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/mono-debug-debugger.h>
  53 #include <mono/metadata/gc-internals.h>
  54 #include <mono/metadata/security-manager.h>
  55 #include <mono/metadata/threads-types.h>
  56 #include <mono/metadata/security-core-clr.h>
  57 #include <mono/metadata/profiler-private.h>
  58 #include <mono/metadata/profiler.h>
  59 #include <mono/metadata/monitor.h>
  60 #include <mono/metadata/debug-mono-symfile.h>
  61 #include <mono/utils/mono-compiler.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/metadata/mono-basic-block.h>
  64 #include <mono/metadata/reflection-internals.h>
  65
  66 #include "trace.h"
  67
  68 #include "ir-emit.h"
  69
  70 #include "jit-icalls.h"
  71 #include "jit.h"
  72 #include "debugger-agent.h"
  73 #include "seq-points.h"
  74 #include "aot-compiler.h"
  75 #include "mini-llvm.h"
  76
  77 #define BRANCH_COST 10
  78 #define INLINE_LENGTH_LIMIT 20
  79
  80 /* These have 'cfg' as an implicit argument */
  81 #define INLINE_FAILURE(msg) do {                                                                        \
  82         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  83                 inline_failure (cfg, msg);                                                                              \
  84                 goto exception_exit;                                                                                    \
  85         } \
  86         } while (0)
  87 #define CHECK_CFG_EXCEPTION do {\
  88                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  89                         goto exception_exit;                                            \
  90         } while (0)
  91 #define METHOD_ACCESS_FAILURE(method, cmethod) do {                     \
  92                 method_access_failure ((cfg), (method), (cmethod));                     \
  93                 goto exception_exit;                                                                            \
  94         } while (0)
  95 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  96                 field_access_failure ((cfg), (method), (field));                        \
  97                 goto exception_exit;    \
  98         } while (0)
  99 #define GENERIC_SHARING_FAILURE(opcode) do {            \
 100                 if (cfg->gshared) {                                                                     \
 101                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 102                         goto exception_exit;    \
 103                 }                       \
 104         } while (0)
 105 #define GSHAREDVT_FAILURE(opcode) do {          \
 106         if (cfg->gsharedvt) {                                                                                           \
 107                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 108                 goto exception_exit;                                                                                    \
 109         }                                                                                                                                       \
 110         } while (0)
 111 #define OUT_OF_MEMORY_FAILURE do {      \
 112                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 113                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 114                 goto exception_exit;    \
 115         } while (0)
 116 #define DISABLE_AOT(cfg) do { \
 117                 if ((cfg)->verbose_level >= 2)                                            \
 118                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 119                 (cfg)->disable_aot = TRUE;                                                        \
 120         } while (0)
 121 #define LOAD_ERROR do { \
 122                 break_on_unverified ();                                                         \
 123                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 124                 goto exception_exit;                                                                    \
 125         } while (0)
 126
 127 #define TYPE_LOAD_ERROR(klass) do { \
 128                 cfg->exception_ptr = klass; \
 129                 LOAD_ERROR;                                     \
 130         } while (0)
 131
 132 #define CHECK_CFG_ERROR do {\
 133                 if (!mono_error_ok (&cfg->error)) { \
 134                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 135                         goto mono_error_exit; \
 136                 } \
 137         } while (0)
 138
 139 /* Determine whenever 'ins' represents a load of the 'this' argument */
 140 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 141
 142 static int ldind_to_load_membase (int opcode);
 143 static int stind_to_store_membase (int opcode);
 144
 145 int mono_op_to_op_imm (int opcode);
 146 int mono_op_to_op_imm_noemul (int opcode);
 147
 148 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 149
 150 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 151                                                   guchar *ip, guint real_offset, gboolean inline_always);
 152 static MonoInst*
 153 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 154
 155 /* helper methods signatures */
 156 static MonoMethodSignature *helper_sig_domain_get;
 157 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 158 static MonoMethodSignature *helper_sig_llvmonly_imt_thunk;
 159
 160
 161 /* type loading helpers */
 162 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, System.Runtime.CompilerServices, RuntimeHelpers)
 163 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, System.Diagnostics, DebuggableAttribute)
 164
 165 /*
 166  * Instruction metadata
 167  */
 168 #ifdef MINI_OP
 169 #undef MINI_OP
 170 #endif
 171 #ifdef MINI_OP3
 172 #undef MINI_OP3
 173 #endif
 174 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 175 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 176 #define NONE ' '
 177 #define IREG 'i'
 178 #define FREG 'f'
 179 #define VREG 'v'
 180 #define XREG 'x'
 181 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 182 #define LREG IREG
 183 #else
 184 #define LREG 'l'
 185 #endif
 186 /* keep in sync with the enum in mini.h */
 187 const char
 188 ins_info[] = {
 189 #include "mini-ops.h"
 190 };
 191 #undef MINI_OP
 192 #undef MINI_OP3
 193
 194 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 195 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 196 /*
 197  * This should contain the index of the last sreg + 1. This is not the same
 198  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 199  */
 200 const gint8 ins_sreg_counts[] = {
 201 #include "mini-ops.h"
 202 };
 203 #undef MINI_OP
 204 #undef MINI_OP3
 205
 206 #define MONO_INIT_VARINFO(vi,id) do { \
 207         (vi)->range.first_use.pos.bid = 0xffff; \
 208         (vi)->reg = -1; \
 209         (vi)->idx = (id); \
 210 } while (0)
 211
 212 guint32
 213 mono_alloc_ireg (MonoCompile *cfg)
 214 {
 215         return alloc_ireg (cfg);
 216 }
 217
 218 guint32
 219 mono_alloc_lreg (MonoCompile *cfg)
 220 {
 221         return alloc_lreg (cfg);
 222 }
 223
 224 guint32
 225 mono_alloc_freg (MonoCompile *cfg)
 226 {
 227         return alloc_freg (cfg);
 228 }
 229
 230 guint32
 231 mono_alloc_preg (MonoCompile *cfg)
 232 {
 233         return alloc_preg (cfg);
 234 }
 235
 236 guint32
 237 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 238 {
 239         return alloc_dreg (cfg, stack_type);
 240 }
 241
 242 /*
 243  * mono_alloc_ireg_ref:
 244  *
 245  *   Allocate an IREG, and mark it as holding a GC ref.
 246  */
 247 guint32
 248 mono_alloc_ireg_ref (MonoCompile *cfg)
 249 {
 250         return alloc_ireg_ref (cfg);
 251 }
 252
 253 /*
 254  * mono_alloc_ireg_mp:
 255  *
 256  *   Allocate an IREG, and mark it as holding a managed pointer.
 257  */
 258 guint32
 259 mono_alloc_ireg_mp (MonoCompile *cfg)
 260 {
 261         return alloc_ireg_mp (cfg);
 262 }
 263
 264 /*
 265  * mono_alloc_ireg_copy:
 266  *
 267  *   Allocate an IREG with the same GC type as VREG.
 268  */
 269 guint32
 270 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 271 {
 272         if (vreg_is_ref (cfg, vreg))
 273                 return alloc_ireg_ref (cfg);
 274         else if (vreg_is_mp (cfg, vreg))
 275                 return alloc_ireg_mp (cfg);
 276         else
 277                 return alloc_ireg (cfg);
 278 }
 279
 280 guint
 281 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 282 {
 283         if (type->byref)
 284                 return OP_MOVE;
 285
 286         type = mini_get_underlying_type (type);
 287 handle_enum:
 288         switch (type->type) {
 289         case MONO_TYPE_I1:
 290         case MONO_TYPE_U1:
 291                 return OP_MOVE;
 292         case MONO_TYPE_I2:
 293         case MONO_TYPE_U2:
 294                 return OP_MOVE;
 295         case MONO_TYPE_I4:
 296         case MONO_TYPE_U4:
 297                 return OP_MOVE;
 298         case MONO_TYPE_I:
 299         case MONO_TYPE_U:
 300         case MONO_TYPE_PTR:
 301         case MONO_TYPE_FNPTR:
 302                 return OP_MOVE;
 303         case MONO_TYPE_CLASS:
 304         case MONO_TYPE_STRING:
 305         case MONO_TYPE_OBJECT:
 306         case MONO_TYPE_SZARRAY:
 307         case MONO_TYPE_ARRAY:
 308                 return OP_MOVE;
 309         case MONO_TYPE_I8:
 310         case MONO_TYPE_U8:
 311 #if SIZEOF_REGISTER == 8
 312                 return OP_MOVE;
 313 #else
 314                 return OP_LMOVE;
 315 #endif
 316         case MONO_TYPE_R4:
 317                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 318         case MONO_TYPE_R8:
 319                 return OP_FMOVE;
 320         case MONO_TYPE_VALUETYPE:
 321                 if (type->data.klass->enumtype) {
 322                         type = mono_class_enum_basetype (type->data.klass);
 323                         goto handle_enum;
 324                 }
 325                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 326                         return OP_XMOVE;
 327                 return OP_VMOVE;
 328         case MONO_TYPE_TYPEDBYREF:
 329                 return OP_VMOVE;
 330         case MONO_TYPE_GENERICINST:
 331                 type = &type->data.generic_class->container_class->byval_arg;
 332                 goto handle_enum;
 333         case MONO_TYPE_VAR:
 334         case MONO_TYPE_MVAR:
 335                 g_assert (cfg->gshared);
 336                 if (mini_type_var_is_vt (type))
 337                         return OP_VMOVE;
 338                 else
 339                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 340         default:
 341                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 342         }
 343         return -1;
 344 }
 345
 346 void
 347 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 348 {
 349         int i;
 350         MonoInst *tree;
 351
 352         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 353         for (i = 0; i < bb->in_count; ++i)
 354                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 355         printf (", OUT: ");
 356         for (i = 0; i < bb->out_count; ++i)
 357                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 358         printf (" ]\n");
 359         for (tree = bb->code; tree; tree = tree->next)
 360                 mono_print_ins_index (-1, tree);
 361 }
 362
 363 void
 364 mono_create_helper_signatures (void)
 365 {
 366         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 367         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 368         helper_sig_llvmonly_imt_thunk = mono_create_icall_signature ("ptr ptr 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_MONO_ERROR);
 384         mono_error_set_generic_error (&cfg->error, "System", "MethodAccessException", "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_MONO_ERROR);
 395         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "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), (MonoStackType)(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), (MonoStackType)(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 = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 541                 GET_BBLOCK (cfg, tblock, target);               \
 542                 link_bblock (cfg, cfg->cbb, tblock);    \
 543                 ins->inst_true_bb = tblock;     \
 544                 if ((next_block)) {     \
 545                         link_bblock (cfg, cfg->cbb, (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, cfg->cbb, 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 (cfg->cbb, cmp); \
 559                 MONO_ADD_INS (cfg->cbb, 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 = (MonoBasicBlock **)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 = (MonoBasicBlock **)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         for (i = 0; i < header->num_clauses; ++i) {
 667                 clause = &header->clauses [i];
 668
 669                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 670                         return ((i + 1) << 8) | clause->flags;
 671         }
 672
 673         return -1;
 674 }
 675
 676 static GList*
 677 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 678 {
 679         MonoMethodHeader *header = cfg->header;
 680         MonoExceptionClause *clause;
 681         int i;
 682         GList *res = NULL;
 683
 684         for (i = 0; i < header->num_clauses; ++i) {
 685                 clause = &header->clauses [i];
 686                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 687                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 688                         if (clause->flags == type)
 689                                 res = g_list_append (res, clause);
 690                 }
 691         }
 692         return res;
 693 }
 694
 695 static void
 696 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 697 {
 698         MonoInst *var;
 699
 700         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 701         if (var)
 702                 return;
 703
 704         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 705         /* prevent it from being register allocated */
 706         var->flags |= MONO_INST_VOLATILE;
 707
 708         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 709 }
 710
 711 MonoInst *
 712 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 713 {
 714         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 715 }
 716
 717 static MonoInst*
 718 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 719 {
 720         MonoInst *var;
 721
 722         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 723         if (var)
 724                 return var;
 725
 726         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 727         /* prevent it from being register allocated */
 728         var->flags |= MONO_INST_VOLATILE;
 729
 730         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 731
 732         return var;
 733 }
 734
 735 /*
 736  * Returns the type used in the eval stack when @type is loaded.
 737  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 738  */
 739 void
 740 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 741 {
 742         MonoClass *klass;
 743
 744         type = mini_get_underlying_type (type);
 745         inst->klass = klass = mono_class_from_mono_type (type);
 746         if (type->byref) {
 747                 inst->type = STACK_MP;
 748                 return;
 749         }
 750
 751 handle_enum:
 752         switch (type->type) {
 753         case MONO_TYPE_VOID:
 754                 inst->type = STACK_INV;
 755                 return;
 756         case MONO_TYPE_I1:
 757         case MONO_TYPE_U1:
 758         case MONO_TYPE_I2:
 759         case MONO_TYPE_U2:
 760         case MONO_TYPE_I4:
 761         case MONO_TYPE_U4:
 762                 inst->type = STACK_I4;
 763                 return;
 764         case MONO_TYPE_I:
 765         case MONO_TYPE_U:
 766         case MONO_TYPE_PTR:
 767         case MONO_TYPE_FNPTR:
 768                 inst->type = STACK_PTR;
 769                 return;
 770         case MONO_TYPE_CLASS:
 771         case MONO_TYPE_STRING:
 772         case MONO_TYPE_OBJECT:
 773         case MONO_TYPE_SZARRAY:
 774         case MONO_TYPE_ARRAY:
 775                 inst->type = STACK_OBJ;
 776                 return;
 777         case MONO_TYPE_I8:
 778         case MONO_TYPE_U8:
 779                 inst->type = STACK_I8;
 780                 return;
 781         case MONO_TYPE_R4:
 782                 inst->type = cfg->r4_stack_type;
 783                 break;
 784         case MONO_TYPE_R8:
 785                 inst->type = STACK_R8;
 786                 return;
 787         case MONO_TYPE_VALUETYPE:
 788                 if (type->data.klass->enumtype) {
 789                         type = mono_class_enum_basetype (type->data.klass);
 790                         goto handle_enum;
 791                 } else {
 792                         inst->klass = klass;
 793                         inst->type = STACK_VTYPE;
 794                         return;
 795                 }
 796         case MONO_TYPE_TYPEDBYREF:
 797                 inst->klass = mono_defaults.typed_reference_class;
 798                 inst->type = STACK_VTYPE;
 799                 return;
 800         case MONO_TYPE_GENERICINST:
 801                 type = &type->data.generic_class->container_class->byval_arg;
 802                 goto handle_enum;
 803         case MONO_TYPE_VAR:
 804         case MONO_TYPE_MVAR:
 805                 g_assert (cfg->gshared);
 806                 if (mini_is_gsharedvt_type (type)) {
 807                         g_assert (cfg->gsharedvt);
 808                         inst->type = STACK_VTYPE;
 809                 } else {
 810                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 811                 }
 812                 return;
 813         default:
 814                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 815         }
 816 }
 817
 818 /*
 819  * The following tables are used to quickly validate the IL code in type_from_op ().
 820  */
 821 static const char
 822 bin_num_table [STACK_MAX] [STACK_MAX] = {
 823         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 824         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 825         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 826         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 827         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 828         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, 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_INV, STACK_INV, STACK_INV, STACK_INV},
 831         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 832 };
 833
 834 static const char
 835 neg_table [] = {
 836         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 837 };
 838
 839 /* reduce the size of this table */
 840 static const char
 841 bin_int_table [STACK_MAX] [STACK_MAX] = {
 842         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 843         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 844         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 845         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, 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         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 850 };
 851
 852 static const char
 853 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 854 /*      Inv i  L  p  F  &  O  vt r4 */
 855         {0},
 856         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 857         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 858         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 859         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 860         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 861         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 862         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 863         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 864 };
 865
 866 /* reduce the size of this table */
 867 static const char
 868 shift_table [STACK_MAX] [STACK_MAX] = {
 869         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 870         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 871         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 872         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, 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         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 877 };
 878
 879 /*
 880  * Tables to map from the non-specific opcode to the matching
 881  * type-specific opcode.
 882  */
 883 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 884 static const guint16
 885 binops_op_map [STACK_MAX] = {
 886         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
 887 };
 888
 889 /* handles from CEE_NEG to CEE_CONV_U8 */
 890 static const guint16
 891 unops_op_map [STACK_MAX] = {
 892         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
 893 };
 894
 895 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 896 static const guint16
 897 ovfops_op_map [STACK_MAX] = {
 898         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
 899 };
 900
 901 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 902 static const guint16
 903 ovf2ops_op_map [STACK_MAX] = {
 904         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
 905 };
 906
 907 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 908 static const guint16
 909 ovf3ops_op_map [STACK_MAX] = {
 910         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
 911 };
 912
 913 /* handles from CEE_BEQ to CEE_BLT_UN */
 914 static const guint16
 915 beqops_op_map [STACK_MAX] = {
 916         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
 917 };
 918
 919 /* handles from CEE_CEQ to CEE_CLT_UN */
 920 static const guint16
 921 ceqops_op_map [STACK_MAX] = {
 922         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
 923 };
 924
 925 /*
 926  * Sets ins->type (the type on the eval stack) according to the
 927  * type of the opcode and the arguments to it.
 928  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 929  *
 930  * FIXME: this function sets ins->type unconditionally in some cases, but
 931  * it should set it to invalid for some types (a conv.x on an object)
 932  */
 933 static void
 934 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 935 {
 936         switch (ins->opcode) {
 937         /* binops */
 938         case CEE_ADD:
 939         case CEE_SUB:
 940         case CEE_MUL:
 941         case CEE_DIV:
 942         case CEE_REM:
 943                 /* FIXME: check unverifiable args for STACK_MP */
 944                 ins->type = bin_num_table [src1->type] [src2->type];
 945                 ins->opcode += binops_op_map [ins->type];
 946                 break;
 947         case CEE_DIV_UN:
 948         case CEE_REM_UN:
 949         case CEE_AND:
 950         case CEE_OR:
 951         case CEE_XOR:
 952                 ins->type = bin_int_table [src1->type] [src2->type];
 953                 ins->opcode += binops_op_map [ins->type];
 954                 break;
 955         case CEE_SHL:
 956         case CEE_SHR:
 957         case CEE_SHR_UN:
 958                 ins->type = shift_table [src1->type] [src2->type];
 959                 ins->opcode += binops_op_map [ins->type];
 960                 break;
 961         case OP_COMPARE:
 962         case OP_LCOMPARE:
 963         case OP_ICOMPARE:
 964                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 965                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 966                         ins->opcode = OP_LCOMPARE;
 967                 else if (src1->type == STACK_R4)
 968                         ins->opcode = OP_RCOMPARE;
 969                 else if (src1->type == STACK_R8)
 970                         ins->opcode = OP_FCOMPARE;
 971                 else
 972                         ins->opcode = OP_ICOMPARE;
 973                 break;
 974         case OP_ICOMPARE_IMM:
 975                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 976                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 977                         ins->opcode = OP_LCOMPARE_IMM;
 978                 break;
 979         case CEE_BEQ:
 980         case CEE_BGE:
 981         case CEE_BGT:
 982         case CEE_BLE:
 983         case CEE_BLT:
 984         case CEE_BNE_UN:
 985         case CEE_BGE_UN:
 986         case CEE_BGT_UN:
 987         case CEE_BLE_UN:
 988         case CEE_BLT_UN:
 989                 ins->opcode += beqops_op_map [src1->type];
 990                 break;
 991         case OP_CEQ:
 992                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 993                 ins->opcode += ceqops_op_map [src1->type];
 994                 break;
 995         case OP_CGT:
 996         case OP_CGT_UN:
 997         case OP_CLT:
 998         case OP_CLT_UN:
 999                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1000                 ins->opcode += ceqops_op_map [src1->type];
1001                 break;
1002         /* unops */
1003         case CEE_NEG:
1004                 ins->type = neg_table [src1->type];
1005                 ins->opcode += unops_op_map [ins->type];
1006                 break;
1007         case CEE_NOT:
1008                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1009                         ins->type = src1->type;
1010                 else
1011                         ins->type = STACK_INV;
1012                 ins->opcode += unops_op_map [ins->type];
1013                 break;
1014         case CEE_CONV_I1:
1015         case CEE_CONV_I2:
1016         case CEE_CONV_I4:
1017         case CEE_CONV_U4:
1018                 ins->type = STACK_I4;
1019                 ins->opcode += unops_op_map [src1->type];
1020                 break;
1021         case CEE_CONV_R_UN:
1022                 ins->type = STACK_R8;
1023                 switch (src1->type) {
1024                 case STACK_I4:
1025                 case STACK_PTR:
1026                         ins->opcode = OP_ICONV_TO_R_UN;
1027                         break;
1028                 case STACK_I8:
1029                         ins->opcode = OP_LCONV_TO_R_UN;
1030                         break;
1031                 }
1032                 break;
1033         case CEE_CONV_OVF_I1:
1034         case CEE_CONV_OVF_U1:
1035         case CEE_CONV_OVF_I2:
1036         case CEE_CONV_OVF_U2:
1037         case CEE_CONV_OVF_I4:
1038         case CEE_CONV_OVF_U4:
1039                 ins->type = STACK_I4;
1040                 ins->opcode += ovf3ops_op_map [src1->type];
1041                 break;
1042         case CEE_CONV_OVF_I_UN:
1043         case CEE_CONV_OVF_U_UN:
1044                 ins->type = STACK_PTR;
1045                 ins->opcode += ovf2ops_op_map [src1->type];
1046                 break;
1047         case CEE_CONV_OVF_I1_UN:
1048         case CEE_CONV_OVF_I2_UN:
1049         case CEE_CONV_OVF_I4_UN:
1050         case CEE_CONV_OVF_U1_UN:
1051         case CEE_CONV_OVF_U2_UN:
1052         case CEE_CONV_OVF_U4_UN:
1053                 ins->type = STACK_I4;
1054                 ins->opcode += ovf2ops_op_map [src1->type];
1055                 break;
1056         case CEE_CONV_U:
1057                 ins->type = STACK_PTR;
1058                 switch (src1->type) {
1059                 case STACK_I4:
1060                         ins->opcode = OP_ICONV_TO_U;
1061                         break;
1062                 case STACK_PTR:
1063                 case STACK_MP:
1064 #if SIZEOF_VOID_P == 8
1065                         ins->opcode = OP_LCONV_TO_U;
1066 #else
1067                         ins->opcode = OP_MOVE;
1068 #endif
1069                         break;
1070                 case STACK_I8:
1071                         ins->opcode = OP_LCONV_TO_U;
1072                         break;
1073                 case STACK_R8:
1074                         ins->opcode = OP_FCONV_TO_U;
1075                         break;
1076                 }
1077                 break;
1078         case CEE_CONV_I8:
1079         case CEE_CONV_U8:
1080                 ins->type = STACK_I8;
1081                 ins->opcode += unops_op_map [src1->type];
1082                 break;
1083         case CEE_CONV_OVF_I8:
1084         case CEE_CONV_OVF_U8:
1085                 ins->type = STACK_I8;
1086                 ins->opcode += ovf3ops_op_map [src1->type];
1087                 break;
1088         case CEE_CONV_OVF_U8_UN:
1089         case CEE_CONV_OVF_I8_UN:
1090                 ins->type = STACK_I8;
1091                 ins->opcode += ovf2ops_op_map [src1->type];
1092                 break;
1093         case CEE_CONV_R4:
1094                 ins->type = cfg->r4_stack_type;
1095                 ins->opcode += unops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_R8:
1098                 ins->type = STACK_R8;
1099                 ins->opcode += unops_op_map [src1->type];
1100                 break;
1101         case OP_CKFINITE:
1102                 ins->type = STACK_R8;
1103                 break;
1104         case CEE_CONV_U2:
1105         case CEE_CONV_U1:
1106                 ins->type = STACK_I4;
1107                 ins->opcode += ovfops_op_map [src1->type];
1108                 break;
1109         case CEE_CONV_I:
1110         case CEE_CONV_OVF_I:
1111         case CEE_CONV_OVF_U:
1112                 ins->type = STACK_PTR;
1113                 ins->opcode += ovfops_op_map [src1->type];
1114                 break;
1115         case CEE_ADD_OVF:
1116         case CEE_ADD_OVF_UN:
1117         case CEE_MUL_OVF:
1118         case CEE_MUL_OVF_UN:
1119         case CEE_SUB_OVF:
1120         case CEE_SUB_OVF_UN:
1121                 ins->type = bin_num_table [src1->type] [src2->type];
1122                 ins->opcode += ovfops_op_map [src1->type];
1123                 if (ins->type == STACK_R8)
1124                         ins->type = STACK_INV;
1125                 break;
1126         case OP_LOAD_MEMBASE:
1127                 ins->type = STACK_PTR;
1128                 break;
1129         case OP_LOADI1_MEMBASE:
1130         case OP_LOADU1_MEMBASE:
1131         case OP_LOADI2_MEMBASE:
1132         case OP_LOADU2_MEMBASE:
1133         case OP_LOADI4_MEMBASE:
1134         case OP_LOADU4_MEMBASE:
1135                 ins->type = STACK_PTR;
1136                 break;
1137         case OP_LOADI8_MEMBASE:
1138                 ins->type = STACK_I8;
1139                 break;
1140         case OP_LOADR4_MEMBASE:
1141                 ins->type = cfg->r4_stack_type;
1142                 break;
1143         case OP_LOADR8_MEMBASE:
1144                 ins->type = STACK_R8;
1145                 break;
1146         default:
1147                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1148                 break;
1149         }
1150
1151         if (ins->type == STACK_MP)
1152                 ins->klass = mono_defaults.object_class;
1153 }
1154
1155 static const char
1156 ldind_type [] = {
1157         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1158 };
1159
1160 #if 0
1161
1162 static const char
1163 param_table [STACK_MAX] [STACK_MAX] = {
1164         {0},
1165 };
1166
1167 static int
1168 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1169 {
1170         int i;
1171
1172         if (sig->hasthis) {
1173                 switch (args->type) {
1174                 case STACK_I4:
1175                 case STACK_I8:
1176                 case STACK_R8:
1177                 case STACK_VTYPE:
1178                 case STACK_INV:
1179                         return 0;
1180                 }
1181                 args++;
1182         }
1183         for (i = 0; i < sig->param_count; ++i) {
1184                 switch (args [i].type) {
1185                 case STACK_INV:
1186                         return 0;
1187                 case STACK_MP:
1188                         if (!sig->params [i]->byref)
1189                                 return 0;
1190                         continue;
1191                 case STACK_OBJ:
1192                         if (sig->params [i]->byref)
1193                                 return 0;
1194                         switch (sig->params [i]->type) {
1195                         case MONO_TYPE_CLASS:
1196                         case MONO_TYPE_STRING:
1197                         case MONO_TYPE_OBJECT:
1198                         case MONO_TYPE_SZARRAY:
1199                         case MONO_TYPE_ARRAY:
1200                                 break;
1201                         default:
1202                                 return 0;
1203                         }
1204                         continue;
1205                 case STACK_R8:
1206                         if (sig->params [i]->byref)
1207                                 return 0;
1208                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1209                                 return 0;
1210                         continue;
1211                 case STACK_PTR:
1212                 case STACK_I4:
1213                 case STACK_I8:
1214                 case STACK_VTYPE:
1215                         break;
1216                 }
1217                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1218                         return 0;*/
1219         }
1220         return 1;
1221 }
1222 #endif
1223
1224 /*
1225  * When we need a pointer to the current domain many times in a method, we
1226  * call mono_domain_get() once and we store the result in a local variable.
1227  * This function returns the variable that represents the MonoDomain*.
1228  */
1229 inline static MonoInst *
1230 mono_get_domainvar (MonoCompile *cfg)
1231 {
1232         if (!cfg->domainvar)
1233                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1234         return cfg->domainvar;
1235 }
1236
1237 /*
1238  * The got_var contains the address of the Global Offset Table when AOT
1239  * compiling.
1240  */
1241 MonoInst *
1242 mono_get_got_var (MonoCompile *cfg)
1243 {
1244         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1245                 return NULL;
1246         if (!cfg->got_var) {
1247                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1248         }
1249         return cfg->got_var;
1250 }
1251
1252 static MonoInst *
1253 mono_get_vtable_var (MonoCompile *cfg)
1254 {
1255         g_assert (cfg->gshared);
1256
1257         if (!cfg->rgctx_var) {
1258                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1259                 /* force the var to be stack allocated */
1260                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1261         }
1262
1263         return cfg->rgctx_var;
1264 }
1265
1266 static MonoType*
1267 type_from_stack_type (MonoInst *ins) {
1268         switch (ins->type) {
1269         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1270         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1271         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1272         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1273         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1274         case STACK_MP:
1275                 return &ins->klass->this_arg;
1276         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1277         case STACK_VTYPE: return &ins->klass->byval_arg;
1278         default:
1279                 g_error ("stack type %d to monotype not handled\n", ins->type);
1280         }
1281         return NULL;
1282 }
1283
1284 static G_GNUC_UNUSED int
1285 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1286 {
1287         t = mono_type_get_underlying_type (t);
1288         switch (t->type) {
1289         case MONO_TYPE_I1:
1290         case MONO_TYPE_U1:
1291         case MONO_TYPE_I2:
1292         case MONO_TYPE_U2:
1293         case MONO_TYPE_I4:
1294         case MONO_TYPE_U4:
1295                 return STACK_I4;
1296         case MONO_TYPE_I:
1297         case MONO_TYPE_U:
1298         case MONO_TYPE_PTR:
1299         case MONO_TYPE_FNPTR:
1300                 return STACK_PTR;
1301         case MONO_TYPE_CLASS:
1302         case MONO_TYPE_STRING:
1303         case MONO_TYPE_OBJECT:
1304         case MONO_TYPE_SZARRAY:
1305         case MONO_TYPE_ARRAY:
1306                 return STACK_OBJ;
1307         case MONO_TYPE_I8:
1308         case MONO_TYPE_U8:
1309                 return STACK_I8;
1310         case MONO_TYPE_R4:
1311                 return cfg->r4_stack_type;
1312         case MONO_TYPE_R8:
1313                 return STACK_R8;
1314         case MONO_TYPE_VALUETYPE:
1315         case MONO_TYPE_TYPEDBYREF:
1316                 return STACK_VTYPE;
1317         case MONO_TYPE_GENERICINST:
1318                 if (mono_type_generic_inst_is_valuetype (t))
1319                         return STACK_VTYPE;
1320                 else
1321                         return STACK_OBJ;
1322                 break;
1323         default:
1324                 g_assert_not_reached ();
1325         }
1326
1327         return -1;
1328 }
1329
1330 static MonoClass*
1331 array_access_to_klass (int opcode)
1332 {
1333         switch (opcode) {
1334         case CEE_LDELEM_U1:
1335                 return mono_defaults.byte_class;
1336         case CEE_LDELEM_U2:
1337                 return mono_defaults.uint16_class;
1338         case CEE_LDELEM_I:
1339         case CEE_STELEM_I:
1340                 return mono_defaults.int_class;
1341         case CEE_LDELEM_I1:
1342         case CEE_STELEM_I1:
1343                 return mono_defaults.sbyte_class;
1344         case CEE_LDELEM_I2:
1345         case CEE_STELEM_I2:
1346                 return mono_defaults.int16_class;
1347         case CEE_LDELEM_I4:
1348         case CEE_STELEM_I4:
1349                 return mono_defaults.int32_class;
1350         case CEE_LDELEM_U4:
1351                 return mono_defaults.uint32_class;
1352         case CEE_LDELEM_I8:
1353         case CEE_STELEM_I8:
1354                 return mono_defaults.int64_class;
1355         case CEE_LDELEM_R4:
1356         case CEE_STELEM_R4:
1357                 return mono_defaults.single_class;
1358         case CEE_LDELEM_R8:
1359         case CEE_STELEM_R8:
1360                 return mono_defaults.double_class;
1361         case CEE_LDELEM_REF:
1362         case CEE_STELEM_REF:
1363                 return mono_defaults.object_class;
1364         default:
1365                 g_assert_not_reached ();
1366         }
1367         return NULL;
1368 }
1369
1370 /*
1371  * We try to share variables when possible
1372  */
1373 static MonoInst *
1374 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1375 {
1376         MonoInst *res;
1377         int pos, vnum;
1378
1379         /* inlining can result in deeper stacks */
1380         if (slot >= cfg->header->max_stack)
1381                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1382
1383         pos = ins->type - 1 + slot * STACK_MAX;
1384
1385         switch (ins->type) {
1386         case STACK_I4:
1387         case STACK_I8:
1388         case STACK_R8:
1389         case STACK_PTR:
1390         case STACK_MP:
1391         case STACK_OBJ:
1392                 if ((vnum = cfg->intvars [pos]))
1393                         return cfg->varinfo [vnum];
1394                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1395                 cfg->intvars [pos] = res->inst_c0;
1396                 break;
1397         default:
1398                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1399         }
1400         return res;
1401 }
1402
1403 static void
1404 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1405 {
1406         /*
1407          * Don't use this if a generic_context is set, since that means AOT can't
1408          * look up the method using just the image+token.
1409          * table == 0 means this is a reference made from a wrapper.
1410          */
1411         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1412                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1413                 jump_info_token->image = image;
1414                 jump_info_token->token = token;
1415                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1416         }
1417 }
1418
1419 /*
1420  * This function is called to handle items that are left on the evaluation stack
1421  * at basic block boundaries. What happens is that we save the values to local variables
1422  * and we reload them later when first entering the target basic block (with the
1423  * handle_loaded_temps () function).
1424  * A single joint point will use the same variables (stored in the array bb->out_stack or
1425  * bb->in_stack, if the basic block is before or after the joint point).
1426  *
1427  * This function needs to be called _before_ emitting the last instruction of
1428  * the bb (i.e. before emitting a branch).
1429  * If the stack merge fails at a join point, cfg->unverifiable is set.
1430  */
1431 static void
1432 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1433 {
1434         int i, bindex;
1435         MonoBasicBlock *bb = cfg->cbb;
1436         MonoBasicBlock *outb;
1437         MonoInst *inst, **locals;
1438         gboolean found;
1439
1440         if (!count)
1441                 return;
1442         if (cfg->verbose_level > 3)
1443                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1444         if (!bb->out_scount) {
1445                 bb->out_scount = count;
1446                 //printf ("bblock %d has out:", bb->block_num);
1447                 found = FALSE;
1448                 for (i = 0; i < bb->out_count; ++i) {
1449                         outb = bb->out_bb [i];
1450                         /* exception handlers are linked, but they should not be considered for stack args */
1451                         if (outb->flags & BB_EXCEPTION_HANDLER)
1452                                 continue;
1453                         //printf (" %d", outb->block_num);
1454                         if (outb->in_stack) {
1455                                 found = TRUE;
1456                                 bb->out_stack = outb->in_stack;
1457                                 break;
1458                         }
1459                 }
1460                 //printf ("\n");
1461                 if (!found) {
1462                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1463                         for (i = 0; i < count; ++i) {
1464                                 /*
1465                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1466                                  * stack slot and if they are of the same type.
1467                                  * This won't cause conflicts since if 'local' is used to
1468                                  * store one of the values in the in_stack of a bblock, then
1469                                  * the same variable will be used for the same outgoing stack
1470                                  * slot as well.
1471                                  * This doesn't work when inlining methods, since the bblocks
1472                                  * in the inlined methods do not inherit their in_stack from
1473                                  * the bblock they are inlined to. See bug #58863 for an
1474                                  * example.
1475                                  */
1476                                 if (cfg->inlined_method)
1477                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1478                                 else
1479                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1480                         }
1481                 }
1482         }
1483
1484         for (i = 0; i < bb->out_count; ++i) {
1485                 outb = bb->out_bb [i];
1486                 /* exception handlers are linked, but they should not be considered for stack args */
1487                 if (outb->flags & BB_EXCEPTION_HANDLER)
1488                         continue;
1489                 if (outb->in_scount) {
1490                         if (outb->in_scount != bb->out_scount) {
1491                                 cfg->unverifiable = TRUE;
1492                                 return;
1493                         }
1494                         continue; /* check they are the same locals */
1495                 }
1496                 outb->in_scount = count;
1497                 outb->in_stack = bb->out_stack;
1498         }
1499
1500         locals = bb->out_stack;
1501         cfg->cbb = bb;
1502         for (i = 0; i < count; ++i) {
1503                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1504                 inst->cil_code = sp [i]->cil_code;
1505                 sp [i] = locals [i];
1506                 if (cfg->verbose_level > 3)
1507                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1508         }
1509
1510         /*
1511          * It is possible that the out bblocks already have in_stack assigned, and
1512          * the in_stacks differ. In this case, we will store to all the different
1513          * in_stacks.
1514          */
1515
1516         found = TRUE;
1517         bindex = 0;
1518         while (found) {
1519                 /* Find a bblock which has a different in_stack */
1520                 found = FALSE;
1521                 while (bindex < bb->out_count) {
1522                         outb = bb->out_bb [bindex];
1523                         /* exception handlers are linked, but they should not be considered for stack args */
1524                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1525                                 bindex++;
1526                                 continue;
1527                         }
1528                         if (outb->in_stack != locals) {
1529                                 for (i = 0; i < count; ++i) {
1530                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1531                                         inst->cil_code = sp [i]->cil_code;
1532                                         sp [i] = locals [i];
1533                                         if (cfg->verbose_level > 3)
1534                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1535                                 }
1536                                 locals = outb->in_stack;
1537                                 found = TRUE;
1538                                 break;
1539                         }
1540                         bindex ++;
1541                 }
1542         }
1543 }
1544
1545 static MonoInst*
1546 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1547 {
1548         MonoInst *ins;
1549
1550         if (cfg->compile_aot) {
1551                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1552         } else {
1553                 MonoJumpInfo ji;
1554                 gpointer target;
1555                 MonoError error;
1556
1557                 ji.type = patch_type;
1558                 ji.data.target = data;
1559                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1560                 mono_error_assert_ok (&error);
1561
1562                 EMIT_NEW_PCONST (cfg, ins, target);
1563         }
1564         return ins;
1565 }
1566
1567 static void
1568 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1569 {
1570         int ibitmap_reg = alloc_preg (cfg);
1571 #ifdef COMPRESSED_INTERFACE_BITMAP
1572         MonoInst *args [2];
1573         MonoInst *res, *ins;
1574         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1575         MONO_ADD_INS (cfg->cbb, ins);
1576         args [0] = ins;
1577         args [1] = emit_runtime_constant (cfg, MONO_PATCH_INFO_IID, klass);
1578         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1579         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1580 #else
1581         int ibitmap_byte_reg = alloc_preg (cfg);
1582
1583         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1584
1585         if (cfg->compile_aot) {
1586                 int iid_reg = alloc_preg (cfg);
1587                 int shifted_iid_reg = alloc_preg (cfg);
1588                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1589                 int masked_iid_reg = alloc_preg (cfg);
1590                 int iid_one_bit_reg = alloc_preg (cfg);
1591                 int iid_bit_reg = alloc_preg (cfg);
1592                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1593                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1594                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1595                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1596                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1597                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1598                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1599                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1600         } else {
1601                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1602                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1603         }
1604 #endif
1605 }
1606
1607 /*
1608  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1609  * stored in "klass_reg" implements the interface "klass".
1610  */
1611 static void
1612 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1613 {
1614         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1615 }
1616
1617 /*
1618  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1619  * stored in "vtable_reg" implements the interface "klass".
1620  */
1621 static void
1622 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1623 {
1624         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1625 }
1626
1627 /*
1628  * Emit code which checks whenever the interface id of @klass is smaller than
1629  * than the value given by max_iid_reg.
1630 */
1631 static void
1632 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1633                                                  MonoBasicBlock *false_target)
1634 {
1635         if (cfg->compile_aot) {
1636                 int iid_reg = alloc_preg (cfg);
1637                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1638                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1639         }
1640         else
1641                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1642         if (false_target)
1643                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1644         else
1645                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1646 }
1647
1648 /* Same as above, but obtains max_iid from a vtable */
1649 static void
1650 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1651                                                                  MonoBasicBlock *false_target)
1652 {
1653         int max_iid_reg = alloc_preg (cfg);
1654
1655         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1656         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1657 }
1658
1659 /* Same as above, but obtains max_iid from a klass */
1660 static void
1661 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1662                                                                  MonoBasicBlock *false_target)
1663 {
1664         int max_iid_reg = alloc_preg (cfg);
1665
1666         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1667         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1668 }
1669
1670 static void
1671 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1672 {
1673         int idepth_reg = alloc_preg (cfg);
1674         int stypes_reg = alloc_preg (cfg);
1675         int stype = alloc_preg (cfg);
1676
1677         mono_class_setup_supertypes (klass);
1678
1679         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1680                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1681                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1682                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1683         }
1684         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1685         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1686         if (klass_ins) {
1687                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1688         } else if (cfg->compile_aot) {
1689                 int const_reg = alloc_preg (cfg);
1690                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1691                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1692         } else {
1693                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1694         }
1695         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1696 }
1697
1698 static void
1699 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1700 {
1701         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1702 }
1703
1704 static void
1705 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1706 {
1707         int intf_reg = alloc_preg (cfg);
1708
1709         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1710         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1711         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1712         if (true_target)
1713                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1714         else
1715                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1716 }
1717
1718 /*
1719  * Variant of the above that takes a register to the class, not the vtable.
1720  */
1721 static void
1722 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1723 {
1724         int intf_bit_reg = alloc_preg (cfg);
1725
1726         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1727         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1728         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1729         if (true_target)
1730                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1731         else
1732                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1733 }
1734
1735 static inline void
1736 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1737 {
1738         if (klass_inst) {
1739                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1740         } else {
1741                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
1742                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, ins->dreg);
1743         }
1744         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1745 }
1746
1747 static inline void
1748 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1749 {
1750         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1751 }
1752
1753 static inline void
1754 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1755 {
1756         if (cfg->compile_aot) {
1757                 int const_reg = alloc_preg (cfg);
1758                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1759                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1760         } else {
1761                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1762         }
1763         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1764 }
1765
1766 static void
1767 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1768
1769 static void
1770 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1771 {
1772         if (klass->rank) {
1773                 int rank_reg = alloc_preg (cfg);
1774                 int eclass_reg = alloc_preg (cfg);
1775
1776                 g_assert (!klass_inst);
1777                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1778                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1779                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1780                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1781                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1782                 if (klass->cast_class == mono_defaults.object_class) {
1783                         int parent_reg = alloc_preg (cfg);
1784                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1785                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1786                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1787                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1788                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1789                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1790                 } else if (klass->cast_class == mono_defaults.enum_class) {
1791                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1792                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1793                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1794                 } else {
1795                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1796                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1797                 }
1798
1799                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1800                         /* Check that the object is a vector too */
1801                         int bounds_reg = alloc_preg (cfg);
1802                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1803                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1804                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1805                 }
1806         } else {
1807                 int idepth_reg = alloc_preg (cfg);
1808                 int stypes_reg = alloc_preg (cfg);
1809                 int stype = alloc_preg (cfg);
1810
1811                 mono_class_setup_supertypes (klass);
1812
1813                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1814                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1815                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1816                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1817                 }
1818                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1819                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1820                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1821         }
1822 }
1823
1824 static void
1825 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1826 {
1827         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1828 }
1829
1830 static void
1831 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1832 {
1833         int val_reg;
1834
1835         g_assert (val == 0);
1836
1837         if (align == 0)
1838                 align = 4;
1839
1840         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1841                 switch (size) {
1842                 case 1:
1843                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1844                         return;
1845                 case 2:
1846                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1847                         return;
1848                 case 4:
1849                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1850                         return;
1851 #if SIZEOF_REGISTER == 8
1852                 case 8:
1853                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1854                         return;
1855 #endif
1856                 }
1857         }
1858
1859         val_reg = alloc_preg (cfg);
1860
1861         if (SIZEOF_REGISTER == 8)
1862                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1863         else
1864                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1865
1866         if (align < 4) {
1867                 /* This could be optimized further if neccesary */
1868                 while (size >= 1) {
1869                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1870                         offset += 1;
1871                         size -= 1;
1872                 }
1873                 return;
1874         }
1875
1876         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1877                 if (offset % 8) {
1878                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1879                         offset += 4;
1880                         size -= 4;
1881                 }
1882                 while (size >= 8) {
1883                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1884                         offset += 8;
1885                         size -= 8;
1886                 }
1887         }
1888
1889         while (size >= 4) {
1890                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1891                 offset += 4;
1892                 size -= 4;
1893         }
1894         while (size >= 2) {
1895                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1896                 offset += 2;
1897                 size -= 2;
1898         }
1899         while (size >= 1) {
1900                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1901                 offset += 1;
1902                 size -= 1;
1903         }
1904 }
1905
1906 void
1907 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1908 {
1909         int cur_reg;
1910
1911         if (align == 0)
1912                 align = 4;
1913
1914         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1915         g_assert (size < 10000);
1916
1917         if (align < 4) {
1918                 /* This could be optimized further if neccesary */
1919                 while (size >= 1) {
1920                         cur_reg = alloc_preg (cfg);
1921                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1922                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1923                         doffset += 1;
1924                         soffset += 1;
1925                         size -= 1;
1926                 }
1927         }
1928
1929         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1930                 while (size >= 8) {
1931                         cur_reg = alloc_preg (cfg);
1932                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1933                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1934                         doffset += 8;
1935                         soffset += 8;
1936                         size -= 8;
1937                 }
1938         }
1939
1940         while (size >= 4) {
1941                 cur_reg = alloc_preg (cfg);
1942                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1943                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1944                 doffset += 4;
1945                 soffset += 4;
1946                 size -= 4;
1947         }
1948         while (size >= 2) {
1949                 cur_reg = alloc_preg (cfg);
1950                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1951                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1952                 doffset += 2;
1953                 soffset += 2;
1954                 size -= 2;
1955         }
1956         while (size >= 1) {
1957                 cur_reg = alloc_preg (cfg);
1958                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1959                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1960                 doffset += 1;
1961                 soffset += 1;
1962                 size -= 1;
1963         }
1964 }
1965
1966 static void
1967 emit_tls_set (MonoCompile *cfg, int sreg1, MonoTlsKey tls_key)
1968 {
1969         MonoInst *ins, *c;
1970
1971         if (cfg->compile_aot) {
1972                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1973                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1974                 ins->sreg1 = sreg1;
1975                 ins->sreg2 = c->dreg;
1976                 MONO_ADD_INS (cfg->cbb, ins);
1977         } else {
1978                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1979                 ins->sreg1 = sreg1;
1980                 ins->inst_offset = mini_get_tls_offset (tls_key);
1981                 MONO_ADD_INS (cfg->cbb, ins);
1982         }
1983 }
1984
1985 /*
1986  * emit_push_lmf:
1987  *
1988  *   Emit IR to push the current LMF onto the LMF stack.
1989  */
1990 static void
1991 emit_push_lmf (MonoCompile *cfg)
1992 {
1993         /*
1994          * Emit IR to push the LMF:
1995          * lmf_addr = <lmf_addr from tls>
1996          * lmf->lmf_addr = lmf_addr
1997          * lmf->prev_lmf = *lmf_addr
1998          * *lmf_addr = lmf
1999          */
2000         int lmf_reg, prev_lmf_reg;
2001         MonoInst *ins, *lmf_ins;
2002
2003         if (!cfg->lmf_ir)
2004                 return;
2005
2006         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2007                 /* Load current lmf */
2008                 lmf_ins = mono_get_lmf_intrinsic (cfg);
2009                 g_assert (lmf_ins);
2010                 MONO_ADD_INS (cfg->cbb, lmf_ins);
2011                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2012                 lmf_reg = ins->dreg;
2013                 /* Save previous_lmf */
2014                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2015                 /* Set new LMF */
2016                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2017         } else {
2018                 /*
2019                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2020                  */
2021                 if (!cfg->lmf_addr_var)
2022                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2023
2024 #ifdef HOST_WIN32
2025                 ins = mono_get_jit_tls_intrinsic (cfg);
2026                 if (ins) {
2027                         int jit_tls_dreg = ins->dreg;
2028
2029                         MONO_ADD_INS (cfg->cbb, ins);
2030                         lmf_reg = alloc_preg (cfg);
2031                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2032                 } else {
2033                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2034                 }
2035 #else
2036                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2037                 if (lmf_ins) {
2038                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2039                 } else {
2040 #ifdef TARGET_IOS
2041                         MonoInst *args [16], *jit_tls_ins, *ins;
2042
2043                         /* Inline mono_get_lmf_addr () */
2044                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2045
2046                         /* Load mono_jit_tls_id */
2047                         if (cfg->compile_aot)
2048                                 EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2049                         else
2050                                 EMIT_NEW_ICONST (cfg, args [0], mono_jit_tls_id);
2051                         /* call pthread_getspecific () */
2052                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2053                         /* lmf_addr = &jit_tls->lmf */
2054                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2055                         lmf_ins = ins;
2056 #else
2057                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2058 #endif
2059                 }
2060 #endif
2061                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2062
2063                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2064                 lmf_reg = ins->dreg;
2065
2066                 prev_lmf_reg = alloc_preg (cfg);
2067                 /* Save previous_lmf */
2068                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2069                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2070                 /* Set new lmf */
2071                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2072         }
2073 }
2074
2075 /*
2076  * emit_pop_lmf:
2077  *
2078  *   Emit IR to pop the current LMF from the LMF stack.
2079  */
2080 static void
2081 emit_pop_lmf (MonoCompile *cfg)
2082 {
2083         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2084         MonoInst *ins;
2085
2086         if (!cfg->lmf_ir)
2087                 return;
2088
2089         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2090         lmf_reg = ins->dreg;
2091
2092         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2093                 /* Load previous_lmf */
2094                 prev_lmf_reg = alloc_preg (cfg);
2095                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2096                 /* Set new LMF */
2097                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2098         } else {
2099                 /*
2100                  * Emit IR to pop the LMF:
2101                  * *(lmf->lmf_addr) = lmf->prev_lmf
2102                  */
2103                 /* This could be called before emit_push_lmf () */
2104                 if (!cfg->lmf_addr_var)
2105                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2106                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2107
2108                 prev_lmf_reg = alloc_preg (cfg);
2109                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2110                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2111         }
2112 }
2113
2114 static void
2115 emit_instrumentation_call (MonoCompile *cfg, void *func)
2116 {
2117         MonoInst *iargs [1];
2118
2119         /*
2120          * Avoid instrumenting inlined methods since it can
2121          * distort profiling results.
2122          */
2123         if (cfg->method != cfg->current_method)
2124                 return;
2125
2126         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2127                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2128                 mono_emit_jit_icall (cfg, func, iargs);
2129         }
2130 }
2131
2132 static int
2133 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
2134 {
2135 handle_enum:
2136         type = mini_get_underlying_type (type);
2137         switch (type->type) {
2138         case MONO_TYPE_VOID:
2139                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2140         case MONO_TYPE_I1:
2141         case MONO_TYPE_U1:
2142         case MONO_TYPE_I2:
2143         case MONO_TYPE_U2:
2144         case MONO_TYPE_I4:
2145         case MONO_TYPE_U4:
2146                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2147         case MONO_TYPE_I:
2148         case MONO_TYPE_U:
2149         case MONO_TYPE_PTR:
2150         case MONO_TYPE_FNPTR:
2151                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2152         case MONO_TYPE_CLASS:
2153         case MONO_TYPE_STRING:
2154         case MONO_TYPE_OBJECT:
2155         case MONO_TYPE_SZARRAY:
2156         case MONO_TYPE_ARRAY:
2157                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2158         case MONO_TYPE_I8:
2159         case MONO_TYPE_U8:
2160                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2161         case MONO_TYPE_R4:
2162                 if (cfg->r4fp)
2163                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2164                 else
2165                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2166         case MONO_TYPE_R8:
2167                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2168         case MONO_TYPE_VALUETYPE:
2169                 if (type->data.klass->enumtype) {
2170                         type = mono_class_enum_basetype (type->data.klass);
2171                         goto handle_enum;
2172                 } else
2173                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2174         case MONO_TYPE_TYPEDBYREF:
2175                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2176         case MONO_TYPE_GENERICINST:
2177                 type = &type->data.generic_class->container_class->byval_arg;
2178                 goto handle_enum;
2179         case MONO_TYPE_VAR:
2180         case MONO_TYPE_MVAR:
2181                 /* gsharedvt */
2182                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2183         default:
2184                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2185         }
2186         return -1;
2187 }
2188
2189 /*
2190  * target_type_is_incompatible:
2191  * @cfg: MonoCompile context
2192  *
2193  * Check that the item @arg on the evaluation stack can be stored
2194  * in the target type (can be a local, or field, etc).
2195  * The cfg arg can be used to check if we need verification or just
2196  * validity checks.
2197  *
2198  * Returns: non-0 value if arg can't be stored on a target.
