13359 #endif
13360
13361         return -1;
13362 }
13363
13364 static inline int
13365 op_to_op_src2_membase (int load_opcode, int opcode)
13366 {
13367 #ifdef TARGET_X86
13368         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13369                 return -1;
13370
13371         switch (opcode) {
13372         case OP_COMPARE:
13373         case OP_ICOMPARE:
13374                 return OP_X86_COMPARE_REG_MEMBASE;
13375         case OP_IADD:
13376                 return OP_X86_ADD_REG_MEMBASE;
13377         case OP_ISUB:
13378                 return OP_X86_SUB_REG_MEMBASE;
13379         case OP_IAND:
13380                 return OP_X86_AND_REG_MEMBASE;
13381         case OP_IOR:
13382                 return OP_X86_OR_REG_MEMBASE;
13383         case OP_IXOR:
13384                 return OP_X86_XOR_REG_MEMBASE;
13385         }
13386 #endif
13387
13388 #ifdef TARGET_AMD64
13389 #ifdef __mono_ilp32__
13390         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE) ) {
13391 #else
13392         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)) {
13393 #endif
13394                 switch (opcode) {
13395                 case OP_ICOMPARE:
13396                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13397                 case OP_IADD:
13398                         return OP_X86_ADD_REG_MEMBASE;
13399                 case OP_ISUB:
13400                         return OP_X86_SUB_REG_MEMBASE;
13401                 case OP_IAND:
13402                         return OP_X86_AND_REG_MEMBASE;
13403                 case OP_IOR:
13404                         return OP_X86_OR_REG_MEMBASE;
13405                 case OP_IXOR:
13406                         return OP_X86_XOR_REG_MEMBASE;
13407                 }
13408 #ifdef __mono_ilp32__
13409         } else if (load_opcode == OP_LOADI8_MEMBASE) {
13410 #else
13411         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE)) {
13412 #endif
13413                 switch (opcode) {
13414                 case OP_COMPARE:
13415                 case OP_LCOMPARE:
13416                         return OP_AMD64_COMPARE_REG_MEMBASE;
13417                 case OP_LADD:
13418                         return OP_AMD64_ADD_REG_MEMBASE;
13419                 case OP_LSUB:
13420                         return OP_AMD64_SUB_REG_MEMBASE;
13421                 case OP_LAND:
13422                         return OP_AMD64_AND_REG_MEMBASE;
13423                 case OP_LOR:
13424                         return OP_AMD64_OR_REG_MEMBASE;
13425                 case OP_LXOR:
13426                         return OP_AMD64_XOR_REG_MEMBASE;
13427                 }
13428         }
13429 #endif
13430
13431         return -1;
13432 }
13433
13434 int
13435 mono_op_to_op_imm_noemul (int opcode)
13436 {
13437         switch (opcode) {
13438 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13439         case OP_LSHR:
13440         case OP_LSHL:
13441         case OP_LSHR_UN:
13442                 return -1;
13443 #endif
13444 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13445         case OP_IDIV:
13446         case OP_IDIV_UN:
13447         case OP_IREM:
13448         case OP_IREM_UN:
13449                 return -1;
13450 #endif
13451 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13452         case OP_IMUL:
13453                 return -1;
13454 #endif
13455         default:
13456                 return mono_op_to_op_imm (opcode);
13457         }
13458 }
13459
13460 /**
13461  * mono_handle_global_vregs:
13462  *
13463  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13464  * for them.
13465  */
13466 void
13467 mono_handle_global_vregs (MonoCompile *cfg)
13468 {
13469         gint32 *vreg_to_bb;
13470         MonoBasicBlock *bb;
13471         int i, pos;
13472
13473         vreg_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13474
13475 #ifdef MONO_ARCH_SIMD_INTRINSICS
13476         if (cfg->uses_simd_intrinsics)
13477                 mono_simd_simplify_indirection (cfg);
13478 #endif
13479
13480         /* Find local vregs used in more than one bb */
13481         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13482                 MonoInst *ins = bb->code;
13483                 int block_num = bb->block_num;
13484
13485                 if (cfg->verbose_level > 2)
13486                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13487
13488                 cfg->cbb = bb;
13489                 for (; ins; ins = ins->next) {
13490                         const char *spec = INS_INFO (ins->opcode);
13491                         int regtype = 0, regindex;
13492                         gint32 prev_bb;
13493
13494                         if (G_UNLIKELY (cfg->verbose_level > 2))
13495                                 mono_print_ins (ins);
13496
13497                         g_assert (ins->opcode >= MONO_CEE_LAST);
13498
13499                         for (regindex = 0; regindex < 4; regindex ++) {
13500                                 int vreg = 0;
13501
13502                                 if (regindex == 0) {
13503                                         regtype = spec [MONO_INST_DEST];
13504                                         if (regtype == ' ')
13505                                                 continue;
13506                                         vreg = ins->dreg;
13507                                 } else if (regindex == 1) {
13508                                         regtype = spec [MONO_INST_SRC1];
13509                                         if (regtype == ' ')
13510                                                 continue;
13511                                         vreg = ins->sreg1;
13512                                 } else if (regindex == 2) {
13513                                         regtype = spec [MONO_INST_SRC2];
13514                                         if (regtype == ' ')
13515                                                 continue;
13516                                         vreg = ins->sreg2;
13517                                 } else if (regindex == 3) {
13518                                         regtype = spec [MONO_INST_SRC3];
13519                                         if (regtype == ' ')
13520                                                 continue;
13521                                         vreg = ins->sreg3;
13522                                 }
13523
13524 #if SIZEOF_REGISTER == 4
13525                                 /* In the LLVM case, the long opcodes are not decomposed */
13526                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13527                                         /*
13528                                          * Since some instructions reference the original long vreg,
13529                                          * and some reference the two component vregs, it is quite hard
13530                                          * to determine when it needs to be global. So be conservative.
