mono/mini/method-to-ir.c

   1 /**
   2  * \file
   3  * Convert CIL to the JIT internal representation
   4  *
   5  * Author:
   6  *   Paolo Molaro (lupus@ximian.com)
   7  *   Dietmar Maurer (dietmar@ximian.com)
   8  *
   9  * (C) 2002 Ximian, Inc.
  10  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  11  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  12  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  13  */
  14
  15 #include <config.h>
  16 #include <mono/utils/mono-compiler.h>
  17 #include "mini.h"
  18
  19 #ifndef DISABLE_JIT
  20
  21 #include <signal.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26
  27 #include <math.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_SYS_TIME_H
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef HAVE_ALLOCA_H
  36 #include <alloca.h>
  37 #endif
  38
  39 #include <mono/utils/memcheck.h>
  40 #include <mono/metadata/abi-details.h>
  41 #include <mono/metadata/assembly.h>
  42 #include <mono/metadata/attrdefs.h>
  43 #include <mono/metadata/loader.h>
  44 #include <mono/metadata/tabledefs.h>
  45 #include <mono/metadata/class.h>
  46 #include <mono/metadata/object.h>
  47 #include <mono/metadata/exception.h>
  48 #include <mono/metadata/opcodes.h>
  49 #include <mono/metadata/mono-endian.h>
  50 #include <mono/metadata/tokentype.h>
  51 #include <mono/metadata/tabledefs.h>
  52 #include <mono/metadata/marshal.h>
  53 #include <mono/metadata/debug-helpers.h>
  54 #include <mono/metadata/debug-internals.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66 #include <mono/utils/mono-threads-coop.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define 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_MONO_ERROR);                \
 111                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 112                 goto exception_exit;    \
 113         } while (0)
 114 #define DISABLE_AOT(cfg) do { \
 115                 if ((cfg)->verbose_level >= 2)                                            \
 116                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 117                 (cfg)->disable_aot = TRUE;                                                        \
 118         } while (0)
 119 #define LOAD_ERROR do { \
 120                 break_on_unverified ();                                                         \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 122                 goto exception_exit;                                                                    \
 123         } while (0)
 124
 125 #define TYPE_LOAD_ERROR(klass) do { \
 126                 cfg->exception_ptr = klass; \
 127                 LOAD_ERROR;                                     \
 128         } while (0)
 129
 130 #define CHECK_CFG_ERROR do {\
 131                 if (!mono_error_ok (&cfg->error)) { \
 132                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 133                         goto mono_error_exit; \
 134                 } \
 135         } while (0)
 136
 137 /* Determine whenever 'ins' represents a load of the 'this' argument */
 138 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 139
 140 static int ldind_to_load_membase (int opcode);
 141 static int stind_to_store_membase (int opcode);
 142
 143 int mono_op_to_op_imm (int opcode);
 144 int mono_op_to_op_imm_noemul (int opcode);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always);
 148 static MonoInst*
 149 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 150
 151 /* helper methods signatures */
 152 static MonoMethodSignature *helper_sig_domain_get;
 153 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 154 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 155 static MonoMethodSignature *helper_sig_jit_thread_attach;
 156 static MonoMethodSignature *helper_sig_get_tls_tramp;
 157 static MonoMethodSignature *helper_sig_set_tls_tramp;
 158
 159 /* type loading helpers */
 160 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, "System.Runtime.CompilerServices", "RuntimeHelpers")
 161 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, "System.Diagnostics", "DebuggableAttribute")
 162
 163 /*
 164  * Instruction metadata
 165  */
 166 #ifdef MINI_OP
 167 #undef MINI_OP
 168 #endif
 169 #ifdef MINI_OP3
 170 #undef MINI_OP3
 171 #endif
 172 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 173 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 174 #define NONE ' '
 175 #define IREG 'i'
 176 #define FREG 'f'
 177 #define VREG 'v'
 178 #define XREG 'x'
 179 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 180 #define LREG IREG
 181 #else
 182 #define LREG 'l'
 183 #endif
 184 /* keep in sync with the enum in mini.h */
 185 const char
 186 ins_info[] = {
 187 #include "mini-ops.h"
 188 };
 189 #undef MINI_OP
 190 #undef MINI_OP3
 191
 192 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 193 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 194 /*
 195  * This should contain the index of the last sreg + 1. This is not the same
 196  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 197  */
 198 const gint8 ins_sreg_counts[] = {
 199 #include "mini-ops.h"
 200 };
 201 #undef MINI_OP
 202 #undef MINI_OP3
 203
 204 guint32
 205 mono_alloc_ireg (MonoCompile *cfg)
 206 {
 207         return alloc_ireg (cfg);
 208 }
 209
 210 guint32
 211 mono_alloc_lreg (MonoCompile *cfg)
 212 {
 213         return alloc_lreg (cfg);
 214 }
 215
 216 guint32
 217 mono_alloc_freg (MonoCompile *cfg)
 218 {
 219         return alloc_freg (cfg);
 220 }
 221
 222 guint32
 223 mono_alloc_preg (MonoCompile *cfg)
 224 {
 225         return alloc_preg (cfg);
 226 }
 227
 228 guint32
 229 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 230 {
 231         return alloc_dreg (cfg, stack_type);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_ref:
 236  *
 237  *   Allocate an IREG, and mark it as holding a GC ref.
 238  */
 239 guint32
 240 mono_alloc_ireg_ref (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_ref (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_mp:
 247  *
 248  *   Allocate an IREG, and mark it as holding a managed pointer.
 249  */
 250 guint32
 251 mono_alloc_ireg_mp (MonoCompile *cfg)
 252 {
 253         return alloc_ireg_mp (cfg);
 254 }
 255
 256 /*
 257  * mono_alloc_ireg_copy:
 258  *
 259  *   Allocate an IREG with the same GC type as VREG.
 260  */
 261 guint32
 262 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 263 {
 264         if (vreg_is_ref (cfg, vreg))
 265                 return alloc_ireg_ref (cfg);
 266         else if (vreg_is_mp (cfg, vreg))
 267                 return alloc_ireg_mp (cfg);
 268         else
 269                 return alloc_ireg (cfg);
 270 }
 271
 272 guint
 273 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 274 {
 275         if (type->byref)
 276                 return OP_MOVE;
 277
 278         type = mini_get_underlying_type (type);
 279 handle_enum:
 280         switch (type->type) {
 281         case MONO_TYPE_I1:
 282         case MONO_TYPE_U1:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I2:
 285         case MONO_TYPE_U2:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I4:
 288         case MONO_TYPE_U4:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I:
 291         case MONO_TYPE_U:
 292         case MONO_TYPE_PTR:
 293         case MONO_TYPE_FNPTR:
 294                 return OP_MOVE;
 295         case MONO_TYPE_CLASS:
 296         case MONO_TYPE_STRING:
 297         case MONO_TYPE_OBJECT:
 298         case MONO_TYPE_SZARRAY:
 299         case MONO_TYPE_ARRAY:
 300                 return OP_MOVE;
 301         case MONO_TYPE_I8:
 302         case MONO_TYPE_U8:
 303 #if SIZEOF_REGISTER == 8
 304                 return OP_MOVE;
 305 #else
 306                 return OP_LMOVE;
 307 #endif
 308         case MONO_TYPE_R4:
 309                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 310         case MONO_TYPE_R8:
 311                 return OP_FMOVE;
 312         case MONO_TYPE_VALUETYPE:
 313                 if (type->data.klass->enumtype) {
 314                         type = mono_class_enum_basetype (type->data.klass);
 315                         goto handle_enum;
 316                 }
 317                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 318                         return OP_XMOVE;
 319                 return OP_VMOVE;
 320         case MONO_TYPE_TYPEDBYREF:
 321                 return OP_VMOVE;
 322         case MONO_TYPE_GENERICINST:
 323                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 324                         return OP_XMOVE;
 325                 type = &type->data.generic_class->container_class->byval_arg;
 326                 goto handle_enum;
 327         case MONO_TYPE_VAR:
 328         case MONO_TYPE_MVAR:
 329                 g_assert (cfg->gshared);
 330                 if (mini_type_var_is_vt (type))
 331                         return OP_VMOVE;
 332                 else
 333                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 334         default:
 335                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 336         }
 337         return -1;
 338 }
 339
 340 void
 341 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 342 {
 343         int i;
 344         MonoInst *tree;
 345         GString *str = g_string_new ("");
 346
 347         g_string_append_printf (str, "%s %d: [IN: ", msg, bb->block_num);
 348         for (i = 0; i < bb->in_count; ++i)
 349                 g_string_append_printf (str, " BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 350         g_string_append_printf (str, ", OUT: ");
 351         for (i = 0; i < bb->out_count; ++i)
 352                 g_string_append_printf (str, " BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 353         g_string_append_printf (str, " ]\n");
 354
 355         g_print ("%s", str->str);
 356         g_string_free (str, TRUE);
 357
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 368         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 369         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 370         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 break_on_unverified (void)
 375 {
 376         if (mini_get_debug_options ()->break_on_unverified)
 377                 G_BREAKPOINT ();
 378 }
 379
 380 static MONO_NEVER_INLINE void
 381 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *field_fname = mono_field_full_name (field);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (field_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 inline_failure (MonoCompile *cfg, const char *msg)
 393 {
 394         if (cfg->verbose_level >= 2)
 395                 printf ("inline failed: %s\n", msg);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 397 }
 398
 399 static MONO_NEVER_INLINE void
 400 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 401 {
 402         if (cfg->verbose_level > 2)                                                                                     \
 403                 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);
 404         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 405 }
 406
 407 static MONO_NEVER_INLINE void
 408 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 409 {
 410         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);
 411         if (cfg->verbose_level >= 2)
 412                 printf ("%s\n", cfg->exception_message);
 413         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 414 }
 415
 416 /*
 417  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 418  * foo<T> (int i) { ldarg.0; box T; }
 419  */
 420 #define UNVERIFIED do { \
 421         if (cfg->gsharedvt) { \
 422                 if (cfg->verbose_level > 2)                                                                     \
 423                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 424                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 425                 goto exception_exit;                                                                                    \
 426         }                                                                                                                                       \
 427         break_on_unverified ();                                                                                         \
 428         goto unverified;                                                                                                        \
 429 } while (0)
 430
 431 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 432                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 433                 if (!(tblock)) {        \
 434                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 435             NEW_BBLOCK (cfg, (tblock)); \
 436                         (tblock)->cil_code = (ip);      \
 437                         ADD_BBLOCK (cfg, (tblock));     \
 438                 } \
 439         } while (0)
 440
 441 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 442 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 443                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 444                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 445                 (dest)->sreg1 = (sr1); \
 446                 (dest)->sreg2 = (sr2); \
 447                 (dest)->inst_imm = (imm); \
 448                 (dest)->backend.shift_amount = (shift); \
 449                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 450         } while (0)
 451 #endif
 452
 453 /* Emit conversions so both operands of a binary opcode are of the same type */
 454 static void
 455 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 456 {
 457         MonoInst *arg1 = *arg1_ref;
 458         MonoInst *arg2 = *arg2_ref;
 459
 460         if (cfg->r4fp &&
 461                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 462                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 463                 MonoInst *conv;
 464
 465                 /* Mixing r4/r8 is allowed by the spec */
 466                 if (arg1->type == STACK_R4) {
 467                         int dreg = alloc_freg (cfg);
 468
 469                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 470                         conv->type = STACK_R8;
 471                         ins->sreg1 = dreg;
 472                         *arg1_ref = conv;
 473                 }
 474                 if (arg2->type == STACK_R4) {
 475                         int dreg = alloc_freg (cfg);
 476
 477                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 478                         conv->type = STACK_R8;
 479                         ins->sreg2 = dreg;
 480                         *arg2_ref = conv;
 481                 }
 482         }
 483
 484 #if SIZEOF_REGISTER == 8
 485         /* FIXME: Need to add many more cases */
 486         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 487                 MonoInst *widen;
 488
 489                 int dr = alloc_preg (cfg);
 490                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 491                 (ins)->sreg2 = widen->dreg;
 492         }
 493 #endif
 494 }
 495
 496 #define ADD_BINOP(op) do {      \
 497                 MONO_INST_NEW (cfg, ins, (op)); \
 498                 sp -= 2;        \
 499                 ins->sreg1 = sp [0]->dreg;      \
 500                 ins->sreg2 = sp [1]->dreg;      \
 501                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 502                 CHECK_TYPE (ins);       \
 503                 /* Have to insert a widening op */               \
 504         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 505         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 506         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 507         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 508         } while (0)
 509
 510 #define ADD_UNOP(op) do {       \
 511                 MONO_INST_NEW (cfg, ins, (op)); \
 512                 sp--;   \
 513                 ins->sreg1 = sp [0]->dreg;      \
 514                 type_from_op (cfg, ins, sp [0], NULL);  \
 515                 CHECK_TYPE (ins);       \
 516         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 517         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 518                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 519         } while (0)
 520
 521 #define ADD_BINCOND(next_block) do {    \
 522                 MonoInst *cmp;  \
 523                 sp -= 2; \
 524                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 525                 cmp->sreg1 = sp [0]->dreg;      \
 526                 cmp->sreg2 = sp [1]->dreg;      \
 527                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 528                 CHECK_TYPE (cmp);       \
 529                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 530                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 531                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 532                 GET_BBLOCK (cfg, tblock, target);               \
 533                 link_bblock (cfg, cfg->cbb, tblock);    \
 534                 ins->inst_true_bb = tblock;     \
 535                 if ((next_block)) {     \
 536                         link_bblock (cfg, cfg->cbb, (next_block));      \
 537                         ins->inst_false_bb = (next_block);      \
 538                         start_new_bblock = 1;   \
 539                 } else {        \
 540                         GET_BBLOCK (cfg, tblock, ip);           \
 541                         link_bblock (cfg, cfg->cbb, tblock);    \
 542                         ins->inst_false_bb = tblock;    \
 543                         start_new_bblock = 2;   \
 544                 }       \
 545                 if (sp != stack_start) {                                                                        \
 546                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 547                         CHECK_UNVERIFIABLE (cfg); \
 548                 } \
 549         MONO_ADD_INS (cfg->cbb, cmp); \
 550                 MONO_ADD_INS (cfg->cbb, ins);   \
 551         } while (0)
 552
 553 /* *
 554  * link_bblock: Links two basic blocks
 555  *
 556  * links two basic blocks in the control flow graph, the 'from'
 557  * argument is the starting block and the 'to' argument is the block
 558  * the control flow ends to after 'from'.
 559  */
 560 static void
 561 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 562 {
 563         MonoBasicBlock **newa;
 564         int i, found;
 565
 566 #if 0
 567         if (from->cil_code) {
 568                 if (to->cil_code)
 569                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 570                 else
 571                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 572         } else {
 573                 if (to->cil_code)
 574                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 575                 else
 576                         printf ("edge from entry to exit\n");
 577         }
 578 #endif
 579
 580         found = FALSE;
 581         for (i = 0; i < from->out_count; ++i) {
 582                 if (to == from->out_bb [i]) {
 583                         found = TRUE;
 584                         break;
 585                 }
 586         }
 587         if (!found) {
 588                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 589                 for (i = 0; i < from->out_count; ++i) {
 590                         newa [i] = from->out_bb [i];
 591                 }
 592                 newa [i] = to;
 593                 from->out_count++;
 594                 from->out_bb = newa;
 595         }
 596
 597         found = FALSE;
 598         for (i = 0; i < to->in_count; ++i) {
 599                 if (from == to->in_bb [i]) {
 600                         found = TRUE;
 601                         break;
 602                 }
 603         }
 604         if (!found) {
 605                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 606                 for (i = 0; i < to->in_count; ++i) {
 607                         newa [i] = to->in_bb [i];
 608                 }
 609                 newa [i] = from;
 610                 to->in_count++;
 611                 to->in_bb = newa;
 612         }
 613 }
 614
 615 void
 616 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 617 {
 618         link_bblock (cfg, from, to);
 619 }
 620
 621 /**
 622  * mono_find_block_region:
 623  *
 624  *   We mark each basic block with a region ID. We use that to avoid BB
 625  *   optimizations when blocks are in different regions.
 626  *
 627  * Returns:
 628  *   A region token that encodes where this region is, and information
 629  *   about the clause owner for this block.
 630  *
 631  *   The region encodes the try/catch/filter clause that owns this block
 632  *   as well as the type.  -1 is a special value that represents a block
 633  *   that is in none of try/catch/filter.
 634  */
 635 static int
 636 mono_find_block_region (MonoCompile *cfg, int offset)
 637 {
 638         MonoMethodHeader *header = cfg->header;
 639         MonoExceptionClause *clause;
 640         int i;
 641
 642         for (i = 0; i < header->num_clauses; ++i) {
 643                 clause = &header->clauses [i];
 644                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 645                     (offset < (clause->handler_offset)))
 646                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 647
 648                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 649                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 650                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 651                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 652                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 653                         else
 654                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 655                 }
 656         }
 657         for (i = 0; i < header->num_clauses; ++i) {
 658                 clause = &header->clauses [i];
 659
 660                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 661                         return ((i + 1) << 8) | clause->flags;
 662         }
 663
 664         return -1;
 665 }
 666
 667 static gboolean
 668 ip_in_finally_clause (MonoCompile *cfg, int offset)
 669 {
 670         MonoMethodHeader *header = cfg->header;
 671         MonoExceptionClause *clause;
 672         int i;
 673
 674         for (i = 0; i < header->num_clauses; ++i) {
 675                 clause = &header->clauses [i];
 676                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 677                         continue;
 678
 679                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 680                         return TRUE;
 681         }
 682         return FALSE;
 683 }
 684
 685 static GList*
 686 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 687 {
 688         MonoMethodHeader *header = cfg->header;
 689         MonoExceptionClause *clause;
 690         int i;
 691         GList *res = NULL;
 692
 693         for (i = 0; i < header->num_clauses; ++i) {
 694                 clause = &header->clauses [i];
 695                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 696                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 697                         if (clause->flags == type)
 698                                 res = g_list_append (res, clause);
 699                 }
 700         }
 701         return res;
 702 }
 703
 704 static void
 705 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 706 {
 707         MonoInst *var;
 708
 709         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 710         if (var)
 711                 return;
 712
 713         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 714         /* prevent it from being register allocated */
 715         var->flags |= MONO_INST_VOLATILE;
 716
 717         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 718 }
 719
 720 MonoInst *
 721 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 722 {
 723         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 724 }
 725
 726 static MonoInst*
 727 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 728 {
 729         MonoInst *var;
 730
 731         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 732         if (var)
 733                 return var;
 734
 735         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 736         /* prevent it from being register allocated */
 737         var->flags |= MONO_INST_VOLATILE;
 738
 739         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 740
 741         return var;
 742 }
 743
 744 /*
 745  * Returns the type used in the eval stack when @type is loaded.
 746  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 747  */
 748 void
 749 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 750 {
 751         MonoClass *klass;
 752
 753         type = mini_get_underlying_type (type);
 754         inst->klass = klass = mono_class_from_mono_type (type);
 755         if (type->byref) {
 756                 inst->type = STACK_MP;
 757                 return;
 758         }
 759
 760 handle_enum:
 761         switch (type->type) {
 762         case MONO_TYPE_VOID:
 763                 inst->type = STACK_INV;
 764                 return;
 765         case MONO_TYPE_I1:
 766         case MONO_TYPE_U1:
 767         case MONO_TYPE_I2:
 768         case MONO_TYPE_U2:
 769         case MONO_TYPE_I4:
 770         case MONO_TYPE_U4:
 771                 inst->type = STACK_I4;
 772                 return;
 773         case MONO_TYPE_I:
 774         case MONO_TYPE_U:
 775         case MONO_TYPE_PTR:
 776         case MONO_TYPE_FNPTR:
 777                 inst->type = STACK_PTR;
 778                 return;
 779         case MONO_TYPE_CLASS:
 780         case MONO_TYPE_STRING:
 781         case MONO_TYPE_OBJECT:
 782         case MONO_TYPE_SZARRAY:
 783         case MONO_TYPE_ARRAY:
 784                 inst->type = STACK_OBJ;
 785                 return;
 786         case MONO_TYPE_I8:
 787         case MONO_TYPE_U8:
 788                 inst->type = STACK_I8;
 789                 return;
 790         case MONO_TYPE_R4:
 791                 inst->type = cfg->r4_stack_type;
 792                 break;
 793         case MONO_TYPE_R8:
 794                 inst->type = STACK_R8;
 795                 return;
 796         case MONO_TYPE_VALUETYPE:
 797                 if (type->data.klass->enumtype) {
 798                         type = mono_class_enum_basetype (type->data.klass);
 799                         goto handle_enum;
 800                 } else {
 801                         inst->klass = klass;
 802                         inst->type = STACK_VTYPE;
 803                         return;
 804                 }
 805         case MONO_TYPE_TYPEDBYREF:
 806                 inst->klass = mono_defaults.typed_reference_class;
 807                 inst->type = STACK_VTYPE;
 808                 return;
 809         case MONO_TYPE_GENERICINST:
 810                 type = &type->data.generic_class->container_class->byval_arg;
 811                 goto handle_enum;
 812         case MONO_TYPE_VAR:
 813         case MONO_TYPE_MVAR:
 814                 g_assert (cfg->gshared);
 815                 if (mini_is_gsharedvt_type (type)) {
 816                         g_assert (cfg->gsharedvt);
 817                         inst->type = STACK_VTYPE;
 818                 } else {
 819                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 820                 }
 821                 return;
 822         default:
 823                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 824         }
 825 }
 826
 827 /*
 828  * The following tables are used to quickly validate the IL code in type_from_op ().
 829  */
 830 static const char
 831 bin_num_table [STACK_MAX] [STACK_MAX] = {
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 837         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 840         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 841 };
 842
 843 static const char
 844 neg_table [] = {
 845         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 846 };
 847
 848 /* reduce the size of this table */
 849 static const char
 850 bin_int_table [STACK_MAX] [STACK_MAX] = {
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 852         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 853         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 854         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 855         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 856         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 859 };
 860
 861 static const char
 862 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 863 /*      Inv i  L  p  F  &  O  vt r4 */
 864         {0},
 865         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 866         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 867         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 868         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 869         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 870         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 871         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 872         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 873 };
 874
 875 /* reduce the size of this table */
 876 static const char
 877 shift_table [STACK_MAX] [STACK_MAX] = {
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 879         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 880         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 881         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 882         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 883         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 884         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 885         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 886 };
 887
 888 /*
 889  * Tables to map from the non-specific opcode to the matching
 890  * type-specific opcode.
 891  */
 892 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 893 static const guint16
 894 binops_op_map [STACK_MAX] = {
 895         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
 896 };
 897
 898 /* handles from CEE_NEG to CEE_CONV_U8 */
 899 static const guint16
 900 unops_op_map [STACK_MAX] = {
 901         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
 902 };
 903
 904 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 905 static const guint16
 906 ovfops_op_map [STACK_MAX] = {
 907         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
 908 };
 909
 910 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 911 static const guint16
 912 ovf2ops_op_map [STACK_MAX] = {
 913         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
 914 };
 915
 916 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 917 static const guint16
 918 ovf3ops_op_map [STACK_MAX] = {
 919         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
 920 };
 921
 922 /* handles from CEE_BEQ to CEE_BLT_UN */
 923 static const guint16
 924 beqops_op_map [STACK_MAX] = {
 925         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
 926 };
 927
 928 /* handles from CEE_CEQ to CEE_CLT_UN */
 929 static const guint16
 930 ceqops_op_map [STACK_MAX] = {
 931         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
 932 };
 933
 934 /*
 935  * Sets ins->type (the type on the eval stack) according to the
 936  * type of the opcode and the arguments to it.
 937  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 938  *
 939  * FIXME: this function sets ins->type unconditionally in some cases, but
 940  * it should set it to invalid for some types (a conv.x on an object)
 941  */
 942 static void
 943 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 944 {
 945         switch (ins->opcode) {
 946         /* binops */
 947         case CEE_ADD:
 948         case CEE_SUB:
 949         case CEE_MUL:
 950         case CEE_DIV:
 951         case CEE_REM:
 952                 /* FIXME: check unverifiable args for STACK_MP */
 953                 ins->type = bin_num_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case CEE_DIV_UN:
 957         case CEE_REM_UN:
 958         case CEE_AND:
 959         case CEE_OR:
 960         case CEE_XOR:
 961                 ins->type = bin_int_table [src1->type] [src2->type];
 962                 ins->opcode += binops_op_map [ins->type];
 963                 break;
 964         case CEE_SHL:
 965         case CEE_SHR:
 966         case CEE_SHR_UN:
 967                 ins->type = shift_table [src1->type] [src2->type];
 968                 ins->opcode += binops_op_map [ins->type];
 969                 break;
 970         case OP_COMPARE:
 971         case OP_LCOMPARE:
 972         case OP_ICOMPARE:
 973                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 974                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 975                         ins->opcode = OP_LCOMPARE;
 976                 else if (src1->type == STACK_R4)
 977                         ins->opcode = OP_RCOMPARE;
 978                 else if (src1->type == STACK_R8)
 979                         ins->opcode = OP_FCOMPARE;
 980                 else
 981                         ins->opcode = OP_ICOMPARE;
 982                 break;
 983         case OP_ICOMPARE_IMM:
 984                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 985                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 986                         ins->opcode = OP_LCOMPARE_IMM;
 987                 break;
 988         case CEE_BEQ:
 989         case CEE_BGE:
 990         case CEE_BGT:
 991         case CEE_BLE:
 992         case CEE_BLT:
 993         case CEE_BNE_UN:
 994         case CEE_BGE_UN:
 995         case CEE_BGT_UN:
 996         case CEE_BLE_UN:
 997         case CEE_BLT_UN:
 998                 ins->opcode += beqops_op_map [src1->type];
 999                 break;
1000         case OP_CEQ:
1001                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         case OP_CGT:
1005         case OP_CGT_UN:
1006         case OP_CLT:
1007         case OP_CLT_UN:
1008                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1009                 ins->opcode += ceqops_op_map [src1->type];
1010                 break;
1011         /* unops */
1012         case CEE_NEG:
1013                 ins->type = neg_table [src1->type];
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_NOT:
1017                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1018                         ins->type = src1->type;
1019                 else
1020                         ins->type = STACK_INV;
1021                 ins->opcode += unops_op_map [ins->type];
1022                 break;
1023         case CEE_CONV_I1:
1024         case CEE_CONV_I2:
1025         case CEE_CONV_I4:
1026         case CEE_CONV_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += unops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_R_UN:
1031                 ins->type = STACK_R8;
1032                 switch (src1->type) {
1033                 case STACK_I4:
1034                 case STACK_PTR:
1035                         ins->opcode = OP_ICONV_TO_R_UN;
1036                         break;
1037                 case STACK_I8:
1038                         ins->opcode = OP_LCONV_TO_R_UN;
1039                         break;
1040                 }
1041                 break;
1042         case CEE_CONV_OVF_I1:
1043         case CEE_CONV_OVF_U1:
1044         case CEE_CONV_OVF_I2:
1045         case CEE_CONV_OVF_U2:
1046         case CEE_CONV_OVF_I4:
1047         case CEE_CONV_OVF_U4:
1048                 ins->type = STACK_I4;
1049                 ins->opcode += ovf3ops_op_map [src1->type];
1050                 break;
1051         case CEE_CONV_OVF_I_UN:
1052         case CEE_CONV_OVF_U_UN:
1053                 ins->type = STACK_PTR;
1054                 ins->opcode += ovf2ops_op_map [src1->type];
1055                 break;
1056         case CEE_CONV_OVF_I1_UN:
1057         case CEE_CONV_OVF_I2_UN:
1058         case CEE_CONV_OVF_I4_UN:
1059         case CEE_CONV_OVF_U1_UN:
1060         case CEE_CONV_OVF_U2_UN:
1061         case CEE_CONV_OVF_U4_UN:
1062                 ins->type = STACK_I4;
1063                 ins->opcode += ovf2ops_op_map [src1->type];
1064                 break;
1065         case CEE_CONV_U:
1066                 ins->type = STACK_PTR;
1067                 switch (src1->type) {
1068                 case STACK_I4:
1069                         ins->opcode = OP_ICONV_TO_U;
1070                         break;
1071                 case STACK_PTR:
1072                 case STACK_MP:
1073 #if SIZEOF_VOID_P == 8
1074                         ins->opcode = OP_LCONV_TO_U;
1075 #else
1076                         ins->opcode = OP_MOVE;
1077 #endif
1078                         break;
1079                 case STACK_I8:
1080                         ins->opcode = OP_LCONV_TO_U;
1081                         break;
1082                 case STACK_R8:
1083                         ins->opcode = OP_FCONV_TO_U;
1084                         break;
1085                 }
1086                 break;
1087         case CEE_CONV_I8:
1088         case CEE_CONV_U8:
1089                 ins->type = STACK_I8;
1090                 ins->opcode += unops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_OVF_I8:
1093         case CEE_CONV_OVF_U8:
1094                 ins->type = STACK_I8;
1095                 ins->opcode += ovf3ops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_OVF_U8_UN:
1098         case CEE_CONV_OVF_I8_UN:
1099                 ins->type = STACK_I8;
1100                 ins->opcode += ovf2ops_op_map [src1->type];
1101                 break;
1102         case CEE_CONV_R4:
1103                 ins->type = cfg->r4_stack_type;
1104                 ins->opcode += unops_op_map [src1->type];
1105                 break;
1106         case CEE_CONV_R8:
1107                 ins->type = STACK_R8;
1108                 ins->opcode += unops_op_map [src1->type];
1109                 break;
1110         case OP_CKFINITE:
1111                 ins->type = STACK_R8;
1112                 break;
1113         case CEE_CONV_U2:
1114         case CEE_CONV_U1:
1115                 ins->type = STACK_I4;
1116                 ins->opcode += ovfops_op_map [src1->type];
1117                 break;
1118         case CEE_CONV_I:
1119         case CEE_CONV_OVF_I:
1120         case CEE_CONV_OVF_U:
1121                 ins->type = STACK_PTR;
1122                 ins->opcode += ovfops_op_map [src1->type];
1123                 break;
1124         case CEE_ADD_OVF:
1125         case CEE_ADD_OVF_UN:
1126         case CEE_MUL_OVF:
1127         case CEE_MUL_OVF_UN:
1128         case CEE_SUB_OVF:
1129         case CEE_SUB_OVF_UN:
1130                 ins->type = bin_num_table [src1->type] [src2->type];
1131                 ins->opcode += ovfops_op_map [src1->type];
1132                 if (ins->type == STACK_R8)
1133                         ins->type = STACK_INV;
1134                 break;
1135         case OP_LOAD_MEMBASE:
1136                 ins->type = STACK_PTR;
1137                 break;
1138         case OP_LOADI1_MEMBASE:
1139         case OP_LOADU1_MEMBASE:
1140         case OP_LOADI2_MEMBASE:
1141         case OP_LOADU2_MEMBASE:
1142         case OP_LOADI4_MEMBASE:
1143         case OP_LOADU4_MEMBASE:
1144                 ins->type = STACK_PTR;
1145                 break;
1146         case OP_LOADI8_MEMBASE:
1147                 ins->type = STACK_I8;
1148                 break;
1149         case OP_LOADR4_MEMBASE:
1150                 ins->type = cfg->r4_stack_type;
1151                 break;
1152         case OP_LOADR8_MEMBASE:
1153                 ins->type = STACK_R8;
1154                 break;
1155         default:
1156                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1157                 break;
1158         }
1159
1160         if (ins->type == STACK_MP)
1161                 ins->klass = mono_defaults.object_class;
1162 }
1163
1164 static MonoClass*
1165 ldind_to_type (int op)
1166 {
1167         switch (op) {
1168         case CEE_LDIND_I1: return mono_defaults.sbyte_class;
1169         case CEE_LDIND_U1: return mono_defaults.byte_class;
1170         case CEE_LDIND_I2: return mono_defaults.int16_class;
1171         case CEE_LDIND_U2: return mono_defaults.uint16_class;
1172         case CEE_LDIND_I4: return mono_defaults.int32_class;
1173         case CEE_LDIND_U4: return mono_defaults.uint32_class;
1174         case CEE_LDIND_I8: return mono_defaults.int64_class;
1175         case CEE_LDIND_I: return mono_defaults.int_class;
1176         case CEE_LDIND_R4: return mono_defaults.single_class;
1177         case CEE_LDIND_R8: return mono_defaults.double_class;
1178         case CEE_LDIND_REF:return mono_defaults.object_class; //FIXME we should try to return a more specific type
1179         default: g_error ("Unknown ldind type %d", op);
1180         }
1181 }
1182
1183 #if 0
1184
1185 static const char
1186 param_table [STACK_MAX] [STACK_MAX] = {
1187         {0},
1188 };
1189
1190 static int
1191 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1192 {
1193         int i;
1194
1195         if (sig->hasthis) {
1196                 switch (args->type) {
1197                 case STACK_I4:
1198                 case STACK_I8:
1199                 case STACK_R8:
1200                 case STACK_VTYPE:
1201                 case STACK_INV:
1202                         return 0;
1203                 }
1204                 args++;
1205         }
1206         for (i = 0; i < sig->param_count; ++i) {
1207                 switch (args [i].type) {
1208                 case STACK_INV:
1209                         return 0;
1210                 case STACK_MP:
1211                         if (!sig->params [i]->byref)
1212                                 return 0;
1213                         continue;
1214                 case STACK_OBJ:
1215                         if (sig->params [i]->byref)
1216                                 return 0;
1217                         switch (sig->params [i]->type) {
1218                         case MONO_TYPE_CLASS:
1219                         case MONO_TYPE_STRING:
1220                         case MONO_TYPE_OBJECT:
1221                         case MONO_TYPE_SZARRAY:
1222                         case MONO_TYPE_ARRAY:
1223                                 break;
1224                         default:
1225                                 return 0;
1226                         }
1227                         continue;
1228                 case STACK_R8:
1229                         if (sig->params [i]->byref)
1230                                 return 0;
1231                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1232                                 return 0;
1233                         continue;
1234                 case STACK_PTR:
1235                 case STACK_I4:
1236                 case STACK_I8:
1237                 case STACK_VTYPE:
1238                         break;
1239                 }
1240                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1241                         return 0;*/
1242         }
1243         return 1;
1244 }
1245 #endif
1246
1247 /*
1248  * When we need a pointer to the current domain many times in a method, we
1249  * call mono_domain_get() once and we store the result in a local variable.
1250  * This function returns the variable that represents the MonoDomain*.
1251  */
1252 inline static MonoInst *
1253 mono_get_domainvar (MonoCompile *cfg)
1254 {
1255         if (!cfg->domainvar)
1256                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1257         return cfg->domainvar;
1258 }
1259
1260 /*
1261  * The got_var contains the address of the Global Offset Table when AOT
1262  * compiling.
1263  */
1264 MonoInst *
1265 mono_get_got_var (MonoCompile *cfg)
1266 {
1267         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1268                 return NULL;
1269         if (!cfg->got_var) {
1270                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1271         }
1272         return cfg->got_var;
1273 }
1274
1275 static void
1276 mono_create_rgctx_var (MonoCompile *cfg)
1277 {
1278         if (!cfg->rgctx_var) {
1279                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1280                 /* force the var to be stack allocated */
1281                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1282         }
1283 }
1284
1285 static MonoInst *
1286 mono_get_vtable_var (MonoCompile *cfg)
1287 {
1288         g_assert (cfg->gshared);
1289
1290         mono_create_rgctx_var (cfg);
1291
1292         return cfg->rgctx_var;
1293 }
1294
1295 static MonoType*
1296 type_from_stack_type (MonoInst *ins) {
1297         switch (ins->type) {
1298         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1299         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1300         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1301         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1302         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1303         case STACK_MP:
1304                 return &ins->klass->this_arg;
1305         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1306         case STACK_VTYPE: return &ins->klass->byval_arg;
1307         default:
1308                 g_error ("stack type %d to monotype not handled\n", ins->type);
1309         }
1310         return NULL;
1311 }
1312
1313 static G_GNUC_UNUSED int
1314 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1315 {
1316         t = mono_type_get_underlying_type (t);
1317         switch (t->type) {
1318         case MONO_TYPE_I1:
1319         case MONO_TYPE_U1:
1320         case MONO_TYPE_I2:
1321         case MONO_TYPE_U2:
1322         case MONO_TYPE_I4:
1323         case MONO_TYPE_U4:
1324                 return STACK_I4;
1325         case MONO_TYPE_I:
1326         case MONO_TYPE_U:
1327         case MONO_TYPE_PTR:
1328         case MONO_TYPE_FNPTR:
1329                 return STACK_PTR;
1330         case MONO_TYPE_CLASS:
1331         case MONO_TYPE_STRING:
1332         case MONO_TYPE_OBJECT:
1333         case MONO_TYPE_SZARRAY:
1334         case MONO_TYPE_ARRAY:
1335                 return STACK_OBJ;
1336         case MONO_TYPE_I8:
1337         case MONO_TYPE_U8:
1338                 return STACK_I8;
1339         case MONO_TYPE_R4:
1340                 return cfg->r4_stack_type;
1341         case MONO_TYPE_R8:
1342                 return STACK_R8;
1343         case MONO_TYPE_VALUETYPE:
1344         case MONO_TYPE_TYPEDBYREF:
1345                 return STACK_VTYPE;
1346         case MONO_TYPE_GENERICINST:
1347                 if (mono_type_generic_inst_is_valuetype (t))
1348                         return STACK_VTYPE;
1349                 else
1350                         return STACK_OBJ;
1351                 break;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355
1356         return -1;
1357 }
1358
1359 static MonoClass*
1360 array_access_to_klass (int opcode)
1361 {
1362         switch (opcode) {
1363         case CEE_LDELEM_U1:
1364                 return mono_defaults.byte_class;
1365         case CEE_LDELEM_U2:
1366                 return mono_defaults.uint16_class;
1367         case CEE_LDELEM_I:
1368         case CEE_STELEM_I:
1369                 return mono_defaults.int_class;
1370         case CEE_LDELEM_I1:
1371         case CEE_STELEM_I1:
1372                 return mono_defaults.sbyte_class;
1373         case CEE_LDELEM_I2:
1374         case CEE_STELEM_I2:
1375                 return mono_defaults.int16_class;
1376         case CEE_LDELEM_I4:
1377         case CEE_STELEM_I4:
1378                 return mono_defaults.int32_class;
1379         case CEE_LDELEM_U4:
1380                 return mono_defaults.uint32_class;
1381         case CEE_LDELEM_I8:
1382         case CEE_STELEM_I8:
1383                 return mono_defaults.int64_class;
1384         case CEE_LDELEM_R4:
1385         case CEE_STELEM_R4:
1386                 return mono_defaults.single_class;
1387         case CEE_LDELEM_R8:
1388         case CEE_STELEM_R8:
1389                 return mono_defaults.double_class;
1390         case CEE_LDELEM_REF:
1391         case CEE_STELEM_REF:
1392                 return mono_defaults.object_class;
1393         default:
1394                 g_assert_not_reached ();
1395         }
1396         return NULL;
1397 }
1398
1399 /*
1400  * We try to share variables when possible
1401  */
1402 static MonoInst *
1403 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1404 {
1405         MonoInst *res;
1406         int pos, vnum;
1407
1408         /* inlining can result in deeper stacks */
1409         if (slot >= cfg->header->max_stack)
1410                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1411
1412         pos = ins->type - 1 + slot * STACK_MAX;
1413
1414         switch (ins->type) {
1415         case STACK_I4:
1416         case STACK_I8:
1417         case STACK_R8:
1418         case STACK_PTR:
1419         case STACK_MP:
1420         case STACK_OBJ:
1421                 if ((vnum = cfg->intvars [pos]))
1422                         return cfg->varinfo [vnum];
1423                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1424                 cfg->intvars [pos] = res->inst_c0;
1425                 break;
1426         default:
1427                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1428         }
1429         return res;
1430 }
1431
1432 static void
1433 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1434 {
1435         /*
1436          * Don't use this if a generic_context is set, since that means AOT can't
1437          * look up the method using just the image+token.
1438          * table == 0 means this is a reference made from a wrapper.
1439          */
1440         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1441                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1442                 jump_info_token->image = image;
1443                 jump_info_token->token = token;
1444                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1445         }
1446 }
1447
1448 /*
1449  * This function is called to handle items that are left on the evaluation stack
1450  * at basic block boundaries. What happens is that we save the values to local variables
1451  * and we reload them later when first entering the target basic block (with the
1452  * handle_loaded_temps () function).
1453  * A single joint point will use the same variables (stored in the array bb->out_stack or
1454  * bb->in_stack, if the basic block is before or after the joint point).
1455  *
1456  * This function needs to be called _before_ emitting the last instruction of
1457  * the bb (i.e. before emitting a branch).
1458  * If the stack merge fails at a join point, cfg->unverifiable is set.
1459  */
1460 static void
1461 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1462 {
1463         int i, bindex;
1464         MonoBasicBlock *bb = cfg->cbb;
1465         MonoBasicBlock *outb;
1466         MonoInst *inst, **locals;
1467         gboolean found;
1468
1469         if (!count)
1470                 return;
1471         if (cfg->verbose_level > 3)
1472                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1473         if (!bb->out_scount) {
1474                 bb->out_scount = count;
1475                 //printf ("bblock %d has out:", bb->block_num);
1476                 found = FALSE;
1477                 for (i = 0; i < bb->out_count; ++i) {
1478                         outb = bb->out_bb [i];
1479                         /* exception handlers are linked, but they should not be considered for stack args */
1480                         if (outb->flags & BB_EXCEPTION_HANDLER)
1481                                 continue;
1482                         //printf (" %d", outb->block_num);
1483                         if (outb->in_stack) {
1484                                 found = TRUE;
1485                                 bb->out_stack = outb->in_stack;
1486                                 break;
1487                         }
1488                 }
1489                 //printf ("\n");
1490                 if (!found) {
1491                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1492                         for (i = 0; i < count; ++i) {
1493                                 /*
1494                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1495                                  * stack slot and if they are of the same type.
1496                                  * This won't cause conflicts since if 'local' is used to
1497                                  * store one of the values in the in_stack of a bblock, then
1498                                  * the same variable will be used for the same outgoing stack
1499                                  * slot as well.
1500                                  * This doesn't work when inlining methods, since the bblocks
1501                                  * in the inlined methods do not inherit their in_stack from
1502                                  * the bblock they are inlined to. See bug #58863 for an
1503                                  * example.
1504                                  */
1505                                 if (cfg->inlined_method)
1506                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1507                                 else
1508                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1509                         }
1510                 }
1511         }
1512
1513         for (i = 0; i < bb->out_count; ++i) {
1514                 outb = bb->out_bb [i];
1515                 /* exception handlers are linked, but they should not be considered for stack args */
1516                 if (outb->flags & BB_EXCEPTION_HANDLER)
1517                         continue;
1518                 if (outb->in_scount) {
1519                         if (outb->in_scount != bb->out_scount) {
1520                                 cfg->unverifiable = TRUE;
1521                                 return;
1522                         }
1523                         continue; /* check they are the same locals */
1524                 }
1525                 outb->in_scount = count;
1526                 outb->in_stack = bb->out_stack;
1527         }
1528
1529         locals = bb->out_stack;
1530         cfg->cbb = bb;
1531         for (i = 0; i < count; ++i) {
1532                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1533                 inst->cil_code = sp [i]->cil_code;
1534                 sp [i] = locals [i];
1535                 if (cfg->verbose_level > 3)
1536                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1537         }
1538
1539         /*
1540          * It is possible that the out bblocks already have in_stack assigned, and
1541          * the in_stacks differ. In this case, we will store to all the different
1542          * in_stacks.
