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/debug-mono-symfile.h>
  60 #include <mono/utils/mono-compiler.h>
  61 #include <mono/utils/mono-memory-model.h>
  62 #include <mono/metadata/mono-basic-block.h>
  63
  64 #include "trace.h"
  65
  66 #include "ir-emit.h"
  67
  68 #include "jit-icalls.h"
  69 #include "jit.h"
  70 #include "debugger-agent.h"
  71 #include "seq-points.h"
  72 #include "aot-compiler.h"
  73 #include "mini-llvm.h"
  74
  75 #define BRANCH_COST 10
  76 #define INLINE_LENGTH_LIMIT 20
  77
  78 /* These have 'cfg' as an implicit argument */
  79 #define INLINE_FAILURE(msg) do {                                                                        \
  80         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  81                 inline_failure (cfg, msg);                                                                              \
  82                 goto exception_exit;                                                                                    \
  83         } \
  84         } while (0)
  85 #define CHECK_CFG_EXCEPTION do {\
  86                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  87                         goto exception_exit;                                            \
  88         } while (0)
  89 #define METHOD_ACCESS_FAILURE(method, cmethod) do {                     \
  90                 method_access_failure ((cfg), (method), (cmethod));                     \
  91                 goto exception_exit;                                                                            \
  92         } while (0)
  93 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  94                 field_access_failure ((cfg), (method), (field));                        \
  95                 goto exception_exit;    \
  96         } while (0)
  97 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  98                 if (cfg->gshared) {                                                                     \
  99                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 100                         goto exception_exit;    \
 101                 }                       \
 102         } while (0)
 103 #define GSHAREDVT_FAILURE(opcode) do {          \
 104         if (cfg->gsharedvt) {                                                                                           \
 105                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 106                 goto exception_exit;                                                                                    \
 107         }                                                                                                                                       \
 108         } while (0)
 109 #define OUT_OF_MEMORY_FAILURE do {      \
 110                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_OUT_OF_MEMORY);             \
 111                 goto exception_exit;    \
 112         } while (0)
 113 #define DISABLE_AOT(cfg) do { \
 114                 if ((cfg)->verbose_level >= 2)                                            \
 115                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 116                 (cfg)->disable_aot = TRUE;                                                        \
 117         } while (0)
 118 #define LOAD_ERROR do { \
 119                 break_on_unverified ();                                                         \
 120                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 121                 goto exception_exit;                                                                    \
 122         } while (0)
 123
 124 #define TYPE_LOAD_ERROR(klass) do { \
 125                 cfg->exception_ptr = klass; \
 126                 LOAD_ERROR;                                     \
 127         } while (0)
 128
 129 #define CHECK_CFG_ERROR do {\
 130                 if (!mono_error_ok (&cfg->error)) { \
 131                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 132                         goto mono_error_exit; \
 133                 } \
 134         } while (0)
 135
 136 /* Determine whenever 'ins' represents a load of the 'this' argument */
 137 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 138
 139 static int ldind_to_load_membase (int opcode);
 140 static int stind_to_store_membase (int opcode);
 141
 142 int mono_op_to_op_imm (int opcode);
 143 int mono_op_to_op_imm_noemul (int opcode);
 144
 145 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 146
 147 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 148                                                   guchar *ip, guint real_offset, gboolean inline_always);
 149
 150 /* helper methods signatures */
 151 static MonoMethodSignature *helper_sig_domain_get;
 152 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 153
 154 /*
 155  * Instruction metadata
 156  */
 157 #ifdef MINI_OP
 158 #undef MINI_OP
 159 #endif
 160 #ifdef MINI_OP3
 161 #undef MINI_OP3
 162 #endif
 163 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 164 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 165 #define NONE ' '
 166 #define IREG 'i'
 167 #define FREG 'f'
 168 #define VREG 'v'
 169 #define XREG 'x'
 170 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 171 #define LREG IREG
 172 #else
 173 #define LREG 'l'
 174 #endif
 175 /* keep in sync with the enum in mini.h */
 176 const char
 177 ins_info[] = {
 178 #include "mini-ops.h"
 179 };
 180 #undef MINI_OP
 181 #undef MINI_OP3
 182
 183 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 184 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 185 /*
 186  * This should contain the index of the last sreg + 1. This is not the same
 187  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 188  */
 189 const gint8 ins_sreg_counts[] = {
 190 #include "mini-ops.h"
 191 };
 192 #undef MINI_OP
 193 #undef MINI_OP3
 194
 195 #define MONO_INIT_VARINFO(vi,id) do { \
 196         (vi)->range.first_use.pos.bid = 0xffff; \
 197         (vi)->reg = -1; \
 198         (vi)->idx = (id); \
 199 } while (0)
 200
 201 guint32
 202 mono_alloc_ireg (MonoCompile *cfg)
 203 {
 204         return alloc_ireg (cfg);
 205 }
 206
 207 guint32
 208 mono_alloc_lreg (MonoCompile *cfg)
 209 {
 210         return alloc_lreg (cfg);
 211 }
 212
 213 guint32
 214 mono_alloc_freg (MonoCompile *cfg)
 215 {
 216         return alloc_freg (cfg);
 217 }
 218
 219 guint32
 220 mono_alloc_preg (MonoCompile *cfg)
 221 {
 222         return alloc_preg (cfg);
 223 }
 224
 225 guint32
 226 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 227 {
 228         return alloc_dreg (cfg, stack_type);
 229 }
 230
 231 /*
 232  * mono_alloc_ireg_ref:
 233  *
 234  *   Allocate an IREG, and mark it as holding a GC ref.
 235  */
 236 guint32
 237 mono_alloc_ireg_ref (MonoCompile *cfg)
 238 {
 239         return alloc_ireg_ref (cfg);
 240 }
 241
 242 /*
 243  * mono_alloc_ireg_mp:
 244  *
 245  *   Allocate an IREG, and mark it as holding a managed pointer.
 246  */
 247 guint32
 248 mono_alloc_ireg_mp (MonoCompile *cfg)
 249 {
 250         return alloc_ireg_mp (cfg);
 251 }
 252
 253 /*
 254  * mono_alloc_ireg_copy:
 255  *
 256  *   Allocate an IREG with the same GC type as VREG.
 257  */
 258 guint32
 259 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 260 {
 261         if (vreg_is_ref (cfg, vreg))
 262                 return alloc_ireg_ref (cfg);
 263         else if (vreg_is_mp (cfg, vreg))
 264                 return alloc_ireg_mp (cfg);
 265         else
 266                 return alloc_ireg (cfg);
 267 }
 268
 269 guint
 270 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 271 {
 272         if (type->byref)
 273                 return OP_MOVE;
 274
 275         type = mini_get_underlying_type (type);
 276 handle_enum:
 277         switch (type->type) {
 278         case MONO_TYPE_I1:
 279         case MONO_TYPE_U1:
 280                 return OP_MOVE;
 281         case MONO_TYPE_I2:
 282         case MONO_TYPE_U2:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I4:
 285         case MONO_TYPE_U4:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I:
 288         case MONO_TYPE_U:
 289         case MONO_TYPE_PTR:
 290         case MONO_TYPE_FNPTR:
 291                 return OP_MOVE;
 292         case MONO_TYPE_CLASS:
 293         case MONO_TYPE_STRING:
 294         case MONO_TYPE_OBJECT:
 295         case MONO_TYPE_SZARRAY:
 296         case MONO_TYPE_ARRAY:
 297                 return OP_MOVE;
 298         case MONO_TYPE_I8:
 299         case MONO_TYPE_U8:
 300 #if SIZEOF_REGISTER == 8
 301                 return OP_MOVE;
 302 #else
 303                 return OP_LMOVE;
 304 #endif
 305         case MONO_TYPE_R4:
 306                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 307         case MONO_TYPE_R8:
 308                 return OP_FMOVE;
 309         case MONO_TYPE_VALUETYPE:
 310                 if (type->data.klass->enumtype) {
 311                         type = mono_class_enum_basetype (type->data.klass);
 312                         goto handle_enum;
 313                 }
 314                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 315                         return OP_XMOVE;
 316                 return OP_VMOVE;
 317         case MONO_TYPE_TYPEDBYREF:
 318                 return OP_VMOVE;
 319         case MONO_TYPE_GENERICINST:
 320                 type = &type->data.generic_class->container_class->byval_arg;
 321                 goto handle_enum;
 322         case MONO_TYPE_VAR:
 323         case MONO_TYPE_MVAR:
 324                 g_assert (cfg->gshared);
 325                 if (mini_type_var_is_vt (type))
 326                         return OP_VMOVE;
 327                 else
 328                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 329         default:
 330                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 331         }
 332         return -1;
 333 }
 334
 335 void
 336 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 337 {
 338         int i;
 339         MonoInst *tree;
 340
 341         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 342         for (i = 0; i < bb->in_count; ++i)
 343                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 344         printf (", OUT: ");
 345         for (i = 0; i < bb->out_count; ++i)
 346                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 347         printf (" ]\n");
 348         for (tree = bb->code; tree; tree = tree->next)
 349                 mono_print_ins_index (-1, tree);
 350 }
 351
 352 void
 353 mono_create_helper_signatures (void)
 354 {
 355         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 356         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 357 }
 358
 359 static MONO_NEVER_INLINE void
 360 break_on_unverified (void)
 361 {
 362         if (mini_get_debug_options ()->break_on_unverified)
 363                 G_BREAKPOINT ();
 364 }
 365
 366 static MONO_NEVER_INLINE void
 367 method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
 368 {
 369         char *method_fname = mono_method_full_name (method, TRUE);
 370         char *cil_method_fname = mono_method_full_name (cil_method, TRUE);
 371         mono_cfg_set_exception (cfg, MONO_EXCEPTION_METHOD_ACCESS);
 372         cfg->exception_message = g_strdup_printf ("Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname);
 373         g_free (method_fname);
 374         g_free (cil_method_fname);
 375 }
 376
 377 static MONO_NEVER_INLINE void
 378 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 379 {
 380         char *method_fname = mono_method_full_name (method, TRUE);
 381         char *field_fname = mono_field_full_name (field);
 382         mono_cfg_set_exception (cfg, MONO_EXCEPTION_FIELD_ACCESS);
 383         cfg->exception_message = g_strdup_printf ("Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 384         g_free (method_fname);
 385         g_free (field_fname);
 386 }
 387
 388 static MONO_NEVER_INLINE void
 389 inline_failure (MonoCompile *cfg, const char *msg)
 390 {
 391         if (cfg->verbose_level >= 2)
 392                 printf ("inline failed: %s\n", msg);
 393         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 394 }
 395
 396 static MONO_NEVER_INLINE void
 397 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 398 {
 399         if (cfg->verbose_level > 2)                                                                                     \
 400                 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);
 401         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 402 }
 403
 404 static MONO_NEVER_INLINE void
 405 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 406 {
 407         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);
 408         if (cfg->verbose_level >= 2)
 409                 printf ("%s\n", cfg->exception_message);
 410         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 411 }
 412
 413 /*
 414  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 415  * foo<T> (int i) { ldarg.0; box T; }
 416  */
 417 #define UNVERIFIED do { \
 418         if (cfg->gsharedvt) { \
 419                 if (cfg->verbose_level > 2)                                                                     \
 420                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 421                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 422                 goto exception_exit;                                                                                    \
 423         }                                                                                                                                       \
 424         break_on_unverified ();                                                                                         \
 425         goto unverified;                                                                                                        \
 426 } while (0)
 427
 428 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 429                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 430                 if (!(tblock)) {        \
 431                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 432             NEW_BBLOCK (cfg, (tblock)); \
 433                         (tblock)->cil_code = (ip);      \
 434                         ADD_BBLOCK (cfg, (tblock));     \
 435                 } \
 436         } while (0)
 437
 438 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 439 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 440                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 441                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 442                 (dest)->sreg1 = (sr1); \
 443                 (dest)->sreg2 = (sr2); \
 444                 (dest)->inst_imm = (imm); \
 445                 (dest)->backend.shift_amount = (shift); \
 446                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 447         } while (0)
 448 #endif
 449
 450 /* Emit conversions so both operands of a binary opcode are of the same type */
 451 static void
 452 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 453 {
 454         MonoInst *arg1 = *arg1_ref;
 455         MonoInst *arg2 = *arg2_ref;
 456
 457         if (cfg->r4fp &&
 458                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 459                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 460                 MonoInst *conv;
 461
 462                 /* Mixing r4/r8 is allowed by the spec */
 463                 if (arg1->type == STACK_R4) {
 464                         int dreg = alloc_freg (cfg);
 465
 466                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 467                         conv->type = STACK_R8;
 468                         ins->sreg1 = dreg;
 469                         *arg1_ref = conv;
 470                 }
 471                 if (arg2->type == STACK_R4) {
 472                         int dreg = alloc_freg (cfg);
 473
 474                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 475                         conv->type = STACK_R8;
 476                         ins->sreg2 = dreg;
 477                         *arg2_ref = conv;
 478                 }
 479         }
 480
 481 #if SIZEOF_REGISTER == 8
 482         /* FIXME: Need to add many more cases */
 483         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 484                 MonoInst *widen;
 485
 486                 int dr = alloc_preg (cfg);
 487                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 488                 (ins)->sreg2 = widen->dreg;
 489         }
 490 #endif
 491 }
 492
 493 #define ADD_BINOP(op) do {      \
 494                 MONO_INST_NEW (cfg, ins, (op)); \
 495                 sp -= 2;        \
 496                 ins->sreg1 = sp [0]->dreg;      \
 497                 ins->sreg2 = sp [1]->dreg;      \
 498                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 499                 CHECK_TYPE (ins);       \
 500                 /* Have to insert a widening op */               \
 501         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 502         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 503         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 504         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 505         } while (0)
 506
 507 #define ADD_UNOP(op) do {       \
 508                 MONO_INST_NEW (cfg, ins, (op)); \
 509                 sp--;   \
 510                 ins->sreg1 = sp [0]->dreg;      \
 511                 type_from_op (cfg, ins, sp [0], NULL);  \
 512                 CHECK_TYPE (ins);       \
 513         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 514         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 515                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 516         } while (0)
 517
 518 #define ADD_BINCOND(next_block) do {    \
 519                 MonoInst *cmp;  \
 520                 sp -= 2; \
 521                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 522                 cmp->sreg1 = sp [0]->dreg;      \
 523                 cmp->sreg2 = sp [1]->dreg;      \
 524                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 525                 CHECK_TYPE (cmp);       \
 526                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 527                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 528                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 529                 GET_BBLOCK (cfg, tblock, target);               \
 530                 link_bblock (cfg, cfg->cbb, tblock);    \
 531                 ins->inst_true_bb = tblock;     \
 532                 if ((next_block)) {     \
 533                         link_bblock (cfg, cfg->cbb, (next_block));      \
 534                         ins->inst_false_bb = (next_block);      \
 535                         start_new_bblock = 1;   \
 536                 } else {        \
 537                         GET_BBLOCK (cfg, tblock, ip);           \
 538                         link_bblock (cfg, cfg->cbb, tblock);    \
 539                         ins->inst_false_bb = tblock;    \
 540                         start_new_bblock = 2;   \
 541                 }       \
 542                 if (sp != stack_start) {                                                                        \
 543                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 544                         CHECK_UNVERIFIABLE (cfg); \
 545                 } \
 546         MONO_ADD_INS (cfg->cbb, cmp); \
 547                 MONO_ADD_INS (cfg->cbb, ins);   \
 548         } while (0)
 549
 550 /* *
 551  * link_bblock: Links two basic blocks
 552  *
 553  * links two basic blocks in the control flow graph, the 'from'
 554  * argument is the starting block and the 'to' argument is the block
 555  * the control flow ends to after 'from'.
 556  */
 557 static void
 558 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 559 {
 560         MonoBasicBlock **newa;
 561         int i, found;
 562
 563 #if 0
 564         if (from->cil_code) {
 565                 if (to->cil_code)
 566                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 567                 else
 568                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 569         } else {
 570                 if (to->cil_code)
 571                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 572                 else
 573                         printf ("edge from entry to exit\n");
 574         }
 575 #endif
 576
 577         found = FALSE;
 578         for (i = 0; i < from->out_count; ++i) {
 579                 if (to == from->out_bb [i]) {
 580                         found = TRUE;
 581                         break;
 582                 }
 583         }
 584         if (!found) {
 585                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 586                 for (i = 0; i < from->out_count; ++i) {
 587                         newa [i] = from->out_bb [i];
 588                 }
 589                 newa [i] = to;
 590                 from->out_count++;
 591                 from->out_bb = newa;
 592         }
 593
 594         found = FALSE;
 595         for (i = 0; i < to->in_count; ++i) {
 596                 if (from == to->in_bb [i]) {
 597                         found = TRUE;
 598                         break;
 599                 }
 600         }
 601         if (!found) {
 602                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 603                 for (i = 0; i < to->in_count; ++i) {
 604                         newa [i] = to->in_bb [i];
 605                 }
 606                 newa [i] = from;
 607                 to->in_count++;
 608                 to->in_bb = newa;
 609         }
 610 }
 611
 612 void
 613 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 614 {
 615         link_bblock (cfg, from, to);
 616 }
 617
 618 /**
 619  * mono_find_block_region:
 620  *
 621  *   We mark each basic block with a region ID. We use that to avoid BB
 622  *   optimizations when blocks are in different regions.
 623  *
 624  * Returns:
 625  *   A region token that encodes where this region is, and information
 626  *   about the clause owner for this block.
 627  *
 628  *   The region encodes the try/catch/filter clause that owns this block
 629  *   as well as the type.  -1 is a special value that represents a block
 630  *   that is in none of try/catch/filter.
 631  */
 632 static int
 633 mono_find_block_region (MonoCompile *cfg, int offset)
 634 {
 635         MonoMethodHeader *header = cfg->header;
 636         MonoExceptionClause *clause;
 637         int i;
 638
 639         for (i = 0; i < header->num_clauses; ++i) {
 640                 clause = &header->clauses [i];
 641                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 642                     (offset < (clause->handler_offset)))
 643                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 644
 645                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 646                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 647                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 648                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 649                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 650                         else
 651                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 652                 }
 653         }
 654         for (i = 0; i < header->num_clauses; ++i) {
 655                 clause = &header->clauses [i];
 656
 657                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 658                         return ((i + 1) << 8) | clause->flags;
 659         }
 660
 661         return -1;
 662 }
 663
 664 static GList*
 665 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 666 {
 667         MonoMethodHeader *header = cfg->header;
 668         MonoExceptionClause *clause;
 669         int i;
 670         GList *res = NULL;
 671
 672         for (i = 0; i < header->num_clauses; ++i) {
 673                 clause = &header->clauses [i];
 674                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 675                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 676                         if (clause->flags == type)
 677                                 res = g_list_append (res, clause);
 678                 }
 679         }
 680         return res;
 681 }
 682
 683 static void
 684 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 685 {
 686         MonoInst *var;
 687
 688         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 689         if (var)
 690                 return;
 691
 692         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 693         /* prevent it from being register allocated */
 694         var->flags |= MONO_INST_VOLATILE;
 695
 696         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 697 }
 698
 699 MonoInst *
 700 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 701 {
 702         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 703 }
 704
 705 static MonoInst*
 706 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 707 {
 708         MonoInst *var;
 709
 710         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 711         if (var)
 712                 return var;
 713
 714         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 715         /* prevent it from being register allocated */
 716         var->flags |= MONO_INST_VOLATILE;
 717
 718         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 719
 720         return var;
 721 }
 722
 723 /*
 724  * Returns the type used in the eval stack when @type is loaded.
 725  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 726  */
 727 void
 728 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 729 {
 730         MonoClass *klass;
 731
 732         type = mini_get_underlying_type (type);
 733         inst->klass = klass = mono_class_from_mono_type (type);
 734         if (type->byref) {
 735                 inst->type = STACK_MP;
 736                 return;
 737         }
 738
 739 handle_enum:
 740         switch (type->type) {
 741         case MONO_TYPE_VOID:
 742                 inst->type = STACK_INV;
 743                 return;
 744         case MONO_TYPE_I1:
 745         case MONO_TYPE_U1:
 746         case MONO_TYPE_I2:
 747         case MONO_TYPE_U2:
 748         case MONO_TYPE_I4:
 749         case MONO_TYPE_U4:
 750                 inst->type = STACK_I4;
 751                 return;
 752         case MONO_TYPE_I:
 753         case MONO_TYPE_U:
 754         case MONO_TYPE_PTR:
 755         case MONO_TYPE_FNPTR:
 756                 inst->type = STACK_PTR;
 757                 return;
 758         case MONO_TYPE_CLASS:
 759         case MONO_TYPE_STRING:
 760         case MONO_TYPE_OBJECT:
 761         case MONO_TYPE_SZARRAY:
 762         case MONO_TYPE_ARRAY:
 763                 inst->type = STACK_OBJ;
 764                 return;
 765         case MONO_TYPE_I8:
 766         case MONO_TYPE_U8:
 767                 inst->type = STACK_I8;
 768                 return;
 769         case MONO_TYPE_R4:
 770                 inst->type = cfg->r4_stack_type;
 771                 break;
 772         case MONO_TYPE_R8:
 773                 inst->type = STACK_R8;
 774                 return;
 775         case MONO_TYPE_VALUETYPE:
 776                 if (type->data.klass->enumtype) {
 777                         type = mono_class_enum_basetype (type->data.klass);
 778                         goto handle_enum;
 779                 } else {
 780                         inst->klass = klass;
 781                         inst->type = STACK_VTYPE;
 782                         return;
 783                 }
 784         case MONO_TYPE_TYPEDBYREF:
 785                 inst->klass = mono_defaults.typed_reference_class;
 786                 inst->type = STACK_VTYPE;
 787                 return;
 788         case MONO_TYPE_GENERICINST:
 789                 type = &type->data.generic_class->container_class->byval_arg;
 790                 goto handle_enum;
 791         case MONO_TYPE_VAR:
 792         case MONO_TYPE_MVAR:
 793                 g_assert (cfg->gshared);
 794                 if (mini_is_gsharedvt_type (type)) {
 795                         g_assert (cfg->gsharedvt);
 796                         inst->type = STACK_VTYPE;
 797                 } else {
 798                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 799                 }
 800                 return;
 801         default:
 802                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 803         }
 804 }
 805
 806 /*
 807  * The following tables are used to quickly validate the IL code in type_from_op ().
 808  */
 809 static const char
 810 bin_num_table [STACK_MAX] [STACK_MAX] = {
 811         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 812         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 813         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 814         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 815         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 816         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 817         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 818         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 819         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 820 };
 821
 822 static const char
 823 neg_table [] = {
 824         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 825 };
 826
 827 /* reduce the size of this table */
 828 static const char
 829 bin_int_table [STACK_MAX] [STACK_MAX] = {
 830         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 831         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 832         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 837         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 838 };
 839
 840 static const char
 841 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 842 /*      Inv i  L  p  F  &  O  vt r4 */
 843         {0},
 844         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 845         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 846         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 847         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 848         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 849         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 850         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 851         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 852 };
 853
 854 /* reduce the size of this table */
 855 static const char
 856 shift_table [STACK_MAX] [STACK_MAX] = {
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 859         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 860         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 861         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 862         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 863         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 864         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 865 };
 866
 867 /*
 868  * Tables to map from the non-specific opcode to the matching
 869  * type-specific opcode.
 870  */
 871 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 872 static const guint16
 873 binops_op_map [STACK_MAX] = {
 874         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
 875 };
 876
 877 /* handles from CEE_NEG to CEE_CONV_U8 */
 878 static const guint16
 879 unops_op_map [STACK_MAX] = {
 880         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
 881 };
 882
 883 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 884 static const guint16
 885 ovfops_op_map [STACK_MAX] = {
 886         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
 887 };
 888
 889 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 890 static const guint16
 891 ovf2ops_op_map [STACK_MAX] = {
 892         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
 893 };
 894
 895 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 896 static const guint16
 897 ovf3ops_op_map [STACK_MAX] = {
 898         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
 899 };
 900
 901 /* handles from CEE_BEQ to CEE_BLT_UN */
 902 static const guint16
 903 beqops_op_map [STACK_MAX] = {
 904         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
 905 };
 906
 907 /* handles from CEE_CEQ to CEE_CLT_UN */
 908 static const guint16
 909 ceqops_op_map [STACK_MAX] = {
 910         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
 911 };
 912
 913 /*
 914  * Sets ins->type (the type on the eval stack) according to the
 915  * type of the opcode and the arguments to it.
 916  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 917  *
 918  * FIXME: this function sets ins->type unconditionally in some cases, but
 919  * it should set it to invalid for some types (a conv.x on an object)
 920  */
 921 static void
 922 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 923 {
 924         switch (ins->opcode) {
 925         /* binops */
 926         case CEE_ADD:
 927         case CEE_SUB:
 928         case CEE_MUL:
 929         case CEE_DIV:
 930         case CEE_REM:
 931                 /* FIXME: check unverifiable args for STACK_MP */
 932                 ins->type = bin_num_table [src1->type] [src2->type];
 933                 ins->opcode += binops_op_map [ins->type];
 934                 break;
 935         case CEE_DIV_UN:
 936         case CEE_REM_UN:
 937         case CEE_AND:
 938         case CEE_OR:
 939         case CEE_XOR:
 940                 ins->type = bin_int_table [src1->type] [src2->type];
 941                 ins->opcode += binops_op_map [ins->type];
 942                 break;
 943         case CEE_SHL:
 944         case CEE_SHR:
 945         case CEE_SHR_UN:
 946                 ins->type = shift_table [src1->type] [src2->type];
 947                 ins->opcode += binops_op_map [ins->type];
 948                 break;
 949         case OP_COMPARE:
 950         case OP_LCOMPARE:
 951         case OP_ICOMPARE:
 952                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 953                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 954                         ins->opcode = OP_LCOMPARE;
 955                 else if (src1->type == STACK_R4)
 956                         ins->opcode = OP_RCOMPARE;
 957                 else if (src1->type == STACK_R8)
 958                         ins->opcode = OP_FCOMPARE;
 959                 else
 960                         ins->opcode = OP_ICOMPARE;
 961                 break;
 962         case OP_ICOMPARE_IMM:
 963                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 964                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 965                         ins->opcode = OP_LCOMPARE_IMM;
 966                 break;
 967         case CEE_BEQ:
 968         case CEE_BGE:
 969         case CEE_BGT:
 970         case CEE_BLE:
 971         case CEE_BLT:
 972         case CEE_BNE_UN:
 973         case CEE_BGE_UN:
 974         case CEE_BGT_UN:
 975         case CEE_BLE_UN:
 976         case CEE_BLT_UN:
 977                 ins->opcode += beqops_op_map [src1->type];
 978                 break;
 979         case OP_CEQ:
 980                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 981                 ins->opcode += ceqops_op_map [src1->type];
 982                 break;
 983         case OP_CGT:
 984         case OP_CGT_UN:
 985         case OP_CLT:
 986         case OP_CLT_UN:
 987                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
 988                 ins->opcode += ceqops_op_map [src1->type];
 989                 break;
 990         /* unops */
 991         case CEE_NEG:
 992                 ins->type = neg_table [src1->type];
 993                 ins->opcode += unops_op_map [ins->type];
 994                 break;
 995         case CEE_NOT:
 996                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
 997                         ins->type = src1->type;
 998                 else
 999                         ins->type = STACK_INV;
1000                 ins->opcode += unops_op_map [ins->type];
1001                 break;
1002         case CEE_CONV_I1:
1003         case CEE_CONV_I2:
1004         case CEE_CONV_I4:
1005         case CEE_CONV_U4:
1006                 ins->type = STACK_I4;
1007                 ins->opcode += unops_op_map [src1->type];
1008                 break;
1009         case CEE_CONV_R_UN:
1010                 ins->type = STACK_R8;
1011                 switch (src1->type) {
1012                 case STACK_I4:
1013                 case STACK_PTR:
1014                         ins->opcode = OP_ICONV_TO_R_UN;
1015                         break;
1016                 case STACK_I8:
1017                         ins->opcode = OP_LCONV_TO_R_UN;
1018                         break;
1019                 }
1020                 break;
1021         case CEE_CONV_OVF_I1:
1022         case CEE_CONV_OVF_U1:
1023         case CEE_CONV_OVF_I2:
1024         case CEE_CONV_OVF_U2:
1025         case CEE_CONV_OVF_I4:
1026         case CEE_CONV_OVF_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += ovf3ops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_OVF_I_UN:
1031         case CEE_CONV_OVF_U_UN:
1032                 ins->type = STACK_PTR;
1033                 ins->opcode += ovf2ops_op_map [src1->type];
1034                 break;
1035         case CEE_CONV_OVF_I1_UN:
1036         case CEE_CONV_OVF_I2_UN:
1037         case CEE_CONV_OVF_I4_UN:
1038         case CEE_CONV_OVF_U1_UN:
1039         case CEE_CONV_OVF_U2_UN:
1040         case CEE_CONV_OVF_U4_UN:
1041                 ins->type = STACK_I4;
1042                 ins->opcode += ovf2ops_op_map [src1->type];
1043                 break;
1044         case CEE_CONV_U:
1045                 ins->type = STACK_PTR;
1046                 switch (src1->type) {
1047                 case STACK_I4:
1048                         ins->opcode = OP_ICONV_TO_U;
1049                         break;
1050                 case STACK_PTR:
1051                 case STACK_MP:
1052 #if SIZEOF_VOID_P == 8
1053                         ins->opcode = OP_LCONV_TO_U;
1054 #else
1055                         ins->opcode = OP_MOVE;
1056 #endif
1057                         break;
1058                 case STACK_I8:
1059                         ins->opcode = OP_LCONV_TO_U;
1060                         break;
1061                 case STACK_R8:
1062                         ins->opcode = OP_FCONV_TO_U;
1063                         break;
1064                 }
1065                 break;
1066         case CEE_CONV_I8:
1067         case CEE_CONV_U8:
1068                 ins->type = STACK_I8;
1069                 ins->opcode += unops_op_map [src1->type];
1070                 break;
1071         case CEE_CONV_OVF_I8:
1072         case CEE_CONV_OVF_U8:
1073                 ins->type = STACK_I8;
1074                 ins->opcode += ovf3ops_op_map [src1->type];
1075                 break;
1076         case CEE_CONV_OVF_U8_UN:
1077         case CEE_CONV_OVF_I8_UN:
1078                 ins->type = STACK_I8;
1079                 ins->opcode += ovf2ops_op_map [src1->type];
1080                 break;
1081         case CEE_CONV_R4:
1082                 ins->type = cfg->r4_stack_type;
1083                 ins->opcode += unops_op_map [src1->type];
1084                 break;
1085         case CEE_CONV_R8:
1086                 ins->type = STACK_R8;
1087                 ins->opcode += unops_op_map [src1->type];
1088                 break;
1089         case OP_CKFINITE:
1090                 ins->type = STACK_R8;
1091                 break;
1092         case CEE_CONV_U2:
1093         case CEE_CONV_U1:
1094                 ins->type = STACK_I4;
1095                 ins->opcode += ovfops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_I:
1098         case CEE_CONV_OVF_I:
1099         case CEE_CONV_OVF_U:
1100                 ins->type = STACK_PTR;
1101                 ins->opcode += ovfops_op_map [src1->type];
1102                 break;
1103         case CEE_ADD_OVF:
1104         case CEE_ADD_OVF_UN:
1105         case CEE_MUL_OVF:
1106         case CEE_MUL_OVF_UN:
1107         case CEE_SUB_OVF:
1108         case CEE_SUB_OVF_UN:
1109                 ins->type = bin_num_table [src1->type] [src2->type];
1110                 ins->opcode += ovfops_op_map [src1->type];
1111                 if (ins->type == STACK_R8)
1112                         ins->type = STACK_INV;
1113                 break;
1114         case OP_LOAD_MEMBASE:
1115                 ins->type = STACK_PTR;
1116                 break;
1117         case OP_LOADI1_MEMBASE:
1118         case OP_LOADU1_MEMBASE:
1119         case OP_LOADI2_MEMBASE:
1120         case OP_LOADU2_MEMBASE:
1121         case OP_LOADI4_MEMBASE:
1122         case OP_LOADU4_MEMBASE:
1123                 ins->type = STACK_PTR;
1124                 break;
1125         case OP_LOADI8_MEMBASE:
1126                 ins->type = STACK_I8;
1127                 break;
1128         case OP_LOADR4_MEMBASE:
1129                 ins->type = cfg->r4_stack_type;
1130                 break;
1131         case OP_LOADR8_MEMBASE:
1132                 ins->type = STACK_R8;
1133                 break;
1134         default:
1135                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1136                 break;
1137         }
1138
1139         if (ins->type == STACK_MP)
1140                 ins->klass = mono_defaults.object_class;
1141 }
1142
1143 static const char
1144 ldind_type [] = {
1145         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1146 };
1147
1148 #if 0
1149
1150 static const char
1151 param_table [STACK_MAX] [STACK_MAX] = {
1152         {0},
1153 };
1154
1155 static int
1156 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1157 {
1158         int i;
1159
1160         if (sig->hasthis) {
1161                 switch (args->type) {
1162                 case STACK_I4:
1163                 case STACK_I8:
1164                 case STACK_R8:
1165                 case STACK_VTYPE:
1166                 case STACK_INV:
1167                         return 0;
1168                 }
1169                 args++;
1170         }
1171         for (i = 0; i < sig->param_count; ++i) {
1172                 switch (args [i].type) {
1173                 case STACK_INV:
1174                         return 0;
1175                 case STACK_MP:
1176                         if (!sig->params [i]->byref)
1177                                 return 0;
1178                         continue;
1179                 case STACK_OBJ:
1180                         if (sig->params [i]->byref)
1181                                 return 0;
1182                         switch (sig->params [i]->type) {
1183                         case MONO_TYPE_CLASS:
1184                         case MONO_TYPE_STRING:
1185                         case MONO_TYPE_OBJECT:
1186                         case MONO_TYPE_SZARRAY:
1187                         case MONO_TYPE_ARRAY:
1188                                 break;
1189                         default:
1190                                 return 0;
1191                         }
1192                         continue;
1193                 case STACK_R8:
1194                         if (sig->params [i]->byref)
1195                                 return 0;
1196                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1197                                 return 0;
1198                         continue;
1199                 case STACK_PTR:
1200                 case STACK_I4:
1201                 case STACK_I8:
1202                 case STACK_VTYPE:
1203                         break;
1204                 }
1205                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1206                         return 0;*/
1207         }
1208         return 1;
1209 }
1210 #endif
1211
1212 /*
1213  * When we need a pointer to the current domain many times in a method, we
1214  * call mono_domain_get() once and we store the result in a local variable.
1215  * This function returns the variable that represents the MonoDomain*.
1216  */
1217 inline static MonoInst *
1218 mono_get_domainvar (MonoCompile *cfg)
1219 {
1220         if (!cfg->domainvar)
1221                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1222         return cfg->domainvar;
1223 }
1224
1225 /*
1226  * The got_var contains the address of the Global Offset Table when AOT
1227  * compiling.
1228  */
1229 MonoInst *
1230 mono_get_got_var (MonoCompile *cfg)
1231 {
1232         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1233                 return NULL;
1234         if (!cfg->got_var) {
1235                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1236         }
1237         return cfg->got_var;
1238 }
1239
1240 static MonoInst *
1241 mono_get_vtable_var (MonoCompile *cfg)
1242 {
1243         g_assert (cfg->gshared);
1244
1245         if (!cfg->rgctx_var) {
1246                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1247                 /* force the var to be stack allocated */
1248                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1249         }
1250
1251         return cfg->rgctx_var;
1252 }
1253
1254 static MonoType*
1255 type_from_stack_type (MonoInst *ins) {
1256         switch (ins->type) {
1257         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1258         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1259         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1260         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1261         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1262         case STACK_MP:
1263                 return &ins->klass->this_arg;
1264         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1265         case STACK_VTYPE: return &ins->klass->byval_arg;
1266         default:
1267                 g_error ("stack type %d to monotype not handled\n", ins->type);
1268         }
1269         return NULL;
1270 }
1271
1272 static G_GNUC_UNUSED int
1273 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1274 {
1275         t = mono_type_get_underlying_type (t);
1276         switch (t->type) {
1277         case MONO_TYPE_I1:
1278         case MONO_TYPE_U1:
1279         case MONO_TYPE_I2:
1280         case MONO_TYPE_U2:
1281         case MONO_TYPE_I4:
1282         case MONO_TYPE_U4:
1283                 return STACK_I4;
1284         case MONO_TYPE_I:
1285         case MONO_TYPE_U:
1286         case MONO_TYPE_PTR:
1287         case MONO_TYPE_FNPTR:
1288                 return STACK_PTR;
1289         case MONO_TYPE_CLASS:
1290         case MONO_TYPE_STRING:
1291         case MONO_TYPE_OBJECT:
1292         case MONO_TYPE_SZARRAY:
1293         case MONO_TYPE_ARRAY:
1294                 return STACK_OBJ;
1295         case MONO_TYPE_I8:
1296         case MONO_TYPE_U8:
1297                 return STACK_I8;
1298         case MONO_TYPE_R4:
1299                 return cfg->r4_stack_type;
1300         case MONO_TYPE_R8:
1301                 return STACK_R8;
1302         case MONO_TYPE_VALUETYPE:
1303         case MONO_TYPE_TYPEDBYREF:
1304                 return STACK_VTYPE;
1305         case MONO_TYPE_GENERICINST:
1306                 if (mono_type_generic_inst_is_valuetype (t))
1307                         return STACK_VTYPE;
1308                 else
1309                         return STACK_OBJ;
1310                 break;
1311         default:
1312                 g_assert_not_reached ();
1313         }
1314
1315         return -1;
1316 }
1317
1318 static MonoClass*
1319 array_access_to_klass (int opcode)
1320 {
1321         switch (opcode) {
1322         case CEE_LDELEM_U1:
1323                 return mono_defaults.byte_class;
1324         case CEE_LDELEM_U2:
1325                 return mono_defaults.uint16_class;
1326         case CEE_LDELEM_I:
1327         case CEE_STELEM_I:
1328                 return mono_defaults.int_class;
1329         case CEE_LDELEM_I1:
1330         case CEE_STELEM_I1:
1331                 return mono_defaults.sbyte_class;
1332         case CEE_LDELEM_I2:
1333         case CEE_STELEM_I2:
1334                 return mono_defaults.int16_class;
1335         case CEE_LDELEM_I4:
1336         case CEE_STELEM_I4:
1337                 return mono_defaults.int32_class;
1338         case CEE_LDELEM_U4:
1339                 return mono_defaults.uint32_class;
1340         case CEE_LDELEM_I8:
1341         case CEE_STELEM_I8:
1342                 return mono_defaults.int64_class;
1343         case CEE_LDELEM_R4:
1344         case CEE_STELEM_R4:
1345                 return mono_defaults.single_class;
1346         case CEE_LDELEM_R8:
1347         case CEE_STELEM_R8:
1348                 return mono_defaults.double_class;
1349         case CEE_LDELEM_REF:
1350         case CEE_STELEM_REF:
1351                 return mono_defaults.object_class;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355         return NULL;
1356 }
1357
1358 /*
1359  * We try to share variables when possible
1360  */
1361 static MonoInst *
1362 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1363 {
1364         MonoInst *res;
1365         int pos, vnum;
1366
1367         /* inlining can result in deeper stacks */
1368         if (slot >= cfg->header->max_stack)
1369                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1370
1371         pos = ins->type - 1 + slot * STACK_MAX;
1372
1373         switch (ins->type) {
1374         case STACK_I4:
1375         case STACK_I8:
1376         case STACK_R8:
1377         case STACK_PTR:
1378         case STACK_MP:
1379         case STACK_OBJ:
1380                 if ((vnum = cfg->intvars [pos]))
1381                         return cfg->varinfo [vnum];
1382                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1383                 cfg->intvars [pos] = res->inst_c0;
1384                 break;
1385         default:
1386                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1387         }
1388         return res;
1389 }
1390
1391 static void
1392 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1393 {
1394         /*
1395          * Don't use this if a generic_context is set, since that means AOT can't
1396          * look up the method using just the image+token.
1397          * table == 0 means this is a reference made from a wrapper.
1398          */
1399         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1400                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1401                 jump_info_token->image = image;
1402                 jump_info_token->token = token;
1403                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1404         }
1405 }
1406
1407 /*
1408  * This function is called to handle items that are left on the evaluation stack
1409  * at basic block boundaries. What happens is that we save the values to local variables
1410  * and we reload them later when first entering the target basic block (with the
1411  * handle_loaded_temps () function).
1412  * A single joint point will use the same variables (stored in the array bb->out_stack or
1413  * bb->in_stack, if the basic block is before or after the joint point).
1414  *
1415  * This function needs to be called _before_ emitting the last instruction of
1416  * the bb (i.e. before emitting a branch).
1417  * If the stack merge fails at a join point, cfg->unverifiable is set.
1418  */
1419 static void
1420 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1421 {
1422         int i, bindex;
1423         MonoBasicBlock *bb = cfg->cbb;
1424         MonoBasicBlock *outb;
1425         MonoInst *inst, **locals;
1426         gboolean found;
1427
1428         if (!count)
1429                 return;
1430         if (cfg->verbose_level > 3)
1431                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1432         if (!bb->out_scount) {
1433                 bb->out_scount = count;
1434                 //printf ("bblock %d has out:", bb->block_num);
1435                 found = FALSE;
1436                 for (i = 0; i < bb->out_count; ++i) {
1437                         outb = bb->out_bb [i];
1438                         /* exception handlers are linked, but they should not be considered for stack args */
1439                         if (outb->flags & BB_EXCEPTION_HANDLER)
1440                                 continue;
1441                         //printf (" %d", outb->block_num);
1442                         if (outb->in_stack) {
1443                                 found = TRUE;
1444                                 bb->out_stack = outb->in_stack;
1445                                 break;
1446                         }
1447                 }
1448                 //printf ("\n");
1449                 if (!found) {
1450                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1451                         for (i = 0; i < count; ++i) {
1452                                 /*
1453                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1454                                  * stack slot and if they are of the same type.
1455                                  * This won't cause conflicts since if 'local' is used to
1456                                  * store one of the values in the in_stack of a bblock, then
1457                                  * the same variable will be used for the same outgoing stack
1458                                  * slot as well.
1459                                  * This doesn't work when inlining methods, since the bblocks
1460                                  * in the inlined methods do not inherit their in_stack from
1461                                  * the bblock they are inlined to. See bug #58863 for an
1462                                  * example.
1463                                  */
1464                                 if (cfg->inlined_method)
1465                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1466                                 else
1467                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1468                         }
1469                 }
1470         }
1471
1472         for (i = 0; i < bb->out_count; ++i) {
1473                 outb = bb->out_bb [i];
1474                 /* exception handlers are linked, but they should not be considered for stack args */
1475                 if (outb->flags & BB_EXCEPTION_HANDLER)
1476                         continue;
1477                 if (outb->in_scount) {
1478                         if (outb->in_scount != bb->out_scount) {
1479                                 cfg->unverifiable = TRUE;
1480                                 return;
1481                         }
1482                         continue; /* check they are the same locals */
1483                 }
1484                 outb->in_scount = count;
1485                 outb->in_stack = bb->out_stack;
1486         }
1487
1488         locals = bb->out_stack;
1489         cfg->cbb = bb;
1490         for (i = 0; i < count; ++i) {
1491                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1492                 inst->cil_code = sp [i]->cil_code;
1493                 sp [i] = locals [i];
1494                 if (cfg->verbose_level > 3)
1495                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1496         }
1497
1498         /*
1499          * It is possible that the out bblocks already have in_stack assigned, and
1500          * the in_stacks differ. In this case, we will store to all the different
1501          * in_stacks.
1502          */
1503
1504         found = TRUE;
1505         bindex = 0;
1506         while (found) {
1507                 /* Find a bblock which has a different in_stack */
1508                 found = FALSE;
1509                 while (bindex < bb->out_count) {
1510                         outb = bb->out_bb [bindex];
1511                         /* exception handlers are linked, but they should not be considered for stack args */
1512                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1513                                 bindex++;
1514                                 continue;
1515                         }
1516                         if (outb->in_stack != locals) {
1517                                 for (i = 0; i < count; ++i) {
1518                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1519                                         inst->cil_code = sp [i]->cil_code;
1520                                         sp [i] = locals [i];
1521                                         if (cfg->verbose_level > 3)
1522                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1523                                 }
1524                                 locals = outb->in_stack;
1525                                 found = TRUE;
1526                                 break;
1527                         }
1528                         bindex ++;
1529                 }
1530         }
1531 }
1532
1533 static MonoInst*
1534 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1535 {
1536         MonoInst *ins;
1537
1538         if (cfg->compile_aot) {
1539                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1540         } else {
1541                 MonoJumpInfo ji;
1542                 gpointer target;
1543
1544                 ji.type = patch_type;
1545                 ji.data.target = data;
1546                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE);
1547
1548                 EMIT_NEW_PCONST (cfg, ins, target);
1549         }
1550         return ins;
1551 }
1552
1553 static void
1554 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1555 {
1556         int ibitmap_reg = alloc_preg (cfg);
1557 #ifdef COMPRESSED_INTERFACE_BITMAP
1558         MonoInst *args [2];
1559         MonoInst *res, *ins;
1560         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1561         MONO_ADD_INS (cfg->cbb, ins);
1562         args [0] = ins;
1563         args [1] = emit_runtime_constant (cfg, MONO_PATCH_INFO_IID, klass);
1564         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1565         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1566 #else
1567         int ibitmap_byte_reg = alloc_preg (cfg);
1568
1569         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1570
1571         if (cfg->compile_aot) {
1572                 int iid_reg = alloc_preg (cfg);
1573                 int shifted_iid_reg = alloc_preg (cfg);
1574                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1575                 int masked_iid_reg = alloc_preg (cfg);
1576                 int iid_one_bit_reg = alloc_preg (cfg);
1577                 int iid_bit_reg = alloc_preg (cfg);
1578                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1579                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1580                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1581                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1582                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1583                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1584                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1585                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1586         } else {
1587                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1588                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1589         }
1590 #endif
1591 }
1592
1593 /*
1594  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1595  * stored in "klass_reg" implements the interface "klass".
1596  */
1597 static void
1598 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1599 {
1600         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1601 }
1602
1603 /*
1604  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1605  * stored in "vtable_reg" implements the interface "klass".
1606  */
1607 static void
1608 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1609 {
1610         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1611 }
1612
1613 /*
1614  * Emit code which checks whenever the interface id of @klass is smaller than
1615  * than the value given by max_iid_reg.
1616 */
1617 static void
1618 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1619                                                  MonoBasicBlock *false_target)
1620 {
1621         if (cfg->compile_aot) {
1622                 int iid_reg = alloc_preg (cfg);
1623                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1624                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1625         }
1626         else
1627                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1628         if (false_target)
1629                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1630         else
1631                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1632 }
1633
1634 /* Same as above, but obtains max_iid from a vtable */
1635 static void
1636 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1637                                                                  MonoBasicBlock *false_target)
1638 {
1639         int max_iid_reg = alloc_preg (cfg);
1640
1641         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1642         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1643 }
1644
1645 /* Same as above, but obtains max_iid from a klass */
1646 static void
1647 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1648                                                                  MonoBasicBlock *false_target)
1649 {
1650         int max_iid_reg = alloc_preg (cfg);
1651
1652         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1653         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1654 }
1655
1656 static void
1657 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1658 {
1659         int idepth_reg = alloc_preg (cfg);
1660         int stypes_reg = alloc_preg (cfg);
1661         int stype = alloc_preg (cfg);
1662
1663         mono_class_setup_supertypes (klass);
1664
1665         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1666                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1667                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1668                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1669         }
1670         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1671         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1672         if (klass_ins) {
1673                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1674         } else if (cfg->compile_aot) {
1675                 int const_reg = alloc_preg (cfg);
1676                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1677                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1678         } else {
1679                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1680         }
1681         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1682 }
1683
1684 static void
1685 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1686 {
1687         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1688 }
1689
1690 static void
1691 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1692 {
1693         int intf_reg = alloc_preg (cfg);
1694
1695         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1696         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1697         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1698         if (true_target)
1699                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1700         else
1701                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1702 }
1703
1704 /*
1705  * Variant of the above that takes a register to the class, not the vtable.
1706  */
1707 static void
1708 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1709 {
1710         int intf_bit_reg = alloc_preg (cfg);
1711
1712         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1713         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1714         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1715         if (true_target)
1716                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1717         else
1718                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1719 }
1720
1721 static inline void
1722 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1723 {
1724         if (klass_inst) {
1725                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1726         } else {
1727                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
1728                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, ins->dreg);
1729         }
1730         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1731 }
1732
1733 static inline void
1734 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1735 {
1736         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1737 }
1738
1739 static inline void
1740 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1741 {
1742         if (cfg->compile_aot) {
1743                 int const_reg = alloc_preg (cfg);
1744                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1745                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1746         } else {
1747                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1748         }
1749         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1750 }
1751
1752 static void
1753 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1754
1755 static void
1756 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1757 {
1758         if (klass->rank) {
1759                 int rank_reg = alloc_preg (cfg);
1760                 int eclass_reg = alloc_preg (cfg);
1761
1762                 g_assert (!klass_inst);
1763                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1764                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1765                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1766                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1767                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1768                 if (klass->cast_class == mono_defaults.object_class) {
1769                         int parent_reg = alloc_preg (cfg);
1770                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1771                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1772                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1773                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1774                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1775                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1776                 } else if (klass->cast_class == mono_defaults.enum_class) {
1777                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1778                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1779                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1780                 } else {
1781                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1782                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1783                 }
1784
1785                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1786                         /* Check that the object is a vector too */
1787                         int bounds_reg = alloc_preg (cfg);
1788                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1789                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1790                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1791                 }
1792         } else {
1793                 int idepth_reg = alloc_preg (cfg);
1794                 int stypes_reg = alloc_preg (cfg);
1795                 int stype = alloc_preg (cfg);
1796
1797                 mono_class_setup_supertypes (klass);
1798
1799                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1800                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1801                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1802                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1803                 }
1804                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1805                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1806                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1807         }
1808 }
1809
1810 static void
1811 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1812 {
1813         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1814 }
1815
1816 static void
1817 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1818 {
1819         int val_reg;
1820
1821         g_assert (val == 0);
1822
1823         if (align == 0)
1824                 align = 4;
1825
1826         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1827                 switch (size) {
1828                 case 1:
1829                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1830                         return;
1831                 case 2:
1832                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1833                         return;
1834                 case 4:
1835                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1836                         return;
1837 #if SIZEOF_REGISTER == 8
1838                 case 8:
1839                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1840                         return;
1841 #endif
1842                 }
1843         }
1844
1845         val_reg = alloc_preg (cfg);
1846
1847         if (SIZEOF_REGISTER == 8)
1848                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1849         else
1850                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1851
1852         if (align < 4) {
1853                 /* This could be optimized further if neccesary */
1854                 while (size >= 1) {
1855                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1856                         offset += 1;
1857                         size -= 1;
1858                 }
1859                 return;
1860         }
1861
1862         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1863                 if (offset % 8) {
1864                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1865                         offset += 4;
1866                         size -= 4;
1867                 }
1868                 while (size >= 8) {
1869                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1870                         offset += 8;
1871                         size -= 8;
1872                 }
1873         }
1874
1875         while (size >= 4) {
1876                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1877                 offset += 4;
1878                 size -= 4;
1879         }
1880         while (size >= 2) {
1881                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1882                 offset += 2;
1883                 size -= 2;
1884         }
1885         while (size >= 1) {
1886                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1887                 offset += 1;
1888                 size -= 1;
1889         }
1890 }
1891
1892 void
1893 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1894 {
1895         int cur_reg;
1896
1897         if (align == 0)
1898                 align = 4;
1899
1900         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1901         g_assert (size < 10000);
1902
1903         if (align < 4) {
1904                 /* This could be optimized further if neccesary */
1905                 while (size >= 1) {
1906                         cur_reg = alloc_preg (cfg);
1907                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1908                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1909                         doffset += 1;
1910                         soffset += 1;
1911                         size -= 1;
1912                 }
1913         }
1914
1915         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1916                 while (size >= 8) {
1917                         cur_reg = alloc_preg (cfg);
1918                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1919                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1920                         doffset += 8;
1921                         soffset += 8;
1922                         size -= 8;
1923                 }
1924         }
1925
1926         while (size >= 4) {
1927                 cur_reg = alloc_preg (cfg);
1928                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1929                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1930                 doffset += 4;
1931                 soffset += 4;
1932                 size -= 4;
1933         }
1934         while (size >= 2) {
1935                 cur_reg = alloc_preg (cfg);
1936                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1937                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1938                 doffset += 2;
1939                 soffset += 2;
1940                 size -= 2;
1941         }
1942         while (size >= 1) {
1943                 cur_reg = alloc_preg (cfg);
1944                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1945                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1946                 doffset += 1;
1947                 soffset += 1;
1948                 size -= 1;
1949         }
1950 }
1951
1952 static void
1953 emit_tls_set (MonoCompile *cfg, int sreg1, MonoTlsKey tls_key)
1954 {
1955         MonoInst *ins, *c;
1956
1957         if (cfg->compile_aot) {
1958                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1959                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1960                 ins->sreg1 = sreg1;
1961                 ins->sreg2 = c->dreg;
1962                 MONO_ADD_INS (cfg->cbb, ins);
1963         } else {
1964                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1965                 ins->sreg1 = sreg1;
1966                 ins->inst_offset = mini_get_tls_offset (tls_key);
1967                 MONO_ADD_INS (cfg->cbb, ins);
1968         }
1969 }
1970
1971 /*
1972  * emit_push_lmf:
1973  *
1974  *   Emit IR to push the current LMF onto the LMF stack.