2199  */
2200 static int
2201 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2202 {
2203         MonoType *simple_type;
2204         MonoClass *klass;
2205
2206         if (target->byref) {
2207                 /* FIXME: check that the pointed to types match */
2208                 if (arg->type == STACK_MP) {
2209                         MonoClass *base_class = mono_class_from_mono_type (target);
2210                         /* This is needed to handle gshared types + ldaddr */
2211                         simple_type = mini_get_underlying_type (&base_class->byval_arg);
2212                         return target->type != MONO_TYPE_I && arg->klass != base_class && arg->klass != mono_class_from_mono_type (simple_type);
2213                 }
2214                 if (arg->type == STACK_PTR)
2215                         return 0;
2216                 return 1;
2217         }
2218
2219         simple_type = mini_get_underlying_type (target);
2220         switch (simple_type->type) {
2221         case MONO_TYPE_VOID:
2222                 return 1;
2223         case MONO_TYPE_I1:
2224         case MONO_TYPE_U1:
2225         case MONO_TYPE_I2:
2226         case MONO_TYPE_U2:
2227         case MONO_TYPE_I4:
2228         case MONO_TYPE_U4:
2229                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2230                         return 1;
2231                 return 0;
2232         case MONO_TYPE_PTR:
2233                 /* STACK_MP is needed when setting pinned locals */
2234                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2235                         return 1;
2236                 return 0;
2237         case MONO_TYPE_I:
2238         case MONO_TYPE_U:
2239         case MONO_TYPE_FNPTR:
2240                 /*
2241                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2242                  * in native int. (#688008).
2243                  */
2244                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2245                         return 1;
2246                 return 0;
2247         case MONO_TYPE_CLASS:
2248         case MONO_TYPE_STRING:
2249         case MONO_TYPE_OBJECT:
2250         case MONO_TYPE_SZARRAY:
2251         case MONO_TYPE_ARRAY:
2252                 if (arg->type != STACK_OBJ)
2253                         return 1;
2254                 /* FIXME: check type compatibility */
2255                 return 0;
2256         case MONO_TYPE_I8:
2257         case MONO_TYPE_U8:
2258                 if (arg->type != STACK_I8)
2259                         return 1;
2260                 return 0;
2261         case MONO_TYPE_R4:
2262                 if (arg->type != cfg->r4_stack_type)
2263                         return 1;
2264                 return 0;
2265         case MONO_TYPE_R8:
2266                 if (arg->type != STACK_R8)
2267                         return 1;
2268                 return 0;
2269         case MONO_TYPE_VALUETYPE:
2270                 if (arg->type != STACK_VTYPE)
2271                         return 1;
2272                 klass = mono_class_from_mono_type (simple_type);
2273                 if (klass != arg->klass)
2274                         return 1;
2275                 return 0;
2276         case MONO_TYPE_TYPEDBYREF:
2277                 if (arg->type != STACK_VTYPE)
2278                         return 1;
2279                 klass = mono_class_from_mono_type (simple_type);
2280                 if (klass != arg->klass)
2281                         return 1;
2282                 return 0;
2283         case MONO_TYPE_GENERICINST:
2284                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2285                         MonoClass *target_class;
2286                         if (arg->type != STACK_VTYPE)
2287                                 return 1;
2288                         klass = mono_class_from_mono_type (simple_type);
2289                         target_class = mono_class_from_mono_type (target);
2290                         /* The second cases is needed when doing partial sharing */
2291                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2292                                 return 1;
2293                         return 0;
2294                 } else {
2295                         if (arg->type != STACK_OBJ)
2296                                 return 1;
2297                         /* FIXME: check type compatibility */
2298                         return 0;
2299                 }
2300         case MONO_TYPE_VAR:
2301         case MONO_TYPE_MVAR:
2302                 g_assert (cfg->gshared);
2303                 if (mini_type_var_is_vt (simple_type)) {
2304                         if (arg->type != STACK_VTYPE)
2305                                 return 1;
2306                 } else {
2307                         if (arg->type != STACK_OBJ)
2308                                 return 1;
2309                 }
2310                 return 0;
2311         default:
2312                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2313         }
2314         return 1;
2315 }
2316
2317 /*
2318  * Prepare arguments for passing to a function call.
2319  * Return a non-zero value if the arguments can't be passed to the given
2320  * signature.
2321  * The type checks are not yet complete and some conversions may need
2322  * casts on 32 or 64 bit architectures.
2323  *
2324  * FIXME: implement this using target_type_is_incompatible ()
2325  */
2326 static int
2327 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2328 {
2329         MonoType *simple_type;
2330         int i;
2331
2332         if (sig->hasthis) {
2333                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2334                         return 1;
2335                 args++;
2336         }
2337         for (i = 0; i < sig->param_count; ++i) {
2338                 if (sig->params [i]->byref) {
2339                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2340                                 return 1;
2341                         continue;
2342                 }
2343                 simple_type = mini_get_underlying_type (sig->params [i]);
2344 handle_enum:
2345                 switch (simple_type->type) {
2346                 case MONO_TYPE_VOID:
2347                         return 1;
2348                         continue;
2349                 case MONO_TYPE_I1:
2350                 case MONO_TYPE_U1:
2351                 case MONO_TYPE_I2:
2352                 case MONO_TYPE_U2:
2353                 case MONO_TYPE_I4:
2354                 case MONO_TYPE_U4:
2355                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2356                                 return 1;
2357                         continue;
2358                 case MONO_TYPE_I:
2359                 case MONO_TYPE_U:
2360                 case MONO_TYPE_PTR:
2361                 case MONO_TYPE_FNPTR:
2362                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2363                                 return 1;
2364                         continue;
2365                 case MONO_TYPE_CLASS:
2366                 case MONO_TYPE_STRING:
2367                 case MONO_TYPE_OBJECT:
2368                 case MONO_TYPE_SZARRAY:
2369                 case MONO_TYPE_ARRAY:
2370                         if (args [i]->type != STACK_OBJ)
2371                                 return 1;
2372                         continue;
2373                 case MONO_TYPE_I8:
2374                 case MONO_TYPE_U8:
2375                         if (args [i]->type != STACK_I8)
2376                                 return 1;
2377                         continue;
2378                 case MONO_TYPE_R4:
2379                         if (args [i]->type != cfg->r4_stack_type)
2380                                 return 1;
2381                         continue;
2382                 case MONO_TYPE_R8:
2383                         if (args [i]->type != STACK_R8)
2384                                 return 1;
2385                         continue;
2386                 case MONO_TYPE_VALUETYPE:
2387                         if (simple_type->data.klass->enumtype) {
2388                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2389                                 goto handle_enum;
2390                         }
2391                         if (args [i]->type != STACK_VTYPE)
2392                                 return 1;
2393                         continue;
2394                 case MONO_TYPE_TYPEDBYREF:
2395                         if (args [i]->type != STACK_VTYPE)
2396                                 return 1;
2397                         continue;
2398                 case MONO_TYPE_GENERICINST:
2399                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2400                         goto handle_enum;
2401                 case MONO_TYPE_VAR:
2402                 case MONO_TYPE_MVAR:
2403                         /* gsharedvt */
2404                         if (args [i]->type != STACK_VTYPE)
2405                                 return 1;
2406                         continue;
2407                 default:
2408                         g_error ("unknown type 0x%02x in check_call_signature",
2409                                  simple_type->type);
2410                 }
2411         }
2412         return 0;
2413 }
2414
2415 static int
2416 callvirt_to_call (int opcode)
2417 {
2418         switch (opcode) {
2419         case OP_CALL_MEMBASE:
2420                 return OP_CALL;
2421         case OP_VOIDCALL_MEMBASE:
2422                 return OP_VOIDCALL;
2423         case OP_FCALL_MEMBASE:
2424                 return OP_FCALL;
2425         case OP_RCALL_MEMBASE:
2426                 return OP_RCALL;
2427         case OP_VCALL_MEMBASE:
2428                 return OP_VCALL;
2429         case OP_LCALL_MEMBASE:
2430                 return OP_LCALL;
2431         default:
2432                 g_assert_not_reached ();
2433         }
2434
2435         return -1;
2436 }
2437
2438 static int
2439 callvirt_to_call_reg (int opcode)
2440 {
2441         switch (opcode) {
2442         case OP_CALL_MEMBASE:
2443                 return OP_CALL_REG;
2444         case OP_VOIDCALL_MEMBASE:
2445                 return OP_VOIDCALL_REG;
2446         case OP_FCALL_MEMBASE:
2447                 return OP_FCALL_REG;
2448         case OP_RCALL_MEMBASE:
2449                 return OP_RCALL_REG;
2450         case OP_VCALL_MEMBASE:
2451                 return OP_VCALL_REG;
2452         case OP_LCALL_MEMBASE:
2453                 return OP_LCALL_REG;
2454         default:
2455                 g_assert_not_reached ();
2456         }
2457
2458         return -1;
2459 }
2460
2461 /* Either METHOD or IMT_ARG needs to be set */
2462 static void
2463 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2464 {
2465         int method_reg;
2466
2467         if (COMPILE_LLVM (cfg)) {
2468                 if (imt_arg) {
2469                         method_reg = alloc_preg (cfg);
2470                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2471                 } else {
2472                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2473                         method_reg = ins->dreg;
2474                 }
2475
2476 #ifdef ENABLE_LLVM
2477                 call->imt_arg_reg = method_reg;
2478 #endif
2479                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2480                 return;
2481         }
2482
2483         if (imt_arg) {
2484                 method_reg = alloc_preg (cfg);
2485                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2486         } else {
2487                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2488                 method_reg = ins->dreg;
2489         }
2490
2491         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2492 }
2493
2494 static MonoJumpInfo *
2495 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2496 {
2497         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2498
2499         ji->ip.i = ip;
2500         ji->type = type;
2501         ji->data.target = target;
2502
2503         return ji;
2504 }
2505
2506 static int
2507 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2508 {
2509         if (cfg->gshared)
2510                 return mono_class_check_context_used (klass);
2511         else
2512                 return 0;
2513 }
2514
2515 static int
2516 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2517 {
2518         if (cfg->gshared)
2519                 return mono_method_check_context_used (method);
2520         else
2521                 return 0;
2522 }
2523
2524 /*
2525  * check_method_sharing:
2526  *
2527  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2528  */
2529 static void
2530 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2531 {
2532         gboolean pass_vtable = FALSE;
2533         gboolean pass_mrgctx = FALSE;
2534
2535         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2536                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2537                 gboolean sharable = FALSE;
2538
2539                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2540                         sharable = TRUE;
2541
2542                 /*
2543                  * Pass vtable iff target method might
2544                  * be shared, which means that sharing
2545                  * is enabled for its class and its
2546                  * context is sharable (and it's not a
2547                  * generic method).
2548                  */
2549                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2550                         pass_vtable = TRUE;
2551         }
2552
2553         if (mini_method_get_context (cmethod) &&
2554                 mini_method_get_context (cmethod)->method_inst) {
2555                 g_assert (!pass_vtable);
2556
2557                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2558                         pass_mrgctx = TRUE;
2559                 } else {
2560                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2561                                 pass_mrgctx = TRUE;
2562                 }
2563         }
2564
2565         if (out_pass_vtable)
2566                 *out_pass_vtable = pass_vtable;
2567         if (out_pass_mrgctx)
2568                 *out_pass_mrgctx = pass_mrgctx;
2569 }
2570
2571 inline static MonoCallInst *
2572 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2573                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2574 {
2575         MonoType *sig_ret;
2576         MonoCallInst *call;
2577 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2578         int i;
2579 #endif
2580
2581         if (cfg->llvm_only)
2582                 tail = FALSE;
2583
2584         if (tail) {
2585                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2586
2587                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2588         } else
2589                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2590
2591         call->args = args;
2592         call->signature = sig;
2593         call->rgctx_reg = rgctx;
2594         sig_ret = mini_get_underlying_type (sig->ret);
2595
2596         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2597
2598         if (tail) {
2599                 if (mini_type_is_vtype (sig_ret)) {
2600                         call->vret_var = cfg->vret_addr;
2601                         //g_assert_not_reached ();
2602                 }
2603         } else if (mini_type_is_vtype (sig_ret)) {
2604                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2605                 MonoInst *loada;
2606
2607                 temp->backend.is_pinvoke = sig->pinvoke;
2608
2609                 /*
2610                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2611                  * address of return value to increase optimization opportunities.
2612                  * Before vtype decomposition, the dreg of the call ins itself represents the
2613                  * fact the call modifies the return value. After decomposition, the call will
2614                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2615                  * will be transformed into an LDADDR.
2616                  */
2617                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2618                 loada->dreg = alloc_preg (cfg);
2619                 loada->inst_p0 = temp;
2620                 /* We reference the call too since call->dreg could change during optimization */
2621                 loada->inst_p1 = call;
2622                 MONO_ADD_INS (cfg->cbb, loada);
2623
2624                 call->inst.dreg = temp->dreg;
2625
2626                 call->vret_var = loada;
2627         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2628                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2629
2630 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2631         if (COMPILE_SOFT_FLOAT (cfg)) {
2632                 /*
2633                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2634                  * an icall, but that cannot be done during the call sequence since it would clobber
2635                  * the call registers + the stack. So we do it before emitting the call.
2636                  */
2637                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2638                         MonoType *t;
2639                         MonoInst *in = call->args [i];
2640
2641                         if (i >= sig->hasthis)
2642                                 t = sig->params [i - sig->hasthis];
2643                         else
2644                                 t = &mono_defaults.int_class->byval_arg;
2645                         t = mono_type_get_underlying_type (t);
2646
2647                         if (!t->byref && t->type == MONO_TYPE_R4) {
2648                                 MonoInst *iargs [1];
2649                                 MonoInst *conv;
2650
2651                                 iargs [0] = in;
2652                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2653
2654                                 /* The result will be in an int vreg */
2655                                 call->args [i] = conv;
2656                         }
2657                 }
2658         }
2659 #endif
2660
2661         call->need_unbox_trampoline = unbox_trampoline;
2662
2663 #ifdef ENABLE_LLVM
2664         if (COMPILE_LLVM (cfg))
2665                 mono_llvm_emit_call (cfg, call);
2666         else
2667                 mono_arch_emit_call (cfg, call);
2668 #else
2669         mono_arch_emit_call (cfg, call);
2670 #endif
2671
2672         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2673         cfg->flags |= MONO_CFG_HAS_CALLS;
2674
2675         return call;
2676 }
2677
2678 static void
2679 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2680 {
2681         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2682         cfg->uses_rgctx_reg = TRUE;
2683         call->rgctx_reg = TRUE;
2684 #ifdef ENABLE_LLVM
2685         call->rgctx_arg_reg = rgctx_reg;
2686 #endif
2687 }
2688
2689 inline static MonoInst*
2690 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2691 {
2692         MonoCallInst *call;
2693         MonoInst *ins;
2694         int rgctx_reg = -1;
2695         gboolean check_sp = FALSE;
2696
2697         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2698                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2699
2700                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2701                         check_sp = TRUE;
2702         }
2703
2704         if (rgctx_arg) {
2705                 rgctx_reg = mono_alloc_preg (cfg);
2706                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2707         }
2708
2709         if (check_sp) {
2710                 if (!cfg->stack_inbalance_var)
2711                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2712
2713                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2714                 ins->dreg = cfg->stack_inbalance_var->dreg;
2715                 MONO_ADD_INS (cfg->cbb, ins);
2716         }
2717
2718         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2719
2720         call->inst.sreg1 = addr->dreg;
2721
2722         if (imt_arg)
2723                 emit_imt_argument (cfg, call, NULL, imt_arg);
2724
2725         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2726
2727         if (check_sp) {
2728                 int sp_reg;
2729
2730                 sp_reg = mono_alloc_preg (cfg);
2731
2732                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2733                 ins->dreg = sp_reg;
2734                 MONO_ADD_INS (cfg->cbb, ins);
2735
2736                 /* Restore the stack so we don't crash when throwing the exception */
2737                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2738                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2739                 MONO_ADD_INS (cfg->cbb, ins);
2740
2741                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2742                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2743         }
2744
2745         if (rgctx_arg)
2746                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2747
2748         return (MonoInst*)call;
2749 }
2750
2751 static MonoInst*
2752 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2753
2754 static MonoInst*
2755 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2756 static MonoInst*
2757 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2758
2759 static MonoInst*
2760 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2761                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2762 {
2763 #ifndef DISABLE_REMOTING
2764         gboolean might_be_remote = FALSE;
2765 #endif
2766         gboolean virtual_ = this_ins != NULL;
2767         gboolean enable_for_aot = TRUE;
2768         int context_used;
2769         MonoCallInst *call;
2770         MonoInst *call_target = NULL;
2771         int rgctx_reg = 0;
2772         gboolean need_unbox_trampoline;
2773
2774         if (!sig)
2775                 sig = mono_method_signature (method);
2776
2777         if (cfg->llvm_only && (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE))
2778                 g_assert_not_reached ();
2779
2780         if (rgctx_arg) {
2781                 rgctx_reg = mono_alloc_preg (cfg);
2782                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2783         }
2784
2785         if (method->string_ctor) {
2786                 /* Create the real signature */
2787                 /* FIXME: Cache these */
2788                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2789                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2790
2791                 sig = ctor_sig;
2792         }
2793
2794         context_used = mini_method_check_context_used (cfg, method);
2795
2796 #ifndef DISABLE_REMOTING
2797         might_be_remote = this_ins && sig->hasthis &&
2798                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2799                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2800
2801         if (might_be_remote && context_used) {
2802                 MonoInst *addr;
2803
2804                 g_assert (cfg->gshared);
2805
2806                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2807
2808                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2809         }
2810 #endif
2811
2812         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2813                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2814
2815         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2816
2817         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2818
2819 #ifndef DISABLE_REMOTING
2820         if (might_be_remote)
2821                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2822         else
2823 #endif
2824                 call->method = method;
2825         call->inst.flags |= MONO_INST_HAS_METHOD;
2826         call->inst.inst_left = this_ins;
2827         call->tail_call = tail;
2828
2829         if (virtual_) {
2830                 int vtable_reg, slot_reg, this_reg;
2831                 int offset;
2832
2833                 this_reg = this_ins->dreg;
2834
2835                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2836                         MonoInst *dummy_use;
2837
2838                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2839
2840                         /* Make a call to delegate->invoke_impl */
2841                         call->inst.inst_basereg = this_reg;
2842                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2843                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2844
2845                         /* We must emit a dummy use here because the delegate trampoline will
2846                         replace the 'this' argument with the delegate target making this activation
2847                         no longer a root for the delegate.
2848                         This is an issue for delegates that target collectible code such as dynamic
2849                         methods of GC'able assemblies.
2850
2851                         For a test case look into #667921.
2852
2853                         FIXME: a dummy use is not the best way to do it as the local register allocator
2854                         will put it on a caller save register and spil it around the call.
2855                         Ideally, we would either put it on a callee save register or only do the store part.
2856                          */
2857                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2858
2859                         return (MonoInst*)call;
2860                 }
2861
2862                 if ((!cfg->compile_aot || enable_for_aot) &&
2863                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2864                          (MONO_METHOD_IS_FINAL (method) &&
2865                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2866                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2867                         /*
2868                          * the method is not virtual, we just need to ensure this is not null
2869                          * and then we can call the method directly.
2870                          */
2871 #ifndef DISABLE_REMOTING
2872                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2873                                 /*
2874                                  * The check above ensures method is not gshared, this is needed since
2875                                  * gshared methods can't have wrappers.
2876                                  */
2877                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2878                         }
2879 #endif
2880
2881                         if (!method->string_ctor)
2882                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2883
2884                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2885                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2886                         /*
2887                          * the method is virtual, but we can statically dispatch since either
2888                          * it's class or the method itself are sealed.
2889                          * But first we need to ensure it's not a null reference.
2890                          */
2891                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2892
2893                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2894                 } else if (call_target) {
2895                         vtable_reg = alloc_preg (cfg);
2896                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2897
2898                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2899                         call->inst.sreg1 = call_target->dreg;
2900                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2901                 } else {
2902                         vtable_reg = alloc_preg (cfg);
2903                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2904                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2905                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2906                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2907                                 slot_reg = vtable_reg;
2908                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2909                         } else {
2910                                 slot_reg = vtable_reg;
2911                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2912                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2913                                 if (imt_arg) {
2914                                         g_assert (mono_method_signature (method)->generic_param_count);
2915                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2916                                 }
2917                         }
2918
2919                         call->inst.sreg1 = slot_reg;
2920                         call->inst.inst_offset = offset;
2921                         call->is_virtual = TRUE;
2922                 }
2923         }
2924
2925         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2926
2927         if (rgctx_arg)
2928                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2929
2930         return (MonoInst*)call;
2931 }
2932
2933 MonoInst*
2934 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2935 {
2936         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2937 }
2938
2939 MonoInst*
2940 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2941                                            MonoInst **args)
2942 {
2943         MonoCallInst *call;
2944
2945         g_assert (sig);
2946
2947         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2948         call->fptr = func;
2949
2950         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2951
2952         return (MonoInst*)call;
2953 }
2954
2955 MonoInst*
2956 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2957 {
2958         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2959
2960         g_assert (info);
2961
2962         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2963 }
2964
2965 /*
2966  * mono_emit_abs_call:
2967  *
2968  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2969  */
2970 inline static MonoInst*
2971 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2972                                         MonoMethodSignature *sig, MonoInst **args)
2973 {
2974         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2975         MonoInst *ins;
2976
2977         /*
2978          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2979          * handle it.
2980          */
2981         if (cfg->abs_patches == NULL)
2982                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2983         g_hash_table_insert (cfg->abs_patches, ji, ji);
2984         ins = mono_emit_native_call (cfg, ji, sig, args);
2985         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2986         return ins;
2987 }
2988
2989 static MonoMethodSignature*
2990 sig_to_rgctx_sig (MonoMethodSignature *sig)
2991 {
2992         // FIXME: memory allocation
2993         MonoMethodSignature *res;
2994         int i;
2995
2996         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2997         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2998         res->param_count = sig->param_count + 1;
2999         for (i = 0; i < sig->param_count; ++i)
3000                 res->params [i] = sig->params [i];
3001         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
3002         return res;
3003 }
3004
3005 /* Make an indirect call to FSIG passing an additional argument */
3006 static MonoInst*
3007 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
3008 {
3009         MonoMethodSignature *csig;
3010         MonoInst *args_buf [16];
3011         MonoInst **args;
3012         int i, pindex, tmp_reg;
3013
3014         /* Make a call with an rgctx/extra arg */
3015         if (fsig->param_count + 2 < 16)
3016                 args = args_buf;
3017         else
3018                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
3019         pindex = 0;
3020         if (fsig->hasthis)
3021                 args [pindex ++] = orig_args [0];
3022         for (i = 0; i < fsig->param_count; ++i)
3023                 args [pindex ++] = orig_args [fsig->hasthis + i];
3024         tmp_reg = alloc_preg (cfg);
3025         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
3026         csig = sig_to_rgctx_sig (fsig);
3027         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
3028 }
3029
3030 /* Emit an indirect call to the function descriptor ADDR */
3031 static MonoInst*
3032 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
3033 {
3034         int addr_reg, arg_reg;
3035         MonoInst *call_target;
3036
3037         g_assert (cfg->llvm_only);
3038
3039         /*
3040          * addr points to a <addr, arg> pair, load both of them, and
3041          * make a call to addr, passing arg as an extra arg.
3042          */
3043         addr_reg = alloc_preg (cfg);
3044         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
3045         arg_reg = alloc_preg (cfg);
3046         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
3047
3048         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
3049 }
3050
3051 static gboolean
3052 direct_icalls_enabled (MonoCompile *cfg)
3053 {
3054         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3055 #ifdef TARGET_AMD64
3056         if (cfg->compile_llvm)
3057                 return FALSE;
3058 #endif
3059         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
3060                 return FALSE;
3061         return TRUE;
3062 }
3063
3064 MonoInst*
3065 mono_emit_jit_icall_by_info (MonoCompile *cfg, MonoJitICallInfo *info, MonoInst **args)
3066 {
3067         /*
3068          * Call the jit icall without a wrapper if possible.
3069          * The wrapper is needed for the following reasons:
3070          * - to handle exceptions thrown using mono_raise_exceptions () from the
3071          *   icall function. The EH code needs the lmf frame pushed by the
3072          *   wrapper to be able to unwind back to managed code.
3073          * - to be able to do stack walks for asynchronously suspended
3074          *   threads when debugging.
3075          */
3076         if (info->no_raise && direct_icalls_enabled (cfg)) {
3077                 char *name;
3078                 int costs;
3079
3080                 if (!info->wrapper_method) {
3081                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
3082                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
3083                         g_free (name);
3084                         mono_memory_barrier ();
3085                 }
3086
3087                 /*
3088                  * Inline the wrapper method, which is basically a call to the C icall, and
3089                  * an exception check.
3090                  */
3091                 costs = inline_method (cfg, info->wrapper_method, NULL,
3092                                                            args, NULL, cfg->real_offset, TRUE);
3093                 g_assert (costs > 0);
3094                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
3095
3096                 return args [0];
3097         } else {
3098                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3099         }
3100 }
3101
3102 static MonoInst*
3103 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3104 {
3105         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3106                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3107                         int widen_op = -1;
3108
3109                         /*
3110                          * Native code might return non register sized integers
3111                          * without initializing the upper bits.
3112                          */
3113                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3114                         case OP_LOADI1_MEMBASE:
3115                                 widen_op = OP_ICONV_TO_I1;
3116                                 break;
3117                         case OP_LOADU1_MEMBASE:
3118                                 widen_op = OP_ICONV_TO_U1;
3119                                 break;
3120                         case OP_LOADI2_MEMBASE:
3121                                 widen_op = OP_ICONV_TO_I2;
3122                                 break;
3123                         case OP_LOADU2_MEMBASE:
3124                                 widen_op = OP_ICONV_TO_U2;
3125                                 break;
3126                         default:
3127                                 break;
3128                         }
3129
3130                         if (widen_op != -1) {
3131                                 int dreg = alloc_preg (cfg);
3132                                 MonoInst *widen;
3133
3134                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3135                                 widen->type = ins->type;
3136                                 ins = widen;
3137                         }
3138                 }
3139         }
3140
3141         return ins;
3142 }
3143
3144 static MonoMethod*
3145 get_memcpy_method (void)
3146 {
3147         static MonoMethod *memcpy_method = NULL;
3148         if (!memcpy_method) {
3149                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3150                 if (!memcpy_method)
3151                         g_error ("Old corlib found. Install a new one");
3152         }
3153         return memcpy_method;
3154 }
3155
3156 static void
3157 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3158 {
3159         MonoClassField *field;
3160         gpointer iter = NULL;
3161
3162         while ((field = mono_class_get_fields (klass, &iter))) {
3163                 int foffset;
3164
3165                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3166                         continue;
3167                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3168                 if (mini_type_is_reference (mono_field_get_type (field))) {
3169                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3170                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3171                 } else {
3172                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3173                         if (field_class->has_references)
3174                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3175                 }
3176         }
3177 }
3178
3179 static void
3180 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3181 {
3182         int card_table_shift_bits;
3183         gpointer card_table_mask;
3184         guint8 *card_table;
3185         MonoInst *dummy_use;
3186         int nursery_shift_bits;
3187         size_t nursery_size;
3188
3189         if (!cfg->gen_write_barriers)
3190                 return;
3191
3192         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3193
3194         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3195
3196         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3197                 MonoInst *wbarrier;
3198
3199                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3200                 wbarrier->sreg1 = ptr->dreg;
3201                 wbarrier->sreg2 = value->dreg;
3202                 MONO_ADD_INS (cfg->cbb, wbarrier);
3203         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3204                 int offset_reg = alloc_preg (cfg);
3205                 int card_reg;
3206                 MonoInst *ins;
3207
3208                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3209                 if (card_table_mask)
3210                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3211
3212                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3213                  * IMM's larger than 32bits.
3214                  */
3215                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3216                 card_reg = ins->dreg;
3217
3218                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3219                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3220         } else {
3221                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3222                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3223         }
3224
3225         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3226 }
3227
3228 static gboolean
3229 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3230 {
3231         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3232         unsigned need_wb = 0;
3233
3234         if (align == 0)
3235                 align = 4;
3236
3237         /*types with references can't have alignment smaller than sizeof(void*) */
3238         if (align < SIZEOF_VOID_P)
3239                 return FALSE;
3240
3241         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3242         if (size > 32 * SIZEOF_VOID_P)
3243                 return FALSE;
3244
3245         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3246
3247         /* We don't unroll more than 5 stores to avoid code bloat. */
3248         if (size > 5 * SIZEOF_VOID_P) {
3249                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3250                 size += (SIZEOF_VOID_P - 1);
3251                 size &= ~(SIZEOF_VOID_P - 1);
3252
3253                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3254                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3255                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3256                 return TRUE;
3257         }
3258
3259         destreg = iargs [0]->dreg;
3260         srcreg = iargs [1]->dreg;
3261         offset = 0;
3262
3263         dest_ptr_reg = alloc_preg (cfg);
3264         tmp_reg = alloc_preg (cfg);
3265
3266         /*tmp = dreg*/
3267         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3268
3269         while (size >= SIZEOF_VOID_P) {
3270                 MonoInst *load_inst;
3271                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3272                 load_inst->dreg = tmp_reg;
3273                 load_inst->inst_basereg = srcreg;
3274                 load_inst->inst_offset = offset;
3275                 MONO_ADD_INS (cfg->cbb, load_inst);
3276
3277                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3278
3279                 if (need_wb & 0x1)
3280                         emit_write_barrier (cfg, iargs [0], load_inst);
3281
3282                 offset += SIZEOF_VOID_P;
3283                 size -= SIZEOF_VOID_P;
3284                 need_wb >>= 1;
3285
3286                 /*tmp += sizeof (void*)*/
3287                 if (size >= SIZEOF_VOID_P) {
3288                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3289                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3290                 }
3291         }
3292
3293         /* Those cannot be references since size < sizeof (void*) */
3294         while (size >= 4) {
3295                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3296                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3297                 offset += 4;
3298                 size -= 4;
3299         }
3300
3301         while (size >= 2) {
3302                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3303                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3304                 offset += 2;
3305                 size -= 2;
3306         }
3307
3308         while (size >= 1) {
3309                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3310                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3311                 offset += 1;
3312                 size -= 1;
3313         }
3314
3315         return TRUE;
3316 }
3317
3318 /*
3319  * Emit code to copy a valuetype of type @klass whose address is stored in
3320  * @src->dreg to memory whose address is stored at @dest->dreg.
3321  */
3322 void
3323 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3324 {
3325         MonoInst *iargs [4];
3326         int n;
3327         guint32 align = 0;
3328         MonoMethod *memcpy_method;
3329         MonoInst *size_ins = NULL;
3330         MonoInst *memcpy_ins = NULL;
3331
3332         g_assert (klass);
3333         if (cfg->gshared)
3334                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3335
3336         /*
3337          * This check breaks with spilled vars... need to handle it during verification anyway.
3338          * g_assert (klass && klass == src->klass && klass == dest->klass);
3339          */
3340
3341         if (mini_is_gsharedvt_klass (klass)) {
3342                 g_assert (!native);
3343                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3344                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3345         }
3346
3347         if (native)
3348                 n = mono_class_native_size (klass, &align);
3349         else
3350                 n = mono_class_value_size (klass, &align);
3351
3352         /* if native is true there should be no references in the struct */
3353         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3354                 /* Avoid barriers when storing to the stack */
3355                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3356                           (dest->opcode == OP_LDADDR))) {
3357                         int context_used;
3358
3359                         iargs [0] = dest;
3360                         iargs [1] = src;
3361
3362                         context_used = mini_class_check_context_used (cfg, klass);
3363
3364                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3365                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3366                                 return;
3367                         } else if (context_used) {
3368                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3369                         }  else {
3370                                 iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3371                                 if (!cfg->compile_aot)
3372                                         mono_class_compute_gc_descriptor (klass);
3373                         }
3374
3375                         if (size_ins)
3376                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3377                         else
3378                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3379                         return;
3380                 }
3381         }
3382
3383         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3384                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3385                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3386         } else {
3387                 iargs [0] = dest;
3388                 iargs [1] = src;
3389                 if (size_ins)
3390                         iargs [2] = size_ins;
3391                 else
3392                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3393
3394                 memcpy_method = get_memcpy_method ();
3395                 if (memcpy_ins)
3396                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3397                 else
3398                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3399         }
3400 }
3401
3402 static MonoMethod*
3403 get_memset_method (void)
3404 {
3405         static MonoMethod *memset_method = NULL;
3406         if (!memset_method) {
3407                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3408                 if (!memset_method)
3409                         g_error ("Old corlib found. Install a new one");
3410         }
3411         return memset_method;
3412 }
3413
3414 void
3415 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3416 {
3417         MonoInst *iargs [3];
3418         int n;
3419         guint32 align;
3420         MonoMethod *memset_method;
3421         MonoInst *size_ins = NULL;
3422         MonoInst *bzero_ins = NULL;
3423         static MonoMethod *bzero_method;
3424
3425         /* FIXME: Optimize this for the case when dest is an LDADDR */
3426         mono_class_init (klass);
3427         if (mini_is_gsharedvt_klass (klass)) {
3428                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3429                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3430                 if (!bzero_method)
3431                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3432                 g_assert (bzero_method);
3433                 iargs [0] = dest;
3434                 iargs [1] = size_ins;
3435                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3436                 return;
3437         }
3438
3439         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3440
3441         n = mono_class_value_size (klass, &align);
3442
3443         if (n <= sizeof (gpointer) * 8) {
3444                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3445         }
3446         else {
3447                 memset_method = get_memset_method ();
3448                 iargs [0] = dest;
3449                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3450                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3451                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3452         }
3453 }
3454
3455 /*
3456  * emit_get_rgctx:
3457  *
3458  *   Emit IR to return either the this pointer for instance method,
3459  * or the mrgctx for static methods.
3460  */
3461 static MonoInst*
3462 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3463 {
3464         MonoInst *this_ins = NULL;
3465
3466         g_assert (cfg->gshared);
3467
3468         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3469                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3470                         !method->klass->valuetype)
3471                 EMIT_NEW_ARGLOAD (cfg, this_ins, 0);
3472
3473         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3474                 MonoInst *mrgctx_loc, *mrgctx_var;
3475
3476                 g_assert (!this_ins);
3477                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3478
3479                 mrgctx_loc = mono_get_vtable_var (cfg);
3480                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3481
3482                 return mrgctx_var;
3483         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3484                 MonoInst *vtable_loc, *vtable_var;
3485
3486                 g_assert (!this_ins);
3487
3488                 vtable_loc = mono_get_vtable_var (cfg);
3489                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3490
3491                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3492                         MonoInst *mrgctx_var = vtable_var;
3493                         int vtable_reg;
3494
3495                         vtable_reg = alloc_preg (cfg);
3496                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3497                         vtable_var->type = STACK_PTR;
3498                 }
3499
3500                 return vtable_var;
3501         } else {
3502                 MonoInst *ins;
3503                 int vtable_reg;
3504
3505                 vtable_reg = alloc_preg (cfg);
3506                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3507                 return ins;
3508         }
3509 }
3510
3511 static MonoJumpInfoRgctxEntry *
3512 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3513 {
3514         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3515         res->method = method;
3516         res->in_mrgctx = in_mrgctx;
3517         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3518         res->data->type = patch_type;
3519         res->data->data.target = patch_data;
3520         res->info_type = info_type;
3521
3522         return res;
3523 }
3524
3525 static inline MonoInst*
3526 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3527 {
3528         MonoInst *args [16];
3529         MonoInst *call;
3530
3531         // FIXME: No fastpath since the slot is not a compile time constant
3532         args [0] = rgctx;
3533         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3534         if (entry->in_mrgctx)
3535                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3536         else
3537                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3538         return call;
3539 #if 0
3540         /*
3541          * FIXME: This can be called during decompose, which is a problem since it creates
3542          * new bblocks.
3543          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3544          */
3545         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3546         gboolean mrgctx;
3547         MonoBasicBlock *is_null_bb, *end_bb;
3548         MonoInst *res, *ins, *call;
3549         MonoInst *args[16];
3550
3551         slot = mini_get_rgctx_entry_slot (entry);
3552
3553         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3554         index = MONO_RGCTX_SLOT_INDEX (slot);
3555         if (mrgctx)
3556                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3557         for (depth = 0; ; ++depth) {
3558                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3559
3560                 if (index < size - 1)
3561                         break;
3562                 index -= size - 1;
3563         }
3564
3565         NEW_BBLOCK (cfg, end_bb);
3566         NEW_BBLOCK (cfg, is_null_bb);
3567
3568         if (mrgctx) {
3569                 rgctx_reg = rgctx->dreg;
3570         } else {
3571                 rgctx_reg = alloc_preg (cfg);
3572
3573                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3574                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3575                 NEW_BBLOCK (cfg, is_null_bb);
3576
3577                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3578                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3579         }
3580
3581         for (i = 0; i < depth; ++i) {
3582                 int array_reg = alloc_preg (cfg);
3583
3584                 /* load ptr to next array */
3585                 if (mrgctx && i == 0)
3586                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3587                 else
3588                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3589                 rgctx_reg = array_reg;
3590                 /* is the ptr null? */
3591                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3592                 /* if yes, jump to actual trampoline */
3593                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3594         }
3595
3596         /* fetch slot */
3597         val_reg = alloc_preg (cfg);
3598         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3599         /* is the slot null? */
3600         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3601         /* if yes, jump to actual trampoline */
3602         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3603
3604         /* Fastpath */
3605         res_reg = alloc_preg (cfg);
3606         MONO_INST_NEW (cfg, ins, OP_MOVE);
3607         ins->dreg = res_reg;
3608         ins->sreg1 = val_reg;
3609         MONO_ADD_INS (cfg->cbb, ins);
3610         res = ins;
3611         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3612
3613         /* Slowpath */
3614         MONO_START_BB (cfg, is_null_bb);
3615         args [0] = rgctx;
3616         EMIT_NEW_ICONST (cfg, args [1], index);
3617         if (mrgctx)
3618                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3619         else
3620                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3621         MONO_INST_NEW (cfg, ins, OP_MOVE);
3622         ins->dreg = res_reg;
3623         ins->sreg1 = call->dreg;
3624         MONO_ADD_INS (cfg->cbb, ins);
3625         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3626
3627         MONO_START_BB (cfg, end_bb);
3628
3629         return res;
3630 #endif
3631 }
3632
3633 /*
3634  * emit_rgctx_fetch:
3635  *
3636  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3637  * given by RGCTX.
3638  */
3639 static inline MonoInst*
3640 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3641 {
3642         if (cfg->llvm_only)
3643                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3644         else
3645                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3646 }
3647
3648 static MonoInst*
3649 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3650                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3651 {
3652         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);
3653         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3654
3655         return emit_rgctx_fetch (cfg, rgctx, entry);
3656 }
3657
3658 static MonoInst*
3659 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3660                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3661 {
3662         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);
3663         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3664
3665         return emit_rgctx_fetch (cfg, rgctx, entry);
3666 }
3667
3668 static MonoInst*
3669 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3670                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3671 {
3672         MonoJumpInfoGSharedVtCall *call_info;
3673         MonoJumpInfoRgctxEntry *entry;
3674         MonoInst *rgctx;
3675
3676         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3677         call_info->sig = sig;
3678         call_info->method = cmethod;
3679
3680         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);
3681         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3682
3683         return emit_rgctx_fetch (cfg, rgctx, entry);
3684 }
3685
3686 /*
3687  * emit_get_rgctx_virt_method:
3688  *
3689  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3690  */
3691 static MonoInst*
3692 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3693                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3694 {
3695         MonoJumpInfoVirtMethod *info;
3696         MonoJumpInfoRgctxEntry *entry;
3697         MonoInst *rgctx;
3698
3699         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3700         info->klass = klass;
3701         info->method = virt_method;
3702
3703         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3704         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3705
3706         return emit_rgctx_fetch (cfg, rgctx, entry);
3707 }
3708
3709 static MonoInst*
3710 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3711                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3712 {
3713         MonoJumpInfoRgctxEntry *entry;
3714         MonoInst *rgctx;
3715
3716         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);
3717         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3718
3719         return emit_rgctx_fetch (cfg, rgctx, entry);
3720 }
3721
3722 /*
3723  * emit_get_rgctx_method:
3724  *
3725  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3726  * normal constants, else emit a load from the rgctx.
3727  */
3728 static MonoInst*
3729 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3730                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3731 {
3732         if (!context_used) {
3733                 MonoInst *ins;
3734
3735                 switch (rgctx_type) {
3736                 case MONO_RGCTX_INFO_METHOD:
3737                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3738                         return ins;
3739                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3740                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3741                         return ins;
3742                 default:
3743                         g_assert_not_reached ();
3744                 }
3745         } else {
3746                 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);
3747                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3748
3749                 return emit_rgctx_fetch (cfg, rgctx, entry);
3750         }
3751 }
3752
3753 static MonoInst*
3754 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3755                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3756 {
3757         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);
3758         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3759
3760         return emit_rgctx_fetch (cfg, rgctx, entry);
3761 }
3762
3763 static int
3764 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3765 {
3766         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3767         MonoRuntimeGenericContextInfoTemplate *template_;
3768         int i, idx;
3769
3770         g_assert (info);
3771
3772         for (i = 0; i < info->num_entries; ++i) {
3773                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3774
3775                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3776                         return i;
3777         }
3778
3779         if (info->num_entries == info->count_entries) {
3780                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3781                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3782
3783                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3784
3785                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3786                 info->entries = new_entries;
3787                 info->count_entries = new_count_entries;
3788         }
3789
3790         idx = info->num_entries;
3791         template_ = &info->entries [idx];
3792         template_->info_type = rgctx_type;
3793         template_->data = data;
3794
3795         info->num_entries ++;
3796
3797         return idx;
3798 }
3799
3800 /*
3801  * emit_get_gsharedvt_info:
3802  *
3803  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3804  */
3805 static MonoInst*
3806 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3807 {
3808         MonoInst *ins;
3809         int idx, dreg;
3810
3811         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3812         /* Load info->entries [idx] */
3813         dreg = alloc_preg (cfg);
3814         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3815
3816         return ins;
3817 }
3818
3819 static MonoInst*
3820 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3821 {
3822         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3823 }
3824
3825 /*
3826  * On return the caller must check @klass for load errors.
3827  */
3828 static void
3829 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3830 {
3831         MonoInst *vtable_arg;
3832         int context_used;
3833
3834         context_used = mini_class_check_context_used (cfg, klass);
3835
3836         if (context_used) {
3837                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3838                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3839         } else {
3840                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3841
3842                 if (!vtable)
3843                         return;
3844                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3845         }
3846
3847         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3848                 MonoInst *ins;
3849
3850                 /*
3851                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3852                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3853                  */
3854                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3855                 ins->sreg1 = vtable_arg->dreg;
3856                 MONO_ADD_INS (cfg->cbb, ins);
3857         } else {
3858                 static int byte_offset = -1;
3859                 static guint8 bitmask;
3860                 int bits_reg, inited_reg;
3861                 MonoBasicBlock *inited_bb;
3862                 MonoInst *args [16];
3863
3864                 if (byte_offset < 0)
3865                         mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3866
3867                 bits_reg = alloc_ireg (cfg);
3868                 inited_reg = alloc_ireg (cfg);
3869
3870                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3871                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3872
3873                 NEW_BBLOCK (cfg, inited_bb);
3874
3875                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3876                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3877
3878                 args [0] = vtable_arg;
3879                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3880
3881                 MONO_START_BB (cfg, inited_bb);
3882         }
3883 }
3884
3885 static void
3886 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3887 {
3888         MonoInst *ins;
3889
3890         if (cfg->gen_seq_points && cfg->method == method) {
3891                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3892                 if (nonempty_stack)
3893                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3894                 MONO_ADD_INS (cfg->cbb, ins);
3895         }
3896 }
3897
3898 static void
3899 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3900 {
3901         if (mini_get_debug_options ()->better_cast_details) {
3902                 int vtable_reg = alloc_preg (cfg);
3903                 int klass_reg = alloc_preg (cfg);
3904                 MonoBasicBlock *is_null_bb = NULL;
3905                 MonoInst *tls_get;
3906                 int to_klass_reg, context_used;
3907
3908                 if (null_check) {
3909                         NEW_BBLOCK (cfg, is_null_bb);
3910
3911                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3912                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3913                 }
3914
3915                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3916                 if (!tls_get) {
3917                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3918                         exit (1);
3919                 }
3920
3921                 MONO_ADD_INS (cfg->cbb, tls_get);
3922                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3923                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3924
3925                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3926
3927                 context_used = mini_class_check_context_used (cfg, klass);
3928                 if (context_used) {
3929                         MonoInst *class_ins;
3930
3931                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3932                         to_klass_reg = class_ins->dreg;
3933                 } else {
3934                         to_klass_reg = alloc_preg (cfg);
3935                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3936                 }
3937                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3938
3939                 if (null_check)
3940                         MONO_START_BB (cfg, is_null_bb);
3941         }
3942 }
3943
3944 static void
3945 reset_cast_details (MonoCompile *cfg)
3946 {
3947         /* Reset the variables holding the cast details */
3948         if (mini_get_debug_options ()->better_cast_details) {
3949                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3950
3951                 MONO_ADD_INS (cfg->cbb, tls_get);
3952                 /* It is enough to reset the from field */
3953                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3954         }
3955 }
3956
3957 /*
3958  * On return the caller must check @array_class for load errors
3959  */
3960 static void
3961 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3962 {
3963         int vtable_reg = alloc_preg (cfg);
3964         int context_used;
3965
3966         context_used = mini_class_check_context_used (cfg, array_class);
3967
3968         save_cast_details (cfg, array_class, obj->dreg, FALSE);
3969
3970         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3971
3972         if (cfg->opt & MONO_OPT_SHARED) {
3973                 int class_reg = alloc_preg (cfg);
3974                 MonoInst *ins;
3975
3976                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3977                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3978                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3979         } else if (context_used) {
3980                 MonoInst *vtable_ins;
3981
3982                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3983                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3984         } else {
3985                 if (cfg->compile_aot) {
3986                         int vt_reg;
3987                         MonoVTable *vtable;
3988
3989                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3990                                 return;
3991                         vt_reg = alloc_preg (cfg);
3992                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3993                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3994                 } else {
3995                         MonoVTable *vtable;
3996                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3997                                 return;
3998                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3999                 }
4000         }
4001
4002         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
4003
4004         reset_cast_details (cfg);
4005 }
4006
4007 /**
4008  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
4009  * generic code is generated.
4010  */
4011 static MonoInst*
4012 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
4013 {
4014         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
4015
4016         if (context_used) {
4017                 MonoInst *rgctx, *addr;
4018
4019                 /* FIXME: What if the class is shared?  We might not
4020                    have to get the address of the method from the
4021                    RGCTX. */
4022                 addr = emit_get_rgctx_method (cfg, context_used, method,
4023                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4024                 if (cfg->llvm_only && cfg->gsharedvt) {
4025                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4026                 } else {
4027                         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4028
4029                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4030                 }
4031         } else {
4032                 gboolean pass_vtable, pass_mrgctx;
4033                 MonoInst *rgctx_arg = NULL;
4034
4035                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4036                 g_assert (!pass_mrgctx);
4037
4038                 if (pass_vtable) {
4039                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4040
4041                         g_assert (vtable);
4042                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4043                 }
4044
4045                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4046         }
4047 }
4048
4049 static MonoInst*
4050 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
4051 {
4052         MonoInst *add;
4053         int obj_reg;
4054         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
4055         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
4056         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
4057         int rank_reg = alloc_dreg (cfg ,STACK_I4);
4058
4059         obj_reg = sp [0]->dreg;
4060         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4061         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4062
4063         /* FIXME: generics */
4064         g_assert (klass->rank == 0);
4065
4066         // Check rank == 0
4067         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
4068         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4069
4070         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4071         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
4072
4073         if (context_used) {
4074                 MonoInst *element_class;
4075
4076                 /* This assertion is from the unboxcast insn */
4077                 g_assert (klass->rank == 0);
4078
4079                 element_class = emit_get_rgctx_klass (cfg, context_used,
4080                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
4081
4082                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
4083                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4084         } else {
4085                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
4086                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
4087                 reset_cast_details (cfg);
4088         }
4089
4090         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
4091         MONO_ADD_INS (cfg->cbb, add);
4092         add->type = STACK_MP;
4093         add->klass = klass;
4094
4095         return add;
4096 }
4097
4098 static MonoInst*
4099 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
4100 {
4101         MonoInst *addr, *klass_inst, *is_ref, *args[16];
4102         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4103         MonoInst *ins;
4104         int dreg, addr_reg;
4105
4106         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
4107
4108         /* obj */
4109         args [0] = obj;
4110
4111         /* klass */
4112         args [1] = klass_inst;
4113
4114         /* CASTCLASS */
4115         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
4116
4117         NEW_BBLOCK (cfg, is_ref_bb);
4118         NEW_BBLOCK (cfg, is_nullable_bb);
4119         NEW_BBLOCK (cfg, end_bb);
4120         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4121         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4122         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4123
4124         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4125         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4126
4127         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
4128         addr_reg = alloc_dreg (cfg, STACK_MP);
4129
4130         /* Non-ref case */
4131         /* UNBOX */
4132         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
4133         MONO_ADD_INS (cfg->cbb, addr);
4134
4135         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4136
4137         /* Ref case */
4138         MONO_START_BB (cfg, is_ref_bb);
4139
4140         /* Save the ref to a temporary */
4141         dreg = alloc_ireg (cfg);
4142         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
4143         addr->dreg = addr_reg;
4144         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
4145         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4146
4147         /* Nullable case */
4148         MONO_START_BB (cfg, is_nullable_bb);
4149
4150         {
4151                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
4152                 MonoInst *unbox_call;
4153                 MonoMethodSignature *unbox_sig;
4154
4155                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4156                 unbox_sig->ret = &klass->byval_arg;
4157                 unbox_sig->param_count = 1;
4158                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
4159
4160                 if (cfg->llvm_only)
4161                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
4162                 else
4163                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
4164
4165                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
4166                 addr->dreg = addr_reg;
4167         }
4168
4169         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4170
4171         /* End */
4172         MONO_START_BB (cfg, end_bb);
4173
4174         /* LDOBJ */
4175         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
4176
4177         return ins;
4178 }
4179
4180 /*
4181  * Returns NULL and set the cfg exception on error.
4182  */
4183 static MonoInst*
4184 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4185 {
4186         MonoInst *iargs [2];
4187         void *alloc_ftn;
4188
4189         if (context_used) {
4190                 MonoInst *data;
4191                 MonoRgctxInfoType rgctx_info;
4192                 MonoInst *iargs [2];
4193                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4194
4195                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4196
4197                 if (cfg->opt & MONO_OPT_SHARED)
4198                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4199                 else
4200                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4201                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4202
4203                 if (cfg->opt & MONO_OPT_SHARED) {
4204                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4205                         iargs [1] = data;
4206                         alloc_ftn = ves_icall_object_new;
4207                 } else {
4208                         iargs [0] = data;
4209                         alloc_ftn = ves_icall_object_new_specific;
4210                 }
4211
4212                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4213                         if (known_instance_size) {
4214                                 int size = mono_class_instance_size (klass);
4215                                 if (size < sizeof (MonoObject))
4216                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4217
4218                                 EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4219                         }
4220                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4221                 }
4222
4223                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4224         }
4225
4226         if (cfg->opt & MONO_OPT_SHARED) {
4227                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4228                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4229
4230                 alloc_ftn = ves_icall_object_new;
4231         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
4232                 /* This happens often in argument checking code, eg. throw new FooException... */
4233                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4234                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4235                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4236         } else {
4237                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4238                 MonoMethod *managed_alloc = NULL;
4239                 gboolean pass_lw;
4240
4241                 if (!vtable) {
4242                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4243                         cfg->exception_ptr = klass;
4244                         return NULL;
4245                 }
4246
4247                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4248
4249                 if (managed_alloc) {
4250                         int size = mono_class_instance_size (klass);
4251                         if (size < sizeof (MonoObject))
4252                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4253
4254                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4255                         EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4256                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4257                 }
4258                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4259                 if (pass_lw) {
4260                         guint32 lw = vtable->klass->instance_size;
4261                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4262                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4263                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4264                 }
4265                 else {
4266                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4267                 }
4268         }
4269
4270         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4271 }
4272
4273 /*
4274  * Returns NULL and set the cfg exception on error.
4275  */
4276 static MonoInst*
4277 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4278 {
4279         MonoInst *alloc, *ins;
4280
4281         if (mono_class_is_nullable (klass)) {
4282                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4283
4284                 if (context_used) {
4285                         if (cfg->llvm_only && cfg->gsharedvt) {
4286                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4287                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4288                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4289                         } else {
4290                                 /* FIXME: What if the class is shared?  We might not
4291                                    have to get the method address from the RGCTX. */
4292                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4293                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4294                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4295
4296                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4297                         }
4298                 } else {
4299                         gboolean pass_vtable, pass_mrgctx;
4300                         MonoInst *rgctx_arg = NULL;
4301
4302                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4303                         g_assert (!pass_mrgctx);
4304
4305                         if (pass_vtable) {
4306                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4307
4308                                 g_assert (vtable);
4309                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4310                         }
4311
4312                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4313                 }
4314         }
4315
4316         if (mini_is_gsharedvt_klass (klass)) {
4317                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4318                 MonoInst *res, *is_ref, *src_var, *addr;
4319                 int dreg;
4320
4321                 dreg = alloc_ireg (cfg);
4322
4323                 NEW_BBLOCK (cfg, is_ref_bb);
4324                 NEW_BBLOCK (cfg, is_nullable_bb);
4325                 NEW_BBLOCK (cfg, end_bb);
4326                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4327                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4328                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4329
4330                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4331                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4332
4333                 /* Non-ref case */
4334                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4335                 if (!alloc)
4336                         return NULL;
4337                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4338                 ins->opcode = OP_STOREV_MEMBASE;
4339
4340                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4341                 res->type = STACK_OBJ;
4342                 res->klass = klass;
4343                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4344
4345                 /* Ref case */
4346                 MONO_START_BB (cfg, is_ref_bb);
4347
4348                 /* val is a vtype, so has to load the value manually */
4349                 src_var = get_vreg_to_inst (cfg, val->dreg);
4350                 if (!src_var)
4351                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4352                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4353                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4354                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4355
4356                 /* Nullable case */
4357                 MONO_START_BB (cfg, is_nullable_bb);
4358
4359                 {
4360                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4361                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4362                         MonoInst *box_call;
4363                         MonoMethodSignature *box_sig;
4364
4365                         /*
4366                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4367                          * construct that method at JIT time, so have to do things by hand.