1543          */
1544
1545         found = TRUE;
1546         bindex = 0;
1547         while (found) {
1548                 /* Find a bblock which has a different in_stack */
1549                 found = FALSE;
1550                 while (bindex < bb->out_count) {
1551                         outb = bb->out_bb [bindex];
1552                         /* exception handlers are linked, but they should not be considered for stack args */
1553                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1554                                 bindex++;
1555                                 continue;
1556                         }
1557                         if (outb->in_stack != locals) {
1558                                 for (i = 0; i < count; ++i) {
1559                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1560                                         inst->cil_code = sp [i]->cil_code;
1561                                         sp [i] = locals [i];
1562                                         if (cfg->verbose_level > 3)
1563                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1564                                 }
1565                                 locals = outb->in_stack;
1566                                 found = TRUE;
1567                                 break;
1568                         }
1569                         bindex ++;
1570                 }
1571         }
1572 }
1573
1574 MonoInst*
1575 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1576 {
1577         MonoInst *ins;
1578
1579         if (cfg->compile_aot) {
1580                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1581         } else {
1582                 MonoJumpInfo ji;
1583                 gpointer target;
1584                 MonoError error;
1585
1586                 ji.type = patch_type;
1587                 ji.data.target = data;
1588                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1589                 mono_error_assert_ok (&error);
1590
1591                 EMIT_NEW_PCONST (cfg, ins, target);
1592         }
1593         return ins;
1594 }
1595
1596 static MonoInst*
1597 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1598 {
1599         int tls_offset = mono_tls_get_tls_offset (key);
1600
1601         if (cfg->compile_aot)
1602                 return NULL;
1603
1604         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1605                 MonoInst *ins;
1606                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1607                 ins->dreg = mono_alloc_preg (cfg);
1608                 ins->inst_offset = tls_offset;
1609                 return ins;
1610         }
1611         return NULL;
1612 }
1613
1614 static MonoInst*
1615 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1616 {
1617         int tls_offset = mono_tls_get_tls_offset (key);
1618
1619         if (cfg->compile_aot)
1620                 return NULL;
1621
1622         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1623                 MonoInst *ins;
1624                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1625                 ins->sreg1 = value->dreg;
1626                 ins->inst_offset = tls_offset;
1627                 return ins;
1628         }
1629         return NULL;
1630 }
1631
1632
1633 MonoInst*
1634 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1635 {
1636         MonoInst *fast_tls = NULL;
1637
1638         if (!mini_get_debug_options ()->use_fallback_tls)
1639                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1640
1641         if (fast_tls) {
1642                 MONO_ADD_INS (cfg->cbb, fast_tls);
1643                 return fast_tls;
1644         }
1645
1646         if (cfg->compile_aot) {
1647                 MonoInst *addr;
1648                 /*
1649                  * tls getters are critical pieces of code and we don't want to resolve them
1650                  * through the standard plt/tramp mechanism since we might expose ourselves
1651                  * to crashes and infinite recursions.
1652                  */
1653                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1654                 return mini_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1655         } else {
1656                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1657                 return mono_emit_jit_icall (cfg, getter, NULL);
1658         }
1659 }
1660
1661 static MonoInst*
1662 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1663 {
1664         MonoInst *fast_tls = NULL;
1665
1666         if (!mini_get_debug_options ()->use_fallback_tls)
1667                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1668
1669         if (fast_tls) {
1670                 MONO_ADD_INS (cfg->cbb, fast_tls);
1671                 return fast_tls;
1672         }
1673
1674         if (cfg->compile_aot) {
1675                 MonoInst *addr;
1676                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1677                 return mini_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1678         } else {
1679                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1680                 return mono_emit_jit_icall (cfg, setter, &value);
1681         }
1682 }
1683
1684 /*
1685  * emit_push_lmf:
1686  *
1687  *   Emit IR to push the current LMF onto the LMF stack.
1688  */
1689 static void
1690 emit_push_lmf (MonoCompile *cfg)
1691 {
1692         /*
1693          * Emit IR to push the LMF:
1694          * lmf_addr = <lmf_addr from tls>
1695          * lmf->lmf_addr = lmf_addr
1696          * lmf->prev_lmf = *lmf_addr
1697          * *lmf_addr = lmf
1698          */
1699         MonoInst *ins, *lmf_ins;
1700
1701         if (!cfg->lmf_ir)
1702                 return;
1703
1704         int lmf_reg, prev_lmf_reg;
1705         /*
1706          * Store lmf_addr in a variable, so it can be allocated to a global register.
1707          */
1708         if (!cfg->lmf_addr_var)
1709                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1710
1711 #ifdef HOST_WIN32
1712         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1713         g_assert (ins);
1714         int jit_tls_dreg = ins->dreg;
1715
1716         lmf_reg = alloc_preg (cfg);
1717         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1718 #else
1719         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1720         g_assert (lmf_ins);
1721 #endif
1722         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1723
1724         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1725         lmf_reg = ins->dreg;
1726
1727         prev_lmf_reg = alloc_preg (cfg);
1728         /* Save previous_lmf */
1729         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1730         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1731         /* Set new lmf */
1732         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1733 }
1734
1735 /*
1736  * emit_pop_lmf:
1737  *
1738  *   Emit IR to pop the current LMF from the LMF stack.
1739  */
1740 static void
1741 emit_pop_lmf (MonoCompile *cfg)
1742 {
1743         int lmf_reg, lmf_addr_reg;
1744         MonoInst *ins;
1745
1746         if (!cfg->lmf_ir)
1747                 return;
1748
1749         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1750         lmf_reg = ins->dreg;
1751
1752         int prev_lmf_reg;
1753         /*
1754          * Emit IR to pop the LMF:
1755          * *(lmf->lmf_addr) = lmf->prev_lmf
1756          */
1757         /* This could be called before emit_push_lmf () */
1758         if (!cfg->lmf_addr_var)
1759                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1760         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1761
1762         prev_lmf_reg = alloc_preg (cfg);
1763         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1764         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1765 }
1766
1767 static void
1768 emit_instrumentation_call (MonoCompile *cfg, void *func)
1769 {
1770         MonoInst *iargs [1];
1771
1772         /*
1773          * Avoid instrumenting inlined methods since it can
1774          * distort profiling results.
1775          */
1776         if (cfg->method != cfg->current_method)
1777                 return;
1778
1779         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
1780                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
1781                 mono_emit_jit_icall (cfg, func, iargs);
1782         }
1783 }
1784
1785 static int
1786 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1787 {
1788 handle_enum:
1789         type = mini_get_underlying_type (type);
1790         switch (type->type) {
1791         case MONO_TYPE_VOID:
1792                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1793         case MONO_TYPE_I1:
1794         case MONO_TYPE_U1:
1795         case MONO_TYPE_I2:
1796         case MONO_TYPE_U2:
1797         case MONO_TYPE_I4:
1798         case MONO_TYPE_U4:
1799                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1800         case MONO_TYPE_I:
1801         case MONO_TYPE_U:
1802         case MONO_TYPE_PTR:
1803         case MONO_TYPE_FNPTR:
1804                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1805         case MONO_TYPE_CLASS:
1806         case MONO_TYPE_STRING:
1807         case MONO_TYPE_OBJECT:
1808         case MONO_TYPE_SZARRAY:
1809         case MONO_TYPE_ARRAY:
1810                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1811         case MONO_TYPE_I8:
1812         case MONO_TYPE_U8:
1813                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1814         case MONO_TYPE_R4:
1815                 if (cfg->r4fp)
1816                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1817                 else
1818                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1819         case MONO_TYPE_R8:
1820                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1821         case MONO_TYPE_VALUETYPE:
1822                 if (type->data.klass->enumtype) {
1823                         type = mono_class_enum_basetype (type->data.klass);
1824                         goto handle_enum;
1825                 } else
1826                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1827         case MONO_TYPE_TYPEDBYREF:
1828                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1829         case MONO_TYPE_GENERICINST:
1830                 type = &type->data.generic_class->container_class->byval_arg;
1831                 goto handle_enum;
1832         case MONO_TYPE_VAR:
1833         case MONO_TYPE_MVAR:
1834                 /* gsharedvt */
1835                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1836         default:
1837                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1838         }
1839         return -1;
1840 }
1841
1842 //XXX this ignores if t is byref
1843 #define MONO_TYPE_IS_PRIMITIVE_SCALAR(t) ((((((t)->type >= MONO_TYPE_BOOLEAN && (t)->type <= MONO_TYPE_U8) || ((t)->type >= MONO_TYPE_I && (t)->type <= MONO_TYPE_U)))))
1844
1845 /*
1846  * target_type_is_incompatible:
1847  * @cfg: MonoCompile context
1848  *
1849  * Check that the item @arg on the evaluation stack can be stored
1850  * in the target type (can be a local, or field, etc).
1851  * The cfg arg can be used to check if we need verification or just
1852  * validity checks.
1853  *
1854  * Returns: non-0 value if arg can't be stored on a target.
1855  */
1856 static int
1857 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1858 {
1859         MonoType *simple_type;
1860         MonoClass *klass;
1861
1862         if (target->byref) {
1863                 /* FIXME: check that the pointed to types match */
1864                 if (arg->type == STACK_MP) {
1865                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1866                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1867                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1868
1869                         /* if the target is native int& or same type */
1870                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
1871                                 return 0;
1872
1873                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
1874                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
1875                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
1876                                 return 0;
1877                         return 1;
1878                 }
1879                 if (arg->type == STACK_PTR)
1880                         return 0;
1881                 return 1;
1882         }
1883
1884         simple_type = mini_get_underlying_type (target);
1885         switch (simple_type->type) {
1886         case MONO_TYPE_VOID:
1887                 return 1;
1888         case MONO_TYPE_I1:
1889         case MONO_TYPE_U1:
1890         case MONO_TYPE_I2:
1891         case MONO_TYPE_U2:
1892         case MONO_TYPE_I4:
1893         case MONO_TYPE_U4:
1894                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1895                         return 1;
1896                 return 0;
1897         case MONO_TYPE_PTR:
1898                 /* STACK_MP is needed when setting pinned locals */
1899                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1900                         return 1;
1901                 return 0;
1902         case MONO_TYPE_I:
1903         case MONO_TYPE_U:
1904         case MONO_TYPE_FNPTR:
1905                 /*
1906                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1907                  * in native int. (#688008).
1908                  */
1909                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1910                         return 1;
1911                 return 0;
1912         case MONO_TYPE_CLASS:
1913         case MONO_TYPE_STRING:
1914         case MONO_TYPE_OBJECT:
1915         case MONO_TYPE_SZARRAY:
1916         case MONO_TYPE_ARRAY:
1917                 if (arg->type != STACK_OBJ)
1918                         return 1;
1919                 /* FIXME: check type compatibility */
1920                 return 0;
1921         case MONO_TYPE_I8:
1922         case MONO_TYPE_U8:
1923                 if (arg->type != STACK_I8)
1924                         return 1;
1925                 return 0;
1926         case MONO_TYPE_R4:
1927                 if (arg->type != cfg->r4_stack_type)
1928                         return 1;
1929                 return 0;
1930         case MONO_TYPE_R8:
1931                 if (arg->type != STACK_R8)
1932                         return 1;
1933                 return 0;
1934         case MONO_TYPE_VALUETYPE:
1935                 if (arg->type != STACK_VTYPE)
1936                         return 1;
1937                 klass = mono_class_from_mono_type (simple_type);
1938                 if (klass != arg->klass)
1939                         return 1;
1940                 return 0;
1941         case MONO_TYPE_TYPEDBYREF:
1942                 if (arg->type != STACK_VTYPE)
1943                         return 1;
1944                 klass = mono_class_from_mono_type (simple_type);
1945                 if (klass != arg->klass)
1946                         return 1;
1947                 return 0;
1948         case MONO_TYPE_GENERICINST:
1949                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
1950                         MonoClass *target_class;
1951                         if (arg->type != STACK_VTYPE)
1952                                 return 1;
1953                         klass = mono_class_from_mono_type (simple_type);
1954                         target_class = mono_class_from_mono_type (target);
1955                         /* The second cases is needed when doing partial sharing */
1956                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
1957                                 return 1;
1958                         return 0;
1959                 } else {
1960                         if (arg->type != STACK_OBJ)
1961                                 return 1;
1962                         /* FIXME: check type compatibility */
1963                         return 0;
1964                 }
1965         case MONO_TYPE_VAR:
1966         case MONO_TYPE_MVAR:
1967                 g_assert (cfg->gshared);
1968                 if (mini_type_var_is_vt (simple_type)) {
1969                         if (arg->type != STACK_VTYPE)
1970                                 return 1;
1971                 } else {
1972                         if (arg->type != STACK_OBJ)
1973                                 return 1;
1974                 }
1975                 return 0;
1976         default:
1977                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
1978         }
1979         return 1;
1980 }
1981
1982 /*
1983  * Prepare arguments for passing to a function call.
1984  * Return a non-zero value if the arguments can't be passed to the given
1985  * signature.
1986  * The type checks are not yet complete and some conversions may need
1987  * casts on 32 or 64 bit architectures.
1988  *
1989  * FIXME: implement this using target_type_is_incompatible ()
1990  */
1991 static int
1992 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
1993 {
1994         MonoType *simple_type;
1995         int i;
1996
1997         if (sig->hasthis) {
1998                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
1999                         return 1;
2000                 args++;
2001         }
2002         for (i = 0; i < sig->param_count; ++i) {
2003                 if (sig->params [i]->byref) {
2004                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2005                                 return 1;
2006                         continue;
2007                 }
2008                 simple_type = mini_get_underlying_type (sig->params [i]);
2009 handle_enum:
2010                 switch (simple_type->type) {
2011                 case MONO_TYPE_VOID:
2012                         return 1;
2013                         continue;
2014                 case MONO_TYPE_I1:
2015                 case MONO_TYPE_U1:
2016                 case MONO_TYPE_I2:
2017                 case MONO_TYPE_U2:
2018                 case MONO_TYPE_I4:
2019                 case MONO_TYPE_U4:
2020                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2021                                 return 1;
2022                         continue;
2023                 case MONO_TYPE_I:
2024                 case MONO_TYPE_U:
2025                 case MONO_TYPE_PTR:
2026                 case MONO_TYPE_FNPTR:
2027                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2028                                 return 1;
2029                         continue;
2030                 case MONO_TYPE_CLASS:
2031                 case MONO_TYPE_STRING:
2032                 case MONO_TYPE_OBJECT:
2033                 case MONO_TYPE_SZARRAY:
2034                 case MONO_TYPE_ARRAY:
2035                         if (args [i]->type != STACK_OBJ)
2036                                 return 1;
2037                         continue;
2038                 case MONO_TYPE_I8:
2039                 case MONO_TYPE_U8:
2040                         if (args [i]->type != STACK_I8)
2041                                 return 1;
2042                         continue;
2043                 case MONO_TYPE_R4:
2044                         if (args [i]->type != cfg->r4_stack_type)
2045                                 return 1;
2046                         continue;
2047                 case MONO_TYPE_R8:
2048                         if (args [i]->type != STACK_R8)
2049                                 return 1;
2050                         continue;
2051                 case MONO_TYPE_VALUETYPE:
2052                         if (simple_type->data.klass->enumtype) {
2053                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2054                                 goto handle_enum;
2055                         }
2056                         if (args [i]->type != STACK_VTYPE)
2057                                 return 1;
2058                         continue;
2059                 case MONO_TYPE_TYPEDBYREF:
2060                         if (args [i]->type != STACK_VTYPE)
2061                                 return 1;
2062                         continue;
2063                 case MONO_TYPE_GENERICINST:
2064                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2065                         goto handle_enum;
2066                 case MONO_TYPE_VAR:
2067                 case MONO_TYPE_MVAR:
2068                         /* gsharedvt */
2069                         if (args [i]->type != STACK_VTYPE)
2070                                 return 1;
2071                         continue;
2072                 default:
2073                         g_error ("unknown type 0x%02x in check_call_signature",
2074                                  simple_type->type);
2075                 }
2076         }
2077         return 0;
2078 }
2079
2080 static int
2081 callvirt_to_call (int opcode)
2082 {
2083         switch (opcode) {
2084         case OP_CALL_MEMBASE:
2085                 return OP_CALL;
2086         case OP_VOIDCALL_MEMBASE:
2087                 return OP_VOIDCALL;
2088         case OP_FCALL_MEMBASE:
2089                 return OP_FCALL;
2090         case OP_RCALL_MEMBASE:
2091                 return OP_RCALL;
2092         case OP_VCALL_MEMBASE:
2093                 return OP_VCALL;
2094         case OP_LCALL_MEMBASE:
2095                 return OP_LCALL;
2096         default:
2097                 g_assert_not_reached ();
2098         }
2099
2100         return -1;
2101 }
2102
2103 static int
2104 callvirt_to_call_reg (int opcode)
2105 {
2106         switch (opcode) {
2107         case OP_CALL_MEMBASE:
2108                 return OP_CALL_REG;
2109         case OP_VOIDCALL_MEMBASE:
2110                 return OP_VOIDCALL_REG;
2111         case OP_FCALL_MEMBASE:
2112                 return OP_FCALL_REG;
2113         case OP_RCALL_MEMBASE:
2114                 return OP_RCALL_REG;
2115         case OP_VCALL_MEMBASE:
2116                 return OP_VCALL_REG;
2117         case OP_LCALL_MEMBASE:
2118                 return OP_LCALL_REG;
2119         default:
2120                 g_assert_not_reached ();
2121         }
2122
2123         return -1;
2124 }
2125
2126 /* Either METHOD or IMT_ARG needs to be set */
2127 static void
2128 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2129 {
2130         int method_reg;
2131
2132         if (COMPILE_LLVM (cfg)) {
2133                 if (imt_arg) {
2134                         method_reg = alloc_preg (cfg);
2135                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2136                 } else {
2137                         MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2138                         method_reg = ins->dreg;
2139                 }
2140
2141 #ifdef ENABLE_LLVM
2142                 call->imt_arg_reg = method_reg;
2143 #endif
2144                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2145                 return;
2146         }
2147
2148         if (imt_arg) {
2149                 method_reg = alloc_preg (cfg);
2150                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2151         } else {
2152                 MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2153                 method_reg = ins->dreg;
2154         }
2155
2156         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2157 }
2158
2159 static MonoJumpInfo *
2160 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2161 {
2162         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2163
2164         ji->ip.i = ip;
2165         ji->type = type;
2166         ji->data.target = target;
2167
2168         return ji;
2169 }
2170
2171 int
2172 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2173 {
2174         if (cfg->gshared)
2175                 return mono_class_check_context_used (klass);
2176         else
2177                 return 0;
2178 }
2179
2180 static int
2181 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2182 {
2183         if (cfg->gshared)
2184                 return mono_method_check_context_used (method);
2185         else
2186                 return 0;
2187 }
2188
2189 /*
2190  * check_method_sharing:
2191  *
2192  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2193  */
2194 static void
2195 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2196 {
2197         gboolean pass_vtable = FALSE;
2198         gboolean pass_mrgctx = FALSE;
2199
2200         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2201                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2202                 gboolean sharable = FALSE;
2203
2204                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2205                         sharable = TRUE;
2206
2207                 /*
2208                  * Pass vtable iff target method might
2209                  * be shared, which means that sharing
2210                  * is enabled for its class and its
2211                  * context is sharable (and it's not a
2212                  * generic method).
2213                  */
2214                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2215                         pass_vtable = TRUE;
2216         }
2217
2218         if (mini_method_get_context (cmethod) &&
2219                 mini_method_get_context (cmethod)->method_inst) {
2220                 g_assert (!pass_vtable);
2221
2222                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2223                         pass_mrgctx = TRUE;
2224                 } else {
2225                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2226                                 pass_mrgctx = TRUE;
2227                 }
2228         }
2229
2230         if (out_pass_vtable)
2231                 *out_pass_vtable = pass_vtable;
2232         if (out_pass_mrgctx)
2233                 *out_pass_mrgctx = pass_mrgctx;
2234 }
2235
2236 inline static MonoCallInst *
2237 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2238                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2239 {
2240         MonoType *sig_ret;
2241         MonoCallInst *call;
2242 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2243         int i;
2244 #endif
2245
2246         if (cfg->llvm_only)
2247                 tail = FALSE;
2248
2249         if (tail) {
2250                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2251
2252                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2253         } else
2254                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2255
2256         call->args = args;
2257         call->signature = sig;
2258         call->rgctx_reg = rgctx;
2259         sig_ret = mini_get_underlying_type (sig->ret);
2260
2261         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2262
2263         if (tail) {
2264                 if (mini_type_is_vtype (sig_ret)) {
2265                         call->vret_var = cfg->vret_addr;
2266                         //g_assert_not_reached ();
2267                 }
2268         } else if (mini_type_is_vtype (sig_ret)) {
2269                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2270                 MonoInst *loada;
2271
2272                 temp->backend.is_pinvoke = sig->pinvoke;
2273
2274                 /*
2275                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2276                  * address of return value to increase optimization opportunities.
2277                  * Before vtype decomposition, the dreg of the call ins itself represents the
2278                  * fact the call modifies the return value. After decomposition, the call will
2279                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2280                  * will be transformed into an LDADDR.
2281                  */
2282                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2283                 loada->dreg = alloc_preg (cfg);
2284                 loada->inst_p0 = temp;
2285                 /* We reference the call too since call->dreg could change during optimization */
2286                 loada->inst_p1 = call;
2287                 MONO_ADD_INS (cfg->cbb, loada);
2288
2289                 call->inst.dreg = temp->dreg;
2290
2291                 call->vret_var = loada;
2292         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2293                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2294
2295 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2296         if (COMPILE_SOFT_FLOAT (cfg)) {
2297                 /*
2298                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2299                  * an icall, but that cannot be done during the call sequence since it would clobber
2300                  * the call registers + the stack. So we do it before emitting the call.
2301                  */
2302                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2303                         MonoType *t;
2304                         MonoInst *in = call->args [i];
2305
2306                         if (i >= sig->hasthis)
2307                                 t = sig->params [i - sig->hasthis];
2308                         else
2309                                 t = &mono_defaults.int_class->byval_arg;
2310                         t = mono_type_get_underlying_type (t);
2311
2312                         if (!t->byref && t->type == MONO_TYPE_R4) {
2313                                 MonoInst *iargs [1];
2314                                 MonoInst *conv;
2315
2316                                 iargs [0] = in;
2317                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2318
2319                                 /* The result will be in an int vreg */
2320                                 call->args [i] = conv;
2321                         }
2322                 }
2323         }
2324 #endif
2325
2326         call->need_unbox_trampoline = unbox_trampoline;
2327
2328 #ifdef ENABLE_LLVM
2329         if (COMPILE_LLVM (cfg))
2330                 mono_llvm_emit_call (cfg, call);
2331         else
2332                 mono_arch_emit_call (cfg, call);
2333 #else
2334         mono_arch_emit_call (cfg, call);
2335 #endif
2336
2337         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2338         cfg->flags |= MONO_CFG_HAS_CALLS;
2339
2340         return call;
2341 }
2342
2343 static void
2344 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2345 {
2346         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2347         cfg->uses_rgctx_reg = TRUE;
2348         call->rgctx_reg = TRUE;
2349 #ifdef ENABLE_LLVM
2350         call->rgctx_arg_reg = rgctx_reg;
2351 #endif
2352 }
2353
2354 MonoInst*
2355 mini_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2356 {
2357         MonoCallInst *call;
2358         MonoInst *ins;
2359         int rgctx_reg = -1;
2360         gboolean check_sp = FALSE;
2361
2362         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2363                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2364
2365                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2366                         check_sp = TRUE;
2367         }
2368
2369         if (rgctx_arg) {
2370                 rgctx_reg = mono_alloc_preg (cfg);
2371                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2372         }
2373
2374         if (check_sp) {
2375                 if (!cfg->stack_inbalance_var)
2376                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2377
2378                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2379                 ins->dreg = cfg->stack_inbalance_var->dreg;
2380                 MONO_ADD_INS (cfg->cbb, ins);
2381         }
2382
2383         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2384
2385         call->inst.sreg1 = addr->dreg;
2386
2387         if (imt_arg)
2388                 emit_imt_argument (cfg, call, NULL, imt_arg);
2389
2390         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2391
2392         if (check_sp) {
2393                 int sp_reg;
2394
2395                 sp_reg = mono_alloc_preg (cfg);
2396
2397                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2398                 ins->dreg = sp_reg;
2399                 MONO_ADD_INS (cfg->cbb, ins);
2400
2401                 /* Restore the stack so we don't crash when throwing the exception */
2402                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2403                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2404                 MONO_ADD_INS (cfg->cbb, ins);
2405
2406                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2407                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2408         }
2409
2410         if (rgctx_arg)
2411                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2412
2413         return (MonoInst*)call;
2414 }
2415
2416 static MonoInst*
2417 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2418
2419 static MonoInst*
2420 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2421                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2422 {
2423 #ifndef DISABLE_REMOTING
2424         gboolean might_be_remote = FALSE;
2425 #endif
2426         gboolean virtual_ = this_ins != NULL;
2427         gboolean enable_for_aot = TRUE;
2428         int context_used;
2429         MonoCallInst *call;
2430         MonoInst *call_target = NULL;
2431         int rgctx_reg = 0;
2432         gboolean need_unbox_trampoline;
2433
2434         if (!sig)
2435                 sig = mono_method_signature (method);
2436
2437         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2438                 g_assert_not_reached ();
2439
2440         if (rgctx_arg) {
2441                 rgctx_reg = mono_alloc_preg (cfg);
2442                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2443         }
2444
2445         if (method->string_ctor) {
2446                 /* Create the real signature */
2447                 /* FIXME: Cache these */
2448                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2449                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2450
2451                 sig = ctor_sig;
2452         }
2453
2454         context_used = mini_method_check_context_used (cfg, method);
2455
2456 #ifndef DISABLE_REMOTING
2457         might_be_remote = this_ins && sig->hasthis &&
2458                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2459                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2460
2461         if (might_be_remote && context_used) {
2462                 MonoInst *addr;
2463
2464                 g_assert (cfg->gshared);
2465
2466                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2467
2468                 return mini_emit_calli (cfg, sig, args, addr, NULL, NULL);
2469         }
2470 #endif
2471
2472         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2473                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2474
2475         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2476
2477         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2478
2479 #ifndef DISABLE_REMOTING
2480         if (might_be_remote)
2481                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2482         else
2483 #endif
2484                 call->method = method;
2485         call->inst.flags |= MONO_INST_HAS_METHOD;
2486         call->inst.inst_left = this_ins;
2487         call->tail_call = tail;
2488
2489         if (virtual_) {
2490                 int vtable_reg, slot_reg, this_reg;
2491                 int offset;
2492
2493                 this_reg = this_ins->dreg;
2494
2495                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2496                         MonoInst *dummy_use;
2497
2498                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2499
2500                         /* Make a call to delegate->invoke_impl */
2501                         call->inst.inst_basereg = this_reg;
2502                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2503                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2504
2505                         /* We must emit a dummy use here because the delegate trampoline will
2506                         replace the 'this' argument with the delegate target making this activation
2507                         no longer a root for the delegate.
2508                         This is an issue for delegates that target collectible code such as dynamic
2509                         methods of GC'able assemblies.
2510
2511                         For a test case look into #667921.
2512
2513                         FIXME: a dummy use is not the best way to do it as the local register allocator
2514                         will put it on a caller save register and spil it around the call.
2515                         Ideally, we would either put it on a callee save register or only do the store part.
2516                          */
2517                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2518
2519                         return (MonoInst*)call;
2520                 }
2521
2522                 if ((!cfg->compile_aot || enable_for_aot) &&
2523                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2524                          (MONO_METHOD_IS_FINAL (method) &&
2525                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2526                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2527                         /*
2528                          * the method is not virtual, we just need to ensure this is not null
2529                          * and then we can call the method directly.
2530                          */
2531 #ifndef DISABLE_REMOTING
2532                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2533                                 /*
2534                                  * The check above ensures method is not gshared, this is needed since
2535                                  * gshared methods can't have wrappers.
2536                                  */
2537                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2538                         }
2539 #endif
2540
2541                         if (!method->string_ctor)
2542                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2543
2544                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2545                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2546                         /*
2547                          * the method is virtual, but we can statically dispatch since either
2548                          * it's class or the method itself are sealed.
2549                          * But first we need to ensure it's not a null reference.
2550                          */
2551                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2552
2553                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2554                 } else if (call_target) {
2555                         vtable_reg = alloc_preg (cfg);
2556                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2557
2558                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2559                         call->inst.sreg1 = call_target->dreg;
2560                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2561                 } else {
2562                         vtable_reg = alloc_preg (cfg);
2563                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2564                         if (mono_class_is_interface (method->klass)) {
2565                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2566                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2567                                 slot_reg = vtable_reg;
2568                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2569                         } else {
2570                                 slot_reg = vtable_reg;
2571                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2572                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2573                                 if (imt_arg) {
2574                                         g_assert (mono_method_signature (method)->generic_param_count);
2575                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2576                                 }
2577                         }
2578
2579                         call->inst.sreg1 = slot_reg;
2580                         call->inst.inst_offset = offset;
2581                         call->is_virtual = TRUE;
2582                 }
2583         }
2584
2585         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2586
2587         if (rgctx_arg)
2588                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2589
2590         return (MonoInst*)call;
2591 }
2592
2593 MonoInst*
2594 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2595 {
2596         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2597 }
2598
2599 MonoInst*
2600 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2601                                            MonoInst **args)
2602 {
2603         MonoCallInst *call;
2604
2605         g_assert (sig);
2606
2607         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2608         call->fptr = func;
2609
2610         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2611
2612         return (MonoInst*)call;
2613 }
2614
2615 MonoInst*
2616 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2617 {
2618         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2619
2620         g_assert (info);
2621
2622         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2623 }
2624
2625 /*
2626  * mono_emit_abs_call:
2627  *
2628  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2629  */
2630 inline static MonoInst*
2631 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2632                                         MonoMethodSignature *sig, MonoInst **args)
2633 {
2634         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2635         MonoInst *ins;
2636
2637         /*
2638          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2639          * handle it.
2640          */
2641         if (cfg->abs_patches == NULL)
2642                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2643         g_hash_table_insert (cfg->abs_patches, ji, ji);
2644         ins = mono_emit_native_call (cfg, ji, sig, args);
2645         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2646         return ins;
2647 }
2648
2649 static MonoMethodSignature*
2650 sig_to_rgctx_sig (MonoMethodSignature *sig)
2651 {
2652         // FIXME: memory allocation
2653         MonoMethodSignature *res;
2654         int i;
2655
2656         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2657         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2658         res->param_count = sig->param_count + 1;
2659         for (i = 0; i < sig->param_count; ++i)
2660                 res->params [i] = sig->params [i];
2661         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2662         return res;
2663 }
2664
2665 /* Make an indirect call to FSIG passing an additional argument */
2666 static MonoInst*
2667 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2668 {
2669         MonoMethodSignature *csig;
2670         MonoInst *args_buf [16];
2671         MonoInst **args;
2672         int i, pindex, tmp_reg;
2673
2674         /* Make a call with an rgctx/extra arg */
2675         if (fsig->param_count + 2 < 16)
2676                 args = args_buf;
2677         else
2678                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2679         pindex = 0;
2680         if (fsig->hasthis)
2681                 args [pindex ++] = orig_args [0];
2682         for (i = 0; i < fsig->param_count; ++i)
2683                 args [pindex ++] = orig_args [fsig->hasthis + i];
2684         tmp_reg = alloc_preg (cfg);
2685         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2686         csig = sig_to_rgctx_sig (fsig);
2687         return mini_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2688 }
2689
2690 /* Emit an indirect call to the function descriptor ADDR */
2691 static MonoInst*
2692 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2693 {
2694         int addr_reg, arg_reg;
2695         MonoInst *call_target;
2696
2697         g_assert (cfg->llvm_only);
2698
2699         /*
2700          * addr points to a <addr, arg> pair, load both of them, and
2701          * make a call to addr, passing arg as an extra arg.
2702          */
2703         addr_reg = alloc_preg (cfg);
2704         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2705         arg_reg = alloc_preg (cfg);
2706         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2707
2708         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2709 }
2710
2711 static gboolean
2712 direct_icalls_enabled (MonoCompile *cfg)
2713 {
2714         return FALSE;
2715
2716         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2717 #ifdef TARGET_AMD64
2718         if (cfg->compile_llvm && !cfg->llvm_only)
2719                 return FALSE;
2720 #endif
2721         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2722                 return FALSE;
2723         return TRUE;
2724 }
2725
2726 MonoInst*
2727 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2728 {
2729         /*
2730          * Call the jit icall without a wrapper if possible.
2731          * The wrapper is needed for the following reasons:
2732          * - to handle exceptions thrown using mono_raise_exceptions () from the
2733          *   icall function. The EH code needs the lmf frame pushed by the
2734          *   wrapper to be able to unwind back to managed code.
2735          * - to be able to do stack walks for asynchronously suspended
2736          *   threads when debugging.
2737          */
2738         if (info->no_raise && direct_icalls_enabled (cfg)) {
2739                 char *name;
2740                 int costs;
2741
2742                 if (!info->wrapper_method) {
2743                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2744                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2745                         g_free (name);
2746                         mono_memory_barrier ();
2747                 }
2748
2749                 /*
2750                  * Inline the wrapper method, which is basically a call to the C icall, and
2751                  * an exception check.
2752                  */
2753                 costs = inline_method (cfg, info->wrapper_method, NULL,
2754                                                            args, NULL, il_offset, TRUE);
2755                 g_assert (costs > 0);
2756                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2757
2758                 return args [0];
2759         } else {
2760                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2761         }
2762 }
2763
2764 static MonoInst*
2765 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2766 {
2767         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2768                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2769                         int widen_op = -1;
2770
2771                         /*
2772                          * Native code might return non register sized integers
2773                          * without initializing the upper bits.
2774                          */
2775                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2776                         case OP_LOADI1_MEMBASE:
2777                                 widen_op = OP_ICONV_TO_I1;
2778                                 break;
2779                         case OP_LOADU1_MEMBASE:
2780                                 widen_op = OP_ICONV_TO_U1;
2781                                 break;
2782                         case OP_LOADI2_MEMBASE:
2783                                 widen_op = OP_ICONV_TO_I2;
2784                                 break;
2785                         case OP_LOADU2_MEMBASE:
2786                                 widen_op = OP_ICONV_TO_U2;
2787                                 break;
2788                         default:
2789                                 break;
2790                         }
2791
2792                         if (widen_op != -1) {
2793                                 int dreg = alloc_preg (cfg);
2794                                 MonoInst *widen;
2795
2796                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2797                                 widen->type = ins->type;
2798                                 ins = widen;
2799                         }
2800                 }
2801         }
2802
2803         return ins;
2804 }
2805
2806
2807 static void
2808 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2809 {
2810         MonoInst *args [16];
2811
2812         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2813         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2814
2815         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2816 }
2817
2818 MonoMethod*
2819 mini_get_memcpy_method (void)
2820 {
2821         static MonoMethod *memcpy_method = NULL;
2822         if (!memcpy_method) {
2823                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2824                 if (!memcpy_method)
2825                         g_error ("Old corlib found. Install a new one");
2826         }
2827         return memcpy_method;
2828 }
2829
2830 static void
2831 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
2832 {
2833         MonoClassField *field;
2834         gpointer iter = NULL;
2835
2836         while ((field = mono_class_get_fields (klass, &iter))) {
2837                 int foffset;
2838
2839                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2840                         continue;
2841                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
2842                 if (mini_type_is_reference (mono_field_get_type (field))) {
2843                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
2844                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
2845                 } else {
2846                         MonoClass *field_class = mono_class_from_mono_type (field->type);
2847                         if (field_class->has_references)
2848                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
2849                 }
2850         }
2851 }
2852
2853 void
2854 mini_emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2855 {
2856         int card_table_shift_bits;
2857         gpointer card_table_mask;
2858         guint8 *card_table;
2859         MonoInst *dummy_use;
2860         int nursery_shift_bits;
2861         size_t nursery_size;
2862
2863         if (!cfg->gen_write_barriers)
2864                 return;
2865
2866         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2867
2868         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2869
2870         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
2871                 MonoInst *wbarrier;
2872
2873                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2874                 wbarrier->sreg1 = ptr->dreg;
2875                 wbarrier->sreg2 = value->dreg;
2876                 MONO_ADD_INS (cfg->cbb, wbarrier);
2877         } else if (card_table) {
2878                 int offset_reg = alloc_preg (cfg);
2879                 int card_reg;
2880                 MonoInst *ins;
2881
2882                 /*
2883                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
2884                  * collector case, so, for the serial collector, it might slightly slow down nursery
2885                  * collections. We also expect that the host system and the target system have the same card
2886                  * table configuration, which is the case if they have the same pointer size.
2887                  */
2888
2889                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2890                 if (card_table_mask)
2891                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2892
2893                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2894                  * IMM's larger than 32bits.
2895                  */
2896                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
2897                 card_reg = ins->dreg;
2898
2899                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2900                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2901         } else {
2902                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2903                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2904         }
2905
2906         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2907 }
2908
2909 gboolean
2910 mini_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
2911 {
2912         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
2913         unsigned need_wb = 0;
2914
2915         if (align == 0)
2916                 align = 4;
2917
2918         /*types with references can't have alignment smaller than sizeof(void*) */
2919         if (align < SIZEOF_VOID_P)
2920                 return FALSE;
2921
2922         if (size > 5 * SIZEOF_VOID_P)
2923                 return FALSE;
2924
2925         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
2926
2927         destreg = iargs [0]->dreg;
2928         srcreg = iargs [1]->dreg;
2929         offset = 0;
2930
2931         dest_ptr_reg = alloc_preg (cfg);
2932         tmp_reg = alloc_preg (cfg);
2933
2934         /*tmp = dreg*/
2935         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
2936
2937         while (size >= SIZEOF_VOID_P) {
2938                 MonoInst *load_inst;
2939                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
2940                 load_inst->dreg = tmp_reg;
2941                 load_inst->inst_basereg = srcreg;
2942                 load_inst->inst_offset = offset;
2943                 MONO_ADD_INS (cfg->cbb, load_inst);
2944
2945                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
2946
2947                 if (need_wb & 0x1)
2948                         mini_emit_write_barrier (cfg, iargs [0], load_inst);
2949
2950                 offset += SIZEOF_VOID_P;
2951                 size -= SIZEOF_VOID_P;
2952                 need_wb >>= 1;
2953
2954                 /*tmp += sizeof (void*)*/
2955                 if (size >= SIZEOF_VOID_P) {
2956                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
2957                         MONO_ADD_INS (cfg->cbb, iargs [0]);
2958                 }
2959         }
2960
2961         /* Those cannot be references since size < sizeof (void*) */
2962         while (size >= 4) {
2963                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
2964                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
2965                 offset += 4;
2966                 size -= 4;
2967         }
2968
2969         while (size >= 2) {
2970                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
2971                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
2972                 offset += 2;
2973                 size -= 2;
2974         }
2975
2976         while (size >= 1) {
2977                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
2978                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
2979                 offset += 1;
2980                 size -= 1;
2981         }
2982
2983         return TRUE;
2984 }
2985
2986 /*
2987  * Emit code to copy a valuetype of type @klass whose address is stored in
2988  * @src->dreg to memory whose address is stored at @dest->dreg.
2989  */
2990 void
2991 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
2992 {
2993         MonoInst *iargs [4];
2994         int n;
2995         guint32 align = 0;
2996         MonoMethod *memcpy_method;
2997         MonoInst *size_ins = NULL;
2998         MonoInst *memcpy_ins = NULL;
2999
3000         g_assert (klass);
3001         if (cfg->gshared)
3002                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3003
3004         /*
3005          * This check breaks with spilled vars... need to handle it during verification anyway.
3006          * g_assert (klass && klass == src->klass && klass == dest->klass);
3007          */
3008
3009         if (mini_is_gsharedvt_klass (klass)) {
3010                 g_assert (!native);
3011                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3012                 memcpy_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3013         }
3014
3015         if (native)
3016                 n = mono_class_native_size (klass, &align);
3017         else
3018                 n = mono_class_value_size (klass, &align);
3019
3020         if (!align)
3021                 align = SIZEOF_VOID_P;
3022         /* if native is true there should be no references in the struct */
3023         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3024                 /* Avoid barriers when storing to the stack */
3025                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3026                           (dest->opcode == OP_LDADDR))) {
3027                         int context_used;
3028
3029                         iargs [0] = dest;
3030                         iargs [1] = src;
3031
3032                         context_used = mini_class_check_context_used (cfg, klass);
3033
3034                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3035                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mini_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3036                                 return;
3037                         } else if (size_ins || align < SIZEOF_VOID_P) {
3038                                 if (context_used) {
3039                                         iargs [2] = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3040                                 }  else {
3041                                         iargs [2] = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3042                                         if (!cfg->compile_aot)
3043                                                 mono_class_compute_gc_descriptor (klass);
3044                                 }
3045                                 if (size_ins)
3046                                         mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3047                                 else
3048                                         mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3049                         } else {
3050                                 /* We don't unroll more than 5 stores to avoid code bloat. */
3051                                 /*This is harmless and simplify mono_gc_get_range_copy_func */
3052                                 n += (SIZEOF_VOID_P - 1);
3053                                 n &= ~(SIZEOF_VOID_P - 1);
3054
3055                                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3056                                 mono_emit_jit_icall (cfg, mono_gc_get_range_copy_func (), iargs);
3057                         }
3058                 }
3059         }
3060
3061         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3062                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3063                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3064         } else {
3065                 iargs [0] = dest;
3066                 iargs [1] = src;
3067                 if (size_ins)
3068                         iargs [2] = size_ins;
3069                 else
3070                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3071
3072                 memcpy_method = mini_get_memcpy_method ();
3073                 if (memcpy_ins)
3074                         mini_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3075                 else
3076                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3077         }
3078 }
3079
3080 MonoMethod*
3081 mini_get_memset_method (void)
3082 {
3083         static MonoMethod *memset_method = NULL;
3084         if (!memset_method) {
3085                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3086                 if (!memset_method)
3087                         g_error ("Old corlib found. Install a new one");
3088         }
3089         return memset_method;
3090 }
3091
3092 void
3093 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3094 {
3095         MonoInst *iargs [3];
3096         int n;
3097         guint32 align;
3098         MonoMethod *memset_method;
3099         MonoInst *size_ins = NULL;
3100         MonoInst *bzero_ins = NULL;
3101         static MonoMethod *bzero_method;
3102
3103         /* FIXME: Optimize this for the case when dest is an LDADDR */
3104         mono_class_init (klass);
3105         if (mini_is_gsharedvt_klass (klass)) {
3106                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3107                 bzero_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3108                 if (!bzero_method)
3109                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3110                 g_assert (bzero_method);
3111                 iargs [0] = dest;
3112                 iargs [1] = size_ins;
3113                 mini_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3114                 return;
3115         }
3116
3117         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3118
3119         n = mono_class_value_size (klass, &align);
3120
3121         if (n <= sizeof (gpointer) * 8) {
3122                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3123         }
3124         else {
3125                 memset_method = mini_get_memset_method ();
3126                 iargs [0] = dest;
3127                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3128                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3129                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3130         }
3131 }
3132
3133 /*
3134  * emit_get_rgctx:
3135  *
3136  *   Emit IR to return either the this pointer for instance method,
3137  * or the mrgctx for static methods.