1975  */
1976 static void
1977 emit_push_lmf (MonoCompile *cfg)
1978 {
1979         /*
1980          * Emit IR to push the LMF:
1981          * lmf_addr = <lmf_addr from tls>
1982          * lmf->lmf_addr = lmf_addr
1983          * lmf->prev_lmf = *lmf_addr
1984          * *lmf_addr = lmf
1985          */
1986         int lmf_reg, prev_lmf_reg;
1987         MonoInst *ins, *lmf_ins;
1988
1989         if (!cfg->lmf_ir)
1990                 return;
1991
1992         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
1993                 /* Load current lmf */
1994                 lmf_ins = mono_get_lmf_intrinsic (cfg);
1995                 g_assert (lmf_ins);
1996                 MONO_ADD_INS (cfg->cbb, lmf_ins);
1997                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1998                 lmf_reg = ins->dreg;
1999                 /* Save previous_lmf */
2000                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2001                 /* Set new LMF */
2002                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2003         } else {
2004                 /*
2005                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2006                  */
2007                 if (!cfg->lmf_addr_var)
2008                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2009
2010 #ifdef HOST_WIN32
2011                 ins = mono_get_jit_tls_intrinsic (cfg);
2012                 if (ins) {
2013                         int jit_tls_dreg = ins->dreg;
2014
2015                         MONO_ADD_INS (cfg->cbb, ins);
2016                         lmf_reg = alloc_preg (cfg);
2017                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2018                 } else {
2019                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2020                 }
2021 #else
2022                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2023                 if (lmf_ins) {
2024                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2025                 } else {
2026 #ifdef TARGET_IOS
2027                         MonoInst *args [16], *jit_tls_ins, *ins;
2028
2029                         /* Inline mono_get_lmf_addr () */
2030                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2031
2032                         /* Load mono_jit_tls_id */
2033                         if (cfg->compile_aot)
2034                                 EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2035                         else
2036                                 EMIT_NEW_ICONST (cfg, args [0], mono_jit_tls_id);
2037                         /* call pthread_getspecific () */
2038                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2039                         /* lmf_addr = &jit_tls->lmf */
2040                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2041                         lmf_ins = ins;
2042 #else
2043                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2044 #endif
2045                 }
2046 #endif
2047                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2048
2049                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2050                 lmf_reg = ins->dreg;
2051
2052                 prev_lmf_reg = alloc_preg (cfg);
2053                 /* Save previous_lmf */
2054                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2055                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2056                 /* Set new lmf */
2057                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2058         }
2059 }
2060
2061 /*
2062  * emit_pop_lmf:
2063  *
2064  *   Emit IR to pop the current LMF from the LMF stack.
2065  */
2066 static void
2067 emit_pop_lmf (MonoCompile *cfg)
2068 {
2069         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2070         MonoInst *ins;
2071
2072         if (!cfg->lmf_ir)
2073                 return;
2074
2075         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2076         lmf_reg = ins->dreg;
2077
2078         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2079                 /* Load previous_lmf */
2080                 prev_lmf_reg = alloc_preg (cfg);
2081                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2082                 /* Set new LMF */
2083                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2084         } else {
2085                 /*
2086                  * Emit IR to pop the LMF:
2087                  * *(lmf->lmf_addr) = lmf->prev_lmf
2088                  */
2089                 /* This could be called before emit_push_lmf () */
2090                 if (!cfg->lmf_addr_var)
2091                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2092                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2093
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                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2097         }
2098 }
2099
2100 static void
2101 emit_instrumentation_call (MonoCompile *cfg, void *func)
2102 {
2103         MonoInst *iargs [1];
2104
2105         /*
2106          * Avoid instrumenting inlined methods since it can
2107          * distort profiling results.
2108          */
2109         if (cfg->method != cfg->current_method)
2110                 return;
2111
2112         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2113                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2114                 mono_emit_jit_icall (cfg, func, iargs);
2115         }
2116 }
2117
2118 static int
2119 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
2120 {
2121 handle_enum:
2122         type = mini_get_underlying_type (type);
2123         switch (type->type) {
2124         case MONO_TYPE_VOID:
2125                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2126         case MONO_TYPE_I1:
2127         case MONO_TYPE_U1:
2128         case MONO_TYPE_I2:
2129         case MONO_TYPE_U2:
2130         case MONO_TYPE_I4:
2131         case MONO_TYPE_U4:
2132                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2133         case MONO_TYPE_I:
2134         case MONO_TYPE_U:
2135         case MONO_TYPE_PTR:
2136         case MONO_TYPE_FNPTR:
2137                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2138         case MONO_TYPE_CLASS:
2139         case MONO_TYPE_STRING:
2140         case MONO_TYPE_OBJECT:
2141         case MONO_TYPE_SZARRAY:
2142         case MONO_TYPE_ARRAY:
2143                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2144         case MONO_TYPE_I8:
2145         case MONO_TYPE_U8:
2146                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2147         case MONO_TYPE_R4:
2148                 if (cfg->r4fp)
2149                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2150                 else
2151                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2152         case MONO_TYPE_R8:
2153                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2154         case MONO_TYPE_VALUETYPE:
2155                 if (type->data.klass->enumtype) {
2156                         type = mono_class_enum_basetype (type->data.klass);
2157                         goto handle_enum;
2158                 } else
2159                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2160         case MONO_TYPE_TYPEDBYREF:
2161                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2162         case MONO_TYPE_GENERICINST:
2163                 type = &type->data.generic_class->container_class->byval_arg;
2164                 goto handle_enum;
2165         case MONO_TYPE_VAR:
2166         case MONO_TYPE_MVAR:
2167                 /* gsharedvt */
2168                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2169         default:
2170                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2171         }
2172         return -1;
2173 }
2174
2175 /*
2176  * target_type_is_incompatible:
2177  * @cfg: MonoCompile context
2178  *
2179  * Check that the item @arg on the evaluation stack can be stored
2180  * in the target type (can be a local, or field, etc).
2181  * The cfg arg can be used to check if we need verification or just
2182  * validity checks.
2183  *
2184  * Returns: non-0 value if arg can't be stored on a target.
2185  */
2186 static int
2187 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2188 {
2189         MonoType *simple_type;
2190         MonoClass *klass;
2191
2192         if (target->byref) {
2193                 /* FIXME: check that the pointed to types match */
2194                 if (arg->type == STACK_MP) {
2195                         MonoClass *base_class = mono_class_from_mono_type (target);
2196                         /* This is needed to handle gshared types + ldaddr */
2197                         simple_type = mini_get_underlying_type (&base_class->byval_arg);
2198                         return target->type != MONO_TYPE_I && arg->klass != base_class && arg->klass != mono_class_from_mono_type (simple_type);
2199                 }
2200                 if (arg->type == STACK_PTR)
2201                         return 0;
2202                 return 1;
2203         }
2204
2205         simple_type = mini_get_underlying_type (target);
2206         switch (simple_type->type) {
2207         case MONO_TYPE_VOID:
2208                 return 1;
2209         case MONO_TYPE_I1:
2210         case MONO_TYPE_U1:
2211         case MONO_TYPE_I2:
2212         case MONO_TYPE_U2:
2213         case MONO_TYPE_I4:
2214         case MONO_TYPE_U4:
2215                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2216                         return 1;
2217                 return 0;
2218         case MONO_TYPE_PTR:
2219                 /* STACK_MP is needed when setting pinned locals */
2220                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2221                         return 1;
2222                 return 0;
2223         case MONO_TYPE_I:
2224         case MONO_TYPE_U:
2225         case MONO_TYPE_FNPTR:
2226                 /*
2227                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2228                  * in native int. (#688008).
2229                  */
2230                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2231                         return 1;
2232                 return 0;
2233         case MONO_TYPE_CLASS:
2234         case MONO_TYPE_STRING:
2235         case MONO_TYPE_OBJECT:
2236         case MONO_TYPE_SZARRAY:
2237         case MONO_TYPE_ARRAY:
2238                 if (arg->type != STACK_OBJ)
2239                         return 1;
2240                 /* FIXME: check type compatibility */
2241                 return 0;
2242         case MONO_TYPE_I8:
2243         case MONO_TYPE_U8:
2244                 if (arg->type != STACK_I8)
2245                         return 1;
2246                 return 0;
2247         case MONO_TYPE_R4:
2248                 if (arg->type != cfg->r4_stack_type)
2249                         return 1;
2250                 return 0;
2251         case MONO_TYPE_R8:
2252                 if (arg->type != STACK_R8)
2253                         return 1;
2254                 return 0;
2255         case MONO_TYPE_VALUETYPE:
2256                 if (arg->type != STACK_VTYPE)
2257                         return 1;
2258                 klass = mono_class_from_mono_type (simple_type);
2259                 if (klass != arg->klass)
2260                         return 1;
2261                 return 0;
2262         case MONO_TYPE_TYPEDBYREF:
2263                 if (arg->type != STACK_VTYPE)
2264                         return 1;
2265                 klass = mono_class_from_mono_type (simple_type);
2266                 if (klass != arg->klass)
2267                         return 1;
2268                 return 0;
2269         case MONO_TYPE_GENERICINST:
2270                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2271                         MonoClass *target_class;
2272                         if (arg->type != STACK_VTYPE)
2273                                 return 1;
2274                         klass = mono_class_from_mono_type (simple_type);
2275                         target_class = mono_class_from_mono_type (target);
2276                         /* The second cases is needed when doing partial sharing */
2277                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2278                                 return 1;
2279                         return 0;
2280                 } else {
2281                         if (arg->type != STACK_OBJ)
2282                                 return 1;
2283                         /* FIXME: check type compatibility */
2284                         return 0;
2285                 }
2286         case MONO_TYPE_VAR:
2287         case MONO_TYPE_MVAR:
2288                 g_assert (cfg->gshared);
2289                 if (mini_type_var_is_vt (simple_type)) {
2290                         if (arg->type != STACK_VTYPE)
2291                                 return 1;
2292                 } else {
2293                         if (arg->type != STACK_OBJ)
2294                                 return 1;
2295                 }
2296                 return 0;
2297         default:
2298                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2299         }
2300         return 1;
2301 }
2302
2303 /*
2304  * Prepare arguments for passing to a function call.
2305  * Return a non-zero value if the arguments can't be passed to the given
2306  * signature.
2307  * The type checks are not yet complete and some conversions may need
2308  * casts on 32 or 64 bit architectures.
2309  *
2310  * FIXME: implement this using target_type_is_incompatible ()
2311  */
2312 static int
2313 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2314 {
2315         MonoType *simple_type;
2316         int i;
2317
2318         if (sig->hasthis) {
2319                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2320                         return 1;
2321                 args++;
2322         }
2323         for (i = 0; i < sig->param_count; ++i) {
2324                 if (sig->params [i]->byref) {
2325                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2326                                 return 1;
2327                         continue;
2328                 }
2329                 simple_type = mini_get_underlying_type (sig->params [i]);
2330 handle_enum:
2331                 switch (simple_type->type) {
2332                 case MONO_TYPE_VOID:
2333                         return 1;
2334                         continue;
2335                 case MONO_TYPE_I1:
2336                 case MONO_TYPE_U1:
2337                 case MONO_TYPE_I2:
2338                 case MONO_TYPE_U2:
2339                 case MONO_TYPE_I4:
2340                 case MONO_TYPE_U4:
2341                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2342                                 return 1;
2343                         continue;
2344                 case MONO_TYPE_I:
2345                 case MONO_TYPE_U:
2346                 case MONO_TYPE_PTR:
2347                 case MONO_TYPE_FNPTR:
2348                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2349                                 return 1;
2350                         continue;
2351                 case MONO_TYPE_CLASS:
2352                 case MONO_TYPE_STRING:
2353                 case MONO_TYPE_OBJECT:
2354                 case MONO_TYPE_SZARRAY:
2355                 case MONO_TYPE_ARRAY:
2356                         if (args [i]->type != STACK_OBJ)
2357                                 return 1;
2358                         continue;
2359                 case MONO_TYPE_I8:
2360                 case MONO_TYPE_U8:
2361                         if (args [i]->type != STACK_I8)
2362                                 return 1;
2363                         continue;
2364                 case MONO_TYPE_R4:
2365                         if (args [i]->type != cfg->r4_stack_type)
2366                                 return 1;
2367                         continue;
2368                 case MONO_TYPE_R8:
2369                         if (args [i]->type != STACK_R8)
2370                                 return 1;
2371                         continue;
2372                 case MONO_TYPE_VALUETYPE:
2373                         if (simple_type->data.klass->enumtype) {
2374                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2375                                 goto handle_enum;
2376                         }
2377                         if (args [i]->type != STACK_VTYPE)
2378                                 return 1;
2379                         continue;
2380                 case MONO_TYPE_TYPEDBYREF:
2381                         if (args [i]->type != STACK_VTYPE)
2382                                 return 1;
2383                         continue;
2384                 case MONO_TYPE_GENERICINST:
2385                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2386                         goto handle_enum;
2387                 case MONO_TYPE_VAR:
2388                 case MONO_TYPE_MVAR:
2389                         /* gsharedvt */
2390                         if (args [i]->type != STACK_VTYPE)
2391                                 return 1;
2392                         continue;
2393                 default:
2394                         g_error ("unknown type 0x%02x in check_call_signature",
2395                                  simple_type->type);
2396                 }
2397         }
2398         return 0;
2399 }
2400
2401 static int
2402 callvirt_to_call (int opcode)
2403 {
2404         switch (opcode) {
2405         case OP_CALL_MEMBASE:
2406                 return OP_CALL;
2407         case OP_VOIDCALL_MEMBASE:
2408                 return OP_VOIDCALL;
2409         case OP_FCALL_MEMBASE:
2410                 return OP_FCALL;
2411         case OP_RCALL_MEMBASE:
2412                 return OP_RCALL;
2413         case OP_VCALL_MEMBASE:
2414                 return OP_VCALL;
2415         case OP_LCALL_MEMBASE:
2416                 return OP_LCALL;
2417         default:
2418                 g_assert_not_reached ();
2419         }
2420
2421         return -1;
2422 }
2423
2424 static int
2425 callvirt_to_call_reg (int opcode)
2426 {
2427         switch (opcode) {
2428         case OP_CALL_MEMBASE:
2429                 return OP_CALL_REG;
2430         case OP_VOIDCALL_MEMBASE:
2431                 return OP_VOIDCALL_REG;
2432         case OP_FCALL_MEMBASE:
2433                 return OP_FCALL_REG;
2434         case OP_RCALL_MEMBASE:
2435                 return OP_RCALL_REG;
2436         case OP_VCALL_MEMBASE:
2437                 return OP_VCALL_REG;
2438         case OP_LCALL_MEMBASE:
2439                 return OP_LCALL_REG;
2440         default:
2441                 g_assert_not_reached ();
2442         }
2443
2444         return -1;
2445 }
2446
2447 /* Either METHOD or IMT_ARG needs to be set */
2448 static void
2449 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2450 {
2451         int method_reg;
2452
2453         if (COMPILE_LLVM (cfg)) {
2454                 if (imt_arg) {
2455                         method_reg = alloc_preg (cfg);
2456                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2457                 } else {
2458                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2459                         method_reg = ins->dreg;
2460                 }
2461
2462 #ifdef ENABLE_LLVM
2463                 call->imt_arg_reg = method_reg;
2464 #endif
2465                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2466                 return;
2467         }
2468
2469         if (imt_arg) {
2470                 method_reg = alloc_preg (cfg);
2471                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2472         } else {
2473                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2474                 method_reg = ins->dreg;
2475         }
2476
2477         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2478 }
2479
2480 static MonoJumpInfo *
2481 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2482 {
2483         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2484
2485         ji->ip.i = ip;
2486         ji->type = type;
2487         ji->data.target = target;
2488
2489         return ji;
2490 }
2491
2492 static int
2493 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2494 {
2495         if (cfg->gshared)
2496                 return mono_class_check_context_used (klass);
2497         else
2498                 return 0;
2499 }
2500
2501 static int
2502 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2503 {
2504         if (cfg->gshared)
2505                 return mono_method_check_context_used (method);
2506         else
2507                 return 0;
2508 }
2509
2510 /*
2511  * check_method_sharing:
2512  *
2513  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2514  */
2515 static void
2516 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2517 {
2518         gboolean pass_vtable = FALSE;
2519         gboolean pass_mrgctx = FALSE;
2520
2521         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2522                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2523                 gboolean sharable = FALSE;
2524
2525                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2526                         sharable = TRUE;
2527
2528                 /*
2529                  * Pass vtable iff target method might
2530                  * be shared, which means that sharing
2531                  * is enabled for its class and its
2532                  * context is sharable (and it's not a
2533                  * generic method).
2534                  */
2535                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2536                         pass_vtable = TRUE;
2537         }
2538
2539         if (mini_method_get_context (cmethod) &&
2540                 mini_method_get_context (cmethod)->method_inst) {
2541                 g_assert (!pass_vtable);
2542
2543                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2544                         pass_mrgctx = TRUE;
2545                 } else {
2546                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2547                                 pass_mrgctx = TRUE;
2548                 }
2549         }
2550
2551         if (out_pass_vtable)
2552                 *out_pass_vtable = pass_vtable;
2553         if (out_pass_mrgctx)
2554                 *out_pass_mrgctx = pass_mrgctx;
2555 }
2556
2557 inline static MonoCallInst *
2558 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2559                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2560 {
2561         MonoType *sig_ret;
2562         MonoCallInst *call;
2563 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2564         int i;
2565 #endif
2566
2567         if (cfg->llvm_only)
2568                 tail = FALSE;
2569
2570         if (tail) {
2571                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2572
2573                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2574         } else
2575                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2576
2577         call->args = args;
2578         call->signature = sig;
2579         call->rgctx_reg = rgctx;
2580         sig_ret = mini_get_underlying_type (sig->ret);
2581
2582         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2583
2584         if (tail) {
2585                 if (mini_type_is_vtype (sig_ret)) {
2586                         call->vret_var = cfg->vret_addr;
2587                         //g_assert_not_reached ();
2588                 }
2589         } else if (mini_type_is_vtype (sig_ret)) {
2590                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2591                 MonoInst *loada;
2592
2593                 temp->backend.is_pinvoke = sig->pinvoke;
2594
2595                 /*
2596                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2597                  * address of return value to increase optimization opportunities.
2598                  * Before vtype decomposition, the dreg of the call ins itself represents the
2599                  * fact the call modifies the return value. After decomposition, the call will
2600                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2601                  * will be transformed into an LDADDR.
2602                  */
2603                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2604                 loada->dreg = alloc_preg (cfg);
2605                 loada->inst_p0 = temp;
2606                 /* We reference the call too since call->dreg could change during optimization */
2607                 loada->inst_p1 = call;
2608                 MONO_ADD_INS (cfg->cbb, loada);
2609
2610                 call->inst.dreg = temp->dreg;
2611
2612                 call->vret_var = loada;
2613         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2614                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2615
2616 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2617         if (COMPILE_SOFT_FLOAT (cfg)) {
2618                 /*
2619                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2620                  * an icall, but that cannot be done during the call sequence since it would clobber
2621                  * the call registers + the stack. So we do it before emitting the call.
2622                  */
2623                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2624                         MonoType *t;
2625                         MonoInst *in = call->args [i];
2626
2627                         if (i >= sig->hasthis)
2628                                 t = sig->params [i - sig->hasthis];
2629                         else
2630                                 t = &mono_defaults.int_class->byval_arg;
2631                         t = mono_type_get_underlying_type (t);
2632
2633                         if (!t->byref && t->type == MONO_TYPE_R4) {
2634                                 MonoInst *iargs [1];
2635                                 MonoInst *conv;
2636
2637                                 iargs [0] = in;
2638                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2639
2640                                 /* The result will be in an int vreg */
2641                                 call->args [i] = conv;
2642                         }
2643                 }
2644         }
2645 #endif
2646
2647         call->need_unbox_trampoline = unbox_trampoline;
2648
2649 #ifdef ENABLE_LLVM
2650         if (COMPILE_LLVM (cfg))
2651                 mono_llvm_emit_call (cfg, call);
2652         else
2653                 mono_arch_emit_call (cfg, call);
2654 #else
2655         mono_arch_emit_call (cfg, call);
2656 #endif
2657
2658         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2659         cfg->flags |= MONO_CFG_HAS_CALLS;
2660
2661         return call;
2662 }
2663
2664 static void
2665 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2666 {
2667         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2668         cfg->uses_rgctx_reg = TRUE;
2669         call->rgctx_reg = TRUE;
2670 #ifdef ENABLE_LLVM
2671         call->rgctx_arg_reg = rgctx_reg;
2672 #endif
2673 }
2674
2675 inline static MonoInst*
2676 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2677 {
2678         MonoCallInst *call;
2679         MonoInst *ins;
2680         int rgctx_reg = -1;
2681         gboolean check_sp = FALSE;
2682
2683         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2684                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2685
2686                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2687                         check_sp = TRUE;
2688         }
2689
2690         if (rgctx_arg) {
2691                 rgctx_reg = mono_alloc_preg (cfg);
2692                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2693         }
2694
2695         if (check_sp) {
2696                 if (!cfg->stack_inbalance_var)
2697                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2698
2699                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2700                 ins->dreg = cfg->stack_inbalance_var->dreg;
2701                 MONO_ADD_INS (cfg->cbb, ins);
2702         }
2703
2704         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2705
2706         call->inst.sreg1 = addr->dreg;
2707
2708         if (imt_arg)
2709                 emit_imt_argument (cfg, call, NULL, imt_arg);
2710
2711         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2712
2713         if (check_sp) {
2714                 int sp_reg;
2715
2716                 sp_reg = mono_alloc_preg (cfg);
2717
2718                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2719                 ins->dreg = sp_reg;
2720                 MONO_ADD_INS (cfg->cbb, ins);
2721
2722                 /* Restore the stack so we don't crash when throwing the exception */
2723                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2724                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2725                 MONO_ADD_INS (cfg->cbb, ins);
2726
2727                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2728                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2729         }
2730
2731         if (rgctx_arg)
2732                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2733
2734         return (MonoInst*)call;
2735 }
2736
2737 static MonoInst*
2738 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2739
2740 static MonoInst*
2741 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2742 static MonoInst*
2743 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2744
2745 static MonoInst*
2746 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2747                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2748 {
2749 #ifndef DISABLE_REMOTING
2750         gboolean might_be_remote = FALSE;
2751 #endif
2752         gboolean virtual_ = this_ins != NULL;
2753         gboolean enable_for_aot = TRUE;
2754         int context_used;
2755         MonoCallInst *call;
2756         MonoInst *call_target = NULL;
2757         int rgctx_reg = 0;
2758         gboolean need_unbox_trampoline;
2759
2760         if (!sig)
2761                 sig = mono_method_signature (method);
2762
2763         if (cfg->llvm_only && (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
2764                 MonoInst *icall_args [16];
2765                 MonoInst *ins;
2766
2767                 // FIXME: Optimize this
2768
2769                 guint32 imt_slot = mono_method_get_imt_slot (method);
2770
2771                 icall_args [0] = this_ins;
2772                 EMIT_NEW_ICONST (cfg, icall_args [1], imt_slot);
2773                 if (imt_arg) {
2774                         icall_args [2] = imt_arg;
2775                 } else {
2776                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_METHODCONST, method);
2777                         icall_args [2] = ins;
2778                 }
2779                 EMIT_NEW_PCONST (cfg, icall_args [3], NULL);
2780
2781                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call, icall_args);
2782         }
2783
2784         if (rgctx_arg) {
2785                 rgctx_reg = mono_alloc_preg (cfg);
2786                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2787         }
2788
2789         if (method->string_ctor) {
2790                 /* Create the real signature */
2791                 /* FIXME: Cache these */
2792                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2793                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2794
2795                 sig = ctor_sig;
2796         }
2797
2798         context_used = mini_method_check_context_used (cfg, method);
2799
2800 #ifndef DISABLE_REMOTING
2801         might_be_remote = this_ins && sig->hasthis &&
2802                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2803                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2804
2805         if (might_be_remote && context_used) {
2806                 MonoInst *addr;
2807
2808                 g_assert (cfg->gshared);
2809
2810                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2811
2812                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2813         }
2814 #endif
2815
2816         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
2817                 // FIXME: Vcall optimizations below
2818                 MonoInst *icall_args [16];
2819                 MonoInst *ins;
2820                 int rgctx_reg;
2821
2822                 if (sig->generic_param_count) {
2823                         /*
2824                          * Generic virtual call, pass the concrete method as the imt argument.
2825                          */
2826                         imt_arg = emit_get_rgctx_method (cfg, context_used,
2827                                                                                          method, MONO_RGCTX_INFO_METHOD);
2828                 }
2829
2830                 // FIXME: Optimize this
2831
2832                 int slot = mono_method_get_vtable_index (method);
2833
2834                 icall_args [0] = this_ins;
2835                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
2836                 if (imt_arg) {
2837                         icall_args [2] = imt_arg;
2838                 } else {
2839                         EMIT_NEW_PCONST (cfg, ins, NULL);
2840                         icall_args [2] = ins;
2841                 }
2842                 rgctx_reg = alloc_preg (cfg);
2843                 MONO_EMIT_NEW_PCONST (cfg, rgctx_reg, NULL);
2844                 EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], rgctx_reg, &mono_defaults.int_class->byval_arg);
2845                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall, icall_args);
2846         }
2847
2848         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2849
2850         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2851
2852 #ifndef DISABLE_REMOTING
2853         if (might_be_remote)
2854                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2855         else
2856 #endif
2857                 call->method = method;
2858         call->inst.flags |= MONO_INST_HAS_METHOD;
2859         call->inst.inst_left = this_ins;
2860         call->tail_call = tail;
2861
2862         if (virtual_) {
2863                 int vtable_reg, slot_reg, this_reg;
2864                 int offset;
2865
2866                 this_reg = this_ins->dreg;
2867
2868                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2869                         MonoInst *dummy_use;
2870
2871                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2872
2873                         /* Make a call to delegate->invoke_impl */
2874                         call->inst.inst_basereg = this_reg;
2875                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2876                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2877
2878                         /* We must emit a dummy use here because the delegate trampoline will
2879                         replace the 'this' argument with the delegate target making this activation
2880                         no longer a root for the delegate.
2881                         This is an issue for delegates that target collectible code such as dynamic
2882                         methods of GC'able assemblies.
2883
2884                         For a test case look into #667921.
2885
2886                         FIXME: a dummy use is not the best way to do it as the local register allocator
2887                         will put it on a caller save register and spil it around the call.
2888                         Ideally, we would either put it on a callee save register or only do the store part.
2889                          */
2890                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2891
2892                         return (MonoInst*)call;
2893                 }
2894
2895                 if ((!cfg->compile_aot || enable_for_aot) &&
2896                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2897                          (MONO_METHOD_IS_FINAL (method) &&
2898                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2899                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2900                         /*
2901                          * the method is not virtual, we just need to ensure this is not null
2902                          * and then we can call the method directly.
2903                          */
2904 #ifndef DISABLE_REMOTING
2905                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2906                                 /*
2907                                  * The check above ensures method is not gshared, this is needed since
2908                                  * gshared methods can't have wrappers.
2909                                  */
2910                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2911                         }
2912 #endif
2913
2914                         if (!method->string_ctor)
2915                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2916
2917                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2918                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2919                         /*
2920                          * the method is virtual, but we can statically dispatch since either
2921                          * it's class or the method itself are sealed.
2922                          * But first we need to ensure it's not a null reference.
2923                          */
2924                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2925
2926                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2927                 } else if (call_target) {
2928                         vtable_reg = alloc_preg (cfg);
2929                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2930
2931                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2932                         call->inst.sreg1 = call_target->dreg;
2933                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2934                 } else {
2935                         vtable_reg = alloc_preg (cfg);
2936                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2937                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2938                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2939                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2940                                 slot_reg = vtable_reg;
2941                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2942                         } else {
2943                                 slot_reg = vtable_reg;
2944                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2945                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2946                                 if (imt_arg) {
2947                                         g_assert (mono_method_signature (method)->generic_param_count);
2948                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2949                                 }
2950                         }
2951
2952                         call->inst.sreg1 = slot_reg;
2953                         call->inst.inst_offset = offset;
2954                         call->is_virtual = TRUE;
2955                 }
2956         }
2957
2958         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2959
2960         if (rgctx_arg)
2961                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2962
2963         return (MonoInst*)call;
2964 }
2965
2966 MonoInst*
2967 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2968 {
2969         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2970 }
2971
2972 MonoInst*
2973 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2974                                            MonoInst **args)
2975 {
2976         MonoCallInst *call;
2977
2978         g_assert (sig);
2979
2980         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2981         call->fptr = func;
2982
2983         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2984
2985         return (MonoInst*)call;
2986 }
2987
2988 MonoInst*
2989 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2990 {
2991         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2992
2993         g_assert (info);
2994
2995         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2996 }
2997
2998 /*
2999  * mono_emit_abs_call:
3000  *
3001  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
3002  */
3003 inline static MonoInst*
3004 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
3005                                         MonoMethodSignature *sig, MonoInst **args)
3006 {
3007         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
3008         MonoInst *ins;
3009
3010         /*
3011          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
3012          * handle it.
3013          */
3014         if (cfg->abs_patches == NULL)
3015                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
3016         g_hash_table_insert (cfg->abs_patches, ji, ji);
3017         ins = mono_emit_native_call (cfg, ji, sig, args);
3018         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
3019         return ins;
3020 }
3021
3022 static MonoMethodSignature*
3023 sig_to_rgctx_sig (MonoMethodSignature *sig)
3024 {
3025         // FIXME: memory allocation
3026         MonoMethodSignature *res;
3027         int i;
3028
3029         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
3030         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
3031         res->param_count = sig->param_count + 1;
3032         for (i = 0; i < sig->param_count; ++i)
3033                 res->params [i] = sig->params [i];
3034         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
3035         return res;
3036 }
3037
3038 /* Make an indirect call to FSIG passing an additional argument */
3039 static MonoInst*
3040 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
3041 {
3042         MonoMethodSignature *csig;
3043         MonoInst *args_buf [16];
3044         MonoInst **args;
3045         int i, pindex, tmp_reg;
3046
3047         /* Make a call with an rgctx/extra arg */
3048         if (fsig->param_count + 2 < 16)
3049                 args = args_buf;
3050         else
3051                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
3052         pindex = 0;
3053         if (fsig->hasthis)
3054                 args [pindex ++] = orig_args [0];
3055         for (i = 0; i < fsig->param_count; ++i)
3056                 args [pindex ++] = orig_args [fsig->hasthis + i];
3057         tmp_reg = alloc_preg (cfg);
3058         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
3059         csig = sig_to_rgctx_sig (fsig);
3060         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
3061 }
3062
3063 /* Emit an indirect call to the function descriptor ADDR */
3064 static MonoInst*
3065 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
3066 {
3067         int addr_reg, arg_reg;
3068         MonoInst *call_target;
3069
3070         g_assert (cfg->llvm_only);
3071
3072         /*
3073          * addr points to a <addr, arg> pair, load both of them, and
3074          * make a call to addr, passing arg as an extra arg.
3075          */
3076         addr_reg = alloc_preg (cfg);
3077         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
3078         arg_reg = alloc_preg (cfg);
3079         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
3080
3081         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
3082 }
3083
3084 static gboolean
3085 direct_icalls_enabled (MonoCompile *cfg)
3086 {
3087         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3088 #ifdef TARGET_AMD64
3089         if (cfg->compile_llvm)
3090                 return FALSE;
3091 #endif
3092         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
3093                 return FALSE;
3094         return TRUE;
3095 }
3096
3097 MonoInst*
3098 mono_emit_jit_icall_by_info (MonoCompile *cfg, MonoJitICallInfo *info, MonoInst **args)
3099 {
3100         /*
3101          * Call the jit icall without a wrapper if possible.
3102          * The wrapper is needed for the following reasons:
3103          * - to handle exceptions thrown using mono_raise_exceptions () from the
3104          *   icall function. The EH code needs the lmf frame pushed by the
3105          *   wrapper to be able to unwind back to managed code.
3106          * - to be able to do stack walks for asynchronously suspended
3107          *   threads when debugging.
3108          */
3109         if (info->no_raise && direct_icalls_enabled (cfg)) {
3110                 char *name;
3111                 int costs;
3112
3113                 if (!info->wrapper_method) {
3114                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
3115                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
3116                         g_free (name);
3117                         mono_memory_barrier ();
3118                 }
3119
3120                 /*
3121                  * Inline the wrapper method, which is basically a call to the C icall, and
3122                  * an exception check.
3123                  */
3124                 costs = inline_method (cfg, info->wrapper_method, NULL,
3125                                                            args, NULL, cfg->real_offset, TRUE);
3126                 g_assert (costs > 0);
3127                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
3128
3129                 return args [0];
3130         } else {
3131                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3132         }
3133 }
3134
3135 static MonoInst*
3136 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3137 {
3138         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3139                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3140                         int widen_op = -1;
3141
3142                         /*
3143                          * Native code might return non register sized integers
3144                          * without initializing the upper bits.
3145                          */
3146                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3147                         case OP_LOADI1_MEMBASE:
3148                                 widen_op = OP_ICONV_TO_I1;
3149                                 break;
3150                         case OP_LOADU1_MEMBASE:
3151                                 widen_op = OP_ICONV_TO_U1;
3152                                 break;
3153                         case OP_LOADI2_MEMBASE:
3154                                 widen_op = OP_ICONV_TO_I2;
3155                                 break;
3156                         case OP_LOADU2_MEMBASE:
3157                                 widen_op = OP_ICONV_TO_U2;
3158                                 break;
3159                         default:
3160                                 break;
3161                         }
3162
3163                         if (widen_op != -1) {
3164                                 int dreg = alloc_preg (cfg);
3165                                 MonoInst *widen;
3166
3167                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3168                                 widen->type = ins->type;
3169                                 ins = widen;
3170                         }
3171                 }
3172         }
3173
3174         return ins;
3175 }
3176
3177 static MonoMethod*
3178 get_memcpy_method (void)
3179 {
3180         static MonoMethod *memcpy_method = NULL;
3181         if (!memcpy_method) {
3182                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3183                 if (!memcpy_method)
3184                         g_error ("Old corlib found. Install a new one");
3185         }
3186         return memcpy_method;
3187 }
3188
3189 static void
3190 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3191 {
3192         MonoClassField *field;
3193         gpointer iter = NULL;
3194
3195         while ((field = mono_class_get_fields (klass, &iter))) {
3196                 int foffset;
3197
3198                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3199                         continue;
3200                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3201                 if (mini_type_is_reference (mono_field_get_type (field))) {
3202                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3203                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3204                 } else {
3205                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3206                         if (field_class->has_references)
3207                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3208                 }
3209         }
3210 }
3211
3212 static void
3213 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3214 {
3215         int card_table_shift_bits;
3216         gpointer card_table_mask;
3217         guint8 *card_table;
3218         MonoInst *dummy_use;
3219         int nursery_shift_bits;
3220         size_t nursery_size;
3221
3222         if (!cfg->gen_write_barriers)
3223                 return;
3224
3225         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3226
3227         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3228
3229         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3230                 MonoInst *wbarrier;
3231
3232                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3233                 wbarrier->sreg1 = ptr->dreg;
3234                 wbarrier->sreg2 = value->dreg;
3235                 MONO_ADD_INS (cfg->cbb, wbarrier);
3236         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3237                 int offset_reg = alloc_preg (cfg);
3238                 int card_reg;
3239                 MonoInst *ins;
3240
3241                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3242                 if (card_table_mask)
3243                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3244
3245                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3246                  * IMM's larger than 32bits.
3247                  */
3248                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3249                 card_reg = ins->dreg;
3250
3251                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3252                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3253         } else {
3254                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3255                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3256         }
3257
3258         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3259 }
3260
3261 static gboolean
3262 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3263 {
3264         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3265         unsigned need_wb = 0;
3266
3267         if (align == 0)
3268                 align = 4;
3269
3270         /*types with references can't have alignment smaller than sizeof(void*) */
3271         if (align < SIZEOF_VOID_P)
3272                 return FALSE;
3273
3274         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3275         if (size > 32 * SIZEOF_VOID_P)
3276                 return FALSE;
3277
3278         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3279
3280         /* We don't unroll more than 5 stores to avoid code bloat. */
3281         if (size > 5 * SIZEOF_VOID_P) {
3282                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3283                 size += (SIZEOF_VOID_P - 1);
3284                 size &= ~(SIZEOF_VOID_P - 1);
3285
3286                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3287                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3288                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3289                 return TRUE;
3290         }
3291
3292         destreg = iargs [0]->dreg;
3293         srcreg = iargs [1]->dreg;
3294         offset = 0;
3295
3296         dest_ptr_reg = alloc_preg (cfg);
3297         tmp_reg = alloc_preg (cfg);
3298
3299         /*tmp = dreg*/
3300         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3301
3302         while (size >= SIZEOF_VOID_P) {
3303                 MonoInst *load_inst;
3304                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3305                 load_inst->dreg = tmp_reg;
3306                 load_inst->inst_basereg = srcreg;
3307                 load_inst->inst_offset = offset;
3308                 MONO_ADD_INS (cfg->cbb, load_inst);
3309
3310                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3311
3312                 if (need_wb & 0x1)
3313                         emit_write_barrier (cfg, iargs [0], load_inst);
3314
3315                 offset += SIZEOF_VOID_P;
3316                 size -= SIZEOF_VOID_P;
3317                 need_wb >>= 1;
3318
3319                 /*tmp += sizeof (void*)*/
3320                 if (size >= SIZEOF_VOID_P) {
3321                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3322                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3323                 }
3324         }
3325
3326         /* Those cannot be references since size < sizeof (void*) */
3327         while (size >= 4) {
3328                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3329                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3330                 offset += 4;
3331                 size -= 4;
3332         }
3333
3334         while (size >= 2) {
3335                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3336                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3337                 offset += 2;
3338                 size -= 2;
3339         }
3340
3341         while (size >= 1) {
3342                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3343                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3344                 offset += 1;
3345                 size -= 1;
3346         }
3347
3348         return TRUE;
3349 }
3350
3351 /*
3352  * Emit code to copy a valuetype of type @klass whose address is stored in
3353  * @src->dreg to memory whose address is stored at @dest->dreg.
3354  */
3355 void
3356 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3357 {
3358         MonoInst *iargs [4];
3359         int n;
3360         guint32 align = 0;
3361         MonoMethod *memcpy_method;
3362         MonoInst *size_ins = NULL;
3363         MonoInst *memcpy_ins = NULL;
3364
3365         g_assert (klass);
3366         if (cfg->gshared)
3367                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3368
3369         /*
3370          * This check breaks with spilled vars... need to handle it during verification anyway.
3371          * g_assert (klass && klass == src->klass && klass == dest->klass);
3372          */
3373
3374         if (mini_is_gsharedvt_klass (klass)) {
3375                 g_assert (!native);
3376                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3377                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3378         }
3379
3380         if (native)
3381                 n = mono_class_native_size (klass, &align);
3382         else
3383                 n = mono_class_value_size (klass, &align);
3384
3385         /* if native is true there should be no references in the struct */
3386         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3387                 /* Avoid barriers when storing to the stack */
3388                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3389                           (dest->opcode == OP_LDADDR))) {
3390                         int context_used;
3391
3392                         iargs [0] = dest;
3393                         iargs [1] = src;
3394
3395                         context_used = mini_class_check_context_used (cfg, klass);
3396
3397                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3398                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3399                                 return;
3400                         } else if (context_used) {
3401                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3402                         }  else {
3403                                 iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3404                                 if (!cfg->compile_aot)
3405                                         mono_class_compute_gc_descriptor (klass);
3406                         }
3407
3408                         if (size_ins)
3409                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3410                         else
3411                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3412                         return;
3413                 }
3414         }
3415
3416         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3417                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3418                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3419         } else {
3420                 iargs [0] = dest;
3421                 iargs [1] = src;
3422                 if (size_ins)
3423                         iargs [2] = size_ins;
3424                 else
3425                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3426
3427                 memcpy_method = get_memcpy_method ();
3428                 if (memcpy_ins)
3429                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3430                 else
3431                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3432         }
3433 }
3434
3435 static MonoMethod*
3436 get_memset_method (void)
3437 {
3438         static MonoMethod *memset_method = NULL;
3439         if (!memset_method) {
3440                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3441                 if (!memset_method)
3442                         g_error ("Old corlib found. Install a new one");
3443         }
3444         return memset_method;
3445 }
3446
3447 void
3448 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3449 {
3450         MonoInst *iargs [3];
3451         int n;
3452         guint32 align;
3453         MonoMethod *memset_method;
3454         MonoInst *size_ins = NULL;
3455         MonoInst *bzero_ins = NULL;
3456         static MonoMethod *bzero_method;
3457
3458         /* FIXME: Optimize this for the case when dest is an LDADDR */
3459         mono_class_init (klass);
3460         if (mini_is_gsharedvt_klass (klass)) {
3461                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3462                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3463                 if (!bzero_method)
3464                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3465                 g_assert (bzero_method);
3466                 iargs [0] = dest;
3467                 iargs [1] = size_ins;
3468                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3469                 return;
3470         }
3471
3472         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3473
3474         n = mono_class_value_size (klass, &align);
3475
3476         if (n <= sizeof (gpointer) * 8) {
3477                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3478         }
3479         else {
3480                 memset_method = get_memset_method ();
3481                 iargs [0] = dest;
3482                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3483                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3484                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3485         }
3486 }
3487
3488 /*
3489  * emit_get_rgctx:
3490  *
3491  *   Emit IR to return either the this pointer for instance method,
3492  * or the mrgctx for static methods.
3493  */
3494 static MonoInst*
3495 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3496 {
3497         MonoInst *this_ins = NULL;
3498
3499         g_assert (cfg->gshared);
3500
3501         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3502                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3503                         !method->klass->valuetype)
3504                 EMIT_NEW_ARGLOAD (cfg, this_ins, 0);
3505
3506         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3507                 MonoInst *mrgctx_loc, *mrgctx_var;
3508
3509                 g_assert (!this_ins);
3510                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3511
3512                 mrgctx_loc = mono_get_vtable_var (cfg);
3513                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3514
3515                 return mrgctx_var;
3516         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3517                 MonoInst *vtable_loc, *vtable_var;
3518
3519                 g_assert (!this_ins);
3520
3521                 vtable_loc = mono_get_vtable_var (cfg);
3522                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3523
3524                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3525                         MonoInst *mrgctx_var = vtable_var;
3526                         int vtable_reg;
3527
3528                         vtable_reg = alloc_preg (cfg);
3529                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3530                         vtable_var->type = STACK_PTR;
3531                 }
3532
3533                 return vtable_var;
3534         } else {
3535                 MonoInst *ins;
3536                 int vtable_reg;
3537
3538                 vtable_reg = alloc_preg (cfg);
3539                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3540                 return ins;
3541         }
3542 }
3543
3544 static MonoJumpInfoRgctxEntry *
3545 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3546 {
3547         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3548         res->method = method;
3549         res->in_mrgctx = in_mrgctx;
3550         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3551         res->data->type = patch_type;
3552         res->data->data.target = patch_data;
3553         res->info_type = info_type;
3554
3555         return res;
3556 }
3557
3558 static inline MonoInst*
3559 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3560 {
3561         MonoInst *args [16];
3562         MonoInst *call;
3563
3564         // FIXME: No fastpath since the slot is not a compile time constant
3565         args [0] = rgctx;
3566         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3567         if (entry->in_mrgctx)
3568                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3569         else
3570                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3571         return call;
3572 #if 0
3573         /*
3574          * FIXME: This can be called during decompose, which is a problem since it creates
3575          * new bblocks.
3576          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3577          */
3578         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3579         gboolean mrgctx;
3580         MonoBasicBlock *is_null_bb, *end_bb;
3581         MonoInst *res, *ins, *call;
3582         MonoInst *args[16];
3583
3584         slot = mini_get_rgctx_entry_slot (entry);
3585
3586         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3587         index = MONO_RGCTX_SLOT_INDEX (slot);
3588         if (mrgctx)
3589                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3590         for (depth = 0; ; ++depth) {
3591                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3592
3593                 if (index < size - 1)
3594                         break;
3595                 index -= size - 1;
3596         }
3597
3598         NEW_BBLOCK (cfg, end_bb);
3599         NEW_BBLOCK (cfg, is_null_bb);
3600
3601         if (mrgctx) {
3602                 rgctx_reg = rgctx->dreg;
3603         } else {
3604                 rgctx_reg = alloc_preg (cfg);
3605
3606                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3607                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3608                 NEW_BBLOCK (cfg, is_null_bb);
3609
3610                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3611                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3612         }
3613
3614         for (i = 0; i < depth; ++i) {
3615                 int array_reg = alloc_preg (cfg);
3616
3617                 /* load ptr to next array */
3618                 if (mrgctx && i == 0)
3619                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3620                 else
3621                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3622                 rgctx_reg = array_reg;
3623                 /* is the ptr null? */
3624                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3625                 /* if yes, jump to actual trampoline */
3626                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3627         }
3628
3629         /* fetch slot */
3630         val_reg = alloc_preg (cfg);
3631         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3632         /* is the slot null? */
3633         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3634         /* if yes, jump to actual trampoline */
3635         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3636
3637         /* Fastpath */
3638         res_reg = alloc_preg (cfg);
3639         MONO_INST_NEW (cfg, ins, OP_MOVE);
3640         ins->dreg = res_reg;
3641         ins->sreg1 = val_reg;
3642         MONO_ADD_INS (cfg->cbb, ins);
3643         res = ins;
3644         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3645
3646         /* Slowpath */
3647         MONO_START_BB (cfg, is_null_bb);
3648         args [0] = rgctx;
3649         EMIT_NEW_ICONST (cfg, args [1], index);
3650         if (mrgctx)
3651                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3652         else
3653                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3654         MONO_INST_NEW (cfg, ins, OP_MOVE);
3655         ins->dreg = res_reg;
3656         ins->sreg1 = call->dreg;
3657         MONO_ADD_INS (cfg->cbb, ins);
3658         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3659
3660         MONO_START_BB (cfg, end_bb);
3661
3662         return res;
3663 #endif
3664 }
3665
3666 /*
3667  * emit_rgctx_fetch:
3668  *
3669  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3670  * given by RGCTX.
3671  */
3672 static inline MonoInst*
3673 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3674 {
3675         if (cfg->llvm_only)
3676                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3677         else
3678                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3679 }
3680
3681 static MonoInst*
3682 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3683                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3684 {
3685         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);
3686         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3687
3688         return emit_rgctx_fetch (cfg, rgctx, entry);
3689 }
3690
3691 static MonoInst*
3692 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3693                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3694 {
3695         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);
3696         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3697
3698         return emit_rgctx_fetch (cfg, rgctx, entry);
3699 }
3700
3701 static MonoInst*
3702 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3703                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3704 {
3705         MonoJumpInfoGSharedVtCall *call_info;
3706         MonoJumpInfoRgctxEntry *entry;
3707         MonoInst *rgctx;
3708
3709         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3710         call_info->sig = sig;
3711         call_info->method = cmethod;
3712
3713         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);
3714         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3715
3716         return emit_rgctx_fetch (cfg, rgctx, entry);
3717 }
3718
3719 /*
3720  * emit_get_rgctx_virt_method:
3721  *
3722  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3723  */
3724 static MonoInst*
3725 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3726                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3727 {
3728         MonoJumpInfoVirtMethod *info;
3729         MonoJumpInfoRgctxEntry *entry;
3730         MonoInst *rgctx;
3731
3732         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3733         info->klass = klass;
3734         info->method = virt_method;
3735
3736         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);
3737         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3738
3739         return emit_rgctx_fetch (cfg, rgctx, entry);
3740 }
3741
3742 static MonoInst*
3743 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3744                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3745 {
3746         MonoJumpInfoRgctxEntry *entry;
3747         MonoInst *rgctx;
3748
3749         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);
3750         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3751
3752         return emit_rgctx_fetch (cfg, rgctx, entry);
3753 }
3754
3755 /*
3756  * emit_get_rgctx_method:
3757  *
3758  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3759  * normal constants, else emit a load from the rgctx.
3760  */
3761 static MonoInst*
3762 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3763                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3764 {
3765         if (!context_used) {
3766                 MonoInst *ins;
3767
3768                 switch (rgctx_type) {
3769                 case MONO_RGCTX_INFO_METHOD:
3770                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3771                         return ins;
3772                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3773                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3774                         return ins;
3775                 default:
3776                         g_assert_not_reached ();
3777                 }
3778         } else {
3779                 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);
3780                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3781
3782                 return emit_rgctx_fetch (cfg, rgctx, entry);
3783         }
3784 }
3785
3786 static MonoInst*
3787 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3788                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3789 {
3790         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);
3791         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3792
3793         return emit_rgctx_fetch (cfg, rgctx, entry);
3794 }
3795
3796 static int
3797 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3798 {
3799         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3800         MonoRuntimeGenericContextInfoTemplate *template_;
3801         int i, idx;
3802
3803         g_assert (info);
3804
3805         for (i = 0; i < info->num_entries; ++i) {
3806                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3807
3808                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3809                         return i;
3810         }
3811
3812         if (info->num_entries == info->count_entries) {
3813                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3814                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3815
3816                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3817
3818                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3819                 info->entries = new_entries;
3820                 info->count_entries = new_count_entries;
3821         }
3822
3823         idx = info->num_entries;
3824         template_ = &info->entries [idx];
3825         template_->info_type = rgctx_type;
3826         template_->data = data;
3827
3828         info->num_entries ++;
3829
3830         return idx;
3831 }
3832
3833 /*
3834  * emit_get_gsharedvt_info:
3835  *
3836  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3837  */
3838 static MonoInst*
3839 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3840 {
3841         MonoInst *ins;
3842         int idx, dreg;
3843
3844         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3845         /* Load info->entries [idx] */
3846         dreg = alloc_preg (cfg);
3847         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3848
3849         return ins;
3850 }
3851
3852 static MonoInst*
3853 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3854 {
3855         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3856 }
3857
3858 /*
3859  * On return the caller must check @klass for load errors.
3860  */
3861 static void
3862 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3863 {
3864         MonoInst *vtable_arg;
3865         int context_used;
3866
3867         context_used = mini_class_check_context_used (cfg, klass);
3868
3869         if (context_used) {
3870                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3871                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3872         } else {
3873                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3874
3875                 if (!vtable)
3876                         return;
3877                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3878         }
3879
3880         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3881                 MonoInst *ins;
3882
3883                 /*
3884                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3885                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3886                  */
3887                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3888                 ins->sreg1 = vtable_arg->dreg;
3889                 MONO_ADD_INS (cfg->cbb, ins);
3890         } else {
3891                 static int byte_offset = -1;
3892                 static guint8 bitmask;
3893                 int bits_reg, inited_reg;
3894                 MonoBasicBlock *inited_bb;
3895                 MonoInst *args [16];
3896
3897                 if (byte_offset < 0)
3898                         mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3899
3900                 bits_reg = alloc_ireg (cfg);
3901                 inited_reg = alloc_ireg (cfg);
3902
3903                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3904                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3905
3906                 NEW_BBLOCK (cfg, inited_bb);
3907
3908                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3909                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3910
3911                 args [0] = vtable_arg;
3912                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3913
3914                 MONO_START_BB (cfg, inited_bb);
3915         }
3916 }
3917
3918 static void
3919 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3920 {
3921         MonoInst *ins;
3922
3923         if (cfg->gen_seq_points && cfg->method == method) {
3924                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3925                 if (nonempty_stack)
3926                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3927                 MONO_ADD_INS (cfg->cbb, ins);
3928         }
3929 }
3930
3931 static void
3932 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3933 {
3934         if (mini_get_debug_options ()->better_cast_details) {
3935                 int vtable_reg = alloc_preg (cfg);
3936                 int klass_reg = alloc_preg (cfg);
3937                 MonoBasicBlock *is_null_bb = NULL;
3938                 MonoInst *tls_get;
3939                 int to_klass_reg, context_used;
3940
3941                 if (null_check) {
3942                         NEW_BBLOCK (cfg, is_null_bb);
3943
3944                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3945                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3946                 }
3947
3948                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3949                 if (!tls_get) {
3950                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3951                         exit (1);
3952                 }
3953
3954                 MONO_ADD_INS (cfg->cbb, tls_get);
3955                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3956                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3957
3958                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3959
3960                 context_used = mini_class_check_context_used (cfg, klass);
3961                 if (context_used) {
3962                         MonoInst *class_ins;
3963
3964                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3965                         to_klass_reg = class_ins->dreg;
3966                 } else {
3967                         to_klass_reg = alloc_preg (cfg);
3968                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3969                 }
3970                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3971
3972                 if (null_check)
3973                         MONO_START_BB (cfg, is_null_bb);
3974         }
3975 }
3976
3977 static void
3978 reset_cast_details (MonoCompile *cfg)
3979 {
3980         /* Reset the variables holding the cast details */
3981         if (mini_get_debug_options ()->better_cast_details) {
3982                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3983
3984                 MONO_ADD_INS (cfg->cbb, tls_get);
3985                 /* It is enough to reset the from field */
3986                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3987         }
3988 }
3989
3990 /*
3991  * On return the caller must check @array_class for load errors
3992  */
3993 static void
3994 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3995 {
3996         int vtable_reg = alloc_preg (cfg);
3997         int context_used;
3998
3999         context_used = mini_class_check_context_used (cfg, array_class);
4000
4001         save_cast_details (cfg, array_class, obj->dreg, FALSE);
4002
4003         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4004
4005         if (cfg->opt & MONO_OPT_SHARED) {
4006                 int class_reg = alloc_preg (cfg);
4007                 MonoInst *ins;
4008
4009                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4010                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
4011                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
4012         } else if (context_used) {
4013                 MonoInst *vtable_ins;
4014
4015                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
4016                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
4017         } else {
4018                 if (cfg->compile_aot) {
4019                         int vt_reg;
4020                         MonoVTable *vtable;
4021
4022                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4023                                 return;
4024                         vt_reg = alloc_preg (cfg);
4025                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
4026                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
4027                 } else {
4028                         MonoVTable *vtable;
4029                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4030                                 return;
4031                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
4032                 }
4033         }
4034
4035         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
4036
4037         reset_cast_details (cfg);
4038 }
4039
4040 /**
4041  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
4042  * generic code is generated.