4368                          */
4369                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4370                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4371                         box_sig->param_count = 1;
4372                         box_sig->params [0] = &klass->byval_arg;
4373
4374                         if (cfg->llvm_only)
4375                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4376                         else
4377                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4378                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4379                         res->type = STACK_OBJ;
4380                         res->klass = klass;
4381                 }
4382
4383                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4384
4385                 MONO_START_BB (cfg, end_bb);
4386
4387                 return res;
4388         } else {
4389                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4390                 if (!alloc)
4391                         return NULL;
4392
4393                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4394                 return alloc;
4395         }
4396 }
4397
4398 static gboolean
4399 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4400 {
4401         int i;
4402         MonoGenericContainer *container;
4403         MonoGenericInst *ginst;
4404
4405         if (klass->generic_class) {
4406                 container = klass->generic_class->container_class->generic_container;
4407                 ginst = klass->generic_class->context.class_inst;
4408         } else if (klass->generic_container && context_used) {
4409                 container = klass->generic_container;
4410                 ginst = container->context.class_inst;
4411         } else {
4412                 return FALSE;
4413         }
4414
4415         for (i = 0; i < container->type_argc; ++i) {
4416                 MonoType *type;
4417                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4418                         continue;
4419                 type = ginst->type_argv [i];
4420                 if (mini_type_is_reference (type))
4421                         return TRUE;
4422         }
4423         return FALSE;
4424 }
4425
4426 static GHashTable* direct_icall_type_hash;
4427
4428 static gboolean
4429 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4430 {
4431         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4432         if (!direct_icalls_enabled (cfg))
4433                 return FALSE;
4434
4435         /*
4436          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4437          * Whitelist a few icalls for now.
4438          */
4439         if (!direct_icall_type_hash) {
4440                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4441
4442                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4443                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4444                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4445                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4446                 mono_memory_barrier ();
4447                 direct_icall_type_hash = h;
4448         }
4449
4450         if (cmethod->klass == mono_defaults.math_class)
4451                 return TRUE;
4452         /* No locking needed */
4453         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4454                 return TRUE;
4455         return FALSE;
4456 }
4457
4458 #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)
4459
4460 static MonoInst*
4461 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4462 {
4463         MonoMethod *mono_castclass;
4464         MonoInst *res;
4465
4466         mono_castclass = mono_marshal_get_castclass_with_cache ();
4467
4468         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4469         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4470         reset_cast_details (cfg);
4471
4472         return res;
4473 }
4474
4475 static int
4476 get_castclass_cache_idx (MonoCompile *cfg)
4477 {
4478         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4479         cfg->castclass_cache_index ++;
4480         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4481 }
4482
4483 static MonoInst*
4484 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4485 {
4486         MonoInst *args [3];
4487         int idx;
4488
4489         /* obj */
4490         args [0] = obj;
4491
4492         /* klass */
4493         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4494
4495         /* inline cache*/
4496         idx = get_castclass_cache_idx (cfg);
4497         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4498
4499         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4500         return emit_castclass_with_cache (cfg, klass, args);
4501 }
4502
4503 /*
4504  * Returns NULL and set the cfg exception on error.
4505  */
4506 static MonoInst*
4507 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, guint8 *ip, int *inline_costs)
4508 {
4509         MonoBasicBlock *is_null_bb;
4510         int obj_reg = src->dreg;
4511         int vtable_reg = alloc_preg (cfg);
4512         int context_used;
4513         MonoInst *klass_inst = NULL, *res;
4514
4515         context_used = mini_class_check_context_used (cfg, klass);
4516
4517         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4518                 res = emit_castclass_with_cache_nonshared (cfg, src, klass);
4519                 (*inline_costs) += 2;
4520                 return res;
4521         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4522                 MonoMethod *mono_castclass;
4523                 MonoInst *iargs [1];
4524                 int costs;
4525
4526                 mono_castclass = mono_marshal_get_castclass (klass);
4527                 iargs [0] = src;
4528
4529                 save_cast_details (cfg, klass, src->dreg, TRUE);
4530                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4531                                                            iargs, ip, cfg->real_offset, TRUE);
4532                 reset_cast_details (cfg);
4533                 CHECK_CFG_EXCEPTION;
4534                 g_assert (costs > 0);
4535
4536                 cfg->real_offset += 5;
4537
4538                 (*inline_costs) += costs;
4539
4540                 return src;
4541         }
4542
4543         if (context_used) {
4544                 MonoInst *args [3];
4545
4546                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4547                         MonoInst *cache_ins;
4548
4549                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4550
4551                         /* obj */
4552                         args [0] = src;
4553
4554                         /* klass - it's the second element of the cache entry*/
4555                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4556
4557                         /* cache */
4558                         args [2] = cache_ins;
4559
4560                         return emit_castclass_with_cache (cfg, klass, args);
4561                 }
4562
4563                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4564         }
4565
4566         NEW_BBLOCK (cfg, is_null_bb);
4567
4568         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4569         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4570
4571         save_cast_details (cfg, klass, obj_reg, FALSE);
4572
4573         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4574                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4575                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4576         } else {
4577                 int klass_reg = alloc_preg (cfg);
4578
4579                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4580
4581                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4582                         /* the remoting code is broken, access the class for now */
4583                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4584                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4585                                 if (!vt) {
4586                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4587                                         cfg->exception_ptr = klass;
4588                                         return NULL;
4589                                 }
4590                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4591                         } else {
4592                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4593                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4594                         }
4595                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4596                 } else {
4597                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4598                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4599                 }
4600         }
4601
4602         MONO_START_BB (cfg, is_null_bb);
4603
4604         reset_cast_details (cfg);
4605
4606         return src;
4607
4608 exception_exit:
4609         return NULL;
4610 }
4611
4612 /*
4613  * Returns NULL and set the cfg exception on error.
4614  */
4615 static MonoInst*
4616 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4617 {
4618         MonoInst *ins;
4619         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4620         int obj_reg = src->dreg;
4621         int vtable_reg = alloc_preg (cfg);
4622         int res_reg = alloc_ireg_ref (cfg);
4623         MonoInst *klass_inst = NULL;
4624
4625         if (context_used) {
4626                 MonoInst *args [3];
4627
4628                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4629                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4630                         MonoInst *cache_ins;
4631
4632                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4633
4634                         /* obj */
4635                         args [0] = src;
4636
4637                         /* klass - it's the second element of the cache entry*/
4638                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4639
4640                         /* cache */
4641                         args [2] = cache_ins;
4642
4643                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4644                 }
4645
4646                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4647         }
4648
4649         NEW_BBLOCK (cfg, is_null_bb);
4650         NEW_BBLOCK (cfg, false_bb);
4651         NEW_BBLOCK (cfg, end_bb);
4652
4653         /* Do the assignment at the beginning, so the other assignment can be if converted */
4654         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4655         ins->type = STACK_OBJ;
4656         ins->klass = klass;
4657
4658         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4659         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4660
4661         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4662
4663         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4664                 g_assert (!context_used);
4665                 /* the is_null_bb target simply copies the input register to the output */
4666                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4667         } else {
4668                 int klass_reg = alloc_preg (cfg);
4669
4670                 if (klass->rank) {
4671                         int rank_reg = alloc_preg (cfg);
4672                         int eclass_reg = alloc_preg (cfg);
4673
4674                         g_assert (!context_used);
4675                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4676                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4677                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4678                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4679                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4680                         if (klass->cast_class == mono_defaults.object_class) {
4681                                 int parent_reg = alloc_preg (cfg);
4682                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4683                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4684                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4685                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4686                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4687                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4688                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4689                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4690                         } else if (klass->cast_class == mono_defaults.enum_class) {
4691                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4692                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4693                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4694                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4695                         } else {
4696                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4697                                         /* Check that the object is a vector too */
4698                                         int bounds_reg = alloc_preg (cfg);
4699                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4700                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4701                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4702                                 }
4703
4704                                 /* the is_null_bb target simply copies the input register to the output */
4705                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4706                         }
4707                 } else if (mono_class_is_nullable (klass)) {
4708                         g_assert (!context_used);
4709                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4710                         /* the is_null_bb target simply copies the input register to the output */
4711                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4712                 } else {
4713                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4714                                 g_assert (!context_used);
4715                                 /* the remoting code is broken, access the class for now */
4716                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4717                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4718                                         if (!vt) {
4719                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4720                                                 cfg->exception_ptr = klass;
4721                                                 return NULL;
4722                                         }
4723                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4724                                 } else {
4725                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4726                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4727                                 }
4728                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4729                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4730                         } else {
4731                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4732                                 /* the is_null_bb target simply copies the input register to the output */
4733                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4734                         }
4735                 }
4736         }
4737
4738         MONO_START_BB (cfg, false_bb);
4739
4740         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4741         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4742
4743         MONO_START_BB (cfg, is_null_bb);
4744
4745         MONO_START_BB (cfg, end_bb);
4746
4747         return ins;
4748 }
4749
4750 static MonoInst*
4751 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4752 {
4753         /* This opcode takes as input an object reference and a class, and returns:
4754         0) if the object is an instance of the class,
4755         1) if the object is not instance of the class,
4756         2) if the object is a proxy whose type cannot be determined */
4757
4758         MonoInst *ins;
4759 #ifndef DISABLE_REMOTING
4760         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4761 #else
4762         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4763 #endif
4764         int obj_reg = src->dreg;
4765         int dreg = alloc_ireg (cfg);
4766         int tmp_reg;
4767 #ifndef DISABLE_REMOTING
4768         int klass_reg = alloc_preg (cfg);
4769 #endif
4770
4771         NEW_BBLOCK (cfg, true_bb);
4772         NEW_BBLOCK (cfg, false_bb);
4773         NEW_BBLOCK (cfg, end_bb);
4774 #ifndef DISABLE_REMOTING
4775         NEW_BBLOCK (cfg, false2_bb);
4776         NEW_BBLOCK (cfg, no_proxy_bb);
4777 #endif
4778
4779         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4780         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4781
4782         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4783 #ifndef DISABLE_REMOTING
4784                 NEW_BBLOCK (cfg, interface_fail_bb);
4785 #endif
4786
4787                 tmp_reg = alloc_preg (cfg);
4788                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4789 #ifndef DISABLE_REMOTING
4790                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4791                 MONO_START_BB (cfg, interface_fail_bb);
4792                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4793
4794                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4795
4796                 tmp_reg = alloc_preg (cfg);
4797                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4798                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4799                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4800 #else
4801                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4802 #endif
4803         } else {
4804 #ifndef DISABLE_REMOTING
4805                 tmp_reg = alloc_preg (cfg);
4806                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4807                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4808
4809                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4810                 tmp_reg = alloc_preg (cfg);
4811                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4812                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4813
4814                 tmp_reg = alloc_preg (cfg);
4815                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4816                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4817                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4818
4819                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4820                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4821
4822                 MONO_START_BB (cfg, no_proxy_bb);
4823
4824                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4825 #else
4826                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4827 #endif
4828         }
4829
4830         MONO_START_BB (cfg, false_bb);
4831
4832         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4833         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4834
4835 #ifndef DISABLE_REMOTING
4836         MONO_START_BB (cfg, false2_bb);
4837
4838         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4839         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4840 #endif
4841
4842         MONO_START_BB (cfg, true_bb);
4843
4844         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4845
4846         MONO_START_BB (cfg, end_bb);
4847
4848         /* FIXME: */
4849         MONO_INST_NEW (cfg, ins, OP_ICONST);
4850         ins->dreg = dreg;
4851         ins->type = STACK_I4;
4852
4853         return ins;
4854 }
4855
4856 static MonoInst*
4857 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4858 {
4859         /* This opcode takes as input an object reference and a class, and returns:
4860         0) if the object is an instance of the class,
4861         1) if the object is a proxy whose type cannot be determined
4862         an InvalidCastException exception is thrown otherwhise*/
4863
4864         MonoInst *ins;
4865 #ifndef DISABLE_REMOTING
4866         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4867 #else
4868         MonoBasicBlock *ok_result_bb;
4869 #endif
4870         int obj_reg = src->dreg;
4871         int dreg = alloc_ireg (cfg);
4872         int tmp_reg = alloc_preg (cfg);
4873
4874 #ifndef DISABLE_REMOTING
4875         int klass_reg = alloc_preg (cfg);
4876         NEW_BBLOCK (cfg, end_bb);
4877 #endif
4878
4879         NEW_BBLOCK (cfg, ok_result_bb);
4880
4881         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4882         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4883
4884         save_cast_details (cfg, klass, obj_reg, FALSE);
4885
4886         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4887 #ifndef DISABLE_REMOTING
4888                 NEW_BBLOCK (cfg, interface_fail_bb);
4889
4890                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4891                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4892                 MONO_START_BB (cfg, interface_fail_bb);
4893                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4894
4895                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4896
4897                 tmp_reg = alloc_preg (cfg);
4898                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4899                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4900                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4901
4902                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4903                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4904 #else
4905                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4906                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4907                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4908 #endif
4909         } else {
4910 #ifndef DISABLE_REMOTING
4911                 NEW_BBLOCK (cfg, no_proxy_bb);
4912
4913                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4914                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4915                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4916
4917                 tmp_reg = alloc_preg (cfg);
4918                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4919                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4920
4921                 tmp_reg = alloc_preg (cfg);
4922                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4923                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4924                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4925
4926                 NEW_BBLOCK (cfg, fail_1_bb);
4927
4928                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4929
4930                 MONO_START_BB (cfg, fail_1_bb);
4931
4932                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4933                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4934
4935                 MONO_START_BB (cfg, no_proxy_bb);
4936
4937                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4938 #else
4939                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4940 #endif
4941         }
4942
4943         MONO_START_BB (cfg, ok_result_bb);
4944
4945         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4946
4947 #ifndef DISABLE_REMOTING
4948         MONO_START_BB (cfg, end_bb);
4949 #endif
4950
4951         /* FIXME: */
4952         MONO_INST_NEW (cfg, ins, OP_ICONST);
4953         ins->dreg = dreg;
4954         ins->type = STACK_I4;
4955
4956         return ins;
4957 }
4958
4959 static G_GNUC_UNUSED MonoInst*
4960 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4961 {
4962         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4963         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4964         gboolean is_i4;
4965
4966         switch (enum_type->type) {
4967         case MONO_TYPE_I8:
4968         case MONO_TYPE_U8:
4969 #if SIZEOF_REGISTER == 8
4970         case MONO_TYPE_I:
4971         case MONO_TYPE_U:
4972 #endif
4973                 is_i4 = FALSE;
4974                 break;
4975         default:
4976                 is_i4 = TRUE;
4977                 break;
4978         }
4979
4980         {
4981                 MonoInst *load, *and_, *cmp, *ceq;
4982                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4983                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4984                 int dest_reg = alloc_ireg (cfg);
4985
4986                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4987                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4988                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4989                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4990
4991                 ceq->type = STACK_I4;
4992
4993                 if (!is_i4) {
4994                         load = mono_decompose_opcode (cfg, load);
4995                         and_ = mono_decompose_opcode (cfg, and_);
4996                         cmp = mono_decompose_opcode (cfg, cmp);
4997                         ceq = mono_decompose_opcode (cfg, ceq);
4998                 }
4999
5000                 return ceq;
5001         }
5002 }
5003
5004 /*
5005  * Returns NULL and set the cfg exception on error.
5006  */
5007 static G_GNUC_UNUSED MonoInst*
5008 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5009 {
5010         MonoInst *ptr;
5011         int dreg;
5012         gpointer trampoline;
5013         MonoInst *obj, *method_ins, *tramp_ins;
5014         MonoDomain *domain;
5015         guint8 **code_slot;
5016
5017         if (virtual_ && !cfg->llvm_only) {
5018                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5019                 g_assert (invoke);
5020
5021                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5022                         return NULL;
5023         }
5024
5025         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5026         if (!obj)
5027                 return NULL;
5028
5029         /* Inline the contents of mono_delegate_ctor */
5030
5031         /* Set target field */
5032         /* Optimize away setting of NULL target */
5033         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5034                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5035                 if (cfg->gen_write_barriers) {
5036                         dreg = alloc_preg (cfg);
5037                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5038                         emit_write_barrier (cfg, ptr, target);
5039                 }
5040         }
5041
5042         /* Set method field */
5043         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5044         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5045
5046         /*
5047          * To avoid looking up the compiled code belonging to the target method
5048          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5049          * store it, and we fill it after the method has been compiled.
5050          */
5051         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5052                 MonoInst *code_slot_ins;
5053
5054                 if (context_used) {
5055                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5056                 } else {
5057                         domain = mono_domain_get ();
5058                         mono_domain_lock (domain);
5059                         if (!domain_jit_info (domain)->method_code_hash)
5060                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5061                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5062                         if (!code_slot) {
5063                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5064                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5065                         }
5066                         mono_domain_unlock (domain);
5067
5068                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5069                 }
5070                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5071         }
5072
5073         if (cfg->llvm_only) {
5074                 MonoInst *args [16];
5075
5076                 if (virtual_) {
5077                         args [0] = obj;
5078                         args [1] = target;
5079                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5080                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5081                 } else {
5082                         args [0] = obj;
5083                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5084                 }
5085
5086                 return obj;
5087         }
5088
5089         if (cfg->compile_aot) {
5090                 MonoDelegateClassMethodPair *del_tramp;
5091
5092                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5093                 del_tramp->klass = klass;
5094                 del_tramp->method = context_used ? NULL : method;
5095                 del_tramp->is_virtual = virtual_;
5096                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5097         } else {
5098                 if (virtual_)
5099                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5100                 else
5101                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5102                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5103         }
5104
5105         /* Set invoke_impl field */
5106         if (virtual_) {
5107                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5108         } else {
5109                 dreg = alloc_preg (cfg);
5110                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5111                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5112
5113                 dreg = alloc_preg (cfg);
5114                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5115                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5116         }
5117
5118         dreg = alloc_preg (cfg);
5119         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5120         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5121
5122         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5123
5124         return obj;
5125 }
5126
5127 static MonoInst*
5128 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5129 {
5130         MonoJitICallInfo *info;
5131
5132         /* Need to register the icall so it gets an icall wrapper */
5133         info = mono_get_array_new_va_icall (rank);
5134
5135         cfg->flags |= MONO_CFG_HAS_VARARGS;
5136
5137         /* mono_array_new_va () needs a vararg calling convention */
5138         cfg->exception_message = g_strdup ("array-new");
5139         cfg->disable_llvm = TRUE;
5140
5141         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5142         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5143 }
5144
5145 /*
5146  * handle_constrained_gsharedvt_call:
5147  *
5148  *   Handle constrained calls where the receiver is a gsharedvt type.
5149  * Return the instruction representing the call. Set the cfg exception on failure.
5150  */
5151 static MonoInst*
5152 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5153                                                                    gboolean *ref_emit_widen)
5154 {
5155         MonoInst *ins = NULL;
5156         gboolean emit_widen = *ref_emit_widen;
5157
5158         /*
5159          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5160          * 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
5161          * pack the arguments into an array, and do the rest of the work in in an icall.
5162          */
5163         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5164                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mini_is_gsharedvt_type (fsig->ret)) &&
5165                 (fsig->param_count == 0 || (!fsig->hasthis && fsig->param_count == 1) || (fsig->param_count == 1 && (MONO_TYPE_IS_REFERENCE (fsig->params [0]) || fsig->params [0]->byref || mini_is_gsharedvt_type (fsig->params [0]))))) {
5166                 MonoInst *args [16];
5167
5168                 /*
5169                  * This case handles calls to
5170                  * - object:ToString()/Equals()/GetHashCode(),
5171                  * - System.IComparable<T>:CompareTo()
5172                  * - System.IEquatable<T>:Equals ()
5173                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5174                  */
5175
5176                 args [0] = sp [0];
5177                 if (mono_method_check_context_used (cmethod))
5178                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5179                 else
5180                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5181                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5182
5183                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5184                 if (fsig->hasthis && fsig->param_count) {
5185                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5186                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5187                         ins->dreg = alloc_preg (cfg);
5188                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5189                         MONO_ADD_INS (cfg->cbb, ins);
5190                         args [4] = ins;
5191
5192                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5193                                 int addr_reg, deref_arg_reg;
5194
5195                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5196                                 deref_arg_reg = alloc_preg (cfg);
5197                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5198                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5199
5200                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5201                                 addr_reg = ins->dreg;
5202                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5203                         } else {
5204                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5205                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5206                         }
5207                 } else {
5208                         EMIT_NEW_ICONST (cfg, args [3], 0);
5209                         EMIT_NEW_ICONST (cfg, args [4], 0);
5210                 }
5211                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5212                 emit_widen = FALSE;
5213
5214                 if (mini_is_gsharedvt_type (fsig->ret)) {
5215                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5216                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5217                         MonoInst *add;
5218
5219                         /* Unbox */
5220                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5221                         MONO_ADD_INS (cfg->cbb, add);
5222                         /* Load value */
5223                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5224                         MONO_ADD_INS (cfg->cbb, ins);
5225                         /* ins represents the call result */
5226                 }
5227         } else {
5228                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5229         }
5230
5231         *ref_emit_widen = emit_widen;
5232
5233         return ins;
5234
5235  exception_exit:
5236         return NULL;
5237 }
5238
5239 static void
5240 mono_emit_load_got_addr (MonoCompile *cfg)
5241 {
5242         MonoInst *getaddr, *dummy_use;
5243
5244         if (!cfg->got_var || cfg->got_var_allocated)
5245                 return;
5246
5247         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5248         getaddr->cil_code = cfg->header->code;
5249         getaddr->dreg = cfg->got_var->dreg;
5250
5251         /* Add it to the start of the first bblock */
5252         if (cfg->bb_entry->code) {
5253                 getaddr->next = cfg->bb_entry->code;
5254                 cfg->bb_entry->code = getaddr;
5255         }
5256         else
5257                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5258
5259         cfg->got_var_allocated = TRUE;
5260
5261         /*
5262          * Add a dummy use to keep the got_var alive, since real uses might
5263          * only be generated by the back ends.
5264          * Add it to end_bblock, so the variable's lifetime covers the whole
5265          * method.
5266          * It would be better to make the usage of the got var explicit in all
5267          * cases when the backend needs it (i.e. calls, throw etc.), so this
5268          * wouldn't be needed.
5269          */
5270         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5271         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5272 }
5273
5274 static int inline_limit;
5275 static gboolean inline_limit_inited;
5276
5277 static gboolean
5278 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5279 {
5280         MonoMethodHeaderSummary header;
5281         MonoVTable *vtable;
5282 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5283         MonoMethodSignature *sig = mono_method_signature (method);
5284         int i;
5285 #endif
5286
5287         if (cfg->disable_inline)
5288                 return FALSE;
5289         if (cfg->gshared)
5290                 return FALSE;
5291
5292         if (cfg->inline_depth > 10)
5293                 return FALSE;
5294
5295         if (!mono_method_get_header_summary (method, &header))
5296                 return FALSE;
5297
5298         /*runtime, icall and pinvoke are checked by summary call*/
5299         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5300             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5301             (mono_class_is_marshalbyref (method->klass)) ||
5302             header.has_clauses)
5303                 return FALSE;
5304
5305         /* also consider num_locals? */
5306         /* Do the size check early to avoid creating vtables */
5307         if (!inline_limit_inited) {
5308                 if (g_getenv ("MONO_INLINELIMIT"))
5309                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5310                 else
5311                         inline_limit = INLINE_LENGTH_LIMIT;
5312                 inline_limit_inited = TRUE;
5313         }
5314         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5315                 return FALSE;
5316
5317         /*
5318          * if we can initialize the class of the method right away, we do,
5319          * otherwise we don't allow inlining if the class needs initialization,
5320          * since it would mean inserting a call to mono_runtime_class_init()
5321          * inside the inlined code
5322          */
5323         if (!(cfg->opt & MONO_OPT_SHARED)) {
5324                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5325                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5326                         vtable = mono_class_vtable (cfg->domain, method->klass);
5327                         if (!vtable)
5328                                 return FALSE;
5329                         if (!cfg->compile_aot) {
5330                                 MonoError error;
5331                                 if (!mono_runtime_class_init_full (vtable, &error))
5332                                         mono_error_raise_exception (&error); /* FIXME don't raise here */
5333                         }
5334                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5335                         if (cfg->run_cctors && method->klass->has_cctor) {
5336                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5337                                 if (!method->klass->runtime_info)
5338                                         /* No vtable created yet */
5339                                         return FALSE;
5340                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5341                                 if (!vtable)
5342                                         return FALSE;
5343                                 /* This makes so that inline cannot trigger */
5344                                 /* .cctors: too many apps depend on them */
5345                                 /* running with a specific order... */
5346                                 if (! vtable->initialized)
5347                                         return FALSE;
5348                                 MonoError error;
5349                                 if (!mono_runtime_class_init_full (vtable, &error))
5350                                         mono_error_raise_exception (&error); /* FIXME don't raise here */
5351                         }
5352                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5353                         if (!method->klass->runtime_info)
5354                                 /* No vtable created yet */
5355                                 return FALSE;
5356                         vtable = mono_class_vtable (cfg->domain, method->klass);
5357                         if (!vtable)
5358                                 return FALSE;
5359                         if (!vtable->initialized)
5360                                 return FALSE;
5361                 }
5362         } else {
5363                 /*
5364                  * If we're compiling for shared code
5365                  * the cctor will need to be run at aot method load time, for example,
5366                  * or at the end of the compilation of the inlining method.
5367                  */
5368                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5369                         return FALSE;
5370         }
5371
5372 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5373         if (mono_arch_is_soft_float ()) {
5374                 /* FIXME: */
5375                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5376                         return FALSE;
5377                 for (i = 0; i < sig->param_count; ++i)
5378                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5379                                 return FALSE;
5380         }
5381 #endif
5382
5383         if (g_list_find (cfg->dont_inline, method))
5384                 return FALSE;
5385
5386         return TRUE;
5387 }
5388
5389 static gboolean
5390 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5391 {
5392         if (!cfg->compile_aot) {
5393                 g_assert (vtable);
5394                 if (vtable->initialized)
5395                         return FALSE;
5396         }
5397
5398         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5399                 if (cfg->method == method)
5400                         return FALSE;
5401         }
5402
5403         if (!mono_class_needs_cctor_run (klass, method))
5404                 return FALSE;
5405
5406         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5407                 /* The initialization is already done before the method is called */
5408                 return FALSE;
5409
5410         return TRUE;
5411 }
5412
5413 static MonoInst*
5414 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5415 {
5416         MonoInst *ins;
5417         guint32 size;
5418         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5419         int context_used;
5420
5421         if (mini_is_gsharedvt_variable_klass (klass)) {
5422                 size = -1;
5423         } else {
5424                 mono_class_init (klass);
5425                 size = mono_class_array_element_size (klass);
5426         }
5427
5428         mult_reg = alloc_preg (cfg);
5429         array_reg = arr->dreg;
5430         index_reg = index->dreg;
5431
5432 #if SIZEOF_REGISTER == 8
5433         /* The array reg is 64 bits but the index reg is only 32 */
5434         if (COMPILE_LLVM (cfg)) {
5435                 /* Not needed */
5436                 index2_reg = index_reg;
5437         } else {
5438                 index2_reg = alloc_preg (cfg);
5439                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5440         }
5441 #else
5442         if (index->type == STACK_I8) {
5443                 index2_reg = alloc_preg (cfg);
5444                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5445         } else {
5446                 index2_reg = index_reg;
5447         }
5448 #endif
5449
5450         if (bcheck)
5451                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5452
5453 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5454         if (size == 1 || size == 2 || size == 4 || size == 8) {
5455                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5456
5457                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5458                 ins->klass = mono_class_get_element_class (klass);
5459                 ins->type = STACK_MP;
5460
5461                 return ins;
5462         }
5463 #endif
5464
5465         add_reg = alloc_ireg_mp (cfg);
5466
5467         if (size == -1) {
5468                 MonoInst *rgctx_ins;
5469
5470                 /* gsharedvt */
5471                 g_assert (cfg->gshared);
5472                 context_used = mini_class_check_context_used (cfg, klass);
5473                 g_assert (context_used);
5474                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5475                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5476         } else {
5477                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5478         }
5479         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5480         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5481         ins->klass = mono_class_get_element_class (klass);
5482         ins->type = STACK_MP;
5483         MONO_ADD_INS (cfg->cbb, ins);
5484
5485         return ins;
5486 }
5487
5488 static MonoInst*
5489 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5490 {
5491         int bounds_reg = alloc_preg (cfg);
5492         int add_reg = alloc_ireg_mp (cfg);
5493         int mult_reg = alloc_preg (cfg);
5494         int mult2_reg = alloc_preg (cfg);
5495         int low1_reg = alloc_preg (cfg);
5496         int low2_reg = alloc_preg (cfg);
5497         int high1_reg = alloc_preg (cfg);
5498         int high2_reg = alloc_preg (cfg);
5499         int realidx1_reg = alloc_preg (cfg);
5500         int realidx2_reg = alloc_preg (cfg);
5501         int sum_reg = alloc_preg (cfg);
5502         int index1, index2, tmpreg;
5503         MonoInst *ins;
5504         guint32 size;
5505
5506         mono_class_init (klass);
5507         size = mono_class_array_element_size (klass);
5508
5509         index1 = index_ins1->dreg;
5510         index2 = index_ins2->dreg;
5511
5512 #if SIZEOF_REGISTER == 8
5513         /* The array reg is 64 bits but the index reg is only 32 */
5514         if (COMPILE_LLVM (cfg)) {
5515                 /* Not needed */
5516         } else {
5517                 tmpreg = alloc_preg (cfg);
5518                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5519                 index1 = tmpreg;
5520                 tmpreg = alloc_preg (cfg);
5521                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5522                 index2 = tmpreg;
5523         }
5524 #else
5525         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5526         tmpreg = -1;
5527 #endif
5528
5529         /* range checking */
5530         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5531                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5532
5533         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5534                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5535         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5536         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5537                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5538         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5539         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5540
5541         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5542                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5543         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5544         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5545                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5546         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5547         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5548
5549         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5550         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5551         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5552         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5553         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5554
5555         ins->type = STACK_MP;
5556         ins->klass = klass;
5557         MONO_ADD_INS (cfg->cbb, ins);
5558
5559         return ins;
5560 }
5561
5562 static MonoInst*
5563 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5564 {
5565         int rank;
5566         MonoInst *addr;
5567         MonoMethod *addr_method;
5568         int element_size;
5569         MonoClass *eclass = cmethod->klass->element_class;
5570
5571         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5572
5573         if (rank == 1)
5574                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5575
5576         /* emit_ldelema_2 depends on OP_LMUL */
5577         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5578                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5579         }
5580
5581         if (mini_is_gsharedvt_variable_klass (eclass))
5582                 element_size = 0;
5583         else
5584                 element_size = mono_class_array_element_size (eclass);
5585         addr_method = mono_marshal_get_array_address (rank, element_size);
5586         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5587
5588         return addr;
5589 }
5590
5591 static MonoBreakPolicy
5592 always_insert_breakpoint (MonoMethod *method)
5593 {
5594         return MONO_BREAK_POLICY_ALWAYS;
5595 }
5596
5597 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5598
5599 /**
5600  * mono_set_break_policy:
5601  * policy_callback: the new callback function
5602  *
5603  * Allow embedders to decide wherther to actually obey breakpoint instructions
5604  * (both break IL instructions and Debugger.Break () method calls), for example
5605  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5606  * untrusted or semi-trusted code.
5607  *
5608  * @policy_callback will be called every time a break point instruction needs to
5609  * be inserted with the method argument being the method that calls Debugger.Break()
5610  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5611  * if it wants the breakpoint to not be effective in the given method.
5612  * #MONO_BREAK_POLICY_ALWAYS is the default.
5613  */
5614 void
5615 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5616 {
5617         if (policy_callback)
5618                 break_policy_func = policy_callback;
5619         else
5620                 break_policy_func = always_insert_breakpoint;
5621 }
5622
5623 static gboolean
5624 should_insert_brekpoint (MonoMethod *method) {
5625         switch (break_policy_func (method)) {
5626         case MONO_BREAK_POLICY_ALWAYS:
5627                 return TRUE;
5628         case MONO_BREAK_POLICY_NEVER:
5629                 return FALSE;
5630         case MONO_BREAK_POLICY_ON_DBG:
5631                 g_warning ("mdb no longer supported");
5632                 return FALSE;
5633         default:
5634                 g_warning ("Incorrect value returned from break policy callback");
5635                 return FALSE;
5636         }
5637 }
5638
5639 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5640 static MonoInst*
5641 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5642 {
5643         MonoInst *addr, *store, *load;
5644         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5645
5646         /* the bounds check is already done by the callers */
5647         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5648         if (is_set) {
5649                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5650                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5651                 if (mini_type_is_reference (fsig->params [2]))
5652                         emit_write_barrier (cfg, addr, load);
5653         } else {
5654                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5655                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5656         }
5657         return store;
5658 }
5659
5660
5661 static gboolean
5662 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5663 {
5664         return mini_type_is_reference (&klass->byval_arg);
5665 }
5666
5667 static MonoInst*
5668 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5669 {
5670         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5671                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5672                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5673                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5674                 MonoInst *iargs [3];
5675
5676                 if (!helper->slot)
5677                         mono_class_setup_vtable (obj_array);
5678                 g_assert (helper->slot);
5679
5680                 if (sp [0]->type != STACK_OBJ)
5681                         return NULL;
5682                 if (sp [2]->type != STACK_OBJ)
5683                         return NULL;
5684
5685                 iargs [2] = sp [2];
5686                 iargs [1] = sp [1];
5687                 iargs [0] = sp [0];
5688
5689                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5690         } else {
5691                 MonoInst *ins;
5692
5693                 if (mini_is_gsharedvt_variable_klass (klass)) {
5694                         MonoInst *addr;
5695
5696                         // FIXME-VT: OP_ICONST optimization
5697                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5698                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5699                         ins->opcode = OP_STOREV_MEMBASE;
5700                 } else if (sp [1]->opcode == OP_ICONST) {
5701                         int array_reg = sp [0]->dreg;
5702                         int index_reg = sp [1]->dreg;
5703                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5704
5705                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5706                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5707
5708                         if (safety_checks)
5709                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5710                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5711                 } else {
5712                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5713                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5714                         if (generic_class_is_reference_type (cfg, klass))
5715                                 emit_write_barrier (cfg, addr, sp [2]);
5716                 }
5717                 return ins;
5718         }
5719 }
5720
5721 static MonoInst*
5722 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5723 {
5724         MonoClass *eklass;
5725
5726         if (is_set)
5727                 eklass = mono_class_from_mono_type (fsig->params [2]);
5728         else
5729                 eklass = mono_class_from_mono_type (fsig->ret);
5730
5731         if (is_set) {
5732                 return emit_array_store (cfg, eklass, args, FALSE);
5733         } else {
5734                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5735                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5736                 return ins;
5737         }
5738 }
5739
5740 static gboolean
5741 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5742 {
5743         uint32_t align;
5744         int param_size, return_size;
5745
5746         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5747         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5748
5749         if (cfg->verbose_level > 3)
5750                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5751
5752         //Don't allow mixing reference types with value types
5753         if (param_klass->valuetype != return_klass->valuetype) {
5754                 if (cfg->verbose_level > 3)
5755                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5756                 return FALSE;
5757         }
5758
5759         if (!param_klass->valuetype) {
5760                 if (cfg->verbose_level > 3)
5761                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5762                 return TRUE;
5763         }
5764
5765         //That are blitable
5766         if (param_klass->has_references || return_klass->has_references)
5767                 return FALSE;
5768
5769         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5770         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5771                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5772                         if (cfg->verbose_level > 3)
5773                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5774                 return FALSE;
5775         }
5776
5777         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5778                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5779                 if (cfg->verbose_level > 3)
5780                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5781                 return FALSE;
5782         }
5783
5784         param_size = mono_class_value_size (param_klass, &align);
5785         return_size = mono_class_value_size (return_klass, &align);
5786
5787         //We can do it if sizes match
5788         if (param_size == return_size) {
5789                 if (cfg->verbose_level > 3)
5790                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5791                 return TRUE;
5792         }
5793
5794         //No simple way to handle struct if sizes don't match
5795         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5796                 if (cfg->verbose_level > 3)
5797                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5798                 return FALSE;
5799         }
5800
5801         /*
5802          * Same reg size category.
5803          * A quick note on why we don't require widening here.
5804          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5805          *
5806          * Since the source value comes from a function argument, the JIT will already have
5807          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5808          */
5809         if (param_size <= 4 && return_size <= 4) {
5810                 if (cfg->verbose_level > 3)
5811                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5812                 return TRUE;
5813         }
5814
5815         return FALSE;
5816 }
5817
5818 static MonoInst*
5819 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5820 {
5821         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5822         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5823
5824         if (mini_is_gsharedvt_variable_type (fsig->ret))
5825                 return NULL;
5826
5827         //Valuetypes that are semantically equivalent or numbers than can be widened to
5828         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5829                 return args [0];
5830
5831         //Arrays of valuetypes that are semantically equivalent
5832         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5833                 return args [0];
5834
5835         return NULL;
5836 }
5837
5838 static MonoInst*
5839 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5840 {
5841 #ifdef MONO_ARCH_SIMD_INTRINSICS
5842         MonoInst *ins = NULL;
5843
5844         if (cfg->opt & MONO_OPT_SIMD) {
5845                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5846                 if (ins)
5847                         return ins;
5848         }
5849 #endif
5850
5851         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5852 }
5853
5854 static MonoInst*
5855 emit_memory_barrier (MonoCompile *cfg, int kind)
5856 {
5857         MonoInst *ins = NULL;
5858         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5859         MONO_ADD_INS (cfg->cbb, ins);
5860         ins->backend.memory_barrier_kind = kind;
5861
5862         return ins;
5863 }
5864
5865 static MonoInst*
5866 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5867 {
5868         MonoInst *ins = NULL;
5869         int opcode = 0;
5870
5871         /* The LLVM backend supports these intrinsics */
5872         if (cmethod->klass == mono_defaults.math_class) {
5873                 if (strcmp (cmethod->name, "Sin") == 0) {
5874                         opcode = OP_SIN;
5875                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5876                         opcode = OP_COS;
5877                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5878                         opcode = OP_SQRT;
5879                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5880                         opcode = OP_ABS;
5881                 }
5882
5883                 if (opcode && fsig->param_count == 1) {
5884                         MONO_INST_NEW (cfg, ins, opcode);
5885                         ins->type = STACK_R8;
5886                         ins->dreg = mono_alloc_freg (cfg);
5887                         ins->sreg1 = args [0]->dreg;
5888                         MONO_ADD_INS (cfg->cbb, ins);
5889                 }
5890
5891                 opcode = 0;
5892                 if (cfg->opt & MONO_OPT_CMOV) {
5893                         if (strcmp (cmethod->name, "Min") == 0) {
5894                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5895                                         opcode = OP_IMIN;
5896                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5897                                         opcode = OP_IMIN_UN;
5898                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5899                                         opcode = OP_LMIN;
5900                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5901                                         opcode = OP_LMIN_UN;
5902                         } else if (strcmp (cmethod->name, "Max") == 0) {
5903                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5904                                         opcode = OP_IMAX;
5905                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5906                                         opcode = OP_IMAX_UN;
5907                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5908                                         opcode = OP_LMAX;
5909                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5910                                         opcode = OP_LMAX_UN;
5911                         }
5912                 }
5913
5914                 if (opcode && fsig->param_count == 2) {
5915                         MONO_INST_NEW (cfg, ins, opcode);
5916                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5917                         ins->dreg = mono_alloc_ireg (cfg);
5918                         ins->sreg1 = args [0]->dreg;
5919                         ins->sreg2 = args [1]->dreg;
5920                         MONO_ADD_INS (cfg->cbb, ins);
5921                 }
5922         }
5923
5924         return ins;
5925 }
5926
5927 static MonoInst*
5928 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5929 {
5930         if (cmethod->klass == mono_defaults.array_class) {
5931                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5932                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5933                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5934                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5935                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5936                         return emit_array_unsafe_mov (cfg, fsig, args);
5937         }
5938
5939         return NULL;
5940 }
5941
5942 static MonoInst*
5943 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5944 {
5945         MonoInst *ins = NULL;
5946
5947          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5948
5949         if (cmethod->klass == mono_defaults.string_class) {
5950                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5951                         int dreg = alloc_ireg (cfg);
5952                         int index_reg = alloc_preg (cfg);
5953                         int add_reg = alloc_preg (cfg);
5954
5955 #if SIZEOF_REGISTER == 8
5956                         if (COMPILE_LLVM (cfg)) {
5957                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5958                         } else {
5959                                 /* The array reg is 64 bits but the index reg is only 32 */
5960                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5961                         }
5962 #else
5963                         index_reg = args [1]->dreg;
5964 #endif
5965                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5966
5967 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5968                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5969                         add_reg = ins->dreg;
5970                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5971                                                                    add_reg, 0);
5972 #else
5973                         int mult_reg = alloc_preg (cfg);
5974                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5975                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5976                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5977                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5978 #endif
5979                         type_from_op (cfg, ins, NULL, NULL);
5980                         return ins;
5981                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5982                         int dreg = alloc_ireg (cfg);
5983                         /* Decompose later to allow more optimizations */
5984                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5985                         ins->type = STACK_I4;
5986                         ins->flags |= MONO_INST_FAULT;
5987                         cfg->cbb->has_array_access = TRUE;
5988                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5989
5990                         return ins;
5991                 } else
5992                         return NULL;
5993         } else if (cmethod->klass == mono_defaults.object_class) {
5994                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5995                         int dreg = alloc_ireg_ref (cfg);
5996                         int vt_reg = alloc_preg (cfg);
5997                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5998                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
5999                         type_from_op (cfg, ins, NULL, NULL);
6000
6001                         return ins;
6002                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6003                         int dreg = alloc_ireg (cfg);
6004                         int t1 = alloc_ireg (cfg);
6005
6006                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6007                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6008                         ins->type = STACK_I4;
6009
6010                         return ins;
6011                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6012                         MONO_INST_NEW (cfg, ins, OP_NOP);
6013                         MONO_ADD_INS (cfg->cbb, ins);
6014                         return ins;
6015                 } else
6016                         return NULL;
6017         } else if (cmethod->klass == mono_defaults.array_class) {
6018                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6019                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6020                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6021                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6022
6023 #ifndef MONO_BIG_ARRAYS
6024                 /*
6025                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6026                  * Array methods.
6027                  */
6028                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6029                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6030                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6031                         int dreg = alloc_ireg (cfg);
6032                         int bounds_reg = alloc_ireg_mp (cfg);
6033                         MonoBasicBlock *end_bb, *szarray_bb;
6034                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6035
6036                         NEW_BBLOCK (cfg, end_bb);
6037                         NEW_BBLOCK (cfg, szarray_bb);
6038
6039                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6040                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6041                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6042                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6043                         /* Non-szarray case */
6044                         if (get_length)
6045                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6046                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6047                         else
6048                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6049                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6050                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6051                         MONO_START_BB (cfg, szarray_bb);
6052                         /* Szarray case */
6053                         if (get_length)
6054                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6055                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6056                         else
6057                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6058                         MONO_START_BB (cfg, end_bb);
6059
6060                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6061                         ins->type = STACK_I4;
6062
6063                         return ins;
6064                 }
6065 #endif
6066
6067                 if (cmethod->name [0] != 'g')
6068                         return NULL;
6069
6070                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6071                         int dreg = alloc_ireg (cfg);
6072                         int vtable_reg = alloc_preg (cfg);
6073                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6074                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6075                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6076                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6077                         type_from_op (cfg, ins, NULL, NULL);
6078
6079                         return ins;
6080                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6081                         int dreg = alloc_ireg (cfg);
6082
6083                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6084                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6085                         type_from_op (cfg, ins, NULL, NULL);
6086
6087                         return ins;
6088                 } else
6089                         return NULL;
6090         } else if (cmethod->klass == runtime_helpers_class) {
6091                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6092                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6093                         return ins;
6094                 } else
6095                         return NULL;
6096         } else if (cmethod->klass == mono_defaults.monitor_class) {
6097                 gboolean is_enter = FALSE;
6098                 gboolean is_v4 = FALSE;
6099
6100                 if (!strcmp (cmethod->name, "enter_with_atomic_var") && mono_method_signature (cmethod)->param_count == 2) {
6101                         is_enter = TRUE;
6102                         is_v4 = TRUE;
6103                 }
6104                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6105                         is_enter = TRUE;
6106
6107                 if (is_enter) {
6108                         /*
6109                          * To make async stack traces work, icalls which can block should have a wrapper.