13531                                          */
13532                                         if (!get_vreg_to_inst (cfg, vreg)) {
13533                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13534
13535                                                 if (cfg->verbose_level > 2)
13536                                                         printf ("LONG VREG R%d made global.\n", vreg);
13537                                         }
13538
13539                                         /*
13540                                          * Make the component vregs volatile since the optimizations can
13541                                          * get confused otherwise.
13542                                          */
13543                                         get_vreg_to_inst (cfg, vreg + 1)->flags |= MONO_INST_VOLATILE;
13544                                         get_vreg_to_inst (cfg, vreg + 2)->flags |= MONO_INST_VOLATILE;
13545                                 }
13546 #endif
13547
13548                                 g_assert (vreg != -1);
13549
13550                                 prev_bb = vreg_to_bb [vreg];
13551                                 if (prev_bb == 0) {
13552                                         /* 0 is a valid block num */
13553                                         vreg_to_bb [vreg] = block_num + 1;
13554                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13555                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13556                                                 continue;
13557
13558                                         if (!get_vreg_to_inst (cfg, vreg)) {
13559                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13560                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13561
13562                                                 switch (regtype) {
13563                                                 case 'i':
13564                                                         if (vreg_is_ref (cfg, vreg))
13565                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13566                                                         else
13567                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13568                                                         break;
13569                                                 case 'l':
13570                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13571                                                         break;
13572                                                 case 'f':
13573                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13574                                                         break;
13575                                                 case 'v':
13576                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13577                                                         break;
13578                                                 default:
13579                                                         g_assert_not_reached ();
13580                                                 }
13581                                         }
13582
13583                                         /* Flag as having been used in more than one bb */
13584                                         vreg_to_bb [vreg] = -1;
13585                                 }
13586                         }
13587                 }
13588         }
13589
13590         /* If a variable is used in only one bblock, convert it into a local vreg */
13591         for (i = 0; i < cfg->num_varinfo; i++) {
13592                 MonoInst *var = cfg->varinfo [i];
13593                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13594
13595                 switch (var->type) {
13596                 case STACK_I4:
13597                 case STACK_OBJ:
13598                 case STACK_PTR:
13599                 case STACK_MP:
13600                 case STACK_VTYPE:
13601 #if SIZEOF_REGISTER == 8
13602                 case STACK_I8:
13603 #endif
13604 #if !defined(TARGET_X86)
13605                 /* Enabling this screws up the fp stack on x86 */
13606                 case STACK_R8:
13607 #endif
13608                         if (mono_arch_is_soft_float ())
13609                                 break;
13610
13611                         /* Arguments are implicitly global */
13612                         /* Putting R4 vars into registers doesn't work currently */
13613                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13614                         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) {
13615                                 /*
13616                                  * Make that the variable's liveness interval doesn't contain a call, since
13617                                  * that would cause the lvreg to be spilled, making the whole optimization
13618                                  * useless.
13619                                  */
13620                                 /* This is too slow for JIT compilation */
13621 #if 0
13622                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13623                                         MonoInst *ins;
13624                                         int def_index, call_index, ins_index;
13625                                         gboolean spilled = FALSE;
13626
13627                                         def_index = -1;
13628                                         call_index = -1;
13629                                         ins_index = 0;
13630                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13631                                                 const char *spec = INS_INFO (ins->opcode);
13632
13633                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13634                                                         def_index = ins_index;
13635
13636                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13637                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13638                                                         if (call_index > def_index) {
13639                                                                 spilled = TRUE;
13640                                                                 break;
13641                                                         }
13642                                                 }
13643
13644                                                 if (MONO_IS_CALL (ins))
13645                                                         call_index = ins_index;
13646
13647                                                 ins_index ++;
13648                                         }
13649
13650                                         if (spilled)
13651                                                 break;
13652                                 }
13653 #endif
13654
13655                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13656                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13657                                 var->flags |= MONO_INST_IS_DEAD;
13658                                 cfg->vreg_to_inst [var->dreg] = NULL;
13659                         }
13660                         break;
13661                 }
13662         }
13663
13664         /*
13665          * Compress the varinfo and vars tables so the liveness computation is faster and
13666          * takes up less space.