4043  */
4044 static MonoInst*
4045 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
4046 {
4047         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
4048
4049         if (context_used) {
4050                 MonoInst *rgctx, *addr;
4051
4052                 /* FIXME: What if the class is shared?  We might not
4053                    have to get the address of the method from the
4054                    RGCTX. */
4055                 addr = emit_get_rgctx_method (cfg, context_used, method,
4056                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4057                 if (cfg->llvm_only && cfg->gsharedvt) {
4058                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4059                 } else {
4060                         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4061
4062                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4063                 }
4064         } else {
4065                 gboolean pass_vtable, pass_mrgctx;
4066                 MonoInst *rgctx_arg = NULL;
4067
4068                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4069                 g_assert (!pass_mrgctx);
4070
4071                 if (pass_vtable) {
4072                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4073
4074                         g_assert (vtable);
4075                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4076                 }
4077
4078                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4079         }
4080 }
4081
4082 static MonoInst*
4083 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
4084 {
4085         MonoInst *add;
4086         int obj_reg;
4087         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
4088         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
4089         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
4090         int rank_reg = alloc_dreg (cfg ,STACK_I4);
4091
4092         obj_reg = sp [0]->dreg;
4093         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4094         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4095
4096         /* FIXME: generics */
4097         g_assert (klass->rank == 0);
4098
4099         // Check rank == 0
4100         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
4101         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4102
4103         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4104         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
4105
4106         if (context_used) {
4107                 MonoInst *element_class;
4108
4109                 /* This assertion is from the unboxcast insn */
4110                 g_assert (klass->rank == 0);
4111
4112                 element_class = emit_get_rgctx_klass (cfg, context_used,
4113                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
4114
4115                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
4116                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4117         } else {
4118                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
4119                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
4120                 reset_cast_details (cfg);
4121         }
4122
4123         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
4124         MONO_ADD_INS (cfg->cbb, add);
4125         add->type = STACK_MP;
4126         add->klass = klass;
4127
4128         return add;
4129 }
4130
4131 static MonoInst*
4132 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
4133 {
4134         MonoInst *addr, *klass_inst, *is_ref, *args[16];
4135         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4136         MonoInst *ins;
4137         int dreg, addr_reg;
4138
4139         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
4140
4141         /* obj */
4142         args [0] = obj;
4143
4144         /* klass */
4145         args [1] = klass_inst;
4146
4147         /* CASTCLASS */
4148         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
4149
4150         NEW_BBLOCK (cfg, is_ref_bb);
4151         NEW_BBLOCK (cfg, is_nullable_bb);
4152         NEW_BBLOCK (cfg, end_bb);
4153         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4154         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4155         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4156
4157         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4158         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4159
4160         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
4161         addr_reg = alloc_dreg (cfg, STACK_MP);
4162
4163         /* Non-ref case */
4164         /* UNBOX */
4165         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
4166         MONO_ADD_INS (cfg->cbb, addr);
4167
4168         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4169
4170         /* Ref case */
4171         MONO_START_BB (cfg, is_ref_bb);
4172
4173         /* Save the ref to a temporary */
4174         dreg = alloc_ireg (cfg);
4175         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
4176         addr->dreg = addr_reg;
4177         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
4178         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4179
4180         /* Nullable case */
4181         MONO_START_BB (cfg, is_nullable_bb);
4182
4183         {
4184                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
4185                 MonoInst *unbox_call;
4186                 MonoMethodSignature *unbox_sig;
4187
4188                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4189                 unbox_sig->ret = &klass->byval_arg;
4190                 unbox_sig->param_count = 1;
4191                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
4192
4193                 if (cfg->llvm_only)
4194                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
4195                 else
4196                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
4197
4198                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
4199                 addr->dreg = addr_reg;
4200         }
4201
4202         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4203
4204         /* End */
4205         MONO_START_BB (cfg, end_bb);
4206
4207         /* LDOBJ */
4208         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
4209
4210         return ins;
4211 }
4212
4213 /*
4214  * Returns NULL and set the cfg exception on error.
4215  */
4216 static MonoInst*
4217 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4218 {
4219         MonoInst *iargs [2];
4220         void *alloc_ftn;
4221
4222         if (context_used) {
4223                 MonoInst *data;
4224                 MonoRgctxInfoType rgctx_info;
4225                 MonoInst *iargs [2];
4226                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4227
4228                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4229
4230                 if (cfg->opt & MONO_OPT_SHARED)
4231                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4232                 else
4233                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4234                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4235
4236                 if (cfg->opt & MONO_OPT_SHARED) {
4237                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4238                         iargs [1] = data;
4239                         alloc_ftn = mono_object_new;
4240                 } else {
4241                         iargs [0] = data;
4242                         alloc_ftn = mono_object_new_specific;
4243                 }
4244
4245                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4246                         if (known_instance_size) {
4247                                 int size = mono_class_instance_size (klass);
4248                                 if (size < sizeof (MonoObject))
4249                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4250
4251                                 EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4252                         }
4253                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4254                 }
4255
4256                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4257         }
4258
4259         if (cfg->opt & MONO_OPT_SHARED) {
4260                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4261                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4262
4263                 alloc_ftn = mono_object_new;
4264         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
4265                 /* This happens often in argument checking code, eg. throw new FooException... */
4266                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4267                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4268                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4269         } else {
4270                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4271                 MonoMethod *managed_alloc = NULL;
4272                 gboolean pass_lw;
4273
4274                 if (!vtable) {
4275                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4276                         cfg->exception_ptr = klass;
4277                         return NULL;
4278                 }
4279
4280                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4281
4282                 if (managed_alloc) {
4283                         int size = mono_class_instance_size (klass);
4284                         if (size < sizeof (MonoObject))
4285                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4286
4287                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4288                         EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4289                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4290                 }
4291                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4292                 if (pass_lw) {
4293                         guint32 lw = vtable->klass->instance_size;
4294                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4295                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4296                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4297                 }
4298                 else {
4299                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4300                 }
4301         }
4302
4303         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4304 }
4305
4306 /*
4307  * Returns NULL and set the cfg exception on error.
4308  */
4309 static MonoInst*
4310 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4311 {
4312         MonoInst *alloc, *ins;
4313
4314         if (mono_class_is_nullable (klass)) {
4315                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4316
4317                 if (context_used) {
4318                         if (cfg->llvm_only && cfg->gsharedvt) {
4319                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4320                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4321                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4322                         } else {
4323                                 /* FIXME: What if the class is shared?  We might not
4324                                    have to get the method address from the RGCTX. */
4325                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4326                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4327                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4328
4329                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4330                         }
4331                 } else {
4332                         gboolean pass_vtable, pass_mrgctx;
4333                         MonoInst *rgctx_arg = NULL;
4334
4335                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4336                         g_assert (!pass_mrgctx);
4337
4338                         if (pass_vtable) {
4339                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4340
4341                                 g_assert (vtable);
4342                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4343                         }
4344
4345                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4346                 }
4347         }
4348
4349         if (mini_is_gsharedvt_klass (klass)) {
4350                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4351                 MonoInst *res, *is_ref, *src_var, *addr;
4352                 int dreg;
4353
4354                 dreg = alloc_ireg (cfg);
4355
4356                 NEW_BBLOCK (cfg, is_ref_bb);
4357                 NEW_BBLOCK (cfg, is_nullable_bb);
4358                 NEW_BBLOCK (cfg, end_bb);
4359                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4360                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4361                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4362
4363                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4364                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4365
4366                 /* Non-ref case */
4367                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4368                 if (!alloc)
4369                         return NULL;
4370                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4371                 ins->opcode = OP_STOREV_MEMBASE;
4372
4373                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4374                 res->type = STACK_OBJ;
4375                 res->klass = klass;
4376                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4377
4378                 /* Ref case */
4379                 MONO_START_BB (cfg, is_ref_bb);
4380
4381                 /* val is a vtype, so has to load the value manually */
4382                 src_var = get_vreg_to_inst (cfg, val->dreg);
4383                 if (!src_var)
4384                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4385                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4386                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4387                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4388
4389                 /* Nullable case */
4390                 MONO_START_BB (cfg, is_nullable_bb);
4391
4392                 {
4393                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4394                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4395                         MonoInst *box_call;
4396                         MonoMethodSignature *box_sig;
4397
4398                         /*
4399                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4400                          * construct that method at JIT time, so have to do things by hand.
4401                          */
4402                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4403                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4404                         box_sig->param_count = 1;
4405                         box_sig->params [0] = &klass->byval_arg;
4406
4407                         if (cfg->llvm_only)
4408                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4409                         else
4410                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4411                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4412                         res->type = STACK_OBJ;
4413                         res->klass = klass;
4414                 }
4415
4416                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4417
4418                 MONO_START_BB (cfg, end_bb);
4419
4420                 return res;
4421         } else {
4422                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4423                 if (!alloc)
4424                         return NULL;
4425
4426                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4427                 return alloc;
4428         }
4429 }
4430
4431 static gboolean
4432 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4433 {
4434         int i;
4435         MonoGenericContainer *container;
4436         MonoGenericInst *ginst;
4437
4438         if (klass->generic_class) {
4439                 container = klass->generic_class->container_class->generic_container;
4440                 ginst = klass->generic_class->context.class_inst;
4441         } else if (klass->generic_container && context_used) {
4442                 container = klass->generic_container;
4443                 ginst = container->context.class_inst;
4444         } else {
4445                 return FALSE;
4446         }
4447
4448         for (i = 0; i < container->type_argc; ++i) {
4449                 MonoType *type;
4450                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4451                         continue;
4452                 type = ginst->type_argv [i];
4453                 if (mini_type_is_reference (type))
4454                         return TRUE;
4455         }
4456         return FALSE;
4457 }
4458
4459 static GHashTable* direct_icall_type_hash;
4460
4461 static gboolean
4462 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4463 {
4464         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4465         if (!direct_icalls_enabled (cfg))
4466                 return FALSE;
4467
4468         /*
4469          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4470          * Whitelist a few icalls for now.
4471          */
4472         if (!direct_icall_type_hash) {
4473                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4474
4475                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4476                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4477                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4478                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4479                 mono_memory_barrier ();
4480                 direct_icall_type_hash = h;
4481         }
4482
4483         if (cmethod->klass == mono_defaults.math_class)
4484                 return TRUE;
4485         /* No locking needed */
4486         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4487                 return TRUE;
4488         return FALSE;
4489 }
4490
4491 #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)
4492
4493 static MonoInst*
4494 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4495 {
4496         MonoMethod *mono_castclass;
4497         MonoInst *res;
4498
4499         mono_castclass = mono_marshal_get_castclass_with_cache ();
4500
4501         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4502         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4503         reset_cast_details (cfg);
4504
4505         return res;
4506 }
4507
4508 static int
4509 get_castclass_cache_idx (MonoCompile *cfg)
4510 {
4511         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4512         cfg->castclass_cache_index ++;
4513         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4514 }
4515
4516 static MonoInst*
4517 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4518 {
4519         MonoInst *args [3];
4520         int idx;
4521
4522         /* obj */
4523         args [0] = obj;
4524
4525         /* klass */
4526         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4527
4528         /* inline cache*/
4529         idx = get_castclass_cache_idx (cfg);
4530         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4531
4532         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4533         return emit_castclass_with_cache (cfg, klass, args);
4534 }
4535
4536 /*
4537  * Returns NULL and set the cfg exception on error.
4538  */
4539 static MonoInst*
4540 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, guint8 *ip, int *inline_costs)
4541 {
4542         MonoBasicBlock *is_null_bb;
4543         int obj_reg = src->dreg;
4544         int vtable_reg = alloc_preg (cfg);
4545         int context_used;
4546         MonoInst *klass_inst = NULL, *res;
4547
4548         context_used = mini_class_check_context_used (cfg, klass);
4549
4550         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4551                 res = emit_castclass_with_cache_nonshared (cfg, src, klass);
4552                 (*inline_costs) += 2;
4553                 return res;
4554         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4555                 MonoMethod *mono_castclass;
4556                 MonoInst *iargs [1];
4557                 int costs;
4558
4559                 mono_castclass = mono_marshal_get_castclass (klass);
4560                 iargs [0] = src;
4561
4562                 save_cast_details (cfg, klass, src->dreg, TRUE);
4563                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4564                                                            iargs, ip, cfg->real_offset, TRUE);
4565                 reset_cast_details (cfg);
4566                 CHECK_CFG_EXCEPTION;
4567                 g_assert (costs > 0);
4568
4569                 cfg->real_offset += 5;
4570
4571                 (*inline_costs) += costs;
4572
4573                 return src;
4574         }
4575
4576         if (context_used) {
4577                 MonoInst *args [3];
4578
4579                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4580                         MonoInst *cache_ins;
4581
4582                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4583
4584                         /* obj */
4585                         args [0] = src;
4586
4587                         /* klass - it's the second element of the cache entry*/
4588                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4589
4590                         /* cache */
4591                         args [2] = cache_ins;
4592
4593                         return emit_castclass_with_cache (cfg, klass, args);
4594                 }
4595
4596                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4597         }
4598
4599         NEW_BBLOCK (cfg, is_null_bb);
4600
4601         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4602         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4603
4604         save_cast_details (cfg, klass, obj_reg, FALSE);
4605
4606         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4607                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4608                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4609         } else {
4610                 int klass_reg = alloc_preg (cfg);
4611
4612                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4613
4614                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4615                         /* the remoting code is broken, access the class for now */
4616                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4617                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4618                                 if (!vt) {
4619                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4620                                         cfg->exception_ptr = klass;
4621                                         return NULL;
4622                                 }
4623                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4624                         } else {
4625                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4626                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4627                         }
4628                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4629                 } else {
4630                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4631                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4632                 }
4633         }
4634
4635         MONO_START_BB (cfg, is_null_bb);
4636
4637         reset_cast_details (cfg);
4638
4639         return src;
4640
4641 exception_exit:
4642         return NULL;
4643 }
4644
4645 /*
4646  * Returns NULL and set the cfg exception on error.
4647  */
4648 static MonoInst*
4649 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4650 {
4651         MonoInst *ins;
4652         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4653         int obj_reg = src->dreg;
4654         int vtable_reg = alloc_preg (cfg);
4655         int res_reg = alloc_ireg_ref (cfg);
4656         MonoInst *klass_inst = NULL;
4657
4658         if (context_used) {
4659                 MonoInst *args [3];
4660
4661                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4662                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4663                         MonoInst *cache_ins;
4664
4665                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4666
4667                         /* obj */
4668                         args [0] = src;
4669
4670                         /* klass - it's the second element of the cache entry*/
4671                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4672
4673                         /* cache */
4674                         args [2] = cache_ins;
4675
4676                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4677                 }
4678
4679                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4680         }
4681
4682         NEW_BBLOCK (cfg, is_null_bb);
4683         NEW_BBLOCK (cfg, false_bb);
4684         NEW_BBLOCK (cfg, end_bb);
4685
4686         /* Do the assignment at the beginning, so the other assignment can be if converted */
4687         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4688         ins->type = STACK_OBJ;
4689         ins->klass = klass;
4690
4691         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4692         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4693
4694         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4695
4696         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4697                 g_assert (!context_used);
4698                 /* the is_null_bb target simply copies the input register to the output */
4699                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4700         } else {
4701                 int klass_reg = alloc_preg (cfg);
4702
4703                 if (klass->rank) {
4704                         int rank_reg = alloc_preg (cfg);
4705                         int eclass_reg = alloc_preg (cfg);
4706
4707                         g_assert (!context_used);
4708                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4709                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4710                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4711                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4712                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4713                         if (klass->cast_class == mono_defaults.object_class) {
4714                                 int parent_reg = alloc_preg (cfg);
4715                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4716                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4717                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4718                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4719                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4720                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4721                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4722                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4723                         } else if (klass->cast_class == mono_defaults.enum_class) {
4724                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4725                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4726                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4727                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4728                         } else {
4729                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4730                                         /* Check that the object is a vector too */
4731                                         int bounds_reg = alloc_preg (cfg);
4732                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4733                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4734                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4735                                 }
4736
4737                                 /* the is_null_bb target simply copies the input register to the output */
4738                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4739                         }
4740                 } else if (mono_class_is_nullable (klass)) {
4741                         g_assert (!context_used);
4742                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4743                         /* the is_null_bb target simply copies the input register to the output */
4744                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4745                 } else {
4746                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4747                                 g_assert (!context_used);
4748                                 /* the remoting code is broken, access the class for now */
4749                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4750                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4751                                         if (!vt) {
4752                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4753                                                 cfg->exception_ptr = klass;
4754                                                 return NULL;
4755                                         }
4756                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4757                                 } else {
4758                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4759                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4760                                 }
4761                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4762                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4763                         } else {
4764                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4765                                 /* the is_null_bb target simply copies the input register to the output */
4766                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4767                         }
4768                 }
4769         }
4770
4771         MONO_START_BB (cfg, false_bb);
4772
4773         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4774         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4775
4776         MONO_START_BB (cfg, is_null_bb);
4777
4778         MONO_START_BB (cfg, end_bb);
4779
4780         return ins;
4781 }
4782
4783 static MonoInst*
4784 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4785 {
4786         /* This opcode takes as input an object reference and a class, and returns:
4787         0) if the object is an instance of the class,
4788         1) if the object is not instance of the class,
4789         2) if the object is a proxy whose type cannot be determined */
4790
4791         MonoInst *ins;
4792 #ifndef DISABLE_REMOTING
4793         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4794 #else
4795         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4796 #endif
4797         int obj_reg = src->dreg;
4798         int dreg = alloc_ireg (cfg);
4799         int tmp_reg;
4800 #ifndef DISABLE_REMOTING
4801         int klass_reg = alloc_preg (cfg);
4802 #endif
4803
4804         NEW_BBLOCK (cfg, true_bb);
4805         NEW_BBLOCK (cfg, false_bb);
4806         NEW_BBLOCK (cfg, end_bb);
4807 #ifndef DISABLE_REMOTING
4808         NEW_BBLOCK (cfg, false2_bb);
4809         NEW_BBLOCK (cfg, no_proxy_bb);
4810 #endif
4811
4812         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4813         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4814
4815         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4816 #ifndef DISABLE_REMOTING
4817                 NEW_BBLOCK (cfg, interface_fail_bb);
4818 #endif
4819
4820                 tmp_reg = alloc_preg (cfg);
4821                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4822 #ifndef DISABLE_REMOTING
4823                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4824                 MONO_START_BB (cfg, interface_fail_bb);
4825                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4826
4827                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4828
4829                 tmp_reg = alloc_preg (cfg);
4830                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4831                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4832                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4833 #else
4834                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4835 #endif
4836         } else {
4837 #ifndef DISABLE_REMOTING
4838                 tmp_reg = alloc_preg (cfg);
4839                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4840                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4841
4842                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4843                 tmp_reg = alloc_preg (cfg);
4844                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4845                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4846
4847                 tmp_reg = alloc_preg (cfg);
4848                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4849                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4850                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4851
4852                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4853                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4854
4855                 MONO_START_BB (cfg, no_proxy_bb);
4856
4857                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4858 #else
4859                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4860 #endif
4861         }
4862
4863         MONO_START_BB (cfg, false_bb);
4864
4865         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4866         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4867
4868 #ifndef DISABLE_REMOTING
4869         MONO_START_BB (cfg, false2_bb);
4870
4871         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4872         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4873 #endif
4874
4875         MONO_START_BB (cfg, true_bb);
4876
4877         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4878
4879         MONO_START_BB (cfg, end_bb);
4880
4881         /* FIXME: */
4882         MONO_INST_NEW (cfg, ins, OP_ICONST);
4883         ins->dreg = dreg;
4884         ins->type = STACK_I4;
4885
4886         return ins;
4887 }
4888
4889 static MonoInst*
4890 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4891 {
4892         /* This opcode takes as input an object reference and a class, and returns:
4893         0) if the object is an instance of the class,
4894         1) if the object is a proxy whose type cannot be determined
4895         an InvalidCastException exception is thrown otherwhise*/
4896
4897         MonoInst *ins;
4898 #ifndef DISABLE_REMOTING
4899         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4900 #else
4901         MonoBasicBlock *ok_result_bb;
4902 #endif
4903         int obj_reg = src->dreg;
4904         int dreg = alloc_ireg (cfg);
4905         int tmp_reg = alloc_preg (cfg);
4906
4907 #ifndef DISABLE_REMOTING
4908         int klass_reg = alloc_preg (cfg);
4909         NEW_BBLOCK (cfg, end_bb);
4910 #endif
4911
4912         NEW_BBLOCK (cfg, ok_result_bb);
4913
4914         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4915         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4916
4917         save_cast_details (cfg, klass, obj_reg, FALSE);
4918
4919         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4920 #ifndef DISABLE_REMOTING
4921                 NEW_BBLOCK (cfg, interface_fail_bb);
4922
4923                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4924                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4925                 MONO_START_BB (cfg, interface_fail_bb);
4926                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4927
4928                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4929
4930                 tmp_reg = alloc_preg (cfg);
4931                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4932                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4933                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4934
4935                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4936                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4937 #else
4938                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4939                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4940                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4941 #endif
4942         } else {
4943 #ifndef DISABLE_REMOTING
4944                 NEW_BBLOCK (cfg, no_proxy_bb);
4945
4946                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4947                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4948                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4949
4950                 tmp_reg = alloc_preg (cfg);
4951                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4952                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4953
4954                 tmp_reg = alloc_preg (cfg);
4955                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4956                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4957                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4958
4959                 NEW_BBLOCK (cfg, fail_1_bb);
4960
4961                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4962
4963                 MONO_START_BB (cfg, fail_1_bb);
4964
4965                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4966                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4967
4968                 MONO_START_BB (cfg, no_proxy_bb);
4969
4970                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4971 #else
4972                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4973 #endif
4974         }
4975
4976         MONO_START_BB (cfg, ok_result_bb);
4977
4978         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4979
4980 #ifndef DISABLE_REMOTING
4981         MONO_START_BB (cfg, end_bb);
4982 #endif
4983
4984         /* FIXME: */
4985         MONO_INST_NEW (cfg, ins, OP_ICONST);
4986         ins->dreg = dreg;
4987         ins->type = STACK_I4;
4988
4989         return ins;
4990 }
4991
4992 static G_GNUC_UNUSED MonoInst*
4993 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4994 {
4995         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4996         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4997         gboolean is_i4;
4998
4999         switch (enum_type->type) {
5000         case MONO_TYPE_I8:
5001         case MONO_TYPE_U8:
5002 #if SIZEOF_REGISTER == 8
5003         case MONO_TYPE_I:
5004         case MONO_TYPE_U:
5005 #endif
5006                 is_i4 = FALSE;
5007                 break;
5008         default:
5009                 is_i4 = TRUE;
5010                 break;
5011         }
5012
5013         {
5014                 MonoInst *load, *and_, *cmp, *ceq;
5015                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5016                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5017                 int dest_reg = alloc_ireg (cfg);
5018
5019                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
5020                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
5021                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
5022                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
5023
5024                 ceq->type = STACK_I4;
5025
5026                 if (!is_i4) {
5027                         load = mono_decompose_opcode (cfg, load);
5028                         and_ = mono_decompose_opcode (cfg, and_);
5029                         cmp = mono_decompose_opcode (cfg, cmp);
5030                         ceq = mono_decompose_opcode (cfg, ceq);
5031                 }
5032
5033                 return ceq;
5034         }
5035 }
5036
5037 /*
5038  * Returns NULL and set the cfg exception on error.
5039  */
5040 static G_GNUC_UNUSED MonoInst*
5041 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5042 {
5043         MonoInst *ptr;
5044         int dreg;
5045         gpointer trampoline;
5046         MonoInst *obj, *method_ins, *tramp_ins;
5047         MonoDomain *domain;
5048         guint8 **code_slot;
5049
5050         if (virtual_ && !cfg->llvm_only) {
5051                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5052                 g_assert (invoke);
5053
5054                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5055                         return NULL;
5056         }
5057
5058         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5059         if (!obj)
5060                 return NULL;
5061
5062         if (cfg->llvm_only) {
5063                 MonoInst *args [16];
5064
5065                 /*
5066                  * If the method to be called needs an rgctx, we can't fall back to mono_delegate_ctor (), since it might receive
5067                  * the address of a gshared method. So use a JIT icall.
5068                  * FIXME: Optimize this.
5069                  */
5070                 args [0] = obj;
5071                 args [1] = target;
5072                 args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5073                 mono_emit_jit_icall (cfg, virtual_ ? mono_init_delegate_virtual : mono_init_delegate, args);
5074
5075                 return obj;
5076         }
5077
5078         /* Inline the contents of mono_delegate_ctor */
5079
5080         /* Set target field */
5081         /* Optimize away setting of NULL target */
5082         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5083                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5084                 if (cfg->gen_write_barriers) {
5085                         dreg = alloc_preg (cfg);
5086                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5087                         emit_write_barrier (cfg, ptr, target);
5088                 }
5089         }
5090
5091         /* Set method field */
5092         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5093         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5094
5095         /*
5096          * To avoid looking up the compiled code belonging to the target method
5097          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5098          * store it, and we fill it after the method has been compiled.
5099          */
5100         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5101                 MonoInst *code_slot_ins;
5102
5103                 if (context_used) {
5104                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5105                 } else {
5106                         domain = mono_domain_get ();
5107                         mono_domain_lock (domain);
5108                         if (!domain_jit_info (domain)->method_code_hash)
5109                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5110                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5111                         if (!code_slot) {
5112                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5113                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5114                         }
5115                         mono_domain_unlock (domain);
5116
5117                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5118                 }
5119                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5120         }
5121
5122         if (cfg->compile_aot) {
5123                 MonoDelegateClassMethodPair *del_tramp;
5124
5125                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5126                 del_tramp->klass = klass;
5127                 del_tramp->method = context_used ? NULL : method;
5128                 del_tramp->is_virtual = virtual_;
5129                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5130         } else {
5131                 if (virtual_)
5132                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5133                 else
5134                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5135                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5136         }
5137
5138         /* Set invoke_impl field */
5139         if (virtual_) {
5140                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5141         } else {
5142                 dreg = alloc_preg (cfg);
5143                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5144                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5145
5146                 dreg = alloc_preg (cfg);
5147                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5148                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5149         }
5150
5151         dreg = alloc_preg (cfg);
5152         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5153         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5154
5155         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5156
5157         return obj;
5158 }
5159
5160 static MonoInst*
5161 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5162 {
5163         MonoJitICallInfo *info;
5164
5165         /* Need to register the icall so it gets an icall wrapper */
5166         info = mono_get_array_new_va_icall (rank);
5167
5168         cfg->flags |= MONO_CFG_HAS_VARARGS;
5169
5170         /* mono_array_new_va () needs a vararg calling convention */
5171         cfg->disable_llvm = TRUE;
5172
5173         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5174         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5175 }
5176
5177 /*
5178  * handle_constrained_gsharedvt_call:
5179  *
5180  *   Handle constrained calls where the receiver is a gsharedvt type.
5181  * Return the instruction representing the call. Set the cfg exception on failure.
5182  */
5183 static MonoInst*
5184 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5185                                                                    gboolean *ref_emit_widen)
5186 {
5187         MonoInst *ins = NULL;
5188         gboolean emit_widen = *ref_emit_widen;
5189
5190         /*
5191          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5192          * 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
5193          * pack the arguments into an array, and do the rest of the work in in an icall.
5194          */
5195         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5196                 (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)) &&
5197                 (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]))))) {
5198                 MonoInst *args [16];
5199
5200                 /*
5201                  * This case handles calls to
5202                  * - object:ToString()/Equals()/GetHashCode(),
5203                  * - System.IComparable<T>:CompareTo()
5204                  * - System.IEquatable<T>:Equals ()
5205                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5206                  */
5207
5208                 args [0] = sp [0];
5209                 if (mono_method_check_context_used (cmethod))
5210                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5211                 else
5212                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5213                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5214
5215                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5216                 if (fsig->hasthis && fsig->param_count) {
5217                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5218                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5219                         ins->dreg = alloc_preg (cfg);
5220                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5221                         MONO_ADD_INS (cfg->cbb, ins);
5222                         args [4] = ins;
5223
5224                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5225                                 int addr_reg, deref_arg_reg;
5226
5227                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5228                                 deref_arg_reg = alloc_preg (cfg);
5229                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5230                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5231
5232                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5233                                 addr_reg = ins->dreg;
5234                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5235                         } else {
5236                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5237                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5238                         }
5239                 } else {
5240                         EMIT_NEW_ICONST (cfg, args [3], 0);
5241                         EMIT_NEW_ICONST (cfg, args [4], 0);
5242                 }
5243                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5244                 emit_widen = FALSE;
5245
5246                 if (mini_is_gsharedvt_type (fsig->ret)) {
5247                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5248                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5249                         MonoInst *add;
5250
5251                         /* Unbox */
5252                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5253                         MONO_ADD_INS (cfg->cbb, add);
5254                         /* Load value */
5255                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5256                         MONO_ADD_INS (cfg->cbb, ins);
5257                         /* ins represents the call result */
5258                 }
5259         } else {
5260                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5261         }
5262
5263         *ref_emit_widen = emit_widen;
5264
5265         return ins;
5266
5267  exception_exit:
5268         return NULL;
5269 }
5270
5271 static void
5272 mono_emit_load_got_addr (MonoCompile *cfg)
5273 {
5274         MonoInst *getaddr, *dummy_use;
5275
5276         if (!cfg->got_var || cfg->got_var_allocated)
5277                 return;
5278
5279         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5280         getaddr->cil_code = cfg->header->code;
5281         getaddr->dreg = cfg->got_var->dreg;
5282
5283         /* Add it to the start of the first bblock */
5284         if (cfg->bb_entry->code) {
5285                 getaddr->next = cfg->bb_entry->code;
5286                 cfg->bb_entry->code = getaddr;
5287         }
5288         else
5289                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5290
5291         cfg->got_var_allocated = TRUE;
5292
5293         /*
5294          * Add a dummy use to keep the got_var alive, since real uses might
5295          * only be generated by the back ends.
5296          * Add it to end_bblock, so the variable's lifetime covers the whole
5297          * method.
5298          * It would be better to make the usage of the got var explicit in all
5299          * cases when the backend needs it (i.e. calls, throw etc.), so this
5300          * wouldn't be needed.
5301          */
5302         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5303         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5304 }
5305
5306 static int inline_limit;
5307 static gboolean inline_limit_inited;
5308
5309 static gboolean
5310 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5311 {
5312         MonoMethodHeaderSummary header;
5313         MonoVTable *vtable;
5314 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5315         MonoMethodSignature *sig = mono_method_signature (method);
5316         int i;
5317 #endif
5318
5319         if (cfg->disable_inline)
5320                 return FALSE;
5321         if (cfg->gshared)
5322                 return FALSE;
5323
5324         if (cfg->inline_depth > 10)
5325                 return FALSE;
5326
5327         if (!mono_method_get_header_summary (method, &header))
5328                 return FALSE;
5329
5330         /*runtime, icall and pinvoke are checked by summary call*/
5331         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5332             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5333             (mono_class_is_marshalbyref (method->klass)) ||
5334             header.has_clauses)
5335                 return FALSE;
5336
5337         /* also consider num_locals? */
5338         /* Do the size check early to avoid creating vtables */
5339         if (!inline_limit_inited) {
5340                 if (g_getenv ("MONO_INLINELIMIT"))
5341                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5342                 else
5343                         inline_limit = INLINE_LENGTH_LIMIT;
5344                 inline_limit_inited = TRUE;
5345         }
5346         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5347                 return FALSE;
5348
5349         /*
5350          * if we can initialize the class of the method right away, we do,
5351          * otherwise we don't allow inlining if the class needs initialization,
5352          * since it would mean inserting a call to mono_runtime_class_init()
5353          * inside the inlined code
5354          */
5355         if (!(cfg->opt & MONO_OPT_SHARED)) {
5356                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5357                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5358                         vtable = mono_class_vtable (cfg->domain, method->klass);
5359                         if (!vtable)
5360                                 return FALSE;
5361                         if (!cfg->compile_aot)
5362                                 mono_runtime_class_init (vtable);
5363                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5364                         if (cfg->run_cctors && method->klass->has_cctor) {
5365                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5366                                 if (!method->klass->runtime_info)
5367                                         /* No vtable created yet */
5368                                         return FALSE;
5369                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5370                                 if (!vtable)
5371                                         return FALSE;
5372                                 /* This makes so that inline cannot trigger */
5373                                 /* .cctors: too many apps depend on them */
5374                                 /* running with a specific order... */
5375                                 if (! vtable->initialized)
5376                                         return FALSE;
5377                                 mono_runtime_class_init (vtable);
5378                         }
5379                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5380                         if (!method->klass->runtime_info)
5381                                 /* No vtable created yet */
5382                                 return FALSE;
5383                         vtable = mono_class_vtable (cfg->domain, method->klass);
5384                         if (!vtable)
5385                                 return FALSE;
5386                         if (!vtable->initialized)
5387                                 return FALSE;
5388                 }
5389         } else {
5390                 /*
5391                  * If we're compiling for shared code
5392                  * the cctor will need to be run at aot method load time, for example,
5393                  * or at the end of the compilation of the inlining method.
5394                  */
5395                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5396                         return FALSE;
5397         }
5398
5399 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5400         if (mono_arch_is_soft_float ()) {
5401                 /* FIXME: */
5402                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5403                         return FALSE;
5404                 for (i = 0; i < sig->param_count; ++i)
5405                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5406                                 return FALSE;
5407         }
5408 #endif
5409
5410         if (g_list_find (cfg->dont_inline, method))
5411                 return FALSE;
5412
5413         return TRUE;
5414 }
5415
5416 static gboolean
5417 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5418 {
5419         if (!cfg->compile_aot) {
5420                 g_assert (vtable);
5421                 if (vtable->initialized)
5422                         return FALSE;
5423         }
5424
5425         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5426                 if (cfg->method == method)
5427                         return FALSE;
5428         }
5429
5430         if (!mono_class_needs_cctor_run (klass, method))
5431                 return FALSE;
5432
5433         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5434                 /* The initialization is already done before the method is called */
5435                 return FALSE;
5436
5437         return TRUE;
5438 }
5439
5440 static MonoInst*
5441 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5442 {
5443         MonoInst *ins;
5444         guint32 size;
5445         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5446         int context_used;
5447
5448         if (mini_is_gsharedvt_variable_klass (klass)) {
5449                 size = -1;
5450         } else {
5451                 mono_class_init (klass);
5452                 size = mono_class_array_element_size (klass);
5453         }
5454
5455         mult_reg = alloc_preg (cfg);
5456         array_reg = arr->dreg;
5457         index_reg = index->dreg;
5458
5459 #if SIZEOF_REGISTER == 8
5460         /* The array reg is 64 bits but the index reg is only 32 */
5461         if (COMPILE_LLVM (cfg)) {
5462                 /* Not needed */
5463                 index2_reg = index_reg;
5464         } else {
5465                 index2_reg = alloc_preg (cfg);
5466                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5467         }
5468 #else
5469         if (index->type == STACK_I8) {
5470                 index2_reg = alloc_preg (cfg);
5471                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5472         } else {
5473                 index2_reg = index_reg;
5474         }
5475 #endif
5476
5477         if (bcheck)
5478                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5479
5480 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5481         if (size == 1 || size == 2 || size == 4 || size == 8) {
5482                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5483
5484                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5485                 ins->klass = mono_class_get_element_class (klass);
5486                 ins->type = STACK_MP;
5487
5488                 return ins;
5489         }
5490 #endif
5491
5492         add_reg = alloc_ireg_mp (cfg);
5493
5494         if (size == -1) {
5495                 MonoInst *rgctx_ins;
5496
5497                 /* gsharedvt */
5498                 g_assert (cfg->gshared);
5499                 context_used = mini_class_check_context_used (cfg, klass);
5500                 g_assert (context_used);
5501                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5502                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5503         } else {
5504                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5505         }
5506         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5507         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5508         ins->klass = mono_class_get_element_class (klass);
5509         ins->type = STACK_MP;
5510         MONO_ADD_INS (cfg->cbb, ins);
5511
5512         return ins;
5513 }
5514
5515 static MonoInst*
5516 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5517 {
5518         int bounds_reg = alloc_preg (cfg);
5519         int add_reg = alloc_ireg_mp (cfg);
5520         int mult_reg = alloc_preg (cfg);
5521         int mult2_reg = alloc_preg (cfg);
5522         int low1_reg = alloc_preg (cfg);
5523         int low2_reg = alloc_preg (cfg);
5524         int high1_reg = alloc_preg (cfg);
5525         int high2_reg = alloc_preg (cfg);
5526         int realidx1_reg = alloc_preg (cfg);
5527         int realidx2_reg = alloc_preg (cfg);
5528         int sum_reg = alloc_preg (cfg);
5529         int index1, index2, tmpreg;
5530         MonoInst *ins;
5531         guint32 size;
5532
5533         mono_class_init (klass);
5534         size = mono_class_array_element_size (klass);
5535
5536         index1 = index_ins1->dreg;
5537         index2 = index_ins2->dreg;
5538
5539 #if SIZEOF_REGISTER == 8
5540         /* The array reg is 64 bits but the index reg is only 32 */
5541         if (COMPILE_LLVM (cfg)) {
5542                 /* Not needed */
5543         } else {
5544                 tmpreg = alloc_preg (cfg);
5545                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5546                 index1 = tmpreg;
5547                 tmpreg = alloc_preg (cfg);
5548                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5549                 index2 = tmpreg;
5550         }
5551 #else
5552         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5553         tmpreg = -1;
5554 #endif
5555
5556         /* range checking */
5557         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5558                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5559
5560         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5561                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5562         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5563         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5564                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5565         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5566         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5567
5568         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5569                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5570         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5571         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5572                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5573         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5574         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5575
5576         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5577         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5578         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5579         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5580         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5581
5582         ins->type = STACK_MP;
5583         ins->klass = klass;
5584         MONO_ADD_INS (cfg->cbb, ins);
5585
5586         return ins;
5587 }
5588
5589 static MonoInst*
5590 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5591 {
5592         int rank;
5593         MonoInst *addr;
5594         MonoMethod *addr_method;
5595         int element_size;
5596         MonoClass *eclass = cmethod->klass->element_class;
5597
5598         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5599
5600         if (rank == 1)
5601                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5602
5603         /* emit_ldelema_2 depends on OP_LMUL */
5604         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5605                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5606         }
5607
5608         if (mini_is_gsharedvt_variable_klass (eclass))
5609                 element_size = 0;
5610         else
5611                 element_size = mono_class_array_element_size (eclass);
5612         addr_method = mono_marshal_get_array_address (rank, element_size);
5613         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5614
5615         return addr;
5616 }
5617
5618 static MonoBreakPolicy
5619 always_insert_breakpoint (MonoMethod *method)
5620 {
5621         return MONO_BREAK_POLICY_ALWAYS;
5622 }
5623
5624 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5625
5626 /**
5627  * mono_set_break_policy:
5628  * policy_callback: the new callback function
5629  *
5630  * Allow embedders to decide wherther to actually obey breakpoint instructions
5631  * (both break IL instructions and Debugger.Break () method calls), for example
5632  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5633  * untrusted or semi-trusted code.
5634  *
5635  * @policy_callback will be called every time a break point instruction needs to
5636  * be inserted with the method argument being the method that calls Debugger.Break()
5637  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5638  * if it wants the breakpoint to not be effective in the given method.
5639  * #MONO_BREAK_POLICY_ALWAYS is the default.
5640  */
5641 void
5642 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5643 {
5644         if (policy_callback)
5645                 break_policy_func = policy_callback;
5646         else
5647                 break_policy_func = always_insert_breakpoint;
5648 }
5649
5650 static gboolean
5651 should_insert_brekpoint (MonoMethod *method) {
5652         switch (break_policy_func (method)) {
5653         case MONO_BREAK_POLICY_ALWAYS:
5654                 return TRUE;
5655         case MONO_BREAK_POLICY_NEVER:
5656                 return FALSE;
5657         case MONO_BREAK_POLICY_ON_DBG:
5658                 g_warning ("mdb no longer supported");
5659                 return FALSE;
5660         default:
5661                 g_warning ("Incorrect value returned from break policy callback");
5662                 return FALSE;
5663         }
5664 }
5665
5666 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5667 static MonoInst*
5668 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5669 {
5670         MonoInst *addr, *store, *load;
5671         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5672
5673         /* the bounds check is already done by the callers */
5674         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5675         if (is_set) {
5676                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5677                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5678                 if (mini_type_is_reference (fsig->params [2]))
5679                         emit_write_barrier (cfg, addr, load);
5680         } else {
5681                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5682                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5683         }
5684         return store;
5685 }
5686
5687
5688 static gboolean
5689 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5690 {
5691         return mini_type_is_reference (&klass->byval_arg);
5692 }
5693
5694 static MonoInst*
5695 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5696 {
5697         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5698                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5699                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5700                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5701                 MonoInst *iargs [3];
5702
5703                 if (!helper->slot)
5704                         mono_class_setup_vtable (obj_array);
5705                 g_assert (helper->slot);
5706
5707                 if (sp [0]->type != STACK_OBJ)
5708                         return NULL;
5709                 if (sp [2]->type != STACK_OBJ)
5710                         return NULL;
5711
5712                 iargs [2] = sp [2];
5713                 iargs [1] = sp [1];
5714                 iargs [0] = sp [0];
5715
5716                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5717         } else {
5718                 MonoInst *ins;
5719
5720                 if (mini_is_gsharedvt_variable_klass (klass)) {
5721                         MonoInst *addr;
5722
5723                         // FIXME-VT: OP_ICONST optimization
5724                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5725                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5726                         ins->opcode = OP_STOREV_MEMBASE;
5727                 } else if (sp [1]->opcode == OP_ICONST) {
5728                         int array_reg = sp [0]->dreg;
5729                         int index_reg = sp [1]->dreg;
5730                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5731
5732                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5733                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5734
5735                         if (safety_checks)
5736                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5737                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5738                 } else {
5739                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5740                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5741                         if (generic_class_is_reference_type (cfg, klass))
5742                                 emit_write_barrier (cfg, addr, sp [2]);
5743                 }
5744                 return ins;
5745         }
5746 }
5747
5748 static MonoInst*
5749 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5750 {
5751         MonoClass *eklass;
5752
5753         if (is_set)
5754                 eklass = mono_class_from_mono_type (fsig->params [2]);
5755         else
5756                 eklass = mono_class_from_mono_type (fsig->ret);
5757
5758         if (is_set) {
5759                 return emit_array_store (cfg, eklass, args, FALSE);
5760         } else {
5761                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5762                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5763                 return ins;
5764         }
5765 }
5766
5767 static gboolean
5768 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5769 {
5770         uint32_t align;
5771         int param_size, return_size;
5772
5773         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5774         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5775
5776         if (cfg->verbose_level > 3)
5777                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5778
5779         //Don't allow mixing reference types with value types
5780         if (param_klass->valuetype != return_klass->valuetype) {
5781                 if (cfg->verbose_level > 3)
5782                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5783                 return FALSE;
5784         }
5785
5786         if (!param_klass->valuetype) {
5787                 if (cfg->verbose_level > 3)
5788                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5789                 return TRUE;
5790         }
5791
5792         //That are blitable
5793         if (param_klass->has_references || return_klass->has_references)
5794                 return FALSE;
5795
5796         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5797         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5798                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5799                         if (cfg->verbose_level > 3)
5800                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5801                 return FALSE;
5802         }
5803
5804         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5805                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5806                 if (cfg->verbose_level > 3)
5807                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5808                 return FALSE;
5809         }
5810
5811         param_size = mono_class_value_size (param_klass, &align);
5812         return_size = mono_class_value_size (return_klass, &align);
5813
5814         //We can do it if sizes match
5815         if (param_size == return_size) {
5816                 if (cfg->verbose_level > 3)
5817                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5818                 return TRUE;
5819         }
5820
5821         //No simple way to handle struct if sizes don't match
5822         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5823                 if (cfg->verbose_level > 3)
5824                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5825                 return FALSE;
5826         }
5827
5828         /*
5829          * Same reg size category.
5830          * A quick note on why we don't require widening here.
5831          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5832          *
5833          * Since the source value comes from a function argument, the JIT will already have
5834          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5835          */
5836         if (param_size <= 4 && return_size <= 4) {
5837                 if (cfg->verbose_level > 3)
5838                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5839                 return TRUE;
5840         }
5841
5842         return FALSE;
5843 }
5844
5845 static MonoInst*
5846 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5847 {
5848         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5849         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5850
5851         if (mini_is_gsharedvt_variable_type (fsig->ret))
5852                 return NULL;
5853
5854         //Valuetypes that are semantically equivalent or numbers than can be widened to
5855         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5856                 return args [0];
5857
5858         //Arrays of valuetypes that are semantically equivalent
5859         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5860                 return args [0];
5861
5862         return NULL;
5863 }
5864
5865 static MonoInst*
5866 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5867 {
5868 #ifdef MONO_ARCH_SIMD_INTRINSICS
5869         MonoInst *ins = NULL;
5870
5871         if (cfg->opt & MONO_OPT_SIMD) {
5872                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5873                 if (ins)
5874                         return ins;
5875         }
5876 #endif
5877
5878         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5879 }
5880
5881 static MonoInst*
5882 emit_memory_barrier (MonoCompile *cfg, int kind)
5883 {
5884         MonoInst *ins = NULL;
5885         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5886         MONO_ADD_INS (cfg->cbb, ins);
5887         ins->backend.memory_barrier_kind = kind;
5888
5889         return ins;
5890 }
5891
5892 static MonoInst*
5893 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5894 {
5895         MonoInst *ins = NULL;
5896         int opcode = 0;
5897
5898         /* The LLVM backend supports these intrinsics */
5899         if (cmethod->klass == mono_defaults.math_class) {
5900                 if (strcmp (cmethod->name, "Sin") == 0) {
5901                         opcode = OP_SIN;
5902                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5903                         opcode = OP_COS;
5904                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5905                         opcode = OP_SQRT;
5906                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5907                         opcode = OP_ABS;
5908                 }
5909
5910                 if (opcode && fsig->param_count == 1) {
5911                         MONO_INST_NEW (cfg, ins, opcode);
5912                         ins->type = STACK_R8;
5913                         ins->dreg = mono_alloc_freg (cfg);
5914                         ins->sreg1 = args [0]->dreg;
5915                         MONO_ADD_INS (cfg->cbb, ins);
5916                 }
5917
5918                 opcode = 0;
5919                 if (cfg->opt & MONO_OPT_CMOV) {
5920                         if (strcmp (cmethod->name, "Min") == 0) {
5921                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5922                                         opcode = OP_IMIN;
5923                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5924                                         opcode = OP_IMIN_UN;
5925                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5926                                         opcode = OP_LMIN;
5927                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5928                                         opcode = OP_LMIN_UN;
5929                         } else if (strcmp (cmethod->name, "Max") == 0) {
5930                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5931                                         opcode = OP_IMAX;
5932                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5933                                         opcode = OP_IMAX_UN;
5934                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5935                                         opcode = OP_LMAX;
5936                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5937                                         opcode = OP_LMAX_UN;
5938                         }
5939                 }
5940
5941                 if (opcode && fsig->param_count == 2) {
5942                         MONO_INST_NEW (cfg, ins, opcode);
5943                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5944                         ins->dreg = mono_alloc_ireg (cfg);
5945                         ins->sreg1 = args [0]->dreg;
5946                         ins->sreg2 = args [1]->dreg;
5947                         MONO_ADD_INS (cfg->cbb, ins);
5948                 }
5949         }
5950
5951         return ins;
5952 }
5953
5954 static MonoInst*
5955 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5956 {
5957         if (cmethod->klass == mono_defaults.array_class) {
5958                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5959                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5960                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5961                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5962                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5963                         return emit_array_unsafe_mov (cfg, fsig, args);
5964         }
5965
5966         return NULL;
5967 }
5968
5969 static MonoInst*
5970 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5971 {
5972         MonoInst *ins = NULL;
5973
5974         static MonoClass *runtime_helpers_class = NULL;
5975         if (! runtime_helpers_class)
5976                 runtime_helpers_class = mono_class_from_name (mono_defaults.corlib,
5977                         "System.Runtime.CompilerServices", "RuntimeHelpers");
5978
5979         if (cmethod->klass == mono_defaults.string_class) {
5980                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5981                         int dreg = alloc_ireg (cfg);
5982                         int index_reg = alloc_preg (cfg);
5983                         int add_reg = alloc_preg (cfg);
5984
5985 #if SIZEOF_REGISTER == 8
5986                         if (COMPILE_LLVM (cfg)) {
5987                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5988                         } else {
5989                                 /* The array reg is 64 bits but the index reg is only 32 */
5990                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5991                         }
5992 #else
5993                         index_reg = args [1]->dreg;
5994 #endif
5995                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5996
5997 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5998                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5999                         add_reg = ins->dreg;
6000                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
6001                                                                    add_reg, 0);
6002 #else
6003                         int mult_reg = alloc_preg (cfg);
6004                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
6005                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
6006                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
6007                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
6008 #endif
6009                         type_from_op (cfg, ins, NULL, NULL);
6010                         return ins;
6011                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6012                         int dreg = alloc_ireg (cfg);
6013                         /* Decompose later to allow more optimizations */
6014                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
6015                         ins->type = STACK_I4;
6016                         ins->flags |= MONO_INST_FAULT;
6017                         cfg->cbb->has_array_access = TRUE;
6018                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6019
6020                         return ins;
6021                 } else
6022                         return NULL;
6023         } else if (cmethod->klass == mono_defaults.object_class) {
6024
6025                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6026                         int dreg = alloc_ireg_ref (cfg);
6027                         int vt_reg = alloc_preg (cfg);
6028                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6029                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6030                         type_from_op (cfg, ins, NULL, NULL);
6031
6032                         return ins;
6033                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6034                         int dreg = alloc_ireg (cfg);
6035                         int t1 = alloc_ireg (cfg);
6036
6037                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6038                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6039                         ins->type = STACK_I4;
6040
6041                         return ins;
6042                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6043                         MONO_INST_NEW (cfg, ins, OP_NOP);
6044                         MONO_ADD_INS (cfg->cbb, ins);
6045                         return ins;
6046                 } else
6047                         return NULL;
6048         } else if (cmethod->klass == mono_defaults.array_class) {
6049                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6050                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6051                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6052                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6053
6054 #ifndef MONO_BIG_ARRAYS
6055                 /*
6056                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6057                  * Array methods.