6110                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6111                          */
6112                         MonoBasicBlock *end_bb;
6113
6114                         NEW_BBLOCK (cfg, end_bb);
6115
6116                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
6117                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6118                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6119                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4 : (gpointer)mono_monitor_enter, args);
6120                         MONO_START_BB (cfg, end_bb);
6121                         return ins;
6122                 }
6123         } else if (cmethod->klass == mono_defaults.thread_class) {
6124                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6125                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6126                         MONO_ADD_INS (cfg->cbb, ins);
6127                         return ins;
6128                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6129                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6130                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6131                         guint32 opcode = 0;
6132                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6133
6134                         if (fsig->params [0]->type == MONO_TYPE_I1)
6135                                 opcode = OP_LOADI1_MEMBASE;
6136                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6137                                 opcode = OP_LOADU1_MEMBASE;
6138                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6139                                 opcode = OP_LOADI2_MEMBASE;
6140                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6141                                 opcode = OP_LOADU2_MEMBASE;
6142                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6143                                 opcode = OP_LOADI4_MEMBASE;
6144                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6145                                 opcode = OP_LOADU4_MEMBASE;
6146                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6147                                 opcode = OP_LOADI8_MEMBASE;
6148                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6149                                 opcode = OP_LOADR4_MEMBASE;
6150                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6151                                 opcode = OP_LOADR8_MEMBASE;
6152                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6153                                 opcode = OP_LOAD_MEMBASE;
6154
6155                         if (opcode) {
6156                                 MONO_INST_NEW (cfg, ins, opcode);
6157                                 ins->inst_basereg = args [0]->dreg;
6158                                 ins->inst_offset = 0;
6159                                 MONO_ADD_INS (cfg->cbb, ins);
6160
6161                                 switch (fsig->params [0]->type) {
6162                                 case MONO_TYPE_I1:
6163                                 case MONO_TYPE_U1:
6164                                 case MONO_TYPE_I2:
6165                                 case MONO_TYPE_U2:
6166                                 case MONO_TYPE_I4:
6167                                 case MONO_TYPE_U4:
6168                                         ins->dreg = mono_alloc_ireg (cfg);
6169                                         ins->type = STACK_I4;
6170                                         break;
6171                                 case MONO_TYPE_I8:
6172                                 case MONO_TYPE_U8:
6173                                         ins->dreg = mono_alloc_lreg (cfg);
6174                                         ins->type = STACK_I8;
6175                                         break;
6176                                 case MONO_TYPE_I:
6177                                 case MONO_TYPE_U:
6178                                         ins->dreg = mono_alloc_ireg (cfg);
6179 #if SIZEOF_REGISTER == 8
6180                                         ins->type = STACK_I8;
6181 #else
6182                                         ins->type = STACK_I4;
6183 #endif
6184                                         break;
6185                                 case MONO_TYPE_R4:
6186                                 case MONO_TYPE_R8:
6187                                         ins->dreg = mono_alloc_freg (cfg);
6188                                         ins->type = STACK_R8;
6189                                         break;
6190                                 default:
6191                                         g_assert (mini_type_is_reference (fsig->params [0]));
6192                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6193                                         ins->type = STACK_OBJ;
6194                                         break;
6195                                 }
6196
6197                                 if (opcode == OP_LOADI8_MEMBASE)
6198                                         ins = mono_decompose_opcode (cfg, ins);
6199
6200                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6201
6202                                 return ins;
6203                         }
6204                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6205                         guint32 opcode = 0;
6206                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6207
6208                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6209                                 opcode = OP_STOREI1_MEMBASE_REG;
6210                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6211                                 opcode = OP_STOREI2_MEMBASE_REG;
6212                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6213                                 opcode = OP_STOREI4_MEMBASE_REG;
6214                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6215                                 opcode = OP_STOREI8_MEMBASE_REG;
6216                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6217                                 opcode = OP_STORER4_MEMBASE_REG;
6218                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6219                                 opcode = OP_STORER8_MEMBASE_REG;
6220                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6221                                 opcode = OP_STORE_MEMBASE_REG;
6222
6223                         if (opcode) {
6224                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6225
6226                                 MONO_INST_NEW (cfg, ins, opcode);
6227                                 ins->sreg1 = args [1]->dreg;
6228                                 ins->inst_destbasereg = args [0]->dreg;
6229                                 ins->inst_offset = 0;
6230                                 MONO_ADD_INS (cfg->cbb, ins);
6231
6232                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6233                                         ins = mono_decompose_opcode (cfg, ins);
6234
6235                                 return ins;
6236                         }
6237                 }
6238         } else if (cmethod->klass->image == mono_defaults.corlib &&
6239                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6240                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6241                 ins = NULL;
6242
6243 #if SIZEOF_REGISTER == 8
6244                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6245                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6246                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6247                                 ins->dreg = mono_alloc_preg (cfg);
6248                                 ins->sreg1 = args [0]->dreg;
6249                                 ins->type = STACK_I8;
6250                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6251                                 MONO_ADD_INS (cfg->cbb, ins);
6252                         } else {
6253                                 MonoInst *load_ins;
6254
6255                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6256
6257                                 /* 64 bit reads are already atomic */
6258                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6259                                 load_ins->dreg = mono_alloc_preg (cfg);
6260                                 load_ins->inst_basereg = args [0]->dreg;
6261                                 load_ins->inst_offset = 0;
6262                                 load_ins->type = STACK_I8;
6263                                 MONO_ADD_INS (cfg->cbb, load_ins);
6264
6265                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6266
6267                                 ins = load_ins;
6268                         }
6269                 }
6270 #endif
6271
6272                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6273                         MonoInst *ins_iconst;
6274                         guint32 opcode = 0;
6275
6276                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6277                                 opcode = OP_ATOMIC_ADD_I4;
6278                                 cfg->has_atomic_add_i4 = TRUE;
6279                         }
6280 #if SIZEOF_REGISTER == 8
6281                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6282                                 opcode = OP_ATOMIC_ADD_I8;
6283 #endif
6284                         if (opcode) {
6285                                 if (!mono_arch_opcode_supported (opcode))
6286                                         return NULL;
6287                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6288                                 ins_iconst->inst_c0 = 1;
6289                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6290                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6291
6292                                 MONO_INST_NEW (cfg, ins, opcode);
6293                                 ins->dreg = mono_alloc_ireg (cfg);
6294                                 ins->inst_basereg = args [0]->dreg;
6295                                 ins->inst_offset = 0;
6296                                 ins->sreg2 = ins_iconst->dreg;
6297                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6298                                 MONO_ADD_INS (cfg->cbb, ins);
6299                         }
6300                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6301                         MonoInst *ins_iconst;
6302                         guint32 opcode = 0;
6303
6304                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6305                                 opcode = OP_ATOMIC_ADD_I4;
6306                                 cfg->has_atomic_add_i4 = TRUE;
6307                         }
6308 #if SIZEOF_REGISTER == 8
6309                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6310                                 opcode = OP_ATOMIC_ADD_I8;
6311 #endif
6312                         if (opcode) {
6313                                 if (!mono_arch_opcode_supported (opcode))
6314                                         return NULL;
6315                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6316                                 ins_iconst->inst_c0 = -1;
6317                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6318                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6319
6320                                 MONO_INST_NEW (cfg, ins, opcode);
6321                                 ins->dreg = mono_alloc_ireg (cfg);
6322                                 ins->inst_basereg = args [0]->dreg;
6323                                 ins->inst_offset = 0;
6324                                 ins->sreg2 = ins_iconst->dreg;
6325                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6326                                 MONO_ADD_INS (cfg->cbb, ins);
6327                         }
6328                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6329                         guint32 opcode = 0;
6330
6331                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6332                                 opcode = OP_ATOMIC_ADD_I4;
6333                                 cfg->has_atomic_add_i4 = TRUE;
6334                         }
6335 #if SIZEOF_REGISTER == 8
6336                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6337                                 opcode = OP_ATOMIC_ADD_I8;
6338 #endif
6339                         if (opcode) {
6340                                 if (!mono_arch_opcode_supported (opcode))
6341                                         return NULL;
6342                                 MONO_INST_NEW (cfg, ins, opcode);
6343                                 ins->dreg = mono_alloc_ireg (cfg);
6344                                 ins->inst_basereg = args [0]->dreg;
6345                                 ins->inst_offset = 0;
6346                                 ins->sreg2 = args [1]->dreg;
6347                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6348                                 MONO_ADD_INS (cfg->cbb, ins);
6349                         }
6350                 }
6351                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6352                         MonoInst *f2i = NULL, *i2f;
6353                         guint32 opcode, f2i_opcode, i2f_opcode;
6354                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6355                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6356
6357                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6358                             fsig->params [0]->type == MONO_TYPE_R4) {
6359                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6360                                 f2i_opcode = OP_MOVE_F_TO_I4;
6361                                 i2f_opcode = OP_MOVE_I4_TO_F;
6362                                 cfg->has_atomic_exchange_i4 = TRUE;
6363                         }
6364 #if SIZEOF_REGISTER == 8
6365                         else if (is_ref ||
6366                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6367                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6368                                  fsig->params [0]->type == MONO_TYPE_I) {
6369                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6370                                 f2i_opcode = OP_MOVE_F_TO_I8;
6371                                 i2f_opcode = OP_MOVE_I8_TO_F;
6372                         }
6373 #else
6374                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6375                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6376                                 cfg->has_atomic_exchange_i4 = TRUE;
6377                         }
6378 #endif
6379                         else
6380                                 return NULL;
6381
6382                         if (!mono_arch_opcode_supported (opcode))
6383                                 return NULL;
6384
6385                         if (is_float) {
6386                                 /* TODO: Decompose these opcodes instead of bailing here. */
6387                                 if (COMPILE_SOFT_FLOAT (cfg))
6388                                         return NULL;
6389
6390                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6391                                 f2i->dreg = mono_alloc_ireg (cfg);
6392                                 f2i->sreg1 = args [1]->dreg;
6393                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6394                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6395                                 MONO_ADD_INS (cfg->cbb, f2i);
6396                         }
6397
6398                         MONO_INST_NEW (cfg, ins, opcode);
6399                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6400                         ins->inst_basereg = args [0]->dreg;
6401                         ins->inst_offset = 0;
6402                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6403                         MONO_ADD_INS (cfg->cbb, ins);
6404
6405                         switch (fsig->params [0]->type) {
6406                         case MONO_TYPE_I4:
6407                                 ins->type = STACK_I4;
6408                                 break;
6409                         case MONO_TYPE_I8:
6410                                 ins->type = STACK_I8;
6411                                 break;
6412                         case MONO_TYPE_I:
6413 #if SIZEOF_REGISTER == 8
6414                                 ins->type = STACK_I8;
6415 #else
6416                                 ins->type = STACK_I4;
6417 #endif
6418                                 break;
6419                         case MONO_TYPE_R4:
6420                         case MONO_TYPE_R8:
6421                                 ins->type = STACK_R8;
6422                                 break;
6423                         default:
6424                                 g_assert (mini_type_is_reference (fsig->params [0]));
6425                                 ins->type = STACK_OBJ;
6426                                 break;
6427                         }
6428
6429                         if (is_float) {
6430                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6431                                 i2f->dreg = mono_alloc_freg (cfg);
6432                                 i2f->sreg1 = ins->dreg;
6433                                 i2f->type = STACK_R8;
6434                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6435                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6436                                 MONO_ADD_INS (cfg->cbb, i2f);
6437
6438                                 ins = i2f;
6439                         }
6440
6441                         if (cfg->gen_write_barriers && is_ref)
6442                                 emit_write_barrier (cfg, args [0], args [1]);
6443                 }
6444                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6445                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6446                         guint32 opcode, f2i_opcode, i2f_opcode;
6447                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6448                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6449
6450                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6451                             fsig->params [1]->type == MONO_TYPE_R4) {
6452                                 opcode = OP_ATOMIC_CAS_I4;
6453                                 f2i_opcode = OP_MOVE_F_TO_I4;
6454                                 i2f_opcode = OP_MOVE_I4_TO_F;
6455                                 cfg->has_atomic_cas_i4 = TRUE;
6456                         }
6457 #if SIZEOF_REGISTER == 8
6458                         else if (is_ref ||
6459                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6460                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6461                                  fsig->params [1]->type == MONO_TYPE_I) {
6462                                 opcode = OP_ATOMIC_CAS_I8;
6463                                 f2i_opcode = OP_MOVE_F_TO_I8;
6464                                 i2f_opcode = OP_MOVE_I8_TO_F;
6465                         }
6466 #else
6467                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6468                                 opcode = OP_ATOMIC_CAS_I4;
6469                                 cfg->has_atomic_cas_i4 = TRUE;
6470                         }
6471 #endif
6472                         else
6473                                 return NULL;
6474
6475                         if (!mono_arch_opcode_supported (opcode))
6476                                 return NULL;
6477
6478                         if (is_float) {
6479                                 /* TODO: Decompose these opcodes instead of bailing here. */
6480                                 if (COMPILE_SOFT_FLOAT (cfg))
6481                                         return NULL;
6482
6483                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6484                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6485                                 f2i_new->sreg1 = args [1]->dreg;
6486                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6487                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6488                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6489
6490                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6491                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6492                                 f2i_cmp->sreg1 = args [2]->dreg;
6493                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6494                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6495                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6496                         }
6497
6498                         MONO_INST_NEW (cfg, ins, opcode);
6499                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6500                         ins->sreg1 = args [0]->dreg;
6501                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6502                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6503                         MONO_ADD_INS (cfg->cbb, ins);
6504
6505                         switch (fsig->params [1]->type) {
6506                         case MONO_TYPE_I4:
6507                                 ins->type = STACK_I4;
6508                                 break;
6509                         case MONO_TYPE_I8:
6510                                 ins->type = STACK_I8;
6511                                 break;
6512                         case MONO_TYPE_I:
6513 #if SIZEOF_REGISTER == 8
6514                                 ins->type = STACK_I8;
6515 #else
6516                                 ins->type = STACK_I4;
6517 #endif
6518                                 break;
6519                         case MONO_TYPE_R4:
6520                                 ins->type = cfg->r4_stack_type;
6521                                 break;
6522                         case MONO_TYPE_R8:
6523                                 ins->type = STACK_R8;
6524                                 break;
6525                         default:
6526                                 g_assert (mini_type_is_reference (fsig->params [1]));
6527                                 ins->type = STACK_OBJ;
6528                                 break;
6529                         }
6530
6531                         if (is_float) {
6532                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6533                                 i2f->dreg = mono_alloc_freg (cfg);
6534                                 i2f->sreg1 = ins->dreg;
6535                                 i2f->type = STACK_R8;
6536                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6537                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6538                                 MONO_ADD_INS (cfg->cbb, i2f);
6539
6540                                 ins = i2f;
6541                         }
6542
6543                         if (cfg->gen_write_barriers && is_ref)
6544                                 emit_write_barrier (cfg, args [0], args [1]);
6545                 }
6546                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6547                          fsig->params [1]->type == MONO_TYPE_I4) {
6548                         MonoInst *cmp, *ceq;
6549
6550                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6551                                 return NULL;
6552
6553                         /* int32 r = CAS (location, value, comparand); */
6554                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6555                         ins->dreg = alloc_ireg (cfg);
6556                         ins->sreg1 = args [0]->dreg;
6557                         ins->sreg2 = args [1]->dreg;
6558                         ins->sreg3 = args [2]->dreg;
6559                         ins->type = STACK_I4;
6560                         MONO_ADD_INS (cfg->cbb, ins);
6561
6562                         /* bool result = r == comparand; */
6563                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6564                         cmp->sreg1 = ins->dreg;
6565                         cmp->sreg2 = args [2]->dreg;
6566                         cmp->type = STACK_I4;
6567                         MONO_ADD_INS (cfg->cbb, cmp);
6568
6569                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6570                         ceq->dreg = alloc_ireg (cfg);
6571                         ceq->type = STACK_I4;
6572                         MONO_ADD_INS (cfg->cbb, ceq);
6573
6574                         /* *success = result; */
6575                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6576
6577                         cfg->has_atomic_cas_i4 = TRUE;
6578                 }
6579                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6580                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6581
6582                 if (ins)
6583                         return ins;
6584         } else if (cmethod->klass->image == mono_defaults.corlib &&
6585                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6586                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6587                 ins = NULL;
6588
6589                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6590                         guint32 opcode = 0;
6591                         MonoType *t = fsig->params [0];
6592                         gboolean is_ref;
6593                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6594
6595                         g_assert (t->byref);
6596                         /* t is a byref type, so the reference check is more complicated */
6597                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6598                         if (t->type == MONO_TYPE_I1)
6599                                 opcode = OP_ATOMIC_LOAD_I1;
6600                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6601                                 opcode = OP_ATOMIC_LOAD_U1;
6602                         else if (t->type == MONO_TYPE_I2)
6603                                 opcode = OP_ATOMIC_LOAD_I2;
6604                         else if (t->type == MONO_TYPE_U2)
6605                                 opcode = OP_ATOMIC_LOAD_U2;
6606                         else if (t->type == MONO_TYPE_I4)
6607                                 opcode = OP_ATOMIC_LOAD_I4;
6608                         else if (t->type == MONO_TYPE_U4)
6609                                 opcode = OP_ATOMIC_LOAD_U4;
6610                         else if (t->type == MONO_TYPE_R4)
6611                                 opcode = OP_ATOMIC_LOAD_R4;
6612                         else if (t->type == MONO_TYPE_R8)
6613                                 opcode = OP_ATOMIC_LOAD_R8;
6614 #if SIZEOF_REGISTER == 8
6615                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6616                                 opcode = OP_ATOMIC_LOAD_I8;
6617                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6618                                 opcode = OP_ATOMIC_LOAD_U8;
6619 #else
6620                         else if (t->type == MONO_TYPE_I)
6621                                 opcode = OP_ATOMIC_LOAD_I4;
6622                         else if (is_ref || t->type == MONO_TYPE_U)
6623                                 opcode = OP_ATOMIC_LOAD_U4;
6624 #endif
6625
6626                         if (opcode) {
6627                                 if (!mono_arch_opcode_supported (opcode))
6628                                         return NULL;
6629
6630                                 MONO_INST_NEW (cfg, ins, opcode);
6631                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6632                                 ins->sreg1 = args [0]->dreg;
6633                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6634                                 MONO_ADD_INS (cfg->cbb, ins);
6635
6636                                 switch (t->type) {
6637                                 case MONO_TYPE_BOOLEAN:
6638                                 case MONO_TYPE_I1:
6639                                 case MONO_TYPE_U1:
6640                                 case MONO_TYPE_I2:
6641                                 case MONO_TYPE_U2:
6642                                 case MONO_TYPE_I4:
6643                                 case MONO_TYPE_U4:
6644                                         ins->type = STACK_I4;
6645                                         break;
6646                                 case MONO_TYPE_I8:
6647                                 case MONO_TYPE_U8:
6648                                         ins->type = STACK_I8;
6649                                         break;
6650                                 case MONO_TYPE_I:
6651                                 case MONO_TYPE_U:
6652 #if SIZEOF_REGISTER == 8
6653                                         ins->type = STACK_I8;
6654 #else
6655                                         ins->type = STACK_I4;
6656 #endif
6657                                         break;
6658                                 case MONO_TYPE_R4:
6659                                         ins->type = cfg->r4_stack_type;
6660                                         break;
6661                                 case MONO_TYPE_R8:
6662                                         ins->type = STACK_R8;
6663                                         break;
6664                                 default:
6665                                         g_assert (is_ref);
6666                                         ins->type = STACK_OBJ;
6667                                         break;
6668                                 }
6669                         }
6670                 }
6671
6672                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6673                         guint32 opcode = 0;
6674                         MonoType *t = fsig->params [0];
6675                         gboolean is_ref;
6676
6677                         g_assert (t->byref);
6678                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6679                         if (t->type == MONO_TYPE_I1)
6680                                 opcode = OP_ATOMIC_STORE_I1;
6681                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6682                                 opcode = OP_ATOMIC_STORE_U1;
6683                         else if (t->type == MONO_TYPE_I2)
6684                                 opcode = OP_ATOMIC_STORE_I2;
6685                         else if (t->type == MONO_TYPE_U2)
6686                                 opcode = OP_ATOMIC_STORE_U2;
6687                         else if (t->type == MONO_TYPE_I4)
6688                                 opcode = OP_ATOMIC_STORE_I4;
6689                         else if (t->type == MONO_TYPE_U4)
6690                                 opcode = OP_ATOMIC_STORE_U4;
6691                         else if (t->type == MONO_TYPE_R4)
6692                                 opcode = OP_ATOMIC_STORE_R4;
6693                         else if (t->type == MONO_TYPE_R8)
6694                                 opcode = OP_ATOMIC_STORE_R8;
6695 #if SIZEOF_REGISTER == 8
6696                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6697                                 opcode = OP_ATOMIC_STORE_I8;
6698                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6699                                 opcode = OP_ATOMIC_STORE_U8;
6700 #else
6701                         else if (t->type == MONO_TYPE_I)
6702                                 opcode = OP_ATOMIC_STORE_I4;
6703                         else if (is_ref || t->type == MONO_TYPE_U)
6704                                 opcode = OP_ATOMIC_STORE_U4;
6705 #endif
6706
6707                         if (opcode) {
6708                                 if (!mono_arch_opcode_supported (opcode))
6709                                         return NULL;
6710
6711                                 MONO_INST_NEW (cfg, ins, opcode);
6712                                 ins->dreg = args [0]->dreg;
6713                                 ins->sreg1 = args [1]->dreg;
6714                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6715                                 MONO_ADD_INS (cfg->cbb, ins);
6716
6717                                 if (cfg->gen_write_barriers && is_ref)
6718                                         emit_write_barrier (cfg, args [0], args [1]);
6719                         }
6720                 }
6721
6722                 if (ins)
6723                         return ins;
6724         } else if (cmethod->klass->image == mono_defaults.corlib &&
6725                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6726                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6727                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6728                         if (should_insert_brekpoint (cfg->method)) {
6729                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6730                         } else {
6731                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6732                                 MONO_ADD_INS (cfg->cbb, ins);
6733                         }
6734                         return ins;
6735                 }
6736         } else if (cmethod->klass->image == mono_defaults.corlib &&
6737                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6738                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6739                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6740 #ifdef TARGET_WIN32
6741                         EMIT_NEW_ICONST (cfg, ins, 1);
6742 #else
6743                         EMIT_NEW_ICONST (cfg, ins, 0);
6744 #endif
6745                 }
6746         } else if (cmethod->klass->image == mono_defaults.corlib &&
6747                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6748                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6749                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6750                         /* No stack walks are currently available, so implement this as an intrinsic */
6751                         MonoInst *assembly_ins;
6752
6753                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6754                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6755                         return ins;
6756                 }
6757         } else if (cmethod->klass->image == mono_defaults.corlib &&
6758                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6759                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6760                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6761                         /* No stack walks are currently available, so implement this as an intrinsic */
6762                         MonoInst *method_ins;
6763                         MonoMethod *declaring = cfg->method;
6764
6765                         /* This returns the declaring generic method */
6766                         if (declaring->is_inflated)
6767                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6768                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6769                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6770                         cfg->no_inline = TRUE;
6771                         if (cfg->method != cfg->current_method)
6772                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6773                         return ins;
6774                 }
6775         } else if (cmethod->klass == mono_defaults.math_class) {
6776                 /*
6777                  * There is general branchless code for Min/Max, but it does not work for
6778                  * all inputs:
6779                  * http://everything2.com/?node_id=1051618
6780                  */
6781         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6782                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6783                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6784                                 !strcmp (cmethod->klass->name, "Selector")) ||
6785                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6786                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6787                                 !strcmp (cmethod->klass->name, "Selector"))
6788                            ) {
6789                 if (cfg->backend->have_objc_get_selector &&
6790                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6791                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6792                     cfg->compile_aot && !cfg->llvm_only) {
6793                         MonoInst *pi;
6794                         MonoJumpInfoToken *ji;
6795                         MonoString *s;
6796
6797                         // FIXME: llvmonly
6798
6799                         cfg->exception_message = g_strdup ("GetHandle");
6800                         cfg->disable_llvm = TRUE;
6801
6802                         if (args [0]->opcode == OP_GOT_ENTRY) {
6803                                 pi = (MonoInst *)args [0]->inst_p1;
6804                                 g_assert (pi->opcode == OP_PATCH_INFO);
6805                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6806                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6807                         } else {
6808                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6809                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6810                         }
6811
6812                         NULLIFY_INS (args [0]);
6813
6814                         // FIXME: Ugly
6815                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6816                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6817                         ins->dreg = mono_alloc_ireg (cfg);
6818                         // FIXME: Leaks
6819                         ins->inst_p0 = mono_string_to_utf8 (s);
6820                         MONO_ADD_INS (cfg->cbb, ins);
6821                         return ins;
6822                 }
6823         }
6824
6825 #ifdef MONO_ARCH_SIMD_INTRINSICS
6826         if (cfg->opt & MONO_OPT_SIMD) {
6827                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6828                 if (ins)
6829                         return ins;
6830         }
6831 #endif
6832
6833         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6834         if (ins)
6835                 return ins;
6836
6837         if (COMPILE_LLVM (cfg)) {
6838                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6839                 if (ins)
6840                         return ins;
6841         }
6842
6843         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6844 }
6845
6846 /*
6847  * This entry point could be used later for arbitrary method
6848  * redirection.
6849  */
6850 inline static MonoInst*
6851 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6852                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6853 {
6854         if (method->klass == mono_defaults.string_class) {
6855                 /* managed string allocation support */
6856                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6857                         MonoInst *iargs [2];
6858                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6859                         MonoMethod *managed_alloc = NULL;
6860
6861                         g_assert (vtable); /*Should not fail since it System.String*/
6862 #ifndef MONO_CROSS_COMPILE
6863                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6864 #endif
6865                         if (!managed_alloc)
6866                                 return NULL;
6867                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6868                         iargs [1] = args [0];
6869                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6870                 }
6871         }
6872         return NULL;
6873 }
6874
6875 static void
6876 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6877 {
6878         MonoInst *store, *temp;
6879         int i;
6880
6881         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6882                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6883
6884                 /*
6885                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6886                  * would be different than the MonoInst's used to represent arguments, and
6887                  * the ldelema implementation can't deal with that.
6888                  * Solution: When ldelema is used on an inline argument, create a var for
6889                  * it, emit ldelema on that var, and emit the saving code below in
6890                  * inline_method () if needed.
6891                  */
6892                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6893                 cfg->args [i] = temp;
6894                 /* This uses cfg->args [i] which is set by the preceeding line */
6895                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6896                 store->cil_code = sp [0]->cil_code;
6897                 sp++;
6898         }
6899 }
6900
6901 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6902 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6903
6904 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6905 static gboolean
6906 check_inline_called_method_name_limit (MonoMethod *called_method)
6907 {
6908         int strncmp_result;
6909         static const char *limit = NULL;
6910
6911         if (limit == NULL) {
6912                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6913
6914                 if (limit_string != NULL)
6915                         limit = limit_string;
6916                 else
6917                         limit = "";
6918         }
6919
6920         if (limit [0] != '\0') {
6921                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6922
6923                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6924                 g_free (called_method_name);
6925
6926                 //return (strncmp_result <= 0);
6927                 return (strncmp_result == 0);
6928         } else {
6929                 return TRUE;
6930         }
6931 }
6932 #endif
6933
6934 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6935 static gboolean
6936 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6937 {
6938         int strncmp_result;
6939         static const char *limit = NULL;
6940
6941         if (limit == NULL) {
6942                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6943                 if (limit_string != NULL) {
6944                         limit = limit_string;
6945                 } else {
6946                         limit = "";
6947                 }
6948         }
6949
6950         if (limit [0] != '\0') {
6951                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6952
6953                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6954                 g_free (caller_method_name);
6955
6956                 //return (strncmp_result <= 0);
6957                 return (strncmp_result == 0);
6958         } else {
6959                 return TRUE;
6960         }
6961 }
6962 #endif
6963
6964 static void
6965 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6966 {
6967         static double r8_0 = 0.0;
6968         static float r4_0 = 0.0;
6969         MonoInst *ins;
6970         int t;
6971
6972         rtype = mini_get_underlying_type (rtype);
6973         t = rtype->type;
6974
6975         if (rtype->byref) {
6976                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6977         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6978                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6979         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6980                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6981         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6982                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6983                 ins->type = STACK_R4;
6984                 ins->inst_p0 = (void*)&r4_0;
6985                 ins->dreg = dreg;
6986                 MONO_ADD_INS (cfg->cbb, ins);
6987         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6988                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6989                 ins->type = STACK_R8;
6990                 ins->inst_p0 = (void*)&r8_0;
6991                 ins->dreg = dreg;
6992                 MONO_ADD_INS (cfg->cbb, ins);
6993         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6994                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6995                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6996         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6997                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6998         } else {
6999                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7000         }
7001 }
7002
7003 static void
7004 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7005 {
7006         int t;
7007
7008         rtype = mini_get_underlying_type (rtype);
7009         t = rtype->type;
7010
7011         if (rtype->byref) {
7012                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7013         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7014                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7015         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7016                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7017         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7018                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7019         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7020                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7021         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7022                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7023                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7024         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7025                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7026         } else {
7027                 emit_init_rvar (cfg, dreg, rtype);
7028         }
7029 }
7030
7031 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7032 static void
7033 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7034 {
7035         MonoInst *var = cfg->locals [local];
7036         if (COMPILE_SOFT_FLOAT (cfg)) {
7037                 MonoInst *store;
7038                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7039                 emit_init_rvar (cfg, reg, type);
7040                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7041         } else {
7042                 if (init)
7043                         emit_init_rvar (cfg, var->dreg, type);
7044                 else
7045                         emit_dummy_init_rvar (cfg, var->dreg, type);
7046         }
7047 }
7048
7049 /*
7050  * inline_method:
7051  *
7052  *   Return the cost of inlining CMETHOD.
7053  */
7054 static int
7055 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7056                            guchar *ip, guint real_offset, gboolean inline_always)
7057 {
7058         MonoInst *ins, *rvar = NULL;
7059         MonoMethodHeader *cheader;
7060         MonoBasicBlock *ebblock, *sbblock;
7061         int i, costs;
7062         MonoMethod *prev_inlined_method;
7063         MonoInst **prev_locals, **prev_args;
7064         MonoType **prev_arg_types;
7065         guint prev_real_offset;
7066         GHashTable *prev_cbb_hash;
7067         MonoBasicBlock **prev_cil_offset_to_bb;
7068         MonoBasicBlock *prev_cbb;
7069         unsigned char* prev_cil_start;
7070         guint32 prev_cil_offset_to_bb_len;
7071         MonoMethod *prev_current_method;
7072         MonoGenericContext *prev_generic_context;
7073         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7074
7075         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7076
7077 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7078         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7079                 return 0;
7080 #endif
7081 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7082         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7083                 return 0;
7084 #endif
7085
7086         if (!fsig)
7087                 fsig = mono_method_signature (cmethod);
7088
7089         if (cfg->verbose_level > 2)
7090                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7091
7092         if (!cmethod->inline_info) {
7093                 cfg->stat_inlineable_methods++;
7094                 cmethod->inline_info = 1;
7095         }
7096
7097         /* allocate local variables */
7098         cheader = mono_method_get_header (cmethod);
7099
7100         if (cheader == NULL || mono_loader_get_last_error ()) {
7101                 if (cheader)
7102                         mono_metadata_free_mh (cheader);
7103                 if (inline_always && mono_loader_get_last_error ()) {
7104                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7105                         mono_error_set_from_loader_error (&cfg->error);
7106                 }
7107
7108                 mono_loader_clear_error ();
7109                 return 0;
7110         }
7111
7112         /*Must verify before creating locals as it can cause the JIT to assert.*/
7113         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7114                 mono_metadata_free_mh (cheader);
7115                 return 0;
7116         }
7117
7118         /* allocate space to store the return value */
7119         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7120                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7121         }
7122
7123         prev_locals = cfg->locals;
7124         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7125         for (i = 0; i < cheader->num_locals; ++i)
7126                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7127
7128         /* allocate start and end blocks */
7129         /* This is needed so if the inline is aborted, we can clean up */
7130         NEW_BBLOCK (cfg, sbblock);
7131         sbblock->real_offset = real_offset;
7132
7133         NEW_BBLOCK (cfg, ebblock);
7134         ebblock->block_num = cfg->num_bblocks++;
7135         ebblock->real_offset = real_offset;
7136
7137         prev_args = cfg->args;
7138         prev_arg_types = cfg->arg_types;
7139         prev_inlined_method = cfg->inlined_method;
7140         cfg->inlined_method = cmethod;
7141         cfg->ret_var_set = FALSE;
7142         cfg->inline_depth ++;
7143         prev_real_offset = cfg->real_offset;
7144         prev_cbb_hash = cfg->cbb_hash;
7145         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7146         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7147         prev_cil_start = cfg->cil_start;
7148         prev_cbb = cfg->cbb;
7149         prev_current_method = cfg->current_method;
7150         prev_generic_context = cfg->generic_context;
7151         prev_ret_var_set = cfg->ret_var_set;
7152         prev_disable_inline = cfg->disable_inline;
7153
7154         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7155                 virtual_ = TRUE;
7156
7157         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7158
7159         ret_var_set = cfg->ret_var_set;
7160
7161         cfg->inlined_method = prev_inlined_method;
7162         cfg->real_offset = prev_real_offset;
7163         cfg->cbb_hash = prev_cbb_hash;
7164         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7165         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7166         cfg->cil_start = prev_cil_start;
7167         cfg->locals = prev_locals;
7168         cfg->args = prev_args;
7169         cfg->arg_types = prev_arg_types;
7170         cfg->current_method = prev_current_method;
7171         cfg->generic_context = prev_generic_context;
7172         cfg->ret_var_set = prev_ret_var_set;
7173         cfg->disable_inline = prev_disable_inline;
7174         cfg->inline_depth --;
7175
7176         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7177                 if (cfg->verbose_level > 2)
7178                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7179
7180                 cfg->stat_inlined_methods++;
7181
7182                 /* always add some code to avoid block split failures */
7183                 MONO_INST_NEW (cfg, ins, OP_NOP);
7184                 MONO_ADD_INS (prev_cbb, ins);
7185
7186                 prev_cbb->next_bb = sbblock;
7187                 link_bblock (cfg, prev_cbb, sbblock);
7188
7189                 /*
7190                  * Get rid of the begin and end bblocks if possible to aid local
7191                  * optimizations.
7192                  */
7193                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7194
7195                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7196                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7197
7198                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7199                         MonoBasicBlock *prev = ebblock->in_bb [0];
7200
7201                         if (prev->next_bb == ebblock) {
7202                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7203                                 cfg->cbb = prev;
7204                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7205                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7206                                         cfg->cbb = prev_cbb;
7207                                 }
7208                         } else {
7209                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7210                                 cfg->cbb = ebblock;
7211                         }
7212                 } else {
7213                         /*
7214                          * Its possible that the rvar is set in some prev bblock, but not in others.
7215                          * (#1835).
7216                          */
7217                         if (rvar) {
7218                                 MonoBasicBlock *bb;
7219
7220                                 for (i = 0; i < ebblock->in_count; ++i) {
7221                                         bb = ebblock->in_bb [i];
7222
7223                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7224                                                 cfg->cbb = bb;
7225
7226                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7227                                         }
7228                                 }
7229                         }
7230
7231                         cfg->cbb = ebblock;
7232                 }
7233
7234                 if (rvar) {
7235                         /*
7236                          * If the inlined method contains only a throw, then the ret var is not
7237                          * set, so set it to a dummy value.
7238                          */
7239                         if (!ret_var_set)
7240                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7241
7242                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7243                         *sp++ = ins;
7244                 }
7245                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7246                 return costs + 1;
7247         } else {
7248                 if (cfg->verbose_level > 2)
7249                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7250                 cfg->exception_type = MONO_EXCEPTION_NONE;
7251                 mono_loader_clear_error ();
7252
7253                 /* This gets rid of the newly added bblocks */
7254                 cfg->cbb = prev_cbb;
7255         }
7256         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7257         return 0;
7258 }
7259
7260 /*
7261  * Some of these comments may well be out-of-date.
7262  * Design decisions: we do a single pass over the IL code (and we do bblock
7263  * splitting/merging in the few cases when it's required: a back jump to an IL
7264  * address that was not already seen as bblock starting point).
7265  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7266  * Complex operations are decomposed in simpler ones right away. We need to let the
7267  * arch-specific code peek and poke inside this process somehow (except when the
7268  * optimizations can take advantage of the full semantic info of coarse opcodes).
7269  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7270  * MonoInst->opcode initially is the IL opcode or some simplification of that
7271  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7272  * opcode with value bigger than OP_LAST.
7273  * At this point the IR can be handed over to an interpreter, a dumb code generator
7274  * or to the optimizing code generator that will translate it to SSA form.
7275  *
7276  * Profiling directed optimizations.
7277  * We may compile by default with few or no optimizations and instrument the code
7278  * or the user may indicate what methods to optimize the most either in a config file
7279  * or through repeated runs where the compiler applies offline the optimizations to
7280  * each method and then decides if it was worth it.
7281  */
7282
7283 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7284 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7285 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7286 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7287 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7288 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7289 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7290 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7291
7292 /* offset from br.s -> br like opcodes */
7293 #define BIG_BRANCH_OFFSET 13
7294
7295 static gboolean
7296 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7297 {
7298         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7299
7300         return b == NULL || b == bb;
7301 }
7302
7303 static int
7304 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7305 {
7306         unsigned char *ip = start;
7307         unsigned char *target;
7308         int i;
7309         guint cli_addr;
7310         MonoBasicBlock *bblock;
7311         const MonoOpcode *opcode;
7312
7313         while (ip < end) {
7314                 cli_addr = ip - start;
7315                 i = mono_opcode_value ((const guint8 **)&ip, end);
7316                 if (i < 0)
7317                         UNVERIFIED;
7318                 opcode = &mono_opcodes [i];
7319                 switch (opcode->argument) {
7320                 case MonoInlineNone:
7321                         ip++;
7322                         break;
7323                 case MonoInlineString:
7324                 case MonoInlineType:
7325                 case MonoInlineField:
7326                 case MonoInlineMethod:
7327                 case MonoInlineTok:
7328                 case MonoInlineSig:
7329                 case MonoShortInlineR:
7330                 case MonoInlineI:
7331                         ip += 5;
7332                         break;
7333                 case MonoInlineVar:
7334                         ip += 3;
7335                         break;
7336                 case MonoShortInlineVar:
7337                 case MonoShortInlineI:
7338                         ip += 2;
7339                         break;
7340                 case MonoShortInlineBrTarget:
7341                         target = start + cli_addr + 2 + (signed char)ip [1];
7342                         GET_BBLOCK (cfg, bblock, target);
7343                         ip += 2;
7344                         if (ip < end)
7345                                 GET_BBLOCK (cfg, bblock, ip);
7346                         break;
7347                 case MonoInlineBrTarget:
7348                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7349                         GET_BBLOCK (cfg, bblock, target);
7350                         ip += 5;
7351                         if (ip < end)
7352                                 GET_BBLOCK (cfg, bblock, ip);
7353                         break;
7354                 case MonoInlineSwitch: {
7355                         guint32 n = read32 (ip + 1);
7356                         guint32 j;
7357                         ip += 5;
7358                         cli_addr += 5 + 4 * n;
7359                         target = start + cli_addr;
7360                         GET_BBLOCK (cfg, bblock, target);
7361
7362                         for (j = 0; j < n; ++j) {
7363                                 target = start + cli_addr + (gint32)read32 (ip);
7364                                 GET_BBLOCK (cfg, bblock, target);
7365                                 ip += 4;
7366                         }
7367                         break;
7368                 }
7369                 case MonoInlineR:
7370                 case MonoInlineI8:
7371                         ip += 9;
7372                         break;
7373                 default:
7374                         g_assert_not_reached ();
7375                 }
7376
7377                 if (i == CEE_THROW) {
7378                         unsigned char *bb_start = ip - 1;
7379
7380                         /* Find the start of the bblock containing the throw */
7381                         bblock = NULL;
7382                         while ((bb_start >= start) && !bblock) {
7383                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7384                                 bb_start --;
7385                         }
7386                         if (bblock)
7387                                 bblock->out_of_line = 1;
7388                 }
7389         }
7390         return 0;
7391 unverified:
7392 exception_exit:
7393         *pos = ip;
7394         return 1;
7395 }
7396
7397 static inline MonoMethod *
7398 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7399 {
7400         MonoMethod *method;
7401
7402         mono_error_init (error);
7403
7404         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7405                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7406                 if (context) {
7407                         method = mono_class_inflate_generic_method_checked (method, context, error);
7408                 }
7409         } else {
7410                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7411         }
7412
7413         return method;
7414 }
7415
7416 static inline MonoMethod *
7417 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7418 {
7419         MonoError error;
7420         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7421
7422         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7423                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7424                 method = NULL;
7425         }
7426
7427         if (!method && !cfg)
7428                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7429
7430         return method;
7431 }
7432
7433 static inline MonoClass*
7434 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7435 {
7436         MonoError error;
7437         MonoClass *klass;
7438
7439         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7440                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7441                 if (context)
7442                         klass = mono_class_inflate_generic_class (klass, context);
7443         } else {
7444                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7445                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7446         }
7447         if (klass)
7448                 mono_class_init (klass);
7449         return klass;
7450 }
7451
7452 static inline MonoMethodSignature*
7453 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7454 {
7455         MonoMethodSignature *fsig;
7456
7457         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7458                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7459         } else {
7460                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7461         }
7462         if (context) {
7463                 MonoError error;
7464                 fsig = mono_inflate_generic_signature(fsig, context, &error);
7465                 // FIXME:
7466                 g_assert(mono_error_ok(&error));
7467         }
7468         return fsig;
7469 }
7470
7471 static MonoMethod*
7472 throw_exception (void)
7473 {
7474         static MonoMethod *method = NULL;
7475
7476         if (!method) {
7477                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7478                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7479         }
7480         g_assert (method);
7481         return method;
7482 }
7483
7484 static void
7485 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7486 {
7487         MonoMethod *thrower = throw_exception ();
7488         MonoInst *args [1];
7489
7490         EMIT_NEW_PCONST (cfg, args [0], ex);
7491         mono_emit_method_call (cfg, thrower, args, NULL);
7492 }
7493
7494 /*
7495  * Return the original method is a wrapper is specified. We can only access
7496  * the custom attributes from the original method.
7497  */
7498 static MonoMethod*
7499 get_original_method (MonoMethod *method)
7500 {
7501         if (method->wrapper_type == MONO_WRAPPER_NONE)
7502                 return method;
7503
7504         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7505         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7506                 return NULL;
7507
7508         /* in other cases we need to find the original method */
7509         return mono_marshal_method_from_wrapper (method);
7510 }
7511
7512 static void
7513 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7514 {
7515         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7516         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7517         if (ex)
7518                 emit_throw_exception (cfg, ex);
7519 }
7520
7521 static void
7522 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7523 {
7524         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7525         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7526         if (ex)
7527                 emit_throw_exception (cfg, ex);
7528 }
7529
7530 /*
7531  * Check that the IL instructions at ip are the array initialization
7532  * sequence and return the pointer to the data and the size.
7533  */
7534 static const char*
7535 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7536 {
7537         /*
7538          * newarr[System.Int32]
7539          * dup
7540          * ldtoken field valuetype ...
7541          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7542          */
7543         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7544                 MonoError error;
7545                 guint32 token = read32 (ip + 7);
7546                 guint32 field_token = read32 (ip + 2);
7547                 guint32 field_index = field_token & 0xffffff;
7548                 guint32 rva;
7549                 const char *data_ptr;
7550                 int size = 0;
7551                 MonoMethod *cmethod;
7552                 MonoClass *dummy_class;
7553                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7554                 int dummy_align;
7555
7556                 if (!field) {
7557                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7558                         return NULL;
7559                 }
7560
7561                 *out_field_token = field_token;
7562
7563                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7564                 if (!cmethod)
7565                         return NULL;
7566                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7567                         return NULL;
7568                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7569                 case MONO_TYPE_BOOLEAN:
7570                 case MONO_TYPE_I1:
7571                 case MONO_TYPE_U1:
7572                         size = 1; break;
7573                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7574 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7575                 case MONO_TYPE_CHAR:
7576                 case MONO_TYPE_I2:
7577                 case MONO_TYPE_U2:
7578                         size = 2; break;
7579                 case MONO_TYPE_I4:
7580                 case MONO_TYPE_U4:
7581                 case MONO_TYPE_R4:
7582                         size = 4; break;
7583                 case MONO_TYPE_R8:
7584                 case MONO_TYPE_I8:
7585                 case MONO_TYPE_U8:
7586                         size = 8; break;
7587 #endif
7588                 default:
7589                         return NULL;
7590                 }
7591                 size *= len;
7592                 if (size > mono_type_size (field->type, &dummy_align))
7593                     return NULL;
7594                 *out_size = size;
7595                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7596                 if (!image_is_dynamic (method->klass->image)) {
7597                         field_index = read32 (ip + 2) & 0xffffff;
7598                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7599                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7600                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7601                         /* for aot code we do the lookup on load */
7602                         if (aot && data_ptr)
7603                                 return (const char *)GUINT_TO_POINTER (rva);
7604                 } else {
7605                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7606                         g_assert (!aot);
7607                         data_ptr = mono_field_get_data (field);
7608                 }
7609                 return data_ptr;
7610         }
7611         return NULL;
7612 }
7613
7614 static void
7615 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7616 {
7617         char *method_fname = mono_method_full_name (method, TRUE);
7618         char *method_code;
7619         MonoMethodHeader *header = mono_method_get_header (method);
7620
7621         if (header->code_size == 0)
7622                 method_code = g_strdup ("method body is empty.");
7623         else
7624                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7625         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7626         g_free (method_fname);
7627         g_free (method_code);
7628         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7629 }
7630
7631 static void
7632 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7633 {
7634         MonoInst *ins;
7635         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7636         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7637                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7638                 /* Optimize reg-reg moves away */
7639                 /*
7640                  * Can't optimize other opcodes, since sp[0] might point to
7641                  * the last ins of a decomposed opcode.
7642                  */
7643                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7644         } else {
7645                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7646         }
7647 }
7648
7649 /*
7650  * ldloca inhibits many optimizations so try to get rid of it in common
7651  * cases.
7652  */
7653 static inline unsigned char *
7654 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7655 {
7656         int local, token;
7657         MonoClass *klass;
7658         MonoType *type;
7659
7660         if (size == 1) {
7661                 local = ip [1];
7662                 ip += 2;
7663         } else {
7664                 local = read16 (ip + 2);
7665                 ip += 4;
7666         }
7667
7668         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7669                 /* From the INITOBJ case */
7670                 token = read32 (ip + 2);
7671                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7672                 CHECK_TYPELOAD (klass);
7673                 type = mini_get_underlying_type (&klass->byval_arg);
7674                 emit_init_local (cfg, local, type, TRUE);
7675                 return ip + 6;
7676         }
7677  exception_exit:
7678         return NULL;
7679 }
7680
7681 static MonoInst*
7682 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7683 {
7684         MonoInst *icall_args [16];
7685         MonoInst *call_target, *ins, *vtable_ins;
7686         int arg_reg, this_reg, vtable_reg;
7687         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7688         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7689         gboolean variant_iface = FALSE;
7690         guint32 slot;
7691         int offset;
7692
7693         /*
7694          * In llvm-only mode, vtables contain function descriptors instead of
7695          * method addresses/trampolines.
7696          */
7697         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7698
7699         if (is_iface)
7700                 slot = mono_method_get_imt_slot (cmethod);
7701         else
7702                 slot = mono_method_get_vtable_index (cmethod);
7703
7704         this_reg = sp [0]->dreg;
7705
7706         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7707                 variant_iface = TRUE;
7708
7709         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7710                 /*
7711                  * The simplest case, a normal virtual call.
7712                  */
7713                 int slot_reg = alloc_preg (cfg);
7714                 int addr_reg = alloc_preg (cfg);
7715                 int arg_reg = alloc_preg (cfg);
7716                 MonoBasicBlock *non_null_bb;
7717
7718                 vtable_reg = alloc_preg (cfg);
7719                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7720                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7721
7722                 /* Load the vtable slot, which contains a function descriptor. */
7723                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7724
7725                 NEW_BBLOCK (cfg, non_null_bb);
7726
7727                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7728                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7729                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7730
7731                 /* Slow path */
7732                 // FIXME: Make the wrapper use the preserveall cconv
7733                 // FIXME: Use one icall per slot for small slot numbers ?
7734                 icall_args [0] = vtable_ins;
7735                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7736                 /* Make the icall return the vtable slot value to save some code space */
7737                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7738                 ins->dreg = slot_reg;
7739                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7740
7741                 /* Fastpath */
7742                 MONO_START_BB (cfg, non_null_bb);
7743                 /* Load the address + arg from the vtable slot */
7744                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7745                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7746
7747                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7748         }
7749
7750         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7751                 /*
7752                  * A simple interface call
7753                  *
7754                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7755                  * The imt slot contains a function descriptor for a runtime function + arg.
7756                  */
7757                 int slot_reg = alloc_preg (cfg);
7758                 int addr_reg = alloc_preg (cfg);
7759                 int arg_reg = alloc_preg (cfg);
7760                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7761
7762                 vtable_reg = alloc_preg (cfg);
7763                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7764                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7765
7766                 /*
7767                  * The slot is already initialized when the vtable is created so there is no need
7768                  * to check it here.
7769                  */
7770
7771                 /* Load the imt slot, which contains a function descriptor. */
7772                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7773
7774                 /* Load the address + arg of the imt thunk from the imt slot */
7775                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7776                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7777                 /*
7778                  * IMT thunks in llvm-only mode are C functions which take an info argument
7779                  * plus the imt method and return the ftndesc to call.
7780                  */
7781                 icall_args [0] = thunk_arg_ins;
7782                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7783                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7784                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7785
7786                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7787         }
7788
7789         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7790                 /*
7791                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7792                  * dynamically extended as more instantiations are discovered.
7793                  * This handles generic virtual methods both on classes and interfaces.
7794                  */
7795                 int slot_reg = alloc_preg (cfg);
7796                 int addr_reg = alloc_preg (cfg);
7797                 int arg_reg = alloc_preg (cfg);
7798                 int ftndesc_reg = alloc_preg (cfg);
7799                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7800                 MonoBasicBlock *slowpath_bb, *end_bb;
7801
7802                 NEW_BBLOCK (cfg, slowpath_bb);
7803                 NEW_BBLOCK (cfg, end_bb);
7804
7805                 vtable_reg = alloc_preg (cfg);
7806                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7807                 if (is_iface)
7808                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7809                 else
7810                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7811
7812                 /* Load the slot, which contains a function descriptor. */
7813                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7814
7815                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7816                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7817                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7818                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7819
7820                 /* Fastpath */
7821                 /* Same as with iface calls */
7822                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7823                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7824                 icall_args [0] = thunk_arg_ins;
7825                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7826                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7827                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7828                 ftndesc_ins->dreg = ftndesc_reg;
7829                 /*
7830                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7831                  * they don't know about yet. Fall back to the slowpath in that case.
7832                  */
7833                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7834                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7835
7836                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7837
7838                 /* Slowpath */
7839                 MONO_START_BB (cfg, slowpath_bb);
7840                 icall_args [0] = vtable_ins;
7841                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7842                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7843                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7844                 if (is_iface)
7845                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7846                 else
7847                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7848                 ftndesc_ins->dreg = ftndesc_reg;
7849                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7850
7851                 /* Common case */
7852                 MONO_START_BB (cfg, end_bb);
7853                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7854         }
7855
7856         /*
7857          * Non-optimized cases
7858          */
7859         icall_args [0] = sp [0];
7860         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7861
7862         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7863                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7864
7865         arg_reg = alloc_preg (cfg);
7866         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7867         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7868
7869         g_assert (is_gsharedvt);
7870         if (is_iface)
7871                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7872         else
7873                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7874
7875         /*
7876          * Pass the extra argument even if the callee doesn't receive it, most
7877          * calling conventions allow this.
7878          */
7879         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7880 }
7881
7882 static gboolean
7883 is_exception_class (MonoClass *klass)
7884 {
7885         while (klass) {
7886                 if (klass == mono_defaults.exception_class)
7887                         return TRUE;
7888                 klass = klass->parent;
7889         }
7890         return FALSE;
7891 }
7892
7893 /*
7894  * is_jit_optimizer_disabled:
7895  *
7896  *   Determine whenever M's assembly has a DebuggableAttribute with the
7897  * IsJITOptimizerDisabled flag set.
7898  */
7899 static gboolean
7900 is_jit_optimizer_disabled (MonoMethod *m)
7901 {
7902         MonoAssembly *ass = m->klass->image->assembly;
7903         MonoCustomAttrInfo* attrs;
7904         MonoClass *klass;
7905         int i;
7906         gboolean val = FALSE;
7907
7908         g_assert (ass);
7909         if (ass->jit_optimizer_disabled_inited)
7910                 return ass->jit_optimizer_disabled;
7911
7912         klass = mono_class_try_get_debuggable_attribute_class ();
7913
7914         if (!klass) {
7915                 /* Linked away */
7916                 ass->jit_optimizer_disabled = FALSE;
7917                 mono_memory_barrier ();
7918                 ass->jit_optimizer_disabled_inited = TRUE;
7919                 return FALSE;
7920         }
7921
7922         attrs = mono_custom_attrs_from_assembly (ass);
7923         if (attrs) {
7924                 for (i = 0; i < attrs->num_attrs; ++i) {
7925                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7926                         const gchar *p;
7927                         MonoMethodSignature *sig;
7928
7929                         if (!attr->ctor || attr->ctor->klass != klass)
7930                                 continue;
7931                         /* Decode the attribute. See reflection.c */
7932                         p = (const char*)attr->data;
7933                         g_assert (read16 (p) == 0x0001);
7934                         p += 2;
7935
7936                         // FIXME: Support named parameters
7937                         sig = mono_method_signature (attr->ctor);
7938                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7939                                 continue;
7940                         /* Two boolean arguments */
7941                         p ++;
7942                         val = *p;
7943                 }
7944                 mono_custom_attrs_free (attrs);
7945         }
7946
7947         ass->jit_optimizer_disabled = val;
7948         mono_memory_barrier ();
7949         ass->jit_optimizer_disabled_inited = TRUE;
7950
7951         return val;
7952 }
7953
7954 static gboolean
7955 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7956 {
7957         gboolean supported_tail_call;
7958         int i;
7959
7960         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7961
7962         for (i = 0; i < fsig->param_count; ++i) {
7963                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7964                         /* These can point to the current method's stack */
7965                         supported_tail_call = FALSE;
7966         }
7967         if (fsig->hasthis && cmethod->klass->valuetype)
7968                 /* this might point to the current method's stack */
7969                 supported_tail_call = FALSE;
7970         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7971                 supported_tail_call = FALSE;
7972         if (cfg->method->save_lmf)
7973                 supported_tail_call = FALSE;
7974         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7975                 supported_tail_call = FALSE;
7976         if (call_opcode != CEE_CALL)
7977                 supported_tail_call = FALSE;
7978
7979         /* Debugging support */
7980 #if 0
7981         if (supported_tail_call) {
7982                 if (!mono_debug_count ())
7983                         supported_tail_call = FALSE;
7984         }
7985 #endif
7986
7987         return supported_tail_call;
7988 }
7989
7990 /*
7991  * handle_ctor_call:
7992  *
7993  *   Handle calls made to ctors from NEWOBJ opcodes.
7994  */
7995 static void
7996 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7997                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7998 {
7999         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8000
8001         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8002                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8003                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8004                         mono_class_vtable (cfg->domain, cmethod->klass);
8005                         CHECK_TYPELOAD (cmethod->klass);
8006
8007                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8008                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8009                 } else {
8010                         if (context_used) {
8011                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8012                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8013                         } else {
8014                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8015
8016                                 CHECK_TYPELOAD (cmethod->klass);
8017                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8018                         }
8019                 }
8020         }
8021
8022         /* Avoid virtual calls to ctors if possible */
8023         if (mono_class_is_marshalbyref (cmethod->klass))
8024                 callvirt_this_arg = sp [0];
8025
8026         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8027                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8028                 CHECK_CFG_EXCEPTION;
8029         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8030                            mono_method_check_inlining (cfg, cmethod) &&
8031                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8032                 int costs;
8033
8034                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8035                         cfg->real_offset += 5;
8036
8037                         *inline_costs += costs - 5;
8038                 } else {
8039                         INLINE_FAILURE ("inline failure");
8040                         // FIXME-VT: Clean this up
8041                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8042                                 GSHAREDVT_FAILURE(*ip);
8043                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8044                 }
8045         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8046                 MonoInst *addr;
8047
8048                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8049
8050                 if (cfg->llvm_only) {
8051                         // FIXME: Avoid initializing vtable_arg
8052                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8053                 } else {
8054                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8055                 }
8056         } else if (context_used &&
8057                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8058                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8059                 MonoInst *cmethod_addr;
8060
8061                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8062
8063                 if (cfg->llvm_only) {
8064                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8065                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8066                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8067                 } else {
8068                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8069                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8070
8071                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8072                 }
8073         } else {
8074                 INLINE_FAILURE ("ctor call");
8075                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8076                                                                                   callvirt_this_arg, NULL, vtable_arg);
8077         }
8078  exception_exit:
8079         return;
8080 }
8081
8082 static void
8083 emit_setret (MonoCompile *cfg, MonoInst *val)
8084 {
8085         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8086         MonoInst *ins;
8087
8088         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8089                 MonoInst *ret_addr;
8090
8091                 if (!cfg->vret_addr) {
8092                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8093                 } else {
8094                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8095
8096                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8097                         ins->klass = mono_class_from_mono_type (ret_type);
8098                 }
8099         } else {
8100 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8101                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8102                         MonoInst *iargs [1];
8103                         MonoInst *conv;
8104
8105                         iargs [0] = val;
8106                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8107                         mono_arch_emit_setret (cfg, cfg->method, conv);
8108                 } else {
8109                         mono_arch_emit_setret (cfg, cfg->method, val);
8110                 }
8111 #else
8112                 mono_arch_emit_setret (cfg, cfg->method, val);
8113 #endif
8114         }
8115 }
8116
8117 /*
8118  * mono_method_to_ir:
8119  *
8120  *   Translate the .net IL into linear IR.
8121  */
8122 int
8123 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8124                    MonoInst *return_var, MonoInst **inline_args,
8125                    guint inline_offset, gboolean is_virtual_call)
8126 {
8127         MonoError error;
8128         MonoInst *ins, **sp, **stack_start;
8129         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8130         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8131         MonoMethod *cmethod, *method_definition;
8132         MonoInst **arg_array;
8133         MonoMethodHeader *header;
8134         MonoImage *image;
8135         guint32 token, ins_flag;
8136         MonoClass *klass;
8137         MonoClass *constrained_class = NULL;
8138         unsigned char *ip, *end, *target, *err_pos;
8139         MonoMethodSignature *sig;
8140         MonoGenericContext *generic_context = NULL;
8141         MonoGenericContainer *generic_container = NULL;
8142         MonoType **param_types;
8143         int i, n, start_new_bblock, dreg;
8144         int num_calls = 0, inline_costs = 0;
8145         int breakpoint_id = 0;
8146         guint num_args;
8147         GSList *class_inits = NULL;
8148         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8149         int context_used;
8150         gboolean init_locals, seq_points, skip_dead_blocks;
8151         gboolean sym_seq_points = FALSE;
8152         MonoDebugMethodInfo *minfo;
8153         MonoBitSet *seq_point_locs = NULL;
8154         MonoBitSet *seq_point_set_locs = NULL;
8155
8156         cfg->disable_inline = is_jit_optimizer_disabled (method);
8157
8158         /* serialization and xdomain stuff may need access to private fields and methods */
8159         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8160         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8161         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8162         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8163         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8164         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8165
8166         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8167         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8168         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8169         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8170         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8171
8172         image = method->klass->image;
8173         header = mono_method_get_header (method);
8174         if (!header) {
8175                 if (mono_loader_get_last_error ()) {
8176                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8177                         mono_error_set_from_loader_error (&cfg->error);
8178                 } else {
8179                         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name));
8180                 }
8181                 goto exception_exit;
8182         }
8183         generic_container = mono_method_get_generic_container (method);
8184         sig = mono_method_signature (method);
8185         num_args = sig->hasthis + sig->param_count;
8186         ip = (unsigned char*)header->code;
8187         cfg->cil_start = ip;
8188         end = ip + header->code_size;
8189         cfg->stat_cil_code_size += header->code_size;
8190
8191         seq_points = cfg->gen_seq_points && cfg->method == method;
8192
8193         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8194                 /* We could hit a seq point before attaching to the JIT (#8338) */
8195                 seq_points = FALSE;
8196         }
8197
8198         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8199                 minfo = mono_debug_lookup_method (method);
8200                 if (minfo) {
8201                         MonoSymSeqPoint *sps;
8202                         int i, n_il_offsets;
8203
8204                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8205                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8206                         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);
8207                         sym_seq_points = TRUE;
8208                         for (i = 0; i < n_il_offsets; ++i) {
8209                                 if (sps [i].il_offset < header->code_size)
8210                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8211                         }
8212                         g_free (sps);
8213                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8214                         /* Methods without line number info like auto-generated property accessors */
8215                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8216                         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);
8217                         sym_seq_points = TRUE;
8218                 }
8219         }
8220
8221         /*
8222          * Methods without init_locals set could cause asserts in various passes
8223          * (#497220). To work around this, we emit dummy initialization opcodes
8224          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8225          * on some platforms.