13667          */
13668         pos = 0;
13669         for (i = 0; i < cfg->num_varinfo; ++i) {
13670                 MonoInst *var = cfg->varinfo [i];
13671                 if (pos < i && cfg->locals_start == i)
13672                         cfg->locals_start = pos;
13673                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13674                         if (pos < i) {
13675                                 cfg->varinfo [pos] = cfg->varinfo [i];
13676                                 cfg->varinfo [pos]->inst_c0 = pos;
13677                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13678                                 cfg->vars [pos].idx = pos;
13679 #if SIZEOF_REGISTER == 4
13680                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13681                                         /* Modify the two component vars too */
13682                                         MonoInst *var1;
13683
13684                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 1);
13685                                         var1->inst_c0 = pos;
13686                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 2);
13687                                         var1->inst_c0 = pos;
13688                                 }
13689 #endif
13690                         }
13691                         pos ++;
13692                 }
13693         }
13694         cfg->num_varinfo = pos;
13695         if (cfg->locals_start > cfg->num_varinfo)
13696                 cfg->locals_start = cfg->num_varinfo;
13697 }
13698
13699 /**
13700  * mono_spill_global_vars:
13701  *
13702  *   Generate spill code for variables which are not allocated to registers,
13703  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13704  * code is generated which could be optimized by the local optimization passes.
13705  */
13706 void
13707 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13708 {
13709         MonoBasicBlock *bb;
13710         char spec2 [16];
13711         int orig_next_vreg;
13712         guint32 *vreg_to_lvreg;
13713         guint32 *lvregs;
13714         guint32 i, lvregs_len;
13715         gboolean dest_has_lvreg = FALSE;
13716         guint32 stacktypes [128];
13717         MonoInst **live_range_start, **live_range_end;
13718         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13719         int *gsharedvt_vreg_to_idx = NULL;
13720
13721         *need_local_opts = FALSE;
13722
13723         memset (spec2, 0, sizeof (spec2));
13724
13725         /* FIXME: Move this function to mini.c */
13726         stacktypes ['i'] = STACK_PTR;
13727         stacktypes ['l'] = STACK_I8;
13728         stacktypes ['f'] = STACK_R8;
13729 #ifdef MONO_ARCH_SIMD_INTRINSICS
13730         stacktypes ['x'] = STACK_VTYPE;
13731 #endif
13732
13733 #if SIZEOF_REGISTER == 4
13734         /* Create MonoInsts for longs */
13735         for (i = 0; i < cfg->num_varinfo; i++) {
13736                 MonoInst *ins = cfg->varinfo [i];
13737
13738                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13739                         switch (ins->type) {
13740                         case STACK_R8:
13741                         case STACK_I8: {
13742                                 MonoInst *tree;
13743
13744                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13745                                         break;
13746
13747                                 g_assert (ins->opcode == OP_REGOFFSET);
13748
13749                                 tree = get_vreg_to_inst (cfg, ins->dreg + 1);
13750                                 g_assert (tree);
13751                                 tree->opcode = OP_REGOFFSET;
13752                                 tree->inst_basereg = ins->inst_basereg;
13753                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13754
13755                                 tree = get_vreg_to_inst (cfg, ins->dreg + 2);
13756                                 g_assert (tree);
13757                                 tree->opcode = OP_REGOFFSET;
13758                                 tree->inst_basereg = ins->inst_basereg;
13759                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13760                                 break;
13761                         }
13762                         default:
13763                                 break;
13764                         }
13765                 }
13766         }
13767 #endif
13768
13769         if (cfg->compute_gc_maps) {
13770                 /* registers need liveness info even for !non refs */
13771                 for (i = 0; i < cfg->num_varinfo; i++) {
13772                         MonoInst *ins = cfg->varinfo [i];
13773
13774                         if (ins->opcode == OP_REGVAR)
13775                                 ins->flags |= MONO_INST_GC_TRACK;
13776                 }
13777         }
13778
13779         if (cfg->gsharedvt) {
13780                 gsharedvt_vreg_to_idx = mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13781
13782                 for (i = 0; i < cfg->num_varinfo; ++i) {
13783                         MonoInst *ins = cfg->varinfo [i];
13784                         int idx;
13785
13786                         if (mini_is_gsharedvt_variable_type (cfg, ins->inst_vtype)) {
13787                                 if (i >= cfg->locals_start) {
13788                                         /* Local */
13789                                         idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13790                                         gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13791                                         ins->opcode = OP_GSHAREDVT_LOCAL;
13792                                         ins->inst_imm = idx;
13793                                 } else {
13794                                         /* Arg */
13795                                         gsharedvt_vreg_to_idx [ins->dreg] = -1;
13796                                         ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13797                                 }
13798                         }
13799                 }
13800         }
13801
13802         /* FIXME: widening and truncation */
13803
13804         /*
13805          * As an optimization, when a variable allocated to the stack is first loaded into
13806          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13807          * the variable again.