6058                  */
6059                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6060                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6061                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6062                         int dreg = alloc_ireg (cfg);
6063                         int bounds_reg = alloc_ireg_mp (cfg);
6064                         MonoBasicBlock *end_bb, *szarray_bb;
6065                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6066
6067                         NEW_BBLOCK (cfg, end_bb);
6068                         NEW_BBLOCK (cfg, szarray_bb);
6069
6070                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6071                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6072                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6073                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6074                         /* Non-szarray case */
6075                         if (get_length)
6076                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6077                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6078                         else
6079                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6080                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6081                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6082                         MONO_START_BB (cfg, szarray_bb);
6083                         /* Szarray case */
6084                         if (get_length)
6085                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6086                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6087                         else
6088                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6089                         MONO_START_BB (cfg, end_bb);
6090
6091                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6092                         ins->type = STACK_I4;
6093
6094                         return ins;
6095                 }
6096 #endif
6097
6098                 if (cmethod->name [0] != 'g')
6099                         return NULL;
6100
6101                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6102                         int dreg = alloc_ireg (cfg);
6103                         int vtable_reg = alloc_preg (cfg);
6104                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6105                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6106                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6107                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6108                         type_from_op (cfg, ins, NULL, NULL);
6109
6110                         return ins;
6111                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6112                         int dreg = alloc_ireg (cfg);
6113
6114                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6115                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6116                         type_from_op (cfg, ins, NULL, NULL);
6117
6118                         return ins;
6119                 } else
6120                         return NULL;
6121         } else if (cmethod->klass == runtime_helpers_class) {
6122
6123                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6124                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6125                         return ins;
6126                 } else
6127                         return NULL;
6128         } else if (cmethod->klass == mono_defaults.thread_class) {
6129                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6130                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6131                         MONO_ADD_INS (cfg->cbb, ins);
6132                         return ins;
6133                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6134                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6135                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6136                         guint32 opcode = 0;
6137                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6138
6139                         if (fsig->params [0]->type == MONO_TYPE_I1)
6140                                 opcode = OP_LOADI1_MEMBASE;
6141                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6142                                 opcode = OP_LOADU1_MEMBASE;
6143                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6144                                 opcode = OP_LOADI2_MEMBASE;
6145                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6146                                 opcode = OP_LOADU2_MEMBASE;
6147                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6148                                 opcode = OP_LOADI4_MEMBASE;
6149                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6150                                 opcode = OP_LOADU4_MEMBASE;
6151                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6152                                 opcode = OP_LOADI8_MEMBASE;
6153                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6154                                 opcode = OP_LOADR4_MEMBASE;
6155                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6156                                 opcode = OP_LOADR8_MEMBASE;
6157                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6158                                 opcode = OP_LOAD_MEMBASE;
6159
6160                         if (opcode) {
6161                                 MONO_INST_NEW (cfg, ins, opcode);
6162                                 ins->inst_basereg = args [0]->dreg;
6163                                 ins->inst_offset = 0;
6164                                 MONO_ADD_INS (cfg->cbb, ins);
6165
6166                                 switch (fsig->params [0]->type) {
6167                                 case MONO_TYPE_I1:
6168                                 case MONO_TYPE_U1:
6169                                 case MONO_TYPE_I2:
6170                                 case MONO_TYPE_U2:
6171                                 case MONO_TYPE_I4:
6172                                 case MONO_TYPE_U4:
6173                                         ins->dreg = mono_alloc_ireg (cfg);
6174                                         ins->type = STACK_I4;
6175                                         break;
6176                                 case MONO_TYPE_I8:
6177                                 case MONO_TYPE_U8:
6178                                         ins->dreg = mono_alloc_lreg (cfg);
6179                                         ins->type = STACK_I8;
6180                                         break;
6181                                 case MONO_TYPE_I:
6182                                 case MONO_TYPE_U:
6183                                         ins->dreg = mono_alloc_ireg (cfg);
6184 #if SIZEOF_REGISTER == 8
6185                                         ins->type = STACK_I8;
6186 #else
6187                                         ins->type = STACK_I4;
6188 #endif
6189                                         break;
6190                                 case MONO_TYPE_R4:
6191                                 case MONO_TYPE_R8:
6192                                         ins->dreg = mono_alloc_freg (cfg);
6193                                         ins->type = STACK_R8;
6194                                         break;
6195                                 default:
6196                                         g_assert (mini_type_is_reference (fsig->params [0]));
6197                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6198                                         ins->type = STACK_OBJ;
6199                                         break;
6200                                 }
6201
6202                                 if (opcode == OP_LOADI8_MEMBASE)
6203                                         ins = mono_decompose_opcode (cfg, ins);
6204
6205                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
6206
6207                                 return ins;
6208                         }
6209                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6210                         guint32 opcode = 0;
6211                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6212
6213                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6214                                 opcode = OP_STOREI1_MEMBASE_REG;
6215                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6216                                 opcode = OP_STOREI2_MEMBASE_REG;
6217                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6218                                 opcode = OP_STOREI4_MEMBASE_REG;
6219                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6220                                 opcode = OP_STOREI8_MEMBASE_REG;
6221                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6222                                 opcode = OP_STORER4_MEMBASE_REG;
6223                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6224                                 opcode = OP_STORER8_MEMBASE_REG;
6225                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6226                                 opcode = OP_STORE_MEMBASE_REG;
6227
6228                         if (opcode) {
6229                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
6230
6231                                 MONO_INST_NEW (cfg, ins, opcode);
6232                                 ins->sreg1 = args [1]->dreg;
6233                                 ins->inst_destbasereg = args [0]->dreg;
6234                                 ins->inst_offset = 0;
6235                                 MONO_ADD_INS (cfg->cbb, ins);
6236
6237                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6238                                         ins = mono_decompose_opcode (cfg, ins);
6239
6240                                 return ins;
6241                         }
6242                 }
6243         } else if (cmethod->klass->image == mono_defaults.corlib &&
6244                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6245                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6246                 ins = NULL;
6247
6248 #if SIZEOF_REGISTER == 8
6249                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6250                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6251                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6252                                 ins->dreg = mono_alloc_preg (cfg);
6253                                 ins->sreg1 = args [0]->dreg;
6254                                 ins->type = STACK_I8;
6255                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6256                                 MONO_ADD_INS (cfg->cbb, ins);
6257                         } else {
6258                                 MonoInst *load_ins;
6259
6260                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6261
6262                                 /* 64 bit reads are already atomic */
6263                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6264                                 load_ins->dreg = mono_alloc_preg (cfg);
6265                                 load_ins->inst_basereg = args [0]->dreg;
6266                                 load_ins->inst_offset = 0;
6267                                 load_ins->type = STACK_I8;
6268                                 MONO_ADD_INS (cfg->cbb, load_ins);
6269
6270                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6271
6272                                 ins = load_ins;
6273                         }
6274                 }
6275 #endif
6276
6277                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6278                         MonoInst *ins_iconst;
6279                         guint32 opcode = 0;
6280
6281                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6282                                 opcode = OP_ATOMIC_ADD_I4;
6283                                 cfg->has_atomic_add_i4 = TRUE;
6284                         }
6285 #if SIZEOF_REGISTER == 8
6286                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6287                                 opcode = OP_ATOMIC_ADD_I8;
6288 #endif
6289                         if (opcode) {
6290                                 if (!mono_arch_opcode_supported (opcode))
6291                                         return NULL;
6292                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6293                                 ins_iconst->inst_c0 = 1;
6294                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6295                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6296
6297                                 MONO_INST_NEW (cfg, ins, opcode);
6298                                 ins->dreg = mono_alloc_ireg (cfg);
6299                                 ins->inst_basereg = args [0]->dreg;
6300                                 ins->inst_offset = 0;
6301                                 ins->sreg2 = ins_iconst->dreg;
6302                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6303                                 MONO_ADD_INS (cfg->cbb, ins);
6304                         }
6305                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6306                         MonoInst *ins_iconst;
6307                         guint32 opcode = 0;
6308
6309                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6310                                 opcode = OP_ATOMIC_ADD_I4;
6311                                 cfg->has_atomic_add_i4 = TRUE;
6312                         }
6313 #if SIZEOF_REGISTER == 8
6314                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6315                                 opcode = OP_ATOMIC_ADD_I8;
6316 #endif
6317                         if (opcode) {
6318                                 if (!mono_arch_opcode_supported (opcode))
6319                                         return NULL;
6320                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6321                                 ins_iconst->inst_c0 = -1;
6322                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6323                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6324
6325                                 MONO_INST_NEW (cfg, ins, opcode);
6326                                 ins->dreg = mono_alloc_ireg (cfg);
6327                                 ins->inst_basereg = args [0]->dreg;
6328                                 ins->inst_offset = 0;
6329                                 ins->sreg2 = ins_iconst->dreg;
6330                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6331                                 MONO_ADD_INS (cfg->cbb, ins);
6332                         }
6333                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6334                         guint32 opcode = 0;
6335
6336                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6337                                 opcode = OP_ATOMIC_ADD_I4;
6338                                 cfg->has_atomic_add_i4 = TRUE;
6339                         }
6340 #if SIZEOF_REGISTER == 8
6341                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6342                                 opcode = OP_ATOMIC_ADD_I8;
6343 #endif
6344                         if (opcode) {
6345                                 if (!mono_arch_opcode_supported (opcode))
6346                                         return NULL;
6347                                 MONO_INST_NEW (cfg, ins, opcode);
6348                                 ins->dreg = mono_alloc_ireg (cfg);
6349                                 ins->inst_basereg = args [0]->dreg;
6350                                 ins->inst_offset = 0;
6351                                 ins->sreg2 = args [1]->dreg;
6352                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6353                                 MONO_ADD_INS (cfg->cbb, ins);
6354                         }
6355                 }
6356                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6357                         MonoInst *f2i = NULL, *i2f;
6358                         guint32 opcode, f2i_opcode, i2f_opcode;
6359                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6360                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6361
6362                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6363                             fsig->params [0]->type == MONO_TYPE_R4) {
6364                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6365                                 f2i_opcode = OP_MOVE_F_TO_I4;
6366                                 i2f_opcode = OP_MOVE_I4_TO_F;
6367                                 cfg->has_atomic_exchange_i4 = TRUE;
6368                         }
6369 #if SIZEOF_REGISTER == 8
6370                         else if (is_ref ||
6371                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6372                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6373                                  fsig->params [0]->type == MONO_TYPE_I) {
6374                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6375                                 f2i_opcode = OP_MOVE_F_TO_I8;
6376                                 i2f_opcode = OP_MOVE_I8_TO_F;
6377                         }
6378 #else
6379                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6380                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6381                                 cfg->has_atomic_exchange_i4 = TRUE;
6382                         }
6383 #endif
6384                         else
6385                                 return NULL;
6386
6387                         if (!mono_arch_opcode_supported (opcode))
6388                                 return NULL;
6389
6390                         if (is_float) {
6391                                 /* TODO: Decompose these opcodes instead of bailing here. */
6392                                 if (COMPILE_SOFT_FLOAT (cfg))
6393                                         return NULL;
6394
6395                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6396                                 f2i->dreg = mono_alloc_ireg (cfg);
6397                                 f2i->sreg1 = args [1]->dreg;
6398                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6399                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6400                                 MONO_ADD_INS (cfg->cbb, f2i);
6401                         }
6402
6403                         MONO_INST_NEW (cfg, ins, opcode);
6404                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6405                         ins->inst_basereg = args [0]->dreg;
6406                         ins->inst_offset = 0;
6407                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6408                         MONO_ADD_INS (cfg->cbb, ins);
6409
6410                         switch (fsig->params [0]->type) {
6411                         case MONO_TYPE_I4:
6412                                 ins->type = STACK_I4;
6413                                 break;
6414                         case MONO_TYPE_I8:
6415                                 ins->type = STACK_I8;
6416                                 break;
6417                         case MONO_TYPE_I:
6418 #if SIZEOF_REGISTER == 8
6419                                 ins->type = STACK_I8;
6420 #else
6421                                 ins->type = STACK_I4;
6422 #endif
6423                                 break;
6424                         case MONO_TYPE_R4:
6425                         case MONO_TYPE_R8:
6426                                 ins->type = STACK_R8;
6427                                 break;
6428                         default:
6429                                 g_assert (mini_type_is_reference (fsig->params [0]));
6430                                 ins->type = STACK_OBJ;
6431                                 break;
6432                         }
6433
6434                         if (is_float) {
6435                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6436                                 i2f->dreg = mono_alloc_freg (cfg);
6437                                 i2f->sreg1 = ins->dreg;
6438                                 i2f->type = STACK_R8;
6439                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6440                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6441                                 MONO_ADD_INS (cfg->cbb, i2f);
6442
6443                                 ins = i2f;
6444                         }
6445
6446                         if (cfg->gen_write_barriers && is_ref)
6447                                 emit_write_barrier (cfg, args [0], args [1]);
6448                 }
6449                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6450                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6451                         guint32 opcode, f2i_opcode, i2f_opcode;
6452                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6453                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6454
6455                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6456                             fsig->params [1]->type == MONO_TYPE_R4) {
6457                                 opcode = OP_ATOMIC_CAS_I4;
6458                                 f2i_opcode = OP_MOVE_F_TO_I4;
6459                                 i2f_opcode = OP_MOVE_I4_TO_F;
6460                                 cfg->has_atomic_cas_i4 = TRUE;
6461                         }
6462 #if SIZEOF_REGISTER == 8
6463                         else if (is_ref ||
6464                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6465                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6466                                  fsig->params [1]->type == MONO_TYPE_I) {
6467                                 opcode = OP_ATOMIC_CAS_I8;
6468                                 f2i_opcode = OP_MOVE_F_TO_I8;
6469                                 i2f_opcode = OP_MOVE_I8_TO_F;
6470                         }
6471 #else
6472                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6473                                 opcode = OP_ATOMIC_CAS_I4;
6474                                 cfg->has_atomic_cas_i4 = TRUE;
6475                         }
6476 #endif
6477                         else
6478                                 return NULL;
6479
6480                         if (!mono_arch_opcode_supported (opcode))
6481                                 return NULL;
6482
6483                         if (is_float) {
6484                                 /* TODO: Decompose these opcodes instead of bailing here. */
6485                                 if (COMPILE_SOFT_FLOAT (cfg))
6486                                         return NULL;
6487
6488                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6489                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6490                                 f2i_new->sreg1 = args [1]->dreg;
6491                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6492                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6493                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6494
6495                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6496                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6497                                 f2i_cmp->sreg1 = args [2]->dreg;
6498                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6499                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6500                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6501                         }
6502
6503                         MONO_INST_NEW (cfg, ins, opcode);
6504                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6505                         ins->sreg1 = args [0]->dreg;
6506                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6507                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6508                         MONO_ADD_INS (cfg->cbb, ins);
6509
6510                         switch (fsig->params [1]->type) {
6511                         case MONO_TYPE_I4:
6512                                 ins->type = STACK_I4;
6513                                 break;
6514                         case MONO_TYPE_I8:
6515                                 ins->type = STACK_I8;
6516                                 break;
6517                         case MONO_TYPE_I:
6518 #if SIZEOF_REGISTER == 8
6519                                 ins->type = STACK_I8;
6520 #else
6521                                 ins->type = STACK_I4;
6522 #endif
6523                                 break;
6524                         case MONO_TYPE_R4:
6525                                 ins->type = cfg->r4_stack_type;
6526                                 break;
6527                         case MONO_TYPE_R8:
6528                                 ins->type = STACK_R8;
6529                                 break;
6530                         default:
6531                                 g_assert (mini_type_is_reference (fsig->params [1]));
6532                                 ins->type = STACK_OBJ;
6533                                 break;
6534                         }
6535
6536                         if (is_float) {
6537                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6538                                 i2f->dreg = mono_alloc_freg (cfg);
6539                                 i2f->sreg1 = ins->dreg;
6540                                 i2f->type = STACK_R8;
6541                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6542                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6543                                 MONO_ADD_INS (cfg->cbb, i2f);
6544
6545                                 ins = i2f;
6546                         }
6547
6548                         if (cfg->gen_write_barriers && is_ref)
6549                                 emit_write_barrier (cfg, args [0], args [1]);
6550                 }
6551                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6552                          fsig->params [1]->type == MONO_TYPE_I4) {
6553                         MonoInst *cmp, *ceq;
6554
6555                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6556                                 return NULL;
6557
6558                         /* int32 r = CAS (location, value, comparand); */
6559                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6560                         ins->dreg = alloc_ireg (cfg);
6561                         ins->sreg1 = args [0]->dreg;
6562                         ins->sreg2 = args [1]->dreg;
6563                         ins->sreg3 = args [2]->dreg;
6564                         ins->type = STACK_I4;
6565                         MONO_ADD_INS (cfg->cbb, ins);
6566
6567                         /* bool result = r == comparand; */
6568                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6569                         cmp->sreg1 = ins->dreg;
6570                         cmp->sreg2 = args [2]->dreg;
6571                         cmp->type = STACK_I4;
6572                         MONO_ADD_INS (cfg->cbb, cmp);
6573
6574                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6575                         ceq->dreg = alloc_ireg (cfg);
6576                         ceq->type = STACK_I4;
6577                         MONO_ADD_INS (cfg->cbb, ceq);
6578
6579                         /* *success = result; */
6580                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6581
6582                         cfg->has_atomic_cas_i4 = TRUE;
6583                 }
6584                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6585                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6586
6587                 if (ins)
6588                         return ins;
6589         } else if (cmethod->klass->image == mono_defaults.corlib &&
6590                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6591                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6592                 ins = NULL;
6593
6594                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6595                         guint32 opcode = 0;
6596                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6597                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6598
6599                         if (fsig->params [0]->type == MONO_TYPE_I1)
6600                                 opcode = OP_ATOMIC_LOAD_I1;
6601                         else if (fsig->params [0]->type == MONO_TYPE_U1 || fsig->params [0]->type == MONO_TYPE_BOOLEAN)
6602                                 opcode = OP_ATOMIC_LOAD_U1;
6603                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6604                                 opcode = OP_ATOMIC_LOAD_I2;
6605                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6606                                 opcode = OP_ATOMIC_LOAD_U2;
6607                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6608                                 opcode = OP_ATOMIC_LOAD_I4;
6609                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6610                                 opcode = OP_ATOMIC_LOAD_U4;
6611                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6612                                 opcode = OP_ATOMIC_LOAD_R4;
6613                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6614                                 opcode = OP_ATOMIC_LOAD_R8;
6615 #if SIZEOF_REGISTER == 8
6616                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_I)
6617                                 opcode = OP_ATOMIC_LOAD_I8;
6618                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U8 || fsig->params [0]->type == MONO_TYPE_U)
6619                                 opcode = OP_ATOMIC_LOAD_U8;
6620 #else
6621                         else if (fsig->params [0]->type == MONO_TYPE_I)
6622                                 opcode = OP_ATOMIC_LOAD_I4;
6623                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U)
6624                                 opcode = OP_ATOMIC_LOAD_U4;
6625 #endif
6626
6627                         if (opcode) {
6628                                 if (!mono_arch_opcode_supported (opcode))
6629                                         return NULL;
6630
6631                                 MONO_INST_NEW (cfg, ins, opcode);
6632                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6633                                 ins->sreg1 = args [0]->dreg;
6634                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6635                                 MONO_ADD_INS (cfg->cbb, ins);
6636
6637                                 switch (fsig->params [0]->type) {
6638                                 case MONO_TYPE_BOOLEAN:
6639                                 case MONO_TYPE_I1:
6640                                 case MONO_TYPE_U1:
6641                                 case MONO_TYPE_I2:
6642                                 case MONO_TYPE_U2:
6643                                 case MONO_TYPE_I4:
6644                                 case MONO_TYPE_U4:
6645                                         ins->type = STACK_I4;
6646                                         break;
6647                                 case MONO_TYPE_I8:
6648                                 case MONO_TYPE_U8:
6649                                         ins->type = STACK_I8;
6650                                         break;
6651                                 case MONO_TYPE_I:
6652                                 case MONO_TYPE_U:
6653 #if SIZEOF_REGISTER == 8
6654                                         ins->type = STACK_I8;
6655 #else
6656                                         ins->type = STACK_I4;
6657 #endif
6658                                         break;
6659                                 case MONO_TYPE_R4:
6660                                         ins->type = cfg->r4_stack_type;
6661                                         break;
6662                                 case MONO_TYPE_R8:
6663                                         ins->type = STACK_R8;
6664                                         break;
6665                                 default:
6666                                         g_assert (mini_type_is_reference (fsig->params [0]));
6667                                         ins->type = STACK_OBJ;
6668                                         break;
6669                                 }
6670                         }
6671                 }
6672
6673                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6674                         guint32 opcode = 0;
6675                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6676
6677                         if (fsig->params [0]->type == MONO_TYPE_I1)
6678                                 opcode = OP_ATOMIC_STORE_I1;
6679                         else if (fsig->params [0]->type == MONO_TYPE_U1 || fsig->params [0]->type == MONO_TYPE_BOOLEAN)
6680                                 opcode = OP_ATOMIC_STORE_U1;
6681                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6682                                 opcode = OP_ATOMIC_STORE_I2;
6683                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6684                                 opcode = OP_ATOMIC_STORE_U2;
6685                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6686                                 opcode = OP_ATOMIC_STORE_I4;
6687                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6688                                 opcode = OP_ATOMIC_STORE_U4;
6689                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6690                                 opcode = OP_ATOMIC_STORE_R4;
6691                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6692                                 opcode = OP_ATOMIC_STORE_R8;
6693 #if SIZEOF_REGISTER == 8
6694                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_I)
6695                                 opcode = OP_ATOMIC_STORE_I8;
6696                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U8 || fsig->params [0]->type == MONO_TYPE_U)
6697                                 opcode = OP_ATOMIC_STORE_U8;
6698 #else
6699                         else if (fsig->params [0]->type == MONO_TYPE_I)
6700                                 opcode = OP_ATOMIC_STORE_I4;
6701                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U)
6702                                 opcode = OP_ATOMIC_STORE_U4;
6703 #endif
6704
6705                         if (opcode) {
6706                                 if (!mono_arch_opcode_supported (opcode))
6707                                         return NULL;
6708
6709                                 MONO_INST_NEW (cfg, ins, opcode);
6710                                 ins->dreg = args [0]->dreg;
6711                                 ins->sreg1 = args [1]->dreg;
6712                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6713                                 MONO_ADD_INS (cfg->cbb, ins);
6714
6715                                 if (cfg->gen_write_barriers && is_ref)
6716                                         emit_write_barrier (cfg, args [0], args [1]);
6717                         }
6718                 }
6719
6720                 if (ins)
6721                         return ins;
6722         } else if (cmethod->klass->image == mono_defaults.corlib &&
6723                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6724                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6725                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6726                         if (should_insert_brekpoint (cfg->method)) {
6727                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6728                         } else {
6729                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6730                                 MONO_ADD_INS (cfg->cbb, ins);
6731                         }
6732                         return ins;
6733                 }
6734         } else if (cmethod->klass->image == mono_defaults.corlib &&
6735                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6736                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6737                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6738 #ifdef TARGET_WIN32
6739                         EMIT_NEW_ICONST (cfg, ins, 1);
6740 #else
6741                         EMIT_NEW_ICONST (cfg, ins, 0);
6742 #endif
6743                 }
6744         } else if (cmethod->klass->image == mono_defaults.corlib &&
6745                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6746                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6747                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6748                         /* No stack walks are current available, so implement this as an intrinsic */
6749                         MonoInst *assembly_ins;
6750
6751                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6752                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6753                         return ins;
6754                 }
6755         } else if (cmethod->klass == mono_defaults.math_class) {
6756                 /*
6757                  * There is general branchless code for Min/Max, but it does not work for
6758                  * all inputs:
6759                  * http://everything2.com/?node_id=1051618
6760                  */
6761         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6762                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6763                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6764                                 !strcmp (cmethod->klass->name, "Selector")) ||
6765                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6766                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6767                                 !strcmp (cmethod->klass->name, "Selector"))
6768                            ) {
6769                 if (cfg->backend->have_objc_get_selector &&
6770                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6771                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6772                     cfg->compile_aot) {
6773                         MonoInst *pi;
6774                         MonoJumpInfoToken *ji;
6775                         MonoString *s;
6776
6777                         cfg->disable_llvm = TRUE;
6778
6779                         if (args [0]->opcode == OP_GOT_ENTRY) {
6780                                 pi = (MonoInst *)args [0]->inst_p1;
6781                                 g_assert (pi->opcode == OP_PATCH_INFO);
6782                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6783                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6784                         } else {
6785                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6786                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6787                         }
6788
6789                         NULLIFY_INS (args [0]);
6790
6791                         // FIXME: Ugly
6792                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6793                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6794                         ins->dreg = mono_alloc_ireg (cfg);
6795                         // FIXME: Leaks
6796                         ins->inst_p0 = mono_string_to_utf8 (s);
6797                         MONO_ADD_INS (cfg->cbb, ins);
6798                         return ins;
6799                 }
6800         }
6801
6802 #ifdef MONO_ARCH_SIMD_INTRINSICS
6803         if (cfg->opt & MONO_OPT_SIMD) {
6804                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6805                 if (ins)
6806                         return ins;
6807         }
6808 #endif
6809
6810         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6811         if (ins)
6812                 return ins;
6813
6814         if (COMPILE_LLVM (cfg)) {
6815                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6816                 if (ins)
6817                         return ins;
6818         }
6819
6820         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6821 }
6822
6823 /*
6824  * This entry point could be used later for arbitrary method
6825  * redirection.
6826  */
6827 inline static MonoInst*
6828 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6829                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6830 {
6831         if (method->klass == mono_defaults.string_class) {
6832                 /* managed string allocation support */
6833                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6834                         MonoInst *iargs [2];
6835                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6836                         MonoMethod *managed_alloc = NULL;
6837
6838                         g_assert (vtable); /*Should not fail since it System.String*/
6839 #ifndef MONO_CROSS_COMPILE
6840                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6841 #endif
6842                         if (!managed_alloc)
6843                                 return NULL;
6844                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6845                         iargs [1] = args [0];
6846                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6847                 }
6848         }
6849         return NULL;
6850 }
6851
6852 static void
6853 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6854 {
6855         MonoInst *store, *temp;
6856         int i;
6857
6858         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6859                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6860
6861                 /*
6862                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6863                  * would be different than the MonoInst's used to represent arguments, and
6864                  * the ldelema implementation can't deal with that.
6865                  * Solution: When ldelema is used on an inline argument, create a var for
6866                  * it, emit ldelema on that var, and emit the saving code below in
6867                  * inline_method () if needed.
6868                  */
6869                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6870                 cfg->args [i] = temp;
6871                 /* This uses cfg->args [i] which is set by the preceeding line */
6872                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6873                 store->cil_code = sp [0]->cil_code;
6874                 sp++;
6875         }
6876 }
6877
6878 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6879 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6880
6881 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6882 static gboolean
6883 check_inline_called_method_name_limit (MonoMethod *called_method)
6884 {
6885         int strncmp_result;
6886         static const char *limit = NULL;
6887
6888         if (limit == NULL) {
6889                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6890
6891                 if (limit_string != NULL)
6892                         limit = limit_string;
6893                 else
6894                         limit = "";
6895         }
6896
6897         if (limit [0] != '\0') {
6898                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6899
6900                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6901                 g_free (called_method_name);
6902
6903                 //return (strncmp_result <= 0);
6904                 return (strncmp_result == 0);
6905         } else {
6906                 return TRUE;
6907         }
6908 }
6909 #endif
6910
6911 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6912 static gboolean
6913 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6914 {
6915         int strncmp_result;
6916         static const char *limit = NULL;
6917
6918         if (limit == NULL) {
6919                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6920                 if (limit_string != NULL) {
6921                         limit = limit_string;
6922                 } else {
6923                         limit = "";
6924                 }
6925         }
6926
6927         if (limit [0] != '\0') {
6928                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6929
6930                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6931                 g_free (caller_method_name);
6932
6933                 //return (strncmp_result <= 0);
6934                 return (strncmp_result == 0);
6935         } else {
6936                 return TRUE;
6937         }
6938 }
6939 #endif
6940
6941 static void
6942 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6943 {
6944         static double r8_0 = 0.0;
6945         static float r4_0 = 0.0;
6946         MonoInst *ins;
6947         int t;
6948
6949         rtype = mini_get_underlying_type (rtype);
6950         t = rtype->type;
6951
6952         if (rtype->byref) {
6953                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6954         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6955                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6956         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6957                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6958         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6959                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6960                 ins->type = STACK_R4;
6961                 ins->inst_p0 = (void*)&r4_0;
6962                 ins->dreg = dreg;
6963                 MONO_ADD_INS (cfg->cbb, ins);
6964         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6965                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6966                 ins->type = STACK_R8;
6967                 ins->inst_p0 = (void*)&r8_0;
6968                 ins->dreg = dreg;
6969                 MONO_ADD_INS (cfg->cbb, ins);
6970         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6971                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6972                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6973         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6974                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6975         } else {
6976                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6977         }
6978 }
6979
6980 static void
6981 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6982 {
6983         int t;
6984
6985         rtype = mini_get_underlying_type (rtype);
6986         t = rtype->type;
6987
6988         if (rtype->byref) {
6989                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6990         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6991                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6992         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6993                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6994         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6995                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6996         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6997                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6998         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6999                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7000                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7001         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7002                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7003         } else {
7004                 emit_init_rvar (cfg, dreg, rtype);
7005         }
7006 }
7007
7008 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7009 static void
7010 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7011 {
7012         MonoInst *var = cfg->locals [local];
7013         if (COMPILE_SOFT_FLOAT (cfg)) {
7014                 MonoInst *store;
7015                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7016                 emit_init_rvar (cfg, reg, type);
7017                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7018         } else {
7019                 if (init)
7020                         emit_init_rvar (cfg, var->dreg, type);
7021                 else
7022                         emit_dummy_init_rvar (cfg, var->dreg, type);
7023         }
7024 }
7025
7026 /*
7027  * inline_method:
7028  *
7029  *   Return the cost of inlining CMETHOD.
7030  */
7031 static int
7032 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7033                            guchar *ip, guint real_offset, gboolean inline_always)
7034 {
7035         MonoInst *ins, *rvar = NULL;
7036         MonoMethodHeader *cheader;
7037         MonoBasicBlock *ebblock, *sbblock;
7038         int i, costs;
7039         MonoMethod *prev_inlined_method;
7040         MonoInst **prev_locals, **prev_args;
7041         MonoType **prev_arg_types;
7042         guint prev_real_offset;
7043         GHashTable *prev_cbb_hash;
7044         MonoBasicBlock **prev_cil_offset_to_bb;
7045         MonoBasicBlock *prev_cbb;
7046         unsigned char* prev_cil_start;
7047         guint32 prev_cil_offset_to_bb_len;
7048         MonoMethod *prev_current_method;
7049         MonoGenericContext *prev_generic_context;
7050         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7051
7052         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7053
7054 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7055         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7056                 return 0;
7057 #endif
7058 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7059         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7060                 return 0;
7061 #endif
7062
7063         if (!fsig)
7064                 fsig = mono_method_signature (cmethod);
7065
7066         if (cfg->verbose_level > 2)
7067                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7068
7069         if (!cmethod->inline_info) {
7070                 cfg->stat_inlineable_methods++;
7071                 cmethod->inline_info = 1;
7072         }
7073
7074         /* allocate local variables */
7075         cheader = mono_method_get_header (cmethod);
7076
7077         if (cheader == NULL || mono_loader_get_last_error ()) {
7078                 MonoLoaderError *error = mono_loader_get_last_error ();
7079
7080                 if (cheader)
7081                         mono_metadata_free_mh (cheader);
7082                 if (inline_always && error)
7083                         mono_cfg_set_exception (cfg, error->exception_type);
7084
7085                 mono_loader_clear_error ();
7086                 return 0;
7087         }
7088
7089         /*Must verify before creating locals as it can cause the JIT to assert.*/
7090         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7091                 mono_metadata_free_mh (cheader);
7092                 return 0;
7093         }
7094
7095         /* allocate space to store the return value */
7096         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7097                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7098         }
7099
7100         prev_locals = cfg->locals;
7101         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7102         for (i = 0; i < cheader->num_locals; ++i)
7103                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7104
7105         /* allocate start and end blocks */
7106         /* This is needed so if the inline is aborted, we can clean up */
7107         NEW_BBLOCK (cfg, sbblock);
7108         sbblock->real_offset = real_offset;
7109
7110         NEW_BBLOCK (cfg, ebblock);
7111         ebblock->block_num = cfg->num_bblocks++;
7112         ebblock->real_offset = real_offset;
7113
7114         prev_args = cfg->args;
7115         prev_arg_types = cfg->arg_types;
7116         prev_inlined_method = cfg->inlined_method;
7117         cfg->inlined_method = cmethod;
7118         cfg->ret_var_set = FALSE;
7119         cfg->inline_depth ++;
7120         prev_real_offset = cfg->real_offset;
7121         prev_cbb_hash = cfg->cbb_hash;
7122         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7123         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7124         prev_cil_start = cfg->cil_start;
7125         prev_cbb = cfg->cbb;
7126         prev_current_method = cfg->current_method;
7127         prev_generic_context = cfg->generic_context;
7128         prev_ret_var_set = cfg->ret_var_set;
7129         prev_disable_inline = cfg->disable_inline;
7130
7131         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7132                 virtual_ = TRUE;
7133
7134         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7135
7136         ret_var_set = cfg->ret_var_set;
7137
7138         cfg->inlined_method = prev_inlined_method;
7139         cfg->real_offset = prev_real_offset;
7140         cfg->cbb_hash = prev_cbb_hash;
7141         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7142         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7143         cfg->cil_start = prev_cil_start;
7144         cfg->locals = prev_locals;
7145         cfg->args = prev_args;
7146         cfg->arg_types = prev_arg_types;
7147         cfg->current_method = prev_current_method;
7148         cfg->generic_context = prev_generic_context;
7149         cfg->ret_var_set = prev_ret_var_set;
7150         cfg->disable_inline = prev_disable_inline;
7151         cfg->inline_depth --;
7152
7153         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7154                 if (cfg->verbose_level > 2)
7155                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7156
7157                 cfg->stat_inlined_methods++;
7158
7159                 /* always add some code to avoid block split failures */
7160                 MONO_INST_NEW (cfg, ins, OP_NOP);
7161                 MONO_ADD_INS (prev_cbb, ins);
7162
7163                 prev_cbb->next_bb = sbblock;
7164                 link_bblock (cfg, prev_cbb, sbblock);
7165
7166                 /*
7167                  * Get rid of the begin and end bblocks if possible to aid local
7168                  * optimizations.
7169                  */
7170                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7171
7172                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7173                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7174
7175                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7176                         MonoBasicBlock *prev = ebblock->in_bb [0];
7177                         mono_merge_basic_blocks (cfg, prev, ebblock);
7178                         cfg->cbb = prev;
7179                         if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7180                                 mono_merge_basic_blocks (cfg, prev_cbb, prev);
7181                                 cfg->cbb = prev_cbb;
7182                         }
7183                 } else {
7184                         /*
7185                          * Its possible that the rvar is set in some prev bblock, but not in others.
7186                          * (#1835).
7187                          */
7188                         if (rvar) {
7189                                 MonoBasicBlock *bb;
7190
7191                                 for (i = 0; i < ebblock->in_count; ++i) {
7192                                         bb = ebblock->in_bb [i];
7193
7194                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7195                                                 cfg->cbb = bb;
7196
7197                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7198                                         }
7199                                 }
7200                         }
7201
7202                         cfg->cbb = ebblock;
7203                 }
7204
7205                 if (rvar) {
7206                         /*
7207                          * If the inlined method contains only a throw, then the ret var is not
7208                          * set, so set it to a dummy value.
7209                          */
7210                         if (!ret_var_set)
7211                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7212
7213                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7214                         *sp++ = ins;
7215                 }
7216                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7217                 return costs + 1;
7218         } else {
7219                 if (cfg->verbose_level > 2)
7220                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7221                 cfg->exception_type = MONO_EXCEPTION_NONE;
7222                 mono_loader_clear_error ();
7223
7224                 /* This gets rid of the newly added bblocks */
7225                 cfg->cbb = prev_cbb;
7226         }
7227         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7228         return 0;
7229 }
7230
7231 /*
7232  * Some of these comments may well be out-of-date.
7233  * Design decisions: we do a single pass over the IL code (and we do bblock
7234  * splitting/merging in the few cases when it's required: a back jump to an IL
7235  * address that was not already seen as bblock starting point).
7236  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7237  * Complex operations are decomposed in simpler ones right away. We need to let the
7238  * arch-specific code peek and poke inside this process somehow (except when the
7239  * optimizations can take advantage of the full semantic info of coarse opcodes).
7240  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7241  * MonoInst->opcode initially is the IL opcode or some simplification of that
7242  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7243  * opcode with value bigger than OP_LAST.
7244  * At this point the IR can be handed over to an interpreter, a dumb code generator
7245  * or to the optimizing code generator that will translate it to SSA form.
7246  *
7247  * Profiling directed optimizations.
7248  * We may compile by default with few or no optimizations and instrument the code
7249  * or the user may indicate what methods to optimize the most either in a config file
7250  * or through repeated runs where the compiler applies offline the optimizations to
7251  * each method and then decides if it was worth it.
7252  */
7253
7254 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7255 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7256 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7257 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7258 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7259 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7260 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7261 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) TYPE_LOAD_ERROR ((klass))
7262
7263 /* offset from br.s -> br like opcodes */
7264 #define BIG_BRANCH_OFFSET 13
7265
7266 static gboolean
7267 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7268 {
7269         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7270
7271         return b == NULL || b == bb;
7272 }
7273
7274 static int
7275 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7276 {
7277         unsigned char *ip = start;
7278         unsigned char *target;
7279         int i;
7280         guint cli_addr;
7281         MonoBasicBlock *bblock;
7282         const MonoOpcode *opcode;
7283
7284         while (ip < end) {
7285                 cli_addr = ip - start;
7286                 i = mono_opcode_value ((const guint8 **)&ip, end);
7287                 if (i < 0)
7288                         UNVERIFIED;
7289                 opcode = &mono_opcodes [i];
7290                 switch (opcode->argument) {
7291                 case MonoInlineNone:
7292                         ip++;
7293                         break;
7294                 case MonoInlineString:
7295                 case MonoInlineType:
7296                 case MonoInlineField:
7297                 case MonoInlineMethod:
7298                 case MonoInlineTok:
7299                 case MonoInlineSig:
7300                 case MonoShortInlineR:
7301                 case MonoInlineI:
7302                         ip += 5;
7303                         break;
7304                 case MonoInlineVar:
7305                         ip += 3;
7306                         break;
7307                 case MonoShortInlineVar:
7308                 case MonoShortInlineI:
7309                         ip += 2;
7310                         break;
7311                 case MonoShortInlineBrTarget:
7312                         target = start + cli_addr + 2 + (signed char)ip [1];
7313                         GET_BBLOCK (cfg, bblock, target);
7314                         ip += 2;
7315                         if (ip < end)
7316                                 GET_BBLOCK (cfg, bblock, ip);
7317                         break;
7318                 case MonoInlineBrTarget:
7319                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7320                         GET_BBLOCK (cfg, bblock, target);
7321                         ip += 5;
7322                         if (ip < end)
7323                                 GET_BBLOCK (cfg, bblock, ip);
7324                         break;
7325                 case MonoInlineSwitch: {
7326                         guint32 n = read32 (ip + 1);
7327                         guint32 j;
7328                         ip += 5;
7329                         cli_addr += 5 + 4 * n;
7330                         target = start + cli_addr;
7331                         GET_BBLOCK (cfg, bblock, target);
7332
7333                         for (j = 0; j < n; ++j) {
7334                                 target = start + cli_addr + (gint32)read32 (ip);
7335                                 GET_BBLOCK (cfg, bblock, target);
7336                                 ip += 4;
7337                         }
7338                         break;
7339                 }
7340                 case MonoInlineR:
7341                 case MonoInlineI8:
7342                         ip += 9;
7343                         break;
7344                 default:
7345                         g_assert_not_reached ();
7346                 }
7347
7348                 if (i == CEE_THROW) {
7349                         unsigned char *bb_start = ip - 1;
7350
7351                         /* Find the start of the bblock containing the throw */
7352                         bblock = NULL;
7353                         while ((bb_start >= start) && !bblock) {
7354                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7355                                 bb_start --;
7356                         }
7357                         if (bblock)
7358                                 bblock->out_of_line = 1;
7359                 }
7360         }
7361         return 0;
7362 unverified:
7363 exception_exit:
7364         *pos = ip;
7365         return 1;
7366 }
7367
7368 static inline MonoMethod *
7369 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7370 {
7371         MonoMethod *method;
7372
7373         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7374                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7375                 if (context) {
7376                         MonoError error;
7377                         method = mono_class_inflate_generic_method_checked (method, context, &error);
7378                         g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
7379                 }
7380         } else {
7381                 method = mono_get_method_full (m->klass->image, token, klass, context);
7382         }
7383
7384         return method;
7385 }
7386
7387 static inline MonoMethod *
7388 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7389 {
7390         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context);
7391
7392         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg))
7393                 return NULL;
7394
7395         return method;
7396 }
7397
7398 static inline MonoClass*
7399 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7400 {
7401         MonoError error;
7402         MonoClass *klass;
7403
7404         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7405                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7406                 if (context)
7407                         klass = mono_class_inflate_generic_class (klass, context);
7408         } else {
7409                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7410                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7411         }
7412         if (klass)
7413                 mono_class_init (klass);
7414         return klass;
7415 }
7416
7417 static inline MonoMethodSignature*
7418 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7419 {
7420         MonoMethodSignature *fsig;
7421
7422         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7423                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7424         } else {
7425                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7426         }
7427         if (context) {
7428                 MonoError error;
7429                 fsig = mono_inflate_generic_signature(fsig, context, &error);
7430                 // FIXME:
7431                 g_assert(mono_error_ok(&error));
7432         }
7433         return fsig;
7434 }
7435
7436 static MonoMethod*
7437 throw_exception (void)
7438 {
7439         static MonoMethod *method = NULL;
7440
7441         if (!method) {
7442                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7443                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7444         }
7445         g_assert (method);
7446         return method;
7447 }
7448
7449 static void
7450 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7451 {
7452         MonoMethod *thrower = throw_exception ();
7453         MonoInst *args [1];
7454
7455         EMIT_NEW_PCONST (cfg, args [0], ex);
7456         mono_emit_method_call (cfg, thrower, args, NULL);
7457 }
7458
7459 /*
7460  * Return the original method is a wrapper is specified. We can only access
7461  * the custom attributes from the original method.
7462  */
7463 static MonoMethod*
7464 get_original_method (MonoMethod *method)
7465 {
7466         if (method->wrapper_type == MONO_WRAPPER_NONE)
7467                 return method;
7468
7469         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7470         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7471                 return NULL;
7472
7473         /* in other cases we need to find the original method */
7474         return mono_marshal_method_from_wrapper (method);
7475 }
7476
7477 static void
7478 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7479 {
7480         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7481         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7482         if (ex)
7483                 emit_throw_exception (cfg, ex);
7484 }
7485
7486 static void
7487 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7488 {
7489         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7490         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7491         if (ex)
7492                 emit_throw_exception (cfg, ex);
7493 }
7494
7495 /*
7496  * Check that the IL instructions at ip are the array initialization
7497  * sequence and return the pointer to the data and the size.
7498  */
7499 static const char*
7500 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7501 {
7502         /*
7503          * newarr[System.Int32]
7504          * dup
7505          * ldtoken field valuetype ...
7506          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7507          */
7508         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7509                 MonoError error;
7510                 guint32 token = read32 (ip + 7);
7511                 guint32 field_token = read32 (ip + 2);
7512                 guint32 field_index = field_token & 0xffffff;
7513                 guint32 rva;
7514                 const char *data_ptr;
7515                 int size = 0;
7516                 MonoMethod *cmethod;
7517                 MonoClass *dummy_class;
7518                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7519                 int dummy_align;
7520
7521                 if (!field) {
7522                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7523                         return NULL;
7524                 }
7525
7526                 *out_field_token = field_token;
7527
7528                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7529                 if (!cmethod)
7530                         return NULL;
7531                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7532                         return NULL;
7533                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7534                 case MONO_TYPE_BOOLEAN:
7535                 case MONO_TYPE_I1:
7536                 case MONO_TYPE_U1:
7537                         size = 1; break;
7538                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7539 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7540                 case MONO_TYPE_CHAR:
7541                 case MONO_TYPE_I2:
7542                 case MONO_TYPE_U2:
7543                         size = 2; break;
7544                 case MONO_TYPE_I4:
7545                 case MONO_TYPE_U4:
7546                 case MONO_TYPE_R4:
7547                         size = 4; break;
7548                 case MONO_TYPE_R8:
7549                 case MONO_TYPE_I8:
7550                 case MONO_TYPE_U8:
7551                         size = 8; break;
7552 #endif
7553                 default:
7554                         return NULL;
7555                 }
7556                 size *= len;
7557                 if (size > mono_type_size (field->type, &dummy_align))
7558                     return NULL;
7559                 *out_size = size;
7560                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7561                 if (!image_is_dynamic (method->klass->image)) {
7562                         field_index = read32 (ip + 2) & 0xffffff;
7563                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7564                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7565                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7566                         /* for aot code we do the lookup on load */
7567                         if (aot && data_ptr)
7568                                 return (const char *)GUINT_TO_POINTER (rva);
7569                 } else {
7570                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7571                         g_assert (!aot);
7572                         data_ptr = mono_field_get_data (field);
7573                 }
7574                 return data_ptr;
7575         }
7576         return NULL;
7577 }
7578
7579 static void
7580 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7581 {
7582         char *method_fname = mono_method_full_name (method, TRUE);
7583         char *method_code;
7584         MonoMethodHeader *header = mono_method_get_header (method);
7585
7586         if (header->code_size == 0)
7587                 method_code = g_strdup ("method body is empty.");
7588         else
7589                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7590         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
7591         cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
7592         g_free (method_fname);
7593         g_free (method_code);
7594         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7595 }
7596
7597 static void
7598 set_exception_object (MonoCompile *cfg, MonoException *exception)
7599 {
7600         mono_cfg_set_exception (cfg, MONO_EXCEPTION_OBJECT_SUPPLIED);
7601         MONO_GC_REGISTER_ROOT_SINGLE (cfg->exception_ptr, MONO_ROOT_SOURCE_JIT, "jit exception");
7602         cfg->exception_ptr = exception;
7603 }
7604
7605 static void
7606 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7607 {
7608         MonoInst *ins;
7609         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7610         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7611                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7612                 /* Optimize reg-reg moves away */
7613                 /*
7614                  * Can't optimize other opcodes, since sp[0] might point to
7615                  * the last ins of a decomposed opcode.
7616                  */
7617                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7618         } else {
7619                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7620         }
7621 }
7622
7623 /*
7624  * ldloca inhibits many optimizations so try to get rid of it in common
7625  * cases.
7626  */
7627 static inline unsigned char *
7628 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7629 {
7630         int local, token;
7631         MonoClass *klass;
7632         MonoType *type;
7633
7634         if (size == 1) {
7635                 local = ip [1];
7636                 ip += 2;
7637         } else {
7638                 local = read16 (ip + 2);
7639                 ip += 4;
7640         }
7641
7642         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7643                 /* From the INITOBJ case */
7644                 token = read32 (ip + 2);
7645                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7646                 CHECK_TYPELOAD (klass);
7647                 type = mini_get_underlying_type (&klass->byval_arg);
7648                 emit_init_local (cfg, local, type, TRUE);
7649                 return ip + 6;
7650         }
7651  exception_exit:
7652         return NULL;
7653 }
7654
7655 static gboolean
7656 is_exception_class (MonoClass *klass)
7657 {
7658         while (klass) {
7659                 if (klass == mono_defaults.exception_class)
7660                         return TRUE;
7661                 klass = klass->parent;
7662         }
7663         return FALSE;
7664 }
7665
7666 /*
7667  * is_jit_optimizer_disabled:
7668  *
7669  *   Determine whenever M's assembly has a DebuggableAttribute with the
7670  * IsJITOptimizerDisabled flag set.
7671  */
7672 static gboolean
7673 is_jit_optimizer_disabled (MonoMethod *m)
7674 {
7675         MonoAssembly *ass = m->klass->image->assembly;
7676         MonoCustomAttrInfo* attrs;
7677         static MonoClass *klass;
7678         int i;
7679         gboolean val = FALSE;
7680
7681         g_assert (ass);
7682         if (ass->jit_optimizer_disabled_inited)
7683                 return ass->jit_optimizer_disabled;
7684
7685         if (!klass)
7686                 klass = mono_class_from_name (mono_defaults.corlib, "System.Diagnostics", "DebuggableAttribute");
7687         if (!klass) {
7688                 /* Linked away */
7689                 ass->jit_optimizer_disabled = FALSE;
7690                 mono_memory_barrier ();
7691                 ass->jit_optimizer_disabled_inited = TRUE;
7692                 return FALSE;
7693         }
7694
7695         attrs = mono_custom_attrs_from_assembly (ass);
7696         if (attrs) {
7697                 for (i = 0; i < attrs->num_attrs; ++i) {
7698                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7699                         const gchar *p;
7700                         MonoMethodSignature *sig;
7701
7702                         if (!attr->ctor || attr->ctor->klass != klass)
7703                                 continue;
7704                         /* Decode the attribute. See reflection.c */
7705                         p = (const char*)attr->data;
7706                         g_assert (read16 (p) == 0x0001);
7707                         p += 2;
7708
7709                         // FIXME: Support named parameters
7710                         sig = mono_method_signature (attr->ctor);
7711                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7712                                 continue;
7713                         /* Two boolean arguments */
7714                         p ++;
7715                         val = *p;
7716                 }
7717                 mono_custom_attrs_free (attrs);
7718         }
7719
7720         ass->jit_optimizer_disabled = val;
7721         mono_memory_barrier ();
7722         ass->jit_optimizer_disabled_inited = TRUE;
7723
7724         return val;
7725 }
7726
7727 static gboolean
7728 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7729 {
7730         gboolean supported_tail_call;
7731         int i;
7732
7733         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7734
7735         for (i = 0; i < fsig->param_count; ++i) {
7736                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7737                         /* These can point to the current method's stack */
7738                         supported_tail_call = FALSE;
7739         }
7740         if (fsig->hasthis && cmethod->klass->valuetype)
7741                 /* this might point to the current method's stack */
7742                 supported_tail_call = FALSE;
7743         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7744                 supported_tail_call = FALSE;
7745         if (cfg->method->save_lmf)
7746                 supported_tail_call = FALSE;
7747         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7748                 supported_tail_call = FALSE;
7749         if (call_opcode != CEE_CALL)
7750                 supported_tail_call = FALSE;
7751
7752         /* Debugging support */
7753 #if 0
7754         if (supported_tail_call) {
7755                 if (!mono_debug_count ())
7756                         supported_tail_call = FALSE;
7757         }
7758 #endif
7759
7760         return supported_tail_call;
7761 }
7762
7763 /*
7764  * handle_ctor_call:
7765  *
7766  *   Handle calls made to ctors from NEWOBJ opcodes.
7767  */
7768 static void
7769 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7770                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7771 {
7772         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7773
7774         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7775                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7776                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7777                         mono_class_vtable (cfg->domain, cmethod->klass);
7778                         CHECK_TYPELOAD (cmethod->klass);
7779
7780                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7781                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7782                 } else {
7783                         if (context_used) {
7784                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
7785                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7786                         } else {
7787                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7788
7789                                 CHECK_TYPELOAD (cmethod->klass);
7790                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7791                         }
7792                 }
7793         }
7794
7795         /* Avoid virtual calls to ctors if possible */
7796         if (mono_class_is_marshalbyref (cmethod->klass))
7797                 callvirt_this_arg = sp [0];
7798
7799         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7800                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7801                 CHECK_CFG_EXCEPTION;
7802         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7803                            mono_method_check_inlining (cfg, cmethod) &&
7804                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7805                 int costs;
7806
7807                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7808                         cfg->real_offset += 5;
7809
7810                         *inline_costs += costs - 5;
7811                 } else {
7812                         INLINE_FAILURE ("inline failure");
7813                         // FIXME-VT: Clean this up
7814                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7815                                 GSHAREDVT_FAILURE(*ip);
7816                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7817                 }
7818         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7819                 MonoInst *addr;
7820
7821                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7822
7823                 if (cfg->llvm_only) {
7824                         // FIXME: Avoid initializing vtable_arg
7825                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7826                 } else {
7827                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7828                 }
7829         } else if (context_used &&
7830                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7831                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7832                 MonoInst *cmethod_addr;
7833
7834                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7835
7836                 if (cfg->llvm_only) {
7837                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7838                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7839                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7840                 } else {
7841                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7842                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7843
7844                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7845                 }
7846         } else {
7847                 INLINE_FAILURE ("ctor call");
7848                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7849                                                                                   callvirt_this_arg, NULL, vtable_arg);
7850         }
7851  exception_exit:
7852         return;
7853 }
7854
7855 static void
7856 emit_setret (MonoCompile *cfg, MonoInst *val)
7857 {
7858         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7859         MonoInst *ins;
7860
7861         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7862                 MonoInst *ret_addr;
7863
7864                 if (!cfg->vret_addr) {
7865                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7866                 } else {
7867                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7868
7869                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7870                         ins->klass = mono_class_from_mono_type (ret_type);
7871                 }
7872         } else {
7873 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7874                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7875                         MonoInst *iargs [1];
7876                         MonoInst *conv;
7877
7878                         iargs [0] = val;
7879                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7880                         mono_arch_emit_setret (cfg, cfg->method, conv);
7881                 } else {
7882                         mono_arch_emit_setret (cfg, cfg->method, val);
7883                 }
7884 #else
7885                 mono_arch_emit_setret (cfg, cfg->method, val);
7886 #endif
7887         }
7888 }
7889
7890 /*
7891  * mono_method_to_ir:
7892  *
7893  *   Translate the .net IL into linear IR.