3138  */
3139 static MonoInst*
3140 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3141 {
3142         MonoInst *this_ins = NULL;
3143
3144         g_assert (cfg->gshared);
3145
3146         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3147                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3148                 !method->klass->valuetype)
3149                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
3150
3151         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3152                 MonoInst *mrgctx_loc, *mrgctx_var;
3153
3154                 g_assert (!this_ins);
3155                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3156
3157                 mrgctx_loc = mono_get_vtable_var (cfg);
3158                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3159
3160                 return mrgctx_var;
3161         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
3162                 MonoInst *mrgctx_loc, *mrgctx_var;
3163
3164                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
3165                 mrgctx_loc = mono_get_vtable_var (cfg);
3166                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3167
3168                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
3169
3170                 return mrgctx_var;
3171         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3172                 MonoInst *vtable_loc, *vtable_var;
3173
3174                 g_assert (!this_ins);
3175
3176                 vtable_loc = mono_get_vtable_var (cfg);
3177                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3178
3179                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3180                         MonoInst *mrgctx_var = vtable_var;
3181                         int vtable_reg;
3182
3183                         vtable_reg = alloc_preg (cfg);
3184                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3185                         vtable_var->type = STACK_PTR;
3186                 }
3187
3188                 return vtable_var;
3189         } else {
3190                 MonoInst *ins;
3191                 int vtable_reg;
3192
3193                 vtable_reg = alloc_preg (cfg);
3194                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3195                 return ins;
3196         }
3197 }
3198
3199 static MonoJumpInfoRgctxEntry *
3200 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3201 {
3202         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3203         res->method = method;
3204         res->in_mrgctx = in_mrgctx;
3205         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3206         res->data->type = patch_type;
3207         res->data->data.target = patch_data;
3208         res->info_type = info_type;
3209
3210         return res;
3211 }
3212
3213 static inline MonoInst*
3214 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3215 {
3216         MonoInst *args [16];
3217         MonoInst *call;
3218
3219         // FIXME: No fastpath since the slot is not a compile time constant
3220         args [0] = rgctx;
3221         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3222         if (entry->in_mrgctx)
3223                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3224         else
3225                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3226         return call;
3227 #if 0
3228         /*
3229          * FIXME: This can be called during decompose, which is a problem since it creates
3230          * new bblocks.
3231          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3232          */
3233         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3234         gboolean mrgctx;
3235         MonoBasicBlock *is_null_bb, *end_bb;
3236         MonoInst *res, *ins, *call;
3237         MonoInst *args[16];
3238
3239         slot = mini_get_rgctx_entry_slot (entry);
3240
3241         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3242         index = MONO_RGCTX_SLOT_INDEX (slot);
3243         if (mrgctx)
3244                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3245         for (depth = 0; ; ++depth) {
3246                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3247
3248                 if (index < size - 1)
3249                         break;
3250                 index -= size - 1;
3251         }
3252
3253         NEW_BBLOCK (cfg, end_bb);
3254         NEW_BBLOCK (cfg, is_null_bb);
3255
3256         if (mrgctx) {
3257                 rgctx_reg = rgctx->dreg;
3258         } else {
3259                 rgctx_reg = alloc_preg (cfg);
3260
3261                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3262                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3263                 NEW_BBLOCK (cfg, is_null_bb);
3264
3265                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3266                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3267         }
3268
3269         for (i = 0; i < depth; ++i) {
3270                 int array_reg = alloc_preg (cfg);
3271
3272                 /* load ptr to next array */
3273                 if (mrgctx && i == 0)
3274                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3275                 else
3276                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3277                 rgctx_reg = array_reg;
3278                 /* is the ptr null? */
3279                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3280                 /* if yes, jump to actual trampoline */
3281                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3282         }
3283
3284         /* fetch slot */
3285         val_reg = alloc_preg (cfg);
3286         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3287         /* is the slot null? */
3288         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3289         /* if yes, jump to actual trampoline */
3290         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3291
3292         /* Fastpath */
3293         res_reg = alloc_preg (cfg);
3294         MONO_INST_NEW (cfg, ins, OP_MOVE);
3295         ins->dreg = res_reg;
3296         ins->sreg1 = val_reg;
3297         MONO_ADD_INS (cfg->cbb, ins);
3298         res = ins;
3299         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3300
3301         /* Slowpath */
3302         MONO_START_BB (cfg, is_null_bb);
3303         args [0] = rgctx;
3304         EMIT_NEW_ICONST (cfg, args [1], index);
3305         if (mrgctx)
3306                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3307         else
3308                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3309         MONO_INST_NEW (cfg, ins, OP_MOVE);
3310         ins->dreg = res_reg;
3311         ins->sreg1 = call->dreg;
3312         MONO_ADD_INS (cfg->cbb, ins);
3313         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3314
3315         MONO_START_BB (cfg, end_bb);
3316
3317         return res;
3318 #endif
3319 }
3320
3321 /*
3322  * emit_rgctx_fetch:
3323  *
3324  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3325  * given by RGCTX.
3326  */
3327 static inline MonoInst*
3328 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3329 {
3330         if (cfg->llvm_only)
3331                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3332         else
3333                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3334 }
3335
3336 MonoInst*
3337 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3338                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3339 {
3340         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3341         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3342
3343         return emit_rgctx_fetch (cfg, rgctx, entry);
3344 }
3345
3346 static MonoInst*
3347 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3348                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3349 {
3350         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3351         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3352
3353         return emit_rgctx_fetch (cfg, rgctx, entry);
3354 }
3355
3356 static MonoInst*
3357 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3358                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3359 {
3360         MonoJumpInfoGSharedVtCall *call_info;
3361         MonoJumpInfoRgctxEntry *entry;
3362         MonoInst *rgctx;
3363
3364         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3365         call_info->sig = sig;
3366         call_info->method = cmethod;
3367
3368         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3369         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3370
3371         return emit_rgctx_fetch (cfg, rgctx, entry);
3372 }
3373
3374 /*
3375  * emit_get_rgctx_virt_method:
3376  *
3377  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3378  */
3379 static MonoInst*
3380 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3381                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3382 {
3383         MonoJumpInfoVirtMethod *info;
3384         MonoJumpInfoRgctxEntry *entry;
3385         MonoInst *rgctx;
3386
3387         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3388         info->klass = klass;
3389         info->method = virt_method;
3390
3391         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3392         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3393
3394         return emit_rgctx_fetch (cfg, rgctx, entry);
3395 }
3396
3397 static MonoInst*
3398 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3399                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3400 {
3401         MonoJumpInfoRgctxEntry *entry;
3402         MonoInst *rgctx;
3403
3404         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3405         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3406
3407         return emit_rgctx_fetch (cfg, rgctx, entry);
3408 }
3409
3410 /*
3411  * emit_get_rgctx_method:
3412  *
3413  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3414  * normal constants, else emit a load from the rgctx.
3415  */
3416 static MonoInst*
3417 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3418                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3419 {
3420         if (!context_used) {
3421                 MonoInst *ins;
3422
3423                 switch (rgctx_type) {
3424                 case MONO_RGCTX_INFO_METHOD:
3425                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3426                         return ins;
3427                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3428                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3429                         return ins;
3430                 default:
3431                         g_assert_not_reached ();
3432                 }
3433         } else {
3434                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3435                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3436
3437                 return emit_rgctx_fetch (cfg, rgctx, entry);
3438         }
3439 }
3440
3441 static MonoInst*
3442 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3443                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3444 {
3445         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3446         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3447
3448         return emit_rgctx_fetch (cfg, rgctx, entry);
3449 }
3450
3451 static int
3452 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3453 {
3454         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3455         MonoRuntimeGenericContextInfoTemplate *template_;
3456         int i, idx;
3457
3458         g_assert (info);
3459
3460         for (i = 0; i < info->num_entries; ++i) {
3461                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3462
3463                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3464                         return i;
3465         }
3466
3467         if (info->num_entries == info->count_entries) {
3468                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3469                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3470
3471                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3472
3473                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3474                 info->entries = new_entries;
3475                 info->count_entries = new_count_entries;
3476         }
3477
3478         idx = info->num_entries;
3479         template_ = &info->entries [idx];
3480         template_->info_type = rgctx_type;
3481         template_->data = data;
3482
3483         info->num_entries ++;
3484
3485         return idx;
3486 }
3487
3488 /*
3489  * emit_get_gsharedvt_info:
3490  *
3491  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3492  */
3493 static MonoInst*
3494 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3495 {
3496         MonoInst *ins;
3497         int idx, dreg;
3498
3499         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3500         /* Load info->entries [idx] */
3501         dreg = alloc_preg (cfg);
3502         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3503
3504         return ins;
3505 }
3506
3507 MonoInst*
3508 mini_emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3509 {
3510         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3511 }
3512
3513 /*
3514  * On return the caller must check @klass for load errors.
3515  */
3516 static void
3517 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3518 {
3519         MonoInst *vtable_arg;
3520         int context_used;
3521
3522         context_used = mini_class_check_context_used (cfg, klass);
3523
3524         if (context_used) {
3525                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3526                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3527         } else {
3528                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3529
3530                 if (!vtable)
3531                         return;
3532                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3533         }
3534
3535         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3536                 MonoInst *ins;
3537
3538                 /*
3539                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3540                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3541                  */
3542                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3543                 ins->sreg1 = vtable_arg->dreg;
3544                 MONO_ADD_INS (cfg->cbb, ins);
3545         } else {
3546                 int inited_reg;
3547                 MonoBasicBlock *inited_bb;
3548                 MonoInst *args [16];
3549
3550                 inited_reg = alloc_ireg (cfg);
3551
3552                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3553
3554                 NEW_BBLOCK (cfg, inited_bb);
3555
3556                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3557                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3558
3559                 args [0] = vtable_arg;
3560                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3561
3562                 MONO_START_BB (cfg, inited_bb);
3563         }
3564 }
3565
3566 static void
3567 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3568 {
3569         MonoInst *ins;
3570
3571         if (cfg->gen_seq_points && cfg->method == method) {
3572                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3573                 if (nonempty_stack)
3574                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3575                 MONO_ADD_INS (cfg->cbb, ins);
3576         }
3577 }
3578
3579 void
3580 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3581 {
3582         if (mini_get_debug_options ()->better_cast_details) {
3583                 int vtable_reg = alloc_preg (cfg);
3584                 int klass_reg = alloc_preg (cfg);
3585                 MonoBasicBlock *is_null_bb = NULL;
3586                 MonoInst *tls_get;
3587                 int to_klass_reg, context_used;
3588
3589                 if (null_check) {
3590                         NEW_BBLOCK (cfg, is_null_bb);
3591
3592                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3593                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3594                 }
3595
3596                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3597                 if (!tls_get) {
3598                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3599                         exit (1);
3600                 }
3601
3602                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3603                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3604
3605                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3606
3607                 context_used = mini_class_check_context_used (cfg, klass);
3608                 if (context_used) {
3609                         MonoInst *class_ins;
3610
3611                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3612                         to_klass_reg = class_ins->dreg;
3613                 } else {
3614                         to_klass_reg = alloc_preg (cfg);
3615                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3616                 }
3617                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3618
3619                 if (null_check)
3620                         MONO_START_BB (cfg, is_null_bb);
3621         }
3622 }
3623
3624 void
3625 mini_reset_cast_details (MonoCompile *cfg)
3626 {
3627         /* Reset the variables holding the cast details */
3628         if (mini_get_debug_options ()->better_cast_details) {
3629                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3630                 /* It is enough to reset the from field */
3631                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3632         }
3633 }
3634
3635 /*
3636  * On return the caller must check @array_class for load errors
3637  */
3638 static void
3639 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3640 {
3641         int vtable_reg = alloc_preg (cfg);
3642         int context_used;
3643
3644         context_used = mini_class_check_context_used (cfg, array_class);
3645
3646         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3647
3648         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3649
3650         if (cfg->opt & MONO_OPT_SHARED) {
3651                 int class_reg = alloc_preg (cfg);
3652                 MonoInst *ins;
3653
3654                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3655                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3656                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3657         } else if (context_used) {
3658                 MonoInst *vtable_ins;
3659
3660                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3661                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3662         } else {
3663                 if (cfg->compile_aot) {
3664                         int vt_reg;
3665                         MonoVTable *vtable;
3666
3667                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3668                                 return;
3669                         vt_reg = alloc_preg (cfg);
3670                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3671                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3672                 } else {
3673                         MonoVTable *vtable;
3674                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3675                                 return;
3676                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3677                 }
3678         }
3679
3680         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3681
3682         mini_reset_cast_details (cfg);
3683 }
3684
3685 /**
3686  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3687  * generic code is generated.
3688  */
3689 static MonoInst*
3690 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3691 {
3692         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3693
3694         if (context_used) {
3695                 MonoInst *rgctx, *addr;
3696
3697                 /* FIXME: What if the class is shared?  We might not
3698                    have to get the address of the method from the
3699                    RGCTX. */
3700                 addr = emit_get_rgctx_method (cfg, context_used, method,
3701                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3702                 if (cfg->llvm_only) {
3703                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3704                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3705                 } else {
3706                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3707
3708                         return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3709                 }
3710         } else {
3711                 gboolean pass_vtable, pass_mrgctx;
3712                 MonoInst *rgctx_arg = NULL;
3713
3714                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3715                 g_assert (!pass_mrgctx);
3716
3717                 if (pass_vtable) {
3718                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3719
3720                         g_assert (vtable);
3721                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3722                 }
3723
3724                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3725         }
3726 }
3727
3728 static MonoInst*
3729 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3730 {
3731         MonoInst *add;
3732         int obj_reg;
3733         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3734         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3735         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3736         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3737
3738         obj_reg = sp [0]->dreg;
3739         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3740         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3741
3742         /* FIXME: generics */
3743         g_assert (klass->rank == 0);
3744
3745         // Check rank == 0
3746         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3747         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3748
3749         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3750         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3751
3752         if (context_used) {
3753                 MonoInst *element_class;
3754
3755                 /* This assertion is from the unboxcast insn */
3756                 g_assert (klass->rank == 0);
3757
3758                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3759                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3760
3761                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3762                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3763         } else {
3764                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3765                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3766                 mini_reset_cast_details (cfg);
3767         }
3768
3769         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3770         MONO_ADD_INS (cfg->cbb, add);
3771         add->type = STACK_MP;
3772         add->klass = klass;
3773
3774         return add;
3775 }
3776
3777 static MonoInst*
3778 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3779 {
3780         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3781         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3782         MonoInst *ins;
3783         int dreg, addr_reg;
3784
3785         klass_inst = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3786
3787         /* obj */
3788         args [0] = obj;
3789
3790         /* klass */
3791         args [1] = klass_inst;
3792
3793         /* CASTCLASS */
3794         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3795
3796         NEW_BBLOCK (cfg, is_ref_bb);
3797         NEW_BBLOCK (cfg, is_nullable_bb);
3798         NEW_BBLOCK (cfg, end_bb);
3799         is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3800         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3801         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3802
3803         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3804         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3805
3806         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3807         addr_reg = alloc_dreg (cfg, STACK_MP);
3808
3809         /* Non-ref case */
3810         /* UNBOX */
3811         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3812         MONO_ADD_INS (cfg->cbb, addr);
3813
3814         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3815
3816         /* Ref case */
3817         MONO_START_BB (cfg, is_ref_bb);
3818
3819         /* Save the ref to a temporary */
3820         dreg = alloc_ireg (cfg);
3821         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3822         addr->dreg = addr_reg;
3823         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3824         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3825
3826         /* Nullable case */
3827         MONO_START_BB (cfg, is_nullable_bb);
3828
3829         {
3830                 MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3831                 MonoInst *unbox_call;
3832                 MonoMethodSignature *unbox_sig;
3833
3834                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3835                 unbox_sig->ret = &klass->byval_arg;
3836                 unbox_sig->param_count = 1;
3837                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3838
3839                 if (cfg->llvm_only)
3840                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3841                 else
3842                         unbox_call = mini_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3843
3844                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3845                 addr->dreg = addr_reg;
3846         }
3847
3848         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3849
3850         /* End */
3851         MONO_START_BB (cfg, end_bb);
3852
3853         /* LDOBJ */
3854         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3855
3856         return ins;
3857 }
3858
3859 /*
3860  * Returns NULL and set the cfg exception on error.
3861  */
3862 static MonoInst*
3863 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3864 {
3865         MonoInst *iargs [2];
3866         void *alloc_ftn;
3867
3868         if (context_used) {
3869                 MonoInst *data;
3870                 MonoRgctxInfoType rgctx_info;
3871                 MonoInst *iargs [2];
3872                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
3873
3874                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
3875
3876                 if (cfg->opt & MONO_OPT_SHARED)
3877                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3878                 else
3879                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3880                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3881
3882                 if (cfg->opt & MONO_OPT_SHARED) {
3883                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3884                         iargs [1] = data;
3885                         alloc_ftn = ves_icall_object_new;
3886                 } else {
3887                         iargs [0] = data;
3888                         alloc_ftn = ves_icall_object_new_specific;
3889                 }
3890
3891                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
3892                         if (known_instance_size) {
3893                                 int size = mono_class_instance_size (klass);
3894                                 if (size < sizeof (MonoObject))
3895                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3896
3897                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
3898                         }
3899                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3900                 }
3901
3902                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3903         }
3904
3905         if (cfg->opt & MONO_OPT_SHARED) {
3906                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3907                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3908
3909                 alloc_ftn = ves_icall_object_new;
3910         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
3911                 /* This happens often in argument checking code, eg. throw new FooException... */
3912                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3913                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3914                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
3915         } else {
3916                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3917                 MonoMethod *managed_alloc = NULL;
3918                 gboolean pass_lw;
3919
3920                 if (!vtable) {
3921                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3922                         cfg->exception_ptr = klass;
3923                         return NULL;
3924                 }
3925
3926                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
3927
3928                 if (managed_alloc) {
3929                         int size = mono_class_instance_size (klass);
3930                         if (size < sizeof (MonoObject))
3931                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3932
3933                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3934                         EMIT_NEW_ICONST (cfg, iargs [1], size);
3935                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3936                 }
3937                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
3938                 if (pass_lw) {
3939                         guint32 lw = vtable->klass->instance_size;
3940                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
3941                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
3942                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
3943                 }
3944                 else {
3945                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3946                 }
3947         }
3948
3949         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3950 }
3951
3952 /*
3953  * Returns NULL and set the cfg exception on error.
3954  */
3955 static MonoInst*
3956 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3957 {
3958         MonoInst *alloc, *ins;
3959
3960         if (mono_class_is_nullable (klass)) {
3961                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3962
3963                 if (context_used) {
3964                         if (cfg->llvm_only && cfg->gsharedvt) {
3965                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3966                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3967                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3968                         } else {
3969                                 /* FIXME: What if the class is shared?  We might not
3970                                    have to get the method address from the RGCTX. */
3971                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3972                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3973                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3974
3975                                 return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3976                         }
3977                 } else {
3978                         gboolean pass_vtable, pass_mrgctx;
3979                         MonoInst *rgctx_arg = NULL;
3980
3981                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3982                         g_assert (!pass_mrgctx);
3983
3984                         if (pass_vtable) {
3985                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3986
3987                                 g_assert (vtable);
3988                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3989                         }
3990
3991                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3992                 }
3993         }
3994
3995         if (mini_is_gsharedvt_klass (klass)) {
3996                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3997                 MonoInst *res, *is_ref, *src_var, *addr;
3998                 int dreg;
3999
4000                 dreg = alloc_ireg (cfg);
4001
4002                 NEW_BBLOCK (cfg, is_ref_bb);
4003                 NEW_BBLOCK (cfg, is_nullable_bb);
4004                 NEW_BBLOCK (cfg, end_bb);
4005                 is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4006                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4007                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4008
4009                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4010                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4011
4012                 /* Non-ref case */
4013                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4014                 if (!alloc)
4015                         return NULL;
4016                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4017                 ins->opcode = OP_STOREV_MEMBASE;
4018
4019                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4020                 res->type = STACK_OBJ;
4021                 res->klass = klass;
4022                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4023
4024                 /* Ref case */
4025                 MONO_START_BB (cfg, is_ref_bb);
4026
4027                 /* val is a vtype, so has to load the value manually */
4028                 src_var = get_vreg_to_inst (cfg, val->dreg);
4029                 if (!src_var)
4030                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4031                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4032                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4033                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4034
4035                 /* Nullable case */
4036                 MONO_START_BB (cfg, is_nullable_bb);
4037
4038                 {
4039                         MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass,
4040                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4041                         MonoInst *box_call;
4042                         MonoMethodSignature *box_sig;
4043
4044                         /*
4045                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4046                          * construct that method at JIT time, so have to do things by hand.
4047                          */
4048                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4049                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4050                         box_sig->param_count = 1;
4051                         box_sig->params [0] = &klass->byval_arg;
4052
4053                         if (cfg->llvm_only)
4054                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4055                         else
4056                                 box_call = mini_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4057                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4058                         res->type = STACK_OBJ;
4059                         res->klass = klass;
4060                 }
4061
4062                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4063
4064                 MONO_START_BB (cfg, end_bb);
4065
4066                 return res;
4067         } else {
4068                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4069                 if (!alloc)
4070                         return NULL;
4071
4072                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4073                 return alloc;
4074         }
4075 }
4076
4077 static GHashTable* direct_icall_type_hash;
4078
4079 static gboolean
4080 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4081 {
4082         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4083         if (!direct_icalls_enabled (cfg))
4084                 return FALSE;
4085
4086         /*
4087          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4088          * Whitelist a few icalls for now.
4089          */
4090         if (!direct_icall_type_hash) {
4091                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4092
4093                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4094                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4095                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4096                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4097                 mono_memory_barrier ();
4098                 direct_icall_type_hash = h;
4099         }
4100
4101         if (cmethod->klass == mono_defaults.math_class)
4102                 return TRUE;
4103         /* No locking needed */
4104         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4105                 return TRUE;
4106         return FALSE;
4107 }
4108
4109 static gboolean
4110 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
4111 {
4112         if (cmethod->klass == mono_defaults.systemtype_class) {
4113                 if (!strcmp (cmethod->name, "GetType"))
4114                         return TRUE;
4115         }
4116         return FALSE;
4117 }
4118
4119 static G_GNUC_UNUSED MonoInst*
4120 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4121 {
4122         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4123         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4124         gboolean is_i4;
4125
4126         switch (enum_type->type) {
4127         case MONO_TYPE_I8:
4128         case MONO_TYPE_U8:
4129 #if SIZEOF_REGISTER == 8
4130         case MONO_TYPE_I:
4131         case MONO_TYPE_U:
4132 #endif
4133                 is_i4 = FALSE;
4134                 break;
4135         default:
4136                 is_i4 = TRUE;
4137                 break;
4138         }
4139
4140         {
4141                 MonoInst *load, *and_, *cmp, *ceq;
4142                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4143                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4144                 int dest_reg = alloc_ireg (cfg);
4145
4146                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4147                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4148                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4149                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4150
4151                 ceq->type = STACK_I4;
4152
4153                 if (!is_i4) {
4154                         load = mono_decompose_opcode (cfg, load);
4155                         and_ = mono_decompose_opcode (cfg, and_);
4156                         cmp = mono_decompose_opcode (cfg, cmp);
4157                         ceq = mono_decompose_opcode (cfg, ceq);
4158                 }
4159
4160                 return ceq;
4161         }
4162 }
4163
4164 /*
4165  * Returns NULL and set the cfg exception on error.
4166  */
4167 static G_GNUC_UNUSED MonoInst*
4168 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
4169 {
4170         MonoInst *ptr;
4171         int dreg;
4172         gpointer trampoline;
4173         MonoInst *obj, *method_ins, *tramp_ins;
4174         MonoDomain *domain;
4175         guint8 **code_slot;
4176
4177         if (virtual_ && !cfg->llvm_only) {
4178                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
4179                 g_assert (invoke);
4180
4181                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
4182                         return NULL;
4183         }
4184
4185         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
4186         if (!obj)
4187                 return NULL;
4188
4189         /* Inline the contents of mono_delegate_ctor */
4190
4191         /* Set target field */
4192         /* Optimize away setting of NULL target */
4193         if (!MONO_INS_IS_PCONST_NULL (target)) {
4194                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4195                 if (cfg->gen_write_barriers) {
4196                         dreg = alloc_preg (cfg);
4197                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4198                         mini_emit_write_barrier (cfg, ptr, target);
4199                 }
4200         }
4201
4202         /* Set method field */
4203         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4204         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4205
4206         /*
4207          * To avoid looking up the compiled code belonging to the target method
4208          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4209          * store it, and we fill it after the method has been compiled.
4210          */
4211         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4212                 MonoInst *code_slot_ins;
4213
4214                 if (context_used) {
4215                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4216                 } else {
4217                         domain = mono_domain_get ();
4218                         mono_domain_lock (domain);
4219                         if (!domain_jit_info (domain)->method_code_hash)
4220                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4221                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4222                         if (!code_slot) {
4223                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4224                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4225                         }
4226                         mono_domain_unlock (domain);
4227
4228                         code_slot_ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4229                 }
4230                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4231         }
4232
4233         if (cfg->llvm_only) {
4234                 MonoInst *args [16];
4235
4236                 if (virtual_) {
4237                         args [0] = obj;
4238                         args [1] = target;
4239                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4240                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4241                 } else {
4242                         args [0] = obj;
4243                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4244                 }
4245
4246                 return obj;
4247         }
4248
4249         if (cfg->compile_aot) {
4250                 MonoDelegateClassMethodPair *del_tramp;
4251
4252                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4253                 del_tramp->klass = klass;
4254                 del_tramp->method = context_used ? NULL : method;
4255                 del_tramp->is_virtual = virtual_;
4256                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4257         } else {
4258                 if (virtual_)
4259                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4260                 else
4261                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4262                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4263         }
4264
4265         /* Set invoke_impl field */
4266         if (virtual_) {
4267                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4268         } else {
4269                 dreg = alloc_preg (cfg);
4270                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4271                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4272
4273                 dreg = alloc_preg (cfg);
4274                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4275                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4276         }
4277
4278         dreg = alloc_preg (cfg);
4279         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4280         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4281
4282         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4283
4284         return obj;
4285 }
4286
4287 static MonoInst*
4288 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4289 {
4290         MonoJitICallInfo *info;
4291
4292         /* Need to register the icall so it gets an icall wrapper */
4293         info = mono_get_array_new_va_icall (rank);
4294
4295         cfg->flags |= MONO_CFG_HAS_VARARGS;
4296
4297         /* mono_array_new_va () needs a vararg calling convention */
4298         cfg->exception_message = g_strdup ("array-new");
4299         cfg->disable_llvm = TRUE;
4300
4301         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4302         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4303 }
4304
4305 /*
4306  * handle_constrained_gsharedvt_call:
4307  *
4308  *   Handle constrained calls where the receiver is a gsharedvt type.
4309  * Return the instruction representing the call. Set the cfg exception on failure.
4310  */
4311 static MonoInst*
4312 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4313                                                                    gboolean *ref_emit_widen)
4314 {
4315         MonoInst *ins = NULL;
4316         gboolean emit_widen = *ref_emit_widen;
4317
4318         /*
4319          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4320          * 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
4321          * pack the arguments into an array, and do the rest of the work in in an icall.
4322          */
4323         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4324                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret)) || mini_is_gsharedvt_type (fsig->ret)) &&
4325                 (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]))))) {
4326                 MonoInst *args [16];
4327
4328                 /*
4329                  * This case handles calls to
4330                  * - object:ToString()/Equals()/GetHashCode(),
4331                  * - System.IComparable<T>:CompareTo()
4332                  * - System.IEquatable<T>:Equals ()
4333                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4334                  */
4335
4336                 args [0] = sp [0];
4337                 if (mono_method_check_context_used (cmethod))
4338                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4339                 else
4340                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4341                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4342
4343                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4344                 if (fsig->hasthis && fsig->param_count) {
4345                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4346                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4347                         ins->dreg = alloc_preg (cfg);
4348                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4349                         MONO_ADD_INS (cfg->cbb, ins);
4350                         args [4] = ins;
4351
4352                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4353                                 int addr_reg, deref_arg_reg;
4354
4355                                 ins = mini_emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4356                                 deref_arg_reg = alloc_preg (cfg);
4357                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4358                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4359
4360                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4361                                 addr_reg = ins->dreg;
4362                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4363                         } else {
4364                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4365                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4366                         }
4367                 } else {
4368                         EMIT_NEW_ICONST (cfg, args [3], 0);
4369                         EMIT_NEW_ICONST (cfg, args [4], 0);
4370                 }
4371                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4372                 emit_widen = FALSE;
4373
4374                 if (mini_is_gsharedvt_type (fsig->ret)) {
4375                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4376                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4377                         MonoInst *add;
4378
4379                         /* Unbox */
4380                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4381                         MONO_ADD_INS (cfg->cbb, add);
4382                         /* Load value */
4383                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4384                         MONO_ADD_INS (cfg->cbb, ins);
4385                         /* ins represents the call result */
4386                 }
4387         } else {
4388                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4389         }
4390
4391         *ref_emit_widen = emit_widen;
4392
4393         return ins;
4394
4395  exception_exit:
4396         return NULL;
4397 }
4398
4399 static void
4400 mono_emit_load_got_addr (MonoCompile *cfg)
4401 {
4402         MonoInst *getaddr, *dummy_use;
4403
4404         if (!cfg->got_var || cfg->got_var_allocated)
4405                 return;
4406
4407         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4408         getaddr->cil_code = cfg->header->code;
4409         getaddr->dreg = cfg->got_var->dreg;
4410
4411         /* Add it to the start of the first bblock */
4412         if (cfg->bb_entry->code) {
4413                 getaddr->next = cfg->bb_entry->code;
4414                 cfg->bb_entry->code = getaddr;
4415         }
4416         else
4417                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4418
4419         cfg->got_var_allocated = TRUE;
4420
4421         /*
4422          * Add a dummy use to keep the got_var alive, since real uses might
4423          * only be generated by the back ends.
4424          * Add it to end_bblock, so the variable's lifetime covers the whole
4425          * method.
4426          * It would be better to make the usage of the got var explicit in all
4427          * cases when the backend needs it (i.e. calls, throw etc.), so this
4428          * wouldn't be needed.
4429          */
4430         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4431         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4432 }
4433
4434 static int inline_limit;
4435 static gboolean inline_limit_inited;
4436
4437 static gboolean
4438 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4439 {
4440         MonoMethodHeaderSummary header;
4441         MonoVTable *vtable;
4442 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4443         MonoMethodSignature *sig = mono_method_signature (method);
4444         int i;
4445 #endif
4446
4447         if (cfg->disable_inline)
4448                 return FALSE;
4449         if (cfg->gsharedvt)
4450                 return FALSE;
4451
4452         if (cfg->inline_depth > 10)
4453                 return FALSE;
4454
4455         if (!mono_method_get_header_summary (method, &header))
4456                 return FALSE;
4457
4458         /*runtime, icall and pinvoke are checked by summary call*/
4459         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4460             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4461             (mono_class_is_marshalbyref (method->klass)) ||
4462             header.has_clauses)
4463                 return FALSE;
4464
4465         /* also consider num_locals? */
4466         /* Do the size check early to avoid creating vtables */
4467         if (!inline_limit_inited) {
4468                 char *inlinelimit;
4469                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4470                         inline_limit = atoi (inlinelimit);
4471                         g_free (inlinelimit);
4472                 } else
4473                         inline_limit = INLINE_LENGTH_LIMIT;
4474                 inline_limit_inited = TRUE;
4475         }
4476         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4477                 return FALSE;
4478
4479         /*
4480          * if we can initialize the class of the method right away, we do,
4481          * otherwise we don't allow inlining if the class needs initialization,
4482          * since it would mean inserting a call to mono_runtime_class_init()
4483          * inside the inlined code
4484          */
4485         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4486                 return FALSE;
4487
4488         if (!(cfg->opt & MONO_OPT_SHARED)) {
4489                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4490                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4491                         if (method->klass->has_cctor) {
4492                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4493                                 if (!vtable)
4494                                         return FALSE;
4495                                 if (!cfg->compile_aot) {
4496                                         MonoError error;
4497                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4498                                                 mono_error_cleanup (&error);
4499                                                 return FALSE;
4500                                         }
4501                                 }
4502                         }
4503                 } else if (mono_class_is_before_field_init (method->klass)) {
4504                         if (cfg->run_cctors && method->klass->has_cctor) {
4505                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4506                                 if (!method->klass->runtime_info)
4507                                         /* No vtable created yet */
4508                                         return FALSE;
4509                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4510                                 if (!vtable)
4511                                         return FALSE;
4512                                 /* This makes so that inline cannot trigger */
4513                                 /* .cctors: too many apps depend on them */
4514                                 /* running with a specific order... */
4515                                 if (! vtable->initialized)
4516                                         return FALSE;
4517                                 MonoError error;
4518                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4519                                         mono_error_cleanup (&error);
4520                                         return FALSE;
4521                                 }
4522                         }
4523                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4524                         if (!method->klass->runtime_info)
4525                                 /* No vtable created yet */
4526                                 return FALSE;
4527                         vtable = mono_class_vtable (cfg->domain, method->klass);
4528                         if (!vtable)
4529                                 return FALSE;
4530                         if (!vtable->initialized)
4531                                 return FALSE;
4532                 }
4533         } else {
4534                 /*
4535                  * If we're compiling for shared code
4536                  * the cctor will need to be run at aot method load time, for example,
4537                  * or at the end of the compilation of the inlining method.
4538                  */
4539                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4540                         return FALSE;
4541         }
4542
4543 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4544         if (mono_arch_is_soft_float ()) {
4545                 /* FIXME: */
4546                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4547                         return FALSE;
4548                 for (i = 0; i < sig->param_count; ++i)
4549                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4550                                 return FALSE;
4551         }
4552 #endif
4553
4554         if (g_list_find (cfg->dont_inline, method))
4555                 return FALSE;
4556
4557         return TRUE;
4558 }
4559
4560 static gboolean
4561 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4562 {
4563         if (!cfg->compile_aot) {
4564                 g_assert (vtable);
4565                 if (vtable->initialized)
4566                         return FALSE;
4567         }
4568
4569         if (mono_class_is_before_field_init (klass)) {
4570                 if (cfg->method == method)
4571                         return FALSE;
4572         }
4573
4574         if (!mono_class_needs_cctor_run (klass, method))
4575                 return FALSE;
4576
4577         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4578                 /* The initialization is already done before the method is called */
4579                 return FALSE;
4580
4581         return TRUE;
4582 }
4583
4584 MonoInst*
4585 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4586 {
4587         MonoInst *ins;
4588         guint32 size;
4589         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4590         int context_used;
4591
4592         if (mini_is_gsharedvt_variable_klass (klass)) {
4593                 size = -1;
4594         } else {
4595                 mono_class_init (klass);
4596                 size = mono_class_array_element_size (klass);
4597         }
4598
4599         mult_reg = alloc_preg (cfg);
4600         array_reg = arr->dreg;
4601         index_reg = index->dreg;
4602
4603 #if SIZEOF_REGISTER == 8
4604         /* The array reg is 64 bits but the index reg is only 32 */
4605         if (COMPILE_LLVM (cfg)) {
4606                 /*
4607                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4608                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4609                  * of OP_X86_LEA for llvm.
4610                  */
4611                 index2_reg = index_reg;
4612         } else {
4613                 index2_reg = alloc_preg (cfg);
4614                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4615         }
4616 #else
4617         if (index->type == STACK_I8) {
4618                 index2_reg = alloc_preg (cfg);
4619                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4620         } else {
4621                 index2_reg = index_reg;
4622         }
4623 #endif
4624
4625         if (bcheck)
4626                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4627
4628 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4629         if (size == 1 || size == 2 || size == 4 || size == 8) {
4630                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4631
4632                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4633                 ins->klass = mono_class_get_element_class (klass);
4634                 ins->type = STACK_MP;
4635
4636                 return ins;
4637         }
4638 #endif
4639
4640         add_reg = alloc_ireg_mp (cfg);
4641
4642         if (size == -1) {
4643                 MonoInst *rgctx_ins;
4644
4645                 /* gsharedvt */
4646                 g_assert (cfg->gshared);
4647                 context_used = mini_class_check_context_used (cfg, klass);
4648                 g_assert (context_used);
4649                 rgctx_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4650                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4651         } else {
4652                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4653         }
4654         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4655         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4656         ins->klass = mono_class_get_element_class (klass);
4657         ins->type = STACK_MP;
4658         MONO_ADD_INS (cfg->cbb, ins);
4659
4660         return ins;
4661 }
4662
4663 static MonoInst*
4664 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4665 {
4666         int bounds_reg = alloc_preg (cfg);
4667         int add_reg = alloc_ireg_mp (cfg);
4668         int mult_reg = alloc_preg (cfg);
4669         int mult2_reg = alloc_preg (cfg);
4670         int low1_reg = alloc_preg (cfg);
4671         int low2_reg = alloc_preg (cfg);
4672         int high1_reg = alloc_preg (cfg);
4673         int high2_reg = alloc_preg (cfg);
4674         int realidx1_reg = alloc_preg (cfg);
4675         int realidx2_reg = alloc_preg (cfg);
4676         int sum_reg = alloc_preg (cfg);
4677         int index1, index2, tmpreg;
4678         MonoInst *ins;
4679         guint32 size;
4680
4681         mono_class_init (klass);
4682         size = mono_class_array_element_size (klass);
4683
4684         index1 = index_ins1->dreg;
4685         index2 = index_ins2->dreg;
4686
4687 #if SIZEOF_REGISTER == 8
4688         /* The array reg is 64 bits but the index reg is only 32 */
4689         if (COMPILE_LLVM (cfg)) {
4690                 /* Not needed */
4691         } else {
4692                 tmpreg = alloc_preg (cfg);
4693                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4694                 index1 = tmpreg;
4695                 tmpreg = alloc_preg (cfg);
4696                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4697                 index2 = tmpreg;
4698         }
4699 #else
4700         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4701         tmpreg = -1;
4702 #endif
4703
4704         /* range checking */
4705         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4706                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4707
4708         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4709                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4710         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4711         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4712                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4713         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4714         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4715
4716         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4717                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4718         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4719         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4720                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4721         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4722         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4723
4724         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4725         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4726         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4727         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4728         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4729
4730         ins->type = STACK_MP;
4731         ins->klass = klass;
4732         MONO_ADD_INS (cfg->cbb, ins);
4733
4734         return ins;
4735 }
4736
4737 static MonoInst*
4738 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4739 {
4740         int rank;
4741         MonoInst *addr;
4742         MonoMethod *addr_method;
4743         int element_size;
4744         MonoClass *eclass = cmethod->klass->element_class;
4745
4746         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4747
4748         if (rank == 1)
4749                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4750
4751         /* emit_ldelema_2 depends on OP_LMUL */
4752         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4753                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4754         }
4755
4756         if (mini_is_gsharedvt_variable_klass (eclass))
4757                 element_size = 0;
4758         else
4759                 element_size = mono_class_array_element_size (eclass);
4760         addr_method = mono_marshal_get_array_address (rank, element_size);
4761         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4762
4763         return addr;
4764 }
4765
4766 static MonoBreakPolicy
4767 always_insert_breakpoint (MonoMethod *method)
4768 {
4769         return MONO_BREAK_POLICY_ALWAYS;
4770 }
4771
4772 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
4773
4774 /**
4775  * mono_set_break_policy:
4776  * \param policy_callback the new callback function
4777  *
4778  * Allow embedders to decide wherther to actually obey breakpoint instructions
4779  * (both break IL instructions and \c Debugger.Break method calls), for example
4780  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
4781  * untrusted or semi-trusted code.
4782  *
4783  * \p policy_callback will be called every time a break point instruction needs to
4784  * be inserted with the method argument being the method that calls \c Debugger.Break
4785  * or has the IL \c break instruction. The callback should return \c MONO_BREAK_POLICY_NEVER
4786  * if it wants the breakpoint to not be effective in the given method.
4787  * \c MONO_BREAK_POLICY_ALWAYS is the default.
4788  */
4789 void
4790 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
4791 {
4792         if (policy_callback)
4793                 break_policy_func = policy_callback;
4794         else
4795                 break_policy_func = always_insert_breakpoint;
4796 }
4797
4798 static gboolean
4799 should_insert_brekpoint (MonoMethod *method) {
4800         switch (break_policy_func (method)) {
4801         case MONO_BREAK_POLICY_ALWAYS:
4802                 return TRUE;
4803         case MONO_BREAK_POLICY_NEVER:
4804                 return FALSE;
4805         case MONO_BREAK_POLICY_ON_DBG:
4806                 g_warning ("mdb no longer supported");
4807                 return FALSE;
4808         default:
4809                 g_warning ("Incorrect value returned from break policy callback");
4810                 return FALSE;
4811         }
4812 }
4813
4814 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4815 static MonoInst*
4816 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4817 {
4818         MonoInst *addr, *store, *load;
4819         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4820
4821         /* the bounds check is already done by the callers */
4822         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4823         if (is_set) {
4824                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4825                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4826                 if (mini_type_is_reference (&eklass->byval_arg))
4827                         mini_emit_write_barrier (cfg, addr, load);
4828         } else {
4829                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4830                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4831         }
4832         return store;
4833 }
4834
4835
4836 static gboolean
4837 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4838 {
4839         return mini_type_is_reference (&klass->byval_arg);
4840 }
4841
4842 static MonoInst*
4843 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4844 {
4845         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4846                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4847                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4848                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4849                 MonoInst *iargs [3];
4850
4851                 if (!helper->slot)
4852                         mono_class_setup_vtable (obj_array);
4853                 g_assert (helper->slot);
4854
4855                 if (sp [0]->type != STACK_OBJ)
4856                         return NULL;
4857                 if (sp [2]->type != STACK_OBJ)
4858                         return NULL;
4859
4860                 iargs [2] = sp [2];
4861                 iargs [1] = sp [1];
4862                 iargs [0] = sp [0];
4863
4864                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4865         } else {
4866                 MonoInst *ins;
4867
4868                 if (mini_is_gsharedvt_variable_klass (klass)) {
4869                         MonoInst *addr;
4870
4871                         // FIXME-VT: OP_ICONST optimization
4872                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4873                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4874                         ins->opcode = OP_STOREV_MEMBASE;
4875                 } else if (sp [1]->opcode == OP_ICONST) {
4876                         int array_reg = sp [0]->dreg;
4877                         int index_reg = sp [1]->dreg;
4878                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
4879
4880                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
4881                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
4882
4883                         if (safety_checks)
4884                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4885                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4886                 } else {
4887                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4888                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4889                         if (generic_class_is_reference_type (cfg, klass))
4890                                 mini_emit_write_barrier (cfg, addr, sp [2]);
4891                 }
4892                 return ins;
4893         }
4894 }
4895
4896 static MonoInst*
4897 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4898 {
4899         MonoClass *eklass;
4900
4901         if (is_set)
4902                 eklass = mono_class_from_mono_type (fsig->params [2]);
4903         else
4904                 eklass = mono_class_from_mono_type (fsig->ret);
4905
4906         if (is_set) {
4907                 return emit_array_store (cfg, eklass, args, FALSE);
4908         } else {
4909                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4910                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4911                 return ins;
4912         }
4913 }
4914
4915 static gboolean
4916 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
4917 {
4918         uint32_t align;
4919         int param_size, return_size;
4920
4921         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
4922         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
4923
4924         if (cfg->verbose_level > 3)
4925                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
4926
4927         //Don't allow mixing reference types with value types
4928         if (param_klass->valuetype != return_klass->valuetype) {
4929                 if (cfg->verbose_level > 3)
4930                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
4931                 return FALSE;
4932         }
4933
4934         if (!param_klass->valuetype) {
4935                 if (cfg->verbose_level > 3)
4936                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
4937                 return TRUE;
4938         }
4939
4940         //That are blitable
4941         if (param_klass->has_references || return_klass->has_references)
4942                 return FALSE;
4943
4944         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
4945         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
4946                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
4947                         if (cfg->verbose_level > 3)
4948                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
4949                 return FALSE;
4950         }
4951
4952         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
4953                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
4954                 if (cfg->verbose_level > 3)
4955                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
4956                 return FALSE;
4957         }
4958
4959         param_size = mono_class_value_size (param_klass, &align);
4960         return_size = mono_class_value_size (return_klass, &align);
4961
4962         //We can do it if sizes match
4963         if (param_size == return_size) {
4964                 if (cfg->verbose_level > 3)
4965                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
4966                 return TRUE;
4967         }
4968
4969         //No simple way to handle struct if sizes don't match
4970         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
4971                 if (cfg->verbose_level > 3)
4972                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
4973                 return FALSE;
4974         }
4975
4976         /*
4977          * Same reg size category.