13808          */
13809         orig_next_vreg = cfg->next_vreg;
13810         vreg_to_lvreg = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13811         lvregs = mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
13812         lvregs_len = 0;
13813
13814         /*
13815          * These arrays contain the first and last instructions accessing a given
13816          * variable.
13817          * Since we emit bblocks in the same order we process them here, and we
13818          * don't split live ranges, these will precisely describe the live range of
13819          * the variable, i.e. the instruction range where a valid value can be found
13820          * in the variables location.
13821          * The live range is computed using the liveness info computed by the liveness pass.
13822          * We can't use vmv->range, since that is an abstract live range, and we need
13823          * one which is instruction precise.
13824          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13825          */
13826         /* FIXME: Only do this if debugging info is requested */
13827         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13828         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13829         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13830         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13831
13832         /* Add spill loads/stores */
13833         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13834                 MonoInst *ins;
13835
13836                 if (cfg->verbose_level > 2)
13837                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13838
13839                 /* Clear vreg_to_lvreg array */
13840                 for (i = 0; i < lvregs_len; i++)
13841                         vreg_to_lvreg [lvregs [i]] = 0;
13842                 lvregs_len = 0;
13843
13844                 cfg->cbb = bb;
13845                 MONO_BB_FOR_EACH_INS (bb, ins) {
13846                         const char *spec = INS_INFO (ins->opcode);
13847                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13848                         gboolean store, no_lvreg;
13849                         int sregs [MONO_MAX_SRC_REGS];
13850
13851                         if (G_UNLIKELY (cfg->verbose_level > 2))
13852                                 mono_print_ins (ins);
13853
13854                         if (ins->opcode == OP_NOP)
13855                                 continue;
13856
13857                         /*
13858                          * We handle LDADDR here as well, since it can only be decomposed
13859                          * when variable addresses are known.
13860                          */
13861                         if (ins->opcode == OP_LDADDR) {
13862                                 MonoInst *var = ins->inst_p0;
13863
13864                                 if (var->opcode == OP_VTARG_ADDR) {
13865                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13866                                         MonoInst *vtaddr = var->inst_left;
13867                                         if (vtaddr->opcode == OP_REGVAR) {
13868                                                 ins->opcode = OP_MOVE;
13869                                                 ins->sreg1 = vtaddr->dreg;
13870                                         }
13871                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13872                                                 ins->opcode = OP_LOAD_MEMBASE;
13873                                                 ins->inst_basereg = vtaddr->inst_basereg;
13874                                                 ins->inst_offset = vtaddr->inst_offset;
13875                                         } else
13876                                                 NOT_IMPLEMENTED;
13877                                 } else if (cfg->gsharedvt && gsharedvt_vreg_to_idx [var->dreg] < 0) {
13878                                         /* gsharedvt arg passed by ref */
13879                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13880
13881                                         ins->opcode = OP_LOAD_MEMBASE;
13882                                         ins->inst_basereg = var->inst_basereg;
13883                                         ins->inst_offset = var->inst_offset;
13884                                 } else if (cfg->gsharedvt && gsharedvt_vreg_to_idx [var->dreg]) {
13885                                         MonoInst *load, *load2, *load3;
13886                                         int idx = gsharedvt_vreg_to_idx [var->dreg] - 1;
13887                                         int reg1, reg2, reg3;
13888                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13889                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13890
13891                                         /*
13892                                          * gsharedvt local.