7894  */
7895 int
7896 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7897                    MonoInst *return_var, MonoInst **inline_args,
7898                    guint inline_offset, gboolean is_virtual_call)
7899 {
7900         MonoError error;
7901         MonoInst *ins, **sp, **stack_start;
7902         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7903         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7904         MonoMethod *cmethod, *method_definition;
7905         MonoInst **arg_array;
7906         MonoMethodHeader *header;
7907         MonoImage *image;
7908         guint32 token, ins_flag;
7909         MonoClass *klass;
7910         MonoClass *constrained_class = NULL;
7911         unsigned char *ip, *end, *target, *err_pos;
7912         MonoMethodSignature *sig;
7913         MonoGenericContext *generic_context = NULL;
7914         MonoGenericContainer *generic_container = NULL;
7915         MonoType **param_types;
7916         int i, n, start_new_bblock, dreg;
7917         int num_calls = 0, inline_costs = 0;
7918         int breakpoint_id = 0;
7919         guint num_args;
7920         GSList *class_inits = NULL;
7921         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7922         int context_used;
7923         gboolean init_locals, seq_points, skip_dead_blocks;
7924         gboolean sym_seq_points = FALSE;
7925         MonoDebugMethodInfo *minfo;
7926         MonoBitSet *seq_point_locs = NULL;
7927         MonoBitSet *seq_point_set_locs = NULL;
7928
7929         cfg->disable_inline = is_jit_optimizer_disabled (method);
7930
7931         /* serialization and xdomain stuff may need access to private fields and methods */
7932         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7933         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7934         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7935         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7936         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7937         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7938
7939         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7940         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7941         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7942         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7943         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7944
7945         image = method->klass->image;
7946         header = mono_method_get_header (method);
7947         if (!header) {
7948                 MonoLoaderError *error;
7949
7950                 if ((error = mono_loader_get_last_error ())) {
7951                         mono_cfg_set_exception (cfg, error->exception_type);
7952                 } else {
7953                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
7954                         cfg->exception_message = g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name);
7955                 }
7956                 goto exception_exit;
7957         }
7958         generic_container = mono_method_get_generic_container (method);
7959         sig = mono_method_signature (method);
7960         num_args = sig->hasthis + sig->param_count;
7961         ip = (unsigned char*)header->code;
7962         cfg->cil_start = ip;
7963         end = ip + header->code_size;
7964         cfg->stat_cil_code_size += header->code_size;
7965
7966         seq_points = cfg->gen_seq_points && cfg->method == method;
7967
7968         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7969                 /* We could hit a seq point before attaching to the JIT (#8338) */
7970                 seq_points = FALSE;
7971         }
7972
7973         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7974                 minfo = mono_debug_lookup_method (method);
7975                 if (minfo) {
7976                         MonoSymSeqPoint *sps;
7977                         int i, n_il_offsets;
7978
7979                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7980                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7981                         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);
7982                         sym_seq_points = TRUE;
7983                         for (i = 0; i < n_il_offsets; ++i) {
7984                                 if (sps [i].il_offset < header->code_size)
7985                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7986                         }
7987                         g_free (sps);
7988                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7989                         /* Methods without line number info like auto-generated property accessors */
7990                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7991                         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);
7992                         sym_seq_points = TRUE;
7993                 }
7994         }
7995
7996         /*
7997          * Methods without init_locals set could cause asserts in various passes
7998          * (#497220). To work around this, we emit dummy initialization opcodes
7999          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8000          * on some platforms.
8001          */
8002         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8003                 init_locals = header->init_locals;
8004         else
8005                 init_locals = TRUE;
8006
8007         method_definition = method;
8008         while (method_definition->is_inflated) {
8009                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8010                 method_definition = imethod->declaring;
8011         }
8012
8013         /* SkipVerification is not allowed if core-clr is enabled */
8014         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8015                 dont_verify = TRUE;
8016                 dont_verify_stloc = TRUE;
8017         }
8018
8019         if (sig->is_inflated)
8020                 generic_context = mono_method_get_context (method);
8021         else if (generic_container)
8022                 generic_context = &generic_container->context;
8023         cfg->generic_context = generic_context;
8024
8025         if (!cfg->gshared)
8026                 g_assert (!sig->has_type_parameters);
8027
8028         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8029                 g_assert (method->is_inflated);
8030                 g_assert (mono_method_get_context (method)->method_inst);
8031         }
8032         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8033                 g_assert (sig->generic_param_count);
8034
8035         if (cfg->method == method) {
8036                 cfg->real_offset = 0;
8037         } else {
8038                 cfg->real_offset = inline_offset;
8039         }
8040
8041         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8042         cfg->cil_offset_to_bb_len = header->code_size;
8043
8044         cfg->current_method = method;
8045
8046         if (cfg->verbose_level > 2)
8047                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8048
8049         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8050         if (sig->hasthis)
8051                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8052         for (n = 0; n < sig->param_count; ++n)
8053                 param_types [n + sig->hasthis] = sig->params [n];
8054         cfg->arg_types = param_types;
8055
8056         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8057         if (cfg->method == method) {
8058
8059                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8060                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8061
8062                 /* ENTRY BLOCK */
8063                 NEW_BBLOCK (cfg, start_bblock);
8064                 cfg->bb_entry = start_bblock;
8065                 start_bblock->cil_code = NULL;
8066                 start_bblock->cil_length = 0;
8067
8068                 /* EXIT BLOCK */
8069                 NEW_BBLOCK (cfg, end_bblock);
8070                 cfg->bb_exit = end_bblock;
8071                 end_bblock->cil_code = NULL;
8072                 end_bblock->cil_length = 0;
8073                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8074                 g_assert (cfg->num_bblocks == 2);
8075
8076                 arg_array = cfg->args;
8077
8078                 if (header->num_clauses) {
8079                         cfg->spvars = g_hash_table_new (NULL, NULL);
8080                         cfg->exvars = g_hash_table_new (NULL, NULL);
8081                 }
8082                 /* handle exception clauses */
8083                 for (i = 0; i < header->num_clauses; ++i) {
8084                         MonoBasicBlock *try_bb;
8085                         MonoExceptionClause *clause = &header->clauses [i];
8086                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8087
8088                         try_bb->real_offset = clause->try_offset;
8089                         try_bb->try_start = TRUE;
8090                         try_bb->region = ((i + 1) << 8) | clause->flags;
8091                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8092                         tblock->real_offset = clause->handler_offset;
8093                         tblock->flags |= BB_EXCEPTION_HANDLER;
8094
8095                         /*
8096                          * Linking the try block with the EH block hinders inlining as we won't be able to
8097                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8098                          */
8099                         if (COMPILE_LLVM (cfg))
8100                                 link_bblock (cfg, try_bb, tblock);
8101
8102                         if (*(ip + clause->handler_offset) == CEE_POP)
8103                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8104
8105                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8106                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8107                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8108                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8109                                 MONO_ADD_INS (tblock, ins);
8110
8111                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8112                                         /* finally clauses already have a seq point */
8113                                         /* seq points for filter clauses are emitted below */
8114                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8115                                         MONO_ADD_INS (tblock, ins);
8116                                 }
8117
8118                                 /* todo: is a fault block unsafe to optimize? */
8119                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8120                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8121                         }
8122
8123                         /*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);
8124                           while (p < end) {
8125                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8126                           }*/
8127                         /* catch and filter blocks get the exception object on the stack */
8128                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8129                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8130
8131                                 /* mostly like handle_stack_args (), but just sets the input args */
8132                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8133                                 tblock->in_scount = 1;
8134                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8135                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8136
8137                                 cfg->cbb = tblock;
8138
8139 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8140                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8141                                 if (!cfg->compile_llvm) {
8142                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8143                                         ins->dreg = tblock->in_stack [0]->dreg;
8144                                         MONO_ADD_INS (tblock, ins);
8145                                 }
8146 #else
8147                                 MonoInst *dummy_use;
8148
8149                                 /*
8150                                  * Add a dummy use for the exvar so its liveness info will be
8151                                  * correct.
8152                                  */
8153                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8154 #endif
8155
8156                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8157                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8158                                         MONO_ADD_INS (tblock, ins);
8159                                 }
8160
8161                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8162                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8163                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8164                                         tblock->real_offset = clause->data.filter_offset;
8165                                         tblock->in_scount = 1;
8166                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8167                                         /* The filter block shares the exvar with the handler block */
8168                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8169                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8170                                         MONO_ADD_INS (tblock, ins);
8171                                 }
8172                         }
8173
8174                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8175                                         clause->data.catch_class &&
8176                                         cfg->gshared &&
8177                                         mono_class_check_context_used (clause->data.catch_class)) {
8178                                 /*
8179                                  * In shared generic code with catch
8180                                  * clauses containing type variables
8181                                  * the exception handling code has to
8182                                  * be able to get to the rgctx.
8183                                  * Therefore we have to make sure that
8184                                  * the vtable/mrgctx argument (for
8185                                  * static or generic methods) or the
8186                                  * "this" argument (for non-static
8187                                  * methods) are live.
8188                                  */
8189                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8190                                                 mini_method_get_context (method)->method_inst ||
8191                                                 method->klass->valuetype) {
8192                                         mono_get_vtable_var (cfg);
8193                                 } else {
8194                                         MonoInst *dummy_use;
8195
8196                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8197                                 }
8198                         }
8199                 }
8200         } else {
8201                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8202                 cfg->cbb = start_bblock;
8203                 cfg->args = arg_array;
8204                 mono_save_args (cfg, sig, inline_args);
8205         }
8206
8207         /* FIRST CODE BLOCK */
8208         NEW_BBLOCK (cfg, tblock);
8209         tblock->cil_code = ip;
8210         cfg->cbb = tblock;
8211         cfg->ip = ip;
8212
8213         ADD_BBLOCK (cfg, tblock);
8214
8215         if (cfg->method == method) {
8216                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8217                 if (breakpoint_id) {
8218                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8219                         MONO_ADD_INS (cfg->cbb, ins);
8220                 }
8221         }
8222
8223         /* we use a separate basic block for the initialization code */
8224         NEW_BBLOCK (cfg, init_localsbb);
8225         cfg->bb_init = init_localsbb;
8226         init_localsbb->real_offset = cfg->real_offset;
8227         start_bblock->next_bb = init_localsbb;
8228         init_localsbb->next_bb = cfg->cbb;
8229         link_bblock (cfg, start_bblock, init_localsbb);
8230         link_bblock (cfg, init_localsbb, cfg->cbb);
8231
8232         cfg->cbb = init_localsbb;
8233
8234         if (cfg->gsharedvt && cfg->method == method) {
8235                 MonoGSharedVtMethodInfo *info;
8236                 MonoInst *var, *locals_var;
8237                 int dreg;
8238
8239                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8240                 info->method = cfg->method;
8241                 info->count_entries = 16;
8242                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8243                 cfg->gsharedvt_info = info;
8244
8245                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8246                 /* prevent it from being register allocated */
8247                 //var->flags |= MONO_INST_VOLATILE;
8248                 cfg->gsharedvt_info_var = var;
8249
8250                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8251                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8252
8253                 /* Allocate locals */
8254                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8255                 /* prevent it from being register allocated */
8256                 //locals_var->flags |= MONO_INST_VOLATILE;
8257                 cfg->gsharedvt_locals_var = locals_var;
8258
8259                 dreg = alloc_ireg (cfg);
8260                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8261
8262                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8263                 ins->dreg = locals_var->dreg;
8264                 ins->sreg1 = dreg;
8265                 MONO_ADD_INS (cfg->cbb, ins);
8266                 cfg->gsharedvt_locals_var_ins = ins;
8267
8268                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8269                 /*
8270                 if (init_locals)
8271                         ins->flags |= MONO_INST_INIT;
8272                 */
8273         }
8274
8275         if (mono_security_core_clr_enabled ()) {
8276                 /* check if this is native code, e.g. an icall or a p/invoke */
8277                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8278                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8279                         if (wrapped) {
8280                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8281                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8282
8283                                 /* if this ia a native call then it can only be JITted from platform code */
8284                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8285                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8286                                                 MonoException *ex = icall ? mono_get_exception_security () :
8287                                                         mono_get_exception_method_access ();
8288                                                 emit_throw_exception (cfg, ex);
8289                                         }
8290                                 }
8291                         }
8292                 }
8293         }
8294
8295         CHECK_CFG_EXCEPTION;
8296
8297         if (header->code_size == 0)
8298                 UNVERIFIED;
8299
8300         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8301                 ip = err_pos;
8302                 UNVERIFIED;
8303         }
8304
8305         if (cfg->method == method)
8306                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8307
8308         for (n = 0; n < header->num_locals; ++n) {
8309                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8310                         UNVERIFIED;
8311         }
8312         class_inits = NULL;
8313
8314         /* We force the vtable variable here for all shared methods
8315            for the possibility that they might show up in a stack
8316            trace where their exact instantiation is needed. */
8317         if (cfg->gshared && method == cfg->method) {
8318                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8319                                 mini_method_get_context (method)->method_inst ||
8320                                 method->klass->valuetype) {
8321                         mono_get_vtable_var (cfg);
8322                 } else {
8323                         /* FIXME: Is there a better way to do this?
8324                            We need the variable live for the duration
8325                            of the whole method. */
8326                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8327                 }
8328         }
8329
8330         /* add a check for this != NULL to inlined methods */
8331         if (is_virtual_call) {
8332                 MonoInst *arg_ins;
8333
8334                 NEW_ARGLOAD (cfg, arg_ins, 0);
8335                 MONO_ADD_INS (cfg->cbb, arg_ins);
8336                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8337         }
8338
8339         skip_dead_blocks = !dont_verify;
8340         if (skip_dead_blocks) {
8341                 original_bb = bb = mono_basic_block_split (method, &cfg->error);
8342                 CHECK_CFG_ERROR;
8343                 g_assert (bb);
8344         }
8345
8346         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8347         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8348
8349         ins_flag = 0;
8350         start_new_bblock = 0;
8351         while (ip < end) {
8352                 if (cfg->method == method)
8353                         cfg->real_offset = ip - header->code;
8354                 else
8355                         cfg->real_offset = inline_offset;
8356                 cfg->ip = ip;
8357
8358                 context_used = 0;
8359
8360                 if (start_new_bblock) {
8361                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8362                         if (start_new_bblock == 2) {
8363                                 g_assert (ip == tblock->cil_code);
8364                         } else {
8365                                 GET_BBLOCK (cfg, tblock, ip);
8366                         }
8367                         cfg->cbb->next_bb = tblock;
8368                         cfg->cbb = tblock;
8369                         start_new_bblock = 0;
8370                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8371                                 if (cfg->verbose_level > 3)
8372                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8373                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8374                                 *sp++ = ins;
8375                         }
8376                         if (class_inits)
8377                                 g_slist_free (class_inits);
8378                         class_inits = NULL;
8379                 } else {
8380                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8381                                 link_bblock (cfg, cfg->cbb, tblock);
8382                                 if (sp != stack_start) {
8383                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8384                                         sp = stack_start;
8385                                         CHECK_UNVERIFIABLE (cfg);
8386                                 }
8387                                 cfg->cbb->next_bb = tblock;
8388                                 cfg->cbb = tblock;
8389                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8390                                         if (cfg->verbose_level > 3)
8391                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8392                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8393                                         *sp++ = ins;
8394                                 }
8395                                 g_slist_free (class_inits);
8396                                 class_inits = NULL;
8397                         }
8398                 }
8399
8400                 if (skip_dead_blocks) {
8401                         int ip_offset = ip - header->code;
8402
8403                         if (ip_offset == bb->end)
8404                                 bb = bb->next;
8405
8406                         if (bb->dead) {
8407                                 int op_size = mono_opcode_size (ip, end);
8408                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8409
8410                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8411
8412                                 if (ip_offset + op_size == bb->end) {
8413                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8414                                         MONO_ADD_INS (cfg->cbb, ins);
8415                                         start_new_bblock = 1;
8416                                 }
8417
8418                                 ip += op_size;
8419                                 continue;
8420                         }
8421                 }
8422                 /*
8423                  * Sequence points are points where the debugger can place a breakpoint.
8424                  * Currently, we generate these automatically at points where the IL
8425                  * stack is empty.
8426                  */
8427                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8428                         /*
8429                          * Make methods interruptable at the beginning, and at the targets of
8430                          * backward branches.
8431                          * Also, do this at the start of every bblock in methods with clauses too,
8432                          * to be able to handle instructions with inprecise control flow like
8433                          * throw/endfinally.
8434                          * Backward branches are handled at the end of method-to-ir ().
8435                          */
8436                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8437                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8438
8439                         /* Avoid sequence points on empty IL like .volatile */
8440                         // FIXME: Enable this
8441                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8442                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8443                         if ((sp != stack_start) && !sym_seq_point)
8444                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8445                         MONO_ADD_INS (cfg->cbb, ins);
8446
8447                         if (sym_seq_points)
8448                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8449                 }
8450
8451                 cfg->cbb->real_offset = cfg->real_offset;
8452
8453                 if ((cfg->method == method) && cfg->coverage_info) {
8454                         guint32 cil_offset = ip - header->code;
8455                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8456
8457                         /* TODO: Use an increment here */
8458 #if defined(TARGET_X86)
8459                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8460                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8461                         ins->inst_imm = 1;
8462                         MONO_ADD_INS (cfg->cbb, ins);
8463 #else
8464                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8465                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8466 #endif
8467                 }
8468
8469                 if (cfg->verbose_level > 3)
8470                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8471
8472                 switch (*ip) {
8473                 case CEE_NOP:
8474                         if (seq_points && !sym_seq_points && sp != stack_start) {
8475                                 /*
8476                                  * The C# compiler uses these nops to notify the JIT that it should
8477                                  * insert seq points.
8478                                  */
8479                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8480                                 MONO_ADD_INS (cfg->cbb, ins);
8481                         }
8482                         if (cfg->keep_cil_nops)
8483                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8484                         else
8485                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8486                         ip++;
8487                         MONO_ADD_INS (cfg->cbb, ins);
8488                         break;
8489                 case CEE_BREAK:
8490                         if (should_insert_brekpoint (cfg->method)) {
8491                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8492                         } else {
8493                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8494                         }
8495                         ip++;
8496                         MONO_ADD_INS (cfg->cbb, ins);
8497                         break;
8498                 case CEE_LDARG_0:
8499                 case CEE_LDARG_1:
8500                 case CEE_LDARG_2:
8501                 case CEE_LDARG_3:
8502                         CHECK_STACK_OVF (1);
8503                         n = (*ip)-CEE_LDARG_0;
8504                         CHECK_ARG (n);
8505                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8506                         ip++;
8507                         *sp++ = ins;
8508                         break;
8509                 case CEE_LDLOC_0:
8510                 case CEE_LDLOC_1:
8511                 case CEE_LDLOC_2:
8512                 case CEE_LDLOC_3:
8513                         CHECK_STACK_OVF (1);
8514                         n = (*ip)-CEE_LDLOC_0;
8515                         CHECK_LOCAL (n);
8516                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8517                         ip++;
8518                         *sp++ = ins;
8519                         break;
8520                 case CEE_STLOC_0:
8521                 case CEE_STLOC_1:
8522                 case CEE_STLOC_2:
8523                 case CEE_STLOC_3: {
8524                         CHECK_STACK (1);
8525                         n = (*ip)-CEE_STLOC_0;
8526                         CHECK_LOCAL (n);
8527                         --sp;
8528                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8529                                 UNVERIFIED;
8530                         emit_stloc_ir (cfg, sp, header, n);
8531                         ++ip;
8532                         inline_costs += 1;
8533                         break;
8534                         }
8535                 case CEE_LDARG_S:
8536                         CHECK_OPSIZE (2);
8537                         CHECK_STACK_OVF (1);
8538                         n = ip [1];
8539                         CHECK_ARG (n);
8540                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8541                         *sp++ = ins;
8542                         ip += 2;
8543                         break;
8544                 case CEE_LDARGA_S:
8545                         CHECK_OPSIZE (2);
8546                         CHECK_STACK_OVF (1);
8547                         n = ip [1];
8548                         CHECK_ARG (n);
8549                         NEW_ARGLOADA (cfg, ins, n);
8550                         MONO_ADD_INS (cfg->cbb, ins);
8551                         *sp++ = ins;
8552                         ip += 2;
8553                         break;
8554                 case CEE_STARG_S:
8555                         CHECK_OPSIZE (2);
8556                         CHECK_STACK (1);
8557                         --sp;
8558                         n = ip [1];
8559                         CHECK_ARG (n);
8560                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8561                                 UNVERIFIED;
8562                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8563                         ip += 2;
8564                         break;
8565                 case CEE_LDLOC_S:
8566                         CHECK_OPSIZE (2);
8567                         CHECK_STACK_OVF (1);
8568                         n = ip [1];
8569                         CHECK_LOCAL (n);
8570                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8571                         *sp++ = ins;
8572                         ip += 2;
8573                         break;
8574                 case CEE_LDLOCA_S: {
8575                         unsigned char *tmp_ip;
8576                         CHECK_OPSIZE (2);
8577                         CHECK_STACK_OVF (1);
8578                         CHECK_LOCAL (ip [1]);
8579
8580                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8581                                 ip = tmp_ip;
8582                                 inline_costs += 1;
8583                                 break;
8584                         }
8585
8586                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8587                         *sp++ = ins;
8588                         ip += 2;
8589                         break;
8590                 }
8591                 case CEE_STLOC_S:
8592                         CHECK_OPSIZE (2);
8593                         CHECK_STACK (1);
8594                         --sp;
8595                         CHECK_LOCAL (ip [1]);
8596                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8597                                 UNVERIFIED;
8598                         emit_stloc_ir (cfg, sp, header, ip [1]);
8599                         ip += 2;
8600                         inline_costs += 1;
8601                         break;
8602                 case CEE_LDNULL:
8603                         CHECK_STACK_OVF (1);
8604                         EMIT_NEW_PCONST (cfg, ins, NULL);
8605                         ins->type = STACK_OBJ;
8606                         ++ip;
8607                         *sp++ = ins;
8608                         break;
8609                 case CEE_LDC_I4_M1:
8610                         CHECK_STACK_OVF (1);
8611                         EMIT_NEW_ICONST (cfg, ins, -1);
8612                         ++ip;
8613                         *sp++ = ins;
8614                         break;
8615                 case CEE_LDC_I4_0:
8616                 case CEE_LDC_I4_1:
8617                 case CEE_LDC_I4_2:
8618                 case CEE_LDC_I4_3:
8619                 case CEE_LDC_I4_4:
8620                 case CEE_LDC_I4_5:
8621                 case CEE_LDC_I4_6:
8622                 case CEE_LDC_I4_7:
8623                 case CEE_LDC_I4_8:
8624                         CHECK_STACK_OVF (1);
8625                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8626                         ++ip;
8627                         *sp++ = ins;
8628                         break;
8629                 case CEE_LDC_I4_S:
8630                         CHECK_OPSIZE (2);
8631                         CHECK_STACK_OVF (1);
8632                         ++ip;
8633                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8634                         ++ip;
8635                         *sp++ = ins;
8636                         break;
8637                 case CEE_LDC_I4:
8638                         CHECK_OPSIZE (5);
8639                         CHECK_STACK_OVF (1);
8640                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8641                         ip += 5;
8642                         *sp++ = ins;
8643                         break;
8644                 case CEE_LDC_I8:
8645                         CHECK_OPSIZE (9);
8646                         CHECK_STACK_OVF (1);
8647                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8648                         ins->type = STACK_I8;
8649                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8650                         ++ip;
8651                         ins->inst_l = (gint64)read64 (ip);
8652                         MONO_ADD_INS (cfg->cbb, ins);
8653                         ip += 8;
8654                         *sp++ = ins;
8655                         break;
8656                 case CEE_LDC_R4: {
8657                         float *f;
8658                         gboolean use_aotconst = FALSE;
8659
8660 #ifdef TARGET_POWERPC
8661                         /* FIXME: Clean this up */
8662                         if (cfg->compile_aot)
8663                                 use_aotconst = TRUE;
8664 #endif
8665
8666                         /* FIXME: we should really allocate this only late in the compilation process */
8667                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8668                         CHECK_OPSIZE (5);
8669                         CHECK_STACK_OVF (1);
8670
8671                         if (use_aotconst) {
8672                                 MonoInst *cons;
8673                                 int dreg;
8674
8675                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8676
8677                                 dreg = alloc_freg (cfg);
8678                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8679                                 ins->type = cfg->r4_stack_type;
8680                         } else {
8681                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8682                                 ins->type = cfg->r4_stack_type;
8683                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8684                                 ins->inst_p0 = f;
8685                                 MONO_ADD_INS (cfg->cbb, ins);
8686                         }
8687                         ++ip;
8688                         readr4 (ip, f);
8689                         ip += 4;
8690                         *sp++ = ins;
8691                         break;
8692                 }
8693                 case CEE_LDC_R8: {
8694                         double *d;
8695                         gboolean use_aotconst = FALSE;
8696
8697 #ifdef TARGET_POWERPC
8698                         /* FIXME: Clean this up */
8699                         if (cfg->compile_aot)
8700                                 use_aotconst = TRUE;
8701 #endif
8702
8703                         /* FIXME: we should really allocate this only late in the compilation process */
8704                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8705                         CHECK_OPSIZE (9);
8706                         CHECK_STACK_OVF (1);
8707
8708                         if (use_aotconst) {
8709                                 MonoInst *cons;
8710                                 int dreg;
8711
8712                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8713
8714                                 dreg = alloc_freg (cfg);
8715                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8716                                 ins->type = STACK_R8;
8717                         } else {
8718                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8719                                 ins->type = STACK_R8;
8720                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8721                                 ins->inst_p0 = d;
8722                                 MONO_ADD_INS (cfg->cbb, ins);
8723                         }
8724                         ++ip;
8725                         readr8 (ip, d);
8726                         ip += 8;
8727                         *sp++ = ins;
8728                         break;
8729                 }
8730                 case CEE_DUP: {
8731                         MonoInst *temp, *store;
8732                         CHECK_STACK (1);
8733                         CHECK_STACK_OVF (1);
8734                         sp--;
8735                         ins = *sp;
8736
8737                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8738                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8739
8740                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8741                         *sp++ = ins;
8742
8743                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8744                         *sp++ = ins;
8745
8746                         ++ip;
8747                         inline_costs += 2;
8748                         break;
8749                 }
8750                 case CEE_POP:
8751                         CHECK_STACK (1);
8752                         ip++;
8753                         --sp;
8754
8755 #ifdef TARGET_X86
8756                         if (sp [0]->type == STACK_R8)
8757                                 /* we need to pop the value from the x86 FP stack */
8758                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8759 #endif
8760                         break;
8761                 case CEE_JMP: {
8762                         MonoCallInst *call;
8763                         MonoMethodSignature *fsig;
8764                         int i, n;
8765
8766                         INLINE_FAILURE ("jmp");
8767                         GSHAREDVT_FAILURE (*ip);
8768
8769                         CHECK_OPSIZE (5);
8770                         if (stack_start != sp)
8771                                 UNVERIFIED;
8772                         token = read32 (ip + 1);
8773                         /* FIXME: check the signature matches */
8774                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8775
8776                         if (!cmethod || mono_loader_get_last_error ())
8777                                 LOAD_ERROR;
8778
8779                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8780                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8781
8782                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8783
8784                         fsig = mono_method_signature (cmethod);
8785                         n = fsig->param_count + fsig->hasthis;
8786                         if (cfg->llvm_only) {
8787                                 MonoInst **args;
8788
8789                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8790                                 for (i = 0; i < n; ++i)
8791                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8792                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8793                                 /*
8794                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8795                                  * have to emit a normal return since llvm expects it.
8796                                  */
8797                                 if (cfg->ret)
8798                                         emit_setret (cfg, ins);
8799                                 MONO_INST_NEW (cfg, ins, OP_BR);
8800                                 ins->inst_target_bb = end_bblock;
8801                                 MONO_ADD_INS (cfg->cbb, ins);
8802                                 link_bblock (cfg, cfg->cbb, end_bblock);
8803                                 ip += 5;
8804                                 break;
8805                         } else if (cfg->backend->have_op_tail_call) {
8806                                 /* Handle tail calls similarly to calls */
8807                                 DISABLE_AOT (cfg);
8808
8809                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8810                                 call->method = cmethod;
8811                                 call->tail_call = TRUE;
8812                                 call->signature = mono_method_signature (cmethod);
8813                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8814                                 call->inst.inst_p0 = cmethod;
8815                                 for (i = 0; i < n; ++i)
8816                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8817
8818                                 mono_arch_emit_call (cfg, call);
8819                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8820                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8821                         } else {
8822                                 for (i = 0; i < num_args; ++i)
8823                                         /* Prevent arguments from being optimized away */
8824                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8825
8826                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8827                                 ins = (MonoInst*)call;
8828                                 ins->inst_p0 = cmethod;
8829                                 MONO_ADD_INS (cfg->cbb, ins);
8830                         }
8831
8832                         ip += 5;
8833                         start_new_bblock = 1;
8834                         break;
8835                 }
8836                 case CEE_CALLI: {
8837                         MonoInst *addr;
8838                         MonoMethodSignature *fsig;
8839
8840                         CHECK_OPSIZE (5);
8841                         token = read32 (ip + 1);
8842
8843                         ins = NULL;
8844
8845                         //GSHAREDVT_FAILURE (*ip);
8846                         cmethod = NULL;
8847                         CHECK_STACK (1);
8848                         --sp;
8849                         addr = *sp;
8850                         fsig = mini_get_signature (method, token, generic_context);
8851
8852                         if (method->dynamic && fsig->pinvoke) {
8853                                 MonoInst *args [3];
8854
8855                                 /*
8856                                  * This is a call through a function pointer using a pinvoke
8857                                  * signature. Have to create a wrapper and call that instead.
8858                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8859                                  * instead based on the signature.
8860                                  */
8861                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8862                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8863                                 args [2] = addr;
8864                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8865                         }
8866
8867                         n = fsig->param_count + fsig->hasthis;
8868
8869                         CHECK_STACK (n);
8870
8871                         //g_assert (!virtual_ || fsig->hasthis);
8872
8873                         sp -= n;
8874
8875                         inline_costs += 10 * num_calls++;
8876
8877                         /*
8878                          * Making generic calls out of gsharedvt methods.
8879                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8880                          * patching gshared method addresses into a gsharedvt method.
8881                          */
8882                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8883                                 /*
8884                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8885                                  */
8886                                 MonoInst *callee = addr;
8887
8888                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8889                                         /* Not tested */
8890                                         GSHAREDVT_FAILURE (*ip);
8891
8892                                 if (cfg->llvm_only)
8893                                         // FIXME:
8894                                         GSHAREDVT_FAILURE (*ip);
8895
8896                                 addr = emit_get_rgctx_sig (cfg, context_used,
8897                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8898                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8899                                 goto calli_end;
8900                         }
8901
8902                         /* Prevent inlining of methods with indirect calls */
8903                         INLINE_FAILURE ("indirect call");
8904
8905                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8906                                 MonoJumpInfoType info_type;
8907                                 gpointer info_data;
8908
8909                                 /*
8910                                  * Instead of emitting an indirect call, emit a direct call
8911                                  * with the contents of the aotconst as the patch info.
8912                                  */
8913                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8914                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8915                                         info_data = addr->inst_p0;
8916                                 } else {
8917                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8918                                         info_data = addr->inst_right->inst_left;
8919                                 }
8920
8921                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR || info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8922                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8923                                         NULLIFY_INS (addr);
8924                                         goto calli_end;
8925                                 }
8926                         }
8927                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8928
8929                         calli_end:
8930
8931                         /* End of call, INS should contain the result of the call, if any */
8932
8933                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8934                                 g_assert (ins);
8935                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8936                         }
8937
8938                         CHECK_CFG_EXCEPTION;
8939
8940                         ip += 5;
8941                         ins_flag = 0;
8942                         constrained_class = NULL;
8943                         break;
8944                 }
8945                 case CEE_CALL:
8946                 case CEE_CALLVIRT: {
8947                         MonoInst *addr = NULL;
8948                         MonoMethodSignature *fsig = NULL;
8949                         int array_rank = 0;
8950                         int virtual_ = *ip == CEE_CALLVIRT;
8951                         gboolean pass_imt_from_rgctx = FALSE;
8952                         MonoInst *imt_arg = NULL;
8953                         MonoInst *keep_this_alive = NULL;
8954                         gboolean pass_vtable = FALSE;
8955                         gboolean pass_mrgctx = FALSE;
8956                         MonoInst *vtable_arg = NULL;
8957                         gboolean check_this = FALSE;
8958                         gboolean supported_tail_call = FALSE;
8959                         gboolean tail_call = FALSE;
8960                         gboolean need_seq_point = FALSE;
8961                         guint32 call_opcode = *ip;
8962                         gboolean emit_widen = TRUE;
8963                         gboolean push_res = TRUE;
8964                         gboolean skip_ret = FALSE;
8965                         gboolean delegate_invoke = FALSE;
8966                         gboolean direct_icall = FALSE;
8967                         gboolean constrained_partial_call = FALSE;
8968                         MonoMethod *cil_method;
8969
8970                         CHECK_OPSIZE (5);
8971                         token = read32 (ip + 1);
8972
8973                         ins = NULL;
8974
8975                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8976                         cil_method = cmethod;
8977
8978                         if (constrained_class) {
8979                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8980                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8981                                                 g_assert (!cmethod->klass->valuetype);
8982                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8983                                                         constrained_partial_call = TRUE;
8984                                         }
8985                                 }
8986
8987                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8988                                         if (cfg->verbose_level > 2)
8989                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8990                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8991                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8992                                                   cfg->gshared)) {
8993                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8994                                                 CHECK_CFG_ERROR;
8995                                         }
8996                                 } else {
8997                                         if (cfg->verbose_level > 2)
8998                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8999
9000                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9001                                                 /*
9002                                                  * This is needed since get_method_constrained can't find
9003                                                  * the method in klass representing a type var.
9004                                                  * The type var is guaranteed to be a reference type in this
9005                                                  * case.
9006                                                  */
9007                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9008                                                         g_assert (!cmethod->klass->valuetype);
9009                                         } else {
9010                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9011                                                 CHECK_CFG_ERROR;
9012                                         }
9013                                 }
9014                         }
9015
9016                         if (!cmethod || mono_loader_get_last_error ())
9017                                 LOAD_ERROR;
9018                         if (!dont_verify && !cfg->skip_visibility) {
9019                                 MonoMethod *target_method = cil_method;
9020                                 if (method->is_inflated) {
9021                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
9022                                 }
9023                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9024                                         !mono_method_can_access_method (method, cil_method))
9025                                         METHOD_ACCESS_FAILURE (method, cil_method);
9026                         }
9027
9028                         if (mono_security_core_clr_enabled ())
9029                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9030
9031                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9032                                 /* MS.NET seems to silently convert this to a callvirt */
9033                                 virtual_ = 1;
9034
9035                         {
9036                                 /*
9037                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9038                                  * converts to a callvirt.
9039                                  *
9040                                  * tests/bug-515884.il is an example of this behavior
9041                                  */
9042                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9043                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9044                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9045                                         virtual_ = 1;
9046                         }
9047
9048                         if (!cmethod->klass->inited)
9049                                 if (!mono_class_init (cmethod->klass))
9050                                         TYPE_LOAD_ERROR (cmethod->klass);
9051
9052                         fsig = mono_method_signature (cmethod);
9053                         if (!fsig)
9054                                 LOAD_ERROR;
9055                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9056                                 mini_class_is_system_array (cmethod->klass)) {
9057                                 array_rank = cmethod->klass->rank;
9058                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9059                                 direct_icall = TRUE;
9060                         } else if (fsig->pinvoke) {
9061                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9062                                 fsig = mono_method_signature (wrapper);
9063                         } else if (constrained_class) {
9064                         } else {
9065                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9066                                 CHECK_CFG_ERROR;
9067                         }
9068
9069                         if (cfg->llvm_only && !cfg->method->wrapper_type)
9070                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9071
9072                         /* See code below */
9073                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9074                                 MonoBasicBlock *tbb;
9075
9076                                 GET_BBLOCK (cfg, tbb, ip + 5);
9077                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9078                                         /*
9079                                          * We want to extend the try block to cover the call, but we can't do it if the
9080                                          * call is made directly since its followed by an exception check.
9081                                          */
9082                                         direct_icall = FALSE;
9083                                 }
9084                         }
9085
9086                         mono_save_token_info (cfg, image, token, cil_method);
9087
9088                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9089                                 need_seq_point = TRUE;
9090
9091                         /* Don't support calls made using type arguments for now */
9092                         /*
9093                           if (cfg->gsharedvt) {
9094                           if (mini_is_gsharedvt_signature (fsig))
9095                           GSHAREDVT_FAILURE (*ip);
9096                           }
9097                         */
9098
9099                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9100                                 g_assert_not_reached ();
9101
9102                         n = fsig->param_count + fsig->hasthis;
9103
9104                         if (!cfg->gshared && cmethod->klass->generic_container)
9105                                 UNVERIFIED;
9106
9107                         if (!cfg->gshared)
9108                                 g_assert (!mono_method_check_context_used (cmethod));
9109
9110                         CHECK_STACK (n);
9111
9112                         //g_assert (!virtual_ || fsig->hasthis);
9113
9114                         sp -= n;
9115
9116                         /*
9117                          * We have the `constrained.' prefix opcode.
9118                          */
9119                         if (constrained_class) {
9120                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9121                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9122                                                 /* The 'Own method' case below */
9123                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9124                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9125                                         } else {
9126                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9127                                                 CHECK_CFG_EXCEPTION;
9128                                                 g_assert (ins);
9129                                                 goto call_end;
9130                                         }
9131                                 }
9132
9133                                 if (constrained_partial_call) {
9134                                         gboolean need_box = TRUE;
9135
9136                                         /*
9137                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9138                                          * called method is not known at compile time either. The called method could end up being
9139                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9140                                          * to box the receiver.
9141                                          * A simple solution would be to box always and make a normal virtual call, but that would
9142                                          * be bad performance wise.
9143                                          */
9144                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9145                                                 /*
9146                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9147                                                  */
9148                                                 need_box = FALSE;
9149                                         }
9150
9151                                         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)) {
9152                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9153                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9154                                                 ins->klass = constrained_class;
9155                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9156                                                 CHECK_CFG_EXCEPTION;
9157                                         } else if (need_box) {
9158                                                 MonoInst *box_type;
9159                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9160                                                 MonoInst *nonbox_call;
9161
9162                                                 /*
9163                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9164                                                  * if needed.
9165                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9166                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9167                                                  */
9168                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9169
9170                                                 NEW_BBLOCK (cfg, is_ref_bb);
9171                                                 NEW_BBLOCK (cfg, end_bb);
9172
9173                                                 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);
9174                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9175                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9176
9177                                                 /* Non-ref case */
9178                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9179
9180                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9181
9182                                                 /* Ref case */
9183                                                 MONO_START_BB (cfg, is_ref_bb);
9184                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9185                                                 ins->klass = constrained_class;
9186                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9187                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9188
9189                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9190
9191                                                 MONO_START_BB (cfg, end_bb);
9192                                                 cfg->cbb = end_bb;
9193
9194                                                 nonbox_call->dreg = ins->dreg;
9195                                                 goto call_end;
9196                                         } else {
9197                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9198                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9199                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9200                                                 goto call_end;
9201                                         }
9202                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9203                                         /*
9204                                          * The type parameter is instantiated as a valuetype,
9205                                          * but that type doesn't override the method we're
9206                                          * calling, so we need to box `this'.
9207                                          */
9208                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9209                                         ins->klass = constrained_class;
9210                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9211                                         CHECK_CFG_EXCEPTION;
9212                                 } else if (!constrained_class->valuetype) {
9213                                         int dreg = alloc_ireg_ref (cfg);
9214
9215                                         /*
9216                                          * The type parameter is instantiated as a reference
9217                                          * type.  We have a managed pointer on the stack, so
9218                                          * we need to dereference it here.
9219                                          */
9220                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9221                                         ins->type = STACK_OBJ;
9222                                         sp [0] = ins;
9223                                 } else {
9224                                         if (cmethod->klass->valuetype) {
9225                                                 /* Own method */
9226                                         } else {
9227                                                 /* Interface method */
9228                                                 int ioffset, slot;
9229
9230                                                 mono_class_setup_vtable (constrained_class);
9231                                                 CHECK_TYPELOAD (constrained_class);
9232                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9233                                                 if (ioffset == -1)
9234                                                         TYPE_LOAD_ERROR (constrained_class);
9235                                                 slot = mono_method_get_vtable_slot (cmethod);
9236                                                 if (slot == -1)
9237                                                         TYPE_LOAD_ERROR (cmethod->klass);
9238                                                 cmethod = constrained_class->vtable [ioffset + slot];
9239
9240                                                 if (cmethod->klass == mono_defaults.enum_class) {
9241                                                         /* Enum implements some interfaces, so treat this as the first case */
9242                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9243                                                         ins->klass = constrained_class;
9244                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9245                                                         CHECK_CFG_EXCEPTION;
9246                                                 }
9247                                         }
9248                                         virtual_ = 0;
9249                                 }
9250                                 constrained_class = NULL;
9251                         }
9252
9253                         if (check_call_signature (cfg, fsig, sp))
9254                                 UNVERIFIED;
9255
9256                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9257                                 delegate_invoke = TRUE;
9258
9259                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9260                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9261                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9262                                         emit_widen = FALSE;
9263                                 }
9264
9265                                 goto call_end;
9266                         }
9267
9268                         /*
9269                          * If the callee is a shared method, then its static cctor
9270                          * might not get called after the call was patched.
9271                          */
9272                         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)) {
9273                                 emit_class_init (cfg, cmethod->klass);
9274                                 CHECK_TYPELOAD (cmethod->klass);
9275                         }
9276
9277                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9278
9279                         if (cfg->gshared) {
9280                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9281
9282                                 context_used = mini_method_check_context_used (cfg, cmethod);
9283
9284                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9285                                         /* Generic method interface
9286                                            calls are resolved via a
9287                                            helper function and don't
9288                                            need an imt. */
9289                                         if (!cmethod_context || !cmethod_context->method_inst)
9290                                                 pass_imt_from_rgctx = TRUE;
9291                                 }
9292
9293                                 /*
9294                                  * If a shared method calls another
9295                                  * shared method then the caller must
9296                                  * have a generic sharing context
9297                                  * because the magic trampoline
9298                                  * requires it.  FIXME: We shouldn't
9299                                  * have to force the vtable/mrgctx
9300                                  * variable here.  Instead there
9301                                  * should be a flag in the cfg to
9302                                  * request a generic sharing context.
9303                                  */
9304                                 if (context_used &&
9305                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9306                                         mono_get_vtable_var (cfg);
9307                         }
9308
9309                         if (pass_vtable) {
9310                                 if (context_used) {
9311                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9312                                 } else {
9313                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9314
9315                                         CHECK_TYPELOAD (cmethod->klass);
9316                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9317                                 }
9318                         }
9319
9320                         if (pass_mrgctx) {
9321                                 g_assert (!vtable_arg);
9322
9323                                 if (!cfg->compile_aot) {
9324                                         /*
9325                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9326                                          * for type load errors before.
9327                                          */
9328                                         mono_class_setup_vtable (cmethod->klass);
9329                                         CHECK_TYPELOAD (cmethod->klass);
9330                                 }
9331
9332                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9333
9334                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9335                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9336                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9337                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9338                                         if (virtual_)
9339                                                 check_this = TRUE;
9340                                         virtual_ = 0;
9341                                 }
9342                         }
9343
9344                         if (pass_imt_from_rgctx) {
9345                                 g_assert (!pass_vtable);
9346
9347                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9348                                         cmethod, MONO_RGCTX_INFO_METHOD);
9349                         }
9350
9351                         if (check_this)
9352                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9353
9354                         /* Calling virtual generic methods */
9355                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9356                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9357                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9358                             fsig->generic_param_count &&
9359                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9360                                 !cfg->llvm_only) {
9361                                 MonoInst *this_temp, *this_arg_temp, *store;
9362                                 MonoInst *iargs [4];
9363
9364                                 g_assert (fsig->is_inflated);
9365
9366                                 /* Prevent inlining of methods that contain indirect calls */
9367                                 INLINE_FAILURE ("virtual generic call");
9368
9369                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9370                                         GSHAREDVT_FAILURE (*ip);
9371
9372                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9373                                         g_assert (!imt_arg);
9374                                         if (!context_used)
9375                                                 g_assert (cmethod->is_inflated);
9376                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9377                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9378                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9379                                 } else {
9380                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9381                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9382                                         MONO_ADD_INS (cfg->cbb, store);
9383
9384                                         /* FIXME: This should be a managed pointer */
9385                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9386
9387                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9388                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9389                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9390                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9391                                         addr = mono_emit_jit_icall (cfg,
9392                                                                                                 mono_helper_compile_generic_method, iargs);
9393
9394                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9395
9396                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9397                                 }
9398
9399                                 goto call_end;
9400                         }
9401
9402                         /*
9403                          * Implement a workaround for the inherent races involved in locking:
9404                          * Monitor.Enter ()
9405                          * try {
9406                          * } finally {
9407                          *    Monitor.Exit ()
9408                          * }
9409                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9410                          * try block, the Exit () won't be executed, see:
9411                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9412                          * To work around this, we extend such try blocks to include the last x bytes
9413                          * of the Monitor.Enter () call.
9414                          */
9415                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9416                                 MonoBasicBlock *tbb;
9417
9418                                 GET_BBLOCK (cfg, tbb, ip + 5);
9419                                 /*
9420                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9421                                  * from Monitor.Enter like ArgumentNullException.
9422                                  */
9423                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9424                                         /* Mark this bblock as needing to be extended */
9425                                         tbb->extend_try_block = TRUE;
9426                                 }
9427                         }
9428
9429                         /* Conversion to a JIT intrinsic */
9430                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9431                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9432                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9433                                         emit_widen = FALSE;
9434                                 }
9435                                 goto call_end;
9436                         }
9437
9438                         /* Inlining */
9439                         if ((cfg->opt & MONO_OPT_INLINE) &&
9440                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9441                             mono_method_check_inlining (cfg, cmethod)) {
9442                                 int costs;
9443                                 gboolean always = FALSE;
9444
9445                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9446                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9447                                         /* Prevent inlining of methods that call wrappers */
9448                                         INLINE_FAILURE ("wrapper call");
9449                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9450                                         always = TRUE;
9451                                 }
9452
9453                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9454                                 if (costs) {
9455                                         cfg->real_offset += 5;
9456
9457                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9458                                                 /* *sp is already set by inline_method */
9459                                                 sp++;
9460                                                 push_res = FALSE;
9461                                         }
9462
9463                                         inline_costs += costs;
9464
9465                                         goto call_end;
9466                                 }
9467                         }
9468
9469                         /* Tail recursion elimination */
9470                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9471                                 gboolean has_vtargs = FALSE;
9472                                 int i;
9473
9474                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9475                                 INLINE_FAILURE ("tail call");
9476
9477                                 /* keep it simple */
9478                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9479                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9480                                                 has_vtargs = TRUE;
9481                                 }
9482
9483                                 if (!has_vtargs) {
9484                                         for (i = 0; i < n; ++i)
9485                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9486                                         MONO_INST_NEW (cfg, ins, OP_BR);
9487                                         MONO_ADD_INS (cfg->cbb, ins);
9488                                         tblock = start_bblock->out_bb [0];
9489                                         link_bblock (cfg, cfg->cbb, tblock);
9490                                         ins->inst_target_bb = tblock;
9491                                         start_new_bblock = 1;
9492
9493                                         /* skip the CEE_RET, too */
9494                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9495                                                 skip_ret = TRUE;
9496                                         push_res = FALSE;
9497                                         goto call_end;
9498                                 }
9499                         }
9500
9501                         inline_costs += 10 * num_calls++;
9502
9503                         /*
9504                          * Making generic calls out of gsharedvt methods.
9505                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9506                          * patching gshared method addresses into a gsharedvt method.
9507                          */
9508                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9509                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9510                                 (!(cfg->llvm_only && virtual_))) {
9511                                 MonoRgctxInfoType info_type;
9512
9513                                 if (virtual_) {
9514                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9515                                                 //GSHAREDVT_FAILURE (*ip);
9516                                         // disable for possible remoting calls
9517                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9518                                                 GSHAREDVT_FAILURE (*ip);
9519                                         if (fsig->generic_param_count) {
9520                                                 /* virtual generic call */
9521                                                 g_assert (!imt_arg);
9522                                                 /* Same as the virtual generic case above */
9523                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9524                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9525                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9526                                                 vtable_arg = NULL;
9527                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9528                                                 /* This can happen when we call a fully instantiated iface method */
9529                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9530                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9531                                                 vtable_arg = NULL;
9532                                         }
9533                                 }
9534
9535                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9536                                         keep_this_alive = sp [0];
9537
9538                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9539                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9540                                 else
9541                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9542                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9543
9544                                 if (cfg->llvm_only) {
9545                                         // FIXME: Avoid initializing vtable_arg
9546                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9547                                 } else {
9548                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9549                                 }
9550                                 goto call_end;
9551                         }
9552
9553                         /* Generic sharing */
9554
9555                         /*
9556                          * Use this if the callee is gsharedvt sharable too, since
9557                          * at runtime we might find an instantiation so the call cannot
9558                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9559                          */
9560                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9561                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9562                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9563                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9564                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9565                                 INLINE_FAILURE ("gshared");
9566
9567                                 g_assert (cfg->gshared && cmethod);
9568                                 g_assert (!addr);
9569
9570                                 /*
9571                                  * We are compiling a call to a
9572                                  * generic method from shared code,
9573                                  * which means that we have to look up
9574                                  * the method in the rgctx and do an
9575                                  * indirect call.
9576                                  */
9577                                 if (fsig->hasthis)
9578                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9579
9580                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9581                                 if (cfg->llvm_only) {
9582                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9583                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9584                                 } else {
9585                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9586                                 }
9587                                 goto call_end;
9588                         }
9589
9590                         /* Direct calls to icalls */
9591                         if (direct_icall) {
9592                                 MonoMethod *wrapper;
9593                                 int costs;
9594
9595                                 /* Inline the wrapper */
9596                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9597
9598                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9599                                 g_assert (costs > 0);
9600                                 cfg->real_offset += 5;
9601
9602                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9603                                         /* *sp is already set by inline_method */
9604                                         sp++;
9605                                         push_res = FALSE;
9606                                 }
9607
9608                                 inline_costs += costs;
9609
9610                                 goto call_end;
9611                         }
9612
9613                         /* Array methods */
9614                         if (array_rank) {
9615                                 MonoInst *addr;
9616
9617                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9618                                         MonoInst *val = sp [fsig->param_count];
9619
9620                                         if (val->type == STACK_OBJ) {
9621                                                 MonoInst *iargs [2];
9622
9623                                                 iargs [0] = sp [0];
9624                                                 iargs [1] = val;
9625
9626                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9627                                         }
9628
9629                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9630                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9631                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9632                                                 emit_write_barrier (cfg, addr, val);
9633                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9634                                                 GSHAREDVT_FAILURE (*ip);
9635                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9636                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9637
9638                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9639                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9640                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9641                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9642                                         CHECK_TYPELOAD (cmethod->klass);
9643
9644                                         readonly = FALSE;
9645                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9646                                         ins = addr;
9647                                 } else {
9648                                         g_assert_not_reached ();
9649                                 }
9650
9651                                 emit_widen = FALSE;
9652                                 goto call_end;
9653                         }
9654
9655                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9656                         if (ins)
9657                                 goto call_end;
9658
9659                         /* Tail prefix / tail call optimization */
9660
9661                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9662                         /* FIXME: runtime generic context pointer for jumps? */
9663                         /* FIXME: handle this for generic sharing eventually */
9664                         if ((ins_flag & MONO_INST_TAILCALL) &&
9665                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9666                                 supported_tail_call = TRUE;
9667
9668                         if (supported_tail_call) {
9669                                 MonoCallInst *call;
9670
9671                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9672                                 INLINE_FAILURE ("tail call");
9673
9674                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9675
9676                                 if (cfg->backend->have_op_tail_call) {
9677                                         /* Handle tail calls similarly to normal calls */
9678                                         tail_call = TRUE;
9679                                 } else {
9680                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9681
9682                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9683                                         call->tail_call = TRUE;
9684                                         call->method = cmethod;
9685                                         call->signature = mono_method_signature (cmethod);
9686
9687                                         /*
9688                                          * We implement tail calls by storing the actual arguments into the
9689                                          * argument variables, then emitting a CEE_JMP.
9690                                          */
9691                                         for (i = 0; i < n; ++i) {
9692                                                 /* Prevent argument from being register allocated */
9693                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9694                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9695                                         }
9696                                         ins = (MonoInst*)call;
9697                                         ins->inst_p0 = cmethod;
9698                                         ins->inst_p1 = arg_array [0];
9699                                         MONO_ADD_INS (cfg->cbb, ins);
9700                                         link_bblock (cfg, cfg->cbb, end_bblock);
9701                                         start_new_bblock = 1;
9702
9703                                         // FIXME: Eliminate unreachable epilogs
9704
9705                                         /*
9706                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9707                                          * only reachable from this call.
9708                                          */
9709                                         GET_BBLOCK (cfg, tblock, ip + 5);
9710                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9711                                                 skip_ret = TRUE;
9712                                         push_res = FALSE;
9713
9714                                         goto call_end;
9715                                 }
9716                         }
9717
9718                         /*
9719                          * Synchronized wrappers.
9720                          * Its hard to determine where to replace a method with its synchronized
9721                          * wrapper without causing an infinite recursion. The current solution is
9722                          * to add the synchronized wrapper in the trampolines, and to
9723                          * change the called method to a dummy wrapper, and resolve that wrapper
9724                          * to the real method in mono_jit_compile_method ().
9725                          */
9726                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9727                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9728                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9729                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9730                         }
9731
9732                         /*
9733                          * Virtual calls in llvm-only mode.