4978          * A quick note on why we don't require widening here.
4979          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
4980          *
4981          * Since the source value comes from a function argument, the JIT will already have
4982          * the value in a VREG and performed any widening needed before (say, when loading from a field).
4983          */
4984         if (param_size <= 4 && return_size <= 4) {
4985                 if (cfg->verbose_level > 3)
4986                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
4987                 return TRUE;
4988         }
4989
4990         return FALSE;
4991 }
4992
4993 static MonoInst*
4994 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
4995 {
4996         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
4997         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
4998
4999         if (mini_is_gsharedvt_variable_type (fsig->ret))
5000                 return NULL;
5001
5002         //Valuetypes that are semantically equivalent or numbers than can be widened to
5003         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5004                 return args [0];
5005
5006         //Arrays of valuetypes that are semantically equivalent
5007         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5008                 return args [0];
5009
5010         return NULL;
5011 }
5012
5013 static MonoInst*
5014 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5015 {
5016 #ifdef MONO_ARCH_SIMD_INTRINSICS
5017         MonoInst *ins = NULL;
5018
5019         if (cfg->opt & MONO_OPT_SIMD) {
5020                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5021                 if (ins)
5022                         return ins;
5023         }
5024 #endif
5025
5026         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5027 }
5028
5029 MonoInst*
5030 mini_emit_memory_barrier (MonoCompile *cfg, int kind)
5031 {
5032         MonoInst *ins = NULL;
5033         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5034         MONO_ADD_INS (cfg->cbb, ins);
5035         ins->backend.memory_barrier_kind = kind;
5036
5037         return ins;
5038 }
5039
5040 static MonoInst*
5041 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5042 {
5043         MonoInst *ins = NULL;
5044         int opcode = 0;
5045
5046         /* The LLVM backend supports these intrinsics */
5047         if (cmethod->klass == mono_defaults.math_class) {
5048                 if (strcmp (cmethod->name, "Sin") == 0) {
5049                         opcode = OP_SIN;
5050                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5051                         opcode = OP_COS;
5052                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5053                         opcode = OP_SQRT;
5054                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5055                         opcode = OP_ABS;
5056                 }
5057
5058                 if (opcode && fsig->param_count == 1) {
5059                         MONO_INST_NEW (cfg, ins, opcode);
5060                         ins->type = STACK_R8;
5061                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5062                         ins->sreg1 = args [0]->dreg;
5063                         MONO_ADD_INS (cfg->cbb, ins);
5064                 }
5065
5066                 opcode = 0;
5067                 if (cfg->opt & MONO_OPT_CMOV) {
5068                         if (strcmp (cmethod->name, "Min") == 0) {
5069                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5070                                         opcode = OP_IMIN;
5071                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5072                                         opcode = OP_IMIN_UN;
5073                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5074                                         opcode = OP_LMIN;
5075                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5076                                         opcode = OP_LMIN_UN;
5077                         } else if (strcmp (cmethod->name, "Max") == 0) {
5078                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5079                                         opcode = OP_IMAX;
5080                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5081                                         opcode = OP_IMAX_UN;
5082                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5083                                         opcode = OP_LMAX;
5084                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5085                                         opcode = OP_LMAX_UN;
5086                         }
5087                 }
5088
5089                 if (opcode && fsig->param_count == 2) {
5090                         MONO_INST_NEW (cfg, ins, opcode);
5091                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5092                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5093                         ins->sreg1 = args [0]->dreg;
5094                         ins->sreg2 = args [1]->dreg;
5095                         MONO_ADD_INS (cfg->cbb, ins);
5096                 }
5097         }
5098
5099         return ins;
5100 }
5101
5102 static MonoInst*
5103 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5104 {
5105         if (cmethod->klass == mono_defaults.array_class) {
5106                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5107                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5108                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5109                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5110                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5111                         return emit_array_unsafe_mov (cfg, fsig, args);
5112         }
5113
5114         return NULL;
5115 }
5116
5117 static MonoInst*
5118 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5119 {
5120         MonoInst *ins = NULL;
5121         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5122
5123         if (cmethod->klass == mono_defaults.string_class) {
5124                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5125                         int dreg = alloc_ireg (cfg);
5126                         int index_reg = alloc_preg (cfg);
5127                         int add_reg = alloc_preg (cfg);
5128
5129 #if SIZEOF_REGISTER == 8
5130                         if (COMPILE_LLVM (cfg)) {
5131                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5132                         } else {
5133                                 /* The array reg is 64 bits but the index reg is only 32 */
5134                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5135                         }
5136 #else
5137                         index_reg = args [1]->dreg;
5138 #endif
5139                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5140
5141 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5142                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5143                         add_reg = ins->dreg;
5144                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5145                                                                    add_reg, 0);
5146 #else
5147                         int mult_reg = alloc_preg (cfg);
5148                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5149                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5150                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5151                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5152 #endif
5153                         type_from_op (cfg, ins, NULL, NULL);
5154                         return ins;
5155                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5156                         int dreg = alloc_ireg (cfg);
5157                         /* Decompose later to allow more optimizations */
5158                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5159                         ins->type = STACK_I4;
5160                         ins->flags |= MONO_INST_FAULT;
5161                         cfg->cbb->has_array_access = TRUE;
5162                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5163
5164                         return ins;
5165                 } else
5166                         return NULL;
5167         } else if (cmethod->klass == mono_defaults.object_class) {
5168                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5169                         int dreg = alloc_ireg_ref (cfg);
5170                         int vt_reg = alloc_preg (cfg);
5171                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5172                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
5173                         type_from_op (cfg, ins, NULL, NULL);
5174
5175                         return ins;
5176                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
5177                         int dreg = alloc_ireg (cfg);
5178                         int t1 = alloc_ireg (cfg);
5179
5180                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
5181                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
5182                         ins->type = STACK_I4;
5183
5184                         return ins;
5185                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
5186                         MONO_INST_NEW (cfg, ins, OP_NOP);
5187                         MONO_ADD_INS (cfg->cbb, ins);
5188                         return ins;
5189                 } else
5190                         return NULL;
5191         } else if (cmethod->klass == mono_defaults.array_class) {
5192                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5193                         return emit_array_generic_access (cfg, fsig, args, FALSE);
5194                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5195                         return emit_array_generic_access (cfg, fsig, args, TRUE);
5196
5197 #ifndef MONO_BIG_ARRAYS
5198                 /*
5199                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
5200                  * Array methods.
5201                  */
5202                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
5203                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
5204                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
5205                         int dreg = alloc_ireg (cfg);
5206                         int bounds_reg = alloc_ireg_mp (cfg);
5207                         MonoBasicBlock *end_bb, *szarray_bb;
5208                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
5209
5210                         NEW_BBLOCK (cfg, end_bb);
5211                         NEW_BBLOCK (cfg, szarray_bb);
5212
5213                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
5214                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5215                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5216                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5217                         /* Non-szarray case */
5218                         if (get_length)
5219                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5220                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5221                         else
5222                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5223                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5224                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5225                         MONO_START_BB (cfg, szarray_bb);
5226                         /* Szarray case */
5227                         if (get_length)
5228                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5229                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5230                         else
5231                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5232                         MONO_START_BB (cfg, end_bb);
5233
5234                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5235                         ins->type = STACK_I4;
5236
5237                         return ins;
5238                 }
5239 #endif
5240
5241                 if (cmethod->name [0] != 'g')
5242                         return NULL;
5243
5244                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5245                         int dreg = alloc_ireg (cfg);
5246                         int vtable_reg = alloc_preg (cfg);
5247                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5248                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5249                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5250                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5251                         type_from_op (cfg, ins, NULL, NULL);
5252
5253                         return ins;
5254                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5255                         int dreg = alloc_ireg (cfg);
5256
5257                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5258                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5259                         type_from_op (cfg, ins, NULL, NULL);
5260
5261                         return ins;
5262                 } else
5263                         return NULL;
5264         } else if (cmethod->klass == runtime_helpers_class) {
5265                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5266                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5267                         return ins;
5268                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5269                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5270                         g_assert (ctx);
5271                         g_assert (ctx->method_inst);
5272                         g_assert (ctx->method_inst->type_argc == 1);
5273                         MonoType *t = mini_get_underlying_type (ctx->method_inst->type_argv [0]);
5274                         MonoClass *klass = mono_class_from_mono_type (t);
5275
5276                         ins = NULL;
5277
5278                         mono_class_init (klass);
5279                         if (MONO_TYPE_IS_REFERENCE (t))
5280                                 EMIT_NEW_ICONST (cfg, ins, 1);
5281                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5282                                 EMIT_NEW_ICONST (cfg, ins, 0);
5283                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5284                                 EMIT_NEW_ICONST (cfg, ins, 1);
5285                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5286                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5287                         else {
5288                                 g_assert (cfg->gshared);
5289
5290                                 int context_used = mini_class_check_context_used (cfg, klass);
5291
5292                                 /* This returns 1 or 2 */
5293                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, klass,   MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5294                                 int dreg = alloc_ireg (cfg);
5295                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5296                         }
5297
5298                         return ins;
5299                 } else
5300                         return NULL;
5301         } else if (cmethod->klass == mono_defaults.monitor_class) {
5302                 gboolean is_enter = FALSE;
5303                 gboolean is_v4 = FALSE;
5304
5305                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5306                         is_enter = TRUE;
5307                         is_v4 = TRUE;
5308                 }
5309                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5310                         is_enter = TRUE;
5311
5312                 if (is_enter) {
5313                         /*
5314                          * To make async stack traces work, icalls which can block should have a wrapper.
5315                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5316                          */
5317                         MonoBasicBlock *end_bb;
5318
5319                         NEW_BBLOCK (cfg, end_bb);
5320
5321                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5322                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5323                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5324                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5325                         MONO_START_BB (cfg, end_bb);
5326                         return ins;
5327                 }
5328         } else if (cmethod->klass == mono_defaults.thread_class) {
5329                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5330                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5331                         MONO_ADD_INS (cfg->cbb, ins);
5332                         return ins;
5333                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5334                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5335                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5336                         guint32 opcode = 0;
5337                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5338
5339                         if (fsig->params [0]->type == MONO_TYPE_I1)
5340                                 opcode = OP_LOADI1_MEMBASE;
5341                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5342                                 opcode = OP_LOADU1_MEMBASE;
5343                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5344                                 opcode = OP_LOADI2_MEMBASE;
5345                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5346                                 opcode = OP_LOADU2_MEMBASE;
5347                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5348                                 opcode = OP_LOADI4_MEMBASE;
5349                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5350                                 opcode = OP_LOADU4_MEMBASE;
5351                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5352                                 opcode = OP_LOADI8_MEMBASE;
5353                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5354                                 opcode = OP_LOADR4_MEMBASE;
5355                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5356                                 opcode = OP_LOADR8_MEMBASE;
5357                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5358                                 opcode = OP_LOAD_MEMBASE;
5359
5360                         if (opcode) {
5361                                 MONO_INST_NEW (cfg, ins, opcode);
5362                                 ins->inst_basereg = args [0]->dreg;
5363                                 ins->inst_offset = 0;
5364                                 MONO_ADD_INS (cfg->cbb, ins);
5365
5366                                 switch (fsig->params [0]->type) {
5367                                 case MONO_TYPE_I1:
5368                                 case MONO_TYPE_U1:
5369                                 case MONO_TYPE_I2:
5370                                 case MONO_TYPE_U2:
5371                                 case MONO_TYPE_I4:
5372                                 case MONO_TYPE_U4:
5373                                         ins->dreg = mono_alloc_ireg (cfg);
5374                                         ins->type = STACK_I4;
5375                                         break;
5376                                 case MONO_TYPE_I8:
5377                                 case MONO_TYPE_U8:
5378                                         ins->dreg = mono_alloc_lreg (cfg);
5379                                         ins->type = STACK_I8;
5380                                         break;
5381                                 case MONO_TYPE_I:
5382                                 case MONO_TYPE_U:
5383                                         ins->dreg = mono_alloc_ireg (cfg);
5384 #if SIZEOF_REGISTER == 8
5385                                         ins->type = STACK_I8;
5386 #else
5387                                         ins->type = STACK_I4;
5388 #endif
5389                                         break;
5390                                 case MONO_TYPE_R4:
5391                                 case MONO_TYPE_R8:
5392                                         ins->dreg = mono_alloc_freg (cfg);
5393                                         ins->type = STACK_R8;
5394                                         break;
5395                                 default:
5396                                         g_assert (mini_type_is_reference (fsig->params [0]));
5397                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5398                                         ins->type = STACK_OBJ;
5399                                         break;
5400                                 }
5401
5402                                 if (opcode == OP_LOADI8_MEMBASE)
5403                                         ins = mono_decompose_opcode (cfg, ins);
5404
5405                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5406
5407                                 return ins;
5408                         }
5409                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5410                         guint32 opcode = 0;
5411                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5412
5413                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5414                                 opcode = OP_STOREI1_MEMBASE_REG;
5415                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5416                                 opcode = OP_STOREI2_MEMBASE_REG;
5417                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5418                                 opcode = OP_STOREI4_MEMBASE_REG;
5419                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5420                                 opcode = OP_STOREI8_MEMBASE_REG;
5421                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5422                                 opcode = OP_STORER4_MEMBASE_REG;
5423                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5424                                 opcode = OP_STORER8_MEMBASE_REG;
5425                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5426                                 opcode = OP_STORE_MEMBASE_REG;
5427
5428                         if (opcode) {
5429                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5430
5431                                 MONO_INST_NEW (cfg, ins, opcode);
5432                                 ins->sreg1 = args [1]->dreg;
5433                                 ins->inst_destbasereg = args [0]->dreg;
5434                                 ins->inst_offset = 0;
5435                                 MONO_ADD_INS (cfg->cbb, ins);
5436
5437                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5438                                         ins = mono_decompose_opcode (cfg, ins);
5439
5440                                 return ins;
5441                         }
5442                 }
5443         } else if (cmethod->klass->image == mono_defaults.corlib &&
5444                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5445                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5446                 ins = NULL;
5447
5448 #if SIZEOF_REGISTER == 8
5449                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5450                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5451                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5452                                 ins->dreg = mono_alloc_preg (cfg);
5453                                 ins->sreg1 = args [0]->dreg;
5454                                 ins->type = STACK_I8;
5455                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5456                                 MONO_ADD_INS (cfg->cbb, ins);
5457                         } else {
5458                                 MonoInst *load_ins;
5459
5460                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5461
5462                                 /* 64 bit reads are already atomic */
5463                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5464                                 load_ins->dreg = mono_alloc_preg (cfg);
5465                                 load_ins->inst_basereg = args [0]->dreg;
5466                                 load_ins->inst_offset = 0;
5467                                 load_ins->type = STACK_I8;
5468                                 MONO_ADD_INS (cfg->cbb, load_ins);
5469
5470                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5471
5472                                 ins = load_ins;
5473                         }
5474                 }
5475 #endif
5476
5477                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5478                         MonoInst *ins_iconst;
5479                         guint32 opcode = 0;
5480
5481                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5482                                 opcode = OP_ATOMIC_ADD_I4;
5483                                 cfg->has_atomic_add_i4 = TRUE;
5484                         }
5485 #if SIZEOF_REGISTER == 8
5486                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5487                                 opcode = OP_ATOMIC_ADD_I8;
5488 #endif
5489                         if (opcode) {
5490                                 if (!mono_arch_opcode_supported (opcode))
5491                                         return NULL;
5492                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5493                                 ins_iconst->inst_c0 = 1;
5494                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5495                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5496
5497                                 MONO_INST_NEW (cfg, ins, opcode);
5498                                 ins->dreg = mono_alloc_ireg (cfg);
5499                                 ins->inst_basereg = args [0]->dreg;
5500                                 ins->inst_offset = 0;
5501                                 ins->sreg2 = ins_iconst->dreg;
5502                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5503                                 MONO_ADD_INS (cfg->cbb, ins);
5504                         }
5505                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5506                         MonoInst *ins_iconst;
5507                         guint32 opcode = 0;
5508
5509                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5510                                 opcode = OP_ATOMIC_ADD_I4;
5511                                 cfg->has_atomic_add_i4 = TRUE;
5512                         }
5513 #if SIZEOF_REGISTER == 8
5514                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5515                                 opcode = OP_ATOMIC_ADD_I8;
5516 #endif
5517                         if (opcode) {
5518                                 if (!mono_arch_opcode_supported (opcode))
5519                                         return NULL;
5520                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5521                                 ins_iconst->inst_c0 = -1;
5522                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5523                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5524
5525                                 MONO_INST_NEW (cfg, ins, opcode);
5526                                 ins->dreg = mono_alloc_ireg (cfg);
5527                                 ins->inst_basereg = args [0]->dreg;
5528                                 ins->inst_offset = 0;
5529                                 ins->sreg2 = ins_iconst->dreg;
5530                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5531                                 MONO_ADD_INS (cfg->cbb, ins);
5532                         }
5533                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5534                         guint32 opcode = 0;
5535
5536                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5537                                 opcode = OP_ATOMIC_ADD_I4;
5538                                 cfg->has_atomic_add_i4 = TRUE;
5539                         }
5540 #if SIZEOF_REGISTER == 8
5541                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5542                                 opcode = OP_ATOMIC_ADD_I8;
5543 #endif
5544                         if (opcode) {
5545                                 if (!mono_arch_opcode_supported (opcode))
5546                                         return NULL;
5547                                 MONO_INST_NEW (cfg, ins, opcode);
5548                                 ins->dreg = mono_alloc_ireg (cfg);
5549                                 ins->inst_basereg = args [0]->dreg;
5550                                 ins->inst_offset = 0;
5551                                 ins->sreg2 = args [1]->dreg;
5552                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5553                                 MONO_ADD_INS (cfg->cbb, ins);
5554                         }
5555                 }
5556                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5557                         MonoInst *f2i = NULL, *i2f;
5558                         guint32 opcode, f2i_opcode, i2f_opcode;
5559                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5560                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5561
5562                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5563                             fsig->params [0]->type == MONO_TYPE_R4) {
5564                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5565                                 f2i_opcode = OP_MOVE_F_TO_I4;
5566                                 i2f_opcode = OP_MOVE_I4_TO_F;
5567                                 cfg->has_atomic_exchange_i4 = TRUE;
5568                         }
5569 #if SIZEOF_REGISTER == 8
5570                         else if (is_ref ||
5571                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5572                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5573                                  fsig->params [0]->type == MONO_TYPE_I) {
5574                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5575                                 f2i_opcode = OP_MOVE_F_TO_I8;
5576                                 i2f_opcode = OP_MOVE_I8_TO_F;
5577                         }
5578 #else
5579                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5580                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5581                                 cfg->has_atomic_exchange_i4 = TRUE;
5582                         }
5583 #endif
5584                         else
5585                                 return NULL;
5586
5587                         if (!mono_arch_opcode_supported (opcode))
5588                                 return NULL;
5589
5590                         if (is_float) {
5591                                 /* TODO: Decompose these opcodes instead of bailing here. */
5592                                 if (COMPILE_SOFT_FLOAT (cfg))
5593                                         return NULL;
5594
5595                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5596                                 f2i->dreg = mono_alloc_ireg (cfg);
5597                                 f2i->sreg1 = args [1]->dreg;
5598                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5599                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5600                                 MONO_ADD_INS (cfg->cbb, f2i);
5601                         }
5602
5603                         MONO_INST_NEW (cfg, ins, opcode);
5604                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5605                         ins->inst_basereg = args [0]->dreg;
5606                         ins->inst_offset = 0;
5607                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5608                         MONO_ADD_INS (cfg->cbb, ins);
5609
5610                         switch (fsig->params [0]->type) {
5611                         case MONO_TYPE_I4:
5612                                 ins->type = STACK_I4;
5613                                 break;
5614                         case MONO_TYPE_I8:
5615                                 ins->type = STACK_I8;
5616                                 break;
5617                         case MONO_TYPE_I:
5618 #if SIZEOF_REGISTER == 8
5619                                 ins->type = STACK_I8;
5620 #else
5621                                 ins->type = STACK_I4;
5622 #endif
5623                                 break;
5624                         case MONO_TYPE_R4:
5625                         case MONO_TYPE_R8:
5626                                 ins->type = STACK_R8;
5627                                 break;
5628                         default:
5629                                 g_assert (mini_type_is_reference (fsig->params [0]));
5630                                 ins->type = STACK_OBJ;
5631                                 break;
5632                         }
5633
5634                         if (is_float) {
5635                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5636                                 i2f->dreg = mono_alloc_freg (cfg);
5637                                 i2f->sreg1 = ins->dreg;
5638                                 i2f->type = STACK_R8;
5639                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5640                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5641                                 MONO_ADD_INS (cfg->cbb, i2f);
5642
5643                                 ins = i2f;
5644                         }
5645
5646                         if (cfg->gen_write_barriers && is_ref)
5647                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5648                 }
5649                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5650                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5651                         guint32 opcode, f2i_opcode, i2f_opcode;
5652                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5653                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5654
5655                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5656                             fsig->params [1]->type == MONO_TYPE_R4) {
5657                                 opcode = OP_ATOMIC_CAS_I4;
5658                                 f2i_opcode = OP_MOVE_F_TO_I4;
5659                                 i2f_opcode = OP_MOVE_I4_TO_F;
5660                                 cfg->has_atomic_cas_i4 = TRUE;
5661                         }
5662 #if SIZEOF_REGISTER == 8
5663                         else if (is_ref ||
5664                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5665                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5666                                  fsig->params [1]->type == MONO_TYPE_I) {
5667                                 opcode = OP_ATOMIC_CAS_I8;
5668                                 f2i_opcode = OP_MOVE_F_TO_I8;
5669                                 i2f_opcode = OP_MOVE_I8_TO_F;
5670                         }
5671 #else
5672                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5673                                 opcode = OP_ATOMIC_CAS_I4;
5674                                 cfg->has_atomic_cas_i4 = TRUE;
5675                         }
5676 #endif
5677                         else
5678                                 return NULL;
5679
5680                         if (!mono_arch_opcode_supported (opcode))
5681                                 return NULL;
5682
5683                         if (is_float) {
5684                                 /* TODO: Decompose these opcodes instead of bailing here. */
5685                                 if (COMPILE_SOFT_FLOAT (cfg))
5686                                         return NULL;
5687
5688                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5689                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5690                                 f2i_new->sreg1 = args [1]->dreg;
5691                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5692                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5693                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5694
5695                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5696                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5697                                 f2i_cmp->sreg1 = args [2]->dreg;
5698                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5699                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5700                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5701                         }
5702
5703                         MONO_INST_NEW (cfg, ins, opcode);
5704                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5705                         ins->sreg1 = args [0]->dreg;
5706                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5707                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5708                         MONO_ADD_INS (cfg->cbb, ins);
5709
5710                         switch (fsig->params [1]->type) {
5711                         case MONO_TYPE_I4:
5712                                 ins->type = STACK_I4;
5713                                 break;
5714                         case MONO_TYPE_I8:
5715                                 ins->type = STACK_I8;
5716                                 break;
5717                         case MONO_TYPE_I:
5718 #if SIZEOF_REGISTER == 8
5719                                 ins->type = STACK_I8;
5720 #else
5721                                 ins->type = STACK_I4;
5722 #endif
5723                                 break;
5724                         case MONO_TYPE_R4:
5725                                 ins->type = cfg->r4_stack_type;
5726                                 break;
5727                         case MONO_TYPE_R8:
5728                                 ins->type = STACK_R8;
5729                                 break;
5730                         default:
5731                                 g_assert (mini_type_is_reference (fsig->params [1]));
5732                                 ins->type = STACK_OBJ;
5733                                 break;
5734                         }
5735
5736                         if (is_float) {
5737                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5738                                 i2f->dreg = mono_alloc_freg (cfg);
5739                                 i2f->sreg1 = ins->dreg;
5740                                 i2f->type = STACK_R8;
5741                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5742                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5743                                 MONO_ADD_INS (cfg->cbb, i2f);
5744
5745                                 ins = i2f;
5746                         }
5747
5748                         if (cfg->gen_write_barriers && is_ref)
5749                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5750                 }
5751                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5752                          fsig->params [1]->type == MONO_TYPE_I4) {
5753                         MonoInst *cmp, *ceq;
5754
5755                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5756                                 return NULL;
5757
5758                         /* int32 r = CAS (location, value, comparand); */
5759                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5760                         ins->dreg = alloc_ireg (cfg);
5761                         ins->sreg1 = args [0]->dreg;
5762                         ins->sreg2 = args [1]->dreg;
5763                         ins->sreg3 = args [2]->dreg;
5764                         ins->type = STACK_I4;
5765                         MONO_ADD_INS (cfg->cbb, ins);
5766
5767                         /* bool result = r == comparand; */
5768                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5769                         cmp->sreg1 = ins->dreg;
5770                         cmp->sreg2 = args [2]->dreg;
5771                         cmp->type = STACK_I4;
5772                         MONO_ADD_INS (cfg->cbb, cmp);
5773
5774                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5775                         ceq->dreg = alloc_ireg (cfg);
5776                         ceq->type = STACK_I4;
5777                         MONO_ADD_INS (cfg->cbb, ceq);
5778
5779                         /* *success = result; */
5780                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5781
5782                         cfg->has_atomic_cas_i4 = TRUE;
5783                 }
5784                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5785                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5786
5787                 if (ins)
5788                         return ins;
5789         } else if (cmethod->klass->image == mono_defaults.corlib &&
5790                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5791                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5792                 ins = NULL;
5793
5794                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5795                         guint32 opcode = 0;
5796                         MonoType *t = fsig->params [0];
5797                         gboolean is_ref;
5798                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5799
5800                         g_assert (t->byref);
5801                         /* t is a byref type, so the reference check is more complicated */
5802                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5803                         if (t->type == MONO_TYPE_I1)
5804                                 opcode = OP_ATOMIC_LOAD_I1;
5805                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5806                                 opcode = OP_ATOMIC_LOAD_U1;
5807                         else if (t->type == MONO_TYPE_I2)
5808                                 opcode = OP_ATOMIC_LOAD_I2;
5809                         else if (t->type == MONO_TYPE_U2)
5810                                 opcode = OP_ATOMIC_LOAD_U2;
5811                         else if (t->type == MONO_TYPE_I4)
5812                                 opcode = OP_ATOMIC_LOAD_I4;
5813                         else if (t->type == MONO_TYPE_U4)
5814                                 opcode = OP_ATOMIC_LOAD_U4;
5815                         else if (t->type == MONO_TYPE_R4)
5816                                 opcode = OP_ATOMIC_LOAD_R4;
5817                         else if (t->type == MONO_TYPE_R8)
5818                                 opcode = OP_ATOMIC_LOAD_R8;
5819 #if SIZEOF_REGISTER == 8
5820                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5821                                 opcode = OP_ATOMIC_LOAD_I8;
5822                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5823                                 opcode = OP_ATOMIC_LOAD_U8;
5824 #else
5825                         else if (t->type == MONO_TYPE_I)
5826                                 opcode = OP_ATOMIC_LOAD_I4;
5827                         else if (is_ref || t->type == MONO_TYPE_U)
5828                                 opcode = OP_ATOMIC_LOAD_U4;
5829 #endif
5830
5831                         if (opcode) {
5832                                 if (!mono_arch_opcode_supported (opcode))
5833                                         return NULL;
5834
5835                                 MONO_INST_NEW (cfg, ins, opcode);
5836                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5837                                 ins->sreg1 = args [0]->dreg;
5838                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5839                                 MONO_ADD_INS (cfg->cbb, ins);
5840
5841                                 switch (t->type) {
5842                                 case MONO_TYPE_BOOLEAN:
5843                                 case MONO_TYPE_I1:
5844                                 case MONO_TYPE_U1:
5845                                 case MONO_TYPE_I2:
5846                                 case MONO_TYPE_U2:
5847                                 case MONO_TYPE_I4:
5848                                 case MONO_TYPE_U4:
5849                                         ins->type = STACK_I4;
5850                                         break;
5851                                 case MONO_TYPE_I8:
5852                                 case MONO_TYPE_U8:
5853                                         ins->type = STACK_I8;
5854                                         break;
5855                                 case MONO_TYPE_I:
5856                                 case MONO_TYPE_U:
5857 #if SIZEOF_REGISTER == 8
5858                                         ins->type = STACK_I8;
5859 #else
5860                                         ins->type = STACK_I4;
5861 #endif
5862                                         break;
5863                                 case MONO_TYPE_R4:
5864                                         ins->type = cfg->r4_stack_type;
5865                                         break;
5866                                 case MONO_TYPE_R8:
5867                                         ins->type = STACK_R8;
5868                                         break;
5869                                 default:
5870                                         g_assert (is_ref);
5871                                         ins->type = STACK_OBJ;
5872                                         break;
5873                                 }
5874                         }
5875                 }
5876
5877                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5878                         guint32 opcode = 0;
5879                         MonoType *t = fsig->params [0];
5880                         gboolean is_ref;
5881
5882                         g_assert (t->byref);
5883                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5884                         if (t->type == MONO_TYPE_I1)
5885                                 opcode = OP_ATOMIC_STORE_I1;
5886                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5887                                 opcode = OP_ATOMIC_STORE_U1;
5888                         else if (t->type == MONO_TYPE_I2)
5889                                 opcode = OP_ATOMIC_STORE_I2;
5890                         else if (t->type == MONO_TYPE_U2)
5891                                 opcode = OP_ATOMIC_STORE_U2;
5892                         else if (t->type == MONO_TYPE_I4)
5893                                 opcode = OP_ATOMIC_STORE_I4;
5894                         else if (t->type == MONO_TYPE_U4)
5895                                 opcode = OP_ATOMIC_STORE_U4;
5896                         else if (t->type == MONO_TYPE_R4)
5897                                 opcode = OP_ATOMIC_STORE_R4;
5898                         else if (t->type == MONO_TYPE_R8)
5899                                 opcode = OP_ATOMIC_STORE_R8;
5900 #if SIZEOF_REGISTER == 8
5901                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5902                                 opcode = OP_ATOMIC_STORE_I8;
5903                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5904                                 opcode = OP_ATOMIC_STORE_U8;
5905 #else
5906                         else if (t->type == MONO_TYPE_I)
5907                                 opcode = OP_ATOMIC_STORE_I4;
5908                         else if (is_ref || t->type == MONO_TYPE_U)
5909                                 opcode = OP_ATOMIC_STORE_U4;
5910 #endif
5911
5912                         if (opcode) {
5913                                 if (!mono_arch_opcode_supported (opcode))
5914                                         return NULL;
5915
5916                                 MONO_INST_NEW (cfg, ins, opcode);
5917                                 ins->dreg = args [0]->dreg;
5918                                 ins->sreg1 = args [1]->dreg;
5919                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5920                                 MONO_ADD_INS (cfg->cbb, ins);
5921
5922                                 if (cfg->gen_write_barriers && is_ref)
5923                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5924                         }
5925                 }
5926
5927                 if (ins)
5928                         return ins;
5929         } else if (cmethod->klass->image == mono_defaults.corlib &&
5930                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5931                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5932                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5933                         if (should_insert_brekpoint (cfg->method)) {
5934                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5935                         } else {
5936                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5937                                 MONO_ADD_INS (cfg->cbb, ins);
5938                         }
5939                         return ins;
5940                 }
5941         } else if (cmethod->klass->image == mono_defaults.corlib &&
5942                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5943                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5944                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5945 #ifdef TARGET_WIN32
5946                         EMIT_NEW_ICONST (cfg, ins, 1);
5947 #else
5948                         EMIT_NEW_ICONST (cfg, ins, 0);
5949 #endif
5950                 }
5951         } else if (cmethod->klass->image == mono_defaults.corlib &&
5952                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5953                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5954                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5955                         /* No stack walks are currently available, so implement this as an intrinsic */
5956                         MonoInst *assembly_ins;
5957
5958                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5959                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5960                         return ins;
5961                 }
5962         } else if (cmethod->klass->image == mono_defaults.corlib &&
5963                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5964                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5965                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5966                         /* No stack walks are currently available, so implement this as an intrinsic */
5967                         MonoInst *method_ins;
5968                         MonoMethod *declaring = cfg->method;
5969
5970                         /* This returns the declaring generic method */
5971                         if (declaring->is_inflated)
5972                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5973                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5974                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5975                         cfg->no_inline = TRUE;
5976                         if (cfg->method != cfg->current_method)
5977                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5978                         return ins;
5979                 }
5980         } else if (cmethod->klass == mono_defaults.math_class) {
5981                 /*
5982                  * There is general branchless code for Min/Max, but it does not work for
5983                  * all inputs:
5984                  * http://everything2.com/?node_id=1051618
5985                  */
5986         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5987                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5988                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5989                 ins->dreg = alloc_preg (cfg);
5990                 ins->type = STACK_I4;
5991                 MONO_ADD_INS (cfg->cbb, ins);
5992                 return ins;
5993         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5994                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5995                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5996                                 !strcmp (cmethod->klass->name, "Selector")) ||
5997                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
5998                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
5999                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6000                                 !strcmp (cmethod->klass->name, "Selector"))
6001                            ) {
6002                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
6003                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6004                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6005                     cfg->compile_aot) {
6006                         MonoInst *pi;
6007                         MonoJumpInfoToken *ji;
6008                         char *s;
6009
6010                         if (args [0]->opcode == OP_GOT_ENTRY) {
6011                                 pi = (MonoInst *)args [0]->inst_p1;
6012                                 g_assert (pi->opcode == OP_PATCH_INFO);
6013                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6014                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6015                         } else {
6016                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6017                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6018                         }
6019
6020                         NULLIFY_INS (args [0]);
6021
6022                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6023                         return_val_if_nok (&cfg->error, NULL);
6024
6025                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6026                         ins->dreg = mono_alloc_ireg (cfg);
6027                         // FIXME: Leaks
6028                         ins->inst_p0 = s;
6029                         MONO_ADD_INS (cfg->cbb, ins);
6030                         return ins;
6031                 }
6032         }
6033
6034 #ifdef MONO_ARCH_SIMD_INTRINSICS
6035         if (cfg->opt & MONO_OPT_SIMD) {
6036                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6037                 if (ins)
6038                         return ins;
6039         }
6040 #endif
6041
6042         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6043         if (ins)
6044                 return ins;
6045
6046         if (COMPILE_LLVM (cfg)) {
6047                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6048                 if (ins)
6049                         return ins;
6050         }
6051
6052         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6053 }
6054
6055 /*
6056  * This entry point could be used later for arbitrary method
6057  * redirection.
6058  */
6059 inline static MonoInst*
6060 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6061                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6062 {
6063         if (method->klass == mono_defaults.string_class) {
6064                 /* managed string allocation support */
6065                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6066                         MonoInst *iargs [2];
6067                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6068                         MonoMethod *managed_alloc = NULL;
6069
6070                         g_assert (vtable); /*Should not fail since it System.String*/
6071 #ifndef MONO_CROSS_COMPILE
6072                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6073 #endif
6074                         if (!managed_alloc)
6075                                 return NULL;
6076                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6077                         iargs [1] = args [0];
6078                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6079                 }
6080         }
6081         return NULL;
6082 }
6083
6084 static void
6085 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6086 {
6087         MonoInst *store, *temp;
6088         int i;
6089
6090         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6091                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6092
6093                 /*
6094                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6095                  * would be different than the MonoInst's used to represent arguments, and
6096                  * the ldelema implementation can't deal with that.
6097                  * Solution: When ldelema is used on an inline argument, create a var for
6098                  * it, emit ldelema on that var, and emit the saving code below in
6099                  * inline_method () if needed.
6100                  */
6101                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6102                 cfg->args [i] = temp;
6103                 /* This uses cfg->args [i] which is set by the preceeding line */
6104                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6105                 store->cil_code = sp [0]->cil_code;
6106                 sp++;
6107         }
6108 }
6109
6110 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6111 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6112
6113 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6114 static gboolean
6115 check_inline_called_method_name_limit (MonoMethod *called_method)
6116 {
6117         int strncmp_result;
6118         static const char *limit = NULL;
6119
6120         if (limit == NULL) {
6121                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6122
6123                 if (limit_string != NULL)
6124                         limit = limit_string;
6125                 else
6126                         limit = "";
6127         }
6128
6129         if (limit [0] != '\0') {
6130                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6131
6132                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6133                 g_free (called_method_name);
6134
6135                 //return (strncmp_result <= 0);
6136                 return (strncmp_result == 0);
6137         } else {
6138                 return TRUE;
6139         }
6140 }
6141 #endif
6142
6143 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6144 static gboolean
6145 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6146 {
6147         int strncmp_result;
6148         static const char *limit = NULL;
6149
6150         if (limit == NULL) {
6151                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6152                 if (limit_string != NULL) {
6153                         limit = limit_string;
6154                 } else {
6155                         limit = "";
6156                 }
6157         }
6158
6159         if (limit [0] != '\0') {
6160                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6161
6162                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6163                 g_free (caller_method_name);
6164
6165                 //return (strncmp_result <= 0);
6166                 return (strncmp_result == 0);
6167         } else {
6168                 return TRUE;
6169         }
6170 }
6171 #endif
6172
6173 static void
6174 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6175 {
6176         static double r8_0 = 0.0;
6177         static float r4_0 = 0.0;
6178         MonoInst *ins;
6179         int t;
6180
6181         rtype = mini_get_underlying_type (rtype);
6182         t = rtype->type;
6183
6184         if (rtype->byref) {
6185                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6186         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6187                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6188         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6189                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6190         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6191                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6192                 ins->type = STACK_R4;
6193                 ins->inst_p0 = (void*)&r4_0;
6194                 ins->dreg = dreg;
6195                 MONO_ADD_INS (cfg->cbb, ins);
6196         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6197                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6198                 ins->type = STACK_R8;
6199                 ins->inst_p0 = (void*)&r8_0;
6200                 ins->dreg = dreg;
6201                 MONO_ADD_INS (cfg->cbb, ins);
6202         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6203                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6204                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6205         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6206                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6207         } else {
6208                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6209         }
6210 }
6211
6212 static void
6213 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6214 {
6215         int t;
6216
6217         rtype = mini_get_underlying_type (rtype);
6218         t = rtype->type;
6219
6220         if (rtype->byref) {
6221                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6222         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6223                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6224         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6225                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6226         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6227                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6228         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6229                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6230         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6231                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6232                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6233         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6234                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6235         } else {
6236                 emit_init_rvar (cfg, dreg, rtype);
6237         }
6238 }
6239
6240 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6241 static void
6242 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6243 {
6244         MonoInst *var = cfg->locals [local];
6245         if (COMPILE_SOFT_FLOAT (cfg)) {
6246                 MonoInst *store;
6247                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6248                 emit_init_rvar (cfg, reg, type);
6249                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6250         } else {
6251                 if (init)
6252                         emit_init_rvar (cfg, var->dreg, type);
6253                 else
6254                         emit_dummy_init_rvar (cfg, var->dreg, type);
6255         }
6256 }
6257
6258 int
6259 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6260 {
6261         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6262 }
6263
6264 /*
6265  * inline_method:
6266  *
6267  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6268  */
6269 static int
6270 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6271                guchar *ip, guint real_offset, gboolean inline_always)
6272 {
6273         MonoError error;
6274         MonoInst *ins, *rvar = NULL;
6275         MonoMethodHeader *cheader;
6276         MonoBasicBlock *ebblock, *sbblock;
6277         int i, costs;
6278         MonoMethod *prev_inlined_method;
6279         MonoInst **prev_locals, **prev_args;
6280         MonoType **prev_arg_types;
6281         guint prev_real_offset;
6282         GHashTable *prev_cbb_hash;
6283         MonoBasicBlock **prev_cil_offset_to_bb;
6284         MonoBasicBlock *prev_cbb;
6285         const unsigned char *prev_ip;
6286         unsigned char *prev_cil_start;
6287         guint32 prev_cil_offset_to_bb_len;
6288         MonoMethod *prev_current_method;
6289         MonoGenericContext *prev_generic_context;
6290         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6291
6292         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6293
6294 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6295         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6296                 return 0;
6297 #endif
6298 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6299         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6300                 return 0;
6301 #endif
6302
6303         if (!fsig)
6304                 fsig = mono_method_signature (cmethod);
6305
6306         if (cfg->verbose_level > 2)
6307                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6308
6309         if (!cmethod->inline_info) {
6310                 cfg->stat_inlineable_methods++;
6311                 cmethod->inline_info = 1;
6312         }
6313
6314         /* allocate local variables */
6315         cheader = mono_method_get_header_checked (cmethod, &error);
6316         if (!cheader) {
6317                 if (inline_always) {
6318                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6319                         mono_error_move (&cfg->error, &error);
6320                 } else {
6321                         mono_error_cleanup (&error);
6322                 }
6323                 return 0;
6324         }
6325
6326         /*Must verify before creating locals as it can cause the JIT to assert.*/
6327         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6328                 mono_metadata_free_mh (cheader);
6329                 return 0;
6330         }
6331
6332         /* allocate space to store the return value */
6333         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6334                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6335         }
6336
6337         prev_locals = cfg->locals;
6338         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6339         for (i = 0; i < cheader->num_locals; ++i)
6340                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6341
6342         /* allocate start and end blocks */
6343         /* This is needed so if the inline is aborted, we can clean up */
6344         NEW_BBLOCK (cfg, sbblock);
6345         sbblock->real_offset = real_offset;
6346
6347         NEW_BBLOCK (cfg, ebblock);
6348         ebblock->block_num = cfg->num_bblocks++;
6349         ebblock->real_offset = real_offset;
6350
6351         prev_args = cfg->args;
6352         prev_arg_types = cfg->arg_types;
6353         prev_inlined_method = cfg->inlined_method;
6354         cfg->inlined_method = cmethod;
6355         cfg->ret_var_set = FALSE;
6356         cfg->inline_depth ++;
6357         prev_real_offset = cfg->real_offset;
6358         prev_cbb_hash = cfg->cbb_hash;
6359         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6360         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6361         prev_cil_start = cfg->cil_start;
6362         prev_ip = cfg->ip;
6363         prev_cbb = cfg->cbb;
6364         prev_current_method = cfg->current_method;
6365         prev_generic_context = cfg->generic_context;
6366         prev_ret_var_set = cfg->ret_var_set;
6367         prev_disable_inline = cfg->disable_inline;
6368
6369         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6370                 virtual_ = TRUE;
6371
6372         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6373
6374         ret_var_set = cfg->ret_var_set;
6375
6376         cfg->inlined_method = prev_inlined_method;
6377         cfg->real_offset = prev_real_offset;
6378         cfg->cbb_hash = prev_cbb_hash;
6379         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6380         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6381         cfg->cil_start = prev_cil_start;
6382         cfg->ip = prev_ip;
6383         cfg->locals = prev_locals;
6384         cfg->args = prev_args;
6385         cfg->arg_types = prev_arg_types;
6386         cfg->current_method = prev_current_method;
6387         cfg->generic_context = prev_generic_context;
6388         cfg->ret_var_set = prev_ret_var_set;
6389         cfg->disable_inline = prev_disable_inline;
6390         cfg->inline_depth --;
6391
6392         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6393                 if (cfg->verbose_level > 2)
6394                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6395
6396                 cfg->stat_inlined_methods++;
6397
6398                 /* always add some code to avoid block split failures */
6399                 MONO_INST_NEW (cfg, ins, OP_NOP);
6400                 MONO_ADD_INS (prev_cbb, ins);
6401
6402                 prev_cbb->next_bb = sbblock;
6403                 link_bblock (cfg, prev_cbb, sbblock);
6404
6405                 /*
6406                  * Get rid of the begin and end bblocks if possible to aid local
6407                  * optimizations.