13893                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13894                                          */
13895
13896                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13897
13898                                         g_assert (info_var);
13899                                         g_assert (locals_var);
13900
13901                                         /* Mark the instruction used to compute the locals var as used */
13902                                         cfg->gsharedvt_locals_var_ins = NULL;
13903
13904                                         /* Load the offset */
13905                                         if (info_var->opcode == OP_REGOFFSET) {
13906                                                 reg1 = alloc_ireg (cfg);
13907                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13908                                         } else if (info_var->opcode == OP_REGVAR) {
13909                                                 load = NULL;
13910                                                 reg1 = info_var->dreg;
13911                                         } else {
13912                                                 g_assert_not_reached ();
13913                                         }
13914                                         reg2 = alloc_ireg (cfg);
13915                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13916                                         /* Load the locals area address */
13917                                         reg3 = alloc_ireg (cfg);
13918                                         if (locals_var->opcode == OP_REGOFFSET) {
13919                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13920                                         } else if (locals_var->opcode == OP_REGVAR) {
13921                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13922                                         } else {
13923                                                 g_assert_not_reached ();
13924                                         }
13925                                         /* Compute the address */
13926                                         ins->opcode = OP_PADD;
13927                                         ins->sreg1 = reg3;
13928                                         ins->sreg2 = reg2;
13929
13930                                         mono_bblock_insert_before_ins (bb, ins, load3);
13931                                         mono_bblock_insert_before_ins (bb, load3, load2);
13932                                         if (load)
13933                                                 mono_bblock_insert_before_ins (bb, load2, load);
13934                                 } else {
13935                                         g_assert (var->opcode == OP_REGOFFSET);
13936
13937                                         ins->opcode = OP_ADD_IMM;
13938                                         ins->sreg1 = var->inst_basereg;
13939                                         ins->inst_imm = var->inst_offset;
13940                                 }
13941
13942                                 *need_local_opts = TRUE;
13943                                 spec = INS_INFO (ins->opcode);
13944                         }
13945
13946                         if (ins->opcode < MONO_CEE_LAST) {
13947                                 mono_print_ins (ins);
13948                                 g_assert_not_reached ();
13949                         }
13950
13951                         /*
13952                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13953                          * src register.
13954                          * FIXME:
13955                          */
13956                         if (MONO_IS_STORE_MEMBASE (ins)) {
13957                                 tmp_reg = ins->dreg;
13958                                 ins->dreg = ins->sreg2;
13959                                 ins->sreg2 = tmp_reg;
13960                                 store = TRUE;
13961
13962                                 spec2 [MONO_INST_DEST] = ' ';
13963                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13964                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13965                                 spec2 [MONO_INST_SRC3] = ' ';
13966                                 spec = spec2;
13967                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13968                                 g_assert_not_reached ();
13969                         else
13970                                 store = FALSE;
13971                         no_lvreg = FALSE;
13972
13973                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13974                                 printf ("\t %.3s %d", spec, ins->dreg);
13975                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13976                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13977                                         printf (" %d", sregs [srcindex]);
13978                                 printf ("\n");
13979                         }
13980
13981                         /***************/
13982                         /*    DREG     */
13983                         /***************/
13984                         regtype = spec [MONO_INST_DEST];
13985                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13986                         prev_dreg = -1;
13987
13988                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13989                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13990                                 MonoInst *store_ins;
13991                                 int store_opcode;
13992                                 MonoInst *def_ins = ins;
13993                                 int dreg = ins->dreg; /* The original vreg */
13994
13995                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13996
13997                                 if (var->opcode == OP_REGVAR) {
13998                                         ins->dreg = var->dreg;
13999                                 } 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)) {
14000                                         /*
14001                                          * Instead of emitting a load+store, use a _membase opcode.
14002                                          */
14003                                         g_assert (var->opcode == OP_REGOFFSET);
14004                                         if (ins->opcode == OP_MOVE) {
14005                                                 NULLIFY_INS (ins);
14006                                                 def_ins = NULL;
14007                                         } else {
14008                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14009                                                 ins->inst_basereg = var->inst_basereg;
14010                                                 ins->inst_offset = var->inst_offset;
14011                                                 ins->dreg = -1;
14012                                         }
14013                                         spec = INS_INFO (ins->opcode);
14014                                 } else {
14015                                         guint32 lvreg;
14016
14017                                         g_assert (var->opcode == OP_REGOFFSET);
14018
14019                                         prev_dreg = ins->dreg;
14020
14021                                         /* Invalidate any previous lvreg for this vreg */
14022                                         vreg_to_lvreg [ins->dreg] = 0;
14023
14024                                         lvreg = 0;
14025
14026                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14027                                                 regtype = 'l';
14028                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14029                                         }
14030
14031                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14032
14033 #if SIZEOF_REGISTER != 8
14034                                         if (regtype == 'l') {
14035                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
14036                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14037                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
14038                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14039                                                 def_ins = store_ins;
14040                                         }
14041                                         else
14042 #endif
14043                                         {
14044                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14045
14046                                                 /* Try to fuse the store into the instruction itself */
14047                                                 /* FIXME: Add more instructions */
14048                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14049                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14050                                                         ins->inst_imm = ins->inst_c0;
14051                                                         ins->inst_destbasereg = var->inst_basereg;
14052                                                         ins->inst_offset = var->inst_offset;
14053                                                         spec = INS_INFO (ins->opcode);
14054                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14055                                                         ins->opcode = store_opcode;
14056                                                         ins->inst_destbasereg = var->inst_basereg;
14057                                                         ins->inst_offset = var->inst_offset;
14058
14059                                                         no_lvreg = TRUE;
14060
14061                                                         tmp_reg = ins->dreg;
14062                                                         ins->dreg = ins->sreg2;
14063                                                         ins->sreg2 = tmp_reg;
14064                                                         store = TRUE;
14065
14066                                                         spec2 [MONO_INST_DEST] = ' ';
14067                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14068                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14069                                                         spec2 [MONO_INST_SRC3] = ' ';
14070                                                         spec = spec2;
14071                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14072                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14073                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14074                                                         ins->dreg = -1;
14075                                                         ins->inst_basereg = var->inst_basereg;
14076                                                         ins->inst_offset = var->inst_offset;
14077                                                         spec = INS_INFO (ins->opcode);
14078                                                 } else {
14079                                                         /* printf ("INS: "); mono_print_ins (ins); */
14080                                                         /* Create a store instruction */
14081                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14082
14083                                                         /* Insert it after the instruction */
14084                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14085
14086                                                         def_ins = store_ins;
14087
14088                                                         /*
14089                                                          * We can't assign ins->dreg to var->dreg here, since the
14090                                                          * sregs could use it. So set a flag, and do it after
14091                                                          * the sregs.