8226          */
8227         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8228                 init_locals = header->init_locals;
8229         else
8230                 init_locals = TRUE;
8231
8232         method_definition = method;
8233         while (method_definition->is_inflated) {
8234                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8235                 method_definition = imethod->declaring;
8236         }
8237
8238         /* SkipVerification is not allowed if core-clr is enabled */
8239         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8240                 dont_verify = TRUE;
8241                 dont_verify_stloc = TRUE;
8242         }
8243
8244         if (sig->is_inflated)
8245                 generic_context = mono_method_get_context (method);
8246         else if (generic_container)
8247                 generic_context = &generic_container->context;
8248         cfg->generic_context = generic_context;
8249
8250         if (!cfg->gshared)
8251                 g_assert (!sig->has_type_parameters);
8252
8253         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8254                 g_assert (method->is_inflated);
8255                 g_assert (mono_method_get_context (method)->method_inst);
8256         }
8257         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8258                 g_assert (sig->generic_param_count);
8259
8260         if (cfg->method == method) {
8261                 cfg->real_offset = 0;
8262         } else {
8263                 cfg->real_offset = inline_offset;
8264         }
8265
8266         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8267         cfg->cil_offset_to_bb_len = header->code_size;
8268
8269         cfg->current_method = method;
8270
8271         if (cfg->verbose_level > 2)
8272                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8273
8274         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8275         if (sig->hasthis)
8276                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8277         for (n = 0; n < sig->param_count; ++n)
8278                 param_types [n + sig->hasthis] = sig->params [n];
8279         cfg->arg_types = param_types;
8280
8281         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8282         if (cfg->method == method) {
8283
8284                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8285                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8286
8287                 /* ENTRY BLOCK */
8288                 NEW_BBLOCK (cfg, start_bblock);
8289                 cfg->bb_entry = start_bblock;
8290                 start_bblock->cil_code = NULL;
8291                 start_bblock->cil_length = 0;
8292
8293                 /* EXIT BLOCK */
8294                 NEW_BBLOCK (cfg, end_bblock);
8295                 cfg->bb_exit = end_bblock;
8296                 end_bblock->cil_code = NULL;
8297                 end_bblock->cil_length = 0;
8298                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8299                 g_assert (cfg->num_bblocks == 2);
8300
8301                 arg_array = cfg->args;
8302
8303                 if (header->num_clauses) {
8304                         cfg->spvars = g_hash_table_new (NULL, NULL);
8305                         cfg->exvars = g_hash_table_new (NULL, NULL);
8306                 }
8307                 /* handle exception clauses */
8308                 for (i = 0; i < header->num_clauses; ++i) {
8309                         MonoBasicBlock *try_bb;
8310                         MonoExceptionClause *clause = &header->clauses [i];
8311                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8312
8313                         try_bb->real_offset = clause->try_offset;
8314                         try_bb->try_start = TRUE;
8315                         try_bb->region = ((i + 1) << 8) | clause->flags;
8316                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8317                         tblock->real_offset = clause->handler_offset;
8318                         tblock->flags |= BB_EXCEPTION_HANDLER;
8319
8320                         /*
8321                          * Linking the try block with the EH block hinders inlining as we won't be able to
8322                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8323                          */
8324                         if (COMPILE_LLVM (cfg))
8325                                 link_bblock (cfg, try_bb, tblock);
8326
8327                         if (*(ip + clause->handler_offset) == CEE_POP)
8328                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8329
8330                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8331                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8332                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8333                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8334                                 MONO_ADD_INS (tblock, ins);
8335
8336                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8337                                         /* finally clauses already have a seq point */
8338                                         /* seq points for filter clauses are emitted below */
8339                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8340                                         MONO_ADD_INS (tblock, ins);
8341                                 }
8342
8343                                 /* todo: is a fault block unsafe to optimize? */
8344                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8345                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8346                         }
8347
8348                         /*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);
8349                           while (p < end) {
8350                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8351                           }*/
8352                         /* catch and filter blocks get the exception object on the stack */
8353                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8354                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8355
8356                                 /* mostly like handle_stack_args (), but just sets the input args */
8357                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8358                                 tblock->in_scount = 1;
8359                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8360                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8361
8362                                 cfg->cbb = tblock;
8363
8364 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8365                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8366                                 if (!cfg->compile_llvm) {
8367                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8368                                         ins->dreg = tblock->in_stack [0]->dreg;
8369                                         MONO_ADD_INS (tblock, ins);
8370                                 }
8371 #else
8372                                 MonoInst *dummy_use;
8373
8374                                 /*
8375                                  * Add a dummy use for the exvar so its liveness info will be
8376                                  * correct.
8377                                  */
8378                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8379 #endif
8380
8381                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8382                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8383                                         MONO_ADD_INS (tblock, ins);
8384                                 }
8385
8386                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8387                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8388                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8389                                         tblock->real_offset = clause->data.filter_offset;
8390                                         tblock->in_scount = 1;
8391                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8392                                         /* The filter block shares the exvar with the handler block */
8393                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8394                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8395                                         MONO_ADD_INS (tblock, ins);
8396                                 }
8397                         }
8398
8399                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8400                                         clause->data.catch_class &&
8401                                         cfg->gshared &&
8402                                         mono_class_check_context_used (clause->data.catch_class)) {
8403                                 /*
8404                                  * In shared generic code with catch
8405                                  * clauses containing type variables
8406                                  * the exception handling code has to
8407                                  * be able to get to the rgctx.
8408                                  * Therefore we have to make sure that
8409                                  * the vtable/mrgctx argument (for
8410                                  * static or generic methods) or the
8411                                  * "this" argument (for non-static
8412                                  * methods) are live.
8413                                  */
8414                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8415                                                 mini_method_get_context (method)->method_inst ||
8416                                                 method->klass->valuetype) {
8417                                         mono_get_vtable_var (cfg);
8418                                 } else {
8419                                         MonoInst *dummy_use;
8420
8421                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8422                                 }
8423                         }
8424                 }
8425         } else {
8426                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8427                 cfg->cbb = start_bblock;
8428                 cfg->args = arg_array;
8429                 mono_save_args (cfg, sig, inline_args);
8430         }
8431
8432         /* FIRST CODE BLOCK */
8433         NEW_BBLOCK (cfg, tblock);
8434         tblock->cil_code = ip;
8435         cfg->cbb = tblock;
8436         cfg->ip = ip;
8437
8438         ADD_BBLOCK (cfg, tblock);
8439
8440         if (cfg->method == method) {
8441                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8442                 if (breakpoint_id) {
8443                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8444                         MONO_ADD_INS (cfg->cbb, ins);
8445                 }
8446         }
8447
8448         /* we use a separate basic block for the initialization code */
8449         NEW_BBLOCK (cfg, init_localsbb);
8450         cfg->bb_init = init_localsbb;
8451         init_localsbb->real_offset = cfg->real_offset;
8452         start_bblock->next_bb = init_localsbb;
8453         init_localsbb->next_bb = cfg->cbb;
8454         link_bblock (cfg, start_bblock, init_localsbb);
8455         link_bblock (cfg, init_localsbb, cfg->cbb);
8456
8457         cfg->cbb = init_localsbb;
8458
8459         if (cfg->gsharedvt && cfg->method == method) {
8460                 MonoGSharedVtMethodInfo *info;
8461                 MonoInst *var, *locals_var;
8462                 int dreg;
8463
8464                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8465                 info->method = cfg->method;
8466                 info->count_entries = 16;
8467                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8468                 cfg->gsharedvt_info = info;
8469
8470                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8471                 /* prevent it from being register allocated */
8472                 //var->flags |= MONO_INST_VOLATILE;
8473                 cfg->gsharedvt_info_var = var;
8474
8475                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8476                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8477
8478                 /* Allocate locals */
8479                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8480                 /* prevent it from being register allocated */
8481                 //locals_var->flags |= MONO_INST_VOLATILE;
8482                 cfg->gsharedvt_locals_var = locals_var;
8483
8484                 dreg = alloc_ireg (cfg);
8485                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8486
8487                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8488                 ins->dreg = locals_var->dreg;
8489                 ins->sreg1 = dreg;
8490                 MONO_ADD_INS (cfg->cbb, ins);
8491                 cfg->gsharedvt_locals_var_ins = ins;
8492
8493                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8494                 /*
8495                 if (init_locals)
8496                         ins->flags |= MONO_INST_INIT;
8497                 */
8498         }
8499
8500         if (mono_security_core_clr_enabled ()) {
8501                 /* check if this is native code, e.g. an icall or a p/invoke */
8502                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8503                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8504                         if (wrapped) {
8505                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8506                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8507
8508                                 /* if this ia a native call then it can only be JITted from platform code */
8509                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8510                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8511                                                 MonoException *ex = icall ? mono_get_exception_security () :
8512                                                         mono_get_exception_method_access ();
8513                                                 emit_throw_exception (cfg, ex);
8514                                         }
8515                                 }
8516                         }
8517                 }
8518         }
8519
8520         CHECK_CFG_EXCEPTION;
8521
8522         if (header->code_size == 0)
8523                 UNVERIFIED;
8524
8525         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8526                 ip = err_pos;
8527                 UNVERIFIED;
8528         }
8529
8530         if (cfg->method == method)
8531                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8532
8533         for (n = 0; n < header->num_locals; ++n) {
8534                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8535                         UNVERIFIED;
8536         }
8537         class_inits = NULL;
8538
8539         /* We force the vtable variable here for all shared methods
8540            for the possibility that they might show up in a stack
8541            trace where their exact instantiation is needed. */
8542         if (cfg->gshared && method == cfg->method) {
8543                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8544                                 mini_method_get_context (method)->method_inst ||
8545                                 method->klass->valuetype) {
8546                         mono_get_vtable_var (cfg);
8547                 } else {
8548                         /* FIXME: Is there a better way to do this?
8549                            We need the variable live for the duration
8550                            of the whole method. */
8551                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8552                 }
8553         }
8554
8555         /* add a check for this != NULL to inlined methods */
8556         if (is_virtual_call) {
8557                 MonoInst *arg_ins;
8558
8559                 NEW_ARGLOAD (cfg, arg_ins, 0);
8560                 MONO_ADD_INS (cfg->cbb, arg_ins);
8561                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8562         }
8563
8564         skip_dead_blocks = !dont_verify;
8565         if (skip_dead_blocks) {
8566                 original_bb = bb = mono_basic_block_split (method, &cfg->error);
8567                 CHECK_CFG_ERROR;
8568                 g_assert (bb);
8569         }
8570
8571         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8572         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8573
8574         ins_flag = 0;
8575         start_new_bblock = 0;
8576         while (ip < end) {
8577                 if (cfg->method == method)
8578                         cfg->real_offset = ip - header->code;
8579                 else
8580                         cfg->real_offset = inline_offset;
8581                 cfg->ip = ip;
8582
8583                 context_used = 0;
8584
8585                 if (start_new_bblock) {
8586                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8587                         if (start_new_bblock == 2) {
8588                                 g_assert (ip == tblock->cil_code);
8589                         } else {
8590                                 GET_BBLOCK (cfg, tblock, ip);
8591                         }
8592                         cfg->cbb->next_bb = tblock;
8593                         cfg->cbb = tblock;
8594                         start_new_bblock = 0;
8595                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8596                                 if (cfg->verbose_level > 3)
8597                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8598                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8599                                 *sp++ = ins;
8600                         }
8601                         if (class_inits)
8602                                 g_slist_free (class_inits);
8603                         class_inits = NULL;
8604                 } else {
8605                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8606                                 link_bblock (cfg, cfg->cbb, tblock);
8607                                 if (sp != stack_start) {
8608                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8609                                         sp = stack_start;
8610                                         CHECK_UNVERIFIABLE (cfg);
8611                                 }
8612                                 cfg->cbb->next_bb = tblock;
8613                                 cfg->cbb = tblock;
8614                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8615                                         if (cfg->verbose_level > 3)
8616                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8617                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8618                                         *sp++ = ins;
8619                                 }
8620                                 g_slist_free (class_inits);
8621                                 class_inits = NULL;
8622                         }
8623                 }
8624
8625                 if (skip_dead_blocks) {
8626                         int ip_offset = ip - header->code;
8627
8628                         if (ip_offset == bb->end)
8629                                 bb = bb->next;
8630
8631                         if (bb->dead) {
8632                                 int op_size = mono_opcode_size (ip, end);
8633                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8634
8635                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8636
8637                                 if (ip_offset + op_size == bb->end) {
8638                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8639                                         MONO_ADD_INS (cfg->cbb, ins);
8640                                         start_new_bblock = 1;
8641                                 }
8642
8643                                 ip += op_size;
8644                                 continue;
8645                         }
8646                 }
8647                 /*
8648                  * Sequence points are points where the debugger can place a breakpoint.
8649                  * Currently, we generate these automatically at points where the IL
8650                  * stack is empty.
8651                  */
8652                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8653                         /*
8654                          * Make methods interruptable at the beginning, and at the targets of
8655                          * backward branches.
8656                          * Also, do this at the start of every bblock in methods with clauses too,
8657                          * to be able to handle instructions with inprecise control flow like
8658                          * throw/endfinally.
8659                          * Backward branches are handled at the end of method-to-ir ().
8660                          */
8661                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8662                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8663
8664                         /* Avoid sequence points on empty IL like .volatile */
8665                         // FIXME: Enable this
8666                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8667                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8668                         if ((sp != stack_start) && !sym_seq_point)
8669                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8670                         MONO_ADD_INS (cfg->cbb, ins);
8671
8672                         if (sym_seq_points)
8673                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8674                 }
8675
8676                 cfg->cbb->real_offset = cfg->real_offset;
8677
8678                 if ((cfg->method == method) && cfg->coverage_info) {
8679                         guint32 cil_offset = ip - header->code;
8680                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8681
8682                         /* TODO: Use an increment here */
8683 #if defined(TARGET_X86)
8684                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8685                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8686                         ins->inst_imm = 1;
8687                         MONO_ADD_INS (cfg->cbb, ins);
8688 #else
8689                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8690                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8691 #endif
8692                 }
8693
8694                 if (cfg->verbose_level > 3)
8695                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8696
8697                 switch (*ip) {
8698                 case CEE_NOP:
8699                         if (seq_points && !sym_seq_points && sp != stack_start) {
8700                                 /*
8701                                  * The C# compiler uses these nops to notify the JIT that it should
8702                                  * insert seq points.
8703                                  */
8704                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8705                                 MONO_ADD_INS (cfg->cbb, ins);
8706                         }
8707                         if (cfg->keep_cil_nops)
8708                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8709                         else
8710                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8711                         ip++;
8712                         MONO_ADD_INS (cfg->cbb, ins);
8713                         break;
8714                 case CEE_BREAK:
8715                         if (should_insert_brekpoint (cfg->method)) {
8716                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8717                         } else {
8718                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8719                         }
8720                         ip++;
8721                         MONO_ADD_INS (cfg->cbb, ins);
8722                         break;
8723                 case CEE_LDARG_0:
8724                 case CEE_LDARG_1:
8725                 case CEE_LDARG_2:
8726                 case CEE_LDARG_3:
8727                         CHECK_STACK_OVF (1);
8728                         n = (*ip)-CEE_LDARG_0;
8729                         CHECK_ARG (n);
8730                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8731                         ip++;
8732                         *sp++ = ins;
8733                         break;
8734                 case CEE_LDLOC_0:
8735                 case CEE_LDLOC_1:
8736                 case CEE_LDLOC_2:
8737                 case CEE_LDLOC_3:
8738                         CHECK_STACK_OVF (1);
8739                         n = (*ip)-CEE_LDLOC_0;
8740                         CHECK_LOCAL (n);
8741                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8742                         ip++;
8743                         *sp++ = ins;
8744                         break;
8745                 case CEE_STLOC_0:
8746                 case CEE_STLOC_1:
8747                 case CEE_STLOC_2:
8748                 case CEE_STLOC_3: {
8749                         CHECK_STACK (1);
8750                         n = (*ip)-CEE_STLOC_0;
8751                         CHECK_LOCAL (n);
8752                         --sp;
8753                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8754                                 UNVERIFIED;
8755                         emit_stloc_ir (cfg, sp, header, n);
8756                         ++ip;
8757                         inline_costs += 1;
8758                         break;
8759                         }
8760                 case CEE_LDARG_S:
8761                         CHECK_OPSIZE (2);
8762                         CHECK_STACK_OVF (1);
8763                         n = ip [1];
8764                         CHECK_ARG (n);
8765                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8766                         *sp++ = ins;
8767                         ip += 2;
8768                         break;
8769                 case CEE_LDARGA_S:
8770                         CHECK_OPSIZE (2);
8771                         CHECK_STACK_OVF (1);
8772                         n = ip [1];
8773                         CHECK_ARG (n);
8774                         NEW_ARGLOADA (cfg, ins, n);
8775                         MONO_ADD_INS (cfg->cbb, ins);
8776                         *sp++ = ins;
8777                         ip += 2;
8778                         break;
8779                 case CEE_STARG_S:
8780                         CHECK_OPSIZE (2);
8781                         CHECK_STACK (1);
8782                         --sp;
8783                         n = ip [1];
8784                         CHECK_ARG (n);
8785                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8786                                 UNVERIFIED;
8787                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8788                         ip += 2;
8789                         break;
8790                 case CEE_LDLOC_S:
8791                         CHECK_OPSIZE (2);
8792                         CHECK_STACK_OVF (1);
8793                         n = ip [1];
8794                         CHECK_LOCAL (n);
8795                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8796                         *sp++ = ins;
8797                         ip += 2;
8798                         break;
8799                 case CEE_LDLOCA_S: {
8800                         unsigned char *tmp_ip;
8801                         CHECK_OPSIZE (2);
8802                         CHECK_STACK_OVF (1);
8803                         CHECK_LOCAL (ip [1]);
8804
8805                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8806                                 ip = tmp_ip;
8807                                 inline_costs += 1;
8808                                 break;
8809                         }
8810
8811                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8812                         *sp++ = ins;
8813                         ip += 2;
8814                         break;
8815                 }
8816                 case CEE_STLOC_S:
8817                         CHECK_OPSIZE (2);
8818                         CHECK_STACK (1);
8819                         --sp;
8820                         CHECK_LOCAL (ip [1]);
8821                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8822                                 UNVERIFIED;
8823                         emit_stloc_ir (cfg, sp, header, ip [1]);
8824                         ip += 2;
8825                         inline_costs += 1;
8826                         break;
8827                 case CEE_LDNULL:
8828                         CHECK_STACK_OVF (1);
8829                         EMIT_NEW_PCONST (cfg, ins, NULL);
8830                         ins->type = STACK_OBJ;
8831                         ++ip;
8832                         *sp++ = ins;
8833                         break;
8834                 case CEE_LDC_I4_M1:
8835                         CHECK_STACK_OVF (1);
8836                         EMIT_NEW_ICONST (cfg, ins, -1);
8837                         ++ip;
8838                         *sp++ = ins;
8839                         break;
8840                 case CEE_LDC_I4_0:
8841                 case CEE_LDC_I4_1:
8842                 case CEE_LDC_I4_2:
8843                 case CEE_LDC_I4_3:
8844                 case CEE_LDC_I4_4:
8845                 case CEE_LDC_I4_5:
8846                 case CEE_LDC_I4_6:
8847                 case CEE_LDC_I4_7:
8848                 case CEE_LDC_I4_8:
8849                         CHECK_STACK_OVF (1);
8850                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8851                         ++ip;
8852                         *sp++ = ins;
8853                         break;
8854                 case CEE_LDC_I4_S:
8855                         CHECK_OPSIZE (2);
8856                         CHECK_STACK_OVF (1);
8857                         ++ip;
8858                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8859                         ++ip;
8860                         *sp++ = ins;
8861                         break;
8862                 case CEE_LDC_I4:
8863                         CHECK_OPSIZE (5);
8864                         CHECK_STACK_OVF (1);
8865                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8866                         ip += 5;
8867                         *sp++ = ins;
8868                         break;
8869                 case CEE_LDC_I8:
8870                         CHECK_OPSIZE (9);
8871                         CHECK_STACK_OVF (1);
8872                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8873                         ins->type = STACK_I8;
8874                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8875                         ++ip;
8876                         ins->inst_l = (gint64)read64 (ip);
8877                         MONO_ADD_INS (cfg->cbb, ins);
8878                         ip += 8;
8879                         *sp++ = ins;
8880                         break;
8881                 case CEE_LDC_R4: {
8882                         float *f;
8883                         gboolean use_aotconst = FALSE;
8884
8885 #ifdef TARGET_POWERPC
8886                         /* FIXME: Clean this up */
8887                         if (cfg->compile_aot)
8888                                 use_aotconst = TRUE;
8889 #endif
8890
8891                         /* FIXME: we should really allocate this only late in the compilation process */
8892                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8893                         CHECK_OPSIZE (5);
8894                         CHECK_STACK_OVF (1);
8895
8896                         if (use_aotconst) {
8897                                 MonoInst *cons;
8898                                 int dreg;
8899
8900                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8901
8902                                 dreg = alloc_freg (cfg);
8903                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8904                                 ins->type = cfg->r4_stack_type;
8905                         } else {
8906                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8907                                 ins->type = cfg->r4_stack_type;
8908                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8909                                 ins->inst_p0 = f;
8910                                 MONO_ADD_INS (cfg->cbb, ins);
8911                         }
8912                         ++ip;
8913                         readr4 (ip, f);
8914                         ip += 4;
8915                         *sp++ = ins;
8916                         break;
8917                 }
8918                 case CEE_LDC_R8: {
8919                         double *d;
8920                         gboolean use_aotconst = FALSE;
8921
8922 #ifdef TARGET_POWERPC
8923                         /* FIXME: Clean this up */
8924                         if (cfg->compile_aot)
8925                                 use_aotconst = TRUE;
8926 #endif
8927
8928                         /* FIXME: we should really allocate this only late in the compilation process */
8929                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8930                         CHECK_OPSIZE (9);
8931                         CHECK_STACK_OVF (1);
8932
8933                         if (use_aotconst) {
8934                                 MonoInst *cons;
8935                                 int dreg;
8936
8937                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8938
8939                                 dreg = alloc_freg (cfg);
8940                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8941                                 ins->type = STACK_R8;
8942                         } else {
8943                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8944                                 ins->type = STACK_R8;
8945                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8946                                 ins->inst_p0 = d;
8947                                 MONO_ADD_INS (cfg->cbb, ins);
8948                         }
8949                         ++ip;
8950                         readr8 (ip, d);
8951                         ip += 8;
8952                         *sp++ = ins;
8953                         break;
8954                 }
8955                 case CEE_DUP: {
8956                         MonoInst *temp, *store;
8957                         CHECK_STACK (1);
8958                         CHECK_STACK_OVF (1);
8959                         sp--;
8960                         ins = *sp;
8961
8962                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8963                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8964
8965                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8966                         *sp++ = ins;
8967
8968                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8969                         *sp++ = ins;
8970
8971                         ++ip;
8972                         inline_costs += 2;
8973                         break;
8974                 }
8975                 case CEE_POP:
8976                         CHECK_STACK (1);
8977                         ip++;
8978                         --sp;
8979
8980 #ifdef TARGET_X86
8981                         if (sp [0]->type == STACK_R8)
8982                                 /* we need to pop the value from the x86 FP stack */
8983                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8984 #endif
8985                         break;
8986                 case CEE_JMP: {
8987                         MonoCallInst *call;
8988                         MonoMethodSignature *fsig;
8989                         int i, n;
8990
8991                         INLINE_FAILURE ("jmp");
8992                         GSHAREDVT_FAILURE (*ip);
8993
8994                         CHECK_OPSIZE (5);
8995                         if (stack_start != sp)
8996                                 UNVERIFIED;
8997                         token = read32 (ip + 1);
8998                         /* FIXME: check the signature matches */
8999                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9000                         CHECK_CFG_ERROR;
9001
9002                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9003                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9004
9005                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9006
9007                         fsig = mono_method_signature (cmethod);
9008                         n = fsig->param_count + fsig->hasthis;
9009                         if (cfg->llvm_only) {
9010                                 MonoInst **args;
9011
9012                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9013                                 for (i = 0; i < n; ++i)
9014                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9015                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9016                                 /*
9017                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9018                                  * have to emit a normal return since llvm expects it.
9019                                  */
9020                                 if (cfg->ret)
9021                                         emit_setret (cfg, ins);
9022                                 MONO_INST_NEW (cfg, ins, OP_BR);
9023                                 ins->inst_target_bb = end_bblock;
9024                                 MONO_ADD_INS (cfg->cbb, ins);
9025                                 link_bblock (cfg, cfg->cbb, end_bblock);
9026                                 ip += 5;
9027                                 break;
9028                         } else if (cfg->backend->have_op_tail_call) {
9029                                 /* Handle tail calls similarly to calls */
9030                                 DISABLE_AOT (cfg);
9031
9032                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9033                                 call->method = cmethod;
9034                                 call->tail_call = TRUE;
9035                                 call->signature = mono_method_signature (cmethod);
9036                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9037                                 call->inst.inst_p0 = cmethod;
9038                                 for (i = 0; i < n; ++i)
9039                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9040
9041                                 mono_arch_emit_call (cfg, call);
9042                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9043                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9044                         } else {
9045                                 for (i = 0; i < num_args; ++i)
9046                                         /* Prevent arguments from being optimized away */
9047                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9048
9049                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9050                                 ins = (MonoInst*)call;
9051                                 ins->inst_p0 = cmethod;
9052                                 MONO_ADD_INS (cfg->cbb, ins);
9053                         }
9054
9055                         ip += 5;
9056                         start_new_bblock = 1;
9057                         break;
9058                 }
9059                 case CEE_CALLI: {
9060                         MonoInst *addr;
9061                         MonoMethodSignature *fsig;
9062
9063                         CHECK_OPSIZE (5);
9064                         token = read32 (ip + 1);
9065
9066                         ins = NULL;
9067
9068                         //GSHAREDVT_FAILURE (*ip);
9069                         cmethod = NULL;
9070                         CHECK_STACK (1);
9071                         --sp;
9072                         addr = *sp;
9073                         fsig = mini_get_signature (method, token, generic_context);
9074
9075                         if (method->dynamic && fsig->pinvoke) {
9076                                 MonoInst *args [3];
9077
9078                                 /*
9079                                  * This is a call through a function pointer using a pinvoke
9080                                  * signature. Have to create a wrapper and call that instead.
9081                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9082                                  * instead based on the signature.
9083                                  */
9084                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9085                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9086                                 args [2] = addr;
9087                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9088                         }
9089
9090                         n = fsig->param_count + fsig->hasthis;
9091
9092                         CHECK_STACK (n);
9093
9094                         //g_assert (!virtual_ || fsig->hasthis);
9095
9096                         sp -= n;
9097
9098                         inline_costs += 10 * num_calls++;
9099
9100                         /*
9101                          * Making generic calls out of gsharedvt methods.
9102                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9103                          * patching gshared method addresses into a gsharedvt method.
9104                          */
9105                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9106                                 /*
9107                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9108                                  */
9109                                 MonoInst *callee = addr;
9110
9111                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9112                                         /* Not tested */
9113                                         GSHAREDVT_FAILURE (*ip);
9114
9115                                 if (cfg->llvm_only)
9116                                         // FIXME:
9117                                         GSHAREDVT_FAILURE (*ip);
9118
9119                                 addr = emit_get_rgctx_sig (cfg, context_used,
9120                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9121                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9122                                 goto calli_end;
9123                         }
9124
9125                         /* Prevent inlining of methods with indirect calls */
9126                         INLINE_FAILURE ("indirect call");
9127
9128                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9129                                 MonoJumpInfoType info_type;
9130                                 gpointer info_data;
9131
9132                                 /*
9133                                  * Instead of emitting an indirect call, emit a direct call
9134                                  * with the contents of the aotconst as the patch info.
9135                                  */
9136                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9137                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9138                                         info_data = addr->inst_p0;
9139                                 } else {
9140                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9141                                         info_data = addr->inst_right->inst_left;
9142                                 }
9143
9144                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR || info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9145                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9146                                         NULLIFY_INS (addr);
9147                                         goto calli_end;
9148                                 }
9149                         }
9150                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9151
9152                         calli_end:
9153
9154                         /* End of call, INS should contain the result of the call, if any */
9155
9156                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9157                                 g_assert (ins);
9158                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9159                         }
9160
9161                         CHECK_CFG_EXCEPTION;
9162
9163                         ip += 5;
9164                         ins_flag = 0;
9165                         constrained_class = NULL;
9166                         break;
9167                 }
9168                 case CEE_CALL:
9169                 case CEE_CALLVIRT: {
9170                         MonoInst *addr = NULL;
9171                         MonoMethodSignature *fsig = NULL;
9172                         int array_rank = 0;
9173                         int virtual_ = *ip == CEE_CALLVIRT;
9174                         gboolean pass_imt_from_rgctx = FALSE;
9175                         MonoInst *imt_arg = NULL;
9176                         MonoInst *keep_this_alive = NULL;
9177                         gboolean pass_vtable = FALSE;
9178                         gboolean pass_mrgctx = FALSE;
9179                         MonoInst *vtable_arg = NULL;
9180                         gboolean check_this = FALSE;
9181                         gboolean supported_tail_call = FALSE;
9182                         gboolean tail_call = FALSE;
9183                         gboolean need_seq_point = FALSE;
9184                         guint32 call_opcode = *ip;
9185                         gboolean emit_widen = TRUE;
9186                         gboolean push_res = TRUE;
9187                         gboolean skip_ret = FALSE;
9188                         gboolean delegate_invoke = FALSE;
9189                         gboolean direct_icall = FALSE;
9190                         gboolean constrained_partial_call = FALSE;
9191                         MonoMethod *cil_method;
9192
9193                         CHECK_OPSIZE (5);
9194                         token = read32 (ip + 1);
9195
9196                         ins = NULL;
9197
9198                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9199                         CHECK_CFG_ERROR;
9200
9201                         cil_method = cmethod;
9202
9203                         if (constrained_class) {
9204                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9205                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9206                                                 g_assert (!cmethod->klass->valuetype);
9207                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9208                                                         constrained_partial_call = TRUE;
9209                                         }
9210                                 }
9211
9212                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9213                                         if (cfg->verbose_level > 2)
9214                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9215                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9216                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9217                                                   cfg->gshared)) {
9218                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9219                                                 CHECK_CFG_ERROR;
9220                                         }
9221                                 } else {
9222                                         if (cfg->verbose_level > 2)
9223                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9224
9225                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9226                                                 /*
9227                                                  * This is needed since get_method_constrained can't find
9228                                                  * the method in klass representing a type var.
9229                                                  * The type var is guaranteed to be a reference type in this
9230                                                  * case.
9231                                                  */
9232                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9233                                                         g_assert (!cmethod->klass->valuetype);
9234                                         } else {
9235                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9236                                                 CHECK_CFG_ERROR;
9237                                         }
9238                                 }
9239                         }
9240
9241                         if (!cmethod || mono_loader_get_last_error ()) {
9242                                 if (mono_loader_get_last_error ()) {
9243                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
9244                                         mono_error_set_from_loader_error (&cfg->error);
9245                                         CHECK_CFG_ERROR;
9246                                 } else {
9247                                         LOAD_ERROR;
9248                                 }
9249                         }
9250                         if (!dont_verify && !cfg->skip_visibility) {
9251                                 MonoMethod *target_method = cil_method;
9252                                 if (method->is_inflated) {
9253                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9254                                         CHECK_CFG_ERROR;
9255                                 }
9256                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9257                                         !mono_method_can_access_method (method, cil_method))
9258                                         METHOD_ACCESS_FAILURE (method, cil_method);
9259                         }
9260
9261                         if (mono_security_core_clr_enabled ())
9262                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9263
9264                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9265                                 /* MS.NET seems to silently convert this to a callvirt */
9266                                 virtual_ = 1;
9267
9268                         {
9269                                 /*
9270                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9271                                  * converts to a callvirt.
9272                                  *
9273                                  * tests/bug-515884.il is an example of this behavior
9274                                  */
9275                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9276                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9277                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9278                                         virtual_ = 1;
9279                         }
9280
9281                         if (!cmethod->klass->inited)
9282                                 if (!mono_class_init (cmethod->klass))
9283                                         TYPE_LOAD_ERROR (cmethod->klass);
9284
9285                         fsig = mono_method_signature (cmethod);
9286                         if (!fsig)
9287                                 LOAD_ERROR;
9288                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9289                                 mini_class_is_system_array (cmethod->klass)) {
9290                                 array_rank = cmethod->klass->rank;
9291                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9292                                 direct_icall = TRUE;
9293                         } else if (fsig->pinvoke) {
9294                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9295                                 fsig = mono_method_signature (wrapper);
9296                         } else if (constrained_class) {
9297                         } else {
9298                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9299                                 CHECK_CFG_ERROR;
9300                         }
9301
9302                         if (cfg->llvm_only && !cfg->method->wrapper_type)
9303                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9304
9305                         /* See code below */
9306                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9307                                 MonoBasicBlock *tbb;
9308
9309                                 GET_BBLOCK (cfg, tbb, ip + 5);
9310                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9311                                         /*
9312                                          * We want to extend the try block to cover the call, but we can't do it if the
9313                                          * call is made directly since its followed by an exception check.
9314                                          */
9315                                         direct_icall = FALSE;
9316                                 }
9317                         }
9318
9319                         mono_save_token_info (cfg, image, token, cil_method);
9320
9321                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9322                                 need_seq_point = TRUE;
9323
9324                         /* Don't support calls made using type arguments for now */
9325                         /*
9326                           if (cfg->gsharedvt) {
9327                           if (mini_is_gsharedvt_signature (fsig))
9328                           GSHAREDVT_FAILURE (*ip);
9329                           }
9330                         */
9331
9332                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9333                                 g_assert_not_reached ();
9334
9335                         n = fsig->param_count + fsig->hasthis;
9336
9337                         if (!cfg->gshared && cmethod->klass->generic_container)
9338                                 UNVERIFIED;
9339
9340                         if (!cfg->gshared)
9341                                 g_assert (!mono_method_check_context_used (cmethod));
9342
9343                         CHECK_STACK (n);
9344
9345                         //g_assert (!virtual_ || fsig->hasthis);
9346
9347                         sp -= n;
9348
9349                         /*
9350                          * We have the `constrained.' prefix opcode.
9351                          */
9352                         if (constrained_class) {
9353                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9354                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9355                                                 /* The 'Own method' case below */
9356                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9357                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9358                                         } else {
9359                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9360                                                 CHECK_CFG_EXCEPTION;
9361                                                 g_assert (ins);
9362                                                 goto call_end;
9363                                         }
9364                                 }
9365
9366                                 if (constrained_partial_call) {
9367                                         gboolean need_box = TRUE;
9368
9369                                         /*
9370                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9371                                          * called method is not known at compile time either. The called method could end up being
9372                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9373                                          * to box the receiver.
9374                                          * A simple solution would be to box always and make a normal virtual call, but that would
9375                                          * be bad performance wise.
9376                                          */
9377                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9378                                                 /*
9379                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9380                                                  */
9381                                                 need_box = FALSE;
9382                                         }
9383
9384                                         if (!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9385                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9386                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9387                                                 ins->klass = constrained_class;
9388                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9389                                                 CHECK_CFG_EXCEPTION;
9390                                         } else if (need_box) {
9391                                                 MonoInst *box_type;
9392                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9393                                                 MonoInst *nonbox_call;
9394
9395                                                 /*
9396                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9397                                                  * if needed.
9398                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9399                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9400                                                  */
9401                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9402
9403                                                 NEW_BBLOCK (cfg, is_ref_bb);
9404                                                 NEW_BBLOCK (cfg, end_bb);
9405
9406                                                 box_type = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE);
9407                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9408                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9409
9410                                                 /* Non-ref case */
9411                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9412
9413                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9414
9415                                                 /* Ref case */
9416                                                 MONO_START_BB (cfg, is_ref_bb);
9417                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9418                                                 ins->klass = constrained_class;
9419                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9420                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9421
9422                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9423
9424                                                 MONO_START_BB (cfg, end_bb);
9425                                                 cfg->cbb = end_bb;
9426
9427                                                 nonbox_call->dreg = ins->dreg;
9428                                                 goto call_end;
9429                                         } else {
9430                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9431                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9432                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9433                                                 goto call_end;
9434                                         }
9435                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9436                                         /*
9437                                          * The type parameter is instantiated as a valuetype,
9438                                          * but that type doesn't override the method we're
9439                                          * calling, so we need to box `this'.
9440                                          */
9441                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9442                                         ins->klass = constrained_class;
9443                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9444                                         CHECK_CFG_EXCEPTION;
9445                                 } else if (!constrained_class->valuetype) {
9446                                         int dreg = alloc_ireg_ref (cfg);
9447
9448                                         /*
9449                                          * The type parameter is instantiated as a reference
9450                                          * type.  We have a managed pointer on the stack, so
9451                                          * we need to dereference it here.
9452                                          */
9453                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9454                                         ins->type = STACK_OBJ;
9455                                         sp [0] = ins;
9456                                 } else {
9457                                         if (cmethod->klass->valuetype) {
9458                                                 /* Own method */
9459                                         } else {
9460                                                 /* Interface method */
9461                                                 int ioffset, slot;
9462
9463                                                 mono_class_setup_vtable (constrained_class);
9464                                                 CHECK_TYPELOAD (constrained_class);
9465                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9466                                                 if (ioffset == -1)
9467                                                         TYPE_LOAD_ERROR (constrained_class);
9468                                                 slot = mono_method_get_vtable_slot (cmethod);
9469                                                 if (slot == -1)
9470                                                         TYPE_LOAD_ERROR (cmethod->klass);
9471                                                 cmethod = constrained_class->vtable [ioffset + slot];
9472
9473                                                 if (cmethod->klass == mono_defaults.enum_class) {
9474                                                         /* Enum implements some interfaces, so treat this as the first case */
9475                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9476                                                         ins->klass = constrained_class;
9477                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9478                                                         CHECK_CFG_EXCEPTION;
9479                                                 }
9480                                         }
9481                                         virtual_ = 0;
9482                                 }
9483                                 constrained_class = NULL;
9484                         }
9485
9486                         if (check_call_signature (cfg, fsig, sp))
9487                                 UNVERIFIED;
9488
9489                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9490                                 delegate_invoke = TRUE;
9491
9492                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9493                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9494                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9495                                         emit_widen = FALSE;
9496                                 }
9497
9498                                 goto call_end;
9499                         }
9500
9501                         /*
9502                          * If the callee is a shared method, then its static cctor
9503                          * might not get called after the call was patched.
9504                          */
9505                         if (cfg->gshared && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9506                                 emit_class_init (cfg, cmethod->klass);
9507                                 CHECK_TYPELOAD (cmethod->klass);
9508                         }
9509
9510                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9511
9512                         if (cfg->gshared) {
9513                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9514
9515                                 context_used = mini_method_check_context_used (cfg, cmethod);
9516
9517                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9518                                         /* Generic method interface
9519                                            calls are resolved via a
9520                                            helper function and don't
9521                                            need an imt. */
9522                                         if (!cmethod_context || !cmethod_context->method_inst)
9523                                                 pass_imt_from_rgctx = TRUE;
9524                                 }
9525
9526                                 /*
9527                                  * If a shared method calls another
9528                                  * shared method then the caller must
9529                                  * have a generic sharing context
9530                                  * because the magic trampoline
9531                                  * requires it.  FIXME: We shouldn't
9532                                  * have to force the vtable/mrgctx
9533                                  * variable here.  Instead there
9534                                  * should be a flag in the cfg to
9535                                  * request a generic sharing context.
9536                                  */
9537                                 if (context_used &&
9538                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9539                                         mono_get_vtable_var (cfg);
9540                         }
9541
9542                         if (pass_vtable) {
9543                                 if (context_used) {
9544                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9545                                 } else {
9546                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9547
9548                                         CHECK_TYPELOAD (cmethod->klass);
9549                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9550                                 }
9551                         }
9552
9553                         if (pass_mrgctx) {
9554                                 g_assert (!vtable_arg);
9555
9556                                 if (!cfg->compile_aot) {
9557                                         /*
9558                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9559                                          * for type load errors before.
9560                                          */
9561                                         mono_class_setup_vtable (cmethod->klass);
9562                                         CHECK_TYPELOAD (cmethod->klass);
9563                                 }
9564
9565                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9566
9567                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9568                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9569                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9570                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9571                                         if (virtual_)
9572                                                 check_this = TRUE;
9573                                         virtual_ = 0;
9574                                 }
9575                         }
9576
9577                         if (pass_imt_from_rgctx) {
9578                                 g_assert (!pass_vtable);
9579
9580                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9581                                         cmethod, MONO_RGCTX_INFO_METHOD);
9582                         }
9583
9584                         if (check_this)
9585                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9586
9587                         /* Calling virtual generic methods */
9588                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9589                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9590                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9591                             fsig->generic_param_count &&
9592                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9593                                 !cfg->llvm_only) {
9594                                 MonoInst *this_temp, *this_arg_temp, *store;
9595                                 MonoInst *iargs [4];
9596
9597                                 g_assert (fsig->is_inflated);
9598
9599                                 /* Prevent inlining of methods that contain indirect calls */
9600                                 INLINE_FAILURE ("virtual generic call");
9601
9602                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9603                                         GSHAREDVT_FAILURE (*ip);
9604
9605                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9606                                         g_assert (!imt_arg);
9607                                         if (!context_used)
9608                                                 g_assert (cmethod->is_inflated);
9609                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9610                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9611                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9612                                 } else {
9613                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9614                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9615                                         MONO_ADD_INS (cfg->cbb, store);
9616
9617                                         /* FIXME: This should be a managed pointer */
9618                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9619
9620                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9621                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9622                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9623                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9624                                         addr = mono_emit_jit_icall (cfg,
9625                                                                                                 mono_helper_compile_generic_method, iargs);
9626
9627                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9628
9629                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9630                                 }
9631
9632                                 goto call_end;
9633                         }
9634
9635                         /*
9636                          * Implement a workaround for the inherent races involved in locking:
9637                          * Monitor.Enter ()
9638                          * try {
9639                          * } finally {
9640                          *    Monitor.Exit ()
9641                          * }
9642                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9643                          * try block, the Exit () won't be executed, see:
9644                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9645                          * To work around this, we extend such try blocks to include the last x bytes
9646                          * of the Monitor.Enter () call.
9647                          */
9648                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9649                                 MonoBasicBlock *tbb;
9650
9651                                 GET_BBLOCK (cfg, tbb, ip + 5);
9652                                 /*
9653                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9654                                  * from Monitor.Enter like ArgumentNullException.
9655                                  */
9656                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9657                                         /* Mark this bblock as needing to be extended */
9658                                         tbb->extend_try_block = TRUE;
9659                                 }
9660                         }
9661
9662                         /* Conversion to a JIT intrinsic */
9663                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9664                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9665                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9666                                         emit_widen = FALSE;
9667                                 }
9668                                 goto call_end;
9669                         }
9670
9671                         /* Inlining */
9672                         if ((cfg->opt & MONO_OPT_INLINE) &&
9673                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9674                             mono_method_check_inlining (cfg, cmethod)) {
9675                                 int costs;
9676                                 gboolean always = FALSE;
9677
9678                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9679                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9680                                         /* Prevent inlining of methods that call wrappers */
9681                                         INLINE_FAILURE ("wrapper call");
9682                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9683                                         always = TRUE;
9684                                 }
9685
9686                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9687                                 if (costs) {
9688                                         cfg->real_offset += 5;
9689
9690                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9691                                                 /* *sp is already set by inline_method */
9692                                                 sp++;
9693                                                 push_res = FALSE;
9694                                         }
9695
9696                                         inline_costs += costs;
9697
9698                                         goto call_end;
9699                                 }
9700                         }
9701
9702                         /* Tail recursion elimination */
9703                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9704                                 gboolean has_vtargs = FALSE;
9705                                 int i;
9706
9707                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9708                                 INLINE_FAILURE ("tail call");
9709
9710                                 /* keep it simple */
9711                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9712                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9713                                                 has_vtargs = TRUE;
9714                                 }
9715
9716                                 if (!has_vtargs) {
9717                                         for (i = 0; i < n; ++i)
9718                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9719                                         MONO_INST_NEW (cfg, ins, OP_BR);
9720                                         MONO_ADD_INS (cfg->cbb, ins);
9721                                         tblock = start_bblock->out_bb [0];
9722                                         link_bblock (cfg, cfg->cbb, tblock);
9723                                         ins->inst_target_bb = tblock;
9724                                         start_new_bblock = 1;
9725
9726                                         /* skip the CEE_RET, too */
9727                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9728                                                 skip_ret = TRUE;
9729                                         push_res = FALSE;
9730                                         goto call_end;
9731                                 }
9732                         }
9733
9734                         inline_costs += 10 * num_calls++;
9735
9736                         /*
9737                          * Making generic calls out of gsharedvt methods.
9738                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9739                          * patching gshared method addresses into a gsharedvt method.
9740                          */
9741                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9742                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9743                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9744                                 MonoRgctxInfoType info_type;
9745
9746                                 if (virtual_) {
9747                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9748                                                 //GSHAREDVT_FAILURE (*ip);
9749                                         // disable for possible remoting calls
9750                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9751                                                 GSHAREDVT_FAILURE (*ip);
9752                                         if (fsig->generic_param_count) {
9753                                                 /* virtual generic call */
9754                                                 g_assert (!imt_arg);
9755                                                 /* Same as the virtual generic case above */
9756                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9757                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9758                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9759                                                 vtable_arg = NULL;
9760                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9761                                                 /* This can happen when we call a fully instantiated iface method */
9762                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9763                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9764                                                 vtable_arg = NULL;
9765                                         }
9766                                 }
9767
9768                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9769                                         keep_this_alive = sp [0];
9770
9771                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9772                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9773                                 else
9774                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9775                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9776
9777                                 if (cfg->llvm_only) {
9778                                         // FIXME: Avoid initializing vtable_arg
9779                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9780                                 } else {
9781                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9782                                 }
9783                                 goto call_end;
9784                         }
9785
9786                         /* Generic sharing */
9787
9788                         /*
9789                          * Use this if the callee is gsharedvt sharable too, since
9790                          * at runtime we might find an instantiation so the call cannot
9791                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9792                          */
9793                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9794                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9795                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9796                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9797                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9798                                 INLINE_FAILURE ("gshared");
9799
9800                                 g_assert (cfg->gshared && cmethod);
9801                                 g_assert (!addr);
9802
9803                                 /*
9804                                  * We are compiling a call to a
9805                                  * generic method from shared code,
9806                                  * which means that we have to look up
9807                                  * the method in the rgctx and do an
9808                                  * indirect call.
9809                                  */
9810                                 if (fsig->hasthis)
9811                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9812
9813                                 if (cfg->llvm_only) {
9814                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9815                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9816                                         else
9817                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9818                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9819                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9820                                 } else {
9821                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9822                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9823                                 }
9824                                 goto call_end;
9825                         }
9826
9827                         /* Direct calls to icalls */
9828                         if (direct_icall) {
9829                                 MonoMethod *wrapper;
9830                                 int costs;
9831
9832                                 /* Inline the wrapper */
9833                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9834
9835                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9836                                 g_assert (costs > 0);
9837                                 cfg->real_offset += 5;
9838
9839                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9840                                         /* *sp is already set by inline_method */
9841                                         sp++;
9842                                         push_res = FALSE;
9843                                 }
9844
9845                                 inline_costs += costs;
9846
9847                                 goto call_end;
9848                         }
9849
9850                         /* Array methods */
9851                         if (array_rank) {
9852                                 MonoInst *addr;
9853
9854                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9855                                         MonoInst *val = sp [fsig->param_count];
9856
9857                                         if (val->type == STACK_OBJ) {
9858                                                 MonoInst *iargs [2];
9859
9860                                                 iargs [0] = sp [0];
9861                                                 iargs [1] = val;
9862
9863                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9864                                         }
9865
9866                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9867                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9868                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9869                                                 emit_write_barrier (cfg, addr, val);
9870                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9871                                                 GSHAREDVT_FAILURE (*ip);
9872                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9873                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9874
9875                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9876                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9877                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9878                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9879                                         CHECK_TYPELOAD (cmethod->klass);
9880
9881                                         readonly = FALSE;
9882                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9883                                         ins = addr;
9884                                 } else {
9885                                         g_assert_not_reached ();
9886                                 }
9887
9888                                 emit_widen = FALSE;
9889                                 goto call_end;
9890                         }
9891
9892                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9893                         if (ins)
9894                                 goto call_end;
9895
9896                         /* Tail prefix / tail call optimization */
9897
9898                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9899                         /* FIXME: runtime generic context pointer for jumps? */
9900                         /* FIXME: handle this for generic sharing eventually */
9901                         if ((ins_flag & MONO_INST_TAILCALL) &&
9902                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9903                                 supported_tail_call = TRUE;
9904
9905                         if (supported_tail_call) {
9906                                 MonoCallInst *call;
9907
9908                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9909                                 INLINE_FAILURE ("tail call");
9910
9911                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9912
9913                                 if (cfg->backend->have_op_tail_call) {
9914                                         /* Handle tail calls similarly to normal calls */
9915                                         tail_call = TRUE;
9916                                 } else {
9917                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9918
9919                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9920                                         call->tail_call = TRUE;
9921                                         call->method = cmethod;
9922                                         call->signature = mono_method_signature (cmethod);
9923
9924                                         /*
9925                                          * We implement tail calls by storing the actual arguments into the
9926                                          * argument variables, then emitting a CEE_JMP.
9927                                          */
9928                                         for (i = 0; i < n; ++i) {
9929                                                 /* Prevent argument from being register allocated */
9930                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9931                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9932                                         }
9933                                         ins = (MonoInst*)call;
9934                                         ins->inst_p0 = cmethod;
9935                                         ins->inst_p1 = arg_array [0];
9936                                         MONO_ADD_INS (cfg->cbb, ins);
9937                                         link_bblock (cfg, cfg->cbb, end_bblock);
9938                                         start_new_bblock = 1;
9939
9940                                         // FIXME: Eliminate unreachable epilogs
9941
9942                                         /*
9943                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9944                                          * only reachable from this call.
9945                                          */
9946                                         GET_BBLOCK (cfg, tblock, ip + 5);
9947                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9948                                                 skip_ret = TRUE;
9949                                         push_res = FALSE;
9950
9951                                         goto call_end;
9952                                 }
9953                         }
9954
9955                         /*
9956                          * Synchronized wrappers.
9957                          * Its hard to determine where to replace a method with its synchronized
9958                          * wrapper without causing an infinite recursion. The current solution is
9959                          * to add the synchronized wrapper in the trampolines, and to
9960                          * change the called method to a dummy wrapper, and resolve that wrapper
9961                          * to the real method in mono_jit_compile_method ().
9962                          */
9963                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9964                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9965                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9966                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9967                         }
9968
9969                         /*
9970                          * Virtual calls in llvm-only mode.
9971                          */
9972                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9973                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9974                                 goto call_end;
9975                         }
9976
9977                         /* Common call */
9978                         INLINE_FAILURE ("call");
9979                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9980                                                                                           imt_arg, vtable_arg);
9981
9982                         if (tail_call && !cfg->llvm_only) {
9983                                 link_bblock (cfg, cfg->cbb, end_bblock);
9984                                 start_new_bblock = 1;
9985
9986                                 // FIXME: Eliminate unreachable epilogs
9987
9988                                 /*
9989                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9990                                  * only reachable from this call.
9991                                  */
9992                                 GET_BBLOCK (cfg, tblock, ip + 5);
9993                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9994                                         skip_ret = TRUE;
9995                                 push_res = FALSE;
9996                         }
9997
9998                         call_end:
9999
10000                         /* End of call, INS should contain the result of the call, if any */
10001
10002                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10003                                 g_assert (ins);
10004                                 if (emit_widen)
10005                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10006                                 else
10007                                         *sp++ = ins;
10008                         }
10009
10010                         if (keep_this_alive) {
10011                                 MonoInst *dummy_use;
10012
10013                                 /* See mono_emit_method_call_full () */
10014                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10015                         }
10016
10017                         CHECK_CFG_EXCEPTION;
10018
10019                         ip += 5;
10020                         if (skip_ret) {
10021                                 g_assert (*ip == CEE_RET);
10022                                 ip += 1;
10023                         }
10024                         ins_flag = 0;
10025                         constrained_class = NULL;
10026                         if (need_seq_point)
10027                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10028                         break;
10029                 }
10030                 case CEE_RET:
10031                         if (cfg->method != method) {
10032                                 /* return from inlined method */
10033                                 /*
10034                                  * If in_count == 0, that means the ret is unreachable due to
10035                                  * being preceeded by a throw. In that case, inline_method () will
10036                                  * handle setting the return value
10037                                  * (test case: test_0_inline_throw ()).