6408                  */
6409                 if (prev_cbb->out_count == 1)
6410                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6411
6412                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6413                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6414
6415                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6416                         MonoBasicBlock *prev = ebblock->in_bb [0];
6417
6418                         if (prev->next_bb == ebblock) {
6419                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6420                                 cfg->cbb = prev;
6421                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6422                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6423                                         cfg->cbb = prev_cbb;
6424                                 }
6425                         } else {
6426                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6427                                 cfg->cbb = ebblock;
6428                         }
6429                 } else {
6430                         /*
6431                          * Its possible that the rvar is set in some prev bblock, but not in others.
6432                          * (#1835).
6433                          */
6434                         if (rvar) {
6435                                 MonoBasicBlock *bb;
6436
6437                                 for (i = 0; i < ebblock->in_count; ++i) {
6438                                         bb = ebblock->in_bb [i];
6439
6440                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6441                                                 cfg->cbb = bb;
6442
6443                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6444                                         }
6445                                 }
6446                         }
6447
6448                         cfg->cbb = ebblock;
6449                 }
6450
6451                 if (rvar) {
6452                         /*
6453                          * If the inlined method contains only a throw, then the ret var is not
6454                          * set, so set it to a dummy value.
6455                          */
6456                         if (!ret_var_set)
6457                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6458
6459                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6460                         *sp++ = ins;
6461                 }
6462                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6463                 return costs + 1;
6464         } else {
6465                 if (cfg->verbose_level > 2)
6466                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6467                 cfg->exception_type = MONO_EXCEPTION_NONE;
6468
6469                 /* This gets rid of the newly added bblocks */
6470                 cfg->cbb = prev_cbb;
6471         }
6472         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6473         return 0;
6474 }
6475
6476 /*
6477  * Some of these comments may well be out-of-date.
6478  * Design decisions: we do a single pass over the IL code (and we do bblock
6479  * splitting/merging in the few cases when it's required: a back jump to an IL
6480  * address that was not already seen as bblock starting point).
6481  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6482  * Complex operations are decomposed in simpler ones right away. We need to let the
6483  * arch-specific code peek and poke inside this process somehow (except when the
6484  * optimizations can take advantage of the full semantic info of coarse opcodes).
6485  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6486  * MonoInst->opcode initially is the IL opcode or some simplification of that
6487  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6488  * opcode with value bigger than OP_LAST.
6489  * At this point the IR can be handed over to an interpreter, a dumb code generator
6490  * or to the optimizing code generator that will translate it to SSA form.
6491  *
6492  * Profiling directed optimizations.
6493  * We may compile by default with few or no optimizations and instrument the code
6494  * or the user may indicate what methods to optimize the most either in a config file
6495  * or through repeated runs where the compiler applies offline the optimizations to
6496  * each method and then decides if it was worth it.
6497  */
6498
6499 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6500 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6501 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6502 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6503 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6504 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6505 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6506 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6507
6508 /* offset from br.s -> br like opcodes */
6509 #define BIG_BRANCH_OFFSET 13
6510
6511 static gboolean
6512 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6513 {
6514         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6515
6516         return b == NULL || b == bb;
6517 }
6518
6519 static int
6520 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6521 {
6522         unsigned char *ip = start;
6523         unsigned char *target;
6524         int i;
6525         guint cli_addr;
6526         MonoBasicBlock *bblock;
6527         const MonoOpcode *opcode;
6528
6529         while (ip < end) {
6530                 cli_addr = ip - start;
6531                 i = mono_opcode_value ((const guint8 **)&ip, end);
6532                 if (i < 0)
6533                         UNVERIFIED;
6534                 opcode = &mono_opcodes [i];
6535                 switch (opcode->argument) {
6536                 case MonoInlineNone:
6537                         ip++;
6538                         break;
6539                 case MonoInlineString:
6540                 case MonoInlineType:
6541                 case MonoInlineField:
6542                 case MonoInlineMethod:
6543                 case MonoInlineTok:
6544                 case MonoInlineSig:
6545                 case MonoShortInlineR:
6546                 case MonoInlineI:
6547                         ip += 5;
6548                         break;
6549                 case MonoInlineVar:
6550                         ip += 3;
6551                         break;
6552                 case MonoShortInlineVar:
6553                 case MonoShortInlineI:
6554                         ip += 2;
6555                         break;
6556                 case MonoShortInlineBrTarget:
6557                         target = start + cli_addr + 2 + (signed char)ip [1];
6558                         GET_BBLOCK (cfg, bblock, target);
6559                         ip += 2;
6560                         if (ip < end)
6561                                 GET_BBLOCK (cfg, bblock, ip);
6562                         break;
6563                 case MonoInlineBrTarget:
6564                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6565                         GET_BBLOCK (cfg, bblock, target);
6566                         ip += 5;
6567                         if (ip < end)
6568                                 GET_BBLOCK (cfg, bblock, ip);
6569                         break;
6570                 case MonoInlineSwitch: {
6571                         guint32 n = read32 (ip + 1);
6572                         guint32 j;
6573                         ip += 5;
6574                         cli_addr += 5 + 4 * n;
6575                         target = start + cli_addr;
6576                         GET_BBLOCK (cfg, bblock, target);
6577
6578                         for (j = 0; j < n; ++j) {
6579                                 target = start + cli_addr + (gint32)read32 (ip);
6580                                 GET_BBLOCK (cfg, bblock, target);
6581                                 ip += 4;
6582                         }
6583                         break;
6584                 }
6585                 case MonoInlineR:
6586                 case MonoInlineI8:
6587                         ip += 9;
6588                         break;
6589                 default:
6590                         g_assert_not_reached ();
6591                 }
6592
6593                 if (i == CEE_THROW) {
6594                         unsigned char *bb_start = ip - 1;
6595
6596                         /* Find the start of the bblock containing the throw */
6597                         bblock = NULL;
6598                         while ((bb_start >= start) && !bblock) {
6599                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6600                                 bb_start --;
6601                         }
6602                         if (bblock)
6603                                 bblock->out_of_line = 1;
6604                 }
6605         }
6606         return 0;
6607 unverified:
6608 exception_exit:
6609         *pos = ip;
6610         return 1;
6611 }
6612
6613 static inline MonoMethod *
6614 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6615 {
6616         MonoMethod *method;
6617
6618         error_init (error);
6619
6620         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6621                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6622                 if (context) {
6623                         method = mono_class_inflate_generic_method_checked (method, context, error);
6624                 }
6625         } else {
6626                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6627         }
6628
6629         return method;
6630 }
6631
6632 static inline MonoMethod *
6633 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6634 {
6635         MonoError error;
6636         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6637
6638         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6639                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6640                 method = NULL;
6641         }
6642
6643         if (!method && !cfg)
6644                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6645
6646         return method;
6647 }
6648
6649 MonoClass*
6650 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
6651 {
6652         MonoError error;
6653         MonoClass *klass;
6654
6655         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6656                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
6657                 if (context) {
6658                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
6659                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6660                 }
6661         } else {
6662                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
6663                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6664         }
6665         if (klass)
6666                 mono_class_init (klass);
6667         return klass;
6668 }
6669
6670 static inline MonoMethodSignature*
6671 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6672 {
6673         MonoMethodSignature *fsig;
6674
6675         error_init (error);
6676         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6677                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6678         } else {
6679                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6680                 return_val_if_nok (error, NULL);
6681         }
6682         if (context) {
6683                 fsig = mono_inflate_generic_signature(fsig, context, error);
6684         }
6685         return fsig;
6686 }
6687
6688 static MonoMethod*
6689 throw_exception (void)
6690 {
6691         static MonoMethod *method = NULL;
6692
6693         if (!method) {
6694                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6695                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6696         }
6697         g_assert (method);
6698         return method;
6699 }
6700
6701 static void
6702 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6703 {
6704         MonoMethod *thrower = throw_exception ();
6705         MonoInst *args [1];
6706
6707         EMIT_NEW_PCONST (cfg, args [0], ex);
6708         mono_emit_method_call (cfg, thrower, args, NULL);
6709 }
6710
6711 /*
6712  * Return the original method is a wrapper is specified. We can only access
6713  * the custom attributes from the original method.
6714  */
6715 static MonoMethod*
6716 get_original_method (MonoMethod *method)
6717 {
6718         if (method->wrapper_type == MONO_WRAPPER_NONE)
6719                 return method;
6720
6721         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6722         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6723                 return NULL;
6724
6725         /* in other cases we need to find the original method */
6726         return mono_marshal_method_from_wrapper (method);
6727 }
6728
6729 static void
6730 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6731 {
6732         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6733         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6734         if (ex)
6735                 emit_throw_exception (cfg, ex);
6736 }
6737
6738 static void
6739 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6740 {
6741         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6742         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6743         if (ex)
6744                 emit_throw_exception (cfg, ex);
6745 }
6746
6747 /*
6748  * Check that the IL instructions at ip are the array initialization
6749  * sequence and return the pointer to the data and the size.
6750  */
6751 static const char*
6752 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6753 {
6754         /*
6755          * newarr[System.Int32]
6756          * dup
6757          * ldtoken field valuetype ...
6758          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6759          */
6760         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6761                 MonoError error;
6762                 guint32 token = read32 (ip + 7);
6763                 guint32 field_token = read32 (ip + 2);
6764                 guint32 field_index = field_token & 0xffffff;
6765                 guint32 rva;
6766                 const char *data_ptr;
6767                 int size = 0;
6768                 MonoMethod *cmethod;
6769                 MonoClass *dummy_class;
6770                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6771                 int dummy_align;
6772
6773                 if (!field) {
6774                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6775                         return NULL;
6776                 }
6777
6778                 *out_field_token = field_token;
6779
6780                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6781                 if (!cmethod)
6782                         return NULL;
6783                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6784                         return NULL;
6785                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6786                 case MONO_TYPE_I1:
6787                 case MONO_TYPE_U1:
6788                         size = 1; break;
6789                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6790 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6791                 case MONO_TYPE_I2:
6792                 case MONO_TYPE_U2:
6793                         size = 2; break;
6794                 case MONO_TYPE_I4:
6795                 case MONO_TYPE_U4:
6796                 case MONO_TYPE_R4:
6797                         size = 4; break;
6798                 case MONO_TYPE_R8:
6799                 case MONO_TYPE_I8:
6800                 case MONO_TYPE_U8:
6801                         size = 8; break;
6802 #endif
6803                 default:
6804                         return NULL;
6805                 }
6806                 size *= len;
6807                 if (size > mono_type_size (field->type, &dummy_align))
6808                     return NULL;
6809                 *out_size = size;
6810                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6811                 if (!image_is_dynamic (method->klass->image)) {
6812                         field_index = read32 (ip + 2) & 0xffffff;
6813                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6814                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6815                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6816                         /* for aot code we do the lookup on load */
6817                         if (aot && data_ptr)
6818                                 return (const char *)GUINT_TO_POINTER (rva);
6819                 } else {
6820                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6821                         g_assert (!aot);
6822                         data_ptr = mono_field_get_data (field);
6823                 }
6824                 return data_ptr;
6825         }
6826         return NULL;
6827 }
6828
6829 static void
6830 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6831 {
6832         MonoError error;
6833         char *method_fname = mono_method_full_name (method, TRUE);
6834         char *method_code;
6835         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6836
6837         if (!header) {
6838                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6839                 mono_error_cleanup (&error);
6840         } else if (header->code_size == 0)
6841                 method_code = g_strdup ("method body is empty.");
6842         else
6843                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6844         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6845         g_free (method_fname);
6846         g_free (method_code);
6847         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6848 }
6849
6850 static void
6851 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6852 {
6853         MonoInst *ins;
6854         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6855         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6856                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6857                 /* Optimize reg-reg moves away */
6858                 /*
6859                  * Can't optimize other opcodes, since sp[0] might point to
6860                  * the last ins of a decomposed opcode.
6861                  */
6862                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6863         } else {
6864                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6865         }
6866 }
6867
6868 /*
6869  * ldloca inhibits many optimizations so try to get rid of it in common
6870  * cases.
6871  */
6872 static inline unsigned char *
6873 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6874 {
6875         int local, token;
6876         MonoClass *klass;
6877         MonoType *type;
6878
6879         if (size == 1) {
6880                 local = ip [1];
6881                 ip += 2;
6882         } else {
6883                 local = read16 (ip + 2);
6884                 ip += 4;
6885         }
6886
6887         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6888                 /* From the INITOBJ case */
6889                 token = read32 (ip + 2);
6890                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6891                 CHECK_TYPELOAD (klass);
6892                 type = mini_get_underlying_type (&klass->byval_arg);
6893                 emit_init_local (cfg, local, type, TRUE);
6894                 return ip + 6;
6895         }
6896  exception_exit:
6897         return NULL;
6898 }
6899
6900 static MonoInst*
6901 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6902 {
6903         MonoInst *icall_args [16];
6904         MonoInst *call_target, *ins, *vtable_ins;
6905         int arg_reg, this_reg, vtable_reg;
6906         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6907         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6908         gboolean variant_iface = FALSE;
6909         guint32 slot;
6910         int offset;
6911         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6912
6913         /*
6914          * In llvm-only mode, vtables contain function descriptors instead of
6915          * method addresses/trampolines.
6916          */
6917         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6918
6919         if (is_iface)
6920                 slot = mono_method_get_imt_slot (cmethod);
6921         else
6922                 slot = mono_method_get_vtable_index (cmethod);
6923
6924         this_reg = sp [0]->dreg;
6925
6926         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6927                 variant_iface = TRUE;
6928
6929         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6930                 /*
6931                  * The simplest case, a normal virtual call.
6932                  */
6933                 int slot_reg = alloc_preg (cfg);
6934                 int addr_reg = alloc_preg (cfg);
6935                 int arg_reg = alloc_preg (cfg);
6936                 MonoBasicBlock *non_null_bb;
6937
6938                 vtable_reg = alloc_preg (cfg);
6939                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6940                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6941
6942                 /* Load the vtable slot, which contains a function descriptor. */
6943                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6944
6945                 NEW_BBLOCK (cfg, non_null_bb);
6946
6947                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6948                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6949                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6950
6951                 /* Slow path */
6952                 // FIXME: Make the wrapper use the preserveall cconv
6953                 // FIXME: Use one icall per slot for small slot numbers ?
6954                 icall_args [0] = vtable_ins;
6955                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6956                 /* Make the icall return the vtable slot value to save some code space */
6957                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6958                 ins->dreg = slot_reg;
6959                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6960
6961                 /* Fastpath */
6962                 MONO_START_BB (cfg, non_null_bb);
6963                 /* Load the address + arg from the vtable slot */
6964                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6965                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6966
6967                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6968         }
6969
6970         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6971                 /*
6972                  * A simple interface call
6973                  *
6974                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6975                  * The imt slot contains a function descriptor for a runtime function + arg.
6976                  */
6977                 int slot_reg = alloc_preg (cfg);
6978                 int addr_reg = alloc_preg (cfg);
6979                 int arg_reg = alloc_preg (cfg);
6980                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6981
6982                 vtable_reg = alloc_preg (cfg);
6983                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6984                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6985
6986                 /*
6987                  * The slot is already initialized when the vtable is created so there is no need
6988                  * to check it here.
6989                  */
6990
6991                 /* Load the imt slot, which contains a function descriptor. */
6992                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6993
6994                 /* Load the address + arg of the imt thunk from the imt slot */
6995                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6996                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6997                 /*
6998                  * IMT thunks in llvm-only mode are C functions which take an info argument
6999                  * plus the imt method and return the ftndesc to call.
7000                  */
7001                 icall_args [0] = thunk_arg_ins;
7002                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7003                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7004                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7005
7006                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7007         }
7008
7009         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
7010                 /*
7011                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7012                  * dynamically extended as more instantiations are discovered.
7013                  * This handles generic virtual methods both on classes and interfaces.
7014                  */
7015                 int slot_reg = alloc_preg (cfg);
7016                 int addr_reg = alloc_preg (cfg);
7017                 int arg_reg = alloc_preg (cfg);
7018                 int ftndesc_reg = alloc_preg (cfg);
7019                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7020                 MonoBasicBlock *slowpath_bb, *end_bb;
7021
7022                 NEW_BBLOCK (cfg, slowpath_bb);
7023                 NEW_BBLOCK (cfg, end_bb);
7024
7025                 vtable_reg = alloc_preg (cfg);
7026                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7027                 if (is_iface)
7028                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7029                 else
7030                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7031
7032                 /* Load the slot, which contains a function descriptor. */
7033                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7034
7035                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7036                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7037                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7038                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7039
7040                 /* Fastpath */
7041                 /* Same as with iface calls */
7042                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7043                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7044                 icall_args [0] = thunk_arg_ins;
7045                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7046                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7047                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7048                 ftndesc_ins->dreg = ftndesc_reg;
7049                 /*
7050                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7051                  * they don't know about yet. Fall back to the slowpath in that case.
7052                  */
7053                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7054                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7055
7056                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7057
7058                 /* Slowpath */
7059                 MONO_START_BB (cfg, slowpath_bb);
7060                 icall_args [0] = vtable_ins;
7061                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7062                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7063                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7064                 if (is_iface)
7065                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7066                 else
7067                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7068                 ftndesc_ins->dreg = ftndesc_reg;
7069                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7070
7071                 /* Common case */
7072                 MONO_START_BB (cfg, end_bb);
7073                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7074         }
7075
7076         /*
7077          * Non-optimized cases
7078          */
7079         icall_args [0] = sp [0];
7080         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7081
7082         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7083                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7084
7085         arg_reg = alloc_preg (cfg);
7086         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7087         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7088
7089         g_assert (is_gsharedvt);
7090         if (is_iface)
7091                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7092         else
7093                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7094
7095         /*
7096          * Pass the extra argument even if the callee doesn't receive it, most
7097          * calling conventions allow this.
7098          */
7099         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7100 }
7101
7102 static gboolean
7103 is_exception_class (MonoClass *klass)
7104 {
7105         while (klass) {
7106                 if (klass == mono_defaults.exception_class)
7107                         return TRUE;
7108                 klass = klass->parent;
7109         }
7110         return FALSE;
7111 }
7112
7113 /*
7114  * is_jit_optimizer_disabled:
7115  *
7116  *   Determine whenever M's assembly has a DebuggableAttribute with the
7117  * IsJITOptimizerDisabled flag set.
7118  */
7119 static gboolean
7120 is_jit_optimizer_disabled (MonoMethod *m)
7121 {
7122         MonoError error;
7123         MonoAssembly *ass = m->klass->image->assembly;
7124         MonoCustomAttrInfo* attrs;
7125         MonoClass *klass;
7126         int i;
7127         gboolean val = FALSE;
7128
7129         g_assert (ass);
7130         if (ass->jit_optimizer_disabled_inited)
7131                 return ass->jit_optimizer_disabled;
7132
7133         klass = mono_class_try_get_debuggable_attribute_class ();
7134
7135         if (!klass) {
7136                 /* Linked away */
7137                 ass->jit_optimizer_disabled = FALSE;
7138                 mono_memory_barrier ();
7139                 ass->jit_optimizer_disabled_inited = TRUE;
7140                 return FALSE;
7141         }
7142
7143         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
7144         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7145         if (attrs) {
7146                 for (i = 0; i < attrs->num_attrs; ++i) {
7147                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7148                         const gchar *p;
7149                         MonoMethodSignature *sig;
7150
7151                         if (!attr->ctor || attr->ctor->klass != klass)
7152                                 continue;
7153                         /* Decode the attribute. See reflection.c */
7154                         p = (const char*)attr->data;
7155                         g_assert (read16 (p) == 0x0001);
7156                         p += 2;
7157
7158                         // FIXME: Support named parameters
7159                         sig = mono_method_signature (attr->ctor);
7160                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7161                                 continue;
7162                         /* Two boolean arguments */
7163                         p ++;
7164                         val = *p;
7165                 }
7166                 mono_custom_attrs_free (attrs);
7167         }
7168
7169         ass->jit_optimizer_disabled = val;
7170         mono_memory_barrier ();
7171         ass->jit_optimizer_disabled_inited = TRUE;
7172
7173         return val;
7174 }
7175
7176 static gboolean
7177 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7178 {
7179         gboolean supported_tail_call;
7180         int i;
7181
7182         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7183
7184         for (i = 0; i < fsig->param_count; ++i) {
7185                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7186                         /* These can point to the current method's stack */
7187                         supported_tail_call = FALSE;
7188         }
7189         if (fsig->hasthis && cmethod->klass->valuetype)
7190                 /* this might point to the current method's stack */
7191                 supported_tail_call = FALSE;
7192         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7193                 supported_tail_call = FALSE;
7194         if (cfg->method->save_lmf)
7195                 supported_tail_call = FALSE;
7196         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7197                 supported_tail_call = FALSE;
7198         if (call_opcode != CEE_CALL)
7199                 supported_tail_call = FALSE;
7200
7201         /* Debugging support */
7202 #if 0
7203         if (supported_tail_call) {
7204                 if (!mono_debug_count ())
7205                         supported_tail_call = FALSE;
7206         }
7207 #endif
7208
7209         return supported_tail_call;
7210 }
7211
7212 /*
7213  * handle_ctor_call:
7214  *
7215  *   Handle calls made to ctors from NEWOBJ opcodes.
7216  */
7217 static void
7218 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7219                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7220 {
7221         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7222
7223         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7224                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7225                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7226                         mono_class_vtable (cfg->domain, cmethod->klass);
7227                         CHECK_TYPELOAD (cmethod->klass);
7228
7229                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7230                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7231                 } else {
7232                         if (context_used) {
7233                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7234                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7235                         } else {
7236                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7237
7238                                 CHECK_TYPELOAD (cmethod->klass);
7239                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7240                         }
7241                 }
7242         }
7243
7244         /* Avoid virtual calls to ctors if possible */
7245         if (mono_class_is_marshalbyref (cmethod->klass))
7246                 callvirt_this_arg = sp [0];
7247
7248         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7249                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7250                 CHECK_CFG_EXCEPTION;
7251         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7252                            mono_method_check_inlining (cfg, cmethod) &&
7253                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7254                 int costs;
7255
7256                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7257                         cfg->real_offset += 5;
7258
7259                         *inline_costs += costs - 5;
7260                 } else {
7261                         INLINE_FAILURE ("inline failure");
7262                         // FIXME-VT: Clean this up
7263                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7264                                 GSHAREDVT_FAILURE(*ip);
7265                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7266                 }
7267         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7268                 MonoInst *addr;
7269
7270                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7271
7272                 if (cfg->llvm_only) {
7273                         // FIXME: Avoid initializing vtable_arg
7274                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7275                 } else {
7276                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7277                 }
7278         } else if (context_used &&
7279                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7280                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7281                 MonoInst *cmethod_addr;
7282
7283                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7284
7285                 if (cfg->llvm_only) {
7286                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7287                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7288                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7289                 } else {
7290                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7291                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7292
7293                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7294                 }
7295         } else {
7296                 INLINE_FAILURE ("ctor call");
7297                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7298                                                                                   callvirt_this_arg, NULL, vtable_arg);
7299         }
7300  exception_exit:
7301         return;
7302 }
7303
7304 static void
7305 emit_setret (MonoCompile *cfg, MonoInst *val)
7306 {
7307         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7308         MonoInst *ins;
7309
7310         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7311                 MonoInst *ret_addr;
7312
7313                 if (!cfg->vret_addr) {
7314                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7315                 } else {
7316                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7317
7318                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7319                         ins->klass = mono_class_from_mono_type (ret_type);
7320                 }
7321         } else {
7322 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7323                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7324                         MonoInst *iargs [1];
7325                         MonoInst *conv;
7326
7327                         iargs [0] = val;
7328                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7329                         mono_arch_emit_setret (cfg, cfg->method, conv);
7330                 } else {
7331                         mono_arch_emit_setret (cfg, cfg->method, val);
7332                 }
7333 #else
7334                 mono_arch_emit_setret (cfg, cfg->method, val);
7335 #endif
7336         }
7337 }
7338
7339 /*
7340  * mono_method_to_ir:
7341  *
7342  * Translate the .net IL into linear IR.
7343  *
7344  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7345  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7346  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7347  * @inline_args: if not NULL, contains the arguments to the inline call
7348  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7349  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7350  *
7351  * This method is used to turn ECMA IL into Mono's internal Linear IR
7352  * reprensetation.  It is used both for entire methods, as well as
7353  * inlining existing methods.  In the former case, the @start_bblock,
7354  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7355  * inline_offset is set to zero.
7356  *
7357  * Returns: the inline cost, or -1 if there was an error processing this method.
7358  */
7359 int
7360 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7361                    MonoInst *return_var, MonoInst **inline_args,
7362                    guint inline_offset, gboolean is_virtual_call)
7363 {
7364         MonoError error;
7365         MonoInst *ins, **sp, **stack_start;
7366         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7367         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7368         MonoMethod *cmethod, *method_definition;
7369         MonoInst **arg_array;
7370         MonoMethodHeader *header;
7371         MonoImage *image;
7372         guint32 token, ins_flag;
7373         MonoClass *klass;
7374         MonoClass *constrained_class = NULL;
7375         unsigned char *ip, *end, *target, *err_pos;
7376         MonoMethodSignature *sig;
7377         MonoGenericContext *generic_context = NULL;
7378         MonoGenericContainer *generic_container = NULL;
7379         MonoType **param_types;
7380         int i, n, start_new_bblock, dreg;
7381         int num_calls = 0, inline_costs = 0;
7382         int breakpoint_id = 0;
7383         guint num_args;
7384         GSList *class_inits = NULL;
7385         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7386         int context_used;
7387         gboolean init_locals, seq_points, skip_dead_blocks;
7388         gboolean sym_seq_points = FALSE;
7389         MonoDebugMethodInfo *minfo;
7390         MonoBitSet *seq_point_locs = NULL;
7391         MonoBitSet *seq_point_set_locs = NULL;
7392
7393         cfg->disable_inline = is_jit_optimizer_disabled (method);
7394
7395         /* serialization and xdomain stuff may need access to private fields and methods */
7396         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7397         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7398         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7399         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7400         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7401         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7402
7403         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7404         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7405         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7406         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7407         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7408
7409         image = method->klass->image;
7410         header = mono_method_get_header_checked (method, &cfg->error);
7411         if (!header) {
7412                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7413                 goto exception_exit;
7414         } else {
7415                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7416         }
7417
7418         generic_container = mono_method_get_generic_container (method);
7419         sig = mono_method_signature (method);
7420         num_args = sig->hasthis + sig->param_count;
7421         ip = (unsigned char*)header->code;
7422         cfg->cil_start = ip;
7423         end = ip + header->code_size;
7424         cfg->stat_cil_code_size += header->code_size;
7425
7426         seq_points = cfg->gen_seq_points && cfg->method == method;
7427
7428         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7429                 /* We could hit a seq point before attaching to the JIT (#8338) */
7430                 seq_points = FALSE;
7431         }
7432
7433         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7434                 minfo = mono_debug_lookup_method (method);
7435                 if (minfo) {
7436                         MonoSymSeqPoint *sps;
7437                         int i, n_il_offsets;
7438
7439                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7440                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7441                         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);
7442                         sym_seq_points = TRUE;
7443                         for (i = 0; i < n_il_offsets; ++i) {
7444                                 if (sps [i].il_offset < header->code_size)
7445                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7446                         }
7447                         g_free (sps);
7448
7449                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7450                         if (asyncMethod) {
7451                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7452                                 {
7453                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7454                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7455                                 }
7456                                 mono_debug_free_method_async_debug_info (asyncMethod);
7457                         }
7458                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7459                         /* Methods without line number info like auto-generated property accessors */
7460                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7461                         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);
7462                         sym_seq_points = TRUE;
7463                 }
7464         }
7465
7466         /*
7467          * Methods without init_locals set could cause asserts in various passes
7468          * (#497220). To work around this, we emit dummy initialization opcodes
7469          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7470          * on some platforms.
7471          */
7472         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7473                 init_locals = header->init_locals;
7474         else
7475                 init_locals = TRUE;
7476
7477         method_definition = method;
7478         while (method_definition->is_inflated) {
7479                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7480                 method_definition = imethod->declaring;
7481         }
7482
7483         /* SkipVerification is not allowed if core-clr is enabled */
7484         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7485                 dont_verify = TRUE;
7486                 dont_verify_stloc = TRUE;
7487         }
7488
7489         if (sig->is_inflated)
7490                 generic_context = mono_method_get_context (method);
7491         else if (generic_container)
7492                 generic_context = &generic_container->context;
7493         cfg->generic_context = generic_context;
7494
7495         if (!cfg->gshared)
7496                 g_assert (!sig->has_type_parameters);
7497
7498         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7499                 g_assert (method->is_inflated);
7500                 g_assert (mono_method_get_context (method)->method_inst);
7501         }
7502         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7503                 g_assert (sig->generic_param_count);
7504
7505         if (cfg->method == method) {
7506                 cfg->real_offset = 0;
7507         } else {
7508                 cfg->real_offset = inline_offset;
7509         }
7510
7511         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7512         cfg->cil_offset_to_bb_len = header->code_size;
7513
7514         cfg->current_method = method;
7515
7516         if (cfg->verbose_level > 2)
7517                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7518
7519         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7520         if (sig->hasthis)
7521                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7522         for (n = 0; n < sig->param_count; ++n)
7523                 param_types [n + sig->hasthis] = sig->params [n];
7524         cfg->arg_types = param_types;
7525
7526         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7527         if (cfg->method == method) {
7528
7529                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7530                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7531
7532                 /* ENTRY BLOCK */
7533                 NEW_BBLOCK (cfg, start_bblock);
7534                 cfg->bb_entry = start_bblock;
7535                 start_bblock->cil_code = NULL;
7536                 start_bblock->cil_length = 0;
7537
7538                 /* EXIT BLOCK */
7539                 NEW_BBLOCK (cfg, end_bblock);
7540                 cfg->bb_exit = end_bblock;
7541                 end_bblock->cil_code = NULL;
7542                 end_bblock->cil_length = 0;
7543                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7544                 g_assert (cfg->num_bblocks == 2);
7545
7546                 arg_array = cfg->args;
7547
7548                 if (header->num_clauses) {
7549                         cfg->spvars = g_hash_table_new (NULL, NULL);
7550                         cfg->exvars = g_hash_table_new (NULL, NULL);
7551                 }
7552                 /* handle exception clauses */
7553                 for (i = 0; i < header->num_clauses; ++i) {
7554                         MonoBasicBlock *try_bb;
7555                         MonoExceptionClause *clause = &header->clauses [i];
7556                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7557
7558                         try_bb->real_offset = clause->try_offset;
7559                         try_bb->try_start = TRUE;
7560                         try_bb->region = ((i + 1) << 8) | clause->flags;
7561                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7562                         tblock->real_offset = clause->handler_offset;
7563                         tblock->flags |= BB_EXCEPTION_HANDLER;
7564
7565                         /*
7566                          * Linking the try block with the EH block hinders inlining as we won't be able to
7567                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7568                          */
7569                         if (COMPILE_LLVM (cfg))
7570                                 link_bblock (cfg, try_bb, tblock);
7571
7572                         if (*(ip + clause->handler_offset) == CEE_POP)
7573                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7574
7575                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7576                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7577                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7578                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7579                                 MONO_ADD_INS (tblock, ins);
7580
7581                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7582                                         /* finally clauses already have a seq point */
7583                                         /* seq points for filter clauses are emitted below */
7584                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7585                                         MONO_ADD_INS (tblock, ins);
7586                                 }
7587
7588                                 /* todo: is a fault block unsafe to optimize? */
7589                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7590                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7591                         }
7592
7593                         /*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);
7594                           while (p < end) {
7595                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7596                           }*/
7597                         /* catch and filter blocks get the exception object on the stack */
7598                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7599                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7600
7601                                 /* mostly like handle_stack_args (), but just sets the input args */
7602                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7603                                 tblock->in_scount = 1;
7604                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7605                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7606
7607                                 cfg->cbb = tblock;
7608
7609 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7610                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7611                                 if (!cfg->compile_llvm) {
7612                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7613                                         ins->dreg = tblock->in_stack [0]->dreg;
7614                                         MONO_ADD_INS (tblock, ins);
7615                                 }
7616 #else
7617                                 MonoInst *dummy_use;
7618
7619                                 /*
7620                                  * Add a dummy use for the exvar so its liveness info will be
7621                                  * correct.
7622                                  */
7623                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7624 #endif
7625
7626                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7627                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7628                                         MONO_ADD_INS (tblock, ins);
7629                                 }
7630
7631                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7632                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7633                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7634                                         tblock->real_offset = clause->data.filter_offset;
7635                                         tblock->in_scount = 1;
7636                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7637                                         /* The filter block shares the exvar with the handler block */
7638                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7639                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7640                                         MONO_ADD_INS (tblock, ins);
7641                                 }
7642                         }
7643
7644                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7645                                         clause->data.catch_class &&
7646                                         cfg->gshared &&
7647                                         mono_class_check_context_used (clause->data.catch_class)) {
7648                                 /*
7649                                  * In shared generic code with catch
7650                                  * clauses containing type variables
7651                                  * the exception handling code has to
7652                                  * be able to get to the rgctx.
7653                                  * Therefore we have to make sure that
7654                                  * the vtable/mrgctx argument (for
7655                                  * static or generic methods) or the
7656                                  * "this" argument (for non-static
7657                                  * methods) are live.
7658                                  */
7659                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7660                                                 mini_method_get_context (method)->method_inst ||
7661                                                 method->klass->valuetype) {
7662                                         mono_get_vtable_var (cfg);
7663                                 } else {
7664                                         MonoInst *dummy_use;
7665
7666                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7667                                 }
7668                         }
7669                 }
7670         } else {
7671                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7672                 cfg->cbb = start_bblock;
7673                 cfg->args = arg_array;
7674                 mono_save_args (cfg, sig, inline_args);
7675         }
7676
7677         /* FIRST CODE BLOCK */
7678         NEW_BBLOCK (cfg, tblock);
7679         tblock->cil_code = ip;
7680         cfg->cbb = tblock;
7681         cfg->ip = ip;
7682
7683         ADD_BBLOCK (cfg, tblock);
7684
7685         if (cfg->method == method) {
7686                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7687                 if (breakpoint_id) {
7688                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7689                         MONO_ADD_INS (cfg->cbb, ins);
7690                 }
7691         }
7692
7693         /* we use a separate basic block for the initialization code */
7694         NEW_BBLOCK (cfg, init_localsbb);
7695         if (cfg->method == method)
7696                 cfg->bb_init = init_localsbb;
7697         init_localsbb->real_offset = cfg->real_offset;
7698         start_bblock->next_bb = init_localsbb;
7699         init_localsbb->next_bb = cfg->cbb;
7700         link_bblock (cfg, start_bblock, init_localsbb);
7701         link_bblock (cfg, init_localsbb, cfg->cbb);
7702
7703         cfg->cbb = init_localsbb;
7704
7705         if (cfg->gsharedvt && cfg->method == method) {
7706                 MonoGSharedVtMethodInfo *info;
7707                 MonoInst *var, *locals_var;
7708                 int dreg;
7709
7710                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7711                 info->method = cfg->method;
7712                 info->count_entries = 16;
7713                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7714                 cfg->gsharedvt_info = info;
7715
7716                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7717                 /* prevent it from being register allocated */
7718                 //var->flags |= MONO_INST_VOLATILE;
7719                 cfg->gsharedvt_info_var = var;
7720
7721                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7722                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7723
7724                 /* Allocate locals */
7725                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7726                 /* prevent it from being register allocated */
7727                 //locals_var->flags |= MONO_INST_VOLATILE;
7728                 cfg->gsharedvt_locals_var = locals_var;
7729
7730                 dreg = alloc_ireg (cfg);
7731                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7732
7733                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7734                 ins->dreg = locals_var->dreg;
7735                 ins->sreg1 = dreg;
7736                 MONO_ADD_INS (cfg->cbb, ins);
7737                 cfg->gsharedvt_locals_var_ins = ins;
7738
7739                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7740                 /*
7741                 if (init_locals)
7742                         ins->flags |= MONO_INST_INIT;
7743                 */
7744         }
7745
7746         if (mono_security_core_clr_enabled ()) {
7747                 /* check if this is native code, e.g. an icall or a p/invoke */
7748                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7749                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7750                         if (wrapped) {
7751                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7752                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7753
7754                                 /* if this ia a native call then it can only be JITted from platform code */
7755                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7756                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7757                                                 MonoException *ex = icall ? mono_get_exception_security () :
7758                                                         mono_get_exception_method_access ();
7759                                                 emit_throw_exception (cfg, ex);
7760                                         }
7761                                 }
7762                         }
7763                 }
7764         }
7765
7766         CHECK_CFG_EXCEPTION;
7767
7768         if (header->code_size == 0)
7769                 UNVERIFIED;
7770
7771         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7772                 ip = err_pos;
7773                 UNVERIFIED;
7774         }
7775
7776         if (cfg->method == method)
7777                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7778
7779         for (n = 0; n < header->num_locals; ++n) {
7780                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7781                         UNVERIFIED;
7782         }
7783         class_inits = NULL;
7784
7785         /* We force the vtable variable here for all shared methods
7786            for the possibility that they might show up in a stack
7787            trace where their exact instantiation is needed. */
7788         if (cfg->gshared && method == cfg->method) {
7789                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7790                                 mini_method_get_context (method)->method_inst ||
7791                                 method->klass->valuetype) {
7792                         mono_get_vtable_var (cfg);
7793                 } else {
7794                         /* FIXME: Is there a better way to do this?
7795                            We need the variable live for the duration
7796                            of the whole method. */
7797                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7798                 }
7799         }
7800
7801         /* add a check for this != NULL to inlined methods */
7802         if (is_virtual_call) {
7803                 MonoInst *arg_ins;
7804
7805                 NEW_ARGLOAD (cfg, arg_ins, 0);
7806                 MONO_ADD_INS (cfg->cbb, arg_ins);
7807                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7808         }
7809
7810         skip_dead_blocks = !dont_verify;
7811         if (skip_dead_blocks) {
7812                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7813                 CHECK_CFG_ERROR;
7814                 g_assert (bb);
7815         }
7816
7817         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7818         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7819
7820         ins_flag = 0;
7821         start_new_bblock = 0;
7822         while (ip < end) {
7823                 if (cfg->method == method)
7824                         cfg->real_offset = ip - header->code;
7825                 else
7826                         cfg->real_offset = inline_offset;
7827                 cfg->ip = ip;
7828
7829                 context_used = 0;
7830
7831                 if (start_new_bblock) {
7832                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7833                         if (start_new_bblock == 2) {
7834                                 g_assert (ip == tblock->cil_code);
7835                         } else {
7836                                 GET_BBLOCK (cfg, tblock, ip);
7837                         }
7838                         cfg->cbb->next_bb = tblock;
7839                         cfg->cbb = tblock;
7840                         start_new_bblock = 0;
7841                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7842                                 if (cfg->verbose_level > 3)
7843                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7844                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7845                                 *sp++ = ins;
7846                         }
7847                         if (class_inits)
7848                                 g_slist_free (class_inits);
7849                         class_inits = NULL;
7850                 } else {
7851                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7852                                 link_bblock (cfg, cfg->cbb, tblock);
7853                                 if (sp != stack_start) {
7854                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7855                                         sp = stack_start;
7856                                         CHECK_UNVERIFIABLE (cfg);
7857                                 }
7858                                 cfg->cbb->next_bb = tblock;
7859                                 cfg->cbb = tblock;
7860                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7861                                         if (cfg->verbose_level > 3)
7862                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7863                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7864                                         *sp++ = ins;
7865                                 }
7866                                 g_slist_free (class_inits);
7867                                 class_inits = NULL;
7868                         }
7869                 }
7870
7871                 if (skip_dead_blocks) {
7872                         int ip_offset = ip - header->code;
7873
7874                         if (ip_offset == bb->end)
7875                                 bb = bb->next;
7876
7877                         if (bb->dead) {
7878                                 int op_size = mono_opcode_size (ip, end);
7879                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7880
7881                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7882
7883                                 if (ip_offset + op_size == bb->end) {
7884                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7885                                         MONO_ADD_INS (cfg->cbb, ins);
7886                                         start_new_bblock = 1;
7887                                 }
7888
7889                                 ip += op_size;
7890                                 continue;
7891                         }
7892                 }
7893                 /*
7894                  * Sequence points are points where the debugger can place a breakpoint.
7895                  * Currently, we generate these automatically at points where the IL
7896                  * stack is empty.
7897                  */
7898                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7899                         /*
7900                          * Make methods interruptable at the beginning, and at the targets of
7901                          * backward branches.
7902                          * Also, do this at the start of every bblock in methods with clauses too,
7903                          * to be able to handle instructions with inprecise control flow like
7904                          * throw/endfinally.