14092                                                          */
14093                                                         if ((!MONO_ARCH_USE_FPSTACK || ((store_opcode != OP_STORER8_MEMBASE_REG) && (store_opcode != OP_STORER4_MEMBASE_REG))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)))
14094                                                                 dest_has_lvreg = TRUE;
14095                                                 }
14096                                         }
14097                                 }
14098
14099                                 if (def_ins && !live_range_start [dreg]) {
14100                                         live_range_start [dreg] = def_ins;
14101                                         live_range_start_bb [dreg] = bb;
14102                                 }
14103
14104                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14105                                         MonoInst *tmp;
14106
14107                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14108                                         tmp->inst_c1 = dreg;
14109                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14110                                 }
14111                         }
14112
14113                         /************/
14114                         /*  SREGS   */
14115                         /************/
14116                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14117                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14118                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14119                                 sreg = sregs [srcindex];
14120
14121                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14122                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14123                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14124                                         MonoInst *use_ins = ins;
14125                                         MonoInst *load_ins;
14126                                         guint32 load_opcode;
14127
14128                                         if (var->opcode == OP_REGVAR) {
14129                                                 sregs [srcindex] = var->dreg;
14130                                                 //mono_inst_set_src_registers (ins, sregs);
14131                                                 live_range_end [sreg] = use_ins;
14132                                                 live_range_end_bb [sreg] = bb;
14133
14134                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14135                                                         MonoInst *tmp;
14136
14137                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14138                                                         /* var->dreg is a hreg */
14139                                                         tmp->inst_c1 = sreg;
14140                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14141                                                 }
14142
14143                                                 continue;
14144                                         }
14145
14146                                         g_assert (var->opcode == OP_REGOFFSET);
14147
14148                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14149
14150                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14151
14152                                         if (vreg_to_lvreg [sreg]) {
14153                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14154
14155                                                 /* The variable is already loaded to an lvreg */
14156                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14157                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14158                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14159                                                 //mono_inst_set_src_registers (ins, sregs);
14160                                                 continue;
14161                                         }
14162
14163                                         /* Try to fuse the load into the instruction */
14164                                         if ((srcindex == 0) && (op_to_op_src1_membase (load_opcode, ins->opcode) != -1)) {
14165                                                 ins->opcode = op_to_op_src1_membase (load_opcode, ins->opcode);
14166                                                 sregs [0] = var->inst_basereg;
14167                                                 //mono_inst_set_src_registers (ins, sregs);
14168                                                 ins->inst_offset = var->inst_offset;
14169                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (load_opcode, ins->opcode) != -1)) {
14170                                                 ins->opcode = op_to_op_src2_membase (load_opcode, ins->opcode);
14171                                                 sregs [1] = var->inst_basereg;
14172                                                 //mono_inst_set_src_registers (ins, sregs);
14173                                                 ins->inst_offset = var->inst_offset;
14174                                         } else {
14175                                                 if (MONO_IS_REAL_MOVE (ins)) {
14176                                                         ins->opcode = OP_NOP;
14177                                                         sreg = ins->dreg;
14178                                                 } else {
14179                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14180
14181                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14182
14183                                                         if ((!MONO_ARCH_USE_FPSTACK || ((load_opcode != OP_LOADR8_MEMBASE) && (load_opcode != OP_LOADR4_MEMBASE))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && !no_lvreg) {
14184                                                                 if (var->dreg == prev_dreg) {
14185                                                                         /*
14186                                                                          * sreg refers to the value loaded by the load
14187                                                                          * emitted below, but we need to use ins->dreg
14188                                                                          * since it refers to the store emitted earlier.