10038                                  */
10039                                 if (return_var && cfg->cbb->in_count) {
10040                                         MonoType *ret_type = mono_method_signature (method)->ret;
10041
10042                                         MonoInst *store;
10043                                         CHECK_STACK (1);
10044                                         --sp;
10045
10046                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10047                                                 UNVERIFIED;
10048
10049                                         //g_assert (returnvar != -1);
10050                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10051                                         cfg->ret_var_set = TRUE;
10052                                 }
10053                         } else {
10054                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10055
10056                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10057                                         emit_pop_lmf (cfg);
10058
10059                                 if (cfg->ret) {
10060                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10061
10062                                         if (seq_points && !sym_seq_points) {
10063                                                 /*
10064                                                  * Place a seq point here too even through the IL stack is not
10065                                                  * empty, so a step over on
10066                                                  * call <FOO>
10067                                                  * ret
10068                                                  * will work correctly.
10069                                                  */
10070                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10071                                                 MONO_ADD_INS (cfg->cbb, ins);
10072                                         }
10073
10074                                         g_assert (!return_var);
10075                                         CHECK_STACK (1);
10076                                         --sp;
10077
10078                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10079                                                 UNVERIFIED;
10080
10081                                         emit_setret (cfg, *sp);
10082                                 }
10083                         }
10084                         if (sp != stack_start)
10085                                 UNVERIFIED;
10086                         MONO_INST_NEW (cfg, ins, OP_BR);
10087                         ip++;
10088                         ins->inst_target_bb = end_bblock;
10089                         MONO_ADD_INS (cfg->cbb, ins);
10090                         link_bblock (cfg, cfg->cbb, end_bblock);
10091                         start_new_bblock = 1;
10092                         break;
10093                 case CEE_BR_S:
10094                         CHECK_OPSIZE (2);
10095                         MONO_INST_NEW (cfg, ins, OP_BR);
10096                         ip++;
10097                         target = ip + 1 + (signed char)(*ip);
10098                         ++ip;
10099                         GET_BBLOCK (cfg, tblock, target);
10100                         link_bblock (cfg, cfg->cbb, tblock);
10101                         ins->inst_target_bb = tblock;
10102                         if (sp != stack_start) {
10103                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10104                                 sp = stack_start;
10105                                 CHECK_UNVERIFIABLE (cfg);
10106                         }
10107                         MONO_ADD_INS (cfg->cbb, ins);
10108                         start_new_bblock = 1;
10109                         inline_costs += BRANCH_COST;
10110                         break;
10111                 case CEE_BEQ_S:
10112                 case CEE_BGE_S:
10113                 case CEE_BGT_S:
10114                 case CEE_BLE_S:
10115                 case CEE_BLT_S:
10116                 case CEE_BNE_UN_S:
10117                 case CEE_BGE_UN_S:
10118                 case CEE_BGT_UN_S:
10119                 case CEE_BLE_UN_S:
10120                 case CEE_BLT_UN_S:
10121                         CHECK_OPSIZE (2);
10122                         CHECK_STACK (2);
10123                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10124                         ip++;
10125                         target = ip + 1 + *(signed char*)ip;
10126                         ip++;
10127
10128                         ADD_BINCOND (NULL);
10129
10130                         sp = stack_start;
10131                         inline_costs += BRANCH_COST;
10132                         break;
10133                 case CEE_BR:
10134                         CHECK_OPSIZE (5);
10135                         MONO_INST_NEW (cfg, ins, OP_BR);
10136                         ip++;
10137
10138                         target = ip + 4 + (gint32)read32(ip);
10139                         ip += 4;
10140                         GET_BBLOCK (cfg, tblock, target);
10141                         link_bblock (cfg, cfg->cbb, tblock);
10142                         ins->inst_target_bb = tblock;
10143                         if (sp != stack_start) {
10144                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10145                                 sp = stack_start;
10146                                 CHECK_UNVERIFIABLE (cfg);
10147                         }
10148
10149                         MONO_ADD_INS (cfg->cbb, ins);
10150
10151                         start_new_bblock = 1;
10152                         inline_costs += BRANCH_COST;
10153                         break;
10154                 case CEE_BRFALSE_S:
10155                 case CEE_BRTRUE_S:
10156                 case CEE_BRFALSE:
10157                 case CEE_BRTRUE: {
10158                         MonoInst *cmp;
10159                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10160                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10161                         guint32 opsize = is_short ? 1 : 4;
10162
10163                         CHECK_OPSIZE (opsize);
10164                         CHECK_STACK (1);
10165                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10166                                 UNVERIFIED;
10167                         ip ++;
10168                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10169                         ip += opsize;
10170
10171                         sp--;
10172
10173                         GET_BBLOCK (cfg, tblock, target);
10174                         link_bblock (cfg, cfg->cbb, tblock);
10175                         GET_BBLOCK (cfg, tblock, ip);
10176                         link_bblock (cfg, cfg->cbb, tblock);
10177
10178                         if (sp != stack_start) {
10179                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10180                                 CHECK_UNVERIFIABLE (cfg);
10181                         }
10182
10183                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10184                         cmp->sreg1 = sp [0]->dreg;
10185                         type_from_op (cfg, cmp, sp [0], NULL);
10186                         CHECK_TYPE (cmp);
10187
10188 #if SIZEOF_REGISTER == 4
10189                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10190                                 /* Convert it to OP_LCOMPARE */
10191                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10192                                 ins->type = STACK_I8;
10193                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10194                                 ins->inst_l = 0;
10195                                 MONO_ADD_INS (cfg->cbb, ins);
10196                                 cmp->opcode = OP_LCOMPARE;
10197                                 cmp->sreg2 = ins->dreg;
10198                         }
10199 #endif
10200                         MONO_ADD_INS (cfg->cbb, cmp);
10201
10202                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10203                         type_from_op (cfg, ins, sp [0], NULL);
10204                         MONO_ADD_INS (cfg->cbb, ins);
10205                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10206                         GET_BBLOCK (cfg, tblock, target);
10207                         ins->inst_true_bb = tblock;
10208                         GET_BBLOCK (cfg, tblock, ip);
10209                         ins->inst_false_bb = tblock;
10210                         start_new_bblock = 2;
10211
10212                         sp = stack_start;
10213                         inline_costs += BRANCH_COST;
10214                         break;
10215                 }
10216                 case CEE_BEQ:
10217                 case CEE_BGE:
10218                 case CEE_BGT:
10219                 case CEE_BLE:
10220                 case CEE_BLT:
10221                 case CEE_BNE_UN:
10222                 case CEE_BGE_UN:
10223                 case CEE_BGT_UN:
10224                 case CEE_BLE_UN:
10225                 case CEE_BLT_UN:
10226                         CHECK_OPSIZE (5);
10227                         CHECK_STACK (2);
10228                         MONO_INST_NEW (cfg, ins, *ip);
10229                         ip++;
10230                         target = ip + 4 + (gint32)read32(ip);
10231                         ip += 4;
10232
10233                         ADD_BINCOND (NULL);
10234
10235                         sp = stack_start;
10236                         inline_costs += BRANCH_COST;
10237                         break;
10238                 case CEE_SWITCH: {
10239                         MonoInst *src1;
10240                         MonoBasicBlock **targets;
10241                         MonoBasicBlock *default_bblock;
10242                         MonoJumpInfoBBTable *table;
10243                         int offset_reg = alloc_preg (cfg);
10244                         int target_reg = alloc_preg (cfg);
10245                         int table_reg = alloc_preg (cfg);
10246                         int sum_reg = alloc_preg (cfg);
10247                         gboolean use_op_switch;
10248
10249                         CHECK_OPSIZE (5);
10250                         CHECK_STACK (1);
10251                         n = read32 (ip + 1);
10252                         --sp;
10253                         src1 = sp [0];
10254                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10255                                 UNVERIFIED;
10256
10257                         ip += 5;
10258                         CHECK_OPSIZE (n * sizeof (guint32));
10259                         target = ip + n * sizeof (guint32);
10260
10261                         GET_BBLOCK (cfg, default_bblock, target);
10262                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10263
10264                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10265                         for (i = 0; i < n; ++i) {
10266                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10267                                 targets [i] = tblock;
10268                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10269                                 ip += 4;
10270                         }
10271
10272                         if (sp != stack_start) {
10273                                 /*
10274                                  * Link the current bb with the targets as well, so handle_stack_args
10275                                  * will set their in_stack correctly.
10276                                  */
10277                                 link_bblock (cfg, cfg->cbb, default_bblock);
10278                                 for (i = 0; i < n; ++i)
10279                                         link_bblock (cfg, cfg->cbb, targets [i]);
10280
10281                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10282                                 sp = stack_start;
10283                                 CHECK_UNVERIFIABLE (cfg);
10284
10285                                 /* Undo the links */
10286                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10287                                 for (i = 0; i < n; ++i)
10288                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10289                         }
10290
10291                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10292                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10293
10294                         for (i = 0; i < n; ++i)
10295                                 link_bblock (cfg, cfg->cbb, targets [i]);
10296
10297                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10298                         table->table = targets;
10299                         table->table_size = n;
10300
10301                         use_op_switch = FALSE;
10302 #ifdef TARGET_ARM
10303                         /* ARM implements SWITCH statements differently */
10304                         /* FIXME: Make it use the generic implementation */
10305                         if (!cfg->compile_aot)
10306                                 use_op_switch = TRUE;
10307 #endif
10308
10309                         if (COMPILE_LLVM (cfg))
10310                                 use_op_switch = TRUE;
10311
10312                         cfg->cbb->has_jump_table = 1;
10313
10314                         if (use_op_switch) {
10315                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10316                                 ins->sreg1 = src1->dreg;
10317                                 ins->inst_p0 = table;
10318                                 ins->inst_many_bb = targets;
10319                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10320                                 MONO_ADD_INS (cfg->cbb, ins);
10321                         } else {
10322                                 if (sizeof (gpointer) == 8)
10323                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10324                                 else
10325                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10326
10327 #if SIZEOF_REGISTER == 8
10328                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10329                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10330 #endif
10331
10332                                 if (cfg->compile_aot) {
10333                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10334                                 } else {
10335                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10336                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10337                                         ins->inst_p0 = table;
10338                                         ins->dreg = table_reg;
10339                                         MONO_ADD_INS (cfg->cbb, ins);
10340                                 }
10341
10342                                 /* FIXME: Use load_memindex */
10343                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10344                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10345                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10346                         }
10347                         start_new_bblock = 1;
10348                         inline_costs += (BRANCH_COST * 2);
10349                         break;
10350                 }
10351                 case CEE_LDIND_I1:
10352                 case CEE_LDIND_U1:
10353                 case CEE_LDIND_I2:
10354                 case CEE_LDIND_U2:
10355                 case CEE_LDIND_I4:
10356                 case CEE_LDIND_U4:
10357                 case CEE_LDIND_I8:
10358                 case CEE_LDIND_I:
10359                 case CEE_LDIND_R4:
10360                 case CEE_LDIND_R8:
10361                 case CEE_LDIND_REF:
10362                         CHECK_STACK (1);
10363                         --sp;
10364
10365                         switch (*ip) {
10366                         case CEE_LDIND_R4:
10367                         case CEE_LDIND_R8:
10368                                 dreg = alloc_freg (cfg);
10369                                 break;
10370                         case CEE_LDIND_I8:
10371                                 dreg = alloc_lreg (cfg);
10372                                 break;
10373                         case CEE_LDIND_REF:
10374                                 dreg = alloc_ireg_ref (cfg);
10375                                 break;
10376                         default:
10377                                 dreg = alloc_preg (cfg);
10378                         }
10379
10380                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10381                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10382                         if (*ip == CEE_LDIND_R4)
10383                                 ins->type = cfg->r4_stack_type;
10384                         ins->flags |= ins_flag;
10385                         MONO_ADD_INS (cfg->cbb, ins);
10386                         *sp++ = ins;
10387                         if (ins_flag & MONO_INST_VOLATILE) {
10388                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10389                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10390                         }
10391                         ins_flag = 0;
10392                         ++ip;
10393                         break;
10394                 case CEE_STIND_REF:
10395                 case CEE_STIND_I1:
10396                 case CEE_STIND_I2:
10397                 case CEE_STIND_I4:
10398                 case CEE_STIND_I8:
10399                 case CEE_STIND_R4:
10400                 case CEE_STIND_R8:
10401                 case CEE_STIND_I:
10402                         CHECK_STACK (2);
10403                         sp -= 2;
10404
10405                         if (ins_flag & MONO_INST_VOLATILE) {
10406                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10407                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10408                         }
10409
10410                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10411                         ins->flags |= ins_flag;
10412                         ins_flag = 0;
10413
10414                         MONO_ADD_INS (cfg->cbb, ins);
10415
10416                         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)))
10417                                 emit_write_barrier (cfg, sp [0], sp [1]);
10418
10419                         inline_costs += 1;
10420                         ++ip;
10421                         break;
10422
10423                 case CEE_MUL:
10424                         CHECK_STACK (2);
10425
10426                         MONO_INST_NEW (cfg, ins, (*ip));
10427                         sp -= 2;
10428                         ins->sreg1 = sp [0]->dreg;
10429                         ins->sreg2 = sp [1]->dreg;
10430                         type_from_op (cfg, ins, sp [0], sp [1]);
10431                         CHECK_TYPE (ins);
10432                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10433
10434                         /* Use the immediate opcodes if possible */
10435                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10436                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10437                                 if (imm_opcode != -1) {
10438                                         ins->opcode = imm_opcode;
10439                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10440                                         ins->sreg2 = -1;
10441
10442                                         NULLIFY_INS (sp [1]);
10443                                 }
10444                         }
10445
10446                         MONO_ADD_INS ((cfg)->cbb, (ins));
10447
10448                         *sp++ = mono_decompose_opcode (cfg, ins);
10449                         ip++;
10450                         break;
10451                 case CEE_ADD:
10452                 case CEE_SUB:
10453                 case CEE_DIV:
10454                 case CEE_DIV_UN:
10455                 case CEE_REM:
10456                 case CEE_REM_UN:
10457                 case CEE_AND:
10458                 case CEE_OR:
10459                 case CEE_XOR:
10460                 case CEE_SHL:
10461                 case CEE_SHR:
10462                 case CEE_SHR_UN:
10463                         CHECK_STACK (2);
10464
10465                         MONO_INST_NEW (cfg, ins, (*ip));
10466                         sp -= 2;
10467                         ins->sreg1 = sp [0]->dreg;
10468                         ins->sreg2 = sp [1]->dreg;
10469                         type_from_op (cfg, ins, sp [0], sp [1]);
10470                         CHECK_TYPE (ins);
10471                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10472                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10473
10474                         /* FIXME: Pass opcode to is_inst_imm */
10475
10476                         /* Use the immediate opcodes if possible */
10477                         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)) {
10478                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10479                                 if (imm_opcode != -1) {
10480                                         ins->opcode = imm_opcode;
10481                                         if (sp [1]->opcode == OP_I8CONST) {
10482 #if SIZEOF_REGISTER == 8
10483                                                 ins->inst_imm = sp [1]->inst_l;
10484 #else
10485                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10486                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10487 #endif
10488                                         }
10489                                         else
10490                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10491                                         ins->sreg2 = -1;
10492
10493                                         /* Might be followed by an instruction added by add_widen_op */
10494                                         if (sp [1]->next == NULL)
10495                                                 NULLIFY_INS (sp [1]);
10496                                 }
10497                         }
10498                         MONO_ADD_INS ((cfg)->cbb, (ins));
10499
10500                         *sp++ = mono_decompose_opcode (cfg, ins);
10501                         ip++;
10502                         break;
10503                 case CEE_NEG:
10504                 case CEE_NOT:
10505                 case CEE_CONV_I1:
10506                 case CEE_CONV_I2:
10507                 case CEE_CONV_I4:
10508                 case CEE_CONV_R4:
10509                 case CEE_CONV_R8:
10510                 case CEE_CONV_U4:
10511                 case CEE_CONV_I8:
10512                 case CEE_CONV_U8:
10513                 case CEE_CONV_OVF_I8:
10514                 case CEE_CONV_OVF_U8:
10515                 case CEE_CONV_R_UN:
10516                         CHECK_STACK (1);
10517
10518                         /* Special case this earlier so we have long constants in the IR */
10519                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10520                                 int data = sp [-1]->inst_c0;
10521                                 sp [-1]->opcode = OP_I8CONST;
10522                                 sp [-1]->type = STACK_I8;
10523 #if SIZEOF_REGISTER == 8
10524                                 if ((*ip) == CEE_CONV_U8)
10525                                         sp [-1]->inst_c0 = (guint32)data;
10526                                 else
10527                                         sp [-1]->inst_c0 = data;
10528 #else
10529                                 sp [-1]->inst_ls_word = data;
10530                                 if ((*ip) == CEE_CONV_U8)
10531                                         sp [-1]->inst_ms_word = 0;
10532                                 else
10533                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10534 #endif
10535                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10536                         }
10537                         else {
10538                                 ADD_UNOP (*ip);
10539                         }
10540                         ip++;
10541                         break;
10542                 case CEE_CONV_OVF_I4:
10543                 case CEE_CONV_OVF_I1:
10544                 case CEE_CONV_OVF_I2:
10545                 case CEE_CONV_OVF_I:
10546                 case CEE_CONV_OVF_U:
10547                         CHECK_STACK (1);
10548
10549                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10550                                 ADD_UNOP (CEE_CONV_OVF_I8);
10551                                 ADD_UNOP (*ip);
10552                         } else {
10553                                 ADD_UNOP (*ip);
10554                         }
10555                         ip++;
10556                         break;
10557                 case CEE_CONV_OVF_U1:
10558                 case CEE_CONV_OVF_U2:
10559                 case CEE_CONV_OVF_U4:
10560                         CHECK_STACK (1);
10561
10562                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10563                                 ADD_UNOP (CEE_CONV_OVF_U8);
10564                                 ADD_UNOP (*ip);
10565                         } else {
10566                                 ADD_UNOP (*ip);
10567                         }
10568                         ip++;
10569                         break;
10570                 case CEE_CONV_OVF_I1_UN:
10571                 case CEE_CONV_OVF_I2_UN:
10572                 case CEE_CONV_OVF_I4_UN:
10573                 case CEE_CONV_OVF_I8_UN:
10574                 case CEE_CONV_OVF_U1_UN:
10575                 case CEE_CONV_OVF_U2_UN:
10576                 case CEE_CONV_OVF_U4_UN:
10577                 case CEE_CONV_OVF_U8_UN:
10578                 case CEE_CONV_OVF_I_UN:
10579                 case CEE_CONV_OVF_U_UN:
10580                 case CEE_CONV_U2:
10581                 case CEE_CONV_U1:
10582                 case CEE_CONV_I:
10583                 case CEE_CONV_U:
10584                         CHECK_STACK (1);
10585                         ADD_UNOP (*ip);
10586                         CHECK_CFG_EXCEPTION;
10587                         ip++;
10588                         break;
10589                 case CEE_ADD_OVF:
10590                 case CEE_ADD_OVF_UN:
10591                 case CEE_MUL_OVF:
10592                 case CEE_MUL_OVF_UN:
10593                 case CEE_SUB_OVF:
10594                 case CEE_SUB_OVF_UN:
10595                         CHECK_STACK (2);
10596                         ADD_BINOP (*ip);
10597                         ip++;
10598                         break;
10599                 case CEE_CPOBJ:
10600                         GSHAREDVT_FAILURE (*ip);
10601                         CHECK_OPSIZE (5);
10602                         CHECK_STACK (2);
10603                         token = read32 (ip + 1);
10604                         klass = mini_get_class (method, token, generic_context);
10605                         CHECK_TYPELOAD (klass);
10606                         sp -= 2;
10607                         if (generic_class_is_reference_type (cfg, klass)) {
10608                                 MonoInst *store, *load;
10609                                 int dreg = alloc_ireg_ref (cfg);
10610
10611                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10612                                 load->flags |= ins_flag;
10613                                 MONO_ADD_INS (cfg->cbb, load);
10614
10615                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10616                                 store->flags |= ins_flag;
10617                                 MONO_ADD_INS (cfg->cbb, store);
10618
10619                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10620                                         emit_write_barrier (cfg, sp [0], sp [1]);
10621                         } else {
10622                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10623                         }
10624                         ins_flag = 0;
10625                         ip += 5;
10626                         break;
10627                 case CEE_LDOBJ: {
10628                         int loc_index = -1;
10629                         int stloc_len = 0;
10630
10631                         CHECK_OPSIZE (5);
10632                         CHECK_STACK (1);
10633                         --sp;
10634                         token = read32 (ip + 1);
10635                         klass = mini_get_class (method, token, generic_context);
10636                         CHECK_TYPELOAD (klass);
10637
10638                         /* Optimize the common ldobj+stloc combination */
10639                         switch (ip [5]) {
10640                         case CEE_STLOC_S:
10641                                 loc_index = ip [6];
10642                                 stloc_len = 2;
10643                                 break;
10644                         case CEE_STLOC_0:
10645                         case CEE_STLOC_1:
10646                         case CEE_STLOC_2:
10647                         case CEE_STLOC_3:
10648                                 loc_index = ip [5] - CEE_STLOC_0;
10649                                 stloc_len = 1;
10650                                 break;
10651                         default:
10652                                 break;
10653                         }
10654
10655                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10656                                 CHECK_LOCAL (loc_index);
10657
10658                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10659                                 ins->dreg = cfg->locals [loc_index]->dreg;
10660                                 ins->flags |= ins_flag;
10661                                 ip += 5;
10662                                 ip += stloc_len;
10663                                 if (ins_flag & MONO_INST_VOLATILE) {
10664                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10665                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10666                                 }
10667                                 ins_flag = 0;
10668                                 break;
10669                         }
10670
10671                         /* Optimize the ldobj+stobj combination */
10672                         /* The reference case ends up being a load+store anyway */
10673                         /* Skip this if the operation is volatile. */
10674                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass) && !(ins_flag & MONO_INST_VOLATILE)) {
10675                                 CHECK_STACK (1);
10676
10677                                 sp --;
10678
10679                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10680
10681                                 ip += 5 + 5;
10682                                 ins_flag = 0;
10683                                 break;
10684                         }
10685
10686                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10687                         ins->flags |= ins_flag;
10688                         *sp++ = ins;
10689
10690                         if (ins_flag & MONO_INST_VOLATILE) {
10691                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10692                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10693                         }
10694
10695                         ip += 5;
10696                         ins_flag = 0;
10697                         inline_costs += 1;
10698                         break;
10699                 }
10700                 case CEE_LDSTR:
10701                         CHECK_STACK_OVF (1);
10702                         CHECK_OPSIZE (5);
10703                         n = read32 (ip + 1);
10704
10705                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10706                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10707                                 ins->type = STACK_OBJ;
10708                                 *sp = ins;
10709                         }
10710                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10711                                 MonoInst *iargs [1];
10712                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10713
10714                                 if (cfg->compile_aot)
10715                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10716                                 else
10717                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10718                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10719                         } else {
10720                                 if (cfg->opt & MONO_OPT_SHARED) {
10721                                         MonoInst *iargs [3];
10722
10723                                         if (cfg->compile_aot) {
10724                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10725                                         }
10726                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10727                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10728                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10729                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10730                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10731                                 } else {
10732                                         if (cfg->cbb->out_of_line) {
10733                                                 MonoInst *iargs [2];
10734
10735                                                 if (image == mono_defaults.corlib) {
10736                                                         /*
10737                                                          * Avoid relocations in AOT and save some space by using a
10738                                                          * version of helper_ldstr specialized to mscorlib.
10739                                                          */
10740                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10741                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10742                                                 } else {
10743                                                         /* Avoid creating the string object */
10744                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10745                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10746                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10747                                                 }
10748                                         }
10749                                         else
10750                                         if (cfg->compile_aot) {
10751                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10752                                                 *sp = ins;
10753                                                 MONO_ADD_INS (cfg->cbb, ins);
10754                                         }
10755                                         else {
10756                                                 NEW_PCONST (cfg, ins, NULL);
10757                                                 ins->type = STACK_OBJ;
10758                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10759                                                 if (!ins->inst_p0)
10760                                                         OUT_OF_MEMORY_FAILURE;
10761
10762                                                 *sp = ins;
10763                                                 MONO_ADD_INS (cfg->cbb, ins);
10764                                         }
10765                                 }
10766                         }
10767
10768                         sp++;
10769                         ip += 5;
10770                         break;
10771                 case CEE_NEWOBJ: {
10772                         MonoInst *iargs [2];
10773                         MonoMethodSignature *fsig;
10774                         MonoInst this_ins;
10775                         MonoInst *alloc;
10776                         MonoInst *vtable_arg = NULL;
10777
10778                         CHECK_OPSIZE (5);
10779                         token = read32 (ip + 1);
10780                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10781                         CHECK_CFG_ERROR;
10782
10783                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10784                         CHECK_CFG_ERROR;
10785
10786                         mono_save_token_info (cfg, image, token, cmethod);
10787
10788                         if (!mono_class_init (cmethod->klass))
10789                                 TYPE_LOAD_ERROR (cmethod->klass);
10790
10791                         context_used = mini_method_check_context_used (cfg, cmethod);
10792
10793                         if (mono_security_core_clr_enabled ())
10794                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10795
10796                         if (cfg->gshared && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
10797                                 emit_class_init (cfg, cmethod->klass);
10798                                 CHECK_TYPELOAD (cmethod->klass);
10799                         }
10800
10801                         /*
10802                         if (cfg->gsharedvt) {
10803                                 if (mini_is_gsharedvt_variable_signature (sig))
10804                                         GSHAREDVT_FAILURE (*ip);
10805                         }
10806                         */
10807
10808                         n = fsig->param_count;
10809                         CHECK_STACK (n);
10810
10811                         /*
10812                          * Generate smaller code for the common newobj <exception> instruction in
10813                          * argument checking code.
10814                          */
10815                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10816                                 is_exception_class (cmethod->klass) && n <= 2 &&
10817                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10818                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10819                                 MonoInst *iargs [3];
10820
10821                                 sp -= n;
10822
10823                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10824                                 switch (n) {
10825                                 case 0:
10826                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10827                                         break;
10828                                 case 1:
10829                                         iargs [1] = sp [0];
10830                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10831                                         break;
10832                                 case 2:
10833                                         iargs [1] = sp [0];
10834                                         iargs [2] = sp [1];
10835                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10836                                         break;
10837                                 default:
10838                                         g_assert_not_reached ();
10839                                 }
10840
10841                                 ip += 5;
10842                                 inline_costs += 5;
10843                                 break;
10844                         }
10845
10846                         /* move the args to allow room for 'this' in the first position */
10847                         while (n--) {
10848                                 --sp;
10849                                 sp [1] = sp [0];
10850                         }
10851
10852                         /* check_call_signature () requires sp[0] to be set */
10853                         this_ins.type = STACK_OBJ;
10854                         sp [0] = &this_ins;
10855                         if (check_call_signature (cfg, fsig, sp))
10856                                 UNVERIFIED;
10857
10858                         iargs [0] = NULL;
10859
10860                         if (mini_class_is_system_array (cmethod->klass)) {
10861                                 *sp = emit_get_rgctx_method (cfg, context_used,
10862                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10863
10864                                 /* Avoid varargs in the common case */
10865                                 if (fsig->param_count == 1)
10866                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10867                                 else if (fsig->param_count == 2)
10868                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10869                                 else if (fsig->param_count == 3)
10870                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10871                                 else if (fsig->param_count == 4)
10872                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10873                                 else
10874                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10875                         } else if (cmethod->string_ctor) {
10876                                 g_assert (!context_used);
10877                                 g_assert (!vtable_arg);
10878                                 /* we simply pass a null pointer */
10879                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10880                                 /* now call the string ctor */
10881                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10882                         } else {
10883                                 if (cmethod->klass->valuetype) {
10884                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10885                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10886                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10887
10888                                         alloc = NULL;
10889
10890                                         /*
10891                                          * The code generated by mini_emit_virtual_call () expects
10892                                          * iargs [0] to be a boxed instance, but luckily the vcall
10893                                          * will be transformed into a normal call there.
10894                                          */
10895                                 } else if (context_used) {
10896                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10897                                         *sp = alloc;
10898                                 } else {
10899                                         MonoVTable *vtable = NULL;
10900
10901                                         if (!cfg->compile_aot)
10902                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10903                                         CHECK_TYPELOAD (cmethod->klass);
10904
10905                                         /*
10906                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10907                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10908                                          * As a workaround, we call class cctors before allocating objects.
10909                                          */
10910                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10911                                                 emit_class_init (cfg, cmethod->klass);
10912                                                 if (cfg->verbose_level > 2)
10913                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10914                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10915                                         }
10916
10917                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10918                                         *sp = alloc;
10919                                 }
10920                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10921
10922                                 if (alloc)
10923                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10924
10925                                 /* Now call the actual ctor */
10926                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10927                                 CHECK_CFG_EXCEPTION;
10928                         }
10929
10930                         if (alloc == NULL) {
10931                                 /* Valuetype */
10932                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10933                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10934                                 *sp++= ins;
10935                         } else {
10936                                 *sp++ = alloc;
10937                         }
10938
10939                         ip += 5;
10940                         inline_costs += 5;
10941                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10942                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10943                         break;
10944                 }
10945                 case CEE_CASTCLASS:
10946                         CHECK_STACK (1);
10947                         --sp;
10948                         CHECK_OPSIZE (5);
10949                         token = read32 (ip + 1);
10950                         klass = mini_get_class (method, token, generic_context);
10951                         CHECK_TYPELOAD (klass);
10952                         if (sp [0]->type != STACK_OBJ)
10953                                 UNVERIFIED;
10954
10955                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10956                         CHECK_CFG_EXCEPTION;
10957
10958                         *sp ++ = ins;
10959                         ip += 5;
10960                         break;
10961                 case CEE_ISINST: {
10962                         CHECK_STACK (1);
10963                         --sp;
10964                         CHECK_OPSIZE (5);
10965                         token = read32 (ip + 1);
10966                         klass = mini_get_class (method, token, generic_context);
10967                         CHECK_TYPELOAD (klass);
10968                         if (sp [0]->type != STACK_OBJ)
10969                                 UNVERIFIED;
10970
10971                         context_used = mini_class_check_context_used (cfg, klass);
10972
10973                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10974                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10975                                 MonoInst *args [3];
10976                                 int idx;
10977
10978                                 /* obj */
10979                                 args [0] = *sp;
10980
10981                                 /* klass */
10982                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10983
10984                                 /* inline cache*/
10985                                 idx = get_castclass_cache_idx (cfg);
10986                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
10987
10988                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
10989                                 ip += 5;
10990                                 inline_costs += 2;
10991                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
10992                                 MonoMethod *mono_isinst;
10993                                 MonoInst *iargs [1];
10994                                 int costs;
10995
10996                                 mono_isinst = mono_marshal_get_isinst (klass);
10997                                 iargs [0] = sp [0];
10998
10999                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
11000                                                                            iargs, ip, cfg->real_offset, TRUE);
11001                                 CHECK_CFG_EXCEPTION;
11002                                 g_assert (costs > 0);
11003
11004                                 ip += 5;
11005                                 cfg->real_offset += 5;
11006
11007                                 *sp++= iargs [0];
11008
11009                                 inline_costs += costs;
11010                         }
11011                         else {
11012                                 ins = handle_isinst (cfg, klass, *sp, context_used);
11013                                 CHECK_CFG_EXCEPTION;
11014                                 *sp ++ = ins;
11015                                 ip += 5;
11016                         }
11017                         break;
11018                 }
11019                 case CEE_UNBOX_ANY: {
11020                         MonoInst *res, *addr;
11021
11022                         CHECK_STACK (1);
11023                         --sp;
11024                         CHECK_OPSIZE (5);
11025                         token = read32 (ip + 1);
11026                         klass = mini_get_class (method, token, generic_context);
11027                         CHECK_TYPELOAD (klass);
11028
11029                         mono_save_token_info (cfg, image, token, klass);
11030
11031                         context_used = mini_class_check_context_used (cfg, klass);
11032
11033                         if (mini_is_gsharedvt_klass (klass)) {
11034                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11035                                 inline_costs += 2;
11036                         } else if (generic_class_is_reference_type (cfg, klass)) {
11037                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
11038                                 CHECK_CFG_EXCEPTION;
11039                         } else if (mono_class_is_nullable (klass)) {
11040                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11041                         } else {
11042                                 addr = handle_unbox (cfg, klass, sp, context_used);
11043                                 /* LDOBJ */
11044                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11045                                 res = ins;
11046                                 inline_costs += 2;
11047                         }
11048
11049                         *sp ++ = res;
11050                         ip += 5;
11051                         break;
11052                 }
11053                 case CEE_BOX: {
11054                         MonoInst *val;
11055                         MonoClass *enum_class;
11056                         MonoMethod *has_flag;
11057
11058                         CHECK_STACK (1);
11059                         --sp;
11060                         val = *sp;
11061                         CHECK_OPSIZE (5);
11062                         token = read32 (ip + 1);
11063                         klass = mini_get_class (method, token, generic_context);
11064                         CHECK_TYPELOAD (klass);
11065
11066                         mono_save_token_info (cfg, image, token, klass);
11067
11068                         context_used = mini_class_check_context_used (cfg, klass);
11069
11070                         if (generic_class_is_reference_type (cfg, klass)) {
11071                                 *sp++ = val;
11072                                 ip += 5;
11073                                 break;
11074                         }
11075
11076                         if (klass == mono_defaults.void_class)
11077                                 UNVERIFIED;
11078                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11079                                 UNVERIFIED;
11080                         /* frequent check in generic code: box (struct), brtrue */
11081
11082                         /*
11083                          * Look for:
11084                          *
11085                          *   <push int/long ptr>
11086                          *   <push int/long>
11087                          *   box MyFlags
11088                          *   constrained. MyFlags
11089                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11090                          *
11091                          * If we find this sequence and the operand types on box and constrained
11092                          * are equal, we can emit a specialized instruction sequence instead of
11093                          * the very slow HasFlag () call.
11094                          */
11095                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11096                             /* Cheap checks first. */
11097                             ip + 5 + 6 + 5 < end &&
11098                             ip [5] == CEE_PREFIX1 &&
11099                             ip [6] == CEE_CONSTRAINED_ &&
11100                             ip [11] == CEE_CALLVIRT &&
11101                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11102                             mono_class_is_enum (klass) &&
11103                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11104                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11105                             has_flag->klass == mono_defaults.enum_class &&
11106                             !strcmp (has_flag->name, "HasFlag") &&
11107                             has_flag->signature->hasthis &&
11108                             has_flag->signature->param_count == 1) {
11109                                 CHECK_TYPELOAD (enum_class);
11110
11111                                 if (enum_class == klass) {
11112                                         MonoInst *enum_this, *enum_flag;
11113
11114                                         ip += 5 + 6 + 5;
11115                                         --sp;
11116
11117                                         enum_this = sp [0];
11118                                         enum_flag = sp [1];
11119
11120                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11121                                         break;
11122                                 }
11123                         }
11124
11125                         // FIXME: LLVM can't handle the inconsistent bb linking
11126                         if (!mono_class_is_nullable (klass) &&
11127                                 !mini_is_gsharedvt_klass (klass) &&
11128                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11129                                 (ip [5] == CEE_BRTRUE ||
11130                                  ip [5] == CEE_BRTRUE_S ||
11131                                  ip [5] == CEE_BRFALSE ||
11132                                  ip [5] == CEE_BRFALSE_S)) {
11133                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11134                                 int dreg;
11135                                 MonoBasicBlock *true_bb, *false_bb;
11136
11137                                 ip += 5;
11138
11139                                 if (cfg->verbose_level > 3) {
11140                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11141                                         printf ("<box+brtrue opt>\n");
11142                                 }
11143
11144                                 switch (*ip) {
11145                                 case CEE_BRTRUE_S:
11146                                 case CEE_BRFALSE_S:
11147                                         CHECK_OPSIZE (2);
11148                                         ip++;
11149                                         target = ip + 1 + (signed char)(*ip);
11150                                         ip++;
11151                                         break;
11152                                 case CEE_BRTRUE:
11153                                 case CEE_BRFALSE:
11154                                         CHECK_OPSIZE (5);
11155                                         ip++;
11156                                         target = ip + 4 + (gint)(read32 (ip));
11157                                         ip += 4;
11158                                         break;
11159                                 default:
11160                                         g_assert_not_reached ();
11161                                 }
11162
11163                                 /*
11164                                  * We need to link both bblocks, since it is needed for handling stack
11165                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11166                                  * Branching to only one of them would lead to inconsistencies, so
11167                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11168                                  */
11169                                 GET_BBLOCK (cfg, true_bb, target);
11170                                 GET_BBLOCK (cfg, false_bb, ip);
11171
11172                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11173                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11174
11175                                 if (sp != stack_start) {
11176                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11177                                         sp = stack_start;
11178                                         CHECK_UNVERIFIABLE (cfg);
11179                                 }
11180
11181                                 if (COMPILE_LLVM (cfg)) {
11182                                         dreg = alloc_ireg (cfg);
11183                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11184                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11185
11186                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11187                                 } else {
11188                                         /* The JIT can't eliminate the iconst+compare */
11189                                         MONO_INST_NEW (cfg, ins, OP_BR);
11190                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11191                                         MONO_ADD_INS (cfg->cbb, ins);
11192                                 }
11193
11194                                 start_new_bblock = 1;
11195                                 break;
11196                         }
11197
11198                         *sp++ = handle_box (cfg, val, klass, context_used);
11199
11200                         CHECK_CFG_EXCEPTION;
11201                         ip += 5;
11202                         inline_costs += 1;
11203                         break;
11204                 }
11205                 case CEE_UNBOX: {
11206                         CHECK_STACK (1);
11207                         --sp;
11208                         CHECK_OPSIZE (5);
11209                         token = read32 (ip + 1);
11210                         klass = mini_get_class (method, token, generic_context);
11211                         CHECK_TYPELOAD (klass);
11212
11213                         mono_save_token_info (cfg, image, token, klass);
11214
11215                         context_used = mini_class_check_context_used (cfg, klass);
11216
11217                         if (mono_class_is_nullable (klass)) {
11218                                 MonoInst *val;
11219
11220                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11221                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11222
11223                                 *sp++= ins;
11224                         } else {
11225                                 ins = handle_unbox (cfg, klass, sp, context_used);
11226                                 *sp++ = ins;
11227                         }
11228                         ip += 5;
11229                         inline_costs += 2;
11230                         break;
11231                 }
11232                 case CEE_LDFLD:
11233                 case CEE_LDFLDA:
11234                 case CEE_STFLD:
11235                 case CEE_LDSFLD:
11236                 case CEE_LDSFLDA:
11237                 case CEE_STSFLD: {
11238                         MonoClassField *field;
11239 #ifndef DISABLE_REMOTING
11240                         int costs;
11241 #endif
11242                         guint foffset;
11243                         gboolean is_instance;
11244                         int op;
11245                         gpointer addr = NULL;
11246                         gboolean is_special_static;
11247                         MonoType *ftype;
11248                         MonoInst *store_val = NULL;
11249                         MonoInst *thread_ins;
11250
11251                         op = *ip;
11252                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11253                         if (is_instance) {
11254                                 if (op == CEE_STFLD) {
11255                                         CHECK_STACK (2);
11256                                         sp -= 2;
11257                                         store_val = sp [1];
11258                                 } else {
11259                                         CHECK_STACK (1);
11260                                         --sp;
11261                                 }
11262                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11263                                         UNVERIFIED;
11264                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11265                                         UNVERIFIED;
11266                         } else {
11267                                 if (op == CEE_STSFLD) {
11268                                         CHECK_STACK (1);
11269                                         sp--;
11270                                         store_val = sp [0];
11271                                 }
11272                         }
11273
11274                         CHECK_OPSIZE (5);
11275                         token = read32 (ip + 1);
11276                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11277                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11278                                 klass = field->parent;
11279                         }
11280                         else {
11281                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11282                                 CHECK_CFG_ERROR;
11283                         }
11284                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11285                                 FIELD_ACCESS_FAILURE (method, field);
11286                         mono_class_init (klass);
11287
11288                         /* if the class is Critical then transparent code cannot access it's fields */
11289                         if (!is_instance && mono_security_core_clr_enabled ())
11290                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11291
11292                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11293                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11294                         if (mono_security_core_clr_enabled ())
11295                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11296                         */
11297
11298                         ftype = mono_field_get_type (field);
11299
11300                         /*
11301                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11302                          * the static case.
11303                          */
11304                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11305                                 switch (op) {
11306                                 case CEE_LDFLD:
11307                                         op = CEE_LDSFLD;
11308                                         break;
11309                                 case CEE_STFLD:
11310                                         op = CEE_STSFLD;
11311                                         break;
11312                                 case CEE_LDFLDA:
11313                                         op = CEE_LDSFLDA;
11314                                         break;
11315                                 default:
11316                                         g_assert_not_reached ();
11317                                 }
11318                                 is_instance = FALSE;
11319                         }
11320
11321                         context_used = mini_class_check_context_used (cfg, klass);
11322
11323                         /* INSTANCE CASE */
11324
11325                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11326                         if (op == CEE_STFLD) {
11327                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11328                                         UNVERIFIED;
11329 #ifndef DISABLE_REMOTING
11330                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11331                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11332                                         MonoInst *iargs [5];
11333
11334                                         GSHAREDVT_FAILURE (op);
11335
11336                                         iargs [0] = sp [0];
11337                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11338                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11339                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11340                                                     field->offset);
11341                                         iargs [4] = sp [1];
11342
11343                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11344                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11345                                                                                            iargs, ip, cfg->real_offset, TRUE);
11346                                                 CHECK_CFG_EXCEPTION;
11347                                                 g_assert (costs > 0);
11348
11349                                                 cfg->real_offset += 5;
11350
11351                                                 inline_costs += costs;
11352                                         } else {
11353                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11354                                         }
11355                                 } else
11356 #endif
11357                                 {
11358                                         MonoInst *store;
11359
11360                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11361
11362                                         if (mini_is_gsharedvt_klass (klass)) {
11363                                                 MonoInst *offset_ins;
11364
11365                                                 context_used = mini_class_check_context_used (cfg, klass);
11366
11367                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11368                                                 /* The value is offset by 1 */
11369                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11370                                                 dreg = alloc_ireg_mp (cfg);
11371                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11372                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11373                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11374                                         } else {
11375                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11376                                         }
11377                                         if (sp [0]->opcode != OP_LDADDR)
11378                                                 store->flags |= MONO_INST_FAULT;
11379
11380                                 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)) {
11381                                         /* insert call to write barrier */
11382                                         MonoInst *ptr;
11383                                         int dreg;
11384
11385                                         dreg = alloc_ireg_mp (cfg);
11386                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11387                                         emit_write_barrier (cfg, ptr, sp [1]);
11388                                 }
11389
11390                                         store->flags |= ins_flag;
11391                                 }
11392                                 ins_flag = 0;
11393                                 ip += 5;
11394                                 break;
11395                         }
11396
11397 #ifndef DISABLE_REMOTING
11398                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11399                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11400                                 MonoInst *iargs [4];
11401
11402                                 GSHAREDVT_FAILURE (op);
11403
11404                                 iargs [0] = sp [0];
11405                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11406                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11407                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11408                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11409                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11410                                                                                    iargs, ip, cfg->real_offset, TRUE);
11411                                         CHECK_CFG_EXCEPTION;
11412                                         g_assert (costs > 0);
11413
11414                                         cfg->real_offset += 5;
11415
11416                                         *sp++ = iargs [0];
11417
11418                                         inline_costs += costs;
11419                                 } else {
11420                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11421                                         *sp++ = ins;
11422                                 }
11423                         } else
11424 #endif
11425                         if (is_instance) {
11426                                 if (sp [0]->type == STACK_VTYPE) {
11427                                         MonoInst *var;
11428
11429                                         /* Have to compute the address of the variable */
11430
11431                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11432                                         if (!var)
11433                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11434                                         else
11435                                                 g_assert (var->klass == klass);
11436
11437                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11438                                         sp [0] = ins;
11439                                 }
11440
11441                                 if (op == CEE_LDFLDA) {
11442                                         if (sp [0]->type == STACK_OBJ) {
11443                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11444                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11445                                         }
11446
11447                                         dreg = alloc_ireg_mp (cfg);
11448
11449                                         if (mini_is_gsharedvt_klass (klass)) {
11450                                                 MonoInst *offset_ins;
11451
11452                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11453                                                 /* The value is offset by 1 */
11454                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11455                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11456                                         } else {
11457                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11458                                         }
11459                                         ins->klass = mono_class_from_mono_type (field->type);
11460                                         ins->type = STACK_MP;
11461                                         *sp++ = ins;
11462                                 } else {
11463                                         MonoInst *load;
11464
11465                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11466
11467                                         if (mini_is_gsharedvt_klass (klass)) {
11468                                                 MonoInst *offset_ins;
11469
11470                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11471                                                 /* The value is offset by 1 */
11472                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11473                                                 dreg = alloc_ireg_mp (cfg);
11474                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11475                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11476                                         } else {
11477                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11478                                         }
11479                                         load->flags |= ins_flag;
11480                                         if (sp [0]->opcode != OP_LDADDR)
11481                                                 load->flags |= MONO_INST_FAULT;
11482                                         *sp++ = load;
11483                                 }
11484                         }
11485
11486                         if (is_instance) {
11487                                 ins_flag = 0;
11488                                 ip += 5;
11489                                 break;
11490                         }
11491
11492                         /* STATIC CASE */
11493                         context_used = mini_class_check_context_used (cfg, klass);
11494
11495                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL)
11496                                 UNVERIFIED;
11497
11498                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11499                          * to be called here.
11500                          */
11501                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11502                                 mono_class_vtable (cfg->domain, klass);
11503                                 CHECK_TYPELOAD (klass);
11504                         }
11505                         mono_domain_lock (cfg->domain);
11506                         if (cfg->domain->special_static_fields)
11507                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11508                         mono_domain_unlock (cfg->domain);
11509
11510                         is_special_static = mono_class_field_is_special_static (field);
11511
11512                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11513                                 thread_ins = mono_get_thread_intrinsic (cfg);
11514                         else
11515                                 thread_ins = NULL;
11516
11517                         /* Generate IR to compute the field address */
11518                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11519                                 /*
11520                                  * Fast access to TLS data
11521                                  * Inline version of get_thread_static_data () in
11522                                  * threads.c.
11523                                  */
11524                                 guint32 offset;
11525                                 int idx, static_data_reg, array_reg, dreg;
11526
11527                                 GSHAREDVT_FAILURE (op);
11528
11529                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11530                                 static_data_reg = alloc_ireg (cfg);
11531                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11532
11533                                 if (cfg->compile_aot) {
11534                                         int offset_reg, offset2_reg, idx_reg;
11535
11536                                         /* For TLS variables, this will return the TLS offset */
11537                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11538                                         offset_reg = ins->dreg;
11539                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11540                                         idx_reg = alloc_ireg (cfg);
11541                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11542                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11543                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11544                                         array_reg = alloc_ireg (cfg);
11545                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11546                                         offset2_reg = alloc_ireg (cfg);
11547                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11548                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11549                                         dreg = alloc_ireg (cfg);
11550                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11551                                 } else {
11552                                         offset = (gsize)addr & 0x7fffffff;
11553                                         idx = offset & 0x3f;
11554
11555                                         array_reg = alloc_ireg (cfg);
11556                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11557                                         dreg = alloc_ireg (cfg);
11558                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11559                                 }
11560                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11561                                         (cfg->compile_aot && is_special_static) ||
11562                                         (context_used && is_special_static)) {
11563                                 MonoInst *iargs [2];
11564
11565                                 g_assert (field->parent);
11566                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11567                                 if (context_used) {
11568                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11569                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11570                                 } else {
11571                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11572                                 }
11573                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11574                         } else if (context_used) {
11575                                 MonoInst *static_data;
11576
11577                                 /*
11578                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11579                                         method->klass->name_space, method->klass->name, method->name,
11580                                         depth, field->offset);
11581                                 */
11582
11583                                 if (mono_class_needs_cctor_run (klass, method))
11584                                         emit_class_init (cfg, klass);
11585
11586                                 /*
11587                                  * The pointer we're computing here is
11588                                  *
11589                                  *   super_info.static_data + field->offset
11590                                  */
11591                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11592                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11593
11594                                 if (mini_is_gsharedvt_klass (klass)) {
11595                                         MonoInst *offset_ins;
11596
11597                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11598                                         /* The value is offset by 1 */
11599                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11600                                         dreg = alloc_ireg_mp (cfg);
11601                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11602                                 } else if (field->offset == 0) {
11603                                         ins = static_data;
11604                                 } else {
11605                                         int addr_reg = mono_alloc_preg (cfg);
11606                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11607                                 }
11608                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11609                                 MonoInst *iargs [2];
11610
11611                                 g_assert (field->parent);
11612                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11613                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11614                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11615                         } else {
11616                                 MonoVTable *vtable = NULL;
11617
11618                                 if (!cfg->compile_aot)
11619                                         vtable = mono_class_vtable (cfg->domain, klass);
11620                                 CHECK_TYPELOAD (klass);
11621
11622                                 if (!addr) {
11623                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11624                                                 if (!(g_slist_find (class_inits, klass))) {
11625                                                         emit_class_init (cfg, klass);
11626                                                         if (cfg->verbose_level > 2)
11627                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11628                                                         class_inits = g_slist_prepend (class_inits, klass);
11629                                                 }
11630                                         } else {
11631                                                 if (cfg->run_cctors) {
11632                                                         /* This makes so that inline cannot trigger */
11633                                                         /* .cctors: too many apps depend on them */
11634                                                         /* running with a specific order... */
11635                                                         g_assert (vtable);
11636                                                         if (! vtable->initialized)
11637                                                                 INLINE_FAILURE ("class init");
11638                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11639                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11640                                                                 g_assert_not_reached ();
11641                                                                 goto exception_exit;
11642                                                         }
11643                                                 }
11644                                         }
11645                                         if (cfg->compile_aot)
11646                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11647                                         else {
11648                                                 g_assert (vtable);
11649                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11650                                                 g_assert (addr);
11651                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11652                                         }
11653                                 } else {
11654                                         MonoInst *iargs [1];
11655                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11656                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11657                                 }
11658                         }
11659
11660                         /* Generate IR to do the actual load/store operation */
11661
11662                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11663                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11664                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11665                         }
11666
11667                         if (op == CEE_LDSFLDA) {
11668                                 ins->klass = mono_class_from_mono_type (ftype);
11669                                 ins->type = STACK_PTR;
11670                                 *sp++ = ins;
11671                         } else if (op == CEE_STSFLD) {
11672                                 MonoInst *store;
11673
11674                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11675                                 store->flags |= ins_flag;
11676                         } else {
11677                                 gboolean is_const = FALSE;
11678                                 MonoVTable *vtable = NULL;
11679                                 gpointer addr = NULL;
11680
11681                                 if (!context_used) {
11682                                         vtable = mono_class_vtable (cfg->domain, klass);
11683                                         CHECK_TYPELOAD (klass);
11684                                 }
11685                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11686                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11687                                         int ro_type = ftype->type;
11688                                         if (!addr)
11689                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11690                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11691                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11692                                         }
11693
11694                                         GSHAREDVT_FAILURE (op);
11695
11696                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11697                                         is_const = TRUE;
11698                                         switch (ro_type) {
11699                                         case MONO_TYPE_BOOLEAN:
11700                                         case MONO_TYPE_U1:
11701                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11702                                                 sp++;
11703                                                 break;
11704                                         case MONO_TYPE_I1:
11705                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11706                                                 sp++;
11707                                                 break;
11708                                         case MONO_TYPE_CHAR:
11709                                         case MONO_TYPE_U2:
11710                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11711                                                 sp++;
11712                                                 break;
11713                                         case MONO_TYPE_I2:
11714                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11715                                                 sp++;
11716                                                 break;
11717                                                 break;
11718                                         case MONO_TYPE_I4:
11719                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11720                                                 sp++;
11721                                                 break;
11722                                         case MONO_TYPE_U4:
11723                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11724                                                 sp++;
11725                                                 break;
11726                                         case MONO_TYPE_I:
11727                                         case MONO_TYPE_U:
11728                                         case MONO_TYPE_PTR:
11729                                         case MONO_TYPE_FNPTR:
11730                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11731                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11732                                                 sp++;
11733                                                 break;
11734                                         case MONO_TYPE_STRING:
11735                                         case MONO_TYPE_OBJECT:
11736                                         case MONO_TYPE_CLASS:
11737                                         case MONO_TYPE_SZARRAY:
11738                                         case MONO_TYPE_ARRAY:
11739                                                 if (!mono_gc_is_moving ()) {
11740                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11741                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11742                                                         sp++;
11743                                                 } else {
11744                                                         is_const = FALSE;
11745                                                 }
11746                                                 break;
11747                                         case MONO_TYPE_I8:
11748                                         case MONO_TYPE_U8:
11749                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11750                                                 sp++;
11751                                                 break;
11752                                         case MONO_TYPE_R4:
11753                                         case MONO_TYPE_R8:
11754                                         case MONO_TYPE_VALUETYPE:
11755                                         default:
11756                                                 is_const = FALSE;
11757                                                 break;
11758                                         }
11759                                 }
11760
11761                                 if (!is_const) {
11762                                         MonoInst *load;
11763
11764                                         CHECK_STACK_OVF (1);
11765
11766                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11767                                         load->flags |= ins_flag;
11768                                         ins_flag = 0;
11769                                         *sp++ = load;
11770                                 }
11771                         }
11772
11773                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11774                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11775                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11776                         }
11777
11778                         ins_flag = 0;
11779                         ip += 5;
11780                         break;
11781                 }
11782                 case CEE_STOBJ:
11783                         CHECK_STACK (2);
11784                         sp -= 2;
11785                         CHECK_OPSIZE (5);
11786                         token = read32 (ip + 1);
11787                         klass = mini_get_class (method, token, generic_context);
11788                         CHECK_TYPELOAD (klass);
11789                         if (ins_flag & MONO_INST_VOLATILE) {
11790                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11791                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11792                         }
11793                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11794                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11795                         ins->flags |= ins_flag;
11796                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11797                                         generic_class_is_reference_type (cfg, klass)) {
11798                                 /* insert call to write barrier */
11799                                 emit_write_barrier (cfg, sp [0], sp [1]);
11800                         }
11801                         ins_flag = 0;
11802                         ip += 5;
11803                         inline_costs += 1;
11804                         break;
11805
11806                         /*
11807                          * Array opcodes
11808                          */
11809                 case CEE_NEWARR: {
11810                         MonoInst *len_ins;
11811                         const char *data_ptr;
11812                         int data_size = 0;
11813                         guint32 field_token;
11814
11815                         CHECK_STACK (1);
11816                         --sp;
11817
11818                         CHECK_OPSIZE (5);
11819                         token = read32 (ip + 1);
11820
11821                         klass = mini_get_class (method, token, generic_context);
11822                         CHECK_TYPELOAD (klass);
11823
11824                         context_used = mini_class_check_context_used (cfg, klass);
11825
11826                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11827                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11828                                 ins->sreg1 = sp [0]->dreg;
11829                                 ins->type = STACK_I4;
11830                                 ins->dreg = alloc_ireg (cfg);
11831                                 MONO_ADD_INS (cfg->cbb, ins);
11832                                 *sp = mono_decompose_opcode (cfg, ins);
11833                         }
11834
11835                         if (context_used) {
11836                                 MonoInst *args [3];
11837                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11838                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11839
11840                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11841
11842                                 /* vtable */
11843                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11844                                         array_class, MONO_RGCTX_INFO_VTABLE);
11845                                 /* array len */
11846                                 args [1] = sp [0];
11847
11848                                 if (managed_alloc)
11849                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11850                                 else
11851                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11852                         } else {
11853                                 if (cfg->opt & MONO_OPT_SHARED) {
11854                                         /* Decompose now to avoid problems with references to the domainvar */
11855                                         MonoInst *iargs [3];
11856
11857                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11858                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11859                                         iargs [2] = sp [0];
11860
11861                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
11862                                 } else {
11863                                         /* Decompose later since it is needed by abcrem */
11864                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11865                                         mono_class_vtable (cfg->domain, array_type);
11866                                         CHECK_TYPELOAD (array_type);
11867
11868                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11869                                         ins->dreg = alloc_ireg_ref (cfg);
11870                                         ins->sreg1 = sp [0]->dreg;
11871                                         ins->inst_newa_class = klass;
11872                                         ins->type = STACK_OBJ;
11873                                         ins->klass = array_type;
11874                                         MONO_ADD_INS (cfg->cbb, ins);
11875                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11876                                         cfg->cbb->has_array_access = TRUE;
11877
11878                                         /* Needed so mono_emit_load_get_addr () gets called */
11879                                         mono_get_got_var (cfg);
11880                                 }
11881                         }
11882
11883                         len_ins = sp [0];
11884                         ip += 5;
11885                         *sp++ = ins;
11886                         inline_costs += 1;
11887
11888                         /*
11889                          * we inline/optimize the initialization sequence if possible.