9734                          */
9735                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9736                                 MonoInst *icall_args [16];
9737                                 MonoInst *call_target;
9738                                 int arg_reg;
9739                                 gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
9740
9741                                 MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
9742
9743                                 // FIXME: Optimize this
9744
9745                                 guint32 slot;
9746
9747                                 if (is_iface)
9748                                         slot = mono_method_get_imt_slot (cmethod);
9749                                 else
9750                                         slot = mono_method_get_vtable_index (cmethod);
9751
9752                                 icall_args [0] = sp [0];
9753                                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
9754
9755                                 if (fsig->generic_param_count) {
9756                                         /* virtual generic call */
9757                                         g_assert (!imt_arg);
9758                                         /* Same as the virtual generic case above */
9759                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9760                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9761                                         icall_args [2] = imt_arg;
9762                                 } else if (imt_arg) {
9763                                         icall_args [2] = imt_arg;
9764                                 } else {
9765                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_METHODCONST, cmethod);
9766                                         icall_args [2] = ins;
9767                                 }
9768
9769                                 // FIXME: For generic virtual calls, avoid computing the rgctx twice
9770
9771                                 arg_reg = alloc_preg (cfg);
9772                                 MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
9773                                 EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
9774
9775                                 if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
9776                                         /*
9777                                          * We handle virtual calls made from gsharedvt methods here instead
9778                                          * of the gsharedvt block above.
9779                                          */
9780                                         if (is_iface)
9781                                                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
9782                                         else
9783                                                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
9784                                 } else {
9785                                         if (is_iface)
9786                                                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call, icall_args);
9787                                         else
9788                                                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall, icall_args);
9789                                 }
9790
9791                                 /*
9792                                  * Pass the extra argument even if the callee doesn't receive it, most calling
9793                                  * calling conventions allow this.
9794                                  */
9795                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
9796                                 goto call_end;
9797                         }
9798
9799                         /* Common call */
9800                         INLINE_FAILURE ("call");
9801                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9802                                                                                           imt_arg, vtable_arg);
9803
9804                         if (tail_call && !cfg->llvm_only) {
9805                                 link_bblock (cfg, cfg->cbb, end_bblock);
9806                                 start_new_bblock = 1;
9807
9808                                 // FIXME: Eliminate unreachable epilogs
9809
9810                                 /*
9811                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9812                                  * only reachable from this call.
9813                                  */
9814                                 GET_BBLOCK (cfg, tblock, ip + 5);
9815                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9816                                         skip_ret = TRUE;
9817                                 push_res = FALSE;
9818                         }
9819
9820                         call_end:
9821
9822                         /* End of call, INS should contain the result of the call, if any */
9823
9824                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9825                                 g_assert (ins);
9826                                 if (emit_widen)
9827                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9828                                 else
9829                                         *sp++ = ins;
9830                         }
9831
9832                         if (keep_this_alive) {
9833                                 MonoInst *dummy_use;
9834
9835                                 /* See mono_emit_method_call_full () */
9836                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9837                         }
9838
9839                         CHECK_CFG_EXCEPTION;
9840
9841                         ip += 5;
9842                         if (skip_ret) {
9843                                 g_assert (*ip == CEE_RET);
9844                                 ip += 1;
9845                         }
9846                         ins_flag = 0;
9847                         constrained_class = NULL;
9848                         if (need_seq_point)
9849                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9850                         break;
9851                 }
9852                 case CEE_RET:
9853                         if (cfg->method != method) {
9854                                 /* return from inlined method */
9855                                 /*
9856                                  * If in_count == 0, that means the ret is unreachable due to
9857                                  * being preceeded by a throw. In that case, inline_method () will
9858                                  * handle setting the return value
9859                                  * (test case: test_0_inline_throw ()).
9860                                  */
9861                                 if (return_var && cfg->cbb->in_count) {
9862                                         MonoType *ret_type = mono_method_signature (method)->ret;
9863
9864                                         MonoInst *store;
9865                                         CHECK_STACK (1);
9866                                         --sp;
9867
9868                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9869                                                 UNVERIFIED;
9870
9871                                         //g_assert (returnvar != -1);
9872                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9873                                         cfg->ret_var_set = TRUE;
9874                                 }
9875                         } else {
9876                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9877
9878                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9879                                         emit_pop_lmf (cfg);
9880
9881                                 if (cfg->ret) {
9882                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9883
9884                                         if (seq_points && !sym_seq_points) {
9885                                                 /*
9886                                                  * Place a seq point here too even through the IL stack is not
9887                                                  * empty, so a step over on
9888                                                  * call <FOO>
9889                                                  * ret
9890                                                  * will work correctly.
9891                                                  */
9892                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9893                                                 MONO_ADD_INS (cfg->cbb, ins);
9894                                         }
9895
9896                                         g_assert (!return_var);
9897                                         CHECK_STACK (1);
9898                                         --sp;
9899
9900                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9901                                                 UNVERIFIED;
9902
9903                                         emit_setret (cfg, *sp);
9904                                 }
9905                         }
9906                         if (sp != stack_start)
9907                                 UNVERIFIED;
9908                         MONO_INST_NEW (cfg, ins, OP_BR);
9909                         ip++;
9910                         ins->inst_target_bb = end_bblock;
9911                         MONO_ADD_INS (cfg->cbb, ins);
9912                         link_bblock (cfg, cfg->cbb, end_bblock);
9913                         start_new_bblock = 1;
9914                         break;
9915                 case CEE_BR_S:
9916                         CHECK_OPSIZE (2);
9917                         MONO_INST_NEW (cfg, ins, OP_BR);
9918                         ip++;
9919                         target = ip + 1 + (signed char)(*ip);
9920                         ++ip;
9921                         GET_BBLOCK (cfg, tblock, target);
9922                         link_bblock (cfg, cfg->cbb, tblock);
9923                         ins->inst_target_bb = tblock;
9924                         if (sp != stack_start) {
9925                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9926                                 sp = stack_start;
9927                                 CHECK_UNVERIFIABLE (cfg);
9928                         }
9929                         MONO_ADD_INS (cfg->cbb, ins);
9930                         start_new_bblock = 1;
9931                         inline_costs += BRANCH_COST;
9932                         break;
9933                 case CEE_BEQ_S:
9934                 case CEE_BGE_S:
9935                 case CEE_BGT_S:
9936                 case CEE_BLE_S:
9937                 case CEE_BLT_S:
9938                 case CEE_BNE_UN_S:
9939                 case CEE_BGE_UN_S:
9940                 case CEE_BGT_UN_S:
9941                 case CEE_BLE_UN_S:
9942                 case CEE_BLT_UN_S:
9943                         CHECK_OPSIZE (2);
9944                         CHECK_STACK (2);
9945                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9946                         ip++;
9947                         target = ip + 1 + *(signed char*)ip;
9948                         ip++;
9949
9950                         ADD_BINCOND (NULL);
9951
9952                         sp = stack_start;
9953                         inline_costs += BRANCH_COST;
9954                         break;
9955                 case CEE_BR:
9956                         CHECK_OPSIZE (5);
9957                         MONO_INST_NEW (cfg, ins, OP_BR);
9958                         ip++;
9959
9960                         target = ip + 4 + (gint32)read32(ip);
9961                         ip += 4;
9962                         GET_BBLOCK (cfg, tblock, target);
9963                         link_bblock (cfg, cfg->cbb, tblock);
9964                         ins->inst_target_bb = tblock;
9965                         if (sp != stack_start) {
9966                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9967                                 sp = stack_start;
9968                                 CHECK_UNVERIFIABLE (cfg);
9969                         }
9970
9971                         MONO_ADD_INS (cfg->cbb, ins);
9972
9973                         start_new_bblock = 1;
9974                         inline_costs += BRANCH_COST;
9975                         break;
9976                 case CEE_BRFALSE_S:
9977                 case CEE_BRTRUE_S:
9978                 case CEE_BRFALSE:
9979                 case CEE_BRTRUE: {
9980                         MonoInst *cmp;
9981                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9982                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9983                         guint32 opsize = is_short ? 1 : 4;
9984
9985                         CHECK_OPSIZE (opsize);
9986                         CHECK_STACK (1);
9987                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9988                                 UNVERIFIED;
9989                         ip ++;
9990                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9991                         ip += opsize;
9992
9993                         sp--;
9994
9995                         GET_BBLOCK (cfg, tblock, target);
9996                         link_bblock (cfg, cfg->cbb, tblock);
9997                         GET_BBLOCK (cfg, tblock, ip);
9998                         link_bblock (cfg, cfg->cbb, tblock);
9999
10000                         if (sp != stack_start) {
10001                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10002                                 CHECK_UNVERIFIABLE (cfg);
10003                         }
10004
10005                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10006                         cmp->sreg1 = sp [0]->dreg;
10007                         type_from_op (cfg, cmp, sp [0], NULL);
10008                         CHECK_TYPE (cmp);
10009
10010 #if SIZEOF_REGISTER == 4
10011                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10012                                 /* Convert it to OP_LCOMPARE */
10013                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10014                                 ins->type = STACK_I8;
10015                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10016                                 ins->inst_l = 0;
10017                                 MONO_ADD_INS (cfg->cbb, ins);
10018                                 cmp->opcode = OP_LCOMPARE;
10019                                 cmp->sreg2 = ins->dreg;
10020                         }
10021 #endif
10022                         MONO_ADD_INS (cfg->cbb, cmp);
10023
10024                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10025                         type_from_op (cfg, ins, sp [0], NULL);
10026                         MONO_ADD_INS (cfg->cbb, ins);
10027                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10028                         GET_BBLOCK (cfg, tblock, target);
10029                         ins->inst_true_bb = tblock;
10030                         GET_BBLOCK (cfg, tblock, ip);
10031                         ins->inst_false_bb = tblock;
10032                         start_new_bblock = 2;
10033
10034                         sp = stack_start;
10035                         inline_costs += BRANCH_COST;
10036                         break;
10037                 }
10038                 case CEE_BEQ:
10039                 case CEE_BGE:
10040                 case CEE_BGT:
10041                 case CEE_BLE:
10042                 case CEE_BLT:
10043                 case CEE_BNE_UN:
10044                 case CEE_BGE_UN:
10045                 case CEE_BGT_UN:
10046                 case CEE_BLE_UN:
10047                 case CEE_BLT_UN:
10048                         CHECK_OPSIZE (5);
10049                         CHECK_STACK (2);
10050                         MONO_INST_NEW (cfg, ins, *ip);
10051                         ip++;
10052                         target = ip + 4 + (gint32)read32(ip);
10053                         ip += 4;
10054
10055                         ADD_BINCOND (NULL);
10056
10057                         sp = stack_start;
10058                         inline_costs += BRANCH_COST;
10059                         break;
10060                 case CEE_SWITCH: {
10061                         MonoInst *src1;
10062                         MonoBasicBlock **targets;
10063                         MonoBasicBlock *default_bblock;
10064                         MonoJumpInfoBBTable *table;
10065                         int offset_reg = alloc_preg (cfg);
10066                         int target_reg = alloc_preg (cfg);
10067                         int table_reg = alloc_preg (cfg);
10068                         int sum_reg = alloc_preg (cfg);
10069                         gboolean use_op_switch;
10070
10071                         CHECK_OPSIZE (5);
10072                         CHECK_STACK (1);
10073                         n = read32 (ip + 1);
10074                         --sp;
10075                         src1 = sp [0];
10076                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10077                                 UNVERIFIED;
10078
10079                         ip += 5;
10080                         CHECK_OPSIZE (n * sizeof (guint32));
10081                         target = ip + n * sizeof (guint32);
10082
10083                         GET_BBLOCK (cfg, default_bblock, target);
10084                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10085
10086                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10087                         for (i = 0; i < n; ++i) {
10088                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10089                                 targets [i] = tblock;
10090                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10091                                 ip += 4;
10092                         }
10093
10094                         if (sp != stack_start) {
10095                                 /*
10096                                  * Link the current bb with the targets as well, so handle_stack_args
10097                                  * will set their in_stack correctly.
10098                                  */
10099                                 link_bblock (cfg, cfg->cbb, default_bblock);
10100                                 for (i = 0; i < n; ++i)
10101                                         link_bblock (cfg, cfg->cbb, targets [i]);
10102
10103                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10104                                 sp = stack_start;
10105                                 CHECK_UNVERIFIABLE (cfg);
10106
10107                                 /* Undo the links */
10108                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10109                                 for (i = 0; i < n; ++i)
10110                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10111                         }
10112
10113                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10114                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10115
10116                         for (i = 0; i < n; ++i)
10117                                 link_bblock (cfg, cfg->cbb, targets [i]);
10118
10119                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10120                         table->table = targets;
10121                         table->table_size = n;
10122
10123                         use_op_switch = FALSE;
10124 #ifdef TARGET_ARM
10125                         /* ARM implements SWITCH statements differently */
10126                         /* FIXME: Make it use the generic implementation */
10127                         if (!cfg->compile_aot)
10128                                 use_op_switch = TRUE;
10129 #endif
10130
10131                         if (COMPILE_LLVM (cfg))
10132                                 use_op_switch = TRUE;
10133
10134                         cfg->cbb->has_jump_table = 1;
10135
10136                         if (use_op_switch) {
10137                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10138                                 ins->sreg1 = src1->dreg;
10139                                 ins->inst_p0 = table;
10140                                 ins->inst_many_bb = targets;
10141                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10142                                 MONO_ADD_INS (cfg->cbb, ins);
10143                         } else {
10144                                 if (sizeof (gpointer) == 8)
10145                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10146                                 else
10147                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10148
10149 #if SIZEOF_REGISTER == 8
10150                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10151                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10152 #endif
10153
10154                                 if (cfg->compile_aot) {
10155                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10156                                 } else {
10157                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10158                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10159                                         ins->inst_p0 = table;
10160                                         ins->dreg = table_reg;
10161                                         MONO_ADD_INS (cfg->cbb, ins);
10162                                 }
10163
10164                                 /* FIXME: Use load_memindex */
10165                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10166                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10167                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10168                         }
10169                         start_new_bblock = 1;
10170                         inline_costs += (BRANCH_COST * 2);
10171                         break;
10172                 }
10173                 case CEE_LDIND_I1:
10174                 case CEE_LDIND_U1:
10175                 case CEE_LDIND_I2:
10176                 case CEE_LDIND_U2:
10177                 case CEE_LDIND_I4:
10178                 case CEE_LDIND_U4:
10179                 case CEE_LDIND_I8:
10180                 case CEE_LDIND_I:
10181                 case CEE_LDIND_R4:
10182                 case CEE_LDIND_R8:
10183                 case CEE_LDIND_REF:
10184                         CHECK_STACK (1);
10185                         --sp;
10186
10187                         switch (*ip) {
10188                         case CEE_LDIND_R4:
10189                         case CEE_LDIND_R8:
10190                                 dreg = alloc_freg (cfg);
10191                                 break;
10192                         case CEE_LDIND_I8:
10193                                 dreg = alloc_lreg (cfg);
10194                                 break;
10195                         case CEE_LDIND_REF:
10196                                 dreg = alloc_ireg_ref (cfg);
10197                                 break;
10198                         default:
10199                                 dreg = alloc_preg (cfg);
10200                         }
10201
10202                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10203                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10204                         if (*ip == CEE_LDIND_R4)
10205                                 ins->type = cfg->r4_stack_type;
10206                         ins->flags |= ins_flag;
10207                         MONO_ADD_INS (cfg->cbb, ins);
10208                         *sp++ = ins;
10209                         if (ins_flag & MONO_INST_VOLATILE) {
10210                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10211                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10212                         }
10213                         ins_flag = 0;
10214                         ++ip;
10215                         break;
10216                 case CEE_STIND_REF:
10217                 case CEE_STIND_I1:
10218                 case CEE_STIND_I2:
10219                 case CEE_STIND_I4:
10220                 case CEE_STIND_I8:
10221                 case CEE_STIND_R4:
10222                 case CEE_STIND_R8:
10223                 case CEE_STIND_I:
10224                         CHECK_STACK (2);
10225                         sp -= 2;
10226
10227                         if (ins_flag & MONO_INST_VOLATILE) {
10228                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10229                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10230                         }
10231
10232                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10233                         ins->flags |= ins_flag;
10234                         ins_flag = 0;
10235
10236                         MONO_ADD_INS (cfg->cbb, ins);
10237
10238                         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)))
10239                                 emit_write_barrier (cfg, sp [0], sp [1]);
10240
10241                         inline_costs += 1;
10242                         ++ip;
10243                         break;
10244
10245                 case CEE_MUL:
10246                         CHECK_STACK (2);
10247
10248                         MONO_INST_NEW (cfg, ins, (*ip));
10249                         sp -= 2;
10250                         ins->sreg1 = sp [0]->dreg;
10251                         ins->sreg2 = sp [1]->dreg;
10252                         type_from_op (cfg, ins, sp [0], sp [1]);
10253                         CHECK_TYPE (ins);
10254                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10255
10256                         /* Use the immediate opcodes if possible */
10257                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10258                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10259                                 if (imm_opcode != -1) {
10260                                         ins->opcode = imm_opcode;
10261                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10262                                         ins->sreg2 = -1;
10263
10264                                         NULLIFY_INS (sp [1]);
10265                                 }
10266                         }
10267
10268                         MONO_ADD_INS ((cfg)->cbb, (ins));
10269
10270                         *sp++ = mono_decompose_opcode (cfg, ins);
10271                         ip++;
10272                         break;
10273                 case CEE_ADD:
10274                 case CEE_SUB:
10275                 case CEE_DIV:
10276                 case CEE_DIV_UN:
10277                 case CEE_REM:
10278                 case CEE_REM_UN:
10279                 case CEE_AND:
10280                 case CEE_OR:
10281                 case CEE_XOR:
10282                 case CEE_SHL:
10283                 case CEE_SHR:
10284                 case CEE_SHR_UN:
10285                         CHECK_STACK (2);
10286
10287                         MONO_INST_NEW (cfg, ins, (*ip));
10288                         sp -= 2;
10289                         ins->sreg1 = sp [0]->dreg;
10290                         ins->sreg2 = sp [1]->dreg;
10291                         type_from_op (cfg, ins, sp [0], sp [1]);
10292                         CHECK_TYPE (ins);
10293                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10294                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10295
10296                         /* FIXME: Pass opcode to is_inst_imm */
10297
10298                         /* Use the immediate opcodes if possible */
10299                         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)) {
10300                                 int imm_opcode;
10301
10302                                 imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10303 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
10304                                 /* Keep emulated opcodes which are optimized away later */
10305                                 if ((ins->opcode == OP_IREM_UN || ins->opcode == OP_IDIV_UN_IMM) && (cfg->opt & (MONO_OPT_CONSPROP | MONO_OPT_COPYPROP)) && sp [1]->opcode == OP_ICONST && mono_is_power_of_two (sp [1]->inst_c0) >= 0) {
10306                                         imm_opcode = mono_op_to_op_imm (ins->opcode);
10307                                 }
10308 #endif
10309                                 if (imm_opcode != -1) {
10310                                         ins->opcode = imm_opcode;
10311                                         if (sp [1]->opcode == OP_I8CONST) {
10312 #if SIZEOF_REGISTER == 8
10313                                                 ins->inst_imm = sp [1]->inst_l;
10314 #else
10315                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10316                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10317 #endif
10318                                         }
10319                                         else
10320                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10321                                         ins->sreg2 = -1;
10322
10323                                         /* Might be followed by an instruction added by add_widen_op */
10324                                         if (sp [1]->next == NULL)
10325                                                 NULLIFY_INS (sp [1]);
10326                                 }
10327                         }
10328                         MONO_ADD_INS ((cfg)->cbb, (ins));
10329
10330                         *sp++ = mono_decompose_opcode (cfg, ins);
10331                         ip++;
10332                         break;
10333                 case CEE_NEG:
10334                 case CEE_NOT:
10335                 case CEE_CONV_I1:
10336                 case CEE_CONV_I2:
10337                 case CEE_CONV_I4:
10338                 case CEE_CONV_R4:
10339                 case CEE_CONV_R8:
10340                 case CEE_CONV_U4:
10341                 case CEE_CONV_I8:
10342                 case CEE_CONV_U8:
10343                 case CEE_CONV_OVF_I8:
10344                 case CEE_CONV_OVF_U8:
10345                 case CEE_CONV_R_UN:
10346                         CHECK_STACK (1);
10347
10348                         /* Special case this earlier so we have long constants in the IR */
10349                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10350                                 int data = sp [-1]->inst_c0;
10351                                 sp [-1]->opcode = OP_I8CONST;
10352                                 sp [-1]->type = STACK_I8;
10353 #if SIZEOF_REGISTER == 8
10354                                 if ((*ip) == CEE_CONV_U8)
10355                                         sp [-1]->inst_c0 = (guint32)data;
10356                                 else
10357                                         sp [-1]->inst_c0 = data;
10358 #else
10359                                 sp [-1]->inst_ls_word = data;
10360                                 if ((*ip) == CEE_CONV_U8)
10361                                         sp [-1]->inst_ms_word = 0;
10362                                 else
10363                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10364 #endif
10365                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10366                         }
10367                         else {
10368                                 ADD_UNOP (*ip);
10369                         }
10370                         ip++;
10371                         break;
10372                 case CEE_CONV_OVF_I4:
10373                 case CEE_CONV_OVF_I1:
10374                 case CEE_CONV_OVF_I2:
10375                 case CEE_CONV_OVF_I:
10376                 case CEE_CONV_OVF_U:
10377                         CHECK_STACK (1);
10378
10379                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10380                                 ADD_UNOP (CEE_CONV_OVF_I8);
10381                                 ADD_UNOP (*ip);
10382                         } else {
10383                                 ADD_UNOP (*ip);
10384                         }
10385                         ip++;
10386                         break;
10387                 case CEE_CONV_OVF_U1:
10388                 case CEE_CONV_OVF_U2:
10389                 case CEE_CONV_OVF_U4:
10390                         CHECK_STACK (1);
10391
10392                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10393                                 ADD_UNOP (CEE_CONV_OVF_U8);
10394                                 ADD_UNOP (*ip);
10395                         } else {
10396                                 ADD_UNOP (*ip);
10397                         }
10398                         ip++;
10399                         break;
10400                 case CEE_CONV_OVF_I1_UN:
10401                 case CEE_CONV_OVF_I2_UN:
10402                 case CEE_CONV_OVF_I4_UN:
10403                 case CEE_CONV_OVF_I8_UN:
10404                 case CEE_CONV_OVF_U1_UN:
10405                 case CEE_CONV_OVF_U2_UN:
10406                 case CEE_CONV_OVF_U4_UN:
10407                 case CEE_CONV_OVF_U8_UN:
10408                 case CEE_CONV_OVF_I_UN:
10409                 case CEE_CONV_OVF_U_UN:
10410                 case CEE_CONV_U2:
10411                 case CEE_CONV_U1:
10412                 case CEE_CONV_I:
10413                 case CEE_CONV_U:
10414                         CHECK_STACK (1);
10415                         ADD_UNOP (*ip);
10416                         CHECK_CFG_EXCEPTION;
10417                         ip++;
10418                         break;
10419                 case CEE_ADD_OVF:
10420                 case CEE_ADD_OVF_UN:
10421                 case CEE_MUL_OVF:
10422                 case CEE_MUL_OVF_UN:
10423                 case CEE_SUB_OVF:
10424                 case CEE_SUB_OVF_UN:
10425                         CHECK_STACK (2);
10426                         ADD_BINOP (*ip);
10427                         ip++;
10428                         break;
10429                 case CEE_CPOBJ:
10430                         GSHAREDVT_FAILURE (*ip);
10431                         CHECK_OPSIZE (5);
10432                         CHECK_STACK (2);
10433                         token = read32 (ip + 1);
10434                         klass = mini_get_class (method, token, generic_context);
10435                         CHECK_TYPELOAD (klass);
10436                         sp -= 2;
10437                         if (generic_class_is_reference_type (cfg, klass)) {
10438                                 MonoInst *store, *load;
10439                                 int dreg = alloc_ireg_ref (cfg);
10440
10441                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10442                                 load->flags |= ins_flag;
10443                                 MONO_ADD_INS (cfg->cbb, load);
10444
10445                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10446                                 store->flags |= ins_flag;
10447                                 MONO_ADD_INS (cfg->cbb, store);
10448
10449                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10450                                         emit_write_barrier (cfg, sp [0], sp [1]);
10451                         } else {
10452                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10453                         }
10454                         ins_flag = 0;
10455                         ip += 5;
10456                         break;
10457                 case CEE_LDOBJ: {
10458                         int loc_index = -1;
10459                         int stloc_len = 0;
10460
10461                         CHECK_OPSIZE (5);
10462                         CHECK_STACK (1);
10463                         --sp;
10464                         token = read32 (ip + 1);
10465                         klass = mini_get_class (method, token, generic_context);
10466                         CHECK_TYPELOAD (klass);
10467
10468                         /* Optimize the common ldobj+stloc combination */
10469                         switch (ip [5]) {
10470                         case CEE_STLOC_S:
10471                                 loc_index = ip [6];
10472                                 stloc_len = 2;
10473                                 break;
10474                         case CEE_STLOC_0:
10475                         case CEE_STLOC_1:
10476                         case CEE_STLOC_2:
10477                         case CEE_STLOC_3:
10478                                 loc_index = ip [5] - CEE_STLOC_0;
10479                                 stloc_len = 1;
10480                                 break;
10481                         default:
10482                                 break;
10483                         }
10484
10485                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10486                                 CHECK_LOCAL (loc_index);
10487
10488                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10489                                 ins->dreg = cfg->locals [loc_index]->dreg;
10490                                 ins->flags |= ins_flag;
10491                                 ip += 5;
10492                                 ip += stloc_len;
10493                                 if (ins_flag & MONO_INST_VOLATILE) {
10494                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10495                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10496                                 }
10497                                 ins_flag = 0;
10498                                 break;
10499                         }
10500
10501                         /* Optimize the ldobj+stobj combination */
10502                         /* The reference case ends up being a load+store anyway */
10503                         /* Skip this if the operation is volatile. */
10504                         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)) {
10505                                 CHECK_STACK (1);
10506
10507                                 sp --;
10508
10509                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10510
10511                                 ip += 5 + 5;
10512                                 ins_flag = 0;
10513                                 break;
10514                         }
10515
10516                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10517                         ins->flags |= ins_flag;
10518                         *sp++ = ins;
10519
10520                         if (ins_flag & MONO_INST_VOLATILE) {
10521                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10522                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10523                         }
10524
10525                         ip += 5;
10526                         ins_flag = 0;
10527                         inline_costs += 1;
10528                         break;
10529                 }
10530                 case CEE_LDSTR:
10531                         CHECK_STACK_OVF (1);
10532                         CHECK_OPSIZE (5);
10533                         n = read32 (ip + 1);
10534
10535                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10536                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10537                                 ins->type = STACK_OBJ;
10538                                 *sp = ins;
10539                         }
10540                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10541                                 MonoInst *iargs [1];
10542                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10543
10544                                 if (cfg->compile_aot)
10545                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10546                                 else
10547                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10548                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10549                         } else {
10550                                 if (cfg->opt & MONO_OPT_SHARED) {
10551                                         MonoInst *iargs [3];
10552
10553                                         if (cfg->compile_aot) {
10554                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10555                                         }
10556                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10557                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10558                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10559                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10560                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10561                                 } else {
10562                                         if (cfg->cbb->out_of_line) {
10563                                                 MonoInst *iargs [2];
10564
10565                                                 if (image == mono_defaults.corlib) {
10566                                                         /*
10567                                                          * Avoid relocations in AOT and save some space by using a
10568                                                          * version of helper_ldstr specialized to mscorlib.
10569                                                          */
10570                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10571                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10572                                                 } else {
10573                                                         /* Avoid creating the string object */
10574                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10575                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10576                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10577                                                 }
10578                                         }
10579                                         else
10580                                         if (cfg->compile_aot) {
10581                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10582                                                 *sp = ins;
10583                                                 MONO_ADD_INS (cfg->cbb, ins);
10584                                         }
10585                                         else {
10586                                                 NEW_PCONST (cfg, ins, NULL);
10587                                                 ins->type = STACK_OBJ;
10588                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10589                                                 if (!ins->inst_p0)
10590                                                         OUT_OF_MEMORY_FAILURE;
10591
10592                                                 *sp = ins;
10593                                                 MONO_ADD_INS (cfg->cbb, ins);
10594                                         }
10595                                 }
10596                         }
10597
10598                         sp++;
10599                         ip += 5;
10600                         break;
10601                 case CEE_NEWOBJ: {
10602                         MonoInst *iargs [2];
10603                         MonoMethodSignature *fsig;
10604                         MonoInst this_ins;
10605                         MonoInst *alloc;
10606                         MonoInst *vtable_arg = NULL;
10607
10608                         CHECK_OPSIZE (5);
10609                         token = read32 (ip + 1);
10610                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10611                         if (!cmethod || mono_loader_get_last_error ())
10612                                 LOAD_ERROR;
10613                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10614                         CHECK_CFG_ERROR;
10615
10616                         mono_save_token_info (cfg, image, token, cmethod);
10617
10618                         if (!mono_class_init (cmethod->klass))
10619                                 TYPE_LOAD_ERROR (cmethod->klass);
10620
10621                         context_used = mini_method_check_context_used (cfg, cmethod);
10622
10623                         if (mono_security_core_clr_enabled ())
10624                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10625
10626                         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)) {
10627                                 emit_class_init (cfg, cmethod->klass);
10628                                 CHECK_TYPELOAD (cmethod->klass);
10629                         }
10630
10631                         /*
10632                         if (cfg->gsharedvt) {
10633                                 if (mini_is_gsharedvt_variable_signature (sig))
10634                                         GSHAREDVT_FAILURE (*ip);
10635                         }
10636                         */
10637
10638                         n = fsig->param_count;
10639                         CHECK_STACK (n);
10640
10641                         /*
10642                          * Generate smaller code for the common newobj <exception> instruction in
10643                          * argument checking code.
10644                          */
10645                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10646                                 is_exception_class (cmethod->klass) && n <= 2 &&
10647                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10648                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10649                                 MonoInst *iargs [3];
10650
10651                                 sp -= n;
10652
10653                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10654                                 switch (n) {
10655                                 case 0:
10656                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10657                                         break;
10658                                 case 1:
10659                                         iargs [1] = sp [0];
10660                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10661                                         break;
10662                                 case 2:
10663                                         iargs [1] = sp [0];
10664                                         iargs [2] = sp [1];
10665                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10666                                         break;
10667                                 default:
10668                                         g_assert_not_reached ();
10669                                 }
10670
10671                                 ip += 5;
10672                                 inline_costs += 5;
10673                                 break;
10674                         }
10675
10676                         /* move the args to allow room for 'this' in the first position */
10677                         while (n--) {
10678                                 --sp;
10679                                 sp [1] = sp [0];
10680                         }
10681
10682                         /* check_call_signature () requires sp[0] to be set */
10683                         this_ins.type = STACK_OBJ;
10684                         sp [0] = &this_ins;
10685                         if (check_call_signature (cfg, fsig, sp))
10686                                 UNVERIFIED;
10687
10688                         iargs [0] = NULL;
10689
10690                         if (mini_class_is_system_array (cmethod->klass)) {
10691                                 *sp = emit_get_rgctx_method (cfg, context_used,
10692                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10693
10694                                 /* Avoid varargs in the common case */
10695                                 if (fsig->param_count == 1)
10696                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10697                                 else if (fsig->param_count == 2)
10698                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10699                                 else if (fsig->param_count == 3)
10700                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10701                                 else if (fsig->param_count == 4)
10702                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10703                                 else
10704                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10705                         } else if (cmethod->string_ctor) {
10706                                 g_assert (!context_used);
10707                                 g_assert (!vtable_arg);
10708                                 /* we simply pass a null pointer */
10709                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10710                                 /* now call the string ctor */
10711                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10712                         } else {
10713                                 if (cmethod->klass->valuetype) {
10714                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10715                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10716                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10717
10718                                         alloc = NULL;
10719
10720                                         /*
10721                                          * The code generated by mini_emit_virtual_call () expects
10722                                          * iargs [0] to be a boxed instance, but luckily the vcall
10723                                          * will be transformed into a normal call there.
10724                                          */
10725                                 } else if (context_used) {
10726                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10727                                         *sp = alloc;
10728                                 } else {
10729                                         MonoVTable *vtable = NULL;
10730
10731                                         if (!cfg->compile_aot)
10732                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10733                                         CHECK_TYPELOAD (cmethod->klass);
10734
10735                                         /*
10736                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10737                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10738                                          * As a workaround, we call class cctors before allocating objects.
10739                                          */
10740                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10741                                                 emit_class_init (cfg, cmethod->klass);
10742                                                 if (cfg->verbose_level > 2)
10743                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10744                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10745                                         }
10746
10747                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10748                                         *sp = alloc;
10749                                 }
10750                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10751
10752                                 if (alloc)
10753                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10754
10755                                 /* Now call the actual ctor */
10756                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10757                                 CHECK_CFG_EXCEPTION;
10758                         }
10759
10760                         if (alloc == NULL) {
10761                                 /* Valuetype */
10762                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10763                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10764                                 *sp++= ins;
10765                         } else {
10766                                 *sp++ = alloc;
10767                         }
10768
10769                         ip += 5;
10770                         inline_costs += 5;
10771                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10772                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10773                         break;
10774                 }
10775                 case CEE_CASTCLASS:
10776                         CHECK_STACK (1);
10777                         --sp;
10778                         CHECK_OPSIZE (5);
10779                         token = read32 (ip + 1);
10780                         klass = mini_get_class (method, token, generic_context);
10781                         CHECK_TYPELOAD (klass);
10782                         if (sp [0]->type != STACK_OBJ)
10783                                 UNVERIFIED;
10784
10785                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10786                         CHECK_CFG_EXCEPTION;
10787
10788                         *sp ++ = ins;
10789                         ip += 5;
10790                         break;
10791                 case CEE_ISINST: {
10792                         CHECK_STACK (1);
10793                         --sp;
10794                         CHECK_OPSIZE (5);
10795                         token = read32 (ip + 1);
10796                         klass = mini_get_class (method, token, generic_context);
10797                         CHECK_TYPELOAD (klass);
10798                         if (sp [0]->type != STACK_OBJ)
10799                                 UNVERIFIED;
10800
10801                         context_used = mini_class_check_context_used (cfg, klass);
10802
10803                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10804                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10805                                 MonoInst *args [3];
10806                                 int idx;
10807
10808                                 /* obj */
10809                                 args [0] = *sp;
10810
10811                                 /* klass */
10812                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10813
10814                                 /* inline cache*/
10815                                 idx = get_castclass_cache_idx (cfg);
10816                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
10817
10818                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
10819                                 ip += 5;
10820                                 inline_costs += 2;
10821                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
10822                                 MonoMethod *mono_isinst;
10823                                 MonoInst *iargs [1];
10824                                 int costs;
10825
10826                                 mono_isinst = mono_marshal_get_isinst (klass);
10827                                 iargs [0] = sp [0];
10828
10829                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
10830                                                                            iargs, ip, cfg->real_offset, TRUE);
10831                                 CHECK_CFG_EXCEPTION;
10832                                 g_assert (costs > 0);
10833
10834                                 ip += 5;
10835                                 cfg->real_offset += 5;
10836
10837                                 *sp++= iargs [0];
10838
10839                                 inline_costs += costs;
10840                         }
10841                         else {
10842                                 ins = handle_isinst (cfg, klass, *sp, context_used);
10843                                 CHECK_CFG_EXCEPTION;
10844                                 *sp ++ = ins;
10845                                 ip += 5;
10846                         }
10847                         break;
10848                 }
10849                 case CEE_UNBOX_ANY: {
10850                         MonoInst *res, *addr;
10851
10852                         CHECK_STACK (1);
10853                         --sp;
10854                         CHECK_OPSIZE (5);
10855                         token = read32 (ip + 1);
10856                         klass = mini_get_class (method, token, generic_context);
10857                         CHECK_TYPELOAD (klass);
10858
10859                         mono_save_token_info (cfg, image, token, klass);
10860
10861                         context_used = mini_class_check_context_used (cfg, klass);
10862
10863                         if (mini_is_gsharedvt_klass (klass)) {
10864                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10865                                 inline_costs += 2;
10866                         } else if (generic_class_is_reference_type (cfg, klass)) {
10867                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10868                                 CHECK_CFG_EXCEPTION;
10869                         } else if (mono_class_is_nullable (klass)) {
10870                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10871                         } else {
10872                                 addr = handle_unbox (cfg, klass, sp, context_used);
10873                                 /* LDOBJ */
10874                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10875                                 res = ins;
10876                                 inline_costs += 2;
10877                         }
10878
10879                         *sp ++ = res;
10880                         ip += 5;
10881                         break;
10882                 }
10883                 case CEE_BOX: {
10884                         MonoInst *val;
10885                         MonoClass *enum_class;
10886                         MonoMethod *has_flag;
10887
10888                         CHECK_STACK (1);
10889                         --sp;
10890                         val = *sp;
10891                         CHECK_OPSIZE (5);
10892                         token = read32 (ip + 1);
10893                         klass = mini_get_class (method, token, generic_context);
10894                         CHECK_TYPELOAD (klass);
10895
10896                         mono_save_token_info (cfg, image, token, klass);
10897
10898                         context_used = mini_class_check_context_used (cfg, klass);
10899
10900                         if (generic_class_is_reference_type (cfg, klass)) {
10901                                 *sp++ = val;
10902                                 ip += 5;
10903                                 break;
10904                         }
10905
10906                         if (klass == mono_defaults.void_class)
10907                                 UNVERIFIED;
10908                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10909                                 UNVERIFIED;
10910                         /* frequent check in generic code: box (struct), brtrue */
10911
10912                         /*
10913                          * Look for:
10914                          *
10915                          *   <push int/long ptr>
10916                          *   <push int/long>
10917                          *   box MyFlags
10918                          *   constrained. MyFlags
10919                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10920                          *
10921                          * If we find this sequence and the operand types on box and constrained
10922                          * are equal, we can emit a specialized instruction sequence instead of
10923                          * the very slow HasFlag () call.
10924                          */
10925                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10926                             /* Cheap checks first. */
10927                             ip + 5 + 6 + 5 < end &&
10928                             ip [5] == CEE_PREFIX1 &&
10929                             ip [6] == CEE_CONSTRAINED_ &&
10930                             ip [11] == CEE_CALLVIRT &&
10931                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10932                             mono_class_is_enum (klass) &&
10933                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10934                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10935                             has_flag->klass == mono_defaults.enum_class &&
10936                             !strcmp (has_flag->name, "HasFlag") &&
10937                             has_flag->signature->hasthis &&
10938                             has_flag->signature->param_count == 1) {
10939                                 CHECK_TYPELOAD (enum_class);
10940
10941                                 if (enum_class == klass) {
10942                                         MonoInst *enum_this, *enum_flag;
10943
10944                                         ip += 5 + 6 + 5;
10945                                         --sp;
10946
10947                                         enum_this = sp [0];
10948                                         enum_flag = sp [1];
10949
10950                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10951                                         break;
10952                                 }
10953                         }
10954
10955                         // FIXME: LLVM can't handle the inconsistent bb linking
10956                         if (!mono_class_is_nullable (klass) &&
10957                                 !mini_is_gsharedvt_klass (klass) &&
10958                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10959                                 (ip [5] == CEE_BRTRUE ||
10960                                  ip [5] == CEE_BRTRUE_S ||
10961                                  ip [5] == CEE_BRFALSE ||
10962                                  ip [5] == CEE_BRFALSE_S)) {
10963                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10964                                 int dreg;
10965                                 MonoBasicBlock *true_bb, *false_bb;
10966
10967                                 ip += 5;
10968
10969                                 if (cfg->verbose_level > 3) {
10970                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10971                                         printf ("<box+brtrue opt>\n");
10972                                 }
10973
10974                                 switch (*ip) {
10975                                 case CEE_BRTRUE_S:
10976                                 case CEE_BRFALSE_S:
10977                                         CHECK_OPSIZE (2);
10978                                         ip++;
10979                                         target = ip + 1 + (signed char)(*ip);
10980                                         ip++;
10981                                         break;
10982                                 case CEE_BRTRUE:
10983                                 case CEE_BRFALSE:
10984                                         CHECK_OPSIZE (5);
10985                                         ip++;
10986                                         target = ip + 4 + (gint)(read32 (ip));
10987                                         ip += 4;
10988                                         break;
10989                                 default:
10990                                         g_assert_not_reached ();
10991                                 }
10992
10993                                 /*
10994                                  * We need to link both bblocks, since it is needed for handling stack
10995                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10996                                  * Branching to only one of them would lead to inconsistencies, so
10997                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10998                                  */
10999                                 GET_BBLOCK (cfg, true_bb, target);
11000                                 GET_BBLOCK (cfg, false_bb, ip);
11001
11002                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11003                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11004
11005                                 if (sp != stack_start) {
11006                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11007                                         sp = stack_start;
11008                                         CHECK_UNVERIFIABLE (cfg);
11009                                 }
11010
11011                                 if (COMPILE_LLVM (cfg)) {
11012                                         dreg = alloc_ireg (cfg);
11013                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11014                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11015
11016                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11017                                 } else {
11018                                         /* The JIT can't eliminate the iconst+compare */
11019                                         MONO_INST_NEW (cfg, ins, OP_BR);
11020                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11021                                         MONO_ADD_INS (cfg->cbb, ins);
11022                                 }
11023
11024                                 start_new_bblock = 1;
11025                                 break;
11026                         }
11027
11028                         *sp++ = handle_box (cfg, val, klass, context_used);
11029
11030                         CHECK_CFG_EXCEPTION;
11031                         ip += 5;
11032                         inline_costs += 1;
11033                         break;
11034                 }
11035                 case CEE_UNBOX: {
11036                         CHECK_STACK (1);
11037                         --sp;
11038                         CHECK_OPSIZE (5);
11039                         token = read32 (ip + 1);
11040                         klass = mini_get_class (method, token, generic_context);
11041                         CHECK_TYPELOAD (klass);
11042
11043                         mono_save_token_info (cfg, image, token, klass);
11044
11045                         context_used = mini_class_check_context_used (cfg, klass);
11046
11047                         if (mono_class_is_nullable (klass)) {
11048                                 MonoInst *val;
11049
11050                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11051                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11052
11053                                 *sp++= ins;
11054                         } else {
11055                                 ins = handle_unbox (cfg, klass, sp, context_used);
11056                                 *sp++ = ins;
11057                         }
11058                         ip += 5;
11059                         inline_costs += 2;
11060                         break;
11061                 }
11062                 case CEE_LDFLD:
11063                 case CEE_LDFLDA:
11064                 case CEE_STFLD:
11065                 case CEE_LDSFLD:
11066                 case CEE_LDSFLDA:
11067                 case CEE_STSFLD: {
11068                         MonoClassField *field;
11069 #ifndef DISABLE_REMOTING
11070                         int costs;
11071 #endif
11072                         guint foffset;
11073                         gboolean is_instance;
11074                         int op;
11075                         gpointer addr = NULL;
11076                         gboolean is_special_static;
11077                         MonoType *ftype;
11078                         MonoInst *store_val = NULL;
11079                         MonoInst *thread_ins;
11080
11081                         op = *ip;
11082                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11083                         if (is_instance) {
11084                                 if (op == CEE_STFLD) {
11085                                         CHECK_STACK (2);
11086                                         sp -= 2;
11087                                         store_val = sp [1];
11088                                 } else {
11089                                         CHECK_STACK (1);
11090                                         --sp;
11091                                 }
11092                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11093                                         UNVERIFIED;
11094                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11095                                         UNVERIFIED;
11096                         } else {
11097                                 if (op == CEE_STSFLD) {
11098                                         CHECK_STACK (1);
11099                                         sp--;
11100                                         store_val = sp [0];
11101                                 }
11102                         }
11103
11104                         CHECK_OPSIZE (5);
11105                         token = read32 (ip + 1);
11106                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11107                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11108                                 klass = field->parent;
11109                         }
11110                         else {
11111                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11112                                 CHECK_CFG_ERROR;
11113                         }
11114                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11115                                 FIELD_ACCESS_FAILURE (method, field);
11116                         mono_class_init (klass);
11117
11118                         /* if the class is Critical then transparent code cannot access it's fields */
11119                         if (!is_instance && mono_security_core_clr_enabled ())
11120                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11121
11122                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11123                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11124                         if (mono_security_core_clr_enabled ())
11125                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11126                         */
11127
11128                         ftype = mono_field_get_type (field);
11129
11130                         /*
11131                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11132                          * the static case.
11133                          */
11134                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11135                                 switch (op) {
11136                                 case CEE_LDFLD:
11137                                         op = CEE_LDSFLD;
11138                                         break;
11139                                 case CEE_STFLD:
11140                                         op = CEE_STSFLD;
11141                                         break;
11142                                 case CEE_LDFLDA:
11143                                         op = CEE_LDSFLDA;
11144                                         break;
11145                                 default:
11146                                         g_assert_not_reached ();
11147                                 }
11148                                 is_instance = FALSE;
11149                         }
11150
11151                         context_used = mini_class_check_context_used (cfg, klass);
11152
11153                         /* INSTANCE CASE */
11154
11155                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11156                         if (op == CEE_STFLD) {
11157                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11158                                         UNVERIFIED;
11159 #ifndef DISABLE_REMOTING
11160                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11161                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11162                                         MonoInst *iargs [5];
11163
11164                                         GSHAREDVT_FAILURE (op);
11165
11166                                         iargs [0] = sp [0];
11167                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11168                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11169                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11170                                                     field->offset);
11171                                         iargs [4] = sp [1];
11172
11173                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11174                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11175                                                                                            iargs, ip, cfg->real_offset, TRUE);
11176                                                 CHECK_CFG_EXCEPTION;
11177                                                 g_assert (costs > 0);
11178
11179                                                 cfg->real_offset += 5;
11180
11181                                                 inline_costs += costs;
11182                                         } else {
11183                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11184                                         }
11185                                 } else
11186 #endif
11187                                 {
11188                                         MonoInst *store;
11189
11190                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11191
11192                                         if (mini_is_gsharedvt_klass (klass)) {
11193                                                 MonoInst *offset_ins;
11194
11195                                                 context_used = mini_class_check_context_used (cfg, klass);
11196
11197                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11198                                                 /* The value is offset by 1 */
11199                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11200                                                 dreg = alloc_ireg_mp (cfg);
11201                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11202                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11203                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11204                                         } else {
11205                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11206                                         }
11207                                         if (sp [0]->opcode != OP_LDADDR)
11208                                                 store->flags |= MONO_INST_FAULT;
11209
11210                                 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)) {
11211                                         /* insert call to write barrier */
11212                                         MonoInst *ptr;
11213                                         int dreg;
11214
11215                                         dreg = alloc_ireg_mp (cfg);
11216                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11217                                         emit_write_barrier (cfg, ptr, sp [1]);
11218                                 }
11219
11220                                         store->flags |= ins_flag;
11221                                 }
11222                                 ins_flag = 0;
11223                                 ip += 5;
11224                                 break;
11225                         }
11226
11227 #ifndef DISABLE_REMOTING
11228                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11229                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11230                                 MonoInst *iargs [4];
11231
11232                                 GSHAREDVT_FAILURE (op);
11233
11234                                 iargs [0] = sp [0];
11235                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11236                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11237                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11238                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11239                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11240                                                                                    iargs, ip, cfg->real_offset, TRUE);
11241                                         CHECK_CFG_EXCEPTION;
11242                                         g_assert (costs > 0);
11243
11244                                         cfg->real_offset += 5;
11245
11246                                         *sp++ = iargs [0];
11247
11248                                         inline_costs += costs;
11249                                 } else {
11250                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11251                                         *sp++ = ins;
11252                                 }
11253                         } else
11254 #endif
11255                         if (is_instance) {
11256                                 if (sp [0]->type == STACK_VTYPE) {
11257                                         MonoInst *var;
11258
11259                                         /* Have to compute the address of the variable */
11260
11261                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11262                                         if (!var)
11263                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11264                                         else
11265                                                 g_assert (var->klass == klass);
11266
11267                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11268                                         sp [0] = ins;
11269                                 }
11270
11271                                 if (op == CEE_LDFLDA) {
11272                                         if (sp [0]->type == STACK_OBJ) {
11273                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11274                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11275                                         }
11276
11277                                         dreg = alloc_ireg_mp (cfg);
11278
11279                                         if (mini_is_gsharedvt_klass (klass)) {
11280                                                 MonoInst *offset_ins;
11281
11282                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11283                                                 /* The value is offset by 1 */
11284                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11285                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11286                                         } else {
11287                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11288                                         }
11289                                         ins->klass = mono_class_from_mono_type (field->type);
11290                                         ins->type = STACK_MP;
11291                                         *sp++ = ins;
11292                                 } else {
11293                                         MonoInst *load;
11294
11295                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11296
11297                                         if (mini_is_gsharedvt_klass (klass)) {
11298                                                 MonoInst *offset_ins;
11299
11300                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11301                                                 /* The value is offset by 1 */
11302                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11303                                                 dreg = alloc_ireg_mp (cfg);
11304                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11305                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11306                                         } else {
11307                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11308                                         }
11309                                         load->flags |= ins_flag;
11310                                         if (sp [0]->opcode != OP_LDADDR)
11311                                                 load->flags |= MONO_INST_FAULT;
11312                                         *sp++ = load;
11313                                 }
11314                         }
11315
11316                         if (is_instance) {
11317                                 ins_flag = 0;
11318                                 ip += 5;
11319                                 break;
11320                         }
11321
11322                         /* STATIC CASE */
11323                         context_used = mini_class_check_context_used (cfg, klass);
11324
11325                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL)
11326                                 UNVERIFIED;
11327
11328                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11329                          * to be called here.
11330                          */
11331                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11332                                 mono_class_vtable (cfg->domain, klass);
11333                                 CHECK_TYPELOAD (klass);
11334                         }
11335                         mono_domain_lock (cfg->domain);
11336                         if (cfg->domain->special_static_fields)
11337                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11338                         mono_domain_unlock (cfg->domain);
11339
11340                         is_special_static = mono_class_field_is_special_static (field);
11341
11342                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11343                                 thread_ins = mono_get_thread_intrinsic (cfg);
11344                         else
11345                                 thread_ins = NULL;
11346
11347                         /* Generate IR to compute the field address */
11348                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11349                                 /*
11350                                  * Fast access to TLS data
11351                                  * Inline version of get_thread_static_data () in
11352                                  * threads.c.