7905                          * Backward branches are handled at the end of method-to-ir ().
7906                          */
7907                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7908                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7909
7910                         /* Avoid sequence points on empty IL like .volatile */
7911                         // FIXME: Enable this
7912                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7913                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7914                         if ((sp != stack_start) && !sym_seq_point)
7915                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7916                         MONO_ADD_INS (cfg->cbb, ins);
7917
7918                         if (sym_seq_points)
7919                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7920                 }
7921
7922                 cfg->cbb->real_offset = cfg->real_offset;
7923
7924                 if ((cfg->method == method) && cfg->coverage_info) {
7925                         guint32 cil_offset = ip - header->code;
7926                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7927
7928                         /* TODO: Use an increment here */
7929 #if defined(TARGET_X86)
7930                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
7931                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
7932                         ins->inst_imm = 1;
7933                         MONO_ADD_INS (cfg->cbb, ins);
7934 #else
7935                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
7936                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7937 #endif
7938                 }
7939
7940                 if (cfg->verbose_level > 3)
7941                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7942
7943                 switch (*ip) {
7944                 case CEE_NOP:
7945                         if (seq_points && !sym_seq_points && sp != stack_start) {
7946                                 /*
7947                                  * The C# compiler uses these nops to notify the JIT that it should
7948                                  * insert seq points.
7949                                  */
7950                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7951                                 MONO_ADD_INS (cfg->cbb, ins);
7952                         }
7953                         if (cfg->keep_cil_nops)
7954                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7955                         else
7956                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7957                         ip++;
7958                         MONO_ADD_INS (cfg->cbb, ins);
7959                         break;
7960                 case CEE_BREAK:
7961                         if (should_insert_brekpoint (cfg->method)) {
7962                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7963                         } else {
7964                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7965                         }
7966                         ip++;
7967                         MONO_ADD_INS (cfg->cbb, ins);
7968                         break;
7969                 case CEE_LDARG_0:
7970                 case CEE_LDARG_1:
7971                 case CEE_LDARG_2:
7972                 case CEE_LDARG_3:
7973                         CHECK_STACK_OVF (1);
7974                         n = (*ip)-CEE_LDARG_0;
7975                         CHECK_ARG (n);
7976                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7977                         ip++;
7978                         *sp++ = ins;
7979                         break;
7980                 case CEE_LDLOC_0:
7981                 case CEE_LDLOC_1:
7982                 case CEE_LDLOC_2:
7983                 case CEE_LDLOC_3:
7984                         CHECK_STACK_OVF (1);
7985                         n = (*ip)-CEE_LDLOC_0;
7986                         CHECK_LOCAL (n);
7987                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7988                         ip++;
7989                         *sp++ = ins;
7990                         break;
7991                 case CEE_STLOC_0:
7992                 case CEE_STLOC_1:
7993                 case CEE_STLOC_2:
7994                 case CEE_STLOC_3: {
7995                         CHECK_STACK (1);
7996                         n = (*ip)-CEE_STLOC_0;
7997                         CHECK_LOCAL (n);
7998                         --sp;
7999                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8000                                 UNVERIFIED;
8001                         emit_stloc_ir (cfg, sp, header, n);
8002                         ++ip;
8003                         inline_costs += 1;
8004                         break;
8005                         }
8006                 case CEE_LDARG_S:
8007                         CHECK_OPSIZE (2);
8008                         CHECK_STACK_OVF (1);
8009                         n = ip [1];
8010                         CHECK_ARG (n);
8011                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8012                         *sp++ = ins;
8013                         ip += 2;
8014                         break;
8015                 case CEE_LDARGA_S:
8016                         CHECK_OPSIZE (2);
8017                         CHECK_STACK_OVF (1);
8018                         n = ip [1];
8019                         CHECK_ARG (n);
8020                         NEW_ARGLOADA (cfg, ins, n);
8021                         MONO_ADD_INS (cfg->cbb, ins);
8022                         *sp++ = ins;
8023                         ip += 2;
8024                         break;
8025                 case CEE_STARG_S:
8026                         CHECK_OPSIZE (2);
8027                         CHECK_STACK (1);
8028                         --sp;
8029                         n = ip [1];
8030                         CHECK_ARG (n);
8031                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8032                                 UNVERIFIED;
8033                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8034                         ip += 2;
8035                         break;
8036                 case CEE_LDLOC_S:
8037                         CHECK_OPSIZE (2);
8038                         CHECK_STACK_OVF (1);
8039                         n = ip [1];
8040                         CHECK_LOCAL (n);
8041                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8042                         *sp++ = ins;
8043                         ip += 2;
8044                         break;
8045                 case CEE_LDLOCA_S: {
8046                         unsigned char *tmp_ip;
8047                         CHECK_OPSIZE (2);
8048                         CHECK_STACK_OVF (1);
8049                         CHECK_LOCAL (ip [1]);
8050
8051                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8052                                 ip = tmp_ip;
8053                                 inline_costs += 1;
8054                                 break;
8055                         }
8056
8057                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8058                         *sp++ = ins;
8059                         ip += 2;
8060                         break;
8061                 }
8062                 case CEE_STLOC_S:
8063                         CHECK_OPSIZE (2);
8064                         CHECK_STACK (1);
8065                         --sp;
8066                         CHECK_LOCAL (ip [1]);
8067                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8068                                 UNVERIFIED;
8069                         emit_stloc_ir (cfg, sp, header, ip [1]);
8070                         ip += 2;
8071                         inline_costs += 1;
8072                         break;
8073                 case CEE_LDNULL:
8074                         CHECK_STACK_OVF (1);
8075                         EMIT_NEW_PCONST (cfg, ins, NULL);
8076                         ins->type = STACK_OBJ;
8077                         ++ip;
8078                         *sp++ = ins;
8079                         break;
8080                 case CEE_LDC_I4_M1:
8081                         CHECK_STACK_OVF (1);
8082                         EMIT_NEW_ICONST (cfg, ins, -1);
8083                         ++ip;
8084                         *sp++ = ins;
8085                         break;
8086                 case CEE_LDC_I4_0:
8087                 case CEE_LDC_I4_1:
8088                 case CEE_LDC_I4_2:
8089                 case CEE_LDC_I4_3:
8090                 case CEE_LDC_I4_4:
8091                 case CEE_LDC_I4_5:
8092                 case CEE_LDC_I4_6:
8093                 case CEE_LDC_I4_7:
8094                 case CEE_LDC_I4_8:
8095                         CHECK_STACK_OVF (1);
8096                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8097                         ++ip;
8098                         *sp++ = ins;
8099                         break;
8100                 case CEE_LDC_I4_S:
8101                         CHECK_OPSIZE (2);
8102                         CHECK_STACK_OVF (1);
8103                         ++ip;
8104                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8105                         ++ip;
8106                         *sp++ = ins;
8107                         break;
8108                 case CEE_LDC_I4:
8109                         CHECK_OPSIZE (5);
8110                         CHECK_STACK_OVF (1);
8111                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8112                         ip += 5;
8113                         *sp++ = ins;
8114                         break;
8115                 case CEE_LDC_I8:
8116                         CHECK_OPSIZE (9);
8117                         CHECK_STACK_OVF (1);
8118                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8119                         ins->type = STACK_I8;
8120                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8121                         ++ip;
8122                         ins->inst_l = (gint64)read64 (ip);
8123                         MONO_ADD_INS (cfg->cbb, ins);
8124                         ip += 8;
8125                         *sp++ = ins;
8126                         break;
8127                 case CEE_LDC_R4: {
8128                         float *f;
8129                         gboolean use_aotconst = FALSE;
8130
8131 #ifdef TARGET_POWERPC
8132                         /* FIXME: Clean this up */
8133                         if (cfg->compile_aot)
8134                                 use_aotconst = TRUE;
8135 #endif
8136
8137                         /* FIXME: we should really allocate this only late in the compilation process */
8138                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8139                         CHECK_OPSIZE (5);
8140                         CHECK_STACK_OVF (1);
8141
8142                         if (use_aotconst) {
8143                                 MonoInst *cons;
8144                                 int dreg;
8145
8146                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8147
8148                                 dreg = alloc_freg (cfg);
8149                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8150                                 ins->type = cfg->r4_stack_type;
8151                         } else {
8152                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8153                                 ins->type = cfg->r4_stack_type;
8154                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8155                                 ins->inst_p0 = f;
8156                                 MONO_ADD_INS (cfg->cbb, ins);
8157                         }
8158                         ++ip;
8159                         readr4 (ip, f);
8160                         ip += 4;
8161                         *sp++ = ins;
8162                         break;
8163                 }
8164                 case CEE_LDC_R8: {
8165                         double *d;
8166                         gboolean use_aotconst = FALSE;
8167
8168 #ifdef TARGET_POWERPC
8169                         /* FIXME: Clean this up */
8170                         if (cfg->compile_aot)
8171                                 use_aotconst = TRUE;
8172 #endif
8173
8174                         /* FIXME: we should really allocate this only late in the compilation process */
8175                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8176                         CHECK_OPSIZE (9);
8177                         CHECK_STACK_OVF (1);
8178
8179                         if (use_aotconst) {
8180                                 MonoInst *cons;
8181                                 int dreg;
8182
8183                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8184
8185                                 dreg = alloc_freg (cfg);
8186                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8187                                 ins->type = STACK_R8;
8188                         } else {
8189                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8190                                 ins->type = STACK_R8;
8191                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8192                                 ins->inst_p0 = d;
8193                                 MONO_ADD_INS (cfg->cbb, ins);
8194                         }
8195                         ++ip;
8196                         readr8 (ip, d);
8197                         ip += 8;
8198                         *sp++ = ins;
8199                         break;
8200                 }
8201                 case CEE_DUP: {
8202                         MonoInst *temp, *store;
8203                         CHECK_STACK (1);
8204                         CHECK_STACK_OVF (1);
8205                         sp--;
8206                         ins = *sp;
8207
8208                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8209                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8210
8211                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8212                         *sp++ = ins;
8213
8214                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8215                         *sp++ = ins;
8216
8217                         ++ip;
8218                         inline_costs += 2;
8219                         break;
8220                 }
8221                 case CEE_POP:
8222                         CHECK_STACK (1);
8223                         ip++;
8224                         --sp;
8225
8226 #ifdef TARGET_X86
8227                         if (sp [0]->type == STACK_R8)
8228                                 /* we need to pop the value from the x86 FP stack */
8229                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8230 #endif
8231                         break;
8232                 case CEE_JMP: {
8233                         MonoCallInst *call;
8234                         MonoMethodSignature *fsig;
8235                         int i, n;
8236
8237                         INLINE_FAILURE ("jmp");
8238                         GSHAREDVT_FAILURE (*ip);
8239
8240                         CHECK_OPSIZE (5);
8241                         if (stack_start != sp)
8242                                 UNVERIFIED;
8243                         token = read32 (ip + 1);
8244                         /* FIXME: check the signature matches */
8245                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8246                         CHECK_CFG_ERROR;
8247
8248                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8249                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8250
8251                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8252
8253                         fsig = mono_method_signature (cmethod);
8254                         n = fsig->param_count + fsig->hasthis;
8255                         if (cfg->llvm_only) {
8256                                 MonoInst **args;
8257
8258                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8259                                 for (i = 0; i < n; ++i)
8260                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8261                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8262                                 /*
8263                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8264                                  * have to emit a normal return since llvm expects it.
8265                                  */
8266                                 if (cfg->ret)
8267                                         emit_setret (cfg, ins);
8268                                 MONO_INST_NEW (cfg, ins, OP_BR);
8269                                 ins->inst_target_bb = end_bblock;
8270                                 MONO_ADD_INS (cfg->cbb, ins);
8271                                 link_bblock (cfg, cfg->cbb, end_bblock);
8272                                 ip += 5;
8273                                 break;
8274                         } else if (cfg->backend->have_op_tail_call) {
8275                                 /* Handle tail calls similarly to calls */
8276                                 DISABLE_AOT (cfg);
8277
8278                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8279                                 call->method = cmethod;
8280                                 call->tail_call = TRUE;
8281                                 call->signature = mono_method_signature (cmethod);
8282                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8283                                 call->inst.inst_p0 = cmethod;
8284                                 for (i = 0; i < n; ++i)
8285                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8286
8287                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8288                                         call->vret_var = cfg->vret_addr;
8289
8290                                 mono_arch_emit_call (cfg, call);
8291                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8292                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8293                         } else {
8294                                 for (i = 0; i < num_args; ++i)
8295                                         /* Prevent arguments from being optimized away */
8296                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8297
8298                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8299                                 ins = (MonoInst*)call;
8300                                 ins->inst_p0 = cmethod;
8301                                 MONO_ADD_INS (cfg->cbb, ins);
8302                         }
8303
8304                         ip += 5;
8305                         start_new_bblock = 1;
8306                         break;
8307                 }
8308                 case CEE_CALLI: {
8309                         MonoInst *addr;
8310                         MonoMethodSignature *fsig;
8311
8312                         CHECK_OPSIZE (5);
8313                         token = read32 (ip + 1);
8314
8315                         ins = NULL;
8316
8317                         //GSHAREDVT_FAILURE (*ip);
8318                         cmethod = NULL;
8319                         CHECK_STACK (1);
8320                         --sp;
8321                         addr = *sp;
8322                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8323                         CHECK_CFG_ERROR;
8324
8325                         if (method->dynamic && fsig->pinvoke) {
8326                                 MonoInst *args [3];
8327
8328                                 /*
8329                                  * This is a call through a function pointer using a pinvoke
8330                                  * signature. Have to create a wrapper and call that instead.
8331                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8332                                  * instead based on the signature.
8333                                  */
8334                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8335                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8336                                 args [2] = addr;
8337                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8338                         }
8339
8340                         n = fsig->param_count + fsig->hasthis;
8341
8342                         CHECK_STACK (n);
8343
8344                         //g_assert (!virtual_ || fsig->hasthis);
8345
8346                         sp -= n;
8347
8348                         inline_costs += 10 * num_calls++;
8349
8350                         /*
8351                          * Making generic calls out of gsharedvt methods.
8352                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8353                          * patching gshared method addresses into a gsharedvt method.
8354                          */
8355                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8356                                 /*
8357                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8358                                  */
8359                                 MonoInst *callee = addr;
8360
8361                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8362                                         /* Not tested */
8363                                         GSHAREDVT_FAILURE (*ip);
8364
8365                                 if (cfg->llvm_only)
8366                                         // FIXME:
8367                                         GSHAREDVT_FAILURE (*ip);
8368
8369                                 addr = emit_get_rgctx_sig (cfg, context_used,
8370                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8371                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8372                                 goto calli_end;
8373                         }
8374
8375                         /* Prevent inlining of methods with indirect calls */
8376                         INLINE_FAILURE ("indirect call");
8377
8378                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8379                                 MonoJumpInfoType info_type;
8380                                 gpointer info_data;
8381
8382                                 /*
8383                                  * Instead of emitting an indirect call, emit a direct call
8384                                  * with the contents of the aotconst as the patch info.
8385                                  */
8386                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8387                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8388                                         info_data = addr->inst_p0;
8389                                 } else {
8390                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8391                                         info_data = addr->inst_right->inst_left;
8392                                 }
8393
8394                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8395                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8396                                         NULLIFY_INS (addr);
8397                                         goto calli_end;
8398                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8399                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8400                                         NULLIFY_INS (addr);
8401                                         goto calli_end;
8402                                 }
8403                         }
8404                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8405
8406                         calli_end:
8407
8408                         /* End of call, INS should contain the result of the call, if any */
8409
8410                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8411                                 g_assert (ins);
8412                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8413                         }
8414
8415                         CHECK_CFG_EXCEPTION;
8416
8417                         ip += 5;
8418                         ins_flag = 0;
8419                         constrained_class = NULL;
8420                         break;
8421                 }
8422                 case CEE_CALL:
8423                 case CEE_CALLVIRT: {
8424                         MonoInst *addr = NULL;
8425                         MonoMethodSignature *fsig = NULL;
8426                         int array_rank = 0;
8427                         int virtual_ = *ip == CEE_CALLVIRT;
8428                         gboolean pass_imt_from_rgctx = FALSE;
8429                         MonoInst *imt_arg = NULL;
8430                         MonoInst *keep_this_alive = NULL;
8431                         gboolean pass_vtable = FALSE;
8432                         gboolean pass_mrgctx = FALSE;
8433                         MonoInst *vtable_arg = NULL;
8434                         gboolean check_this = FALSE;
8435                         gboolean supported_tail_call = FALSE;
8436                         gboolean tail_call = FALSE;
8437                         gboolean need_seq_point = FALSE;
8438                         guint32 call_opcode = *ip;
8439                         gboolean emit_widen = TRUE;
8440                         gboolean push_res = TRUE;
8441                         gboolean skip_ret = FALSE;
8442                         gboolean delegate_invoke = FALSE;
8443                         gboolean direct_icall = FALSE;
8444                         gboolean constrained_partial_call = FALSE;
8445                         MonoMethod *cil_method;
8446
8447                         CHECK_OPSIZE (5);
8448                         token = read32 (ip + 1);
8449
8450                         ins = NULL;
8451
8452                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8453                         CHECK_CFG_ERROR;
8454
8455                         cil_method = cmethod;
8456
8457                         if (constrained_class) {
8458                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8459                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8460                                                 g_assert (!cmethod->klass->valuetype);
8461                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8462                                                         constrained_partial_call = TRUE;
8463                                         }
8464                                 }
8465
8466                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8467                                         if (cfg->verbose_level > 2)
8468                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8469                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8470                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8471                                                   cfg->gshared)) {
8472                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8473                                                 CHECK_CFG_ERROR;
8474                                         }
8475                                 } else {
8476                                         if (cfg->verbose_level > 2)
8477                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8478
8479                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8480                                                 /*
8481                                                  * This is needed since get_method_constrained can't find
8482                                                  * the method in klass representing a type var.
8483                                                  * The type var is guaranteed to be a reference type in this
8484                                                  * case.
8485                                                  */
8486                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8487                                                         g_assert (!cmethod->klass->valuetype);
8488                                         } else {
8489                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8490                                                 CHECK_CFG_ERROR;
8491                                         }
8492                                 }
8493
8494                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8495                                         /* Use the corresponding method from the base type to avoid boxing */
8496                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8497                                         g_assert (base_type);
8498                                         constrained_class = mono_class_from_mono_type (base_type);
8499                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8500                                         g_assert (cmethod);
8501                                 }
8502                         }
8503
8504                         if (!dont_verify && !cfg->skip_visibility) {
8505                                 MonoMethod *target_method = cil_method;
8506                                 if (method->is_inflated) {
8507                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8508                                         CHECK_CFG_ERROR;
8509                                 }
8510                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8511                                         !mono_method_can_access_method (method, cil_method))
8512                                         emit_method_access_failure (cfg, method, cil_method);
8513                         }
8514
8515                         if (mono_security_core_clr_enabled ())
8516                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8517
8518                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8519                                 /* MS.NET seems to silently convert this to a callvirt */
8520                                 virtual_ = 1;
8521
8522                         {
8523                                 /*
8524                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8525                                  * converts to a callvirt.
8526                                  *
8527                                  * tests/bug-515884.il is an example of this behavior
8528                                  */
8529                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8530                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8531                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8532                                         virtual_ = 1;
8533                         }
8534
8535                         if (!cmethod->klass->inited)
8536                                 if (!mono_class_init (cmethod->klass))
8537                                         TYPE_LOAD_ERROR (cmethod->klass);
8538
8539                         fsig = mono_method_signature (cmethod);
8540                         if (!fsig)
8541                                 LOAD_ERROR;
8542                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8543                                 mini_class_is_system_array (cmethod->klass)) {
8544                                 array_rank = cmethod->klass->rank;
8545                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8546                                 direct_icall = TRUE;
8547                         } else if (fsig->pinvoke) {
8548                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8549                                 fsig = mono_method_signature (wrapper);
8550                         } else if (constrained_class) {
8551                         } else {
8552                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8553                                 CHECK_CFG_ERROR;
8554                         }
8555
8556                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8557                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8558
8559                         /* See code below */
8560                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8561                                 MonoBasicBlock *tbb;
8562
8563                                 GET_BBLOCK (cfg, tbb, ip + 5);
8564                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8565                                         /*
8566                                          * We want to extend the try block to cover the call, but we can't do it if the
8567                                          * call is made directly since its followed by an exception check.
8568                                          */
8569                                         direct_icall = FALSE;
8570                                 }
8571                         }
8572
8573                         mono_save_token_info (cfg, image, token, cil_method);
8574
8575                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8576                                 need_seq_point = TRUE;
8577
8578                         /* Don't support calls made using type arguments for now */
8579                         /*
8580                           if (cfg->gsharedvt) {
8581                           if (mini_is_gsharedvt_signature (fsig))
8582                           GSHAREDVT_FAILURE (*ip);
8583                           }
8584                         */
8585
8586                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8587                                 g_assert_not_reached ();
8588
8589                         n = fsig->param_count + fsig->hasthis;
8590
8591                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8592                                 UNVERIFIED;
8593
8594                         if (!cfg->gshared)
8595                                 g_assert (!mono_method_check_context_used (cmethod));
8596
8597                         CHECK_STACK (n);
8598
8599                         //g_assert (!virtual_ || fsig->hasthis);
8600
8601                         sp -= n;
8602
8603                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8604                                 cfg->cbb->out_of_line = TRUE;
8605
8606                         /*
8607                          * We have the `constrained.' prefix opcode.
8608                          */
8609                         if (constrained_class) {
8610                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8611                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8612                                                 /* The 'Own method' case below */
8613                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8614                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8615                                         } else {
8616                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8617                                                 CHECK_CFG_EXCEPTION;
8618                                                 g_assert (ins);
8619                                                 goto call_end;
8620                                         }
8621                                 }
8622
8623                                 if (constrained_partial_call) {
8624                                         gboolean need_box = TRUE;
8625
8626                                         /*
8627                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8628                                          * called method is not known at compile time either. The called method could end up being
8629                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8630                                          * to box the receiver.
8631                                          * A simple solution would be to box always and make a normal virtual call, but that would
8632                                          * be bad performance wise.
8633                                          */
8634                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8635                                                 /*
8636                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8637                                                  */
8638                                                 need_box = FALSE;
8639                                         }
8640
8641                                         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)) {
8642                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8643                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8644                                                 ins->klass = constrained_class;
8645                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8646                                                 CHECK_CFG_EXCEPTION;
8647                                         } else if (need_box) {
8648                                                 MonoInst *box_type;
8649                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8650                                                 MonoInst *nonbox_call;
8651
8652                                                 /*
8653                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8654                                                  * if needed.
8655                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8656                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8657                                                  */
8658                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8659
8660                                                 NEW_BBLOCK (cfg, is_ref_bb);
8661                                                 NEW_BBLOCK (cfg, end_bb);
8662
8663                                                 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);
8664                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8665                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8666
8667                                                 /* Non-ref case */
8668                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8669
8670                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8671
8672                                                 /* Ref case */
8673                                                 MONO_START_BB (cfg, is_ref_bb);
8674                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8675                                                 ins->klass = constrained_class;
8676                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8677                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8678
8679                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8680
8681                                                 MONO_START_BB (cfg, end_bb);
8682                                                 cfg->cbb = end_bb;
8683
8684                                                 nonbox_call->dreg = ins->dreg;
8685                                                 goto call_end;
8686                                         } else {
8687                                                 g_assert (mono_class_is_interface (cmethod->klass));
8688                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8689                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8690                                                 goto call_end;
8691                                         }
8692                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8693                                         /*
8694                                          * The type parameter is instantiated as a valuetype,
8695                                          * but that type doesn't override the method we're
8696                                          * calling, so we need to box `this'.
8697                                          */
8698                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8699                                         ins->klass = constrained_class;
8700                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8701                                         CHECK_CFG_EXCEPTION;
8702                                 } else if (!constrained_class->valuetype) {
8703                                         int dreg = alloc_ireg_ref (cfg);
8704
8705                                         /*
8706                                          * The type parameter is instantiated as a reference
8707                                          * type.  We have a managed pointer on the stack, so
8708                                          * we need to dereference it here.
8709                                          */
8710                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8711                                         ins->type = STACK_OBJ;
8712                                         sp [0] = ins;
8713                                 } else {
8714                                         if (cmethod->klass->valuetype) {
8715                                                 /* Own method */
8716                                         } else {
8717                                                 /* Interface method */
8718                                                 int ioffset, slot;
8719
8720                                                 mono_class_setup_vtable (constrained_class);
8721                                                 CHECK_TYPELOAD (constrained_class);
8722                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8723                                                 if (ioffset == -1)
8724                                                         TYPE_LOAD_ERROR (constrained_class);
8725                                                 slot = mono_method_get_vtable_slot (cmethod);
8726                                                 if (slot == -1)
8727                                                         TYPE_LOAD_ERROR (cmethod->klass);
8728                                                 cmethod = constrained_class->vtable [ioffset + slot];
8729
8730                                                 if (cmethod->klass == mono_defaults.enum_class) {
8731                                                         /* Enum implements some interfaces, so treat this as the first case */
8732                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8733                                                         ins->klass = constrained_class;
8734                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8735                                                         CHECK_CFG_EXCEPTION;
8736                                                 }
8737                                         }
8738                                         virtual_ = 0;
8739                                 }
8740                                 constrained_class = NULL;
8741                         }
8742
8743                         if (check_call_signature (cfg, fsig, sp))
8744                                 UNVERIFIED;
8745
8746                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8747                                 delegate_invoke = TRUE;
8748
8749                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8750                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8751                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8752                                         emit_widen = FALSE;
8753                                 }
8754
8755                                 goto call_end;
8756                         }
8757
8758                         /*
8759                          * If the callee is a shared method, then its static cctor
8760                          * might not get called after the call was patched.
8761                          */
8762                         if (cfg->gshared && cmethod->klass != method->klass && mono_class_is_ginst (cmethod->klass) && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
8763                                 emit_class_init (cfg, cmethod->klass);
8764                                 CHECK_TYPELOAD (cmethod->klass);
8765                         }
8766
8767                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8768
8769                         if (cfg->gshared) {
8770                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8771
8772                                 context_used = mini_method_check_context_used (cfg, cmethod);
8773
8774                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8775                                         /* Generic method interface
8776                                            calls are resolved via a
8777                                            helper function and don't
8778                                            need an imt. */
8779                                         if (!cmethod_context || !cmethod_context->method_inst)
8780                                                 pass_imt_from_rgctx = TRUE;
8781                                 }
8782
8783                                 /*
8784                                  * If a shared method calls another
8785                                  * shared method then the caller must
8786                                  * have a generic sharing context
8787                                  * because the magic trampoline
8788                                  * requires it.  FIXME: We shouldn't
8789                                  * have to force the vtable/mrgctx
8790                                  * variable here.  Instead there
8791                                  * should be a flag in the cfg to
8792                                  * request a generic sharing context.
8793                                  */
8794                                 if (context_used &&
8795                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8796                                         mono_get_vtable_var (cfg);
8797                         }
8798
8799                         if (pass_vtable) {
8800                                 if (context_used) {
8801                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8802                                 } else {
8803                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8804
8805                                         CHECK_TYPELOAD (cmethod->klass);
8806                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8807                                 }
8808                         }
8809
8810                         if (pass_mrgctx) {
8811                                 g_assert (!vtable_arg);
8812
8813                                 if (!cfg->compile_aot) {
8814                                         /*
8815                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8816                                          * for type load errors before.
8817                                          */
8818                                         mono_class_setup_vtable (cmethod->klass);
8819                                         CHECK_TYPELOAD (cmethod->klass);
8820                                 }
8821
8822                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8823
8824                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8825                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8826                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8827                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8828                                         if (virtual_)
8829                                                 check_this = TRUE;
8830                                         virtual_ = 0;
8831                                 }
8832                         }
8833
8834                         if (pass_imt_from_rgctx) {
8835                                 g_assert (!pass_vtable);
8836
8837                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8838                                         cmethod, MONO_RGCTX_INFO_METHOD);
8839                         }
8840
8841                         if (check_this)
8842                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8843
8844                         /* Calling virtual generic methods */
8845                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8846                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8847                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8848                             fsig->generic_param_count &&
8849                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8850                                 !cfg->llvm_only) {
8851                                 MonoInst *this_temp, *this_arg_temp, *store;
8852                                 MonoInst *iargs [4];
8853
8854                                 g_assert (fsig->is_inflated);
8855
8856                                 /* Prevent inlining of methods that contain indirect calls */
8857                                 INLINE_FAILURE ("virtual generic call");
8858
8859                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8860                                         GSHAREDVT_FAILURE (*ip);
8861
8862                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8863                                         g_assert (!imt_arg);
8864                                         if (!context_used)
8865                                                 g_assert (cmethod->is_inflated);
8866                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8867                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8868                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8869                                 } else {
8870                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8871                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8872                                         MONO_ADD_INS (cfg->cbb, store);
8873
8874                                         /* FIXME: This should be a managed pointer */
8875                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8876
8877                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8878                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8879                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8880                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8881                                         addr = mono_emit_jit_icall (cfg,
8882                                                                                                 mono_helper_compile_generic_method, iargs);
8883
8884                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8885
8886                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8887                                 }
8888
8889                                 goto call_end;
8890                         }
8891
8892                         /*
8893                          * Implement a workaround for the inherent races involved in locking:
8894                          * Monitor.Enter ()
8895                          * try {
8896                          * } finally {
8897                          *    Monitor.Exit ()
8898                          * }
8899                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8900                          * try block, the Exit () won't be executed, see:
8901                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8902                          * To work around this, we extend such try blocks to include the last x bytes
8903                          * of the Monitor.Enter () call.
8904                          */
8905                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8906                                 MonoBasicBlock *tbb;
8907
8908                                 GET_BBLOCK (cfg, tbb, ip + 5);
8909                                 /*
8910                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8911                                  * from Monitor.Enter like ArgumentNullException.
8912                                  */
8913                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8914                                         /* Mark this bblock as needing to be extended */
8915                                         tbb->extend_try_block = TRUE;
8916                                 }
8917                         }
8918
8919                         /* Conversion to a JIT intrinsic */
8920                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8921                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8922                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8923                                         emit_widen = FALSE;
8924                                 }
8925                                 goto call_end;
8926                         }
8927                         CHECK_CFG_ERROR;
8928
8929                         /* Inlining */
8930                         if ((cfg->opt & MONO_OPT_INLINE) &&
8931                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8932                             mono_method_check_inlining (cfg, cmethod)) {
8933                                 int costs;
8934                                 gboolean always = FALSE;
8935
8936                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8937                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8938                                         /* Prevent inlining of methods that call wrappers */
8939                                         INLINE_FAILURE ("wrapper call");
8940                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8941                                         always = TRUE;
8942                                 }
8943
8944                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8945                                 if (costs) {
8946                                         cfg->real_offset += 5;
8947
8948                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8949                                                 /* *sp is already set by inline_method */
8950                                                 sp++;
8951                                                 push_res = FALSE;
8952                                         }
8953
8954                                         inline_costs += costs;
8955
8956                                         goto call_end;
8957                                 }
8958                         }
8959
8960                         /* Tail recursion elimination */
8961                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8962                                 gboolean has_vtargs = FALSE;
8963                                 int i;
8964
8965                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8966                                 INLINE_FAILURE ("tail call");
8967
8968                                 /* keep it simple */
8969                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8970                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8971                                                 has_vtargs = TRUE;
8972                                 }
8973
8974                                 if (!has_vtargs) {
8975                                         if (need_seq_point) {
8976                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8977                                                 need_seq_point = FALSE;
8978                                         }
8979                                         for (i = 0; i < n; ++i)
8980                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8981                                         MONO_INST_NEW (cfg, ins, OP_BR);
8982                                         MONO_ADD_INS (cfg->cbb, ins);
8983                                         tblock = start_bblock->out_bb [0];
8984                                         link_bblock (cfg, cfg->cbb, tblock);
8985                                         ins->inst_target_bb = tblock;
8986                                         start_new_bblock = 1;
8987
8988                                         /* skip the CEE_RET, too */
8989                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8990                                                 skip_ret = TRUE;
8991                                         push_res = FALSE;
8992                                         goto call_end;
8993                                 }
8994                         }
8995
8996                         inline_costs += 10 * num_calls++;
8997
8998                         /*
8999                          * Synchronized wrappers.
9000                          * Its hard to determine where to replace a method with its synchronized
9001                          * wrapper without causing an infinite recursion. The current solution is
9002                          * to add the synchronized wrapper in the trampolines, and to
9003                          * change the called method to a dummy wrapper, and resolve that wrapper
9004                          * to the real method in mono_jit_compile_method ().
9005                          */
9006                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9007                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9008                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9009                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9010                         }
9011
9012                         /*
9013                          * Making generic calls out of gsharedvt methods.
9014                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9015                          * patching gshared method addresses into a gsharedvt method.
9016                          */
9017                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
9018                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9019                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9020                                 MonoRgctxInfoType info_type;
9021
9022                                 if (virtual_) {
9023                                         //if (mono_class_is_interface (cmethod->klass))
9024                                                 //GSHAREDVT_FAILURE (*ip);
9025                                         // disable for possible remoting calls
9026                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9027                                                 GSHAREDVT_FAILURE (*ip);
9028                                         if (fsig->generic_param_count) {
9029                                                 /* virtual generic call */
9030                                                 g_assert (!imt_arg);
9031                                                 /* Same as the virtual generic case above */
9032                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9033                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9034                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9035                                                 vtable_arg = NULL;
9036                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
9037                                                 /* This can happen when we call a fully instantiated iface method */
9038                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9039                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9040                                                 vtable_arg = NULL;
9041                                         }
9042                                 }
9043
9044                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9045                                         keep_this_alive = sp [0];
9046
9047                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9048                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9049                                 else
9050                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9051                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9052
9053                                 if (cfg->llvm_only) {
9054                                         // FIXME: Avoid initializing vtable_arg
9055                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9056                                 } else {
9057                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9058                                 }
9059                                 goto call_end;
9060                         }
9061
9062                         /* Generic sharing */
9063
9064                         /*
9065                          * Use this if the callee is gsharedvt sharable too, since
9066                          * at runtime we might find an instantiation so the call cannot
9067                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9068                          */
9069                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9070                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9071                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9072                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9073                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9074                                 INLINE_FAILURE ("gshared");
9075
9076                                 g_assert (cfg->gshared && cmethod);
9077                                 g_assert (!addr);
9078
9079                                 /*
9080                                  * We are compiling a call to a
9081                                  * generic method from shared code,
9082                                  * which means that we have to look up
9083                                  * the method in the rgctx and do an
9084                                  * indirect call.
9085                                  */
9086                                 if (fsig->hasthis)
9087                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9088
9089                                 if (cfg->llvm_only) {
9090                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9091                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9092                                         else
9093                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9094                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9095                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9096                                 } else {
9097                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9098                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9099                                 }
9100                                 goto call_end;
9101                         }
9102
9103                         /* Direct calls to icalls */
9104                         if (direct_icall) {
9105                                 MonoMethod *wrapper;
9106                                 int costs;
9107
9108                                 /* Inline the wrapper */
9109                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9110
9111                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9112                                 g_assert (costs > 0);
9113                                 cfg->real_offset += 5;
9114
9115                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9116                                         /* *sp is already set by inline_method */
9117                                         sp++;
9118                                         push_res = FALSE;
9119                                 }
9120
9121                                 inline_costs += costs;
9122
9123                                 goto call_end;
9124                         }
9125
9126                         /* Array methods */
9127                         if (array_rank) {
9128                                 MonoInst *addr;
9129
9130                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9131                                         MonoInst *val = sp [fsig->param_count];
9132
9133                                         if (val->type == STACK_OBJ) {
9134                                                 MonoInst *iargs [2];
9135
9136                                                 iargs [0] = sp [0];
9137                                                 iargs [1] = val;
9138
9139                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9140                                         }
9141
9142                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9143                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9144                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
9145                                                 mini_emit_write_barrier (cfg, addr, val);
9146                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9147                                                 GSHAREDVT_FAILURE (*ip);
9148                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9149                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9150
9151                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9152                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9153                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9154                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9155                                         CHECK_TYPELOAD (cmethod->klass);
9156
9157                                         readonly = FALSE;
9158                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9159                                         ins = addr;
9160                                 } else {
9161                                         g_assert_not_reached ();
9162                                 }
9163
9164                                 emit_widen = FALSE;
9165                                 goto call_end;
9166                         }
9167
9168                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9169                         if (ins)
9170                                 goto call_end;
9171
9172                         /* Tail prefix / tail call optimization */
9173
9174                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9175                         /* FIXME: runtime generic context pointer for jumps? */
9176                         /* FIXME: handle this for generic sharing eventually */
9177                         if ((ins_flag & MONO_INST_TAILCALL) &&
9178                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9179                                 supported_tail_call = TRUE;
9180
9181                         if (supported_tail_call) {
9182                                 MonoCallInst *call;
9183
9184                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9185                                 INLINE_FAILURE ("tail call");
9186
9187                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9188
9189                                 if (cfg->backend->have_op_tail_call) {
9190                                         /* Handle tail calls similarly to normal calls */
9191                                         tail_call = TRUE;
9192                                 } else {
9193                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9194
9195                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9196                                         call->tail_call = TRUE;
9197                                         call->method = cmethod;
9198                                         call->signature = mono_method_signature (cmethod);
9199
9200                                         /*
9201                                          * We implement tail calls by storing the actual arguments into the
9202                                          * argument variables, then emitting a CEE_JMP.
9203                                          */
9204                                         for (i = 0; i < n; ++i) {
9205                                                 /* Prevent argument from being register allocated */
9206                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9207                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9208                                         }
9209                                         ins = (MonoInst*)call;
9210                                         ins->inst_p0 = cmethod;
9211                                         ins->inst_p1 = arg_array [0];
9212                                         MONO_ADD_INS (cfg->cbb, ins);
9213                                         link_bblock (cfg, cfg->cbb, end_bblock);
9214                                         start_new_bblock = 1;
9215
9216                                         // FIXME: Eliminate unreachable epilogs
9217
9218                                         /*
9219                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9220                                          * only reachable from this call.
9221                                          */
9222                                         GET_BBLOCK (cfg, tblock, ip + 5);
9223                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9224                                                 skip_ret = TRUE;
9225                                         push_res = FALSE;
9226
9227                                         goto call_end;
9228                                 }
9229                         }
9230
9231                         /*
9232                          * Virtual calls in llvm-only mode.
9233                          */
9234                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9235                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9236                                 goto call_end;
9237                         }
9238
9239                         /* Common call */
9240                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9241                                 INLINE_FAILURE ("call");
9242                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9243                                                                                           imt_arg, vtable_arg);
9244
9245                         if (tail_call && !cfg->llvm_only) {
9246                                 link_bblock (cfg, cfg->cbb, end_bblock);
9247                                 start_new_bblock = 1;
9248
9249                                 // FIXME: Eliminate unreachable epilogs
9250
9251                                 /*
9252                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9253                                  * only reachable from this call.
9254                                  */
9255                                 GET_BBLOCK (cfg, tblock, ip + 5);
9256                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9257                                         skip_ret = TRUE;
9258                                 push_res = FALSE;
9259                         }
9260
9261                         call_end:
9262
9263                         /* End of call, INS should contain the result of the call, if any */
9264
9265                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9266                                 g_assert (ins);
9267                                 if (emit_widen)
9268                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9269                                 else
9270                                         *sp++ = ins;
9271                         }
9272
9273                         if (keep_this_alive) {
9274                                 MonoInst *dummy_use;
9275
9276                                 /* See mono_emit_method_call_full () */
9277                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9278                         }
9279
9280                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9281                                 /*
9282                                  * Clang can convert these calls to tail calls which screw up the stack
9283                                  * walk. This happens even when the -fno-optimize-sibling-calls
9284                                  * option is passed to clang.
9285                                  * Work around this by emitting a dummy call.
9286                                  */
9287                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9288                         }
9289
9290                         CHECK_CFG_EXCEPTION;
9291
9292                         ip += 5;
9293                         if (skip_ret) {
9294                                 g_assert (*ip == CEE_RET);
9295                                 ip += 1;
9296                         }
9297                         ins_flag = 0;
9298                         constrained_class = NULL;
9299                         if (need_seq_point)
9300                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9301                         break;
9302                 }
9303                 case CEE_RET:
9304                         if (cfg->method != method) {
9305                                 /* return from inlined method */
9306                                 /*
9307                                  * If in_count == 0, that means the ret is unreachable due to
9308                                  * being preceeded by a throw. In that case, inline_method () will
9309                                  * handle setting the return value
9310                                  * (test case: test_0_inline_throw ()).
9311                                  */
9312                                 if (return_var && cfg->cbb->in_count) {
9313                                         MonoType *ret_type = mono_method_signature (method)->ret;
9314
9315                                         MonoInst *store;
9316                                         CHECK_STACK (1);
9317                                         --sp;
9318
9319                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9320                                                 UNVERIFIED;
9321
9322                                         //g_assert (returnvar != -1);
9323                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9324                                         cfg->ret_var_set = TRUE;
9325                                 }
9326                         } else {
9327                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9328
9329                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9330                                         emit_pop_lmf (cfg);
9331
9332                                 if (cfg->ret) {
9333                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9334
9335                                         if (seq_points && !sym_seq_points) {
9336                                                 /*
9337                                                  * Place a seq point here too even through the IL stack is not
9338                                                  * empty, so a step over on
9339                                                  * call <FOO>
9340                                                  * ret
9341                                                  * will work correctly.