11890                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11891                          * for small sizes open code the memcpy
11892                          * ensure the rva field is big enough
11893                          */
11894                         if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, cfg->cbb, ip + 6) && (len_ins->opcode == OP_ICONST) && (data_ptr = initialize_array_data (method, cfg->compile_aot, ip, klass, len_ins->inst_c0, &data_size, &field_token))) {
11895                                 MonoMethod *memcpy_method = get_memcpy_method ();
11896                                 MonoInst *iargs [3];
11897                                 int add_reg = alloc_ireg_mp (cfg);
11898
11899                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11900                                 if (cfg->compile_aot) {
11901                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11902                                 } else {
11903                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11904                                 }
11905                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11906                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11907                                 ip += 11;
11908                         }
11909
11910                         break;
11911                 }
11912                 case CEE_LDLEN:
11913                         CHECK_STACK (1);
11914                         --sp;
11915                         if (sp [0]->type != STACK_OBJ)
11916                                 UNVERIFIED;
11917
11918                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11919                         ins->dreg = alloc_preg (cfg);
11920                         ins->sreg1 = sp [0]->dreg;
11921                         ins->type = STACK_I4;
11922                         /* This flag will be inherited by the decomposition */
11923                         ins->flags |= MONO_INST_FAULT;
11924                         MONO_ADD_INS (cfg->cbb, ins);
11925                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11926                         cfg->cbb->has_array_access = TRUE;
11927                         ip ++;
11928                         *sp++ = ins;
11929                         break;
11930                 case CEE_LDELEMA:
11931                         CHECK_STACK (2);
11932                         sp -= 2;
11933                         CHECK_OPSIZE (5);
11934                         if (sp [0]->type != STACK_OBJ)
11935                                 UNVERIFIED;
11936
11937                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11938
11939                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11940                         CHECK_TYPELOAD (klass);
11941                         /* we need to make sure that this array is exactly the type it needs
11942                          * to be for correctness. the wrappers are lax with their usage
11943                          * so we need to ignore them here
11944                          */
11945                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11946                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11947                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11948                                 CHECK_TYPELOAD (array_class);
11949                         }
11950
11951                         readonly = FALSE;
11952                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11953                         *sp++ = ins;
11954                         ip += 5;
11955                         break;
11956                 case CEE_LDELEM:
11957                 case CEE_LDELEM_I1:
11958                 case CEE_LDELEM_U1:
11959                 case CEE_LDELEM_I2:
11960                 case CEE_LDELEM_U2:
11961                 case CEE_LDELEM_I4:
11962                 case CEE_LDELEM_U4:
11963                 case CEE_LDELEM_I8:
11964                 case CEE_LDELEM_I:
11965                 case CEE_LDELEM_R4:
11966                 case CEE_LDELEM_R8:
11967                 case CEE_LDELEM_REF: {
11968                         MonoInst *addr;
11969
11970                         CHECK_STACK (2);
11971                         sp -= 2;
11972
11973                         if (*ip == CEE_LDELEM) {
11974                                 CHECK_OPSIZE (5);
11975                                 token = read32 (ip + 1);
11976                                 klass = mini_get_class (method, token, generic_context);
11977                                 CHECK_TYPELOAD (klass);
11978                                 mono_class_init (klass);
11979                         }
11980                         else
11981                                 klass = array_access_to_klass (*ip);
11982
11983                         if (sp [0]->type != STACK_OBJ)
11984                                 UNVERIFIED;
11985
11986                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11987
11988                         if (mini_is_gsharedvt_variable_klass (klass)) {
11989                                 // FIXME-VT: OP_ICONST optimization
11990                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11991                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11992                                 ins->opcode = OP_LOADV_MEMBASE;
11993                         } else if (sp [1]->opcode == OP_ICONST) {
11994                                 int array_reg = sp [0]->dreg;
11995                                 int index_reg = sp [1]->dreg;
11996                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11997
11998                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11999                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12000
12001                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12002                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12003                         } else {
12004                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12005                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12006                         }
12007                         *sp++ = ins;
12008                         if (*ip == CEE_LDELEM)
12009                                 ip += 5;
12010                         else
12011                                 ++ip;
12012                         break;
12013                 }
12014                 case CEE_STELEM_I:
12015                 case CEE_STELEM_I1:
12016                 case CEE_STELEM_I2:
12017                 case CEE_STELEM_I4:
12018                 case CEE_STELEM_I8:
12019                 case CEE_STELEM_R4:
12020                 case CEE_STELEM_R8:
12021                 case CEE_STELEM_REF:
12022                 case CEE_STELEM: {
12023                         CHECK_STACK (3);
12024                         sp -= 3;
12025
12026                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12027
12028                         if (*ip == CEE_STELEM) {
12029                                 CHECK_OPSIZE (5);
12030                                 token = read32 (ip + 1);
12031                                 klass = mini_get_class (method, token, generic_context);
12032                                 CHECK_TYPELOAD (klass);
12033                                 mono_class_init (klass);
12034                         }
12035                         else
12036                                 klass = array_access_to_klass (*ip);
12037
12038                         if (sp [0]->type != STACK_OBJ)
12039                                 UNVERIFIED;
12040
12041                         emit_array_store (cfg, klass, sp, TRUE);
12042
12043                         if (*ip == CEE_STELEM)
12044                                 ip += 5;
12045                         else
12046                                 ++ip;
12047                         inline_costs += 1;
12048                         break;
12049                 }
12050                 case CEE_CKFINITE: {
12051                         CHECK_STACK (1);
12052                         --sp;
12053
12054                         if (cfg->llvm_only) {
12055                                 MonoInst *iargs [1];
12056
12057                                 iargs [0] = sp [0];
12058                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12059                         } else  {
12060                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12061                                 ins->sreg1 = sp [0]->dreg;
12062                                 ins->dreg = alloc_freg (cfg);
12063                                 ins->type = STACK_R8;
12064                                 MONO_ADD_INS (cfg->cbb, ins);
12065
12066                                 *sp++ = mono_decompose_opcode (cfg, ins);
12067                         }
12068
12069                         ++ip;
12070                         break;
12071                 }
12072                 case CEE_REFANYVAL: {
12073                         MonoInst *src_var, *src;
12074
12075                         int klass_reg = alloc_preg (cfg);
12076                         int dreg = alloc_preg (cfg);
12077
12078                         GSHAREDVT_FAILURE (*ip);
12079
12080                         CHECK_STACK (1);
12081                         MONO_INST_NEW (cfg, ins, *ip);
12082                         --sp;
12083                         CHECK_OPSIZE (5);
12084                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12085                         CHECK_TYPELOAD (klass);
12086
12087                         context_used = mini_class_check_context_used (cfg, klass);
12088
12089                         // FIXME:
12090                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12091                         if (!src_var)
12092                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12093                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12094                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12095
12096                         if (context_used) {
12097                                 MonoInst *klass_ins;
12098
12099                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12100                                                 klass, MONO_RGCTX_INFO_KLASS);
12101
12102                                 // FIXME:
12103                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12104                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12105                         } else {
12106                                 mini_emit_class_check (cfg, klass_reg, klass);
12107                         }
12108                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12109                         ins->type = STACK_MP;
12110                         ins->klass = klass;
12111                         *sp++ = ins;
12112                         ip += 5;
12113                         break;
12114                 }
12115                 case CEE_MKREFANY: {
12116                         MonoInst *loc, *addr;
12117
12118                         GSHAREDVT_FAILURE (*ip);
12119
12120                         CHECK_STACK (1);
12121                         MONO_INST_NEW (cfg, ins, *ip);
12122                         --sp;
12123                         CHECK_OPSIZE (5);
12124                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12125                         CHECK_TYPELOAD (klass);
12126
12127                         context_used = mini_class_check_context_used (cfg, klass);
12128
12129                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12130                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12131
12132                         if (context_used) {
12133                                 MonoInst *const_ins;
12134                                 int type_reg = alloc_preg (cfg);
12135
12136                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12137                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12138                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12139                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12140                         } else if (cfg->compile_aot) {
12141                                 int const_reg = alloc_preg (cfg);
12142                                 int type_reg = alloc_preg (cfg);
12143
12144                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12145                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12146                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12147                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12148                         } else {
12149                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12150                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12151                         }
12152                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12153
12154                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12155                         ins->type = STACK_VTYPE;
12156                         ins->klass = mono_defaults.typed_reference_class;
12157                         *sp++ = ins;
12158                         ip += 5;
12159                         break;
12160                 }
12161                 case CEE_LDTOKEN: {
12162                         gpointer handle;
12163                         MonoClass *handle_class;
12164
12165                         CHECK_STACK_OVF (1);
12166
12167                         CHECK_OPSIZE (5);
12168                         n = read32 (ip + 1);
12169
12170                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12171                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12172                                 handle = mono_method_get_wrapper_data (method, n);
12173                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12174                                 if (handle_class == mono_defaults.typehandle_class)
12175                                         handle = &((MonoClass*)handle)->byval_arg;
12176                         }
12177                         else {
12178                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12179                                 CHECK_CFG_ERROR;
12180                         }
12181                         if (!handle)
12182                                 LOAD_ERROR;
12183                         mono_class_init (handle_class);
12184                         if (cfg->gshared) {
12185                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12186                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12187                                         /* This case handles ldtoken
12188                                            of an open type, like for
12189                                            typeof(Gen<>). */
12190                                         context_used = 0;
12191                                 } else if (handle_class == mono_defaults.typehandle_class) {
12192                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12193                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12194                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12195                                 else if (handle_class == mono_defaults.methodhandle_class)
12196                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12197                                 else
12198                                         g_assert_not_reached ();
12199                         }
12200
12201                         if ((cfg->opt & MONO_OPT_SHARED) &&
12202                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12203                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12204                                 MonoInst *addr, *vtvar, *iargs [3];
12205                                 int method_context_used;
12206
12207                                 method_context_used = mini_method_check_context_used (cfg, method);
12208
12209                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12210
12211                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12212                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12213                                 if (method_context_used) {
12214                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12215                                                 method, MONO_RGCTX_INFO_METHOD);
12216                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12217                                 } else {
12218                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12219                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12220                                 }
12221                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12222
12223                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12224
12225                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12226                         } else {
12227                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12228                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12229                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12230                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12231                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12232                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12233
12234                                         mono_class_init (tclass);
12235                                         if (context_used) {
12236                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12237                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12238                                         } else if (cfg->compile_aot) {
12239                                                 if (method->wrapper_type) {
12240                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12241                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12242                                                                 /* Special case for static synchronized wrappers */
12243                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12244                                                         } else {
12245                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12246                                                                 /* FIXME: n is not a normal token */
12247                                                                 DISABLE_AOT (cfg);
12248                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12249                                                         }
12250                                                 } else {
12251                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12252                                                 }
12253                                         } else {
12254                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12255                                                 CHECK_CFG_ERROR;
12256                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12257                                         }
12258                                         ins->type = STACK_OBJ;
12259                                         ins->klass = cmethod->klass;
12260                                         ip += 5;
12261                                 } else {
12262                                         MonoInst *addr, *vtvar;
12263
12264                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12265
12266                                         if (context_used) {
12267                                                 if (handle_class == mono_defaults.typehandle_class) {
12268                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12269                                                                         mono_class_from_mono_type ((MonoType *)handle),
12270                                                                         MONO_RGCTX_INFO_TYPE);
12271                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12272                                                         ins = emit_get_rgctx_method (cfg, context_used,
12273                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12274                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12275                                                         ins = emit_get_rgctx_field (cfg, context_used,
12276                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12277                                                 } else {
12278                                                         g_assert_not_reached ();
12279                                                 }
12280                                         } else if (cfg->compile_aot) {
12281                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12282                                         } else {
12283                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12284                                         }
12285                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12286                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12287                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12288                                 }
12289                         }
12290
12291                         *sp++ = ins;
12292                         ip += 5;
12293                         break;
12294                 }
12295                 case CEE_THROW:
12296                         CHECK_STACK (1);
12297                         MONO_INST_NEW (cfg, ins, OP_THROW);
12298                         --sp;
12299                         ins->sreg1 = sp [0]->dreg;
12300                         ip++;
12301                         cfg->cbb->out_of_line = TRUE;
12302                         MONO_ADD_INS (cfg->cbb, ins);
12303                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12304                         MONO_ADD_INS (cfg->cbb, ins);
12305                         sp = stack_start;
12306
12307                         link_bblock (cfg, cfg->cbb, end_bblock);
12308                         start_new_bblock = 1;
12309                         /* This can complicate code generation for llvm since the return value might not be defined */
12310                         if (COMPILE_LLVM (cfg))
12311                                 INLINE_FAILURE ("throw");
12312                         break;
12313                 case CEE_ENDFINALLY:
12314                         /* mono_save_seq_point_info () depends on this */
12315                         if (sp != stack_start)
12316                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12317                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12318                         MONO_ADD_INS (cfg->cbb, ins);
12319                         ip++;
12320                         start_new_bblock = 1;
12321
12322                         /*
12323                          * Control will leave the method so empty the stack, otherwise
12324                          * the next basic block will start with a nonempty stack.
12325                          */
12326                         while (sp != stack_start) {
12327                                 sp--;
12328                         }
12329                         break;
12330                 case CEE_LEAVE:
12331                 case CEE_LEAVE_S: {
12332                         GList *handlers;
12333
12334                         if (*ip == CEE_LEAVE) {
12335                                 CHECK_OPSIZE (5);
12336                                 target = ip + 5 + (gint32)read32(ip + 1);
12337                         } else {
12338                                 CHECK_OPSIZE (2);
12339                                 target = ip + 2 + (signed char)(ip [1]);
12340                         }
12341
12342                         /* empty the stack */
12343                         while (sp != stack_start) {
12344                                 sp--;
12345                         }
12346
12347                         /*
12348                          * If this leave statement is in a catch block, check for a
12349                          * pending exception, and rethrow it if necessary.
12350                          * We avoid doing this in runtime invoke wrappers, since those are called
12351                          * by native code which excepts the wrapper to catch all exceptions.
12352                          */
12353                         for (i = 0; i < header->num_clauses; ++i) {
12354                                 MonoExceptionClause *clause = &header->clauses [i];
12355
12356                                 /*
12357                                  * Use <= in the final comparison to handle clauses with multiple
12358                                  * leave statements, like in bug #78024.
12359                                  * The ordering of the exception clauses guarantees that we find the
12360                                  * innermost clause.
12361                                  */
12362                                 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) {
12363                                         MonoInst *exc_ins;
12364                                         MonoBasicBlock *dont_throw;
12365
12366                                         /*
12367                                           MonoInst *load;
12368
12369                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12370                                         */
12371
12372                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12373
12374                                         NEW_BBLOCK (cfg, dont_throw);
12375
12376                                         /*
12377                                          * Currently, we always rethrow the abort exception, despite the
12378                                          * fact that this is not correct. See thread6.cs for an example.
12379                                          * But propagating the abort exception is more important than
12380                                          * getting the sematics right.
12381                                          */
12382                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12383                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12384                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12385
12386                                         MONO_START_BB (cfg, dont_throw);
12387                                 }
12388                         }
12389
12390 #ifdef ENABLE_LLVM
12391                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12392 #endif
12393
12394                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12395                                 GList *tmp;
12396                                 MonoExceptionClause *clause;
12397
12398                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12399                                         clause = (MonoExceptionClause *)tmp->data;
12400                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12401                                         g_assert (tblock);
12402                                         link_bblock (cfg, cfg->cbb, tblock);
12403                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12404                                         ins->inst_target_bb = tblock;
12405                                         ins->inst_eh_block = clause;
12406                                         MONO_ADD_INS (cfg->cbb, ins);
12407                                         cfg->cbb->has_call_handler = 1;
12408                                         if (COMPILE_LLVM (cfg)) {
12409                                                 MonoBasicBlock *target_bb;
12410
12411                                                 /*
12412                                                  * Link the finally bblock with the target, since it will
12413                                                  * conceptually branch there.
12414                                                  */
12415                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12416                                                 GET_BBLOCK (cfg, target_bb, target);
12417                                                 link_bblock (cfg, tblock, target_bb);
12418                                         }
12419                                 }
12420                                 g_list_free (handlers);
12421                         }
12422
12423                         MONO_INST_NEW (cfg, ins, OP_BR);
12424                         MONO_ADD_INS (cfg->cbb, ins);
12425                         GET_BBLOCK (cfg, tblock, target);
12426                         link_bblock (cfg, cfg->cbb, tblock);
12427                         ins->inst_target_bb = tblock;
12428
12429                         start_new_bblock = 1;
12430
12431                         if (*ip == CEE_LEAVE)
12432                                 ip += 5;
12433                         else
12434                                 ip += 2;
12435
12436                         break;
12437                 }
12438
12439                         /*
12440                          * Mono specific opcodes
12441                          */
12442                 case MONO_CUSTOM_PREFIX: {
12443
12444                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12445
12446                         CHECK_OPSIZE (2);
12447                         switch (ip [1]) {
12448                         case CEE_MONO_ICALL: {
12449                                 gpointer func;
12450                                 MonoJitICallInfo *info;
12451
12452                                 token = read32 (ip + 2);
12453                                 func = mono_method_get_wrapper_data (method, token);
12454                                 info = mono_find_jit_icall_by_addr (func);
12455                                 if (!info)
12456                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12457                                 g_assert (info);
12458
12459                                 CHECK_STACK (info->sig->param_count);
12460                                 sp -= info->sig->param_count;
12461
12462                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12463                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12464                                         *sp++ = ins;
12465
12466                                 ip += 6;
12467                                 inline_costs += 10 * num_calls++;
12468
12469                                 break;
12470                         }
12471                         case CEE_MONO_LDPTR_CARD_TABLE:
12472                         case CEE_MONO_LDPTR_NURSERY_START:
12473                         case CEE_MONO_LDPTR_NURSERY_BITS:
12474                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12475                                 CHECK_STACK_OVF (1);
12476
12477                                 switch (ip [1]) {
12478                                         case CEE_MONO_LDPTR_CARD_TABLE:
12479                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12480                                                 break;
12481                                         case CEE_MONO_LDPTR_NURSERY_START:
12482                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12483                                                 break;
12484                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12485                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12486                                                 break;
12487                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12488                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12489                                                 break;
12490                                 }
12491
12492                                 *sp++ = ins;
12493                                 ip += 2;
12494                                 inline_costs += 10 * num_calls++;
12495                                 break;
12496                         }
12497                         case CEE_MONO_LDPTR: {
12498                                 gpointer ptr;
12499
12500                                 CHECK_STACK_OVF (1);
12501                                 CHECK_OPSIZE (6);
12502                                 token = read32 (ip + 2);
12503
12504                                 ptr = mono_method_get_wrapper_data (method, token);
12505                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12506                                 *sp++ = ins;
12507                                 ip += 6;
12508                                 inline_costs += 10 * num_calls++;
12509                                 /* Can't embed random pointers into AOT code */
12510                                 DISABLE_AOT (cfg);
12511                                 break;
12512                         }
12513                         case CEE_MONO_JIT_ICALL_ADDR: {
12514                                 MonoJitICallInfo *callinfo;
12515                                 gpointer ptr;
12516
12517                                 CHECK_STACK_OVF (1);
12518                                 CHECK_OPSIZE (6);
12519                                 token = read32 (ip + 2);
12520
12521                                 ptr = mono_method_get_wrapper_data (method, token);
12522                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12523                                 g_assert (callinfo);
12524                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12525                                 *sp++ = ins;
12526                                 ip += 6;
12527                                 inline_costs += 10 * num_calls++;
12528                                 break;
12529                         }
12530                         case CEE_MONO_ICALL_ADDR: {
12531                                 MonoMethod *cmethod;
12532                                 gpointer ptr;
12533
12534                                 CHECK_STACK_OVF (1);
12535                                 CHECK_OPSIZE (6);
12536                                 token = read32 (ip + 2);
12537
12538                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12539
12540                                 if (cfg->compile_aot) {
12541                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12542                                 } else {
12543                                         ptr = mono_lookup_internal_call (cmethod);
12544                                         g_assert (ptr);
12545                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12546                                 }
12547                                 *sp++ = ins;
12548                                 ip += 6;
12549                                 break;
12550                         }
12551                         case CEE_MONO_VTADDR: {
12552                                 MonoInst *src_var, *src;
12553
12554                                 CHECK_STACK (1);
12555                                 --sp;
12556
12557                                 // FIXME:
12558                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12559                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12560                                 *sp++ = src;
12561                                 ip += 2;
12562                                 break;
12563                         }
12564                         case CEE_MONO_NEWOBJ: {
12565                                 MonoInst *iargs [2];
12566
12567                                 CHECK_STACK_OVF (1);
12568                                 CHECK_OPSIZE (6);
12569                                 token = read32 (ip + 2);
12570                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12571                                 mono_class_init (klass);
12572                                 NEW_DOMAINCONST (cfg, iargs [0]);
12573                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12574                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12575                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12576                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12577                                 ip += 6;
12578                                 inline_costs += 10 * num_calls++;
12579                                 break;
12580                         }
12581                         case CEE_MONO_OBJADDR:
12582                                 CHECK_STACK (1);
12583                                 --sp;
12584                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12585                                 ins->dreg = alloc_ireg_mp (cfg);
12586                                 ins->sreg1 = sp [0]->dreg;
12587                                 ins->type = STACK_MP;
12588                                 MONO_ADD_INS (cfg->cbb, ins);
12589                                 *sp++ = ins;
12590                                 ip += 2;
12591                                 break;
12592                         case CEE_MONO_LDNATIVEOBJ:
12593                                 /*
12594                                  * Similar to LDOBJ, but instead load the unmanaged
12595                                  * representation of the vtype to the stack.
12596                                  */
12597                                 CHECK_STACK (1);
12598                                 CHECK_OPSIZE (6);
12599                                 --sp;
12600                                 token = read32 (ip + 2);
12601                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12602                                 g_assert (klass->valuetype);
12603                                 mono_class_init (klass);
12604
12605                                 {
12606                                         MonoInst *src, *dest, *temp;
12607
12608                                         src = sp [0];
12609                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12610                                         temp->backend.is_pinvoke = 1;
12611                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12612                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12613
12614                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12615                                         dest->type = STACK_VTYPE;
12616                                         dest->klass = klass;
12617
12618                                         *sp ++ = dest;
12619                                         ip += 6;
12620                                 }
12621                                 break;
12622                         case CEE_MONO_RETOBJ: {
12623                                 /*
12624                                  * Same as RET, but return the native representation of a vtype
12625                                  * to the caller.
12626                                  */
12627                                 g_assert (cfg->ret);
12628                                 g_assert (mono_method_signature (method)->pinvoke);
12629                                 CHECK_STACK (1);
12630                                 --sp;
12631
12632                                 CHECK_OPSIZE (6);
12633                                 token = read32 (ip + 2);
12634                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12635
12636                                 if (!cfg->vret_addr) {
12637                                         g_assert (cfg->ret_var_is_local);
12638
12639                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12640                                 } else {
12641                                         EMIT_NEW_RETLOADA (cfg, ins);
12642                                 }
12643                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12644
12645                                 if (sp != stack_start)
12646                                         UNVERIFIED;
12647
12648                                 MONO_INST_NEW (cfg, ins, OP_BR);
12649                                 ins->inst_target_bb = end_bblock;
12650                                 MONO_ADD_INS (cfg->cbb, ins);
12651                                 link_bblock (cfg, cfg->cbb, end_bblock);
12652                                 start_new_bblock = 1;
12653                                 ip += 6;
12654                                 break;
12655                         }
12656                         case CEE_MONO_CISINST:
12657                         case CEE_MONO_CCASTCLASS: {
12658                                 int token;
12659                                 CHECK_STACK (1);
12660                                 --sp;
12661                                 CHECK_OPSIZE (6);
12662                                 token = read32 (ip + 2);
12663                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12664                                 if (ip [1] == CEE_MONO_CISINST)
12665                                         ins = handle_cisinst (cfg, klass, sp [0]);
12666                                 else
12667                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12668                                 *sp++ = ins;
12669                                 ip += 6;
12670                                 break;
12671                         }
12672                         case CEE_MONO_SAVE_LMF:
12673                         case CEE_MONO_RESTORE_LMF:
12674                                 ip += 2;
12675                                 break;
12676                         case CEE_MONO_CLASSCONST:
12677                                 CHECK_STACK_OVF (1);
12678                                 CHECK_OPSIZE (6);
12679                                 token = read32 (ip + 2);
12680                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12681                                 *sp++ = ins;
12682                                 ip += 6;
12683                                 inline_costs += 10 * num_calls++;
12684                                 break;
12685                         case CEE_MONO_NOT_TAKEN:
12686                                 cfg->cbb->out_of_line = TRUE;
12687                                 ip += 2;
12688                                 break;
12689                         case CEE_MONO_TLS: {
12690                                 MonoTlsKey key;
12691
12692                                 CHECK_STACK_OVF (1);
12693                                 CHECK_OPSIZE (6);
12694                                 key = (MonoTlsKey)read32 (ip + 2);
12695                                 g_assert (key < TLS_KEY_NUM);
12696
12697                                 ins = mono_create_tls_get (cfg, key);
12698                                 if (!ins) {
12699                                         if (cfg->compile_aot) {
12700                                                 DISABLE_AOT (cfg);
12701                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12702                                                 ins->dreg = alloc_preg (cfg);
12703                                                 ins->type = STACK_PTR;
12704                                         } else {
12705                                                 g_assert_not_reached ();
12706                                         }
12707                                 }
12708                                 ins->type = STACK_PTR;
12709                                 MONO_ADD_INS (cfg->cbb, ins);
12710                                 *sp++ = ins;
12711                                 ip += 6;
12712                                 break;
12713                         }
12714                         case CEE_MONO_DYN_CALL: {
12715                                 MonoCallInst *call;
12716
12717                                 /* It would be easier to call a trampoline, but that would put an
12718                                  * extra frame on the stack, confusing exception handling. So
12719                                  * implement it inline using an opcode for now.
12720                                  */
12721
12722                                 if (!cfg->dyn_call_var) {
12723                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12724                                         /* prevent it from being register allocated */
12725                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12726                                 }
12727
12728                                 /* Has to use a call inst since it local regalloc expects it */
12729                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12730                                 ins = (MonoInst*)call;
12731                                 sp -= 2;
12732                                 ins->sreg1 = sp [0]->dreg;
12733                                 ins->sreg2 = sp [1]->dreg;
12734                                 MONO_ADD_INS (cfg->cbb, ins);
12735
12736                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12737
12738                                 ip += 2;
12739                                 inline_costs += 10 * num_calls++;
12740
12741                                 break;
12742                         }
12743                         case CEE_MONO_MEMORY_BARRIER: {
12744                                 CHECK_OPSIZE (6);
12745                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12746                                 ip += 6;
12747                                 break;
12748                         }
12749                         case CEE_MONO_JIT_ATTACH: {
12750                                 MonoInst *args [16], *domain_ins;
12751                                 MonoInst *ad_ins, *jit_tls_ins;
12752                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12753
12754                                 cfg->attach_cookie = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12755                                 cfg->attach_dummy = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12756
12757                                 if (mono_threads_is_coop_enabled ()) {
12758                                         /* AOT code is only used in the root domain */
12759                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12760                                         EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12761                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12762                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12763                                 } else {
12764                                         EMIT_NEW_PCONST (cfg, ins, NULL);
12765                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12766
12767                                         ad_ins = mono_get_domain_intrinsic (cfg);
12768                                         jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12769
12770                                         if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12771                                                 NEW_BBLOCK (cfg, next_bb);
12772                                                 NEW_BBLOCK (cfg, call_bb);
12773
12774                                                 if (cfg->compile_aot) {
12775                                                         /* AOT code is only used in the root domain */
12776                                                         EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12777                                                 } else {
12778                                                         EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12779                                                 }
12780                                                 MONO_ADD_INS (cfg->cbb, ad_ins);
12781                                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12782                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12783
12784                                                 MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12785                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12786                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12787
12788                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12789                                                 MONO_START_BB (cfg, call_bb);
12790                                         }
12791
12792                                         /* AOT code is only used in the root domain */
12793                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12794                                         EMIT_NEW_PCONST (cfg, args [1], NULL);
12795                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12796                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12797
12798                                         if (next_bb)
12799                                                 MONO_START_BB (cfg, next_bb);
12800                                 }
12801
12802                                 ip += 2;
12803                                 break;
12804                         }
12805                         case CEE_MONO_JIT_DETACH: {
12806                                 MonoInst *args [16];
12807
12808                                 /* Restore the original domain */
12809                                 dreg = alloc_ireg (cfg);
12810                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->attach_cookie->dreg);
12811                                 EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12812                                 mono_emit_jit_icall (cfg, mono_jit_thread_detach, args);
12813                                 ip += 2;
12814                                 break;
12815                         }
12816                         case CEE_MONO_CALLI_EXTRA_ARG: {
12817                                 MonoInst *addr;
12818                                 MonoMethodSignature *fsig;
12819                                 MonoInst *arg;
12820
12821                                 /*
12822                                  * This is the same as CEE_CALLI, but passes an additional argument
12823                                  * to the called method in llvmonly mode.
12824                                  * This is only used by delegate invoke wrappers to call the
12825                                  * actual delegate method.
12826                                  */
12827                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12828
12829                                 CHECK_OPSIZE (6);
12830                                 token = read32 (ip + 2);
12831
12832                                 ins = NULL;
12833
12834                                 cmethod = NULL;
12835                                 CHECK_STACK (1);
12836                                 --sp;
12837                                 addr = *sp;
12838                                 fsig = mini_get_signature (method, token, generic_context);
12839
12840                                 if (cfg->llvm_only)
12841                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12842
12843                                 n = fsig->param_count + fsig->hasthis + 1;
12844
12845                                 CHECK_STACK (n);
12846
12847                                 sp -= n;
12848                                 arg = sp [n - 1];
12849
12850                                 if (cfg->llvm_only) {
12851                                         /*
12852                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12853                                          * cconv. This is set by mono_init_delegate ().
12854                                          */
12855                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12856                                                 MonoInst *callee = addr;
12857                                                 MonoInst *call, *localloc_ins;
12858                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12859                                                 int low_bit_reg = alloc_preg (cfg);
12860
12861                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12862                                                 NEW_BBLOCK (cfg, end_bb);
12863
12864                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12865                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12866                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12867
12868                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12869                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12870                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12871                                                 /*
12872                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12873                                                  */
12874                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12875                                                 ins->dreg = alloc_preg (cfg);
12876                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12877                                                 MONO_ADD_INS (cfg->cbb, ins);
12878                                                 localloc_ins = ins;
12879                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12880                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12881                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12882
12883                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12884                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12885
12886                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12887                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12888                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12889                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12890                                                 ins->dreg = call->dreg;
12891
12892                                                 MONO_START_BB (cfg, end_bb);
12893                                         } else {
12894                                                 /* Caller uses a normal calling conv */
12895
12896                                                 MonoInst *callee = addr;
12897                                                 MonoInst *call, *localloc_ins;
12898                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12899                                                 int low_bit_reg = alloc_preg (cfg);
12900
12901                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12902                                                 NEW_BBLOCK (cfg, end_bb);
12903
12904                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12905                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12906                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12907
12908                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12909                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12910                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12911                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12912                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12913                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12914                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12915                                                 MONO_ADD_INS (cfg->cbb, addr);
12916                                                 /*
12917                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12918                                                  */
12919                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12920                                                 ins->dreg = alloc_preg (cfg);
12921                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12922                                                 MONO_ADD_INS (cfg->cbb, ins);
12923                                                 localloc_ins = ins;
12924                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12925                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12926                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12927
12928                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12929                                                 ins->dreg = call->dreg;
12930                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12931
12932                                                 MONO_START_BB (cfg, end_bb);
12933                                         }
12934                                 } else {
12935                                         /* Same as CEE_CALLI */
12936                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12937                                                 /*
12938                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12939                                                  */
12940                                                 MonoInst *callee = addr;
12941
12942                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12943                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12944                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12945                                         } else {
12946                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12947                                         }
12948                                 }
12949
12950                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12951                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12952
12953                                 CHECK_CFG_EXCEPTION;
12954
12955                                 ip += 6;
12956                                 ins_flag = 0;
12957                                 constrained_class = NULL;
12958                                 break;
12959                         }
12960                         default:
12961                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12962                                 break;
12963                         }
12964                         break;
12965                 }
12966
12967                 case CEE_PREFIX1: {
12968                         CHECK_OPSIZE (2);
12969                         switch (ip [1]) {
12970                         case CEE_ARGLIST: {
12971                                 /* somewhat similar to LDTOKEN */
12972                                 MonoInst *addr, *vtvar;
12973                                 CHECK_STACK_OVF (1);
12974                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12975
12976                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12977                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12978
12979                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12980                                 ins->type = STACK_VTYPE;
12981                                 ins->klass = mono_defaults.argumenthandle_class;
12982                                 *sp++ = ins;
12983                                 ip += 2;
12984                                 break;
12985                         }
12986                         case CEE_CEQ:
12987                         case CEE_CGT:
12988                         case CEE_CGT_UN:
12989                         case CEE_CLT:
12990                         case CEE_CLT_UN: {
12991                                 MonoInst *cmp, *arg1, *arg2;
12992
12993                                 CHECK_STACK (2);
12994                                 sp -= 2;
12995                                 arg1 = sp [0];
12996                                 arg2 = sp [1];
12997
12998                                 /*
12999                                  * The following transforms:
13000                                  *    CEE_CEQ    into OP_CEQ
13001                                  *    CEE_CGT    into OP_CGT
13002                                  *    CEE_CGT_UN into OP_CGT_UN
13003                                  *    CEE_CLT    into OP_CLT
13004                                  *    CEE_CLT_UN into OP_CLT_UN
13005                                  */
13006                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13007
13008                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13009                                 cmp->sreg1 = arg1->dreg;
13010                                 cmp->sreg2 = arg2->dreg;
13011                                 type_from_op (cfg, cmp, arg1, arg2);
13012                                 CHECK_TYPE (cmp);
13013                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13014                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13015                                         cmp->opcode = OP_LCOMPARE;
13016                                 else if (arg1->type == STACK_R4)
13017                                         cmp->opcode = OP_RCOMPARE;
13018                                 else if (arg1->type == STACK_R8)
13019                                         cmp->opcode = OP_FCOMPARE;
13020                                 else
13021                                         cmp->opcode = OP_ICOMPARE;
13022                                 MONO_ADD_INS (cfg->cbb, cmp);
13023                                 ins->type = STACK_I4;
13024                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13025                                 type_from_op (cfg, ins, arg1, arg2);
13026
13027                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13028                                         /*
13029                                          * The backends expect the fceq opcodes to do the
13030                                          * comparison too.
13031                                          */
13032                                         ins->sreg1 = cmp->sreg1;
13033                                         ins->sreg2 = cmp->sreg2;
13034                                         NULLIFY_INS (cmp);
13035                                 }
13036                                 MONO_ADD_INS (cfg->cbb, ins);
13037                                 *sp++ = ins;
13038                                 ip += 2;
13039                                 break;
13040                         }
13041                         case CEE_LDFTN: {
13042                                 MonoInst *argconst;
13043                                 MonoMethod *cil_method;
13044
13045                                 CHECK_STACK_OVF (1);
13046                                 CHECK_OPSIZE (6);
13047                                 n = read32 (ip + 2);
13048                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13049                                 CHECK_CFG_ERROR;
13050
13051                                 mono_class_init (cmethod->klass);
13052
13053                                 mono_save_token_info (cfg, image, n, cmethod);
13054
13055                                 context_used = mini_method_check_context_used (cfg, cmethod);
13056
13057                                 cil_method = cmethod;
13058                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13059                                         METHOD_ACCESS_FAILURE (method, cil_method);
13060
13061                                 if (mono_security_core_clr_enabled ())
13062                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13063
13064                                 /*
13065                                  * Optimize the common case of ldftn+delegate creation
13066                                  */
13067                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13068                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13069                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13070                                                 MonoInst *target_ins, *handle_ins;
13071                                                 MonoMethod *invoke;
13072                                                 int invoke_context_used;
13073
13074                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13075                                                 if (!invoke || !mono_method_signature (invoke))
13076                                                         LOAD_ERROR;
13077
13078                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13079
13080                                                 target_ins = sp [-1];
13081
13082                                                 if (mono_security_core_clr_enabled ())
13083                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13084
13085                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13086                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13087                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13088                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13089                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13090                                                         }
13091                                                 }
13092
13093                                                 /* FIXME: SGEN support */
13094                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13095                                                         ip += 6;
13096                                                         if (cfg->verbose_level > 3)
13097                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13098                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13099                                                                 sp --;
13100                                                                 *sp = handle_ins;
13101                                                                 CHECK_CFG_EXCEPTION;
13102                                                                 ip += 5;
13103                                                                 sp ++;
13104                                                                 break;
13105                                                         }
13106                                                         ip -= 6;
13107                                                 }
13108                                         }
13109                                 }
13110
13111                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13112                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13113                                 *sp++ = ins;
13114
13115                                 ip += 6;
13116                                 inline_costs += 10 * num_calls++;
13117                                 break;
13118                         }
13119                         case CEE_LDVIRTFTN: {
13120                                 MonoInst *args [2];
13121
13122                                 CHECK_STACK (1);
13123                                 CHECK_OPSIZE (6);
13124                                 n = read32 (ip + 2);
13125                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13126                                 CHECK_CFG_ERROR;
13127
13128                                 mono_class_init (cmethod->klass);
13129
13130                                 context_used = mini_method_check_context_used (cfg, cmethod);
13131
13132                                 if (mono_security_core_clr_enabled ())
13133                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13134
13135                                 /*
13136                                  * Optimize the common case of ldvirtftn+delegate creation
13137                                  */
13138                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ) && (ip > header->code && ip [-1] == CEE_DUP)) {
13139                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13140                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13141                                                 MonoInst *target_ins, *handle_ins;
13142                                                 MonoMethod *invoke;
13143                                                 int invoke_context_used;
13144                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13145
13146                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13147                                                 if (!invoke || !mono_method_signature (invoke))
13148                                                         LOAD_ERROR;
13149
13150                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13151
13152                                                 target_ins = sp [-1];
13153
13154                                                 if (mono_security_core_clr_enabled ())
13155                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13156
13157                                                 /* FIXME: SGEN support */
13158                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13159                                                         ip += 6;
13160                                                         if (cfg->verbose_level > 3)
13161                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13162                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13163                                                                 sp -= 2;
13164                                                                 *sp = handle_ins;
13165                                                                 CHECK_CFG_EXCEPTION;
13166                                                                 ip += 5;
13167                                                                 sp ++;
13168                                                                 break;
13169                                                         }
13170                                                         ip -= 6;
13171                                                 }
13172                                         }
13173                                 }
13174
13175                                 --sp;
13176                                 args [0] = *sp;
13177
13178                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13179                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13180
13181                                 if (context_used)
13182                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13183                                 else
13184                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13185
13186                                 ip += 6;
13187                                 inline_costs += 10 * num_calls++;
13188                                 break;
13189                         }
13190                         case CEE_LDARG:
13191                                 CHECK_STACK_OVF (1);
13192                                 CHECK_OPSIZE (4);
13193                                 n = read16 (ip + 2);
13194                                 CHECK_ARG (n);
13195                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13196                                 *sp++ = ins;
13197                                 ip += 4;
13198                                 break;
13199                         case CEE_LDARGA:
13200                                 CHECK_STACK_OVF (1);
13201                                 CHECK_OPSIZE (4);
13202                                 n = read16 (ip + 2);
13203                                 CHECK_ARG (n);
13204                                 NEW_ARGLOADA (cfg, ins, n);
13205                                 MONO_ADD_INS (cfg->cbb, ins);
13206                                 *sp++ = ins;
13207                                 ip += 4;
13208                                 break;
13209                         case CEE_STARG:
13210                                 CHECK_STACK (1);
13211                                 --sp;
13212                                 CHECK_OPSIZE (4);
13213                                 n = read16 (ip + 2);
13214                                 CHECK_ARG (n);
13215                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13216                                         UNVERIFIED;
13217                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13218                                 ip += 4;
13219                                 break;
13220                         case CEE_LDLOC:
13221                                 CHECK_STACK_OVF (1);
13222                                 CHECK_OPSIZE (4);
13223                                 n = read16 (ip + 2);
13224                                 CHECK_LOCAL (n);
13225                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13226                                 *sp++ = ins;
13227                                 ip += 4;
13228                                 break;
13229                         case CEE_LDLOCA: {
13230                                 unsigned char *tmp_ip;
13231                                 CHECK_STACK_OVF (1);
13232                                 CHECK_OPSIZE (4);
13233                                 n = read16 (ip + 2);
13234                                 CHECK_LOCAL (n);
13235
13236                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13237                                         ip = tmp_ip;
13238                                         inline_costs += 1;
13239                                         break;
13240                                 }
13241
13242                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13243                                 *sp++ = ins;
13244                                 ip += 4;
13245                                 break;
13246                         }
13247                         case CEE_STLOC:
13248                                 CHECK_STACK (1);
13249                                 --sp;
13250                                 CHECK_OPSIZE (4);
13251                                 n = read16 (ip + 2);
13252                                 CHECK_LOCAL (n);
13253                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13254                                         UNVERIFIED;
13255                                 emit_stloc_ir (cfg, sp, header, n);
13256                                 ip += 4;
13257                                 inline_costs += 1;
13258                                 break;
13259                         case CEE_LOCALLOC:
13260                                 CHECK_STACK (1);
13261                                 --sp;
13262                                 if (sp != stack_start)
13263                                         UNVERIFIED;
13264                                 if (cfg->method != method)
13265                                         /*
13266                                          * Inlining this into a loop in a parent could lead to
13267                                          * stack overflows which is different behavior than the
13268                                          * non-inlined case, thus disable inlining in this case.
13269                                          */
13270                                         INLINE_FAILURE("localloc");
13271
13272                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13273                                 ins->dreg = alloc_preg (cfg);
13274                                 ins->sreg1 = sp [0]->dreg;
13275                                 ins->type = STACK_PTR;
13276                                 MONO_ADD_INS (cfg->cbb, ins);
13277
13278                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13279                                 if (init_locals)
13280                                         ins->flags |= MONO_INST_INIT;
13281
13282                                 *sp++ = ins;
13283                                 ip += 2;
13284                                 break;
13285                         case CEE_ENDFILTER: {
13286                                 MonoExceptionClause *clause, *nearest;
13287                                 int cc;
13288
13289                                 CHECK_STACK (1);
13290                                 --sp;
13291                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13292                                         UNVERIFIED;
13293                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13294                                 ins->sreg1 = (*sp)->dreg;
13295                                 MONO_ADD_INS (cfg->cbb, ins);
13296                                 start_new_bblock = 1;
13297                                 ip += 2;
13298
13299                                 nearest = NULL;
13300                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13301                                         clause = &header->clauses [cc];
13302                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13303                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13304                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13305                                                 nearest = clause;
13306                                 }
13307                                 g_assert (nearest);
13308                                 if ((ip - header->code) != nearest->handler_offset)
13309                                         UNVERIFIED;
13310
13311                                 break;
13312                         }
13313                         case CEE_UNALIGNED_:
13314                                 ins_flag |= MONO_INST_UNALIGNED;
13315                                 /* FIXME: record alignment? we can assume 1 for now */
13316                                 CHECK_OPSIZE (3);
13317                                 ip += 3;
13318                                 break;
13319                         case CEE_VOLATILE_:
13320                                 ins_flag |= MONO_INST_VOLATILE;
13321                                 ip += 2;
13322                                 break;
13323                         case CEE_TAIL_:
13324                                 ins_flag   |= MONO_INST_TAILCALL;
13325                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13326                                 /* Can't inline tail calls at this time */
13327                                 inline_costs += 100000;
13328                                 ip += 2;
13329                                 break;
13330                         case CEE_INITOBJ:
13331                                 CHECK_STACK (1);
13332                                 --sp;
13333                                 CHECK_OPSIZE (6);
13334                                 token = read32 (ip + 2);
13335                                 klass = mini_get_class (method, token, generic_context);
13336                                 CHECK_TYPELOAD (klass);
13337                                 if (generic_class_is_reference_type (cfg, klass))
13338                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13339                                 else
13340                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13341                                 ip += 6;
13342                                 inline_costs += 1;
13343                                 break;
13344                         case CEE_CONSTRAINED_:
13345                                 CHECK_OPSIZE (6);
13346                                 token = read32 (ip + 2);
13347                                 constrained_class = mini_get_class (method, token, generic_context);
13348                                 CHECK_TYPELOAD (constrained_class);
13349                                 ip += 6;
13350                                 break;
13351                         case CEE_CPBLK:
13352                         case CEE_INITBLK: {
13353                                 MonoInst *iargs [3];
13354                                 CHECK_STACK (3);
13355                                 sp -= 3;
13356
13357                                 /* Skip optimized paths for volatile operations. */
13358                                 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)) {
13359                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13360                                 } 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)) {
13361                                         /* emit_memset only works when val == 0 */
13362                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13363                                 } else {
13364                                         MonoInst *call;
13365                                         iargs [0] = sp [0];
13366                                         iargs [1] = sp [1];
13367                                         iargs [2] = sp [2];
13368                                         if (ip [1] == CEE_CPBLK) {
13369                                                 /*
13370                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13371                                                  * and release barriers for cpblk. It is technically both a load and
13372                                                  * store operation, so it seems like that's the sensible thing to do.
13373                                                  *
13374                                                  * FIXME: We emit full barriers on both sides of the operation for
13375                                                  * simplicity. We should have a separate atomic memcpy method instead.
13376                                                  */
13377                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13378
13379                                                 if (ins_flag & MONO_INST_VOLATILE)
13380                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13381
13382                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13383                                                 call->flags |= ins_flag;
13384
13385                                                 if (ins_flag & MONO_INST_VOLATILE)
13386                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13387                                         } else {
13388                                                 MonoMethod *memset_method = get_memset_method ();
13389                                                 if (ins_flag & MONO_INST_VOLATILE) {
13390                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13391                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13392                                                 }
13393                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13394                                                 call->flags |= ins_flag;
13395                                         }
13396                                 }
13397                                 ip += 2;
13398                                 ins_flag = 0;
13399                                 inline_costs += 1;
13400                                 break;
13401                         }
13402                         case CEE_NO_:
13403                                 CHECK_OPSIZE (3);
13404                                 if (ip [2] & 0x1)
13405                                         ins_flag |= MONO_INST_NOTYPECHECK;
13406                                 if (ip [2] & 0x2)
13407                                         ins_flag |= MONO_INST_NORANGECHECK;
13408                                 /* we ignore the no-nullcheck for now since we
13409                                  * really do it explicitly only when doing callvirt->call
13410                                  */
13411                                 ip += 3;
13412                                 break;
13413                         case CEE_RETHROW: {
13414                                 MonoInst *load;
13415                                 int handler_offset = -1;
13416
13417                                 for (i = 0; i < header->num_clauses; ++i) {
13418                                         MonoExceptionClause *clause = &header->clauses [i];
13419                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13420                                                 handler_offset = clause->handler_offset;
13421                                                 break;
13422                                         }
13423                                 }
13424
13425                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13426
13427                                 if (handler_offset == -1)
13428                                         UNVERIFIED;
13429
13430                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13431                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13432                                 ins->sreg1 = load->dreg;
13433                                 MONO_ADD_INS (cfg->cbb, ins);
13434
13435                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13436                                 MONO_ADD_INS (cfg->cbb, ins);
13437
13438                                 sp = stack_start;
13439                                 link_bblock (cfg, cfg->cbb, end_bblock);
13440                                 start_new_bblock = 1;
13441                                 ip += 2;
13442                                 break;
13443                         }
13444                         case CEE_SIZEOF: {
13445                                 guint32 val;
13446                                 int ialign;
13447
13448                                 CHECK_STACK_OVF (1);
13449                                 CHECK_OPSIZE (6);
13450                                 token = read32 (ip + 2);
13451                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13452                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13453                                         CHECK_CFG_ERROR;
13454
13455                                         val = mono_type_size (type, &ialign);
13456                                 } else {
13457                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13458                                         CHECK_TYPELOAD (klass);
13459
13460                                         val = mono_type_size (&klass->byval_arg, &ialign);
13461
13462                                         if (mini_is_gsharedvt_klass (klass))
13463                                                 GSHAREDVT_FAILURE (*ip);
13464                                 }
13465                                 EMIT_NEW_ICONST (cfg, ins, val);
13466                                 *sp++= ins;
13467                                 ip += 6;
13468                                 break;
13469                         }
13470                         case CEE_REFANYTYPE: {
13471                                 MonoInst *src_var, *src;
13472
13473                                 GSHAREDVT_FAILURE (*ip);
13474
13475                                 CHECK_STACK (1);
13476                                 --sp;
13477
13478                                 // FIXME:
13479                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13480                                 if (!src_var)
13481                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13482                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13483                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13484                                 *sp++ = ins;
13485                                 ip += 2;
13486                                 break;
13487                         }
13488                         case CEE_READONLY_:
13489                                 readonly = TRUE;
13490                                 ip += 2;
13491                                 break;
13492
13493                         case CEE_UNUSED56:
13494                         case CEE_UNUSED57:
13495                         case CEE_UNUSED70:
13496                         case CEE_UNUSED:
13497                         case CEE_UNUSED99:
13498                                 UNVERIFIED;
13499
13500                         default:
13501                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13502                                 UNVERIFIED;
13503                         }
13504                         break;
13505                 }
13506                 case CEE_UNUSED58:
13507                 case CEE_UNUSED1:
13508                         UNVERIFIED;
13509
13510                 default:
13511                         g_warning ("opcode 0x%02x not handled", *ip);
13512                         UNVERIFIED;
13513                 }
13514         }
13515         if (start_new_bblock != 1)
13516                 UNVERIFIED;
13517
13518         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13519         if (cfg->cbb->next_bb) {
13520                 /* This could already be set because of inlining, #693905 */
13521                 MonoBasicBlock *bb = cfg->cbb;
13522
13523                 while (bb->next_bb)
13524                         bb = bb->next_bb;
13525                 bb->next_bb = end_bblock;
13526         } else {
13527                 cfg->cbb->next_bb = end_bblock;
13528         }
13529
13530         if (cfg->method == method && cfg->domainvar) {
13531                 MonoInst *store;
13532                 MonoInst *get_domain;
13533
13534                 cfg->cbb = init_localsbb;
13535
13536                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13537                         MONO_ADD_INS (cfg->cbb, get_domain);
13538                 } else {
13539                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13540                 }
13541                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13542                 MONO_ADD_INS (cfg->cbb, store);
13543         }
13544
13545 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13546         if (cfg->compile_aot)
13547                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13548                 mono_get_got_var (cfg);
13549 #endif
13550
13551         if (cfg->method == method && cfg->got_var)
13552                 mono_emit_load_got_addr (cfg);
13553
13554         if (init_localsbb) {
13555                 cfg->cbb = init_localsbb;
13556                 cfg->ip = NULL;
13557                 for (i = 0; i < header->num_locals; ++i) {
13558                         emit_init_local (cfg, i, header->locals [i], init_locals);
13559                 }
13560         }
13561
13562         if (cfg->init_ref_vars && cfg->method == method) {
13563                 /* Emit initialization for ref vars */
13564                 // FIXME: Avoid duplication initialization for IL locals.