14189                                                                          */
14190                                                                         sreg = ins->dreg;
14191                                                                 }
14192                                                                 g_assert (sreg != -1);
14193                                                                 vreg_to_lvreg [var->dreg] = sreg;
14194                                                                 g_assert (lvregs_len < 1024);
14195                                                                 lvregs [lvregs_len ++] = var->dreg;
14196                                                         }
14197                                                 }
14198
14199                                                 sregs [srcindex] = sreg;
14200                                                 //mono_inst_set_src_registers (ins, sregs);
14201
14202 #if SIZEOF_REGISTER != 8
14203                                                 if (regtype == 'l') {
14204                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14205                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14206                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14207                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14208                                                         use_ins = load_ins;
14209                                                 }
14210                                                 else
14211 #endif
14212                                                 {
14213 #if SIZEOF_REGISTER == 4
14214                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14215 #endif
14216                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14217                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14218                                                         use_ins = load_ins;
14219                                                 }
14220                                         }
14221
14222                                         if (var->dreg < orig_next_vreg) {
14223                                                 live_range_end [var->dreg] = use_ins;
14224                                                 live_range_end_bb [var->dreg] = bb;
14225                                         }
14226
14227                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14228                                                 MonoInst *tmp;
14229
14230                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14231                                                 tmp->inst_c1 = var->dreg;
14232                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14233                                         }
14234                                 }
14235                         }
14236                         mono_inst_set_src_registers (ins, sregs);
14237
14238                         if (dest_has_lvreg) {
14239                                 g_assert (ins->dreg != -1);
14240                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14241                                 g_assert (lvregs_len < 1024);
14242                                 lvregs [lvregs_len ++] = prev_dreg;
14243                                 dest_has_lvreg = FALSE;
14244                         }
14245
14246                         if (store) {
14247                                 tmp_reg = ins->dreg;
14248                                 ins->dreg = ins->sreg2;
14249                                 ins->sreg2 = tmp_reg;
14250                         }
14251
14252                         if (MONO_IS_CALL (ins)) {
14253                                 /* Clear vreg_to_lvreg array */
14254                                 for (i = 0; i < lvregs_len; i++)
14255                                         vreg_to_lvreg [lvregs [i]] = 0;
14256                                 lvregs_len = 0;
14257                         } else if (ins->opcode == OP_NOP) {
14258                                 ins->dreg = -1;
14259                                 MONO_INST_NULLIFY_SREGS (ins);
14260                         }
14261
14262                         if (cfg->verbose_level > 2)
14263                                 mono_print_ins_index (1, ins);
14264                 }
14265
14266                 /* Extend the live range based on the liveness info */
14267                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14268                         for (i = 0; i < cfg->num_varinfo; i ++) {
14269                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14270
14271                                 if (vreg_is_volatile (cfg, vi->vreg))
14272                                         /* The liveness info is incomplete */
14273                                         continue;
14274
14275                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14276                                         /* Live from at least the first ins of this bb */
14277                                         live_range_start [vi->vreg] = bb->code;
14278                                         live_range_start_bb [vi->vreg] = bb;
14279                                 }
14280
14281                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14282                                         /* Live at least until the last ins of this bb */
14283                                         live_range_end [vi->vreg] = bb->last_ins;
14284                                         live_range_end_bb [vi->vreg] = bb;
14285                                 }
14286                         }
14287                 }
14288         }
14289
14290 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
14291         /*
14292          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14293          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14294          */
14295         if (cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14296                 for (i = 0; i < cfg->num_varinfo; ++i) {
14297                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14298                         MonoInst *ins;
14299
14300                         if (live_range_start [vreg]) {
14301                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14302                                 ins->inst_c0 = i;
14303                                 ins->inst_c1 = vreg;
14304                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14305                         }
14306                         if (live_range_end [vreg]) {
14307                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14308                                 ins->inst_c0 = i;
14309                                 ins->inst_c1 = vreg;
14310                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14311                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14312                                 else
14313                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14314                         }
14315                 }
14316         }
14317 #endif
14318
14319         if (cfg->gsharedvt_locals_var_ins) {
14320                 /* Nullify if unused */
14321                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14322                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14323         }
14324
14325         g_free (live_range_start);
14326         g_free (live_range_end);
14327         g_free (live_range_start_bb);
14328         g_free (live_range_end_bb);
14329 }
14330
14331 /**
14332  * FIXME:
14333  * - use 'iadd' instead of 'int_add'
14334  * - handling ovf opcodes: decompose in method_to_ir.
14335  * - unify iregs/fregs
14336  *   -> partly done, the missing parts are:
14337  *   - a more complete unification would involve unifying the hregs as well, so
14338  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14339  *     would no longer map to the machine hregs, so the code generators would need to
14340  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14341  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14342  *     fp/non-fp branches speeds it up by about 15%.