11353                                  */
11354                                 guint32 offset;
11355                                 int idx, static_data_reg, array_reg, dreg;
11356
11357                                 GSHAREDVT_FAILURE (op);
11358
11359                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11360                                 static_data_reg = alloc_ireg (cfg);
11361                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11362
11363                                 if (cfg->compile_aot) {
11364                                         int offset_reg, offset2_reg, idx_reg;
11365
11366                                         /* For TLS variables, this will return the TLS offset */
11367                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11368                                         offset_reg = ins->dreg;
11369                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11370                                         idx_reg = alloc_ireg (cfg);
11371                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11372                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11373                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11374                                         array_reg = alloc_ireg (cfg);
11375                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11376                                         offset2_reg = alloc_ireg (cfg);
11377                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11378                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11379                                         dreg = alloc_ireg (cfg);
11380                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11381                                 } else {
11382                                         offset = (gsize)addr & 0x7fffffff;
11383                                         idx = offset & 0x3f;
11384
11385                                         array_reg = alloc_ireg (cfg);
11386                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11387                                         dreg = alloc_ireg (cfg);
11388                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11389                                 }
11390                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11391                                         (cfg->compile_aot && is_special_static) ||
11392                                         (context_used && is_special_static)) {
11393                                 MonoInst *iargs [2];
11394
11395                                 g_assert (field->parent);
11396                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11397                                 if (context_used) {
11398                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11399                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11400                                 } else {
11401                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11402                                 }
11403                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11404                         } else if (context_used) {
11405                                 MonoInst *static_data;
11406
11407                                 /*
11408                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11409                                         method->klass->name_space, method->klass->name, method->name,
11410                                         depth, field->offset);
11411                                 */
11412
11413                                 if (mono_class_needs_cctor_run (klass, method))
11414                                         emit_class_init (cfg, klass);
11415
11416                                 /*
11417                                  * The pointer we're computing here is
11418                                  *
11419                                  *   super_info.static_data + field->offset
11420                                  */
11421                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11422                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11423
11424                                 if (mini_is_gsharedvt_klass (klass)) {
11425                                         MonoInst *offset_ins;
11426
11427                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11428                                         /* The value is offset by 1 */
11429                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11430                                         dreg = alloc_ireg_mp (cfg);
11431                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11432                                 } else if (field->offset == 0) {
11433                                         ins = static_data;
11434                                 } else {
11435                                         int addr_reg = mono_alloc_preg (cfg);
11436                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11437                                 }
11438                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11439                                 MonoInst *iargs [2];
11440
11441                                 g_assert (field->parent);
11442                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11443                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11444                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11445                         } else {
11446                                 MonoVTable *vtable = NULL;
11447
11448                                 if (!cfg->compile_aot)
11449                                         vtable = mono_class_vtable (cfg->domain, klass);
11450                                 CHECK_TYPELOAD (klass);
11451
11452                                 if (!addr) {
11453                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11454                                                 if (!(g_slist_find (class_inits, klass))) {
11455                                                         emit_class_init (cfg, klass);
11456                                                         if (cfg->verbose_level > 2)
11457                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11458                                                         class_inits = g_slist_prepend (class_inits, klass);
11459                                                 }
11460                                         } else {
11461                                                 if (cfg->run_cctors) {
11462                                                         MonoException *ex;
11463                                                         /* This makes so that inline cannot trigger */
11464                                                         /* .cctors: too many apps depend on them */
11465                                                         /* running with a specific order... */
11466                                                         g_assert (vtable);
11467                                                         if (! vtable->initialized)
11468                                                                 INLINE_FAILURE ("class init");
11469                                                         ex = mono_runtime_class_init_full (vtable, FALSE);
11470                                                         if (ex) {
11471                                                                 set_exception_object (cfg, ex);
11472                                                                 goto exception_exit;
11473                                                         }
11474                                                 }
11475                                         }
11476                                         if (cfg->compile_aot)
11477                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11478                                         else {
11479                                                 g_assert (vtable);
11480                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11481                                                 g_assert (addr);
11482                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11483                                         }
11484                                 } else {
11485                                         MonoInst *iargs [1];
11486                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11487                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11488                                 }
11489                         }
11490
11491                         /* Generate IR to do the actual load/store operation */
11492
11493                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11494                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11495                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11496                         }
11497
11498                         if (op == CEE_LDSFLDA) {
11499                                 ins->klass = mono_class_from_mono_type (ftype);
11500                                 ins->type = STACK_PTR;
11501                                 *sp++ = ins;
11502                         } else if (op == CEE_STSFLD) {
11503                                 MonoInst *store;
11504
11505                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11506                                 store->flags |= ins_flag;
11507                         } else {
11508                                 gboolean is_const = FALSE;
11509                                 MonoVTable *vtable = NULL;
11510                                 gpointer addr = NULL;
11511
11512                                 if (!context_used) {
11513                                         vtable = mono_class_vtable (cfg->domain, klass);
11514                                         CHECK_TYPELOAD (klass);
11515                                 }
11516                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11517                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11518                                         int ro_type = ftype->type;
11519                                         if (!addr)
11520                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11521                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11522                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11523                                         }
11524
11525                                         GSHAREDVT_FAILURE (op);
11526
11527                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11528                                         is_const = TRUE;
11529                                         switch (ro_type) {
11530                                         case MONO_TYPE_BOOLEAN:
11531                                         case MONO_TYPE_U1:
11532                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11533                                                 sp++;
11534                                                 break;
11535                                         case MONO_TYPE_I1:
11536                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11537                                                 sp++;
11538                                                 break;
11539                                         case MONO_TYPE_CHAR:
11540                                         case MONO_TYPE_U2:
11541                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11542                                                 sp++;
11543                                                 break;
11544                                         case MONO_TYPE_I2:
11545                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11546                                                 sp++;
11547                                                 break;
11548                                                 break;
11549                                         case MONO_TYPE_I4:
11550                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11551                                                 sp++;
11552                                                 break;
11553                                         case MONO_TYPE_U4:
11554                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11555                                                 sp++;
11556                                                 break;
11557                                         case MONO_TYPE_I:
11558                                         case MONO_TYPE_U:
11559                                         case MONO_TYPE_PTR:
11560                                         case MONO_TYPE_FNPTR:
11561                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11562                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11563                                                 sp++;
11564                                                 break;
11565                                         case MONO_TYPE_STRING:
11566                                         case MONO_TYPE_OBJECT:
11567                                         case MONO_TYPE_CLASS:
11568                                         case MONO_TYPE_SZARRAY:
11569                                         case MONO_TYPE_ARRAY:
11570                                                 if (!mono_gc_is_moving ()) {
11571                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11572                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11573                                                         sp++;
11574                                                 } else {
11575                                                         is_const = FALSE;
11576                                                 }
11577                                                 break;
11578                                         case MONO_TYPE_I8:
11579                                         case MONO_TYPE_U8:
11580                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11581                                                 sp++;
11582                                                 break;
11583                                         case MONO_TYPE_R4:
11584                                         case MONO_TYPE_R8:
11585                                         case MONO_TYPE_VALUETYPE:
11586                                         default:
11587                                                 is_const = FALSE;
11588                                                 break;
11589                                         }
11590                                 }
11591
11592                                 if (!is_const) {
11593                                         MonoInst *load;
11594
11595                                         CHECK_STACK_OVF (1);
11596
11597                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11598                                         load->flags |= ins_flag;
11599                                         ins_flag = 0;
11600                                         *sp++ = load;
11601                                 }
11602                         }
11603
11604                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11605                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11606                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11607                         }
11608
11609                         ins_flag = 0;
11610                         ip += 5;
11611                         break;
11612                 }
11613                 case CEE_STOBJ:
11614                         CHECK_STACK (2);
11615                         sp -= 2;
11616                         CHECK_OPSIZE (5);
11617                         token = read32 (ip + 1);
11618                         klass = mini_get_class (method, token, generic_context);
11619                         CHECK_TYPELOAD (klass);
11620                         if (ins_flag & MONO_INST_VOLATILE) {
11621                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11622                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11623                         }
11624                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11625                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11626                         ins->flags |= ins_flag;
11627                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11628                                         generic_class_is_reference_type (cfg, klass)) {
11629                                 /* insert call to write barrier */
11630                                 emit_write_barrier (cfg, sp [0], sp [1]);
11631                         }
11632                         ins_flag = 0;
11633                         ip += 5;
11634                         inline_costs += 1;
11635                         break;
11636
11637                         /*
11638                          * Array opcodes
11639                          */
11640                 case CEE_NEWARR: {
11641                         MonoInst *len_ins;
11642                         const char *data_ptr;
11643                         int data_size = 0;
11644                         guint32 field_token;
11645
11646                         CHECK_STACK (1);
11647                         --sp;
11648
11649                         CHECK_OPSIZE (5);
11650                         token = read32 (ip + 1);
11651
11652                         klass = mini_get_class (method, token, generic_context);
11653                         CHECK_TYPELOAD (klass);
11654
11655                         context_used = mini_class_check_context_used (cfg, klass);
11656
11657                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11658                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11659                                 ins->sreg1 = sp [0]->dreg;
11660                                 ins->type = STACK_I4;
11661                                 ins->dreg = alloc_ireg (cfg);
11662                                 MONO_ADD_INS (cfg->cbb, ins);
11663                                 *sp = mono_decompose_opcode (cfg, ins);
11664                         }
11665
11666                         if (context_used) {
11667                                 MonoInst *args [3];
11668                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11669                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11670
11671                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11672
11673                                 /* vtable */
11674                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11675                                         array_class, MONO_RGCTX_INFO_VTABLE);
11676                                 /* array len */
11677                                 args [1] = sp [0];
11678
11679                                 if (managed_alloc)
11680                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11681                                 else
11682                                         ins = mono_emit_jit_icall (cfg, mono_array_new_specific, args);
11683                         } else {
11684                                 if (cfg->opt & MONO_OPT_SHARED) {
11685                                         /* Decompose now to avoid problems with references to the domainvar */
11686                                         MonoInst *iargs [3];
11687
11688                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11689                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11690                                         iargs [2] = sp [0];
11691
11692                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
11693                                 } else {
11694                                         /* Decompose later since it is needed by abcrem */
11695                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11696                                         mono_class_vtable (cfg->domain, array_type);
11697                                         CHECK_TYPELOAD (array_type);
11698
11699                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11700                                         ins->dreg = alloc_ireg_ref (cfg);
11701                                         ins->sreg1 = sp [0]->dreg;
11702                                         ins->inst_newa_class = klass;
11703                                         ins->type = STACK_OBJ;
11704                                         ins->klass = array_type;
11705                                         MONO_ADD_INS (cfg->cbb, ins);
11706                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11707                                         cfg->cbb->has_array_access = TRUE;
11708
11709                                         /* Needed so mono_emit_load_get_addr () gets called */
11710                                         mono_get_got_var (cfg);
11711                                 }
11712                         }
11713
11714                         len_ins = sp [0];
11715                         ip += 5;
11716                         *sp++ = ins;
11717                         inline_costs += 1;
11718
11719                         /*
11720                          * we inline/optimize the initialization sequence if possible.
11721                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11722                          * for small sizes open code the memcpy
11723                          * ensure the rva field is big enough
11724                          */
11725                         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))) {
11726                                 MonoMethod *memcpy_method = get_memcpy_method ();
11727                                 MonoInst *iargs [3];
11728                                 int add_reg = alloc_ireg_mp (cfg);
11729
11730                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11731                                 if (cfg->compile_aot) {
11732                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11733                                 } else {
11734                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11735                                 }
11736                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11737                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11738                                 ip += 11;
11739                         }
11740
11741                         break;
11742                 }
11743                 case CEE_LDLEN:
11744                         CHECK_STACK (1);
11745                         --sp;
11746                         if (sp [0]->type != STACK_OBJ)
11747                                 UNVERIFIED;
11748
11749                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11750                         ins->dreg = alloc_preg (cfg);
11751                         ins->sreg1 = sp [0]->dreg;
11752                         ins->type = STACK_I4;
11753                         /* This flag will be inherited by the decomposition */
11754                         ins->flags |= MONO_INST_FAULT;
11755                         MONO_ADD_INS (cfg->cbb, ins);
11756                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11757                         cfg->cbb->has_array_access = TRUE;
11758                         ip ++;
11759                         *sp++ = ins;
11760                         break;
11761                 case CEE_LDELEMA:
11762                         CHECK_STACK (2);
11763                         sp -= 2;
11764                         CHECK_OPSIZE (5);
11765                         if (sp [0]->type != STACK_OBJ)
11766                                 UNVERIFIED;
11767
11768                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11769
11770                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11771                         CHECK_TYPELOAD (klass);
11772                         /* we need to make sure that this array is exactly the type it needs
11773                          * to be for correctness. the wrappers are lax with their usage
11774                          * so we need to ignore them here
11775                          */
11776                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11777                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11778                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11779                                 CHECK_TYPELOAD (array_class);
11780                         }
11781
11782                         readonly = FALSE;
11783                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11784                         *sp++ = ins;
11785                         ip += 5;
11786                         break;
11787                 case CEE_LDELEM:
11788                 case CEE_LDELEM_I1:
11789                 case CEE_LDELEM_U1:
11790                 case CEE_LDELEM_I2:
11791                 case CEE_LDELEM_U2:
11792                 case CEE_LDELEM_I4:
11793                 case CEE_LDELEM_U4:
11794                 case CEE_LDELEM_I8:
11795                 case CEE_LDELEM_I:
11796                 case CEE_LDELEM_R4:
11797                 case CEE_LDELEM_R8:
11798                 case CEE_LDELEM_REF: {
11799                         MonoInst *addr;
11800
11801                         CHECK_STACK (2);
11802                         sp -= 2;
11803
11804                         if (*ip == CEE_LDELEM) {
11805                                 CHECK_OPSIZE (5);
11806                                 token = read32 (ip + 1);
11807                                 klass = mini_get_class (method, token, generic_context);
11808                                 CHECK_TYPELOAD (klass);
11809                                 mono_class_init (klass);
11810                         }
11811                         else
11812                                 klass = array_access_to_klass (*ip);
11813
11814                         if (sp [0]->type != STACK_OBJ)
11815                                 UNVERIFIED;
11816
11817                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11818
11819                         if (mini_is_gsharedvt_variable_klass (klass)) {
11820                                 // FIXME-VT: OP_ICONST optimization
11821                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11822                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11823                                 ins->opcode = OP_LOADV_MEMBASE;
11824                         } else if (sp [1]->opcode == OP_ICONST) {
11825                                 int array_reg = sp [0]->dreg;
11826                                 int index_reg = sp [1]->dreg;
11827                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11828
11829                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11830                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11831
11832                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11833                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11834                         } else {
11835                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11836                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11837                         }
11838                         *sp++ = ins;
11839                         if (*ip == CEE_LDELEM)
11840                                 ip += 5;
11841                         else
11842                                 ++ip;
11843                         break;
11844                 }
11845                 case CEE_STELEM_I:
11846                 case CEE_STELEM_I1:
11847                 case CEE_STELEM_I2:
11848                 case CEE_STELEM_I4:
11849                 case CEE_STELEM_I8:
11850                 case CEE_STELEM_R4:
11851                 case CEE_STELEM_R8:
11852                 case CEE_STELEM_REF:
11853                 case CEE_STELEM: {
11854                         CHECK_STACK (3);
11855                         sp -= 3;
11856
11857                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11858
11859                         if (*ip == CEE_STELEM) {
11860                                 CHECK_OPSIZE (5);
11861                                 token = read32 (ip + 1);
11862                                 klass = mini_get_class (method, token, generic_context);
11863                                 CHECK_TYPELOAD (klass);
11864                                 mono_class_init (klass);
11865                         }
11866                         else
11867                                 klass = array_access_to_klass (*ip);
11868
11869                         if (sp [0]->type != STACK_OBJ)
11870                                 UNVERIFIED;
11871
11872                         emit_array_store (cfg, klass, sp, TRUE);
11873
11874                         if (*ip == CEE_STELEM)
11875                                 ip += 5;
11876                         else
11877                                 ++ip;
11878                         inline_costs += 1;
11879                         break;
11880                 }
11881                 case CEE_CKFINITE: {
11882                         CHECK_STACK (1);
11883                         --sp;
11884
11885                         if (cfg->llvm_only) {
11886                                 MonoInst *iargs [1];
11887
11888                                 iargs [0] = sp [0];
11889                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11890                         } else  {
11891                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11892                                 ins->sreg1 = sp [0]->dreg;
11893                                 ins->dreg = alloc_freg (cfg);
11894                                 ins->type = STACK_R8;
11895                                 MONO_ADD_INS (cfg->cbb, ins);
11896
11897                                 *sp++ = mono_decompose_opcode (cfg, ins);
11898                         }
11899
11900                         ++ip;
11901                         break;
11902                 }
11903                 case CEE_REFANYVAL: {
11904                         MonoInst *src_var, *src;
11905
11906                         int klass_reg = alloc_preg (cfg);
11907                         int dreg = alloc_preg (cfg);
11908
11909                         GSHAREDVT_FAILURE (*ip);
11910
11911                         CHECK_STACK (1);
11912                         MONO_INST_NEW (cfg, ins, *ip);
11913                         --sp;
11914                         CHECK_OPSIZE (5);
11915                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11916                         CHECK_TYPELOAD (klass);
11917
11918                         context_used = mini_class_check_context_used (cfg, klass);
11919
11920                         // FIXME:
11921                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11922                         if (!src_var)
11923                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11924                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11925                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11926
11927                         if (context_used) {
11928                                 MonoInst *klass_ins;
11929
11930                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
11931                                                 klass, MONO_RGCTX_INFO_KLASS);
11932
11933                                 // FIXME:
11934                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11935                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11936                         } else {
11937                                 mini_emit_class_check (cfg, klass_reg, klass);
11938                         }
11939                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11940                         ins->type = STACK_MP;
11941                         ins->klass = klass;
11942                         *sp++ = ins;
11943                         ip += 5;
11944                         break;
11945                 }
11946                 case CEE_MKREFANY: {
11947                         MonoInst *loc, *addr;
11948
11949                         GSHAREDVT_FAILURE (*ip);
11950
11951                         CHECK_STACK (1);
11952                         MONO_INST_NEW (cfg, ins, *ip);
11953                         --sp;
11954                         CHECK_OPSIZE (5);
11955                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11956                         CHECK_TYPELOAD (klass);
11957
11958                         context_used = mini_class_check_context_used (cfg, klass);
11959
11960                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11961                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11962
11963                         if (context_used) {
11964                                 MonoInst *const_ins;
11965                                 int type_reg = alloc_preg (cfg);
11966
11967                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11968                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11969                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11970                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11971                         } else if (cfg->compile_aot) {
11972                                 int const_reg = alloc_preg (cfg);
11973                                 int type_reg = alloc_preg (cfg);
11974
11975                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11976                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11977                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11978                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11979                         } else {
11980                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
11981                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
11982                         }
11983                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11984
11985                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11986                         ins->type = STACK_VTYPE;
11987                         ins->klass = mono_defaults.typed_reference_class;
11988                         *sp++ = ins;
11989                         ip += 5;
11990                         break;
11991                 }
11992                 case CEE_LDTOKEN: {
11993                         gpointer handle;
11994                         MonoClass *handle_class;
11995
11996                         CHECK_STACK_OVF (1);
11997
11998                         CHECK_OPSIZE (5);
11999                         n = read32 (ip + 1);
12000
12001                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12002                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12003                                 handle = mono_method_get_wrapper_data (method, n);
12004                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12005                                 if (handle_class == mono_defaults.typehandle_class)
12006                                         handle = &((MonoClass*)handle)->byval_arg;
12007                         }
12008                         else {
12009                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12010                                 CHECK_CFG_ERROR;
12011                         }
12012                         if (!handle)
12013                                 LOAD_ERROR;
12014                         mono_class_init (handle_class);
12015                         if (cfg->gshared) {
12016                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12017                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12018                                         /* This case handles ldtoken
12019                                            of an open type, like for
12020                                            typeof(Gen<>). */
12021                                         context_used = 0;
12022                                 } else if (handle_class == mono_defaults.typehandle_class) {
12023                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12024                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12025                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12026                                 else if (handle_class == mono_defaults.methodhandle_class)
12027                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12028                                 else
12029                                         g_assert_not_reached ();
12030                         }
12031
12032                         if ((cfg->opt & MONO_OPT_SHARED) &&
12033                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12034                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12035                                 MonoInst *addr, *vtvar, *iargs [3];
12036                                 int method_context_used;
12037
12038                                 method_context_used = mini_method_check_context_used (cfg, method);
12039
12040                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12041
12042                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12043                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12044                                 if (method_context_used) {
12045                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12046                                                 method, MONO_RGCTX_INFO_METHOD);
12047                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12048                                 } else {
12049                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12050                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12051                                 }
12052                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12053
12054                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12055
12056                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12057                         } else {
12058                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12059                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12060                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12061                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12062                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12063                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12064
12065                                         mono_class_init (tclass);
12066                                         if (context_used) {
12067                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12068                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12069                                         } else if (cfg->compile_aot) {
12070                                                 if (method->wrapper_type) {
12071                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12072                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12073                                                                 /* Special case for static synchronized wrappers */
12074                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12075                                                         } else {
12076                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12077                                                                 /* FIXME: n is not a normal token */
12078                                                                 DISABLE_AOT (cfg);
12079                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12080                                                         }
12081                                                 } else {
12082                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12083                                                 }
12084                                         } else {
12085                                                 EMIT_NEW_PCONST (cfg, ins, mono_type_get_object (cfg->domain, (MonoType *)handle));
12086                                         }
12087                                         ins->type = STACK_OBJ;
12088                                         ins->klass = cmethod->klass;
12089                                         ip += 5;
12090                                 } else {
12091                                         MonoInst *addr, *vtvar;
12092
12093                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12094
12095                                         if (context_used) {
12096                                                 if (handle_class == mono_defaults.typehandle_class) {
12097                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12098                                                                         mono_class_from_mono_type ((MonoType *)handle),
12099                                                                         MONO_RGCTX_INFO_TYPE);
12100                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12101                                                         ins = emit_get_rgctx_method (cfg, context_used,
12102                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12103                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12104                                                         ins = emit_get_rgctx_field (cfg, context_used,
12105                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12106                                                 } else {
12107                                                         g_assert_not_reached ();
12108                                                 }
12109                                         } else if (cfg->compile_aot) {
12110                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12111                                         } else {
12112                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12113                                         }
12114                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12115                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12116                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12117                                 }
12118                         }
12119
12120                         *sp++ = ins;
12121                         ip += 5;
12122                         break;
12123                 }
12124                 case CEE_THROW:
12125                         CHECK_STACK (1);
12126                         MONO_INST_NEW (cfg, ins, OP_THROW);
12127                         --sp;
12128                         ins->sreg1 = sp [0]->dreg;
12129                         ip++;
12130                         cfg->cbb->out_of_line = TRUE;
12131                         MONO_ADD_INS (cfg->cbb, ins);
12132                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12133                         MONO_ADD_INS (cfg->cbb, ins);
12134                         sp = stack_start;
12135
12136                         link_bblock (cfg, cfg->cbb, end_bblock);
12137                         start_new_bblock = 1;
12138                         /* This can complicate code generation for llvm since the return value might not be defined */
12139                         if (COMPILE_LLVM (cfg))
12140                                 INLINE_FAILURE ("throw");
12141                         break;
12142                 case CEE_ENDFINALLY:
12143                         /* mono_save_seq_point_info () depends on this */
12144                         if (sp != stack_start)
12145                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12146                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12147                         MONO_ADD_INS (cfg->cbb, ins);
12148                         ip++;
12149                         start_new_bblock = 1;
12150
12151                         /*
12152                          * Control will leave the method so empty the stack, otherwise
12153                          * the next basic block will start with a nonempty stack.
12154                          */
12155                         while (sp != stack_start) {
12156                                 sp--;
12157                         }
12158                         break;
12159                 case CEE_LEAVE:
12160                 case CEE_LEAVE_S: {
12161                         GList *handlers;
12162
12163                         if (*ip == CEE_LEAVE) {
12164                                 CHECK_OPSIZE (5);
12165                                 target = ip + 5 + (gint32)read32(ip + 1);
12166                         } else {
12167                                 CHECK_OPSIZE (2);
12168                                 target = ip + 2 + (signed char)(ip [1]);
12169                         }
12170
12171                         /* empty the stack */
12172                         while (sp != stack_start) {
12173                                 sp--;
12174                         }
12175
12176                         /*
12177                          * If this leave statement is in a catch block, check for a
12178                          * pending exception, and rethrow it if necessary.
12179                          * We avoid doing this in runtime invoke wrappers, since those are called
12180                          * by native code which excepts the wrapper to catch all exceptions.
12181                          */
12182                         for (i = 0; i < header->num_clauses; ++i) {
12183                                 MonoExceptionClause *clause = &header->clauses [i];
12184
12185                                 /*
12186                                  * Use <= in the final comparison to handle clauses with multiple
12187                                  * leave statements, like in bug #78024.
12188                                  * The ordering of the exception clauses guarantees that we find the
12189                                  * innermost clause.
12190                                  */
12191                                 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) {
12192                                         MonoInst *exc_ins;
12193                                         MonoBasicBlock *dont_throw;
12194
12195                                         /*
12196                                           MonoInst *load;
12197
12198                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12199                                         */
12200
12201                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12202
12203                                         NEW_BBLOCK (cfg, dont_throw);
12204
12205                                         /*
12206                                          * Currently, we always rethrow the abort exception, despite the
12207                                          * fact that this is not correct. See thread6.cs for an example.
12208                                          * But propagating the abort exception is more important than
12209                                          * getting the sematics right.
12210                                          */
12211                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12212                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12213                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12214
12215                                         MONO_START_BB (cfg, dont_throw);
12216                                 }
12217                         }
12218
12219 #ifdef ENABLE_LLVM
12220                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12221 #endif
12222
12223                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12224                                 GList *tmp;
12225                                 MonoExceptionClause *clause;
12226
12227                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12228                                         clause = (MonoExceptionClause *)tmp->data;
12229                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12230                                         g_assert (tblock);
12231                                         link_bblock (cfg, cfg->cbb, tblock);
12232                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12233                                         ins->inst_target_bb = tblock;
12234                                         ins->inst_eh_block = clause;
12235                                         MONO_ADD_INS (cfg->cbb, ins);
12236                                         cfg->cbb->has_call_handler = 1;
12237                                         if (COMPILE_LLVM (cfg)) {
12238                                                 MonoBasicBlock *target_bb;
12239
12240                                                 /*
12241                                                  * Link the finally bblock with the target, since it will
12242                                                  * conceptually branch there.
12243                                                  * FIXME: Have to link the bblock containing the endfinally.
12244                                                  */
12245                                                 GET_BBLOCK (cfg, target_bb, target);
12246                                                 link_bblock (cfg, tblock, target_bb);
12247                                         }
12248                                 }
12249                                 g_list_free (handlers);
12250                         }
12251
12252                         MONO_INST_NEW (cfg, ins, OP_BR);
12253                         MONO_ADD_INS (cfg->cbb, ins);
12254                         GET_BBLOCK (cfg, tblock, target);
12255                         link_bblock (cfg, cfg->cbb, tblock);
12256                         ins->inst_target_bb = tblock;
12257
12258                         start_new_bblock = 1;
12259
12260                         if (*ip == CEE_LEAVE)
12261                                 ip += 5;
12262                         else
12263                                 ip += 2;
12264
12265                         break;
12266                 }
12267
12268                         /*
12269                          * Mono specific opcodes
12270                          */
12271                 case MONO_CUSTOM_PREFIX: {
12272
12273                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12274
12275                         CHECK_OPSIZE (2);
12276                         switch (ip [1]) {
12277                         case CEE_MONO_ICALL: {
12278                                 gpointer func;
12279                                 MonoJitICallInfo *info;
12280
12281                                 token = read32 (ip + 2);
12282                                 func = mono_method_get_wrapper_data (method, token);
12283                                 info = mono_find_jit_icall_by_addr (func);
12284                                 if (!info)
12285                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12286                                 g_assert (info);
12287
12288                                 CHECK_STACK (info->sig->param_count);
12289                                 sp -= info->sig->param_count;
12290
12291                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12292                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12293                                         *sp++ = ins;
12294
12295                                 ip += 6;
12296                                 inline_costs += 10 * num_calls++;
12297
12298                                 break;
12299                         }
12300                         case CEE_MONO_LDPTR_CARD_TABLE:
12301                         case CEE_MONO_LDPTR_NURSERY_START:
12302                         case CEE_MONO_LDPTR_NURSERY_BITS:
12303                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12304                                 CHECK_STACK_OVF (1);
12305
12306                                 switch (ip [1]) {
12307                                         case CEE_MONO_LDPTR_CARD_TABLE:
12308                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12309                                                 break;
12310                                         case CEE_MONO_LDPTR_NURSERY_START:
12311                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12312                                                 break;
12313                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12314                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12315                                                 break;
12316                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12317                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12318                                                 break;
12319                                 }
12320
12321                                 *sp++ = ins;
12322                                 ip += 2;
12323                                 inline_costs += 10 * num_calls++;
12324                                 break;
12325                         }
12326                         case CEE_MONO_LDPTR: {
12327                                 gpointer ptr;
12328
12329                                 CHECK_STACK_OVF (1);
12330                                 CHECK_OPSIZE (6);
12331                                 token = read32 (ip + 2);
12332
12333                                 ptr = mono_method_get_wrapper_data (method, token);
12334                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12335                                 *sp++ = ins;
12336                                 ip += 6;
12337                                 inline_costs += 10 * num_calls++;
12338                                 /* Can't embed random pointers into AOT code */
12339                                 DISABLE_AOT (cfg);
12340                                 break;
12341                         }
12342                         case CEE_MONO_JIT_ICALL_ADDR: {
12343                                 MonoJitICallInfo *callinfo;
12344                                 gpointer ptr;
12345
12346                                 CHECK_STACK_OVF (1);
12347                                 CHECK_OPSIZE (6);
12348                                 token = read32 (ip + 2);
12349
12350                                 ptr = mono_method_get_wrapper_data (method, token);
12351                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12352                                 g_assert (callinfo);
12353                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12354                                 *sp++ = ins;
12355                                 ip += 6;
12356                                 inline_costs += 10 * num_calls++;
12357                                 break;
12358                         }
12359                         case CEE_MONO_ICALL_ADDR: {
12360                                 MonoMethod *cmethod;
12361                                 gpointer ptr;
12362
12363                                 CHECK_STACK_OVF (1);
12364                                 CHECK_OPSIZE (6);
12365                                 token = read32 (ip + 2);
12366
12367                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12368
12369                                 if (cfg->compile_aot) {
12370                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12371                                 } else {
12372                                         ptr = mono_lookup_internal_call (cmethod);
12373                                         g_assert (ptr);
12374                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12375                                 }
12376                                 *sp++ = ins;
12377                                 ip += 6;
12378                                 break;
12379                         }
12380                         case CEE_MONO_VTADDR: {
12381                                 MonoInst *src_var, *src;
12382
12383                                 CHECK_STACK (1);
12384                                 --sp;
12385
12386                                 // FIXME:
12387                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12388                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12389                                 *sp++ = src;
12390                                 ip += 2;
12391                                 break;
12392                         }
12393                         case CEE_MONO_NEWOBJ: {
12394                                 MonoInst *iargs [2];
12395
12396                                 CHECK_STACK_OVF (1);
12397                                 CHECK_OPSIZE (6);
12398                                 token = read32 (ip + 2);
12399                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12400                                 mono_class_init (klass);
12401                                 NEW_DOMAINCONST (cfg, iargs [0]);
12402                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12403                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12404                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12405                                 *sp++ = mono_emit_jit_icall (cfg, mono_object_new, iargs);
12406                                 ip += 6;
12407                                 inline_costs += 10 * num_calls++;
12408                                 break;
12409                         }
12410                         case CEE_MONO_OBJADDR:
12411                                 CHECK_STACK (1);
12412                                 --sp;
12413                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12414                                 ins->dreg = alloc_ireg_mp (cfg);
12415                                 ins->sreg1 = sp [0]->dreg;
12416                                 ins->type = STACK_MP;
12417                                 MONO_ADD_INS (cfg->cbb, ins);
12418                                 *sp++ = ins;
12419                                 ip += 2;
12420                                 break;
12421                         case CEE_MONO_LDNATIVEOBJ:
12422                                 /*
12423                                  * Similar to LDOBJ, but instead load the unmanaged
12424                                  * representation of the vtype to the stack.
12425                                  */
12426                                 CHECK_STACK (1);
12427                                 CHECK_OPSIZE (6);
12428                                 --sp;
12429                                 token = read32 (ip + 2);
12430                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12431                                 g_assert (klass->valuetype);
12432                                 mono_class_init (klass);
12433
12434                                 {
12435                                         MonoInst *src, *dest, *temp;
12436
12437                                         src = sp [0];
12438                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12439                                         temp->backend.is_pinvoke = 1;
12440                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12441                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12442
12443                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12444                                         dest->type = STACK_VTYPE;
12445                                         dest->klass = klass;
12446
12447                                         *sp ++ = dest;
12448                                         ip += 6;
12449                                 }
12450                                 break;
12451                         case CEE_MONO_RETOBJ: {
12452                                 /*
12453                                  * Same as RET, but return the native representation of a vtype
12454                                  * to the caller.
12455                                  */
12456                                 g_assert (cfg->ret);
12457                                 g_assert (mono_method_signature (method)->pinvoke);
12458                                 CHECK_STACK (1);
12459                                 --sp;
12460
12461                                 CHECK_OPSIZE (6);
12462                                 token = read32 (ip + 2);
12463                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12464
12465                                 if (!cfg->vret_addr) {
12466                                         g_assert (cfg->ret_var_is_local);
12467
12468                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12469                                 } else {
12470                                         EMIT_NEW_RETLOADA (cfg, ins);
12471                                 }
12472                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12473
12474                                 if (sp != stack_start)
12475                                         UNVERIFIED;
12476
12477                                 MONO_INST_NEW (cfg, ins, OP_BR);
12478                                 ins->inst_target_bb = end_bblock;
12479                                 MONO_ADD_INS (cfg->cbb, ins);
12480                                 link_bblock (cfg, cfg->cbb, end_bblock);
12481                                 start_new_bblock = 1;
12482                                 ip += 6;
12483                                 break;
12484                         }
12485                         case CEE_MONO_CISINST:
12486                         case CEE_MONO_CCASTCLASS: {
12487                                 int token;
12488                                 CHECK_STACK (1);
12489                                 --sp;
12490                                 CHECK_OPSIZE (6);
12491                                 token = read32 (ip + 2);
12492                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12493                                 if (ip [1] == CEE_MONO_CISINST)
12494                                         ins = handle_cisinst (cfg, klass, sp [0]);
12495                                 else
12496                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12497                                 *sp++ = ins;
12498                                 ip += 6;
12499                                 break;
12500                         }
12501                         case CEE_MONO_SAVE_LMF:
12502                         case CEE_MONO_RESTORE_LMF:
12503                                 ip += 2;
12504                                 break;
12505                         case CEE_MONO_CLASSCONST:
12506                                 CHECK_STACK_OVF (1);
12507                                 CHECK_OPSIZE (6);
12508                                 token = read32 (ip + 2);
12509                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12510                                 *sp++ = ins;
12511                                 ip += 6;
12512                                 inline_costs += 10 * num_calls++;
12513                                 break;
12514                         case CEE_MONO_NOT_TAKEN:
12515                                 cfg->cbb->out_of_line = TRUE;
12516                                 ip += 2;
12517                                 break;
12518                         case CEE_MONO_TLS: {
12519                                 MonoTlsKey key;
12520
12521                                 CHECK_STACK_OVF (1);
12522                                 CHECK_OPSIZE (6);
12523                                 key = (MonoTlsKey)read32 (ip + 2);
12524                                 g_assert (key < TLS_KEY_NUM);
12525
12526                                 ins = mono_create_tls_get (cfg, key);
12527                                 if (!ins) {
12528                                         if (cfg->compile_aot) {
12529                                                 DISABLE_AOT (cfg);
12530                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12531                                                 ins->dreg = alloc_preg (cfg);
12532                                                 ins->type = STACK_PTR;
12533                                         } else {
12534                                                 g_assert_not_reached ();
12535                                         }
12536                                 }
12537                                 ins->type = STACK_PTR;
12538                                 MONO_ADD_INS (cfg->cbb, ins);
12539                                 *sp++ = ins;
12540                                 ip += 6;
12541                                 break;
12542                         }
12543                         case CEE_MONO_DYN_CALL: {
12544                                 MonoCallInst *call;
12545
12546                                 /* It would be easier to call a trampoline, but that would put an
12547                                  * extra frame on the stack, confusing exception handling. So
12548                                  * implement it inline using an opcode for now.
12549                                  */
12550
12551                                 if (!cfg->dyn_call_var) {
12552                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12553                                         /* prevent it from being register allocated */
12554                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12555                                 }
12556
12557                                 /* Has to use a call inst since it local regalloc expects it */
12558                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12559                                 ins = (MonoInst*)call;
12560                                 sp -= 2;
12561                                 ins->sreg1 = sp [0]->dreg;
12562                                 ins->sreg2 = sp [1]->dreg;
12563                                 MONO_ADD_INS (cfg->cbb, ins);
12564
12565                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12566
12567                                 ip += 2;
12568                                 inline_costs += 10 * num_calls++;
12569
12570                                 break;
12571                         }
12572                         case CEE_MONO_MEMORY_BARRIER: {
12573                                 CHECK_OPSIZE (6);
12574                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12575                                 ip += 6;
12576                                 break;
12577                         }
12578                         case CEE_MONO_JIT_ATTACH: {
12579                                 MonoInst *args [16], *domain_ins;
12580                                 MonoInst *ad_ins, *jit_tls_ins;
12581                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12582
12583                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12584
12585                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12586                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12587
12588                                 ad_ins = mono_get_domain_intrinsic (cfg);
12589                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12590
12591                                 if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12592                                         NEW_BBLOCK (cfg, next_bb);
12593                                         NEW_BBLOCK (cfg, call_bb);
12594
12595                                         if (cfg->compile_aot) {
12596                                                 /* AOT code is only used in the root domain */
12597                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12598                                         } else {
12599                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12600                                         }
12601                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12602                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12603                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12604
12605                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12606                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12607                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12608
12609                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12610                                         MONO_START_BB (cfg, call_bb);
12611                                 }
12612
12613                                 if (cfg->compile_aot) {
12614                                         /* AOT code is only used in the root domain */
12615                                         EMIT_NEW_PCONST (cfg, args [0], NULL);
12616                                 } else {
12617                                         EMIT_NEW_PCONST (cfg, args [0], cfg->domain);
12618                                 }
12619                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12620                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12621
12622                                 if (next_bb)
12623                                         MONO_START_BB (cfg, next_bb);
12624                                 ip += 2;
12625                                 break;
12626                         }
12627                         case CEE_MONO_JIT_DETACH: {
12628                                 MonoInst *args [16];
12629
12630                                 /* Restore the original domain */
12631                                 dreg = alloc_ireg (cfg);
12632                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12633                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12634                                 ip += 2;
12635                                 break;
12636                         }
12637                         default:
12638                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12639                                 break;
12640                         }
12641                         break;
12642                 }
12643
12644                 case CEE_PREFIX1: {
12645                         CHECK_OPSIZE (2);
12646                         switch (ip [1]) {
12647                         case CEE_ARGLIST: {
12648                                 /* somewhat similar to LDTOKEN */
12649                                 MonoInst *addr, *vtvar;
12650                                 CHECK_STACK_OVF (1);
12651                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12652
12653                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12654                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12655
12656                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12657                                 ins->type = STACK_VTYPE;
12658                                 ins->klass = mono_defaults.argumenthandle_class;
12659                                 *sp++ = ins;
12660                                 ip += 2;
12661                                 break;
12662                         }
12663                         case CEE_CEQ:
12664                         case CEE_CGT:
12665                         case CEE_CGT_UN:
12666                         case CEE_CLT:
12667                         case CEE_CLT_UN: {
12668                                 MonoInst *cmp, *arg1, *arg2;
12669
12670                                 CHECK_STACK (2);
12671                                 sp -= 2;
12672                                 arg1 = sp [0];
12673                                 arg2 = sp [1];
12674
12675                                 /*
12676                                  * The following transforms:
12677                                  *    CEE_CEQ    into OP_CEQ
12678                                  *    CEE_CGT    into OP_CGT
12679                                  *    CEE_CGT_UN into OP_CGT_UN
12680                                  *    CEE_CLT    into OP_CLT
12681                                  *    CEE_CLT_UN into OP_CLT_UN
12682                                  */
12683                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12684
12685                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12686                                 cmp->sreg1 = arg1->dreg;
12687                                 cmp->sreg2 = arg2->dreg;
12688                                 type_from_op (cfg, cmp, arg1, arg2);
12689                                 CHECK_TYPE (cmp);
12690                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12691                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12692                                         cmp->opcode = OP_LCOMPARE;
12693                                 else if (arg1->type == STACK_R4)
12694                                         cmp->opcode = OP_RCOMPARE;
12695                                 else if (arg1->type == STACK_R8)
12696                                         cmp->opcode = OP_FCOMPARE;
12697                                 else
12698                                         cmp->opcode = OP_ICOMPARE;
12699                                 MONO_ADD_INS (cfg->cbb, cmp);
12700                                 ins->type = STACK_I4;
12701                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12702                                 type_from_op (cfg, ins, arg1, arg2);
12703
12704                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12705                                         /*
12706                                          * The backends expect the fceq opcodes to do the
12707                                          * comparison too.
12708                                          */
12709                                         ins->sreg1 = cmp->sreg1;
12710                                         ins->sreg2 = cmp->sreg2;
12711                                         NULLIFY_INS (cmp);
12712                                 }
12713                                 MONO_ADD_INS (cfg->cbb, ins);
12714                                 *sp++ = ins;
12715                                 ip += 2;
12716                                 break;
12717                         }
12718                         case CEE_LDFTN: {
12719                                 MonoInst *argconst;
12720                                 MonoMethod *cil_method;
12721
12722                                 CHECK_STACK_OVF (1);
12723                                 CHECK_OPSIZE (6);
12724                                 n = read32 (ip + 2);
12725                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12726                                 if (!cmethod || mono_loader_get_last_error ())
12727                                         LOAD_ERROR;
12728                                 mono_class_init (cmethod->klass);
12729
12730                                 mono_save_token_info (cfg, image, n, cmethod);
12731
12732                                 context_used = mini_method_check_context_used (cfg, cmethod);
12733
12734                                 cil_method = cmethod;
12735                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12736                                         METHOD_ACCESS_FAILURE (method, cil_method);
12737
12738                                 if (mono_security_core_clr_enabled ())
12739                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12740
12741                                 /*
12742                                  * Optimize the common case of ldftn+delegate creation
12743                                  */
12744                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12745                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12746                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12747                                                 MonoInst *target_ins, *handle_ins;
12748                                                 MonoMethod *invoke;
12749                                                 int invoke_context_used;
12750
12751                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12752                                                 if (!invoke || !mono_method_signature (invoke))
12753                                                         LOAD_ERROR;
12754
12755                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12756
12757                                                 target_ins = sp [-1];
12758
12759                                                 if (mono_security_core_clr_enabled ())
12760                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12761
12762                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12763                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12764                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12765                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12766                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12767                                                         }
12768                                                 }
12769
12770                                                 /* FIXME: SGEN support */
12771                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12772                                                         ip += 6;
12773                                                         if (cfg->verbose_level > 3)
12774                                                                 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));
12775                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12776                                                                 sp --;
12777                                                                 *sp = handle_ins;
12778                                                                 CHECK_CFG_EXCEPTION;
12779                                                                 ip += 5;
12780                                                                 sp ++;
12781                                                                 break;
12782                                                         }
12783                                                         ip -= 6;
12784                                                 }
12785                                         }
12786                                 }
12787
12788                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12789                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12790                                 *sp++ = ins;
12791
12792                                 ip += 6;
12793                                 inline_costs += 10 * num_calls++;
12794                                 break;
12795                         }
12796                         case CEE_LDVIRTFTN: {
12797                                 MonoInst *args [2];
12798
12799                                 CHECK_STACK (1);
12800                                 CHECK_OPSIZE (6);
12801                                 n = read32 (ip + 2);
12802                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12803                                 if (!cmethod || mono_loader_get_last_error ())
12804                                         LOAD_ERROR;
12805                                 mono_class_init (cmethod->klass);
12806
12807                                 context_used = mini_method_check_context_used (cfg, cmethod);
12808
12809                                 if (mono_security_core_clr_enabled ())
12810                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12811
12812                                 /*
12813                                  * Optimize the common case of ldvirtftn+delegate creation
12814                                  */
12815                                 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)) {
12816                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12817                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12818                                                 MonoInst *target_ins, *handle_ins;
12819                                                 MonoMethod *invoke;
12820                                                 int invoke_context_used;
12821                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12822
12823                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12824                                                 if (!invoke || !mono_method_signature (invoke))
12825                                                         LOAD_ERROR;
12826
12827                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12828
12829                                                 target_ins = sp [-1];
12830
12831                                                 if (mono_security_core_clr_enabled ())
12832                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12833
12834                                                 /* FIXME: SGEN support */
12835                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12836                                                         ip += 6;
12837                                                         if (cfg->verbose_level > 3)
12838                                                                 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));
12839                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12840                                                                 sp -= 2;
12841                                                                 *sp = handle_ins;
12842                                                                 CHECK_CFG_EXCEPTION;
12843                                                                 ip += 5;
12844                                                                 sp ++;
12845                                                                 break;
12846                                                         }
12847                                                         ip -= 6;
12848                                                 }
12849                                         }
12850                                 }
12851
12852                                 --sp;
12853                                 args [0] = *sp;
12854
12855                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12856                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12857
12858                                 if (context_used)
12859                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12860                                 else
12861                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12862
12863                                 ip += 6;
12864                                 inline_costs += 10 * num_calls++;
12865                                 break;
12866                         }
12867                         case CEE_LDARG:
12868                                 CHECK_STACK_OVF (1);
12869                                 CHECK_OPSIZE (4);
12870                                 n = read16 (ip + 2);
12871                                 CHECK_ARG (n);
12872                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12873                                 *sp++ = ins;
12874                                 ip += 4;
12875                                 break;
12876                         case CEE_LDARGA:
12877                                 CHECK_STACK_OVF (1);
12878                                 CHECK_OPSIZE (4);
12879                                 n = read16 (ip + 2);
12880                                 CHECK_ARG (n);
12881                                 NEW_ARGLOADA (cfg, ins, n);
12882                                 MONO_ADD_INS (cfg->cbb, ins);
12883                                 *sp++ = ins;
12884                                 ip += 4;
12885                                 break;
12886                         case CEE_STARG:
12887                                 CHECK_STACK (1);
12888                                 --sp;
12889                                 CHECK_OPSIZE (4);
12890                                 n = read16 (ip + 2);
12891                                 CHECK_ARG (n);
12892                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12893                                         UNVERIFIED;
12894                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12895                                 ip += 4;
12896                                 break;
12897                         case CEE_LDLOC:
12898                                 CHECK_STACK_OVF (1);
12899                                 CHECK_OPSIZE (4);
12900                                 n = read16 (ip + 2);
12901                                 CHECK_LOCAL (n);
12902                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12903                                 *sp++ = ins;
12904                                 ip += 4;
12905                                 break;
12906                         case CEE_LDLOCA: {
12907                                 unsigned char *tmp_ip;
12908                                 CHECK_STACK_OVF (1);
12909                                 CHECK_OPSIZE (4);
12910                                 n = read16 (ip + 2);
12911                                 CHECK_LOCAL (n);
12912
12913                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12914                                         ip = tmp_ip;
12915                                         inline_costs += 1;
12916                                         break;
12917                                 }
12918
12919                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12920                                 *sp++ = ins;
12921                                 ip += 4;
12922                                 break;
12923                         }
12924                         case CEE_STLOC:
12925                                 CHECK_STACK (1);
12926                                 --sp;
12927                                 CHECK_OPSIZE (4);
12928                                 n = read16 (ip + 2);
12929                                 CHECK_LOCAL (n);
12930                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12931                                         UNVERIFIED;
12932                                 emit_stloc_ir (cfg, sp, header, n);
12933                                 ip += 4;
12934                                 inline_costs += 1;
12935                                 break;
12936                         case CEE_LOCALLOC:
12937                                 CHECK_STACK (1);
12938                                 --sp;
12939                                 if (sp != stack_start)
12940                                         UNVERIFIED;
12941                                 if (cfg->method != method)
12942                                         /*
12943                                          * Inlining this into a loop in a parent could lead to
12944                                          * stack overflows which is different behavior than the
12945                                          * non-inlined case, thus disable inlining in this case.
12946                                          */
12947                                         INLINE_FAILURE("localloc");
12948
12949                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12950                                 ins->dreg = alloc_preg (cfg);
12951                                 ins->sreg1 = sp [0]->dreg;
12952                                 ins->type = STACK_PTR;
12953                                 MONO_ADD_INS (cfg->cbb, ins);
12954
12955                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12956                                 if (init_locals)
12957                                         ins->flags |= MONO_INST_INIT;
12958
12959                                 *sp++ = ins;
12960                                 ip += 2;
12961                                 break;
12962                         case CEE_ENDFILTER: {
12963                                 MonoExceptionClause *clause, *nearest;
12964                                 int cc;
12965
12966                                 CHECK_STACK (1);
12967                                 --sp;
12968                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12969                                         UNVERIFIED;
12970                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12971                                 ins->sreg1 = (*sp)->dreg;
12972                                 MONO_ADD_INS (cfg->cbb, ins);
12973                                 start_new_bblock = 1;
12974                                 ip += 2;
12975
12976                                 nearest = NULL;
12977                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12978                                         clause = &header->clauses [cc];
12979                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12980                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12981                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12982                                                 nearest = clause;
12983                                 }
12984                                 g_assert (nearest);
12985                                 if ((ip - header->code) != nearest->handler_offset)
12986                                         UNVERIFIED;
12987
12988                                 break;
12989                         }
12990                         case CEE_UNALIGNED_:
12991                                 ins_flag |= MONO_INST_UNALIGNED;
12992                                 /* FIXME: record alignment? we can assume 1 for now */
12993                                 CHECK_OPSIZE (3);
12994                                 ip += 3;
12995                                 break;
12996                         case CEE_VOLATILE_:
12997                                 ins_flag |= MONO_INST_VOLATILE;
12998                                 ip += 2;
12999                                 break;
13000                         case CEE_TAIL_:
13001                                 ins_flag   |= MONO_INST_TAILCALL;
13002                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13003                                 /* Can't inline tail calls at this time */
13004                                 inline_costs += 100000;
13005                                 ip += 2;
13006                                 break;
13007                         case CEE_INITOBJ:
13008                                 CHECK_STACK (1);
13009                                 --sp;
13010                                 CHECK_OPSIZE (6);
13011                                 token = read32 (ip + 2);
13012                                 klass = mini_get_class (method, token, generic_context);
13013                                 CHECK_TYPELOAD (klass);
13014                                 if (generic_class_is_reference_type (cfg, klass))
13015                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13016                                 else
13017                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13018                                 ip += 6;
13019                                 inline_costs += 1;
13020                                 break;
13021                         case CEE_CONSTRAINED_:
13022                                 CHECK_OPSIZE (6);
13023                                 token = read32 (ip + 2);
13024                                 constrained_class = mini_get_class (method, token, generic_context);
13025                                 CHECK_TYPELOAD (constrained_class);
13026                                 ip += 6;
13027                                 break;
13028                         case CEE_CPBLK:
13029                         case CEE_INITBLK: {
13030                                 MonoInst *iargs [3];
13031                                 CHECK_STACK (3);
13032                                 sp -= 3;
13033
13034                                 /* Skip optimized paths for volatile operations. */
13035                                 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)) {
13036                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13037                                 } 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)) {
13038                                         /* emit_memset only works when val == 0 */
13039                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13040                                 } else {
13041                                         MonoInst *call;
13042                                         iargs [0] = sp [0];
13043                                         iargs [1] = sp [1];
13044                                         iargs [2] = sp [2];
13045                                         if (ip [1] == CEE_CPBLK) {
13046                                                 /*
13047                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13048                                                  * and release barriers for cpblk. It is technically both a load and
13049                                                  * store operation, so it seems like that's the sensible thing to do.
13050                                                  *
13051                                                  * FIXME: We emit full barriers on both sides of the operation for
13052                                                  * simplicity. We should have a separate atomic memcpy method instead.
13053                                                  */
13054                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13055
13056                                                 if (ins_flag & MONO_INST_VOLATILE)
13057                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13058
13059                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13060                                                 call->flags |= ins_flag;
13061
13062                                                 if (ins_flag & MONO_INST_VOLATILE)
13063                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13064                                         } else {
13065                                                 MonoMethod *memset_method = get_memset_method ();
13066                                                 if (ins_flag & MONO_INST_VOLATILE) {
13067                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13068                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13069                                                 }
13070                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13071                                                 call->flags |= ins_flag;
13072                                         }
13073                                 }
13074                                 ip += 2;
13075                                 ins_flag = 0;
13076                                 inline_costs += 1;
13077                                 break;
13078                         }
13079                         case CEE_NO_:
13080                                 CHECK_OPSIZE (3);
13081                                 if (ip [2] & 0x1)
13082                                         ins_flag |= MONO_INST_NOTYPECHECK;
13083                                 if (ip [2] & 0x2)
13084                                         ins_flag |= MONO_INST_NORANGECHECK;
13085                                 /* we ignore the no-nullcheck for now since we
13086                                  * really do it explicitly only when doing callvirt->call
13087                                  */
13088                                 ip += 3;
13089                                 break;
13090                         case CEE_RETHROW: {
13091                                 MonoInst *load;
13092                                 int handler_offset = -1;
13093
13094                                 for (i = 0; i < header->num_clauses; ++i) {
13095                                         MonoExceptionClause *clause = &header->clauses [i];
13096                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13097                                                 handler_offset = clause->handler_offset;
13098                                                 break;
13099                                         }
13100                                 }
13101
13102                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13103
13104                                 if (handler_offset == -1)
13105                                         UNVERIFIED;
13106
13107                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13108                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13109                                 ins->sreg1 = load->dreg;
13110                                 MONO_ADD_INS (cfg->cbb, ins);
13111
13112                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13113                                 MONO_ADD_INS (cfg->cbb, ins);
13114
13115                                 sp = stack_start;
13116                                 link_bblock (cfg, cfg->cbb, end_bblock);
13117                                 start_new_bblock = 1;
13118                                 ip += 2;
13119                                 break;
13120                         }
13121                         case CEE_SIZEOF: {
13122                                 guint32 val;
13123                                 int ialign;
13124
13125                                 CHECK_STACK_OVF (1);
13126                                 CHECK_OPSIZE (6);
13127                                 token = read32 (ip + 2);
13128                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13129                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13130                                         CHECK_CFG_ERROR;
13131
13132                                         val = mono_type_size (type, &ialign);
13133                                 } else {
13134                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13135                                         CHECK_TYPELOAD (klass);
13136
13137                                         val = mono_type_size (&klass->byval_arg, &ialign);
13138
13139                                         if (mini_is_gsharedvt_klass (klass))
13140                                                 GSHAREDVT_FAILURE (*ip);
13141                                 }
13142                                 EMIT_NEW_ICONST (cfg, ins, val);
13143                                 *sp++= ins;
13144                                 ip += 6;
13145                                 break;
13146                         }
13147                         case CEE_REFANYTYPE: {
13148                                 MonoInst *src_var, *src;
13149
13150                                 GSHAREDVT_FAILURE (*ip);
13151
13152                                 CHECK_STACK (1);
13153                                 --sp;
13154
13155                                 // FIXME:
13156                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13157                                 if (!src_var)
13158                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13159                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13160                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13161                                 *sp++ = ins;
13162                                 ip += 2;
13163                                 break;
13164                         }
13165                         case CEE_READONLY_:
13166                                 readonly = TRUE;
13167                                 ip += 2;
13168                                 break;
13169
13170                         case CEE_UNUSED56:
13171                         case CEE_UNUSED57:
13172                         case CEE_UNUSED70:
13173                         case CEE_UNUSED:
13174                         case CEE_UNUSED99:
13175                                 UNVERIFIED;
13176
13177                         default:
13178                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13179                                 UNVERIFIED;
13180                         }
13181                         break;
13182                 }
13183                 case CEE_UNUSED58:
13184                 case CEE_UNUSED1:
13185                         UNVERIFIED;
13186
13187                 default:
13188                         g_warning ("opcode 0x%02x not handled", *ip);
13189                         UNVERIFIED;
13190                 }
13191         }
13192         if (start_new_bblock != 1)
13193                 UNVERIFIED;
13194
13195         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13196         if (cfg->cbb->next_bb) {
13197                 /* This could already be set because of inlining, #693905 */
13198                 MonoBasicBlock *bb = cfg->cbb;
13199
13200                 while (bb->next_bb)
13201                         bb = bb->next_bb;
13202                 bb->next_bb = end_bblock;
13203         } else {
13204                 cfg->cbb->next_bb = end_bblock;
13205         }
13206
13207         if (cfg->method == method && cfg->domainvar) {
13208                 MonoInst *store;
13209                 MonoInst *get_domain;
13210
13211                 cfg->cbb = init_localsbb;
13212
13213                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13214                         MONO_ADD_INS (cfg->cbb, get_domain);
13215                 } else {
13216                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13217                 }
13218                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13219                 MONO_ADD_INS (cfg->cbb, store);
13220         }
13221
13222 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13223         if (cfg->compile_aot)
13224                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13225                 mono_get_got_var (cfg);
13226 #endif
13227
13228         if (cfg->method == method && cfg->got_var)
13229                 mono_emit_load_got_addr (cfg);
13230
13231         if (init_localsbb) {
13232                 cfg->cbb = init_localsbb;
13233                 cfg->ip = NULL;
13234                 for (i = 0; i < header->num_locals; ++i) {
13235                         emit_init_local (cfg, i, header->locals [i], init_locals);
13236                 }
13237         }
13238
13239         if (cfg->init_ref_vars && cfg->method == method) {
13240                 /* Emit initialization for ref vars */
13241                 // FIXME: Avoid duplication initialization for IL locals.