13565                 for (i = 0; i < cfg->num_varinfo; ++i) {
13566                         MonoInst *ins = cfg->varinfo [i];
13567
13568                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13569                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13570                 }
13571         }
13572
13573         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13574                 cfg->cbb = init_localsbb;
13575                 emit_push_lmf (cfg);
13576         }
13577
13578         cfg->cbb = init_localsbb;
13579         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13580
13581         if (seq_points) {
13582                 MonoBasicBlock *bb;
13583
13584                 /*
13585                  * Make seq points at backward branch targets interruptable.
13586                  */
13587                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13588                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13589                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13590         }
13591
13592         /* Add a sequence point for method entry/exit events */
13593         if (seq_points && cfg->gen_sdb_seq_points) {
13594                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13595                 MONO_ADD_INS (init_localsbb, ins);
13596                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13597                 MONO_ADD_INS (cfg->bb_exit, ins);
13598         }
13599
13600         /*
13601          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13602          * the code they refer to was dead (#11880).
13603          */
13604         if (sym_seq_points) {
13605                 for (i = 0; i < header->code_size; ++i) {
13606                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13607                                 MonoInst *ins;
13608
13609                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13610                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13611                         }
13612                 }
13613         }
13614
13615         cfg->ip = NULL;
13616
13617         if (cfg->method == method) {
13618                 MonoBasicBlock *bb;
13619                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13620                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13621                         if (cfg->spvars)
13622                                 mono_create_spvar_for_region (cfg, bb->region);
13623                         if (cfg->verbose_level > 2)
13624                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13625                 }
13626         }
13627
13628         if (inline_costs < 0) {
13629                 char *mname;
13630
13631                 /* Method is too large */
13632                 mname = mono_method_full_name (method, TRUE);
13633                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13634                 g_free (mname);
13635         }
13636
13637         if ((cfg->verbose_level > 2) && (cfg->method == method))
13638                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13639
13640         goto cleanup;
13641
13642 mono_error_exit:
13643         g_assert (!mono_error_ok (&cfg->error));
13644         goto cleanup;
13645
13646  exception_exit:
13647         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13648         goto cleanup;
13649
13650  unverified:
13651         set_exception_type_from_invalid_il (cfg, method, ip);
13652         goto cleanup;
13653
13654  cleanup:
13655         g_slist_free (class_inits);
13656         mono_basic_block_free (original_bb);
13657         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13658         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13659         if (cfg->exception_type)
13660                 return -1;
13661         else
13662                 return inline_costs;
13663 }
13664
13665 static int
13666 store_membase_reg_to_store_membase_imm (int opcode)
13667 {
13668         switch (opcode) {
13669         case OP_STORE_MEMBASE_REG:
13670                 return OP_STORE_MEMBASE_IMM;
13671         case OP_STOREI1_MEMBASE_REG:
13672                 return OP_STOREI1_MEMBASE_IMM;
13673         case OP_STOREI2_MEMBASE_REG:
13674                 return OP_STOREI2_MEMBASE_IMM;
13675         case OP_STOREI4_MEMBASE_REG:
13676                 return OP_STOREI4_MEMBASE_IMM;
13677         case OP_STOREI8_MEMBASE_REG:
13678                 return OP_STOREI8_MEMBASE_IMM;
13679         default:
13680                 g_assert_not_reached ();
13681         }
13682
13683         return -1;
13684 }
13685
13686 int
13687 mono_op_to_op_imm (int opcode)
13688 {
13689         switch (opcode) {
13690         case OP_IADD:
13691                 return OP_IADD_IMM;
13692         case OP_ISUB:
13693                 return OP_ISUB_IMM;
13694         case OP_IDIV:
13695                 return OP_IDIV_IMM;
13696         case OP_IDIV_UN:
13697                 return OP_IDIV_UN_IMM;
13698         case OP_IREM:
13699                 return OP_IREM_IMM;
13700         case OP_IREM_UN:
13701                 return OP_IREM_UN_IMM;
13702         case OP_IMUL:
13703                 return OP_IMUL_IMM;
13704         case OP_IAND:
13705                 return OP_IAND_IMM;
13706         case OP_IOR:
13707                 return OP_IOR_IMM;
13708         case OP_IXOR:
13709                 return OP_IXOR_IMM;
13710         case OP_ISHL:
13711                 return OP_ISHL_IMM;
13712         case OP_ISHR:
13713                 return OP_ISHR_IMM;
13714         case OP_ISHR_UN:
13715                 return OP_ISHR_UN_IMM;
13716
13717         case OP_LADD:
13718                 return OP_LADD_IMM;
13719         case OP_LSUB:
13720                 return OP_LSUB_IMM;
13721         case OP_LAND:
13722                 return OP_LAND_IMM;
13723         case OP_LOR:
13724                 return OP_LOR_IMM;
13725         case OP_LXOR:
13726                 return OP_LXOR_IMM;
13727         case OP_LSHL:
13728                 return OP_LSHL_IMM;
13729         case OP_LSHR:
13730                 return OP_LSHR_IMM;
13731         case OP_LSHR_UN:
13732                 return OP_LSHR_UN_IMM;
13733 #if SIZEOF_REGISTER == 8
13734         case OP_LREM:
13735                 return OP_LREM_IMM;
13736 #endif
13737
13738         case OP_COMPARE:
13739                 return OP_COMPARE_IMM;
13740         case OP_ICOMPARE:
13741                 return OP_ICOMPARE_IMM;
13742         case OP_LCOMPARE:
13743                 return OP_LCOMPARE_IMM;
13744
13745         case OP_STORE_MEMBASE_REG:
13746                 return OP_STORE_MEMBASE_IMM;
13747         case OP_STOREI1_MEMBASE_REG:
13748                 return OP_STOREI1_MEMBASE_IMM;
13749         case OP_STOREI2_MEMBASE_REG:
13750                 return OP_STOREI2_MEMBASE_IMM;
13751         case OP_STOREI4_MEMBASE_REG:
13752                 return OP_STOREI4_MEMBASE_IMM;
13753
13754 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13755         case OP_X86_PUSH:
13756                 return OP_X86_PUSH_IMM;
13757         case OP_X86_COMPARE_MEMBASE_REG:
13758                 return OP_X86_COMPARE_MEMBASE_IMM;
13759 #endif
13760 #if defined(TARGET_AMD64)
13761         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13762                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13763 #endif
13764         case OP_VOIDCALL_REG:
13765                 return OP_VOIDCALL;
13766         case OP_CALL_REG:
13767                 return OP_CALL;
13768         case OP_LCALL_REG:
13769                 return OP_LCALL;
13770         case OP_FCALL_REG:
13771                 return OP_FCALL;
13772         case OP_LOCALLOC:
13773                 return OP_LOCALLOC_IMM;
13774         }
13775
13776         return -1;
13777 }
13778
13779 static int
13780 ldind_to_load_membase (int opcode)
13781 {
13782         switch (opcode) {
13783         case CEE_LDIND_I1:
13784                 return OP_LOADI1_MEMBASE;
13785         case CEE_LDIND_U1:
13786                 return OP_LOADU1_MEMBASE;
13787         case CEE_LDIND_I2:
13788                 return OP_LOADI2_MEMBASE;
13789         case CEE_LDIND_U2:
13790                 return OP_LOADU2_MEMBASE;
13791         case CEE_LDIND_I4:
13792                 return OP_LOADI4_MEMBASE;
13793         case CEE_LDIND_U4:
13794                 return OP_LOADU4_MEMBASE;
13795         case CEE_LDIND_I:
13796                 return OP_LOAD_MEMBASE;
13797         case CEE_LDIND_REF:
13798                 return OP_LOAD_MEMBASE;
13799         case CEE_LDIND_I8:
13800                 return OP_LOADI8_MEMBASE;
13801         case CEE_LDIND_R4:
13802                 return OP_LOADR4_MEMBASE;
13803         case CEE_LDIND_R8:
13804                 return OP_LOADR8_MEMBASE;
13805         default:
13806                 g_assert_not_reached ();
13807         }
13808
13809         return -1;
13810 }
13811
13812 static int
13813 stind_to_store_membase (int opcode)
13814 {
13815         switch (opcode) {
13816         case CEE_STIND_I1:
13817                 return OP_STOREI1_MEMBASE_REG;
13818         case CEE_STIND_I2:
13819                 return OP_STOREI2_MEMBASE_REG;
13820         case CEE_STIND_I4:
13821                 return OP_STOREI4_MEMBASE_REG;
13822         case CEE_STIND_I:
13823         case CEE_STIND_REF:
13824                 return OP_STORE_MEMBASE_REG;
13825         case CEE_STIND_I8:
13826                 return OP_STOREI8_MEMBASE_REG;
13827         case CEE_STIND_R4:
13828                 return OP_STORER4_MEMBASE_REG;
13829         case CEE_STIND_R8:
13830                 return OP_STORER8_MEMBASE_REG;
13831         default:
13832                 g_assert_not_reached ();
13833         }
13834
13835         return -1;
13836 }
13837
13838 int
13839 mono_load_membase_to_load_mem (int opcode)
13840 {
13841         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13842 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13843         switch (opcode) {
13844         case OP_LOAD_MEMBASE:
13845                 return OP_LOAD_MEM;
13846         case OP_LOADU1_MEMBASE:
13847                 return OP_LOADU1_MEM;
13848         case OP_LOADU2_MEMBASE:
13849                 return OP_LOADU2_MEM;
13850         case OP_LOADI4_MEMBASE:
13851                 return OP_LOADI4_MEM;
13852         case OP_LOADU4_MEMBASE:
13853                 return OP_LOADU4_MEM;
13854 #if SIZEOF_REGISTER == 8
13855         case OP_LOADI8_MEMBASE:
13856                 return OP_LOADI8_MEM;
13857 #endif
13858         }
13859 #endif
13860
13861         return -1;
13862 }
13863
13864 static inline int
13865 op_to_op_dest_membase (int store_opcode, int opcode)
13866 {
13867 #if defined(TARGET_X86)
13868         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13869                 return -1;
13870
13871         switch (opcode) {
13872         case OP_IADD:
13873                 return OP_X86_ADD_MEMBASE_REG;
13874         case OP_ISUB:
13875                 return OP_X86_SUB_MEMBASE_REG;
13876         case OP_IAND:
13877                 return OP_X86_AND_MEMBASE_REG;
13878         case OP_IOR:
13879                 return OP_X86_OR_MEMBASE_REG;
13880         case OP_IXOR:
13881                 return OP_X86_XOR_MEMBASE_REG;
13882         case OP_ADD_IMM:
13883         case OP_IADD_IMM:
13884                 return OP_X86_ADD_MEMBASE_IMM;
13885         case OP_SUB_IMM:
13886         case OP_ISUB_IMM:
13887                 return OP_X86_SUB_MEMBASE_IMM;
13888         case OP_AND_IMM:
13889         case OP_IAND_IMM:
13890                 return OP_X86_AND_MEMBASE_IMM;
13891         case OP_OR_IMM:
13892         case OP_IOR_IMM:
13893                 return OP_X86_OR_MEMBASE_IMM;
13894         case OP_XOR_IMM:
13895         case OP_IXOR_IMM:
13896                 return OP_X86_XOR_MEMBASE_IMM;
13897         case OP_MOVE:
13898                 return OP_NOP;
13899         }
13900 #endif
13901
13902 #if defined(TARGET_AMD64)
13903         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13904                 return -1;
13905
13906         switch (opcode) {
13907         case OP_IADD:
13908                 return OP_X86_ADD_MEMBASE_REG;
13909         case OP_ISUB:
13910                 return OP_X86_SUB_MEMBASE_REG;
13911         case OP_IAND:
13912                 return OP_X86_AND_MEMBASE_REG;
13913         case OP_IOR:
13914                 return OP_X86_OR_MEMBASE_REG;
13915         case OP_IXOR:
13916                 return OP_X86_XOR_MEMBASE_REG;
13917         case OP_IADD_IMM:
13918                 return OP_X86_ADD_MEMBASE_IMM;
13919         case OP_ISUB_IMM:
13920                 return OP_X86_SUB_MEMBASE_IMM;
13921         case OP_IAND_IMM:
13922                 return OP_X86_AND_MEMBASE_IMM;
13923         case OP_IOR_IMM:
13924                 return OP_X86_OR_MEMBASE_IMM;
13925         case OP_IXOR_IMM:
13926                 return OP_X86_XOR_MEMBASE_IMM;
13927         case OP_LADD:
13928                 return OP_AMD64_ADD_MEMBASE_REG;
13929         case OP_LSUB:
13930                 return OP_AMD64_SUB_MEMBASE_REG;
13931         case OP_LAND:
13932                 return OP_AMD64_AND_MEMBASE_REG;
13933         case OP_LOR:
13934                 return OP_AMD64_OR_MEMBASE_REG;
13935         case OP_LXOR:
13936                 return OP_AMD64_XOR_MEMBASE_REG;
13937         case OP_ADD_IMM:
13938         case OP_LADD_IMM:
13939                 return OP_AMD64_ADD_MEMBASE_IMM;
13940         case OP_SUB_IMM:
13941         case OP_LSUB_IMM:
13942                 return OP_AMD64_SUB_MEMBASE_IMM;
13943         case OP_AND_IMM:
13944         case OP_LAND_IMM:
13945                 return OP_AMD64_AND_MEMBASE_IMM;
13946         case OP_OR_IMM:
13947         case OP_LOR_IMM:
13948                 return OP_AMD64_OR_MEMBASE_IMM;
13949         case OP_XOR_IMM:
13950         case OP_LXOR_IMM:
13951                 return OP_AMD64_XOR_MEMBASE_IMM;
13952         case OP_MOVE:
13953                 return OP_NOP;
13954         }
13955 #endif
13956
13957         return -1;
13958 }
13959
13960 static inline int
13961 op_to_op_store_membase (int store_opcode, int opcode)
13962 {
13963 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13964         switch (opcode) {
13965         case OP_ICEQ:
13966                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13967                         return OP_X86_SETEQ_MEMBASE;
13968         case OP_CNE:
13969                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13970                         return OP_X86_SETNE_MEMBASE;
13971         }
13972 #endif
13973
13974         return -1;
13975 }
13976
13977 static inline int
13978 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13979 {
13980 #ifdef TARGET_X86
13981         /* FIXME: This has sign extension issues */
13982         /*
13983         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13984                 return OP_X86_COMPARE_MEMBASE8_IMM;
13985         */
13986
13987         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13988                 return -1;
13989
13990         switch (opcode) {
13991         case OP_X86_PUSH:
13992                 return OP_X86_PUSH_MEMBASE;
13993         case OP_COMPARE_IMM:
13994         case OP_ICOMPARE_IMM:
13995                 return OP_X86_COMPARE_MEMBASE_IMM;
13996         case OP_COMPARE:
13997         case OP_ICOMPARE:
13998                 return OP_X86_COMPARE_MEMBASE_REG;
13999         }
14000 #endif
14001
14002 #ifdef TARGET_AMD64
14003         /* FIXME: This has sign extension issues */
14004         /*
14005         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14006                 return OP_X86_COMPARE_MEMBASE8_IMM;
14007         */
14008
14009         switch (opcode) {
14010         case OP_X86_PUSH:
14011                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14012                         return OP_X86_PUSH_MEMBASE;
14013                 break;
14014                 /* FIXME: This only works for 32 bit immediates
14015         case OP_COMPARE_IMM:
14016         case OP_LCOMPARE_IMM:
14017                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14018                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14019                 */
14020         case OP_ICOMPARE_IMM:
14021                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14022                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14023                 break;
14024         case OP_COMPARE:
14025         case OP_LCOMPARE:
14026                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14027                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14028                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14029                         return OP_AMD64_COMPARE_MEMBASE_REG;
14030                 break;
14031         case OP_ICOMPARE:
14032                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14033                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14034                 break;
14035         }
14036 #endif
14037
14038         return -1;
14039 }
14040
14041 static inline int
14042 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14043 {
14044 #ifdef TARGET_X86
14045         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14046                 return -1;
14047
14048         switch (opcode) {
14049         case OP_COMPARE:
14050         case OP_ICOMPARE:
14051                 return OP_X86_COMPARE_REG_MEMBASE;
14052         case OP_IADD:
14053                 return OP_X86_ADD_REG_MEMBASE;
14054         case OP_ISUB:
14055                 return OP_X86_SUB_REG_MEMBASE;
14056         case OP_IAND:
14057                 return OP_X86_AND_REG_MEMBASE;
14058         case OP_IOR:
14059                 return OP_X86_OR_REG_MEMBASE;
14060         case OP_IXOR:
14061                 return OP_X86_XOR_REG_MEMBASE;
14062         }
14063 #endif
14064
14065 #ifdef TARGET_AMD64
14066         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14067                 switch (opcode) {
14068                 case OP_ICOMPARE:
14069                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14070                 case OP_IADD:
14071                         return OP_X86_ADD_REG_MEMBASE;
14072                 case OP_ISUB:
14073                         return OP_X86_SUB_REG_MEMBASE;
14074                 case OP_IAND:
14075                         return OP_X86_AND_REG_MEMBASE;
14076                 case OP_IOR:
14077                         return OP_X86_OR_REG_MEMBASE;
14078                 case OP_IXOR:
14079                         return OP_X86_XOR_REG_MEMBASE;
14080                 }
14081         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14082                 switch (opcode) {
14083                 case OP_COMPARE:
14084                 case OP_LCOMPARE:
14085                         return OP_AMD64_COMPARE_REG_MEMBASE;
14086                 case OP_LADD:
14087                         return OP_AMD64_ADD_REG_MEMBASE;
14088                 case OP_LSUB:
14089                         return OP_AMD64_SUB_REG_MEMBASE;
14090                 case OP_LAND:
14091                         return OP_AMD64_AND_REG_MEMBASE;
14092                 case OP_LOR:
14093                         return OP_AMD64_OR_REG_MEMBASE;
14094                 case OP_LXOR:
14095                         return OP_AMD64_XOR_REG_MEMBASE;
14096                 }
14097         }
14098 #endif
14099
14100         return -1;
14101 }
14102
14103 int
14104 mono_op_to_op_imm_noemul (int opcode)
14105 {
14106         switch (opcode) {
14107 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14108         case OP_LSHR:
14109         case OP_LSHL:
14110         case OP_LSHR_UN:
14111                 return -1;
14112 #endif
14113 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14114         case OP_IDIV:
14115         case OP_IDIV_UN:
14116         case OP_IREM:
14117         case OP_IREM_UN:
14118                 return -1;
14119 #endif
14120 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14121         case OP_IMUL:
14122                 return -1;
14123 #endif
14124         default:
14125                 return mono_op_to_op_imm (opcode);
14126         }
14127 }
14128
14129 /**
14130  * mono_handle_global_vregs:
14131  *
14132  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14133  * for them.
14134  */
14135 void
14136 mono_handle_global_vregs (MonoCompile *cfg)
14137 {
14138         gint32 *vreg_to_bb;
14139         MonoBasicBlock *bb;
14140         int i, pos;
14141
14142         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14143
14144 #ifdef MONO_ARCH_SIMD_INTRINSICS
14145         if (cfg->uses_simd_intrinsics)
14146                 mono_simd_simplify_indirection (cfg);
14147 #endif
14148
14149         /* Find local vregs used in more than one bb */
14150         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14151                 MonoInst *ins = bb->code;
14152                 int block_num = bb->block_num;
14153
14154                 if (cfg->verbose_level > 2)
14155                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14156
14157                 cfg->cbb = bb;
14158                 for (; ins; ins = ins->next) {
14159                         const char *spec = INS_INFO (ins->opcode);
14160                         int regtype = 0, regindex;
14161                         gint32 prev_bb;
14162
14163                         if (G_UNLIKELY (cfg->verbose_level > 2))
14164                                 mono_print_ins (ins);
14165
14166                         g_assert (ins->opcode >= MONO_CEE_LAST);
14167
14168                         for (regindex = 0; regindex < 4; regindex ++) {
14169                                 int vreg = 0;
14170
14171                                 if (regindex == 0) {
14172                                         regtype = spec [MONO_INST_DEST];
14173                                         if (regtype == ' ')
14174                                                 continue;
14175                                         vreg = ins->dreg;
14176                                 } else if (regindex == 1) {
14177                                         regtype = spec [MONO_INST_SRC1];
14178                                         if (regtype == ' ')
14179                                                 continue;
14180                                         vreg = ins->sreg1;
14181                                 } else if (regindex == 2) {
14182                                         regtype = spec [MONO_INST_SRC2];
14183                                         if (regtype == ' ')
14184                                                 continue;
14185                                         vreg = ins->sreg2;
14186                                 } else if (regindex == 3) {
14187                                         regtype = spec [MONO_INST_SRC3];
14188                                         if (regtype == ' ')
14189                                                 continue;
14190                                         vreg = ins->sreg3;
14191                                 }
14192
14193 #if SIZEOF_REGISTER == 4
14194                                 /* In the LLVM case, the long opcodes are not decomposed */
14195                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14196                                         /*
14197                                          * Since some instructions reference the original long vreg,
14198                                          * and some reference the two component vregs, it is quite hard
14199                                          * to determine when it needs to be global. So be conservative.
14200                                          */
14201                                         if (!get_vreg_to_inst (cfg, vreg)) {
14202                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14203
14204                                                 if (cfg->verbose_level > 2)
14205                                                         printf ("LONG VREG R%d made global.\n", vreg);
14206                                         }
14207
14208                                         /*
14209                                          * Make the component vregs volatile since the optimizations can
14210                                          * get confused otherwise.
14211                                          */
14212                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14213                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14214                                 }
14215 #endif
14216
14217                                 g_assert (vreg != -1);
14218
14219                                 prev_bb = vreg_to_bb [vreg];
14220                                 if (prev_bb == 0) {
14221                                         /* 0 is a valid block num */
14222                                         vreg_to_bb [vreg] = block_num + 1;
14223                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14224                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14225                                                 continue;
14226
14227                                         if (!get_vreg_to_inst (cfg, vreg)) {
14228                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14229                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14230
14231                                                 switch (regtype) {
14232                                                 case 'i':
14233                                                         if (vreg_is_ref (cfg, vreg))
14234                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14235                                                         else
14236                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14237                                                         break;
14238                                                 case 'l':
14239                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14240                                                         break;
14241                                                 case 'f':
14242                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14243                                                         break;
14244                                                 case 'v':
14245                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14246                                                         break;
14247                                                 default:
14248                                                         g_assert_not_reached ();
14249                                                 }
14250                                         }
14251
14252                                         /* Flag as having been used in more than one bb */
14253                                         vreg_to_bb [vreg] = -1;
14254                                 }
14255                         }
14256                 }
14257         }
14258
14259         /* If a variable is used in only one bblock, convert it into a local vreg */
14260         for (i = 0; i < cfg->num_varinfo; i++) {
14261                 MonoInst *var = cfg->varinfo [i];
14262                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14263
14264                 switch (var->type) {
14265                 case STACK_I4:
14266                 case STACK_OBJ:
14267                 case STACK_PTR:
14268                 case STACK_MP:
14269                 case STACK_VTYPE:
14270 #if SIZEOF_REGISTER == 8
14271                 case STACK_I8:
14272 #endif
14273 #if !defined(TARGET_X86)
14274                 /* Enabling this screws up the fp stack on x86 */
14275                 case STACK_R8:
14276 #endif
14277                         if (mono_arch_is_soft_float ())
14278                                 break;
14279
14280                         /*
14281                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14282                                 break;
14283                         */
14284
14285                         /* Arguments are implicitly global */
14286                         /* Putting R4 vars into registers doesn't work currently */
14287                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14288                         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) {
14289                                 /*
14290                                  * Make that the variable's liveness interval doesn't contain a call, since
14291                                  * that would cause the lvreg to be spilled, making the whole optimization
14292                                  * useless.
14293                                  */
14294                                 /* This is too slow for JIT compilation */
14295 #if 0
14296                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14297                                         MonoInst *ins;
14298                                         int def_index, call_index, ins_index;
14299                                         gboolean spilled = FALSE;
14300
14301                                         def_index = -1;
14302                                         call_index = -1;
14303                                         ins_index = 0;
14304                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14305                                                 const char *spec = INS_INFO (ins->opcode);
14306
14307                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14308                                                         def_index = ins_index;
14309
14310                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14311                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14312                                                         if (call_index > def_index) {
14313                                                                 spilled = TRUE;
14314                                                                 break;
14315                                                         }
14316                                                 }
14317
14318                                                 if (MONO_IS_CALL (ins))
14319                                                         call_index = ins_index;
14320
14321                                                 ins_index ++;
14322                                         }
14323
14324                                         if (spilled)
14325                                                 break;
14326                                 }
14327 #endif
14328
14329                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14330                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14331                                 var->flags |= MONO_INST_IS_DEAD;
14332                                 cfg->vreg_to_inst [var->dreg] = NULL;
14333                         }
14334                         break;
14335                 }
14336         }
14337
14338         /*
14339          * Compress the varinfo and vars tables so the liveness computation is faster and
14340          * takes up less space.
14341          */
14342         pos = 0;
14343         for (i = 0; i < cfg->num_varinfo; ++i) {
14344                 MonoInst *var = cfg->varinfo [i];
14345                 if (pos < i && cfg->locals_start == i)
14346                         cfg->locals_start = pos;
14347                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14348                         if (pos < i) {
14349                                 cfg->varinfo [pos] = cfg->varinfo [i];
14350                                 cfg->varinfo [pos]->inst_c0 = pos;
14351                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14352                                 cfg->vars [pos].idx = pos;
14353 #if SIZEOF_REGISTER == 4
14354                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14355                                         /* Modify the two component vars too */
14356                                         MonoInst *var1;
14357
14358                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14359                                         var1->inst_c0 = pos;
14360                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14361                                         var1->inst_c0 = pos;
14362                                 }
14363 #endif
14364                         }
14365                         pos ++;
14366                 }
14367         }
14368         cfg->num_varinfo = pos;
14369         if (cfg->locals_start > cfg->num_varinfo)
14370                 cfg->locals_start = cfg->num_varinfo;
14371 }
14372
14373 /*
14374  * mono_allocate_gsharedvt_vars:
14375  *
14376  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14377  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14378  */
14379 void
14380 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14381 {
14382         int i;
14383
14384         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14385
14386         for (i = 0; i < cfg->num_varinfo; ++i) {
14387                 MonoInst *ins = cfg->varinfo [i];
14388                 int idx;
14389
14390                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14391                         if (i >= cfg->locals_start) {
14392                                 /* Local */
14393                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14394                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14395                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14396                                 ins->inst_imm = idx;
14397                         } else {
14398                                 /* Arg */
14399                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14400                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14401                         }
14402                 }
14403         }
14404 }
14405
14406 /**
14407  * mono_spill_global_vars:
14408  *
14409  *   Generate spill code for variables which are not allocated to registers,
14410  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14411  * code is generated which could be optimized by the local optimization passes.
14412  */
14413 void
14414 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14415 {
14416         MonoBasicBlock *bb;
14417         char spec2 [16];
14418         int orig_next_vreg;
14419         guint32 *vreg_to_lvreg;
14420         guint32 *lvregs;
14421         guint32 i, lvregs_len;
14422         gboolean dest_has_lvreg = FALSE;
14423         MonoStackType stacktypes [128];
14424         MonoInst **live_range_start, **live_range_end;
14425         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14426
14427         *need_local_opts = FALSE;
14428
14429         memset (spec2, 0, sizeof (spec2));
14430
14431         /* FIXME: Move this function to mini.c */
14432         stacktypes ['i'] = STACK_PTR;
14433         stacktypes ['l'] = STACK_I8;
14434         stacktypes ['f'] = STACK_R8;
14435 #ifdef MONO_ARCH_SIMD_INTRINSICS
14436         stacktypes ['x'] = STACK_VTYPE;
14437 #endif
14438
14439 #if SIZEOF_REGISTER == 4
14440         /* Create MonoInsts for longs */
14441         for (i = 0; i < cfg->num_varinfo; i++) {
14442                 MonoInst *ins = cfg->varinfo [i];
14443
14444                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14445                         switch (ins->type) {
14446                         case STACK_R8:
14447                         case STACK_I8: {
14448                                 MonoInst *tree;
14449
14450                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14451                                         break;
14452
14453                                 g_assert (ins->opcode == OP_REGOFFSET);
14454
14455                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14456                                 g_assert (tree);
14457                                 tree->opcode = OP_REGOFFSET;
14458                                 tree->inst_basereg = ins->inst_basereg;
14459                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14460
14461                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14462                                 g_assert (tree);
14463                                 tree->opcode = OP_REGOFFSET;
14464                                 tree->inst_basereg = ins->inst_basereg;
14465                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14466                                 break;
14467                         }
14468                         default:
14469                                 break;
14470                         }
14471                 }
14472         }
14473 #endif
14474
14475         if (cfg->compute_gc_maps) {
14476                 /* registers need liveness info even for !non refs */
14477                 for (i = 0; i < cfg->num_varinfo; i++) {
14478                         MonoInst *ins = cfg->varinfo [i];
14479
14480                         if (ins->opcode == OP_REGVAR)
14481                                 ins->flags |= MONO_INST_GC_TRACK;
14482                 }
14483         }
14484
14485         /* FIXME: widening and truncation */
14486
14487         /*
14488          * As an optimization, when a variable allocated to the stack is first loaded into
14489          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14490          * the variable again.
14491          */
14492         orig_next_vreg = cfg->next_vreg;
14493         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14494         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14495         lvregs_len = 0;
14496
14497         /*
14498          * These arrays contain the first and last instructions accessing a given
14499          * variable.
14500          * Since we emit bblocks in the same order we process them here, and we
14501          * don't split live ranges, these will precisely describe the live range of
14502          * the variable, i.e. the instruction range where a valid value can be found
14503          * in the variables location.
14504          * The live range is computed using the liveness info computed by the liveness pass.
14505          * We can't use vmv->range, since that is an abstract live range, and we need
14506          * one which is instruction precise.
14507          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14508          */
14509         /* FIXME: Only do this if debugging info is requested */
14510         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14511         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14512         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14513         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14514
14515         /* Add spill loads/stores */
14516         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14517                 MonoInst *ins;
14518
14519                 if (cfg->verbose_level > 2)
14520                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14521
14522                 /* Clear vreg_to_lvreg array */
14523                 for (i = 0; i < lvregs_len; i++)
14524                         vreg_to_lvreg [lvregs [i]] = 0;
14525                 lvregs_len = 0;
14526
14527                 cfg->cbb = bb;
14528                 MONO_BB_FOR_EACH_INS (bb, ins) {
14529                         const char *spec = INS_INFO (ins->opcode);
14530                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14531                         gboolean store, no_lvreg;
14532                         int sregs [MONO_MAX_SRC_REGS];
14533
14534                         if (G_UNLIKELY (cfg->verbose_level > 2))
14535                                 mono_print_ins (ins);
14536
14537                         if (ins->opcode == OP_NOP)
14538                                 continue;
14539
14540                         /*
14541                          * We handle LDADDR here as well, since it can only be decomposed
14542                          * when variable addresses are known.
14543                          */
14544                         if (ins->opcode == OP_LDADDR) {
14545                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14546
14547                                 if (var->opcode == OP_VTARG_ADDR) {
14548                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14549                                         MonoInst *vtaddr = var->inst_left;
14550                                         if (vtaddr->opcode == OP_REGVAR) {
14551                                                 ins->opcode = OP_MOVE;
14552                                                 ins->sreg1 = vtaddr->dreg;
14553                                         }
14554                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14555                                                 ins->opcode = OP_LOAD_MEMBASE;
14556                                                 ins->inst_basereg = vtaddr->inst_basereg;
14557                                                 ins->inst_offset = vtaddr->inst_offset;
14558                                         } else
14559                                                 NOT_IMPLEMENTED;
14560                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14561                                         /* gsharedvt arg passed by ref */
14562                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14563
14564                                         ins->opcode = OP_LOAD_MEMBASE;
14565                                         ins->inst_basereg = var->inst_basereg;
14566                                         ins->inst_offset = var->inst_offset;
14567                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14568                                         MonoInst *load, *load2, *load3;
14569                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14570                                         int reg1, reg2, reg3;
14571                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14572                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14573
14574                                         /*
14575                                          * gsharedvt local.
14576                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14577                                          */
14578
14579                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14580
14581                                         g_assert (info_var);
14582                                         g_assert (locals_var);
14583
14584                                         /* Mark the instruction used to compute the locals var as used */
14585                                         cfg->gsharedvt_locals_var_ins = NULL;
14586
14587                                         /* Load the offset */
14588                                         if (info_var->opcode == OP_REGOFFSET) {
14589                                                 reg1 = alloc_ireg (cfg);
14590                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14591                                         } else if (info_var->opcode == OP_REGVAR) {
14592                                                 load = NULL;
14593                                                 reg1 = info_var->dreg;
14594                                         } else {
14595                                                 g_assert_not_reached ();
14596                                         }
14597                                         reg2 = alloc_ireg (cfg);
14598                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14599                                         /* Load the locals area address */
14600                                         reg3 = alloc_ireg (cfg);
14601                                         if (locals_var->opcode == OP_REGOFFSET) {
14602                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14603                                         } else if (locals_var->opcode == OP_REGVAR) {
14604                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14605                                         } else {
14606                                                 g_assert_not_reached ();
14607                                         }
14608                                         /* Compute the address */
14609                                         ins->opcode = OP_PADD;
14610                                         ins->sreg1 = reg3;
14611                                         ins->sreg2 = reg2;
14612
14613                                         mono_bblock_insert_before_ins (bb, ins, load3);
14614                                         mono_bblock_insert_before_ins (bb, load3, load2);
14615                                         if (load)
14616                                                 mono_bblock_insert_before_ins (bb, load2, load);
14617                                 } else {
14618                                         g_assert (var->opcode == OP_REGOFFSET);
14619
14620                                         ins->opcode = OP_ADD_IMM;
14621                                         ins->sreg1 = var->inst_basereg;
14622                                         ins->inst_imm = var->inst_offset;
14623                                 }
14624
14625                                 *need_local_opts = TRUE;
14626                                 spec = INS_INFO (ins->opcode);
14627                         }
14628
14629                         if (ins->opcode < MONO_CEE_LAST) {
14630                                 mono_print_ins (ins);
14631                                 g_assert_not_reached ();
14632                         }
14633
14634                         /*
14635                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14636                          * src register.
14637                          * FIXME:
14638                          */
14639                         if (MONO_IS_STORE_MEMBASE (ins)) {
14640                                 tmp_reg = ins->dreg;
14641                                 ins->dreg = ins->sreg2;
14642                                 ins->sreg2 = tmp_reg;
14643                                 store = TRUE;
14644
14645                                 spec2 [MONO_INST_DEST] = ' ';
14646                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14647                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14648                                 spec2 [MONO_INST_SRC3] = ' ';
14649                                 spec = spec2;
14650                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14651                                 g_assert_not_reached ();
14652                         else
14653                                 store = FALSE;
14654                         no_lvreg = FALSE;
14655
14656                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14657                                 printf ("\t %.3s %d", spec, ins->dreg);
14658                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14659                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14660                                         printf (" %d", sregs [srcindex]);
14661                                 printf ("\n");
14662                         }
14663
14664                         /***************/
14665                         /*    DREG     */
14666                         /***************/
14667                         regtype = spec [MONO_INST_DEST];
14668                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14669                         prev_dreg = -1;
14670
14671                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14672                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14673                                 MonoInst *store_ins;
14674                                 int store_opcode;
14675                                 MonoInst *def_ins = ins;
14676                                 int dreg = ins->dreg; /* The original vreg */
14677
14678                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14679
14680                                 if (var->opcode == OP_REGVAR) {
14681                                         ins->dreg = var->dreg;
14682                                 } 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)) {
14683                                         /*
14684                                          * Instead of emitting a load+store, use a _membase opcode.
14685                                          */
14686                                         g_assert (var->opcode == OP_REGOFFSET);
14687                                         if (ins->opcode == OP_MOVE) {
14688                                                 NULLIFY_INS (ins);
14689                                                 def_ins = NULL;
14690                                         } else {
14691                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14692                                                 ins->inst_basereg = var->inst_basereg;
14693                                                 ins->inst_offset = var->inst_offset;
14694                                                 ins->dreg = -1;
14695                                         }
14696                                         spec = INS_INFO (ins->opcode);
14697                                 } else {
14698                                         guint32 lvreg;
14699
14700                                         g_assert (var->opcode == OP_REGOFFSET);
14701
14702                                         prev_dreg = ins->dreg;
14703
14704                                         /* Invalidate any previous lvreg for this vreg */
14705                                         vreg_to_lvreg [ins->dreg] = 0;
14706
14707                                         lvreg = 0;
14708
14709                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14710                                                 regtype = 'l';
14711                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14712                                         }
14713
14714                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14715
14716 #if SIZEOF_REGISTER != 8
14717                                         if (regtype == 'l') {
14718                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, MONO_LVREG_LS (ins->dreg));
14719                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14720                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, MONO_LVREG_MS (ins->dreg));
14721                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14722                                                 def_ins = store_ins;
14723                                         }
14724                                         else
14725 #endif
14726                                         {
14727                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14728
14729                                                 /* Try to fuse the store into the instruction itself */
14730                                                 /* FIXME: Add more instructions */
14731                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14732                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14733                                                         ins->inst_imm = ins->inst_c0;
14734                                                         ins->inst_destbasereg = var->inst_basereg;
14735                                                         ins->inst_offset = var->inst_offset;
14736                                                         spec = INS_INFO (ins->opcode);
14737                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14738                                                         ins->opcode = store_opcode;
14739                                                         ins->inst_destbasereg = var->inst_basereg;
14740                                                         ins->inst_offset = var->inst_offset;
14741
14742                                                         no_lvreg = TRUE;
14743
14744                                                         tmp_reg = ins->dreg;
14745                                                         ins->dreg = ins->sreg2;
14746                                                         ins->sreg2 = tmp_reg;
14747                                                         store = TRUE;
14748
14749                                                         spec2 [MONO_INST_DEST] = ' ';
14750                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14751                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14752                                                         spec2 [MONO_INST_SRC3] = ' ';
14753                                                         spec = spec2;
14754                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14755                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14756                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14757                                                         ins->dreg = -1;
14758                                                         ins->inst_basereg = var->inst_basereg;
14759                                                         ins->inst_offset = var->inst_offset;
14760                                                         spec = INS_INFO (ins->opcode);
14761                                                 } else {
14762                                                         /* printf ("INS: "); mono_print_ins (ins); */
14763                                                         /* Create a store instruction */
14764                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14765
14766                                                         /* Insert it after the instruction */
14767                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14768
14769                                                         def_ins = store_ins;
14770
14771                                                         /*
14772                                                          * We can't assign ins->dreg to var->dreg here, since the
14773                                                          * sregs could use it. So set a flag, and do it after
14774                                                          * the sregs.
14775                                                          */
14776                                                         if ((!cfg->backend->use_fpstack || ((store_opcode != OP_STORER8_MEMBASE_REG) && (store_opcode != OP_STORER4_MEMBASE_REG))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)))
14777                                                                 dest_has_lvreg = TRUE;
14778                                                 }
14779                                         }
14780                                 }
14781
14782                                 if (def_ins && !live_range_start [dreg]) {
14783                                         live_range_start [dreg] = def_ins;
14784                                         live_range_start_bb [dreg] = bb;
14785                                 }
14786
14787                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14788                                         MonoInst *tmp;
14789
14790                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14791                                         tmp->inst_c1 = dreg;
14792                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14793                                 }
14794                         }
14795
14796                         /************/
14797                         /*  SREGS   */
14798                         /************/
14799                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14800                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14801                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14802                                 sreg = sregs [srcindex];
14803
14804                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14805                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14806                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14807                                         MonoInst *use_ins = ins;
14808                                         MonoInst *load_ins;
14809                                         guint32 load_opcode;
14810
14811                                         if (var->opcode == OP_REGVAR) {
14812                                                 sregs [srcindex] = var->dreg;
14813                                                 //mono_inst_set_src_registers (ins, sregs);
14814                                                 live_range_end [sreg] = use_ins;
14815                                                 live_range_end_bb [sreg] = bb;
14816
14817                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14818                                                         MonoInst *tmp;
14819
14820                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14821                                                         /* var->dreg is a hreg */
14822                                                         tmp->inst_c1 = sreg;
14823                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14824                                                 }
14825
14826                                                 continue;
14827                                         }
14828
14829                                         g_assert (var->opcode == OP_REGOFFSET);
14830
14831                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14832
14833                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14834
14835                                         if (vreg_to_lvreg [sreg]) {
14836                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14837
14838                                                 /* The variable is already loaded to an lvreg */
14839                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14840                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14841                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14842                                                 //mono_inst_set_src_registers (ins, sregs);
14843                                                 continue;
14844                                         }
14845
14846                                         /* Try to fuse the load into the instruction */
14847                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14848                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14849                                                 sregs [0] = var->inst_basereg;
14850                                                 //mono_inst_set_src_registers (ins, sregs);
14851                                                 ins->inst_offset = var->inst_offset;
14852                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14853                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14854                                                 sregs [1] = var->inst_basereg;
14855                                                 //mono_inst_set_src_registers (ins, sregs);
14856                                                 ins->inst_offset = var->inst_offset;
14857                                         } else {
14858                                                 if (MONO_IS_REAL_MOVE (ins)) {
14859                                                         ins->opcode = OP_NOP;
14860                                                         sreg = ins->dreg;
14861                                                 } else {
14862                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14863
14864                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14865
14866                                                         if ((!cfg->backend->use_fpstack || ((load_opcode != OP_LOADR8_MEMBASE) && (load_opcode != OP_LOADR4_MEMBASE))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && !no_lvreg) {
14867                                                                 if (var->dreg == prev_dreg) {
14868                                                                         /*
14869                                                                          * sreg refers to the value loaded by the load
14870                                                                          * emitted below, but we need to use ins->dreg
14871                                                                          * since it refers to the store emitted earlier.
14872                                                                          */
14873                                                                         sreg = ins->dreg;
14874                                                                 }
14875                                                                 g_assert (sreg != -1);
14876                                                                 vreg_to_lvreg [var->dreg] = sreg;
14877                                                                 g_assert (lvregs_len < 1024);
14878                                                                 lvregs [lvregs_len ++] = var->dreg;
14879                                                         }
14880                                                 }
14881
14882                                                 sregs [srcindex] = sreg;
14883                                                 //mono_inst_set_src_registers (ins, sregs);
14884
14885 #if SIZEOF_REGISTER != 8
14886                                                 if (regtype == 'l') {
14887                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14888                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14889                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14890                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14891                                                         use_ins = load_ins;
14892                                                 }
14893                                                 else
14894 #endif
14895                                                 {
14896 #if SIZEOF_REGISTER == 4
14897                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14898 #endif
14899                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14900                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14901                                                         use_ins = load_ins;
14902                                                 }
14903                                         }
14904
14905                                         if (var->dreg < orig_next_vreg) {
14906                                                 live_range_end [var->dreg] = use_ins;
14907                                                 live_range_end_bb [var->dreg] = bb;
14908                                         }
14909
14910                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14911                                                 MonoInst *tmp;
14912
14913                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14914                                                 tmp->inst_c1 = var->dreg;
14915                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14916                                         }
14917                                 }
14918                         }
14919                         mono_inst_set_src_registers (ins, sregs);
14920
14921                         if (dest_has_lvreg) {
14922                                 g_assert (ins->dreg != -1);
14923                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14924                                 g_assert (lvregs_len < 1024);
14925                                 lvregs [lvregs_len ++] = prev_dreg;
14926                                 dest_has_lvreg = FALSE;
14927                         }
14928
14929                         if (store) {
14930                                 tmp_reg = ins->dreg;
14931                                 ins->dreg = ins->sreg2;
14932                                 ins->sreg2 = tmp_reg;
14933                         }
14934
14935                         if (MONO_IS_CALL (ins)) {
14936                                 /* Clear vreg_to_lvreg array */
14937                                 for (i = 0; i < lvregs_len; i++)
14938                                         vreg_to_lvreg [lvregs [i]] = 0;
14939                                 lvregs_len = 0;
14940                         } else if (ins->opcode == OP_NOP) {
14941                                 ins->dreg = -1;
14942                                 MONO_INST_NULLIFY_SREGS (ins);
14943                         }
14944
14945                         if (cfg->verbose_level > 2)
14946                                 mono_print_ins_index (1, ins);
14947                 }
14948
14949                 /* Extend the live range based on the liveness info */
14950                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14951                         for (i = 0; i < cfg->num_varinfo; i ++) {
14952                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14953
14954                                 if (vreg_is_volatile (cfg, vi->vreg))
14955                                         /* The liveness info is incomplete */
14956                                         continue;
14957
14958                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14959                                         /* Live from at least the first ins of this bb */
14960                                         live_range_start [vi->vreg] = bb->code;
14961                                         live_range_start_bb [vi->vreg] = bb;
14962                                 }
14963
14964                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14965                                         /* Live at least until the last ins of this bb */
14966                                         live_range_end [vi->vreg] = bb->last_ins;
14967                                         live_range_end_bb [vi->vreg] = bb;
14968                                 }
14969                         }
14970                 }
14971         }
14972
14973         /*
14974          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14975          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14976          */
14977         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14978                 for (i = 0; i < cfg->num_varinfo; ++i) {
14979                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14980                         MonoInst *ins;
14981
14982                         if (live_range_start [vreg]) {
14983                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14984                                 ins->inst_c0 = i;
14985                                 ins->inst_c1 = vreg;
14986                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14987                         }
14988                         if (live_range_end [vreg]) {
14989                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14990                                 ins->inst_c0 = i;
14991                                 ins->inst_c1 = vreg;
14992                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14993                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14994                                 else
14995                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14996                         }
14997                 }
14998         }
14999
15000         if (cfg->gsharedvt_locals_var_ins) {
15001                 /* Nullify if unused */
15002                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15003                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15004         }
15005
15006         g_free (live_range_start);
15007         g_free (live_range_end);
15008         g_free (live_range_start_bb);
15009         g_free (live_range_end_bb);
15010 }
15011
15012 /**
15013  * FIXME:
15014  * - use 'iadd' instead of 'int_add'
15015  * - handling ovf opcodes: decompose in method_to_ir.
15016  * - unify iregs/fregs
15017  *   -> partly done, the missing parts are:
15018  *   - a more complete unification would involve unifying the hregs as well, so
15019  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15020  *     would no longer map to the machine hregs, so the code generators would need to
15021  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15022  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15023  *     fp/non-fp branches speeds it up by about 15%.
15024  * - use sext/zext opcodes instead of shifts
15025  * - add OP_ICALL
15026  * - get rid of TEMPLOADs if possible and use vregs instead
15027  * - clean up usage of OP_P/OP_ opcodes
15028  * - cleanup usage of DUMMY_USE
15029  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15030  *   stack
15031  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15032  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15033  * - make sure handle_stack_args () is called before the branch is emitted
15034  * - when the new IR is done, get rid of all unused stuff
15035  * - COMPARE/BEQ as separate instructions or unify them ?
15036  *   - keeping them separate allows specialized compare instructions like
15037  *     compare_imm, compare_membase
15038  *   - most back ends unify fp compare+branch, fp compare+ceq
15039  * - integrate mono_save_args into inline_method
15040  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15041  * - handle long shift opts on 32 bit platforms somehow: they require
15042  *   3 sregs (2 for arg1 and 1 for arg2)
15043  * - make byref a 'normal' type.
15044  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15045  *   variable if needed.
15046  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15047  *   like inline_method.
15048  * - remove inlining restrictions
15049  * - fix LNEG and enable cfold of INEG
15050  * - generalize x86 optimizations like ldelema as a peephole optimization
15051  * - add store_mem_imm for amd64
15052  * - optimize the loading of the interruption flag in the managed->native wrappers
15053  * - avoid special handling of OP_NOP in passes
15054  * - move code inserting instructions into one function/macro.
15055  * - try a coalescing phase after liveness analysis
15056  * - add float -> vreg conversion + local optimizations on !x86
15057  * - figure out how to handle decomposed branches during optimizations, ie.
15058  *   compare+branch, op_jump_table+op_br etc.
15059  * - promote RuntimeXHandles to vregs
15060  * - vtype cleanups:
15061  *   - add a NEW_VARLOADA_VREG macro
15062  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15063  *   accessing vtype fields.
15064  * - get rid of I8CONST on 64 bit platforms
15065  * - dealing with the increase in code size due to branches created during opcode
15066  *   decomposition:
15067  *   - use extended basic blocks
15068  *     - all parts of the JIT
15069  *     - handle_global_vregs () && local regalloc
15070  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15071  * - sources of increase in code size:
15072  *   - vtypes
15073  *   - long compares
15074  *   - isinst and castclass
15075  *   - lvregs not allocated to global registers even if used multiple times
15076  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15077  *   meaningful.
15078  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15079  * - add all micro optimizations from the old JIT
15080  * - put tree optimizations into the deadce pass
15081  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15082  *   specific function.
15083  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15084  *   fcompare + branchCC.
15085  * - create a helper function for allocating a stack slot, taking into account
15086  *   MONO_CFG_HAS_SPILLUP.
15087  * - merge r68207.
15088  * - merge the ia64 switch changes.
15089  * - optimize mono_regstate2_alloc_int/float.
15090  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15091  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15092  *   parts of the tree could be separated by other instructions, killing the tree
15093  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15094  *   instructions if the result of the load is used multiple times ?
15095  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15096  * - LAST MERGE: 108395.
15097  * - when returning vtypes in registers, generate IR and append it to the end of the
15098  *   last bb instead of doing it in the epilog.
15099  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15100  */
15101
15102 /*
15103
15104 NOTES
15105 -----
15106
15107 - When to decompose opcodes:
15108   - earlier: this makes some optimizations hard to implement, since the low level IR
15109   no longer contains the neccessary information. But it is easier to do.
15110   - later: harder to implement, enables more optimizations.
15111 - Branches inside bblocks:
15112   - created when decomposing complex opcodes.
15113     - branches to another bblock: harmless, but not tracked by the branch
15114       optimizations, so need to branch to a label at the start of the bblock.
15115     - branches to inside the same bblock: very problematic, trips up the local
15116       reg allocator. Can be fixed by spitting the current bblock, but that is a
15117       complex operation, since some local vregs can become global vregs etc.
15118 - Local/global vregs:
15119   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15120     local register allocator.
15121   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15122     structure, created by mono_create_var (). Assigned to hregs or the stack by
15123     the global register allocator.
15124 - When to do optimizations like alu->alu_imm:
15125   - earlier -> saves work later on since the IR will be smaller/simpler
15126   - later -> can work on more instructions
15127 - Handling of valuetypes:
15128   - When a vtype is pushed on the stack, a new temporary is created, an
15129     instruction computing its address (LDADDR) is emitted and pushed on
15130     the stack. Need to optimize cases when the vtype is used immediately as in
15131     argument passing, stloc etc.
15132 - Instead of the to_end stuff in the old JIT, simply call the function handling
15133   the values on the stack before emitting the last instruction of the bb.
15134 */
15135
15136 #endif /* DISABLE_JIT */