14343  * - use sext/zext opcodes instead of shifts
14344  * - add OP_ICALL
14345  * - get rid of TEMPLOADs if possible and use vregs instead
14346  * - clean up usage of OP_P/OP_ opcodes
14347  * - cleanup usage of DUMMY_USE
14348  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14349  *   stack
14350  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14351  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14352  * - make sure handle_stack_args () is called before the branch is emitted
14353  * - when the new IR is done, get rid of all unused stuff
14354  * - COMPARE/BEQ as separate instructions or unify them ?
14355  *   - keeping them separate allows specialized compare instructions like
14356  *     compare_imm, compare_membase
14357  *   - most back ends unify fp compare+branch, fp compare+ceq
14358  * - integrate mono_save_args into inline_method
14359  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14360  * - handle long shift opts on 32 bit platforms somehow: they require
14361  *   3 sregs (2 for arg1 and 1 for arg2)
14362  * - make byref a 'normal' type.
14363  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14364  *   variable if needed.
14365  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14366  *   like inline_method.
14367  * - remove inlining restrictions
14368  * - fix LNEG and enable cfold of INEG
14369  * - generalize x86 optimizations like ldelema as a peephole optimization
14370  * - add store_mem_imm for amd64
14371  * - optimize the loading of the interruption flag in the managed->native wrappers
14372  * - avoid special handling of OP_NOP in passes
14373  * - move code inserting instructions into one function/macro.
14374  * - try a coalescing phase after liveness analysis
14375  * - add float -> vreg conversion + local optimizations on !x86
14376  * - figure out how to handle decomposed branches during optimizations, ie.
14377  *   compare+branch, op_jump_table+op_br etc.
14378  * - promote RuntimeXHandles to vregs
14379  * - vtype cleanups:
14380  *   - add a NEW_VARLOADA_VREG macro
14381  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14382  *   accessing vtype fields.
14383  * - get rid of I8CONST on 64 bit platforms
14384  * - dealing with the increase in code size due to branches created during opcode
14385  *   decomposition:
14386  *   - use extended basic blocks
14387  *     - all parts of the JIT
14388  *     - handle_global_vregs () && local regalloc
14389  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14390  * - sources of increase in code size:
14391  *   - vtypes
14392  *   - long compares
14393  *   - isinst and castclass
14394  *   - lvregs not allocated to global registers even if used multiple times
14395  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14396  *   meaningful.
14397  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14398  * - add all micro optimizations from the old JIT
14399  * - put tree optimizations into the deadce pass
14400  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14401  *   specific function.
14402  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14403  *   fcompare + branchCC.
14404  * - create a helper function for allocating a stack slot, taking into account
14405  *   MONO_CFG_HAS_SPILLUP.
14406  * - merge r68207.
14407  * - merge the ia64 switch changes.
14408  * - optimize mono_regstate2_alloc_int/float.
14409  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14410  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14411  *   parts of the tree could be separated by other instructions, killing the tree
14412  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14413  *   instructions if the result of the load is used multiple times ?
14414  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14415  * - LAST MERGE: 108395.
14416  * - when returning vtypes in registers, generate IR and append it to the end of the
14417  *   last bb instead of doing it in the epilog.
14418  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14419  */
14420
14421 /*
14422
14423 NOTES
14424 -----
14425
14426 - When to decompose opcodes:
14427   - earlier: this makes some optimizations hard to implement, since the low level IR
14428   no longer contains the neccessary information. But it is easier to do.
14429   - later: harder to implement, enables more optimizations.
14430 - Branches inside bblocks:
14431   - created when decomposing complex opcodes.
14432     - branches to another bblock: harmless, but not tracked by the branch
14433       optimizations, so need to branch to a label at the start of the bblock.
14434     - branches to inside the same bblock: very problematic, trips up the local
14435       reg allocator. Can be fixed by spitting the current bblock, but that is a
14436       complex operation, since some local vregs can become global vregs etc.
14437 - Local/global vregs:
14438   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14439     local register allocator.
14440   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14441     structure, created by mono_create_var (). Assigned to hregs or the stack by
14442     the global register allocator.
14443 - When to do optimizations like alu->alu_imm:
14444   - earlier -> saves work later on since the IR will be smaller/simpler
14445   - later -> can work on more instructions
14446 - Handling of valuetypes:
14447   - When a vtype is pushed on the stack, a new temporary is created, an
14448     instruction computing its address (LDADDR) is emitted and pushed on
14449     the stack. Need to optimize cases when the vtype is used immediately as in
14450     argument passing, stloc etc.
14451 - Instead of the to_end stuff in the old JIT, simply call the function handling
14452   the values on the stack before emitting the last instruction of the bb.
14453 */
14454
14455 #endif /* DISABLE_JIT */