9342                                                  */
9343                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9344                                                 MONO_ADD_INS (cfg->cbb, ins);
9345                                         }
9346
9347                                         g_assert (!return_var);
9348                                         CHECK_STACK (1);
9349                                         --sp;
9350
9351                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9352                                                 UNVERIFIED;
9353
9354                                         emit_setret (cfg, *sp);
9355                                 }
9356                         }
9357                         if (sp != stack_start)
9358                                 UNVERIFIED;
9359                         MONO_INST_NEW (cfg, ins, OP_BR);
9360                         ip++;
9361                         ins->inst_target_bb = end_bblock;
9362                         MONO_ADD_INS (cfg->cbb, ins);
9363                         link_bblock (cfg, cfg->cbb, end_bblock);
9364                         start_new_bblock = 1;
9365                         break;
9366                 case CEE_BR_S:
9367                         CHECK_OPSIZE (2);
9368                         MONO_INST_NEW (cfg, ins, OP_BR);
9369                         ip++;
9370                         target = ip + 1 + (signed char)(*ip);
9371                         ++ip;
9372                         GET_BBLOCK (cfg, tblock, target);
9373                         link_bblock (cfg, cfg->cbb, tblock);
9374                         ins->inst_target_bb = tblock;
9375                         if (sp != stack_start) {
9376                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9377                                 sp = stack_start;
9378                                 CHECK_UNVERIFIABLE (cfg);
9379                         }
9380                         MONO_ADD_INS (cfg->cbb, ins);
9381                         start_new_bblock = 1;
9382                         inline_costs += BRANCH_COST;
9383                         break;
9384                 case CEE_BEQ_S:
9385                 case CEE_BGE_S:
9386                 case CEE_BGT_S:
9387                 case CEE_BLE_S:
9388                 case CEE_BLT_S:
9389                 case CEE_BNE_UN_S:
9390                 case CEE_BGE_UN_S:
9391                 case CEE_BGT_UN_S:
9392                 case CEE_BLE_UN_S:
9393                 case CEE_BLT_UN_S:
9394                         CHECK_OPSIZE (2);
9395                         CHECK_STACK (2);
9396                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9397                         ip++;
9398                         target = ip + 1 + *(signed char*)ip;
9399                         ip++;
9400
9401                         ADD_BINCOND (NULL);
9402
9403                         sp = stack_start;
9404                         inline_costs += BRANCH_COST;
9405                         break;
9406                 case CEE_BR:
9407                         CHECK_OPSIZE (5);
9408                         MONO_INST_NEW (cfg, ins, OP_BR);
9409                         ip++;
9410
9411                         target = ip + 4 + (gint32)read32(ip);
9412                         ip += 4;
9413                         GET_BBLOCK (cfg, tblock, target);
9414                         link_bblock (cfg, cfg->cbb, tblock);
9415                         ins->inst_target_bb = tblock;
9416                         if (sp != stack_start) {
9417                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9418                                 sp = stack_start;
9419                                 CHECK_UNVERIFIABLE (cfg);
9420                         }
9421
9422                         MONO_ADD_INS (cfg->cbb, ins);
9423
9424                         start_new_bblock = 1;
9425                         inline_costs += BRANCH_COST;
9426                         break;
9427                 case CEE_BRFALSE_S:
9428                 case CEE_BRTRUE_S:
9429                 case CEE_BRFALSE:
9430                 case CEE_BRTRUE: {
9431                         MonoInst *cmp;
9432                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9433                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9434                         guint32 opsize = is_short ? 1 : 4;
9435
9436                         CHECK_OPSIZE (opsize);
9437                         CHECK_STACK (1);
9438                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9439                                 UNVERIFIED;
9440                         ip ++;
9441                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9442                         ip += opsize;
9443
9444                         sp--;
9445
9446                         GET_BBLOCK (cfg, tblock, target);
9447                         link_bblock (cfg, cfg->cbb, tblock);
9448                         GET_BBLOCK (cfg, tblock, ip);
9449                         link_bblock (cfg, cfg->cbb, tblock);
9450
9451                         if (sp != stack_start) {
9452                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9453                                 CHECK_UNVERIFIABLE (cfg);
9454                         }
9455
9456                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9457                         cmp->sreg1 = sp [0]->dreg;
9458                         type_from_op (cfg, cmp, sp [0], NULL);
9459                         CHECK_TYPE (cmp);
9460
9461 #if SIZEOF_REGISTER == 4
9462                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9463                                 /* Convert it to OP_LCOMPARE */
9464                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9465                                 ins->type = STACK_I8;
9466                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9467                                 ins->inst_l = 0;
9468                                 MONO_ADD_INS (cfg->cbb, ins);
9469                                 cmp->opcode = OP_LCOMPARE;
9470                                 cmp->sreg2 = ins->dreg;
9471                         }
9472 #endif
9473                         MONO_ADD_INS (cfg->cbb, cmp);
9474
9475                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9476                         type_from_op (cfg, ins, sp [0], NULL);
9477                         MONO_ADD_INS (cfg->cbb, ins);
9478                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9479                         GET_BBLOCK (cfg, tblock, target);
9480                         ins->inst_true_bb = tblock;
9481                         GET_BBLOCK (cfg, tblock, ip);
9482                         ins->inst_false_bb = tblock;
9483                         start_new_bblock = 2;
9484
9485                         sp = stack_start;
9486                         inline_costs += BRANCH_COST;
9487                         break;
9488                 }
9489                 case CEE_BEQ:
9490                 case CEE_BGE:
9491                 case CEE_BGT:
9492                 case CEE_BLE:
9493                 case CEE_BLT:
9494                 case CEE_BNE_UN:
9495                 case CEE_BGE_UN:
9496                 case CEE_BGT_UN:
9497                 case CEE_BLE_UN:
9498                 case CEE_BLT_UN:
9499                         CHECK_OPSIZE (5);
9500                         CHECK_STACK (2);
9501                         MONO_INST_NEW (cfg, ins, *ip);
9502                         ip++;
9503                         target = ip + 4 + (gint32)read32(ip);
9504                         ip += 4;
9505
9506                         ADD_BINCOND (NULL);
9507
9508                         sp = stack_start;
9509                         inline_costs += BRANCH_COST;
9510                         break;
9511                 case CEE_SWITCH: {
9512                         MonoInst *src1;
9513                         MonoBasicBlock **targets;
9514                         MonoBasicBlock *default_bblock;
9515                         MonoJumpInfoBBTable *table;
9516                         int offset_reg = alloc_preg (cfg);
9517                         int target_reg = alloc_preg (cfg);
9518                         int table_reg = alloc_preg (cfg);
9519                         int sum_reg = alloc_preg (cfg);
9520                         gboolean use_op_switch;
9521
9522                         CHECK_OPSIZE (5);
9523                         CHECK_STACK (1);
9524                         n = read32 (ip + 1);
9525                         --sp;
9526                         src1 = sp [0];
9527                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9528                                 UNVERIFIED;
9529
9530                         ip += 5;
9531                         CHECK_OPSIZE (n * sizeof (guint32));
9532                         target = ip + n * sizeof (guint32);
9533
9534                         GET_BBLOCK (cfg, default_bblock, target);
9535                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9536
9537                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9538                         for (i = 0; i < n; ++i) {
9539                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9540                                 targets [i] = tblock;
9541                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9542                                 ip += 4;
9543                         }
9544
9545                         if (sp != stack_start) {
9546                                 /*
9547                                  * Link the current bb with the targets as well, so handle_stack_args
9548                                  * will set their in_stack correctly.
9549                                  */
9550                                 link_bblock (cfg, cfg->cbb, default_bblock);
9551                                 for (i = 0; i < n; ++i)
9552                                         link_bblock (cfg, cfg->cbb, targets [i]);
9553
9554                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9555                                 sp = stack_start;
9556                                 CHECK_UNVERIFIABLE (cfg);
9557
9558                                 /* Undo the links */
9559                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9560                                 for (i = 0; i < n; ++i)
9561                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9562                         }
9563
9564                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9565                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9566
9567                         for (i = 0; i < n; ++i)
9568                                 link_bblock (cfg, cfg->cbb, targets [i]);
9569
9570                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9571                         table->table = targets;
9572                         table->table_size = n;
9573
9574                         use_op_switch = FALSE;
9575 #ifdef TARGET_ARM
9576                         /* ARM implements SWITCH statements differently */
9577                         /* FIXME: Make it use the generic implementation */
9578                         if (!cfg->compile_aot)
9579                                 use_op_switch = TRUE;
9580 #endif
9581
9582                         if (COMPILE_LLVM (cfg))
9583                                 use_op_switch = TRUE;
9584
9585                         cfg->cbb->has_jump_table = 1;
9586
9587                         if (use_op_switch) {
9588                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9589                                 ins->sreg1 = src1->dreg;
9590                                 ins->inst_p0 = table;
9591                                 ins->inst_many_bb = targets;
9592                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9593                                 MONO_ADD_INS (cfg->cbb, ins);
9594                         } else {
9595                                 if (sizeof (gpointer) == 8)
9596                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9597                                 else
9598                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9599
9600 #if SIZEOF_REGISTER == 8
9601                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9602                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9603 #endif
9604
9605                                 if (cfg->compile_aot) {
9606                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9607                                 } else {
9608                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9609                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9610                                         ins->inst_p0 = table;
9611                                         ins->dreg = table_reg;
9612                                         MONO_ADD_INS (cfg->cbb, ins);
9613                                 }
9614
9615                                 /* FIXME: Use load_memindex */
9616                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9617                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9618                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9619                         }
9620                         start_new_bblock = 1;
9621                         inline_costs += (BRANCH_COST * 2);
9622                         break;
9623                 }
9624                 case CEE_LDIND_I1:
9625                 case CEE_LDIND_U1:
9626                 case CEE_LDIND_I2:
9627                 case CEE_LDIND_U2:
9628                 case CEE_LDIND_I4:
9629                 case CEE_LDIND_U4:
9630                 case CEE_LDIND_I8:
9631                 case CEE_LDIND_I:
9632                 case CEE_LDIND_R4:
9633                 case CEE_LDIND_R8:
9634                 case CEE_LDIND_REF:
9635                         CHECK_STACK (1);
9636                         --sp;
9637
9638                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9639                         *sp++ = ins;
9640                         ins_flag = 0;
9641                         ++ip;
9642                         break;
9643                 case CEE_STIND_REF:
9644                 case CEE_STIND_I1:
9645                 case CEE_STIND_I2:
9646                 case CEE_STIND_I4:
9647                 case CEE_STIND_I8:
9648                 case CEE_STIND_R4:
9649                 case CEE_STIND_R8:
9650                 case CEE_STIND_I:
9651                         CHECK_STACK (2);
9652                         sp -= 2;
9653
9654                         if (ins_flag & MONO_INST_VOLATILE) {
9655                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9656                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9657                         }
9658
9659                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9660                         ins->flags |= ins_flag;
9661                         ins_flag = 0;
9662
9663                         MONO_ADD_INS (cfg->cbb, ins);
9664
9665                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9666                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9667
9668                         inline_costs += 1;
9669                         ++ip;
9670                         break;
9671
9672                 case CEE_MUL:
9673                         CHECK_STACK (2);
9674
9675                         MONO_INST_NEW (cfg, ins, (*ip));
9676                         sp -= 2;
9677                         ins->sreg1 = sp [0]->dreg;
9678                         ins->sreg2 = sp [1]->dreg;
9679                         type_from_op (cfg, ins, sp [0], sp [1]);
9680                         CHECK_TYPE (ins);
9681                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9682
9683                         /* Use the immediate opcodes if possible */
9684                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9685                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9686                                 if (imm_opcode != -1) {
9687                                         ins->opcode = imm_opcode;
9688                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9689                                         ins->sreg2 = -1;
9690
9691                                         NULLIFY_INS (sp [1]);
9692                                 }
9693                         }
9694
9695                         MONO_ADD_INS ((cfg)->cbb, (ins));
9696
9697                         *sp++ = mono_decompose_opcode (cfg, ins);
9698                         ip++;
9699                         break;
9700                 case CEE_ADD:
9701                 case CEE_SUB:
9702                 case CEE_DIV:
9703                 case CEE_DIV_UN:
9704                 case CEE_REM:
9705                 case CEE_REM_UN:
9706                 case CEE_AND:
9707                 case CEE_OR:
9708                 case CEE_XOR:
9709                 case CEE_SHL:
9710                 case CEE_SHR:
9711                 case CEE_SHR_UN:
9712                         CHECK_STACK (2);
9713
9714                         MONO_INST_NEW (cfg, ins, (*ip));
9715                         sp -= 2;
9716                         ins->sreg1 = sp [0]->dreg;
9717                         ins->sreg2 = sp [1]->dreg;
9718                         type_from_op (cfg, ins, sp [0], sp [1]);
9719                         CHECK_TYPE (ins);
9720                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9721                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9722
9723                         /* FIXME: Pass opcode to is_inst_imm */
9724
9725                         /* Use the immediate opcodes if possible */
9726                         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)) {
9727                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9728                                 if (imm_opcode != -1) {
9729                                         ins->opcode = imm_opcode;
9730                                         if (sp [1]->opcode == OP_I8CONST) {
9731 #if SIZEOF_REGISTER == 8
9732                                                 ins->inst_imm = sp [1]->inst_l;
9733 #else
9734                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9735                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9736 #endif
9737                                         }
9738                                         else
9739                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9740                                         ins->sreg2 = -1;
9741
9742                                         /* Might be followed by an instruction added by add_widen_op */
9743                                         if (sp [1]->next == NULL)
9744                                                 NULLIFY_INS (sp [1]);
9745                                 }
9746                         }
9747                         MONO_ADD_INS ((cfg)->cbb, (ins));
9748
9749                         *sp++ = mono_decompose_opcode (cfg, ins);
9750                         ip++;
9751                         break;
9752                 case CEE_NEG:
9753                 case CEE_NOT:
9754                 case CEE_CONV_I1:
9755                 case CEE_CONV_I2:
9756                 case CEE_CONV_I4:
9757                 case CEE_CONV_R4:
9758                 case CEE_CONV_R8:
9759                 case CEE_CONV_U4:
9760                 case CEE_CONV_I8:
9761                 case CEE_CONV_U8:
9762                 case CEE_CONV_OVF_I8:
9763                 case CEE_CONV_OVF_U8:
9764                 case CEE_CONV_R_UN:
9765                         CHECK_STACK (1);
9766
9767                         /* Special case this earlier so we have long constants in the IR */
9768                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9769                                 int data = sp [-1]->inst_c0;
9770                                 sp [-1]->opcode = OP_I8CONST;
9771                                 sp [-1]->type = STACK_I8;
9772 #if SIZEOF_REGISTER == 8
9773                                 if ((*ip) == CEE_CONV_U8)
9774                                         sp [-1]->inst_c0 = (guint32)data;
9775                                 else
9776                                         sp [-1]->inst_c0 = data;
9777 #else
9778                                 sp [-1]->inst_ls_word = data;
9779                                 if ((*ip) == CEE_CONV_U8)
9780                                         sp [-1]->inst_ms_word = 0;
9781                                 else
9782                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9783 #endif
9784                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9785                         }
9786                         else {
9787                                 ADD_UNOP (*ip);
9788                         }
9789                         ip++;
9790                         break;
9791                 case CEE_CONV_OVF_I4:
9792                 case CEE_CONV_OVF_I1:
9793                 case CEE_CONV_OVF_I2:
9794                 case CEE_CONV_OVF_I:
9795                 case CEE_CONV_OVF_U:
9796                         CHECK_STACK (1);
9797
9798                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9799                                 ADD_UNOP (CEE_CONV_OVF_I8);
9800                                 ADD_UNOP (*ip);
9801                         } else {
9802                                 ADD_UNOP (*ip);
9803                         }
9804                         ip++;
9805                         break;
9806                 case CEE_CONV_OVF_U1:
9807                 case CEE_CONV_OVF_U2:
9808                 case CEE_CONV_OVF_U4:
9809                         CHECK_STACK (1);
9810
9811                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9812                                 ADD_UNOP (CEE_CONV_OVF_U8);
9813                                 ADD_UNOP (*ip);
9814                         } else {
9815                                 ADD_UNOP (*ip);
9816                         }
9817                         ip++;
9818                         break;
9819                 case CEE_CONV_OVF_I1_UN:
9820                 case CEE_CONV_OVF_I2_UN:
9821                 case CEE_CONV_OVF_I4_UN:
9822                 case CEE_CONV_OVF_I8_UN:
9823                 case CEE_CONV_OVF_U1_UN:
9824                 case CEE_CONV_OVF_U2_UN:
9825                 case CEE_CONV_OVF_U4_UN:
9826                 case CEE_CONV_OVF_U8_UN:
9827                 case CEE_CONV_OVF_I_UN:
9828                 case CEE_CONV_OVF_U_UN:
9829                 case CEE_CONV_U2:
9830                 case CEE_CONV_U1:
9831                 case CEE_CONV_I:
9832                 case CEE_CONV_U:
9833                         CHECK_STACK (1);
9834                         ADD_UNOP (*ip);
9835                         CHECK_CFG_EXCEPTION;
9836                         ip++;
9837                         break;
9838                 case CEE_ADD_OVF:
9839                 case CEE_ADD_OVF_UN:
9840                 case CEE_MUL_OVF:
9841                 case CEE_MUL_OVF_UN:
9842                 case CEE_SUB_OVF:
9843                 case CEE_SUB_OVF_UN:
9844                         CHECK_STACK (2);
9845                         ADD_BINOP (*ip);
9846                         ip++;
9847                         break;
9848                 case CEE_CPOBJ:
9849                         GSHAREDVT_FAILURE (*ip);
9850                         CHECK_OPSIZE (5);
9851                         CHECK_STACK (2);
9852                         token = read32 (ip + 1);
9853                         klass = mini_get_class (method, token, generic_context);
9854                         CHECK_TYPELOAD (klass);
9855                         sp -= 2;
9856                         if (generic_class_is_reference_type (cfg, klass)) {
9857                                 MonoInst *store, *load;
9858                                 int dreg = alloc_ireg_ref (cfg);
9859
9860                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
9861                                 load->flags |= ins_flag;
9862                                 MONO_ADD_INS (cfg->cbb, load);
9863
9864                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
9865                                 store->flags |= ins_flag;
9866                                 MONO_ADD_INS (cfg->cbb, store);
9867
9868                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
9869                                         mini_emit_write_barrier (cfg, sp [0], sp [1]);
9870                         } else {
9871                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
9872                         }
9873                         ins_flag = 0;
9874                         ip += 5;
9875                         break;
9876                 case CEE_LDOBJ: {
9877                         int loc_index = -1;
9878                         int stloc_len = 0;
9879
9880                         CHECK_OPSIZE (5);
9881                         CHECK_STACK (1);
9882                         --sp;
9883                         token = read32 (ip + 1);
9884                         klass = mini_get_class (method, token, generic_context);
9885                         CHECK_TYPELOAD (klass);
9886
9887                         /* Optimize the common ldobj+stloc combination */
9888                         switch (ip [5]) {
9889                         case CEE_STLOC_S:
9890                                 loc_index = ip [6];
9891                                 stloc_len = 2;
9892                                 break;
9893                         case CEE_STLOC_0:
9894                         case CEE_STLOC_1:
9895                         case CEE_STLOC_2:
9896                         case CEE_STLOC_3:
9897                                 loc_index = ip [5] - CEE_STLOC_0;
9898                                 stloc_len = 1;
9899                                 break;
9900                         default:
9901                                 break;
9902                         }
9903
9904                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9905                                 CHECK_LOCAL (loc_index);
9906
9907                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9908                                 ins->dreg = cfg->locals [loc_index]->dreg;
9909                                 ins->flags |= ins_flag;
9910                                 ip += 5;
9911                                 ip += stloc_len;
9912                                 if (ins_flag & MONO_INST_VOLATILE) {
9913                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9914                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9915                                 }
9916                                 ins_flag = 0;
9917                                 break;
9918                         }
9919
9920                         /* Optimize the ldobj+stobj combination */
9921                         /* The reference case ends up being a load+store anyway */
9922                         /* Skip this if the operation is volatile. */
9923                         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)) {
9924                                 CHECK_STACK (1);
9925
9926                                 sp --;
9927
9928                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
9929
9930                                 ip += 5 + 5;
9931                                 ins_flag = 0;
9932                                 break;
9933                         }
9934
9935                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9936                         *sp++ = ins;
9937
9938                         ip += 5;
9939                         ins_flag = 0;
9940                         inline_costs += 1;
9941                         break;
9942                 }
9943                 case CEE_LDSTR:
9944                         CHECK_STACK_OVF (1);
9945                         CHECK_OPSIZE (5);
9946                         n = read32 (ip + 1);
9947
9948                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9949                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9950                                 ins->type = STACK_OBJ;
9951                                 *sp = ins;
9952                         }
9953                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9954                                 MonoInst *iargs [1];
9955                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9956
9957                                 if (cfg->compile_aot)
9958                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9959                                 else
9960                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9961                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9962                         } else {
9963                                 if (cfg->opt & MONO_OPT_SHARED) {
9964                                         MonoInst *iargs [3];
9965
9966                                         if (cfg->compile_aot) {
9967                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9968                                         }
9969                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9970                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9971                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9972                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9973                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9974                                         CHECK_CFG_ERROR;
9975                                 } else {
9976                                         if (cfg->cbb->out_of_line) {
9977                                                 MonoInst *iargs [2];
9978
9979                                                 if (image == mono_defaults.corlib) {
9980                                                         /*
9981                                                          * Avoid relocations in AOT and save some space by using a
9982                                                          * version of helper_ldstr specialized to mscorlib.
9983                                                          */
9984                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9985                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9986                                                 } else {
9987                                                         /* Avoid creating the string object */
9988                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9989                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9990                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9991                                                 }
9992                                         }
9993                                         else
9994                                         if (cfg->compile_aot) {
9995                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9996                                                 *sp = ins;
9997                                                 MONO_ADD_INS (cfg->cbb, ins);
9998                                         }
9999                                         else {
10000                                                 NEW_PCONST (cfg, ins, NULL);
10001                                                 ins->type = STACK_OBJ;
10002                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10003                                                 CHECK_CFG_ERROR;
10004
10005                                                 if (!ins->inst_p0)
10006                                                         OUT_OF_MEMORY_FAILURE;
10007
10008                                                 *sp = ins;
10009                                                 MONO_ADD_INS (cfg->cbb, ins);
10010                                         }
10011                                 }
10012                         }
10013
10014                         sp++;
10015                         ip += 5;
10016                         break;
10017                 case CEE_NEWOBJ: {
10018                         MonoInst *iargs [2];
10019                         MonoMethodSignature *fsig;
10020                         MonoInst this_ins;
10021                         MonoInst *alloc;
10022                         MonoInst *vtable_arg = NULL;
10023
10024                         CHECK_OPSIZE (5);
10025                         token = read32 (ip + 1);
10026                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10027                         CHECK_CFG_ERROR;
10028
10029                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10030                         CHECK_CFG_ERROR;
10031
10032                         mono_save_token_info (cfg, image, token, cmethod);
10033
10034                         if (!mono_class_init (cmethod->klass))
10035                                 TYPE_LOAD_ERROR (cmethod->klass);
10036
10037                         context_used = mini_method_check_context_used (cfg, cmethod);
10038
10039                         if (!dont_verify && !cfg->skip_visibility) {
10040                                 MonoMethod *cil_method = cmethod;
10041                                 MonoMethod *target_method = cil_method;
10042
10043                                 if (method->is_inflated) {
10044                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
10045                                         CHECK_CFG_ERROR;
10046                                 }
10047
10048                                 if (!mono_method_can_access_method (method_definition, target_method) &&
10049                                         !mono_method_can_access_method (method, cil_method))
10050                                         emit_method_access_failure (cfg, method, cil_method);
10051                         }
10052
10053                         if (mono_security_core_clr_enabled ())
10054                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10055
10056                         if (cfg->gshared && cmethod && cmethod->klass != method->klass && mono_class_is_ginst (cmethod->klass) && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
10057                                 emit_class_init (cfg, cmethod->klass);
10058                                 CHECK_TYPELOAD (cmethod->klass);
10059                         }
10060
10061                         /*
10062                         if (cfg->gsharedvt) {
10063                                 if (mini_is_gsharedvt_variable_signature (sig))
10064                                         GSHAREDVT_FAILURE (*ip);
10065                         }
10066                         */
10067
10068                         n = fsig->param_count;
10069                         CHECK_STACK (n);
10070
10071                         /*
10072                          * Generate smaller code for the common newobj <exception> instruction in
10073                          * argument checking code.
10074                          */
10075                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10076                                 is_exception_class (cmethod->klass) && n <= 2 &&
10077                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10078                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10079                                 MonoInst *iargs [3];
10080
10081                                 sp -= n;
10082
10083                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10084                                 switch (n) {
10085                                 case 0:
10086                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10087                                         break;
10088                                 case 1:
10089                                         iargs [1] = sp [0];
10090                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10091                                         break;
10092                                 case 2:
10093                                         iargs [1] = sp [0];
10094                                         iargs [2] = sp [1];
10095                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10096                                         break;
10097                                 default:
10098                                         g_assert_not_reached ();
10099                                 }
10100
10101                                 ip += 5;
10102                                 inline_costs += 5;
10103                                 break;
10104                         }
10105
10106                         /* move the args to allow room for 'this' in the first position */
10107                         while (n--) {
10108                                 --sp;
10109                                 sp [1] = sp [0];
10110                         }
10111
10112                         /* check_call_signature () requires sp[0] to be set */
10113                         this_ins.type = STACK_OBJ;
10114                         sp [0] = &this_ins;
10115                         if (check_call_signature (cfg, fsig, sp))
10116                                 UNVERIFIED;
10117
10118                         iargs [0] = NULL;
10119
10120                         if (mini_class_is_system_array (cmethod->klass)) {
10121                                 *sp = emit_get_rgctx_method (cfg, context_used,
10122                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10123
10124                                 /* Avoid varargs in the common case */
10125                                 if (fsig->param_count == 1)
10126                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10127                                 else if (fsig->param_count == 2)
10128                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10129                                 else if (fsig->param_count == 3)
10130                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10131                                 else if (fsig->param_count == 4)
10132                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10133                                 else
10134                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10135                         } else if (cmethod->string_ctor) {
10136                                 g_assert (!context_used);
10137                                 g_assert (!vtable_arg);
10138                                 /* we simply pass a null pointer */
10139                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10140                                 /* now call the string ctor */
10141                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10142                         } else {
10143                                 if (cmethod->klass->valuetype) {
10144                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10145                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10146                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10147
10148                                         alloc = NULL;
10149
10150                                         /*
10151                                          * The code generated by mini_emit_virtual_call () expects
10152                                          * iargs [0] to be a boxed instance, but luckily the vcall
10153                                          * will be transformed into a normal call there.
10154                                          */
10155                                 } else if (context_used) {
10156                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10157                                         *sp = alloc;
10158                                 } else {
10159                                         MonoVTable *vtable = NULL;
10160
10161                                         if (!cfg->compile_aot)
10162                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10163                                         CHECK_TYPELOAD (cmethod->klass);
10164
10165                                         /*
10166                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10167                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10168                                          * As a workaround, we call class cctors before allocating objects.
10169                                          */
10170                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10171                                                 emit_class_init (cfg, cmethod->klass);
10172                                                 if (cfg->verbose_level > 2)
10173                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10174                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10175                                         }
10176
10177                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10178                                         *sp = alloc;
10179                                 }
10180                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10181
10182                                 if (alloc)
10183                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10184
10185                                 /* Now call the actual ctor */
10186                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10187                                 CHECK_CFG_EXCEPTION;
10188                         }
10189
10190                         if (alloc == NULL) {
10191                                 /* Valuetype */
10192                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10193                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10194                                 *sp++= ins;
10195                         } else {
10196                                 *sp++ = alloc;
10197                         }
10198
10199                         ip += 5;
10200                         inline_costs += 5;
10201                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10202                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10203                         break;
10204                 }
10205                 case CEE_CASTCLASS:
10206                 case CEE_ISINST: {
10207                         CHECK_STACK (1);
10208                         --sp;
10209                         CHECK_OPSIZE (5);
10210                         token = read32 (ip + 1);
10211                         klass = mini_get_class (method, token, generic_context);
10212                         CHECK_TYPELOAD (klass);
10213                         if (sp [0]->type != STACK_OBJ)
10214                                 UNVERIFIED;
10215
10216                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10217                         ins->dreg = alloc_preg (cfg);
10218                         ins->sreg1 = (*sp)->dreg;
10219                         ins->klass = klass;
10220                         ins->type = STACK_OBJ;
10221                         MONO_ADD_INS (cfg->cbb, ins);
10222
10223                         CHECK_CFG_EXCEPTION;
10224                         *sp++ = ins;
10225                         ip += 5;
10226
10227                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10228                         break;
10229                 }
10230                 case CEE_UNBOX_ANY: {
10231                         MonoInst *res, *addr;
10232
10233                         CHECK_STACK (1);
10234                         --sp;
10235                         CHECK_OPSIZE (5);
10236                         token = read32 (ip + 1);
10237                         klass = mini_get_class (method, token, generic_context);
10238                         CHECK_TYPELOAD (klass);
10239
10240                         mono_save_token_info (cfg, image, token, klass);
10241
10242                         context_used = mini_class_check_context_used (cfg, klass);
10243
10244                         if (mini_is_gsharedvt_klass (klass)) {
10245                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10246                                 inline_costs += 2;
10247                         } else if (generic_class_is_reference_type (cfg, klass)) {
10248                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10249                                         EMIT_NEW_PCONST (cfg, res, NULL);
10250                                         res->type = STACK_OBJ;
10251                                 } else {
10252                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10253                                         res->dreg = alloc_preg (cfg);
10254                                         res->sreg1 = (*sp)->dreg;
10255                                         res->klass = klass;
10256                                         res->type = STACK_OBJ;
10257                                         MONO_ADD_INS (cfg->cbb, res);
10258                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10259                                 }
10260                         } else if (mono_class_is_nullable (klass)) {
10261                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10262                         } else {
10263                                 addr = handle_unbox (cfg, klass, sp, context_used);
10264                                 /* LDOBJ */
10265                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10266                                 res = ins;
10267                                 inline_costs += 2;
10268                         }
10269
10270                         *sp ++ = res;
10271                         ip += 5;
10272                         break;
10273                 }
10274                 case CEE_BOX: {
10275                         MonoInst *val;
10276                         MonoClass *enum_class;
10277                         MonoMethod *has_flag;
10278
10279                         CHECK_STACK (1);
10280                         --sp;
10281                         val = *sp;
10282                         CHECK_OPSIZE (5);
10283                         token = read32 (ip + 1);
10284                         klass = mini_get_class (method, token, generic_context);
10285                         CHECK_TYPELOAD (klass);
10286
10287                         mono_save_token_info (cfg, image, token, klass);
10288
10289                         context_used = mini_class_check_context_used (cfg, klass);
10290
10291                         if (generic_class_is_reference_type (cfg, klass)) {
10292                                 *sp++ = val;
10293                                 ip += 5;
10294                                 break;
10295                         }
10296
10297                         if (klass == mono_defaults.void_class)
10298                                 UNVERIFIED;
10299                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10300                                 UNVERIFIED;
10301                         /* frequent check in generic code: box (struct), brtrue */
10302
10303                         /*
10304                          * Look for:
10305                          *
10306                          *   <push int/long ptr>
10307                          *   <push int/long>
10308                          *   box MyFlags
10309                          *   constrained. MyFlags
10310                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10311                          *
10312                          * If we find this sequence and the operand types on box and constrained
10313                          * are equal, we can emit a specialized instruction sequence instead of
10314                          * the very slow HasFlag () call.
10315                          */
10316                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10317                             /* Cheap checks first. */
10318                             ip + 5 + 6 + 5 < end &&
10319                             ip [5] == CEE_PREFIX1 &&
10320                             ip [6] == CEE_CONSTRAINED_ &&
10321                             ip [11] == CEE_CALLVIRT &&
10322                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10323                             mono_class_is_enum (klass) &&
10324                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10325                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10326                             has_flag->klass == mono_defaults.enum_class &&
10327                             !strcmp (has_flag->name, "HasFlag") &&
10328                             has_flag->signature->hasthis &&
10329                             has_flag->signature->param_count == 1) {
10330                                 CHECK_TYPELOAD (enum_class);
10331
10332                                 if (enum_class == klass) {
10333                                         MonoInst *enum_this, *enum_flag;
10334
10335                                         ip += 5 + 6 + 5;
10336                                         --sp;
10337
10338                                         enum_this = sp [0];
10339                                         enum_flag = sp [1];
10340
10341                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10342                                         break;
10343                                 }
10344                         }
10345
10346                         // FIXME: LLVM can't handle the inconsistent bb linking
10347                         if (!mono_class_is_nullable (klass) &&
10348                                 !mini_is_gsharedvt_klass (klass) &&
10349                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10350                                 (ip [5] == CEE_BRTRUE ||
10351                                  ip [5] == CEE_BRTRUE_S ||
10352                                  ip [5] == CEE_BRFALSE ||
10353                                  ip [5] == CEE_BRFALSE_S)) {
10354                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10355                                 int dreg;
10356                                 MonoBasicBlock *true_bb, *false_bb;
10357
10358                                 ip += 5;
10359
10360                                 if (cfg->verbose_level > 3) {
10361                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10362                                         printf ("<box+brtrue opt>\n");
10363                                 }
10364
10365                                 switch (*ip) {
10366                                 case CEE_BRTRUE_S:
10367                                 case CEE_BRFALSE_S:
10368                                         CHECK_OPSIZE (2);
10369                                         ip++;
10370                                         target = ip + 1 + (signed char)(*ip);
10371                                         ip++;
10372                                         break;
10373                                 case CEE_BRTRUE:
10374                                 case CEE_BRFALSE:
10375                                         CHECK_OPSIZE (5);
10376                                         ip++;
10377                                         target = ip + 4 + (gint)(read32 (ip));
10378                                         ip += 4;
10379                                         break;
10380                                 default:
10381                                         g_assert_not_reached ();
10382                                 }
10383
10384                                 /*
10385                                  * We need to link both bblocks, since it is needed for handling stack
10386                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10387                                  * Branching to only one of them would lead to inconsistencies, so
10388                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10389                                  */
10390                                 GET_BBLOCK (cfg, true_bb, target);
10391                                 GET_BBLOCK (cfg, false_bb, ip);
10392
10393                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10394                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10395
10396                                 if (sp != stack_start) {
10397                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10398                                         sp = stack_start;
10399                                         CHECK_UNVERIFIABLE (cfg);
10400                                 }
10401
10402                                 if (COMPILE_LLVM (cfg)) {
10403                                         dreg = alloc_ireg (cfg);
10404                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10405                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10406
10407                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10408                                 } else {
10409                                         /* The JIT can't eliminate the iconst+compare */
10410                                         MONO_INST_NEW (cfg, ins, OP_BR);
10411                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10412                                         MONO_ADD_INS (cfg->cbb, ins);
10413                                 }
10414
10415                                 start_new_bblock = 1;
10416                                 break;
10417                         }
10418
10419                         *sp++ = handle_box (cfg, val, klass, context_used);
10420
10421                         CHECK_CFG_EXCEPTION;
10422                         ip += 5;
10423                         inline_costs += 1;
10424                         break;
10425                 }
10426                 case CEE_UNBOX: {
10427                         CHECK_STACK (1);
10428                         --sp;
10429                         CHECK_OPSIZE (5);
10430                         token = read32 (ip + 1);
10431                         klass = mini_get_class (method, token, generic_context);
10432                         CHECK_TYPELOAD (klass);
10433
10434                         mono_save_token_info (cfg, image, token, klass);
10435
10436                         context_used = mini_class_check_context_used (cfg, klass);
10437
10438                         if (mono_class_is_nullable (klass)) {
10439                                 MonoInst *val;
10440
10441                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10442                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10443
10444                                 *sp++= ins;
10445                         } else {
10446                                 ins = handle_unbox (cfg, klass, sp, context_used);
10447                                 *sp++ = ins;
10448                         }
10449                         ip += 5;
10450                         inline_costs += 2;
10451                         break;
10452                 }
10453                 case CEE_LDFLD:
10454                 case CEE_LDFLDA:
10455                 case CEE_STFLD:
10456                 case CEE_LDSFLD:
10457                 case CEE_LDSFLDA:
10458                 case CEE_STSFLD: {
10459                         MonoClassField *field;
10460 #ifndef DISABLE_REMOTING
10461                         int costs;
10462 #endif
10463                         guint foffset;
10464                         gboolean is_instance;
10465                         int op;
10466                         gpointer addr = NULL;
10467                         gboolean is_special_static;
10468                         MonoType *ftype;
10469                         MonoInst *store_val = NULL;
10470                         MonoInst *thread_ins;
10471
10472                         op = *ip;
10473                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10474                         if (is_instance) {
10475                                 if (op == CEE_STFLD) {
10476                                         CHECK_STACK (2);
10477                                         sp -= 2;
10478                                         store_val = sp [1];
10479                                 } else {
10480                                         CHECK_STACK (1);
10481                                         --sp;
10482                                 }
10483                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10484                                         UNVERIFIED;
10485                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10486                                         UNVERIFIED;
10487                         } else {
10488                                 if (op == CEE_STSFLD) {
10489                                         CHECK_STACK (1);
10490                                         sp--;
10491                                         store_val = sp [0];
10492                                 }
10493                         }
10494
10495                         CHECK_OPSIZE (5);
10496                         token = read32 (ip + 1);
10497                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10498                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10499                                 klass = field->parent;
10500                         }
10501                         else {
10502                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10503                                 CHECK_CFG_ERROR;
10504                         }
10505                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10506                                 FIELD_ACCESS_FAILURE (method, field);
10507                         mono_class_init (klass);
10508
10509                         /* if the class is Critical then transparent code cannot access it's fields */
10510                         if (!is_instance && mono_security_core_clr_enabled ())
10511                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10512
10513                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10514                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10515                         if (mono_security_core_clr_enabled ())
10516                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10517                         */
10518
10519                         ftype = mono_field_get_type (field);
10520
10521                         /*
10522                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10523                          * the static case.
10524                          */
10525                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10526                                 switch (op) {
10527                                 case CEE_LDFLD:
10528                                         op = CEE_LDSFLD;
10529                                         break;
10530                                 case CEE_STFLD:
10531                                         op = CEE_STSFLD;
10532                                         break;
10533                                 case CEE_LDFLDA:
10534                                         op = CEE_LDSFLDA;
10535                                         break;
10536                                 default:
10537                                         g_assert_not_reached ();
10538                                 }
10539                                 is_instance = FALSE;
10540                         }
10541
10542                         context_used = mini_class_check_context_used (cfg, klass);
10543
10544                         /* INSTANCE CASE */
10545
10546                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10547                         if (op == CEE_STFLD) {
10548                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10549                                         UNVERIFIED;
10550 #ifndef DISABLE_REMOTING
10551                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10552                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10553                                         MonoInst *iargs [5];
10554
10555                                         GSHAREDVT_FAILURE (op);
10556
10557                                         iargs [0] = sp [0];
10558                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10559                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10560                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10561                                                     field->offset);
10562                                         iargs [4] = sp [1];
10563
10564                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10565                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10566                                                                                            iargs, ip, cfg->real_offset, TRUE);
10567                                                 CHECK_CFG_EXCEPTION;
10568                                                 g_assert (costs > 0);
10569
10570                                                 cfg->real_offset += 5;
10571
10572                                                 inline_costs += costs;
10573                                         } else {
10574                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10575                                         }
10576                                 } else
10577 #endif
10578                                 {
10579                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10580
10581                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10582
10583                                         if (ins_flag & MONO_INST_VOLATILE) {
10584                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10585                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10586                                         }
10587
10588                                         if (mini_is_gsharedvt_klass (klass)) {
10589                                                 MonoInst *offset_ins;
10590
10591                                                 context_used = mini_class_check_context_used (cfg, klass);
10592
10593                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10594                                                 /* The value is offset by 1 */
10595                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10596                                                 dreg = alloc_ireg_mp (cfg);
10597                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10598                                                 wbarrier_ptr_ins = ins;
10599                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
10600                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10601                                         } else {
10602                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10603                                         }
10604                                         if (sp [0]->opcode != OP_LDADDR)
10605                                                 store->flags |= MONO_INST_FAULT;
10606
10607                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10608                                                 if (mini_is_gsharedvt_klass (klass)) {
10609                                                         g_assert (wbarrier_ptr_ins);
10610                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10611                                                 } else {
10612                                                         /* insert call to write barrier */
10613                                                         MonoInst *ptr;
10614                                                         int dreg;
10615
10616                                                         dreg = alloc_ireg_mp (cfg);
10617                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10618                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10619                                                 }
10620                                         }
10621
10622                                         store->flags |= ins_flag;
10623                                 }
10624                                 ins_flag = 0;
10625                                 ip += 5;
10626                                 break;
10627                         }
10628
10629 #ifndef DISABLE_REMOTING
10630                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10631                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10632                                 MonoInst *iargs [4];
10633
10634                                 GSHAREDVT_FAILURE (op);
10635
10636                                 iargs [0] = sp [0];
10637                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10638                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10639                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10640                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10641                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10642                                                                                    iargs, ip, cfg->real_offset, TRUE);
10643                                         CHECK_CFG_EXCEPTION;
10644                                         g_assert (costs > 0);
10645
10646                                         cfg->real_offset += 5;
10647
10648                                         *sp++ = iargs [0];
10649
10650                                         inline_costs += costs;
10651                                 } else {
10652                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10653                                         *sp++ = ins;
10654                                 }
10655                         } else
10656 #endif
10657                         if (is_instance) {
10658                                 if (sp [0]->type == STACK_VTYPE) {
10659                                         MonoInst *var;
10660
10661                                         /* Have to compute the address of the variable */
10662
10663                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10664                                         if (!var)
10665                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10666                                         else
10667                                                 g_assert (var->klass == klass);
10668
10669                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10670                                         sp [0] = ins;
10671                                 }
10672
10673                                 if (op == CEE_LDFLDA) {
10674                                         if (sp [0]->type == STACK_OBJ) {
10675                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10676                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10677                                         }
10678
10679                                         dreg = alloc_ireg_mp (cfg);
10680
10681                                         if (mini_is_gsharedvt_klass (klass)) {
10682                                                 MonoInst *offset_ins;
10683
10684                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10685                                                 /* The value is offset by 1 */
10686                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10687                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10688                                         } else {
10689                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10690                                         }
10691                                         ins->klass = mono_class_from_mono_type (field->type);
10692                                         ins->type = STACK_MP;
10693                                         *sp++ = ins;
10694                                 } else {
10695                                         MonoInst *load;
10696
10697                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10698
10699                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10700                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10701                                                 if (ins) {
10702                                                         *sp++ = ins;
10703                                                         ins_flag = 0;
10704                                                         ip += 5;
10705                                                         break;
10706                                                 }
10707                                         }
10708
10709                                         MonoInst *field_add_inst = sp [0];
10710                                         if (mini_is_gsharedvt_klass (klass)) {
10711                                                 MonoInst *offset_ins;
10712
10713                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10714                                                 /* The value is offset by 1 */
10715                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10716                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10717                                                 foffset = 0;
10718                                         }
10719
10720                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10721
10722                                         if (sp [0]->opcode != OP_LDADDR)
10723                                                 load->flags |= MONO_INST_FAULT;
10724                                         *sp++ = load;
10725                                 }
10726                         }
10727
10728                         if (is_instance) {
10729                                 ins_flag = 0;
10730                                 ip += 5;
10731                                 break;
10732                         }
10733
10734                         /* STATIC CASE */
10735                         context_used = mini_class_check_context_used (cfg, klass);
10736
10737                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10738                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10739                                 CHECK_CFG_ERROR;
10740                         }
10741
10742                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10743                          * to be called here.
10744                          */
10745                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10746                                 mono_class_vtable (cfg->domain, klass);
10747                                 CHECK_TYPELOAD (klass);
10748                         }
10749                         mono_domain_lock (cfg->domain);
10750                         if (cfg->domain->special_static_fields)
10751                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10752                         mono_domain_unlock (cfg->domain);
10753
10754                         is_special_static = mono_class_field_is_special_static (field);
10755
10756                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10757                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10758                         else
10759                                 thread_ins = NULL;
10760
10761                         /* Generate IR to compute the field address */
10762                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10763                                 /*
10764                                  * Fast access to TLS data
10765                                  * Inline version of get_thread_static_data () in
10766                                  * threads.c.