13242                 for (i = 0; i < cfg->num_varinfo; ++i) {
13243                         MonoInst *ins = cfg->varinfo [i];
13244
13245                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13246                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13247                 }
13248         }
13249
13250         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13251                 cfg->cbb = init_localsbb;
13252                 emit_push_lmf (cfg);
13253         }
13254
13255         cfg->cbb = init_localsbb;
13256         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13257
13258         if (seq_points) {
13259                 MonoBasicBlock *bb;
13260
13261                 /*
13262                  * Make seq points at backward branch targets interruptable.
13263                  */
13264                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13265                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13266                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13267         }
13268
13269         /* Add a sequence point for method entry/exit events */
13270         if (seq_points && cfg->gen_sdb_seq_points) {
13271                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13272                 MONO_ADD_INS (init_localsbb, ins);
13273                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13274                 MONO_ADD_INS (cfg->bb_exit, ins);
13275         }
13276
13277         /*
13278          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13279          * the code they refer to was dead (#11880).
13280          */
13281         if (sym_seq_points) {
13282                 for (i = 0; i < header->code_size; ++i) {
13283                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13284                                 MonoInst *ins;
13285
13286                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13287                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13288                         }
13289                 }
13290         }
13291
13292         cfg->ip = NULL;
13293
13294         if (cfg->method == method) {
13295                 MonoBasicBlock *bb;
13296                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13297                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13298                         if (cfg->spvars)
13299                                 mono_create_spvar_for_region (cfg, bb->region);
13300                         if (cfg->verbose_level > 2)
13301                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13302                 }
13303         }
13304
13305         if (inline_costs < 0) {
13306                 char *mname;
13307
13308                 /* Method is too large */
13309                 mname = mono_method_full_name (method, TRUE);
13310                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
13311                 cfg->exception_message = g_strdup_printf ("Method %s is too complex.", mname);
13312                 g_free (mname);
13313         }
13314
13315         if ((cfg->verbose_level > 2) && (cfg->method == method))
13316                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13317
13318         goto cleanup;
13319
13320 mono_error_exit:
13321         g_assert (!mono_error_ok (&cfg->error));
13322         goto cleanup;
13323
13324  exception_exit:
13325         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13326         goto cleanup;
13327
13328  unverified:
13329         set_exception_type_from_invalid_il (cfg, method, ip);
13330         goto cleanup;
13331
13332  cleanup:
13333         g_slist_free (class_inits);
13334         mono_basic_block_free (original_bb);
13335         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13336         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13337         if (cfg->exception_type)
13338                 return -1;
13339         else
13340                 return inline_costs;
13341 }
13342
13343 static int
13344 store_membase_reg_to_store_membase_imm (int opcode)
13345 {
13346         switch (opcode) {
13347         case OP_STORE_MEMBASE_REG:
13348                 return OP_STORE_MEMBASE_IMM;
13349         case OP_STOREI1_MEMBASE_REG:
13350                 return OP_STOREI1_MEMBASE_IMM;
13351         case OP_STOREI2_MEMBASE_REG:
13352                 return OP_STOREI2_MEMBASE_IMM;
13353         case OP_STOREI4_MEMBASE_REG:
13354                 return OP_STOREI4_MEMBASE_IMM;
13355         case OP_STOREI8_MEMBASE_REG:
13356                 return OP_STOREI8_MEMBASE_IMM;
13357         default:
13358                 g_assert_not_reached ();
13359         }
13360
13361         return -1;
13362 }
13363
13364 int
13365 mono_op_to_op_imm (int opcode)
13366 {
13367         switch (opcode) {
13368         case OP_IADD:
13369                 return OP_IADD_IMM;
13370         case OP_ISUB:
13371                 return OP_ISUB_IMM;
13372         case OP_IDIV:
13373                 return OP_IDIV_IMM;
13374         case OP_IDIV_UN:
13375                 return OP_IDIV_UN_IMM;
13376         case OP_IREM:
13377                 return OP_IREM_IMM;
13378         case OP_IREM_UN:
13379                 return OP_IREM_UN_IMM;
13380         case OP_IMUL:
13381                 return OP_IMUL_IMM;
13382         case OP_IAND:
13383                 return OP_IAND_IMM;
13384         case OP_IOR:
13385                 return OP_IOR_IMM;
13386         case OP_IXOR:
13387                 return OP_IXOR_IMM;
13388         case OP_ISHL:
13389                 return OP_ISHL_IMM;
13390         case OP_ISHR:
13391                 return OP_ISHR_IMM;
13392         case OP_ISHR_UN:
13393                 return OP_ISHR_UN_IMM;
13394
13395         case OP_LADD:
13396                 return OP_LADD_IMM;
13397         case OP_LSUB:
13398                 return OP_LSUB_IMM;
13399         case OP_LAND:
13400                 return OP_LAND_IMM;
13401         case OP_LOR:
13402                 return OP_LOR_IMM;
13403         case OP_LXOR:
13404                 return OP_LXOR_IMM;
13405         case OP_LSHL:
13406                 return OP_LSHL_IMM;
13407         case OP_LSHR:
13408                 return OP_LSHR_IMM;
13409         case OP_LSHR_UN:
13410                 return OP_LSHR_UN_IMM;
13411 #if SIZEOF_REGISTER == 8
13412         case OP_LREM:
13413                 return OP_LREM_IMM;
13414 #endif
13415
13416         case OP_COMPARE:
13417                 return OP_COMPARE_IMM;
13418         case OP_ICOMPARE:
13419                 return OP_ICOMPARE_IMM;
13420         case OP_LCOMPARE:
13421                 return OP_LCOMPARE_IMM;
13422
13423         case OP_STORE_MEMBASE_REG:
13424                 return OP_STORE_MEMBASE_IMM;
13425         case OP_STOREI1_MEMBASE_REG:
13426                 return OP_STOREI1_MEMBASE_IMM;
13427         case OP_STOREI2_MEMBASE_REG:
13428                 return OP_STOREI2_MEMBASE_IMM;
13429         case OP_STOREI4_MEMBASE_REG:
13430                 return OP_STOREI4_MEMBASE_IMM;
13431
13432 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13433         case OP_X86_PUSH:
13434                 return OP_X86_PUSH_IMM;
13435         case OP_X86_COMPARE_MEMBASE_REG:
13436                 return OP_X86_COMPARE_MEMBASE_IMM;
13437 #endif
13438 #if defined(TARGET_AMD64)
13439         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13440                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13441 #endif
13442         case OP_VOIDCALL_REG:
13443                 return OP_VOIDCALL;
13444         case OP_CALL_REG:
13445                 return OP_CALL;
13446         case OP_LCALL_REG:
13447                 return OP_LCALL;
13448         case OP_FCALL_REG:
13449                 return OP_FCALL;
13450         case OP_LOCALLOC:
13451                 return OP_LOCALLOC_IMM;
13452         }
13453
13454         return -1;
13455 }
13456
13457 static int
13458 ldind_to_load_membase (int opcode)
13459 {
13460         switch (opcode) {
13461         case CEE_LDIND_I1:
13462                 return OP_LOADI1_MEMBASE;
13463         case CEE_LDIND_U1:
13464                 return OP_LOADU1_MEMBASE;
13465         case CEE_LDIND_I2:
13466                 return OP_LOADI2_MEMBASE;
13467         case CEE_LDIND_U2:
13468                 return OP_LOADU2_MEMBASE;
13469         case CEE_LDIND_I4:
13470                 return OP_LOADI4_MEMBASE;
13471         case CEE_LDIND_U4:
13472                 return OP_LOADU4_MEMBASE;
13473         case CEE_LDIND_I:
13474                 return OP_LOAD_MEMBASE;
13475         case CEE_LDIND_REF:
13476                 return OP_LOAD_MEMBASE;
13477         case CEE_LDIND_I8:
13478                 return OP_LOADI8_MEMBASE;
13479         case CEE_LDIND_R4:
13480                 return OP_LOADR4_MEMBASE;
13481         case CEE_LDIND_R8:
13482                 return OP_LOADR8_MEMBASE;
13483         default:
13484                 g_assert_not_reached ();
13485         }
13486
13487         return -1;
13488 }
13489
13490 static int
13491 stind_to_store_membase (int opcode)
13492 {
13493         switch (opcode) {
13494         case CEE_STIND_I1:
13495                 return OP_STOREI1_MEMBASE_REG;
13496         case CEE_STIND_I2:
13497                 return OP_STOREI2_MEMBASE_REG;
13498         case CEE_STIND_I4:
13499                 return OP_STOREI4_MEMBASE_REG;
13500         case CEE_STIND_I:
13501         case CEE_STIND_REF:
13502                 return OP_STORE_MEMBASE_REG;
13503         case CEE_STIND_I8:
13504                 return OP_STOREI8_MEMBASE_REG;
13505         case CEE_STIND_R4:
13506                 return OP_STORER4_MEMBASE_REG;
13507         case CEE_STIND_R8:
13508                 return OP_STORER8_MEMBASE_REG;
13509         default:
13510                 g_assert_not_reached ();
13511         }
13512
13513         return -1;
13514 }
13515
13516 int
13517 mono_load_membase_to_load_mem (int opcode)
13518 {
13519         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13520 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13521         switch (opcode) {
13522         case OP_LOAD_MEMBASE:
13523                 return OP_LOAD_MEM;
13524         case OP_LOADU1_MEMBASE:
13525                 return OP_LOADU1_MEM;
13526         case OP_LOADU2_MEMBASE:
13527                 return OP_LOADU2_MEM;
13528         case OP_LOADI4_MEMBASE:
13529                 return OP_LOADI4_MEM;
13530         case OP_LOADU4_MEMBASE:
13531                 return OP_LOADU4_MEM;
13532 #if SIZEOF_REGISTER == 8
13533         case OP_LOADI8_MEMBASE:
13534                 return OP_LOADI8_MEM;
13535 #endif
13536         }
13537 #endif
13538
13539         return -1;
13540 }
13541
13542 static inline int
13543 op_to_op_dest_membase (int store_opcode, int opcode)
13544 {
13545 #if defined(TARGET_X86)
13546         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13547                 return -1;
13548
13549         switch (opcode) {
13550         case OP_IADD:
13551                 return OP_X86_ADD_MEMBASE_REG;
13552         case OP_ISUB:
13553                 return OP_X86_SUB_MEMBASE_REG;
13554         case OP_IAND:
13555                 return OP_X86_AND_MEMBASE_REG;
13556         case OP_IOR:
13557                 return OP_X86_OR_MEMBASE_REG;
13558         case OP_IXOR:
13559                 return OP_X86_XOR_MEMBASE_REG;
13560         case OP_ADD_IMM:
13561         case OP_IADD_IMM:
13562                 return OP_X86_ADD_MEMBASE_IMM;
13563         case OP_SUB_IMM:
13564         case OP_ISUB_IMM:
13565                 return OP_X86_SUB_MEMBASE_IMM;
13566         case OP_AND_IMM:
13567         case OP_IAND_IMM:
13568                 return OP_X86_AND_MEMBASE_IMM;
13569         case OP_OR_IMM:
13570         case OP_IOR_IMM:
13571                 return OP_X86_OR_MEMBASE_IMM;
13572         case OP_XOR_IMM:
13573         case OP_IXOR_IMM:
13574                 return OP_X86_XOR_MEMBASE_IMM;
13575         case OP_MOVE:
13576                 return OP_NOP;
13577         }
13578 #endif
13579
13580 #if defined(TARGET_AMD64)
13581         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13582                 return -1;
13583
13584         switch (opcode) {
13585         case OP_IADD:
13586                 return OP_X86_ADD_MEMBASE_REG;
13587         case OP_ISUB:
13588                 return OP_X86_SUB_MEMBASE_REG;
13589         case OP_IAND:
13590                 return OP_X86_AND_MEMBASE_REG;
13591         case OP_IOR:
13592                 return OP_X86_OR_MEMBASE_REG;
13593         case OP_IXOR:
13594                 return OP_X86_XOR_MEMBASE_REG;
13595         case OP_IADD_IMM:
13596                 return OP_X86_ADD_MEMBASE_IMM;
13597         case OP_ISUB_IMM:
13598                 return OP_X86_SUB_MEMBASE_IMM;
13599         case OP_IAND_IMM:
13600                 return OP_X86_AND_MEMBASE_IMM;
13601         case OP_IOR_IMM:
13602                 return OP_X86_OR_MEMBASE_IMM;
13603         case OP_IXOR_IMM:
13604                 return OP_X86_XOR_MEMBASE_IMM;
13605         case OP_LADD:
13606                 return OP_AMD64_ADD_MEMBASE_REG;
13607         case OP_LSUB:
13608                 return OP_AMD64_SUB_MEMBASE_REG;
13609         case OP_LAND:
13610                 return OP_AMD64_AND_MEMBASE_REG;
13611         case OP_LOR:
13612                 return OP_AMD64_OR_MEMBASE_REG;
13613         case OP_LXOR:
13614                 return OP_AMD64_XOR_MEMBASE_REG;
13615         case OP_ADD_IMM:
13616         case OP_LADD_IMM:
13617                 return OP_AMD64_ADD_MEMBASE_IMM;
13618         case OP_SUB_IMM:
13619         case OP_LSUB_IMM:
13620                 return OP_AMD64_SUB_MEMBASE_IMM;
13621         case OP_AND_IMM:
13622         case OP_LAND_IMM:
13623                 return OP_AMD64_AND_MEMBASE_IMM;
13624         case OP_OR_IMM:
13625         case OP_LOR_IMM:
13626                 return OP_AMD64_OR_MEMBASE_IMM;
13627         case OP_XOR_IMM:
13628         case OP_LXOR_IMM:
13629                 return OP_AMD64_XOR_MEMBASE_IMM;
13630         case OP_MOVE:
13631                 return OP_NOP;
13632         }
13633 #endif
13634
13635         return -1;
13636 }
13637
13638 static inline int
13639 op_to_op_store_membase (int store_opcode, int opcode)
13640 {
13641 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13642         switch (opcode) {
13643         case OP_ICEQ:
13644                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13645                         return OP_X86_SETEQ_MEMBASE;
13646         case OP_CNE:
13647                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13648                         return OP_X86_SETNE_MEMBASE;
13649         }
13650 #endif
13651
13652         return -1;
13653 }
13654
13655 static inline int
13656 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13657 {
13658 #ifdef TARGET_X86
13659         /* FIXME: This has sign extension issues */
13660         /*
13661         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13662                 return OP_X86_COMPARE_MEMBASE8_IMM;
13663         */
13664
13665         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13666                 return -1;
13667
13668         switch (opcode) {
13669         case OP_X86_PUSH:
13670                 return OP_X86_PUSH_MEMBASE;
13671         case OP_COMPARE_IMM:
13672         case OP_ICOMPARE_IMM:
13673                 return OP_X86_COMPARE_MEMBASE_IMM;
13674         case OP_COMPARE:
13675         case OP_ICOMPARE:
13676                 return OP_X86_COMPARE_MEMBASE_REG;
13677         }
13678 #endif
13679
13680 #ifdef TARGET_AMD64
13681         /* FIXME: This has sign extension issues */
13682         /*
13683         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13684                 return OP_X86_COMPARE_MEMBASE8_IMM;
13685         */
13686
13687         switch (opcode) {
13688         case OP_X86_PUSH:
13689                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13690                         return OP_X86_PUSH_MEMBASE;
13691                 break;
13692                 /* FIXME: This only works for 32 bit immediates
13693         case OP_COMPARE_IMM:
13694         case OP_LCOMPARE_IMM:
13695                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13696                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13697                 */
13698         case OP_ICOMPARE_IMM:
13699                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13700                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13701                 break;
13702         case OP_COMPARE:
13703         case OP_LCOMPARE:
13704                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13705                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13706                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13707                         return OP_AMD64_COMPARE_MEMBASE_REG;
13708                 break;
13709         case OP_ICOMPARE:
13710                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13711                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13712                 break;
13713         }
13714 #endif
13715
13716         return -1;
13717 }
13718
13719 static inline int
13720 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13721 {
13722 #ifdef TARGET_X86
13723         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13724                 return -1;
13725
13726         switch (opcode) {
13727         case OP_COMPARE:
13728         case OP_ICOMPARE:
13729                 return OP_X86_COMPARE_REG_MEMBASE;
13730         case OP_IADD:
13731                 return OP_X86_ADD_REG_MEMBASE;
13732         case OP_ISUB:
13733                 return OP_X86_SUB_REG_MEMBASE;
13734         case OP_IAND:
13735                 return OP_X86_AND_REG_MEMBASE;
13736         case OP_IOR:
13737                 return OP_X86_OR_REG_MEMBASE;
13738         case OP_IXOR:
13739                 return OP_X86_XOR_REG_MEMBASE;
13740         }
13741 #endif
13742
13743 #ifdef TARGET_AMD64
13744         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13745                 switch (opcode) {
13746                 case OP_ICOMPARE:
13747                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13748                 case OP_IADD:
13749                         return OP_X86_ADD_REG_MEMBASE;
13750                 case OP_ISUB:
13751                         return OP_X86_SUB_REG_MEMBASE;
13752                 case OP_IAND:
13753                         return OP_X86_AND_REG_MEMBASE;
13754                 case OP_IOR:
13755                         return OP_X86_OR_REG_MEMBASE;
13756                 case OP_IXOR:
13757                         return OP_X86_XOR_REG_MEMBASE;
13758                 }
13759         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13760                 switch (opcode) {
13761                 case OP_COMPARE:
13762                 case OP_LCOMPARE:
13763                         return OP_AMD64_COMPARE_REG_MEMBASE;
13764                 case OP_LADD:
13765                         return OP_AMD64_ADD_REG_MEMBASE;
13766                 case OP_LSUB:
13767                         return OP_AMD64_SUB_REG_MEMBASE;
13768                 case OP_LAND:
13769                         return OP_AMD64_AND_REG_MEMBASE;
13770                 case OP_LOR:
13771                         return OP_AMD64_OR_REG_MEMBASE;
13772                 case OP_LXOR:
13773                         return OP_AMD64_XOR_REG_MEMBASE;
13774                 }
13775         }
13776 #endif
13777
13778         return -1;
13779 }
13780
13781 int
13782 mono_op_to_op_imm_noemul (int opcode)
13783 {
13784         switch (opcode) {
13785 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13786         case OP_LSHR:
13787         case OP_LSHL:
13788         case OP_LSHR_UN:
13789                 return -1;
13790 #endif
13791 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13792         case OP_IDIV:
13793         case OP_IDIV_UN:
13794         case OP_IREM:
13795         case OP_IREM_UN:
13796                 return -1;
13797 #endif
13798 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13799         case OP_IMUL:
13800                 return -1;
13801 #endif
13802         default:
13803                 return mono_op_to_op_imm (opcode);
13804         }
13805 }
13806
13807 /**
13808  * mono_handle_global_vregs:
13809  *
13810  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13811  * for them.
13812  */
13813 void
13814 mono_handle_global_vregs (MonoCompile *cfg)
13815 {
13816         gint32 *vreg_to_bb;
13817         MonoBasicBlock *bb;
13818         int i, pos;
13819
13820         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13821
13822 #ifdef MONO_ARCH_SIMD_INTRINSICS
13823         if (cfg->uses_simd_intrinsics)
13824                 mono_simd_simplify_indirection (cfg);
13825 #endif
13826
13827         /* Find local vregs used in more than one bb */
13828         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13829                 MonoInst *ins = bb->code;
13830                 int block_num = bb->block_num;
13831
13832                 if (cfg->verbose_level > 2)
13833                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13834
13835                 cfg->cbb = bb;
13836                 for (; ins; ins = ins->next) {
13837                         const char *spec = INS_INFO (ins->opcode);
13838                         int regtype = 0, regindex;
13839                         gint32 prev_bb;
13840
13841                         if (G_UNLIKELY (cfg->verbose_level > 2))
13842                                 mono_print_ins (ins);
13843
13844                         g_assert (ins->opcode >= MONO_CEE_LAST);
13845
13846                         for (regindex = 0; regindex < 4; regindex ++) {
13847                                 int vreg = 0;
13848
13849                                 if (regindex == 0) {
13850                                         regtype = spec [MONO_INST_DEST];
13851                                         if (regtype == ' ')
13852                                                 continue;
13853                                         vreg = ins->dreg;
13854                                 } else if (regindex == 1) {
13855                                         regtype = spec [MONO_INST_SRC1];
13856                                         if (regtype == ' ')
13857                                                 continue;
13858                                         vreg = ins->sreg1;
13859                                 } else if (regindex == 2) {
13860                                         regtype = spec [MONO_INST_SRC2];
13861                                         if (regtype == ' ')
13862                                                 continue;
13863                                         vreg = ins->sreg2;
13864                                 } else if (regindex == 3) {
13865                                         regtype = spec [MONO_INST_SRC3];
13866                                         if (regtype == ' ')
13867                                                 continue;
13868                                         vreg = ins->sreg3;
13869                                 }
13870
13871 #if SIZEOF_REGISTER == 4
13872                                 /* In the LLVM case, the long opcodes are not decomposed */
13873                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13874                                         /*
13875                                          * Since some instructions reference the original long vreg,
13876                                          * and some reference the two component vregs, it is quite hard
13877                                          * to determine when it needs to be global. So be conservative.
13878                                          */
13879                                         if (!get_vreg_to_inst (cfg, vreg)) {
13880                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13881
13882                                                 if (cfg->verbose_level > 2)
13883                                                         printf ("LONG VREG R%d made global.\n", vreg);
13884                                         }
13885
13886                                         /*
13887                                          * Make the component vregs volatile since the optimizations can
13888                                          * get confused otherwise.
13889                                          */
13890                                         get_vreg_to_inst (cfg, vreg + 1)->flags |= MONO_INST_VOLATILE;
13891                                         get_vreg_to_inst (cfg, vreg + 2)->flags |= MONO_INST_VOLATILE;
13892                                 }
13893 #endif
13894
13895                                 g_assert (vreg != -1);
13896
13897                                 prev_bb = vreg_to_bb [vreg];
13898                                 if (prev_bb == 0) {
13899                                         /* 0 is a valid block num */
13900                                         vreg_to_bb [vreg] = block_num + 1;
13901                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13902                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13903                                                 continue;
13904
13905                                         if (!get_vreg_to_inst (cfg, vreg)) {
13906                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13907                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13908
13909                                                 switch (regtype) {
13910                                                 case 'i':
13911                                                         if (vreg_is_ref (cfg, vreg))
13912                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13913                                                         else
13914                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13915                                                         break;
13916                                                 case 'l':
13917                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13918                                                         break;
13919                                                 case 'f':
13920                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13921                                                         break;
13922                                                 case 'v':
13923                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13924                                                         break;
13925                                                 default:
13926                                                         g_assert_not_reached ();
13927                                                 }
13928                                         }
13929
13930                                         /* Flag as having been used in more than one bb */
13931                                         vreg_to_bb [vreg] = -1;
13932                                 }
13933                         }
13934                 }
13935         }
13936
13937         /* If a variable is used in only one bblock, convert it into a local vreg */
13938         for (i = 0; i < cfg->num_varinfo; i++) {
13939                 MonoInst *var = cfg->varinfo [i];
13940                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13941
13942                 switch (var->type) {
13943                 case STACK_I4:
13944                 case STACK_OBJ:
13945                 case STACK_PTR:
13946                 case STACK_MP:
13947                 case STACK_VTYPE:
13948 #if SIZEOF_REGISTER == 8
13949                 case STACK_I8:
13950 #endif
13951 #if !defined(TARGET_X86)
13952                 /* Enabling this screws up the fp stack on x86 */
13953                 case STACK_R8:
13954 #endif
13955                         if (mono_arch_is_soft_float ())
13956                                 break;
13957
13958                         /*
13959                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13960                                 break;
13961                         */
13962
13963                         /* Arguments are implicitly global */
13964                         /* Putting R4 vars into registers doesn't work currently */
13965                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13966                         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) {
13967                                 /*
13968                                  * Make that the variable's liveness interval doesn't contain a call, since
13969                                  * that would cause the lvreg to be spilled, making the whole optimization
13970                                  * useless.
13971                                  */
13972                                 /* This is too slow for JIT compilation */
13973 #if 0
13974                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13975                                         MonoInst *ins;
13976                                         int def_index, call_index, ins_index;
13977                                         gboolean spilled = FALSE;
13978
13979                                         def_index = -1;
13980                                         call_index = -1;
13981                                         ins_index = 0;
13982                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13983                                                 const char *spec = INS_INFO (ins->opcode);
13984
13985                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13986                                                         def_index = ins_index;
13987
13988                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13989                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13990                                                         if (call_index > def_index) {
13991                                                                 spilled = TRUE;
13992                                                                 break;
13993                                                         }
13994                                                 }
13995
13996                                                 if (MONO_IS_CALL (ins))
13997                                                         call_index = ins_index;
13998
13999                                                 ins_index ++;
14000                                         }
14001
14002                                         if (spilled)
14003                                                 break;
14004                                 }
14005 #endif
14006
14007                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14008                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14009                                 var->flags |= MONO_INST_IS_DEAD;
14010                                 cfg->vreg_to_inst [var->dreg] = NULL;
14011                         }
14012                         break;
14013                 }
14014         }
14015
14016         /*
14017          * Compress the varinfo and vars tables so the liveness computation is faster and
14018          * takes up less space.
14019          */
14020         pos = 0;
14021         for (i = 0; i < cfg->num_varinfo; ++i) {
14022                 MonoInst *var = cfg->varinfo [i];
14023                 if (pos < i && cfg->locals_start == i)
14024                         cfg->locals_start = pos;
14025                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14026                         if (pos < i) {
14027                                 cfg->varinfo [pos] = cfg->varinfo [i];
14028                                 cfg->varinfo [pos]->inst_c0 = pos;
14029                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14030                                 cfg->vars [pos].idx = pos;
14031 #if SIZEOF_REGISTER == 4
14032                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14033                                         /* Modify the two component vars too */
14034                                         MonoInst *var1;
14035
14036                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 1);
14037                                         var1->inst_c0 = pos;
14038                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 2);
14039                                         var1->inst_c0 = pos;
14040                                 }
14041 #endif
14042                         }
14043                         pos ++;
14044                 }
14045         }
14046         cfg->num_varinfo = pos;
14047         if (cfg->locals_start > cfg->num_varinfo)
14048                 cfg->locals_start = cfg->num_varinfo;
14049 }
14050
14051 /*
14052  * mono_allocate_gsharedvt_vars:
14053  *
14054  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14055  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14056  */
14057 void
14058 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14059 {
14060         int i;
14061
14062         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14063
14064         for (i = 0; i < cfg->num_varinfo; ++i) {
14065                 MonoInst *ins = cfg->varinfo [i];
14066                 int idx;
14067
14068                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14069                         if (i >= cfg->locals_start) {
14070                                 /* Local */
14071                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14072                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14073                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14074                                 ins->inst_imm = idx;
14075                         } else {
14076                                 /* Arg */
14077                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14078                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14079                         }
14080                 }
14081         }
14082 }
14083
14084 /**
14085  * mono_spill_global_vars:
14086  *
14087  *   Generate spill code for variables which are not allocated to registers,
14088  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14089  * code is generated which could be optimized by the local optimization passes.
14090  */
14091 void
14092 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14093 {
14094         MonoBasicBlock *bb;
14095         char spec2 [16];
14096         int orig_next_vreg;
14097         guint32 *vreg_to_lvreg;
14098         guint32 *lvregs;
14099         guint32 i, lvregs_len;
14100         gboolean dest_has_lvreg = FALSE;
14101         MonoStackType stacktypes [128];
14102         MonoInst **live_range_start, **live_range_end;
14103         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14104
14105         *need_local_opts = FALSE;
14106
14107         memset (spec2, 0, sizeof (spec2));
14108
14109         /* FIXME: Move this function to mini.c */
14110         stacktypes ['i'] = STACK_PTR;
14111         stacktypes ['l'] = STACK_I8;
14112         stacktypes ['f'] = STACK_R8;
14113 #ifdef MONO_ARCH_SIMD_INTRINSICS
14114         stacktypes ['x'] = STACK_VTYPE;
14115 #endif
14116
14117 #if SIZEOF_REGISTER == 4
14118         /* Create MonoInsts for longs */
14119         for (i = 0; i < cfg->num_varinfo; i++) {
14120                 MonoInst *ins = cfg->varinfo [i];
14121
14122                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14123                         switch (ins->type) {
14124                         case STACK_R8:
14125                         case STACK_I8: {
14126                                 MonoInst *tree;
14127
14128                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14129                                         break;
14130
14131                                 g_assert (ins->opcode == OP_REGOFFSET);
14132
14133                                 tree = get_vreg_to_inst (cfg, ins->dreg + 1);
14134                                 g_assert (tree);
14135                                 tree->opcode = OP_REGOFFSET;
14136                                 tree->inst_basereg = ins->inst_basereg;
14137                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14138
14139                                 tree = get_vreg_to_inst (cfg, ins->dreg + 2);
14140                                 g_assert (tree);
14141                                 tree->opcode = OP_REGOFFSET;
14142                                 tree->inst_basereg = ins->inst_basereg;
14143                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14144                                 break;
14145                         }
14146                         default:
14147                                 break;
14148                         }
14149                 }
14150         }
14151 #endif
14152
14153         if (cfg->compute_gc_maps) {
14154                 /* registers need liveness info even for !non refs */
14155                 for (i = 0; i < cfg->num_varinfo; i++) {
14156                         MonoInst *ins = cfg->varinfo [i];
14157
14158                         if (ins->opcode == OP_REGVAR)
14159                                 ins->flags |= MONO_INST_GC_TRACK;
14160                 }
14161         }
14162
14163         /* FIXME: widening and truncation */
14164
14165         /*
14166          * As an optimization, when a variable allocated to the stack is first loaded into
14167          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14168          * the variable again.
14169          */
14170         orig_next_vreg = cfg->next_vreg;
14171         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14172         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14173         lvregs_len = 0;
14174
14175         /*
14176          * These arrays contain the first and last instructions accessing a given
14177          * variable.
14178          * Since we emit bblocks in the same order we process them here, and we
14179          * don't split live ranges, these will precisely describe the live range of
14180          * the variable, i.e. the instruction range where a valid value can be found
14181          * in the variables location.
14182          * The live range is computed using the liveness info computed by the liveness pass.
14183          * We can't use vmv->range, since that is an abstract live range, and we need
14184          * one which is instruction precise.
14185          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14186          */
14187         /* FIXME: Only do this if debugging info is requested */
14188         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14189         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14190         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14191         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14192
14193         /* Add spill loads/stores */
14194         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14195                 MonoInst *ins;
14196
14197                 if (cfg->verbose_level > 2)
14198                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14199
14200                 /* Clear vreg_to_lvreg array */
14201                 for (i = 0; i < lvregs_len; i++)
14202                         vreg_to_lvreg [lvregs [i]] = 0;
14203                 lvregs_len = 0;
14204
14205                 cfg->cbb = bb;
14206                 MONO_BB_FOR_EACH_INS (bb, ins) {
14207                         const char *spec = INS_INFO (ins->opcode);
14208                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14209                         gboolean store, no_lvreg;
14210                         int sregs [MONO_MAX_SRC_REGS];
14211
14212                         if (G_UNLIKELY (cfg->verbose_level > 2))
14213                                 mono_print_ins (ins);
14214
14215                         if (ins->opcode == OP_NOP)
14216                                 continue;
14217
14218                         /*
14219                          * We handle LDADDR here as well, since it can only be decomposed
14220                          * when variable addresses are known.
14221                          */
14222                         if (ins->opcode == OP_LDADDR) {
14223                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14224
14225                                 if (var->opcode == OP_VTARG_ADDR) {
14226                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14227                                         MonoInst *vtaddr = var->inst_left;
14228                                         if (vtaddr->opcode == OP_REGVAR) {
14229                                                 ins->opcode = OP_MOVE;
14230                                                 ins->sreg1 = vtaddr->dreg;
14231                                         }
14232                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14233                                                 ins->opcode = OP_LOAD_MEMBASE;
14234                                                 ins->inst_basereg = vtaddr->inst_basereg;
14235                                                 ins->inst_offset = vtaddr->inst_offset;
14236                                         } else
14237                                                 NOT_IMPLEMENTED;
14238                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14239                                         /* gsharedvt arg passed by ref */
14240                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14241
14242                                         ins->opcode = OP_LOAD_MEMBASE;
14243                                         ins->inst_basereg = var->inst_basereg;
14244                                         ins->inst_offset = var->inst_offset;
14245                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14246                                         MonoInst *load, *load2, *load3;
14247                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14248                                         int reg1, reg2, reg3;
14249                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14250                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14251
14252                                         /*
14253                                          * gsharedvt local.
14254                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14255                                          */
14256
14257                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14258
14259                                         g_assert (info_var);
14260                                         g_assert (locals_var);
14261
14262                                         /* Mark the instruction used to compute the locals var as used */
14263                                         cfg->gsharedvt_locals_var_ins = NULL;
14264
14265                                         /* Load the offset */
14266                                         if (info_var->opcode == OP_REGOFFSET) {
14267                                                 reg1 = alloc_ireg (cfg);
14268                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14269                                         } else if (info_var->opcode == OP_REGVAR) {
14270                                                 load = NULL;
14271                                                 reg1 = info_var->dreg;
14272                                         } else {
14273                                                 g_assert_not_reached ();
14274                                         }
14275                                         reg2 = alloc_ireg (cfg);
14276                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14277                                         /* Load the locals area address */
14278                                         reg3 = alloc_ireg (cfg);
14279                                         if (locals_var->opcode == OP_REGOFFSET) {
14280                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14281                                         } else if (locals_var->opcode == OP_REGVAR) {
14282                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14283                                         } else {
14284                                                 g_assert_not_reached ();
14285                                         }
14286                                         /* Compute the address */
14287                                         ins->opcode = OP_PADD;
14288                                         ins->sreg1 = reg3;
14289                                         ins->sreg2 = reg2;
14290
14291                                         mono_bblock_insert_before_ins (bb, ins, load3);
14292                                         mono_bblock_insert_before_ins (bb, load3, load2);
14293                                         if (load)
14294                                                 mono_bblock_insert_before_ins (bb, load2, load);
14295                                 } else {
14296                                         g_assert (var->opcode == OP_REGOFFSET);
14297
14298                                         ins->opcode = OP_ADD_IMM;
14299                                         ins->sreg1 = var->inst_basereg;
14300                                         ins->inst_imm = var->inst_offset;
14301                                 }
14302
14303                                 *need_local_opts = TRUE;
14304                                 spec = INS_INFO (ins->opcode);
14305                         }
14306
14307                         if (ins->opcode < MONO_CEE_LAST) {
14308                                 mono_print_ins (ins);
14309                                 g_assert_not_reached ();
14310                         }
14311
14312                         /*
14313                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14314                          * src register.
14315                          * FIXME:
14316                          */
14317                         if (MONO_IS_STORE_MEMBASE (ins)) {
14318                                 tmp_reg = ins->dreg;
14319                                 ins->dreg = ins->sreg2;
14320                                 ins->sreg2 = tmp_reg;
14321                                 store = TRUE;
14322
14323                                 spec2 [MONO_INST_DEST] = ' ';
14324                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14325                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14326                                 spec2 [MONO_INST_SRC3] = ' ';
14327                                 spec = spec2;
14328                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14329                                 g_assert_not_reached ();
14330                         else
14331                                 store = FALSE;
14332                         no_lvreg = FALSE;
14333
14334                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14335                                 printf ("\t %.3s %d", spec, ins->dreg);
14336                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14337                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14338                                         printf (" %d", sregs [srcindex]);
14339                                 printf ("\n");
14340                         }
14341
14342                         /***************/
14343                         /*    DREG     */
14344                         /***************/
14345                         regtype = spec [MONO_INST_DEST];
14346                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14347                         prev_dreg = -1;
14348
14349                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14350                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14351                                 MonoInst *store_ins;
14352                                 int store_opcode;
14353                                 MonoInst *def_ins = ins;
14354                                 int dreg = ins->dreg; /* The original vreg */
14355
14356                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14357
14358                                 if (var->opcode == OP_REGVAR) {
14359                                         ins->dreg = var->dreg;
14360                                 } 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)) {
14361                                         /*
14362                                          * Instead of emitting a load+store, use a _membase opcode.
14363                                          */
14364                                         g_assert (var->opcode == OP_REGOFFSET);
14365                                         if (ins->opcode == OP_MOVE) {
14366                                                 NULLIFY_INS (ins);
14367                                                 def_ins = NULL;
14368                                         } else {
14369                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14370                                                 ins->inst_basereg = var->inst_basereg;
14371                                                 ins->inst_offset = var->inst_offset;
14372                                                 ins->dreg = -1;
14373                                         }
14374                                         spec = INS_INFO (ins->opcode);
14375                                 } else {
14376                                         guint32 lvreg;
14377
14378                                         g_assert (var->opcode == OP_REGOFFSET);
14379
14380                                         prev_dreg = ins->dreg;
14381
14382                                         /* Invalidate any previous lvreg for this vreg */
14383                                         vreg_to_lvreg [ins->dreg] = 0;
14384
14385                                         lvreg = 0;
14386
14387                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14388                                                 regtype = 'l';
14389                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14390                                         }
14391
14392                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14393
14394 #if SIZEOF_REGISTER != 8
14395                                         if (regtype == 'l') {
14396                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
14397                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14398                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
14399                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14400                                                 def_ins = store_ins;
14401                                         }
14402                                         else
14403 #endif
14404                                         {
14405                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14406
14407                                                 /* Try to fuse the store into the instruction itself */
14408                                                 /* FIXME: Add more instructions */
14409                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14410                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14411                                                         ins->inst_imm = ins->inst_c0;
14412                                                         ins->inst_destbasereg = var->inst_basereg;
14413                                                         ins->inst_offset = var->inst_offset;
14414                                                         spec = INS_INFO (ins->opcode);
14415                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14416                                                         ins->opcode = store_opcode;
14417                                                         ins->inst_destbasereg = var->inst_basereg;
14418                                                         ins->inst_offset = var->inst_offset;
14419
14420                                                         no_lvreg = TRUE;
14421
14422                                                         tmp_reg = ins->dreg;
14423                                                         ins->dreg = ins->sreg2;
14424                                                         ins->sreg2 = tmp_reg;
14425                                                         store = TRUE;
14426
14427                                                         spec2 [MONO_INST_DEST] = ' ';
14428                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14429                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14430                                                         spec2 [MONO_INST_SRC3] = ' ';
14431                                                         spec = spec2;
14432                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14433                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14434                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14435                                                         ins->dreg = -1;
14436                                                         ins->inst_basereg = var->inst_basereg;
14437                                                         ins->inst_offset = var->inst_offset;
14438                                                         spec = INS_INFO (ins->opcode);
14439                                                 } else {
14440                                                         /* printf ("INS: "); mono_print_ins (ins); */
14441                                                         /* Create a store instruction */
14442                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14443
14444                                                         /* Insert it after the instruction */
14445                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14446
14447                                                         def_ins = store_ins;
14448
14449                                                         /*
14450                                                          * We can't assign ins->dreg to var->dreg here, since the
14451                                                          * sregs could use it. So set a flag, and do it after
14452                                                          * the sregs.
14453                                                          */
14454                                                         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)))
14455                                                                 dest_has_lvreg = TRUE;
14456                                                 }
14457                                         }
14458                                 }
14459
14460                                 if (def_ins && !live_range_start [dreg]) {
14461                                         live_range_start [dreg] = def_ins;
14462                                         live_range_start_bb [dreg] = bb;
14463                                 }
14464
14465                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14466                                         MonoInst *tmp;
14467
14468                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14469                                         tmp->inst_c1 = dreg;
14470                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14471                                 }
14472                         }
14473
14474                         /************/
14475                         /*  SREGS   */
14476                         /************/
14477                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14478                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14479                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14480                                 sreg = sregs [srcindex];
14481
14482                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14483                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14484                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14485                                         MonoInst *use_ins = ins;
14486                                         MonoInst *load_ins;
14487                                         guint32 load_opcode;
14488
14489                                         if (var->opcode == OP_REGVAR) {
14490                                                 sregs [srcindex] = var->dreg;
14491                                                 //mono_inst_set_src_registers (ins, sregs);
14492                                                 live_range_end [sreg] = use_ins;
14493                                                 live_range_end_bb [sreg] = bb;
14494
14495                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14496                                                         MonoInst *tmp;
14497
14498                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14499                                                         /* var->dreg is a hreg */
14500                                                         tmp->inst_c1 = sreg;
14501                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14502                                                 }
14503
14504                                                 continue;
14505                                         }
14506
14507                                         g_assert (var->opcode == OP_REGOFFSET);
14508
14509                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14510
14511                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14512
14513                                         if (vreg_to_lvreg [sreg]) {
14514                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14515
14516                                                 /* The variable is already loaded to an lvreg */
14517                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14518                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14519                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14520                                                 //mono_inst_set_src_registers (ins, sregs);
14521                                                 continue;
14522                                         }
14523
14524                                         /* Try to fuse the load into the instruction */
14525                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14526                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14527                                                 sregs [0] = var->inst_basereg;
14528                                                 //mono_inst_set_src_registers (ins, sregs);
14529                                                 ins->inst_offset = var->inst_offset;
14530                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14531                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14532                                                 sregs [1] = var->inst_basereg;
14533                                                 //mono_inst_set_src_registers (ins, sregs);
14534                                                 ins->inst_offset = var->inst_offset;
14535                                         } else {
14536                                                 if (MONO_IS_REAL_MOVE (ins)) {
14537                                                         ins->opcode = OP_NOP;
14538                                                         sreg = ins->dreg;
14539                                                 } else {
14540                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14541
14542                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14543
14544                                                         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) {
14545                                                                 if (var->dreg == prev_dreg) {
14546                                                                         /*
14547                                                                          * sreg refers to the value loaded by the load
14548                                                                          * emitted below, but we need to use ins->dreg
14549                                                                          * since it refers to the store emitted earlier.
14550                                                                          */
14551                                                                         sreg = ins->dreg;
14552                                                                 }
14553                                                                 g_assert (sreg != -1);
14554                                                                 vreg_to_lvreg [var->dreg] = sreg;
14555                                                                 g_assert (lvregs_len < 1024);
14556                                                                 lvregs [lvregs_len ++] = var->dreg;
14557                                                         }
14558                                                 }
14559
14560                                                 sregs [srcindex] = sreg;
14561                                                 //mono_inst_set_src_registers (ins, sregs);
14562
14563 #if SIZEOF_REGISTER != 8
14564                                                 if (regtype == 'l') {
14565                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14566                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14567                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14568                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14569                                                         use_ins = load_ins;
14570                                                 }
14571                                                 else
14572 #endif
14573                                                 {
14574 #if SIZEOF_REGISTER == 4
14575                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14576 #endif
14577                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14578                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14579                                                         use_ins = load_ins;
14580                                                 }
14581                                         }
14582
14583                                         if (var->dreg < orig_next_vreg) {
14584                                                 live_range_end [var->dreg] = use_ins;
14585                                                 live_range_end_bb [var->dreg] = bb;
14586                                         }
14587
14588                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14589                                                 MonoInst *tmp;
14590
14591                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14592                                                 tmp->inst_c1 = var->dreg;
14593                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14594                                         }
14595                                 }
14596                         }
14597                         mono_inst_set_src_registers (ins, sregs);
14598
14599                         if (dest_has_lvreg) {
14600                                 g_assert (ins->dreg != -1);
14601                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14602                                 g_assert (lvregs_len < 1024);
14603                                 lvregs [lvregs_len ++] = prev_dreg;
14604                                 dest_has_lvreg = FALSE;
14605                         }
14606
14607                         if (store) {
14608                                 tmp_reg = ins->dreg;
14609                                 ins->dreg = ins->sreg2;
14610                                 ins->sreg2 = tmp_reg;
14611                         }
14612
14613                         if (MONO_IS_CALL (ins)) {
14614                                 /* Clear vreg_to_lvreg array */
14615                                 for (i = 0; i < lvregs_len; i++)
14616                                         vreg_to_lvreg [lvregs [i]] = 0;
14617                                 lvregs_len = 0;
14618                         } else if (ins->opcode == OP_NOP) {
14619                                 ins->dreg = -1;
14620                                 MONO_INST_NULLIFY_SREGS (ins);
14621                         }
14622
14623                         if (cfg->verbose_level > 2)
14624                                 mono_print_ins_index (1, ins);
14625                 }
14626
14627                 /* Extend the live range based on the liveness info */
14628                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14629                         for (i = 0; i < cfg->num_varinfo; i ++) {
14630                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14631
14632                                 if (vreg_is_volatile (cfg, vi->vreg))
14633                                         /* The liveness info is incomplete */
14634                                         continue;
14635
14636                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14637                                         /* Live from at least the first ins of this bb */
14638                                         live_range_start [vi->vreg] = bb->code;
14639                                         live_range_start_bb [vi->vreg] = bb;
14640                                 }
14641
14642                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14643                                         /* Live at least until the last ins of this bb */
14644                                         live_range_end [vi->vreg] = bb->last_ins;
14645                                         live_range_end_bb [vi->vreg] = bb;
14646                                 }
14647                         }
14648                 }
14649         }
14650
14651         /*
14652          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14653          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14654          */
14655         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14656                 for (i = 0; i < cfg->num_varinfo; ++i) {
14657                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14658                         MonoInst *ins;
14659
14660                         if (live_range_start [vreg]) {
14661                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14662                                 ins->inst_c0 = i;
14663                                 ins->inst_c1 = vreg;
14664                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14665                         }
14666                         if (live_range_end [vreg]) {
14667                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14668                                 ins->inst_c0 = i;
14669                                 ins->inst_c1 = vreg;
14670                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14671                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14672                                 else
14673                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14674                         }
14675                 }
14676         }
14677
14678         if (cfg->gsharedvt_locals_var_ins) {
14679                 /* Nullify if unused */
14680                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14681                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14682         }
14683
14684         g_free (live_range_start);
14685         g_free (live_range_end);
14686         g_free (live_range_start_bb);
14687         g_free (live_range_end_bb);
14688 }
14689
14690 /**
14691  * FIXME:
14692  * - use 'iadd' instead of 'int_add'
14693  * - handling ovf opcodes: decompose in method_to_ir.
14694  * - unify iregs/fregs
14695  *   -> partly done, the missing parts are:
14696  *   - a more complete unification would involve unifying the hregs as well, so
14697  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14698  *     would no longer map to the machine hregs, so the code generators would need to
14699  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14700  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14701  *     fp/non-fp branches speeds it up by about 15%.
14702  * - use sext/zext opcodes instead of shifts
14703  * - add OP_ICALL
14704  * - get rid of TEMPLOADs if possible and use vregs instead
14705  * - clean up usage of OP_P/OP_ opcodes
14706  * - cleanup usage of DUMMY_USE
14707  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14708  *   stack
14709  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14710  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14711  * - make sure handle_stack_args () is called before the branch is emitted
14712  * - when the new IR is done, get rid of all unused stuff
14713  * - COMPARE/BEQ as separate instructions or unify them ?
14714  *   - keeping them separate allows specialized compare instructions like
14715  *     compare_imm, compare_membase
14716  *   - most back ends unify fp compare+branch, fp compare+ceq
14717  * - integrate mono_save_args into inline_method
14718  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14719  * - handle long shift opts on 32 bit platforms somehow: they require
14720  *   3 sregs (2 for arg1 and 1 for arg2)
14721  * - make byref a 'normal' type.
14722  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14723  *   variable if needed.
14724  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14725  *   like inline_method.
14726  * - remove inlining restrictions
14727  * - fix LNEG and enable cfold of INEG
14728  * - generalize x86 optimizations like ldelema as a peephole optimization
14729  * - add store_mem_imm for amd64
14730  * - optimize the loading of the interruption flag in the managed->native wrappers
14731  * - avoid special handling of OP_NOP in passes
14732  * - move code inserting instructions into one function/macro.
14733  * - try a coalescing phase after liveness analysis
14734  * - add float -> vreg conversion + local optimizations on !x86
14735  * - figure out how to handle decomposed branches during optimizations, ie.
14736  *   compare+branch, op_jump_table+op_br etc.
14737  * - promote RuntimeXHandles to vregs
14738  * - vtype cleanups:
14739  *   - add a NEW_VARLOADA_VREG macro
14740  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14741  *   accessing vtype fields.
14742  * - get rid of I8CONST on 64 bit platforms
14743  * - dealing with the increase in code size due to branches created during opcode
14744  *   decomposition:
14745  *   - use extended basic blocks
14746  *     - all parts of the JIT
14747  *     - handle_global_vregs () && local regalloc
14748  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14749  * - sources of increase in code size:
14750  *   - vtypes
14751  *   - long compares
14752  *   - isinst and castclass
14753  *   - lvregs not allocated to global registers even if used multiple times
14754  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14755  *   meaningful.
14756  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14757  * - add all micro optimizations from the old JIT
14758  * - put tree optimizations into the deadce pass
14759  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14760  *   specific function.
14761  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14762  *   fcompare + branchCC.
14763  * - create a helper function for allocating a stack slot, taking into account
14764  *   MONO_CFG_HAS_SPILLUP.
14765  * - merge r68207.
14766  * - merge the ia64 switch changes.
14767  * - optimize mono_regstate2_alloc_int/float.
14768  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14769  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14770  *   parts of the tree could be separated by other instructions, killing the tree
14771  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14772  *   instructions if the result of the load is used multiple times ?
14773  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14774  * - LAST MERGE: 108395.
14775  * - when returning vtypes in registers, generate IR and append it to the end of the
14776  *   last bb instead of doing it in the epilog.
14777  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14778  */
14779
14780 /*
14781
14782 NOTES
14783 -----
14784
14785 - When to decompose opcodes:
14786   - earlier: this makes some optimizations hard to implement, since the low level IR
14787   no longer contains the neccessary information. But it is easier to do.
14788   - later: harder to implement, enables more optimizations.
14789 - Branches inside bblocks:
14790   - created when decomposing complex opcodes.
14791     - branches to another bblock: harmless, but not tracked by the branch
14792       optimizations, so need to branch to a label at the start of the bblock.
14793     - branches to inside the same bblock: very problematic, trips up the local
14794       reg allocator. Can be fixed by spitting the current bblock, but that is a
14795       complex operation, since some local vregs can become global vregs etc.
14796 - Local/global vregs:
14797   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14798     local register allocator.
14799   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14800     structure, created by mono_create_var (). Assigned to hregs or the stack by
14801     the global register allocator.
14802 - When to do optimizations like alu->alu_imm:
14803   - earlier -> saves work later on since the IR will be smaller/simpler
14804   - later -> can work on more instructions
14805 - Handling of valuetypes:
14806   - When a vtype is pushed on the stack, a new temporary is created, an
14807     instruction computing its address (LDADDR) is emitted and pushed on
14808     the stack. Need to optimize cases when the vtype is used immediately as in
14809     argument passing, stloc etc.
14810 - Instead of the to_end stuff in the old JIT, simply call the function handling
14811   the values on the stack before emitting the last instruction of the bb.
14812 */
14813
14814 #endif /* DISABLE_JIT */