10767                                  */
10768                                 guint32 offset;
10769                                 int idx, static_data_reg, array_reg, dreg;
10770
10771                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10772                                         GSHAREDVT_FAILURE (op);
10773
10774                                 static_data_reg = alloc_ireg (cfg);
10775                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10776
10777                                 if (cfg->compile_aot) {
10778                                         int offset_reg, offset2_reg, idx_reg;
10779
10780                                         /* For TLS variables, this will return the TLS offset */
10781                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10782                                         offset_reg = ins->dreg;
10783                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10784                                         idx_reg = alloc_ireg (cfg);
10785                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10786                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10787                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10788                                         array_reg = alloc_ireg (cfg);
10789                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10790                                         offset2_reg = alloc_ireg (cfg);
10791                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10792                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10793                                         dreg = alloc_ireg (cfg);
10794                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10795                                 } else {
10796                                         offset = (gsize)addr & 0x7fffffff;
10797                                         idx = offset & 0x3f;
10798
10799                                         array_reg = alloc_ireg (cfg);
10800                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10801                                         dreg = alloc_ireg (cfg);
10802                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10803                                 }
10804                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10805                                         (cfg->compile_aot && is_special_static) ||
10806                                         (context_used && is_special_static)) {
10807                                 MonoInst *iargs [2];
10808
10809                                 g_assert (field->parent);
10810                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10811                                 if (context_used) {
10812                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10813                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10814                                 } else {
10815                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10816                                 }
10817                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10818                         } else if (context_used) {
10819                                 MonoInst *static_data;
10820
10821                                 /*
10822                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10823                                         method->klass->name_space, method->klass->name, method->name,
10824                                         depth, field->offset);
10825                                 */
10826
10827                                 if (mono_class_needs_cctor_run (klass, method))
10828                                         emit_class_init (cfg, klass);
10829
10830                                 /*
10831                                  * The pointer we're computing here is
10832                                  *
10833                                  *   super_info.static_data + field->offset
10834                                  */
10835                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10836                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10837
10838                                 if (mini_is_gsharedvt_klass (klass)) {
10839                                         MonoInst *offset_ins;
10840
10841                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10842                                         /* The value is offset by 1 */
10843                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10844                                         dreg = alloc_ireg_mp (cfg);
10845                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10846                                 } else if (field->offset == 0) {
10847                                         ins = static_data;
10848                                 } else {
10849                                         int addr_reg = mono_alloc_preg (cfg);
10850                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10851                                 }
10852                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10853                                 MonoInst *iargs [2];
10854
10855                                 g_assert (field->parent);
10856                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10857                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10858                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10859                         } else {
10860                                 MonoVTable *vtable = NULL;
10861
10862                                 if (!cfg->compile_aot)
10863                                         vtable = mono_class_vtable (cfg->domain, klass);
10864                                 CHECK_TYPELOAD (klass);
10865
10866                                 if (!addr) {
10867                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10868                                                 if (!(g_slist_find (class_inits, klass))) {
10869                                                         emit_class_init (cfg, klass);
10870                                                         if (cfg->verbose_level > 2)
10871                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10872                                                         class_inits = g_slist_prepend (class_inits, klass);
10873                                                 }
10874                                         } else {
10875                                                 if (cfg->run_cctors) {
10876                                                         /* This makes so that inline cannot trigger */
10877                                                         /* .cctors: too many apps depend on them */
10878                                                         /* running with a specific order... */
10879                                                         g_assert (vtable);
10880                                                         if (! vtable->initialized)
10881                                                                 INLINE_FAILURE ("class init");
10882                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10883                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10884                                                                 goto exception_exit;
10885                                                         }
10886                                                 }
10887                                         }
10888                                         if (cfg->compile_aot)
10889                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10890                                         else {
10891                                                 g_assert (vtable);
10892                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10893                                                 g_assert (addr);
10894                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10895                                         }
10896                                 } else {
10897                                         MonoInst *iargs [1];
10898                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10899                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10900                                 }
10901                         }
10902
10903                         /* Generate IR to do the actual load/store operation */
10904
10905                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10906                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10907                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10908                         }
10909
10910                         if (op == CEE_LDSFLDA) {
10911                                 ins->klass = mono_class_from_mono_type (ftype);
10912                                 ins->type = STACK_PTR;
10913                                 *sp++ = ins;
10914                         } else if (op == CEE_STSFLD) {
10915                                 MonoInst *store;
10916
10917                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10918                                 store->flags |= ins_flag;
10919                         } else {
10920                                 gboolean is_const = FALSE;
10921                                 MonoVTable *vtable = NULL;
10922                                 gpointer addr = NULL;
10923
10924                                 if (!context_used) {
10925                                         vtable = mono_class_vtable (cfg->domain, klass);
10926                                         CHECK_TYPELOAD (klass);
10927                                 }
10928                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10929                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10930                                         int ro_type = ftype->type;
10931                                         if (!addr)
10932                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10933                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10934                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10935                                         }
10936
10937                                         GSHAREDVT_FAILURE (op);
10938
10939                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10940                                         is_const = TRUE;
10941                                         switch (ro_type) {
10942                                         case MONO_TYPE_BOOLEAN:
10943                                         case MONO_TYPE_U1:
10944                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10945                                                 sp++;
10946                                                 break;
10947                                         case MONO_TYPE_I1:
10948                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10949                                                 sp++;
10950                                                 break;
10951                                         case MONO_TYPE_CHAR:
10952                                         case MONO_TYPE_U2:
10953                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10954                                                 sp++;
10955                                                 break;
10956                                         case MONO_TYPE_I2:
10957                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10958                                                 sp++;
10959                                                 break;
10960                                                 break;
10961                                         case MONO_TYPE_I4:
10962                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10963                                                 sp++;
10964                                                 break;
10965                                         case MONO_TYPE_U4:
10966                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10967                                                 sp++;
10968                                                 break;
10969                                         case MONO_TYPE_I:
10970                                         case MONO_TYPE_U:
10971                                         case MONO_TYPE_PTR:
10972                                         case MONO_TYPE_FNPTR:
10973                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10974                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10975                                                 sp++;
10976                                                 break;
10977                                         case MONO_TYPE_STRING:
10978                                         case MONO_TYPE_OBJECT:
10979                                         case MONO_TYPE_CLASS:
10980                                         case MONO_TYPE_SZARRAY:
10981                                         case MONO_TYPE_ARRAY:
10982                                                 if (!mono_gc_is_moving ()) {
10983                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10984                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10985                                                         sp++;
10986                                                 } else {
10987                                                         is_const = FALSE;
10988                                                 }
10989                                                 break;
10990                                         case MONO_TYPE_I8:
10991                                         case MONO_TYPE_U8:
10992                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10993                                                 sp++;
10994                                                 break;
10995                                         case MONO_TYPE_R4:
10996                                         case MONO_TYPE_R8:
10997                                         case MONO_TYPE_VALUETYPE:
10998                                         default:
10999                                                 is_const = FALSE;
11000                                                 break;
11001                                         }
11002                                 }
11003
11004                                 if (!is_const) {
11005                                         MonoInst *load;
11006
11007                                         CHECK_STACK_OVF (1);
11008
11009                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11010                                         load->flags |= ins_flag;
11011                                         ins_flag = 0;
11012                                         *sp++ = load;
11013                                 }
11014                         }
11015
11016                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11017                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11018                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11019                         }
11020
11021                         ins_flag = 0;
11022                         ip += 5;
11023                         break;
11024                 }
11025                 case CEE_STOBJ:
11026                         CHECK_STACK (2);
11027                         sp -= 2;
11028                         CHECK_OPSIZE (5);
11029                         token = read32 (ip + 1);
11030                         klass = mini_get_class (method, token, generic_context);
11031                         CHECK_TYPELOAD (klass);
11032
11033                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11034                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
11035                         ins_flag = 0;
11036                         ip += 5;
11037                         inline_costs += 1;
11038                         break;
11039
11040                         /*
11041                          * Array opcodes
11042                          */
11043                 case CEE_NEWARR: {
11044                         MonoInst *len_ins;
11045                         const char *data_ptr;
11046                         int data_size = 0;
11047                         guint32 field_token;
11048
11049                         CHECK_STACK (1);
11050                         --sp;
11051
11052                         CHECK_OPSIZE (5);
11053                         token = read32 (ip + 1);
11054
11055                         klass = mini_get_class (method, token, generic_context);
11056                         CHECK_TYPELOAD (klass);
11057                         if (klass->byval_arg.type == MONO_TYPE_VOID)
11058                                 UNVERIFIED;
11059
11060                         context_used = mini_class_check_context_used (cfg, klass);
11061
11062                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11063                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11064                                 ins->sreg1 = sp [0]->dreg;
11065                                 ins->type = STACK_I4;
11066                                 ins->dreg = alloc_ireg (cfg);
11067                                 MONO_ADD_INS (cfg->cbb, ins);
11068                                 *sp = mono_decompose_opcode (cfg, ins);
11069                         }
11070
11071                         if (context_used) {
11072                                 MonoInst *args [3];
11073                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11074                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11075
11076                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11077
11078                                 /* vtable */
11079                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
11080                                         array_class, MONO_RGCTX_INFO_VTABLE);
11081                                 /* array len */
11082                                 args [1] = sp [0];
11083
11084                                 if (managed_alloc)
11085                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11086                                 else
11087                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11088                         } else {
11089                                 if (cfg->opt & MONO_OPT_SHARED) {
11090                                         /* Decompose now to avoid problems with references to the domainvar */
11091                                         MonoInst *iargs [3];
11092
11093                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11094                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11095                                         iargs [2] = sp [0];
11096
11097                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11098                                 } else {
11099                                         /* Decompose later since it is needed by abcrem */
11100                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11101                                         mono_class_vtable (cfg->domain, array_type);
11102                                         CHECK_TYPELOAD (array_type);
11103
11104                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11105                                         ins->dreg = alloc_ireg_ref (cfg);
11106                                         ins->sreg1 = sp [0]->dreg;
11107                                         ins->inst_newa_class = klass;
11108                                         ins->type = STACK_OBJ;
11109                                         ins->klass = array_type;
11110                                         MONO_ADD_INS (cfg->cbb, ins);
11111                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11112                                         cfg->cbb->has_array_access = TRUE;
11113
11114                                         /* Needed so mono_emit_load_get_addr () gets called */
11115                                         mono_get_got_var (cfg);
11116                                 }
11117                         }
11118
11119                         len_ins = sp [0];
11120                         ip += 5;
11121                         *sp++ = ins;
11122                         inline_costs += 1;
11123
11124                         /*
11125                          * we inline/optimize the initialization sequence if possible.
11126                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11127                          * for small sizes open code the memcpy
11128                          * ensure the rva field is big enough
11129                          */
11130                         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))) {
11131                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
11132                                 MonoInst *iargs [3];
11133                                 int add_reg = alloc_ireg_mp (cfg);
11134
11135                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11136                                 if (cfg->compile_aot) {
11137                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11138                                 } else {
11139                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11140                                 }
11141                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11142                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11143                                 ip += 11;
11144                         }
11145
11146                         break;
11147                 }
11148                 case CEE_LDLEN:
11149                         CHECK_STACK (1);
11150                         --sp;
11151                         if (sp [0]->type != STACK_OBJ)
11152                                 UNVERIFIED;
11153
11154                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11155                         ins->dreg = alloc_preg (cfg);
11156                         ins->sreg1 = sp [0]->dreg;
11157                         ins->type = STACK_I4;
11158                         /* This flag will be inherited by the decomposition */
11159                         ins->flags |= MONO_INST_FAULT;
11160                         MONO_ADD_INS (cfg->cbb, ins);
11161                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11162                         cfg->cbb->has_array_access = TRUE;
11163                         ip ++;
11164                         *sp++ = ins;
11165                         break;
11166                 case CEE_LDELEMA:
11167                         CHECK_STACK (2);
11168                         sp -= 2;
11169                         CHECK_OPSIZE (5);
11170                         if (sp [0]->type != STACK_OBJ)
11171                                 UNVERIFIED;
11172
11173                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11174
11175                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11176                         CHECK_TYPELOAD (klass);
11177                         /* we need to make sure that this array is exactly the type it needs
11178                          * to be for correctness. the wrappers are lax with their usage
11179                          * so we need to ignore them here
11180                          */
11181                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11182                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11183                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11184                                 CHECK_TYPELOAD (array_class);
11185                         }
11186
11187                         readonly = FALSE;
11188                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11189                         *sp++ = ins;
11190                         ip += 5;
11191                         break;
11192                 case CEE_LDELEM:
11193                 case CEE_LDELEM_I1:
11194                 case CEE_LDELEM_U1:
11195                 case CEE_LDELEM_I2:
11196                 case CEE_LDELEM_U2:
11197                 case CEE_LDELEM_I4:
11198                 case CEE_LDELEM_U4:
11199                 case CEE_LDELEM_I8:
11200                 case CEE_LDELEM_I:
11201                 case CEE_LDELEM_R4:
11202                 case CEE_LDELEM_R8:
11203                 case CEE_LDELEM_REF: {
11204                         MonoInst *addr;
11205
11206                         CHECK_STACK (2);
11207                         sp -= 2;
11208
11209                         if (*ip == CEE_LDELEM) {
11210                                 CHECK_OPSIZE (5);
11211                                 token = read32 (ip + 1);
11212                                 klass = mini_get_class (method, token, generic_context);
11213                                 CHECK_TYPELOAD (klass);
11214                                 mono_class_init (klass);
11215                         }
11216                         else
11217                                 klass = array_access_to_klass (*ip);
11218
11219                         if (sp [0]->type != STACK_OBJ)
11220                                 UNVERIFIED;
11221
11222                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11223
11224                         if (mini_is_gsharedvt_variable_klass (klass)) {
11225                                 // FIXME-VT: OP_ICONST optimization
11226                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11227                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11228                                 ins->opcode = OP_LOADV_MEMBASE;
11229                         } else if (sp [1]->opcode == OP_ICONST) {
11230                                 int array_reg = sp [0]->dreg;
11231                                 int index_reg = sp [1]->dreg;
11232                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11233
11234                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11235                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11236
11237                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11238                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11239                         } else {
11240                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11241                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11242                         }
11243                         *sp++ = ins;
11244                         if (*ip == CEE_LDELEM)
11245                                 ip += 5;
11246                         else
11247                                 ++ip;
11248                         break;
11249                 }
11250                 case CEE_STELEM_I:
11251                 case CEE_STELEM_I1:
11252                 case CEE_STELEM_I2:
11253                 case CEE_STELEM_I4:
11254                 case CEE_STELEM_I8:
11255                 case CEE_STELEM_R4:
11256                 case CEE_STELEM_R8:
11257                 case CEE_STELEM_REF:
11258                 case CEE_STELEM: {
11259                         CHECK_STACK (3);
11260                         sp -= 3;
11261
11262                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11263
11264                         if (*ip == CEE_STELEM) {
11265                                 CHECK_OPSIZE (5);
11266                                 token = read32 (ip + 1);
11267                                 klass = mini_get_class (method, token, generic_context);
11268                                 CHECK_TYPELOAD (klass);
11269                                 mono_class_init (klass);
11270                         }
11271                         else
11272                                 klass = array_access_to_klass (*ip);
11273
11274                         if (sp [0]->type != STACK_OBJ)
11275                                 UNVERIFIED;
11276
11277                         emit_array_store (cfg, klass, sp, TRUE);
11278
11279                         if (*ip == CEE_STELEM)
11280                                 ip += 5;
11281                         else
11282                                 ++ip;
11283                         inline_costs += 1;
11284                         break;
11285                 }
11286                 case CEE_CKFINITE: {
11287                         CHECK_STACK (1);
11288                         --sp;
11289
11290                         if (cfg->llvm_only) {
11291                                 MonoInst *iargs [1];
11292
11293                                 iargs [0] = sp [0];
11294                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11295                         } else  {
11296                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11297                                 ins->sreg1 = sp [0]->dreg;
11298                                 ins->dreg = alloc_freg (cfg);
11299                                 ins->type = STACK_R8;
11300                                 MONO_ADD_INS (cfg->cbb, ins);
11301
11302                                 *sp++ = mono_decompose_opcode (cfg, ins);
11303                         }
11304
11305                         ++ip;
11306                         break;
11307                 }
11308                 case CEE_REFANYVAL: {
11309                         MonoInst *src_var, *src;
11310
11311                         int klass_reg = alloc_preg (cfg);
11312                         int dreg = alloc_preg (cfg);
11313
11314                         GSHAREDVT_FAILURE (*ip);
11315
11316                         CHECK_STACK (1);
11317                         MONO_INST_NEW (cfg, ins, *ip);
11318                         --sp;
11319                         CHECK_OPSIZE (5);
11320                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11321                         CHECK_TYPELOAD (klass);
11322
11323                         context_used = mini_class_check_context_used (cfg, klass);
11324
11325                         // FIXME:
11326                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11327                         if (!src_var)
11328                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11329                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11330                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11331
11332                         if (context_used) {
11333                                 MonoInst *klass_ins;
11334
11335                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11336                                                 klass, MONO_RGCTX_INFO_KLASS);
11337
11338                                 // FIXME:
11339                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11340                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11341                         } else {
11342                                 mini_emit_class_check (cfg, klass_reg, klass);
11343                         }
11344                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11345                         ins->type = STACK_MP;
11346                         ins->klass = klass;
11347                         *sp++ = ins;
11348                         ip += 5;
11349                         break;
11350                 }
11351                 case CEE_MKREFANY: {
11352                         MonoInst *loc, *addr;
11353
11354                         GSHAREDVT_FAILURE (*ip);
11355
11356                         CHECK_STACK (1);
11357                         MONO_INST_NEW (cfg, ins, *ip);
11358                         --sp;
11359                         CHECK_OPSIZE (5);
11360                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11361                         CHECK_TYPELOAD (klass);
11362
11363                         context_used = mini_class_check_context_used (cfg, klass);
11364
11365                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11366                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11367
11368                         if (context_used) {
11369                                 MonoInst *const_ins;
11370                                 int type_reg = alloc_preg (cfg);
11371
11372                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11373                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11374                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11375                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11376                         } else {
11377                                 int const_reg = alloc_preg (cfg);
11378                                 int type_reg = alloc_preg (cfg);
11379
11380                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11381                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11382                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11383                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11384                         }
11385                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11386
11387                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11388                         ins->type = STACK_VTYPE;
11389                         ins->klass = mono_defaults.typed_reference_class;
11390                         *sp++ = ins;
11391                         ip += 5;
11392                         break;
11393                 }
11394                 case CEE_LDTOKEN: {
11395                         gpointer handle;
11396                         MonoClass *handle_class;
11397
11398                         CHECK_STACK_OVF (1);
11399
11400                         CHECK_OPSIZE (5);
11401                         n = read32 (ip + 1);
11402
11403                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11404                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11405                                 handle = mono_method_get_wrapper_data (method, n);
11406                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11407                                 if (handle_class == mono_defaults.typehandle_class)
11408                                         handle = &((MonoClass*)handle)->byval_arg;
11409                         }
11410                         else {
11411                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11412                                 CHECK_CFG_ERROR;
11413                         }
11414                         if (!handle)
11415                                 LOAD_ERROR;
11416                         mono_class_init (handle_class);
11417                         if (cfg->gshared) {
11418                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11419                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11420                                         /* This case handles ldtoken
11421                                            of an open type, like for
11422                                            typeof(Gen<>). */
11423                                         context_used = 0;
11424                                 } else if (handle_class == mono_defaults.typehandle_class) {
11425                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11426                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11427                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11428                                 else if (handle_class == mono_defaults.methodhandle_class)
11429                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11430                                 else
11431                                         g_assert_not_reached ();
11432                         }
11433
11434                         if ((cfg->opt & MONO_OPT_SHARED) &&
11435                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11436                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11437                                 MonoInst *addr, *vtvar, *iargs [3];
11438                                 int method_context_used;
11439
11440                                 method_context_used = mini_method_check_context_used (cfg, method);
11441
11442                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11443
11444                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11445                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11446                                 if (method_context_used) {
11447                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11448                                                 method, MONO_RGCTX_INFO_METHOD);
11449                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11450                                 } else {
11451                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11452                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11453                                 }
11454                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11455
11456                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11457
11458                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11459                         } else {
11460                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11461                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11462                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11463                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11464                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11465                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11466
11467                                         mono_class_init (tclass);
11468                                         if (context_used) {
11469                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11470                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11471                                         } else if (cfg->compile_aot) {
11472                                                 if (method->wrapper_type) {
11473                                                         error_init (&error); //got to do it since there are multiple conditionals below
11474                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11475                                                                 /* Special case for static synchronized wrappers */
11476                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11477                                                         } else {
11478                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11479                                                                 /* FIXME: n is not a normal token */
11480                                                                 DISABLE_AOT (cfg);
11481                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11482                                                         }
11483                                                 } else {
11484                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11485                                                 }
11486                                         } else {
11487                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11488                                                 CHECK_CFG_ERROR;
11489                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11490                                         }
11491                                         ins->type = STACK_OBJ;
11492                                         ins->klass = cmethod->klass;
11493                                         ip += 5;
11494                                 } else {
11495                                         MonoInst *addr, *vtvar;
11496
11497                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11498
11499                                         if (context_used) {
11500                                                 if (handle_class == mono_defaults.typehandle_class) {
11501                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11502                                                                         mono_class_from_mono_type ((MonoType *)handle),
11503                                                                         MONO_RGCTX_INFO_TYPE);
11504                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11505                                                         ins = emit_get_rgctx_method (cfg, context_used,
11506                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11507                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11508                                                         ins = emit_get_rgctx_field (cfg, context_used,
11509                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11510                                                 } else {
11511                                                         g_assert_not_reached ();
11512                                                 }
11513                                         } else if (cfg->compile_aot) {
11514                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11515                                         } else {
11516                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11517                                         }
11518                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11519                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11520                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11521                                 }
11522                         }
11523
11524                         *sp++ = ins;
11525                         ip += 5;
11526                         break;
11527                 }
11528                 case CEE_THROW:
11529                         CHECK_STACK (1);
11530                         if (sp [-1]->type != STACK_OBJ)
11531                                 UNVERIFIED;
11532
11533                         MONO_INST_NEW (cfg, ins, OP_THROW);
11534                         --sp;
11535                         ins->sreg1 = sp [0]->dreg;
11536                         ip++;
11537                         cfg->cbb->out_of_line = TRUE;
11538                         MONO_ADD_INS (cfg->cbb, ins);
11539                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11540                         MONO_ADD_INS (cfg->cbb, ins);
11541                         sp = stack_start;
11542
11543                         link_bblock (cfg, cfg->cbb, end_bblock);
11544                         start_new_bblock = 1;
11545                         /* This can complicate code generation for llvm since the return value might not be defined */
11546                         if (COMPILE_LLVM (cfg))
11547                                 INLINE_FAILURE ("throw");
11548                         break;
11549                 case CEE_ENDFINALLY:
11550                         if (!ip_in_finally_clause (cfg, ip - header->code))
11551                                 UNVERIFIED;
11552                         /* mono_save_seq_point_info () depends on this */
11553                         if (sp != stack_start)
11554                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11555                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11556                         MONO_ADD_INS (cfg->cbb, ins);
11557                         ip++;
11558                         start_new_bblock = 1;
11559
11560                         /*
11561                          * Control will leave the method so empty the stack, otherwise
11562                          * the next basic block will start with a nonempty stack.
11563                          */
11564                         while (sp != stack_start) {
11565                                 sp--;
11566                         }
11567                         break;
11568                 case CEE_LEAVE:
11569                 case CEE_LEAVE_S: {
11570                         GList *handlers;
11571
11572                         if (*ip == CEE_LEAVE) {
11573                                 CHECK_OPSIZE (5);
11574                                 target = ip + 5 + (gint32)read32(ip + 1);
11575                         } else {
11576                                 CHECK_OPSIZE (2);
11577                                 target = ip + 2 + (signed char)(ip [1]);
11578                         }
11579
11580                         /* empty the stack */
11581                         while (sp != stack_start) {
11582                                 sp--;
11583                         }
11584
11585                         /*
11586                          * If this leave statement is in a catch block, check for a
11587                          * pending exception, and rethrow it if necessary.
11588                          * We avoid doing this in runtime invoke wrappers, since those are called
11589                          * by native code which excepts the wrapper to catch all exceptions.
11590                          */
11591                         for (i = 0; i < header->num_clauses; ++i) {
11592                                 MonoExceptionClause *clause = &header->clauses [i];
11593
11594                                 /*
11595                                  * Use <= in the final comparison to handle clauses with multiple
11596                                  * leave statements, like in bug #78024.
11597                                  * The ordering of the exception clauses guarantees that we find the
11598                                  * innermost clause.
11599                                  */
11600                                 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) {
11601                                         MonoInst *exc_ins;
11602                                         MonoBasicBlock *dont_throw;
11603
11604                                         /*
11605                                           MonoInst *load;
11606
11607                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11608                                         */
11609
11610                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11611
11612                                         NEW_BBLOCK (cfg, dont_throw);
11613
11614                                         /*
11615                                          * Currently, we always rethrow the abort exception, despite the
11616                                          * fact that this is not correct. See thread6.cs for an example.
11617                                          * But propagating the abort exception is more important than
11618                                          * getting the sematics right.
11619                                          */
11620                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11621                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11622                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11623
11624                                         MONO_START_BB (cfg, dont_throw);
11625                                 }
11626                         }
11627
11628 #ifdef ENABLE_LLVM
11629                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11630 #endif
11631
11632                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11633                                 GList *tmp;
11634                                 MonoExceptionClause *clause;
11635
11636                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11637                                         clause = (MonoExceptionClause *)tmp->data;
11638                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11639                                         g_assert (tblock);
11640                                         link_bblock (cfg, cfg->cbb, tblock);
11641                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11642                                         ins->inst_target_bb = tblock;
11643                                         ins->inst_eh_block = clause;
11644                                         MONO_ADD_INS (cfg->cbb, ins);
11645                                         cfg->cbb->has_call_handler = 1;
11646                                         if (COMPILE_LLVM (cfg)) {
11647                                                 MonoBasicBlock *target_bb;
11648
11649                                                 /*
11650                                                  * Link the finally bblock with the target, since it will
11651                                                  * conceptually branch there.
11652                                                  */
11653                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11654                                                 GET_BBLOCK (cfg, target_bb, target);
11655                                                 link_bblock (cfg, tblock, target_bb);
11656                                         }
11657                                 }
11658                                 g_list_free (handlers);
11659                         }
11660
11661                         MONO_INST_NEW (cfg, ins, OP_BR);
11662                         MONO_ADD_INS (cfg->cbb, ins);
11663                         GET_BBLOCK (cfg, tblock, target);
11664                         link_bblock (cfg, cfg->cbb, tblock);
11665                         ins->inst_target_bb = tblock;
11666
11667                         start_new_bblock = 1;
11668
11669                         if (*ip == CEE_LEAVE)
11670                                 ip += 5;
11671                         else
11672                                 ip += 2;
11673
11674                         break;
11675                 }
11676
11677                         /*
11678                          * Mono specific opcodes
11679                          */
11680                 case MONO_CUSTOM_PREFIX: {
11681
11682                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11683
11684                         CHECK_OPSIZE (2);
11685                         switch (ip [1]) {
11686                         case CEE_MONO_ICALL: {
11687                                 gpointer func;
11688                                 MonoJitICallInfo *info;
11689
11690                                 token = read32 (ip + 2);
11691                                 func = mono_method_get_wrapper_data (method, token);
11692                                 info = mono_find_jit_icall_by_addr (func);
11693                                 if (!info)
11694                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11695                                 g_assert (info);
11696
11697                                 CHECK_STACK (info->sig->param_count);
11698                                 sp -= info->sig->param_count;
11699
11700                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
11701                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11702                                         *sp++ = ins;
11703
11704                                 ip += 6;
11705                                 inline_costs += 10 * num_calls++;
11706
11707                                 break;
11708                         }
11709                         case CEE_MONO_LDPTR_CARD_TABLE:
11710                         case CEE_MONO_LDPTR_NURSERY_START:
11711                         case CEE_MONO_LDPTR_NURSERY_BITS:
11712                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
11713                                 CHECK_STACK_OVF (1);
11714
11715                                 switch (ip [1]) {
11716                                         case CEE_MONO_LDPTR_CARD_TABLE:
11717                                                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11718                                                 break;
11719                                         case CEE_MONO_LDPTR_NURSERY_START:
11720                                                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11721                                                 break;
11722                                         case CEE_MONO_LDPTR_NURSERY_BITS:
11723                                                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11724                                                 break;
11725                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11726                                                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11727                                                 break;
11728                                 }
11729
11730                                 *sp++ = ins;
11731                                 ip += 2;
11732                                 inline_costs += 10 * num_calls++;
11733                                 break;
11734                         }
11735                         case CEE_MONO_LDPTR: {
11736                                 gpointer ptr;
11737
11738                                 CHECK_STACK_OVF (1);
11739                                 CHECK_OPSIZE (6);
11740                                 token = read32 (ip + 2);
11741
11742                                 ptr = mono_method_get_wrapper_data (method, token);
11743                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11744                                 *sp++ = ins;
11745                                 ip += 6;
11746                                 inline_costs += 10 * num_calls++;
11747                                 /* Can't embed random pointers into AOT code */
11748                                 DISABLE_AOT (cfg);
11749                                 break;
11750                         }
11751                         case CEE_MONO_JIT_ICALL_ADDR: {
11752                                 MonoJitICallInfo *callinfo;
11753                                 gpointer ptr;
11754
11755                                 CHECK_STACK_OVF (1);
11756                                 CHECK_OPSIZE (6);
11757                                 token = read32 (ip + 2);
11758
11759                                 ptr = mono_method_get_wrapper_data (method, token);
11760                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11761                                 g_assert (callinfo);
11762                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11763                                 *sp++ = ins;
11764                                 ip += 6;
11765                                 inline_costs += 10 * num_calls++;
11766                                 break;
11767                         }
11768                         case CEE_MONO_ICALL_ADDR: {
11769                                 MonoMethod *cmethod;
11770                                 gpointer ptr;
11771
11772                                 CHECK_STACK_OVF (1);
11773                                 CHECK_OPSIZE (6);
11774                                 token = read32 (ip + 2);
11775
11776                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11777
11778                                 if (cfg->compile_aot) {
11779                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11780                                                 /*
11781                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11782                                                  * before the call, its not needed when using direct pinvoke.
11783                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11784                                                  * on platforms which don't support dlopen ().
11785                                                  */
11786                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11787                                         } else {
11788                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11789                                         }
11790                                 } else {
11791                                         ptr = mono_lookup_internal_call (cmethod);
11792                                         g_assert (ptr);
11793                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11794                                 }
11795                                 *sp++ = ins;
11796                                 ip += 6;
11797                                 break;
11798                         }
11799                         case CEE_MONO_VTADDR: {
11800                                 MonoInst *src_var, *src;
11801
11802                                 CHECK_STACK (1);
11803                                 --sp;
11804
11805                                 // FIXME:
11806                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11807                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11808                                 *sp++ = src;
11809                                 ip += 2;
11810                                 break;
11811                         }
11812                         case CEE_MONO_NEWOBJ: {
11813                                 MonoInst *iargs [2];
11814
11815                                 CHECK_STACK_OVF (1);
11816                                 CHECK_OPSIZE (6);
11817                                 token = read32 (ip + 2);
11818                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11819                                 mono_class_init (klass);
11820                                 NEW_DOMAINCONST (cfg, iargs [0]);
11821                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11822                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11823                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11824                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11825                                 ip += 6;
11826                                 inline_costs += 10 * num_calls++;
11827                                 break;
11828                         }
11829                         case CEE_MONO_OBJADDR:
11830                                 CHECK_STACK (1);
11831                                 --sp;
11832                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11833                                 ins->dreg = alloc_ireg_mp (cfg);
11834                                 ins->sreg1 = sp [0]->dreg;
11835                                 ins->type = STACK_MP;
11836                                 MONO_ADD_INS (cfg->cbb, ins);
11837                                 *sp++ = ins;
11838                                 ip += 2;
11839                                 break;
11840                         case CEE_MONO_LDNATIVEOBJ:
11841                                 /*
11842                                  * Similar to LDOBJ, but instead load the unmanaged
11843                                  * representation of the vtype to the stack.
11844                                  */
11845                                 CHECK_STACK (1);
11846                                 CHECK_OPSIZE (6);
11847                                 --sp;
11848                                 token = read32 (ip + 2);
11849                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11850                                 g_assert (klass->valuetype);
11851                                 mono_class_init (klass);
11852
11853                                 {
11854                                         MonoInst *src, *dest, *temp;
11855
11856                                         src = sp [0];
11857                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11858                                         temp->backend.is_pinvoke = 1;
11859                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11860                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
11861
11862                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11863                                         dest->type = STACK_VTYPE;
11864                                         dest->klass = klass;
11865
11866                                         *sp ++ = dest;
11867                                         ip += 6;
11868                                 }
11869                                 break;
11870                         case CEE_MONO_RETOBJ: {
11871                                 /*
11872                                  * Same as RET, but return the native representation of a vtype
11873                                  * to the caller.
11874                                  */
11875                                 g_assert (cfg->ret);
11876                                 g_assert (mono_method_signature (method)->pinvoke);
11877                                 CHECK_STACK (1);
11878                                 --sp;
11879
11880                                 CHECK_OPSIZE (6);
11881                                 token = read32 (ip + 2);
11882                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11883
11884                                 if (!cfg->vret_addr) {
11885                                         g_assert (cfg->ret_var_is_local);
11886
11887                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11888                                 } else {
11889                                         EMIT_NEW_RETLOADA (cfg, ins);
11890                                 }
11891                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
11892
11893                                 if (sp != stack_start)
11894                                         UNVERIFIED;
11895
11896                                 MONO_INST_NEW (cfg, ins, OP_BR);
11897                                 ins->inst_target_bb = end_bblock;
11898                                 MONO_ADD_INS (cfg->cbb, ins);
11899                                 link_bblock (cfg, cfg->cbb, end_bblock);
11900                                 start_new_bblock = 1;
11901                                 ip += 6;
11902                                 break;
11903                         }
11904                         case CEE_MONO_SAVE_LMF:
11905                         case CEE_MONO_RESTORE_LMF:
11906                                 ip += 2;
11907                                 break;
11908                         case CEE_MONO_CLASSCONST:
11909                                 CHECK_STACK_OVF (1);
11910                                 CHECK_OPSIZE (6);
11911                                 token = read32 (ip + 2);
11912                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11913                                 *sp++ = ins;
11914                                 ip += 6;
11915                                 inline_costs += 10 * num_calls++;
11916                                 break;
11917                         case CEE_MONO_NOT_TAKEN:
11918                                 cfg->cbb->out_of_line = TRUE;
11919                                 ip += 2;
11920                                 break;
11921                         case CEE_MONO_TLS: {
11922                                 MonoTlsKey key;
11923
11924                                 CHECK_STACK_OVF (1);
11925                                 CHECK_OPSIZE (6);
11926                                 key = (MonoTlsKey)read32 (ip + 2);
11927                                 g_assert (key < TLS_KEY_NUM);
11928
11929                                 ins = mono_create_tls_get (cfg, key);
11930                                 g_assert (ins);
11931                                 ins->type = STACK_PTR;
11932                                 *sp++ = ins;
11933                                 ip += 6;
11934                                 break;
11935                         }
11936                         case CEE_MONO_DYN_CALL: {
11937                                 MonoCallInst *call;
11938
11939                                 /* It would be easier to call a trampoline, but that would put an
11940                                  * extra frame on the stack, confusing exception handling. So
11941                                  * implement it inline using an opcode for now.
11942                                  */
11943
11944                                 if (!cfg->dyn_call_var) {
11945                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11946                                         /* prevent it from being register allocated */
11947                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11948                                 }
11949
11950                                 /* Has to use a call inst since it local regalloc expects it */
11951                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11952                                 ins = (MonoInst*)call;
11953                                 sp -= 2;
11954                                 ins->sreg1 = sp [0]->dreg;
11955                                 ins->sreg2 = sp [1]->dreg;
11956                                 MONO_ADD_INS (cfg->cbb, ins);
11957
11958                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11959
11960                                 ip += 2;
11961                                 inline_costs += 10 * num_calls++;
11962
11963                                 break;
11964                         }
11965                         case CEE_MONO_MEMORY_BARRIER: {
11966                                 CHECK_OPSIZE (6);
11967                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11968                                 ip += 6;
11969                                 break;
11970                         }
11971                         case CEE_MONO_ATOMIC_STORE_I4: {
11972                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11973
11974                                 CHECK_OPSIZE (6);
11975                                 CHECK_STACK (2);
11976                                 sp -= 2;
11977
11978                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11979                                 ins->dreg = sp [0]->dreg;
11980                                 ins->sreg1 = sp [1]->dreg;
11981                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11982                                 MONO_ADD_INS (cfg->cbb, ins);
11983
11984                                 ip += 6;
11985                                 break;
11986                         }
11987                         case CEE_MONO_JIT_ATTACH: {
11988                                 MonoInst *args [16], *domain_ins;
11989                                 MonoInst *ad_ins, *jit_tls_ins;
11990                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11991
11992                                 g_assert (!mono_threads_is_coop_enabled ());
11993
11994                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11995
11996                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11997                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11998
11999                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12000                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
12001
12002                                 if (ad_ins && jit_tls_ins) {
12003                                         NEW_BBLOCK (cfg, next_bb);
12004                                         NEW_BBLOCK (cfg, call_bb);
12005
12006                                         if (cfg->compile_aot) {
12007                                                 /* AOT code is only used in the root domain */
12008                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12009                                         } else {
12010                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12011                                         }
12012                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12013                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12014
12015                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12016                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12017
12018                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12019                                         MONO_START_BB (cfg, call_bb);
12020                                 }
12021
12022                                 /* AOT code is only used in the root domain */
12023                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12024                                 if (cfg->compile_aot) {
12025                                         MonoInst *addr;
12026
12027                                         /*
12028                                          * This is called on unattached threads, so it cannot go through the trampoline
12029                                          * infrastructure. Use an indirect call through a got slot initialized at load time
12030                                          * instead.
12031                                          */
12032                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
12033                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
12034                                 } else {
12035                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12036                                 }
12037                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12038
12039                                 if (next_bb)
12040                                         MONO_START_BB (cfg, next_bb);
12041
12042                                 ip += 2;
12043                                 break;
12044                         }
12045                         case CEE_MONO_JIT_DETACH: {
12046                                 MonoInst *args [16];
12047
12048                                 /* Restore the original domain */
12049                                 dreg = alloc_ireg (cfg);
12050                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12051                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12052                                 ip += 2;
12053                                 break;
12054                         }
12055                         case CEE_MONO_CALLI_EXTRA_ARG: {
12056                                 MonoInst *addr;
12057                                 MonoMethodSignature *fsig;
12058                                 MonoInst *arg;
12059
12060                                 /*
12061                                  * This is the same as CEE_CALLI, but passes an additional argument
12062                                  * to the called method in llvmonly mode.
12063                                  * This is only used by delegate invoke wrappers to call the
12064                                  * actual delegate method.
12065                                  */
12066                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12067
12068                                 CHECK_OPSIZE (6);
12069                                 token = read32 (ip + 2);
12070
12071                                 ins = NULL;
12072
12073                                 cmethod = NULL;
12074                                 CHECK_STACK (1);
12075                                 --sp;
12076                                 addr = *sp;
12077                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12078                                 CHECK_CFG_ERROR;
12079
12080                                 if (cfg->llvm_only)
12081                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12082
12083                                 n = fsig->param_count + fsig->hasthis + 1;
12084
12085                                 CHECK_STACK (n);
12086
12087                                 sp -= n;
12088                                 arg = sp [n - 1];
12089
12090                                 if (cfg->llvm_only) {
12091                                         /*
12092                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12093                                          * cconv. This is set by mono_init_delegate ().
12094                                          */
12095                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12096                                                 MonoInst *callee = addr;
12097                                                 MonoInst *call, *localloc_ins;
12098                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12099                                                 int low_bit_reg = alloc_preg (cfg);
12100
12101                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12102                                                 NEW_BBLOCK (cfg, end_bb);
12103
12104                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12105                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12106                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12107
12108                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12109                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12110                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12111                                                 /*
12112                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12113                                                  */
12114                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12115                                                 ins->dreg = alloc_preg (cfg);
12116                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12117                                                 MONO_ADD_INS (cfg->cbb, ins);
12118                                                 localloc_ins = ins;
12119                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12120                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12121                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12122
12123                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12124                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12125
12126                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12127                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12128                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12129                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12130                                                 ins->dreg = call->dreg;
12131
12132                                                 MONO_START_BB (cfg, end_bb);
12133                                         } else {
12134                                                 /* Caller uses a normal calling conv */
12135
12136                                                 MonoInst *callee = addr;
12137                                                 MonoInst *call, *localloc_ins;
12138                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12139                                                 int low_bit_reg = alloc_preg (cfg);
12140
12141                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12142                                                 NEW_BBLOCK (cfg, end_bb);
12143
12144                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12145                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12146                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12147
12148                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12149                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12150                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12151                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12152                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12153                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12154                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12155                                                 MONO_ADD_INS (cfg->cbb, addr);
12156                                                 /*
12157                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12158                                                  */
12159                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12160                                                 ins->dreg = alloc_preg (cfg);
12161                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12162                                                 MONO_ADD_INS (cfg->cbb, ins);
12163                                                 localloc_ins = ins;
12164                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12165                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12166                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12167
12168                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12169                                                 ins->dreg = call->dreg;
12170                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12171
12172                                                 MONO_START_BB (cfg, end_bb);
12173                                         }
12174                                 } else {
12175                                         /* Same as CEE_CALLI */
12176                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12177                                                 /*
12178                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12179                                                  */
12180                                                 MonoInst *callee = addr;
12181
12182                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12183                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12184                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12185                                         } else {
12186                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12187                                         }
12188                                 }
12189
12190                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12191                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12192
12193                                 CHECK_CFG_EXCEPTION;
12194
12195                                 ip += 6;
12196                                 ins_flag = 0;
12197                                 constrained_class = NULL;
12198                                 break;
12199                         }
12200                         case CEE_MONO_LDDOMAIN:
12201                                 CHECK_STACK_OVF (1);
12202                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12203                                 ip += 2;
12204                                 *sp++ = ins;
12205                                 break;
12206                         case CEE_MONO_GET_LAST_ERROR:
12207                                 CHECK_OPSIZE (2);
12208                                 CHECK_STACK_OVF (1);
12209
12210                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12211                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12212                                 ins->type = STACK_I4;
12213                                 MONO_ADD_INS (cfg->cbb, ins);
12214
12215                                 ip += 2;
12216                                 *sp++ = ins;
12217                                 break;
12218                         case CEE_MONO_GET_RGCTX_ARG:
12219                                 CHECK_OPSIZE (2);
12220                                 CHECK_STACK_OVF (1);
12221
12222                                 mono_create_rgctx_var (cfg);
12223
12224                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12225                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12226                                 ins->sreg1 = cfg->rgctx_var->dreg;
12227                                 ins->type = STACK_PTR;
12228                                 MONO_ADD_INS (cfg->cbb, ins);
12229
12230                                 ip += 2;
12231                                 *sp++ = ins;
12232                                 break;
12233                         default:
12234                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12235                                 break;
12236                         }
12237                         break;
12238                 }
12239
12240                 case CEE_PREFIX1: {
12241                         CHECK_OPSIZE (2);
12242                         switch (ip [1]) {
12243                         case CEE_ARGLIST: {
12244                                 /* somewhat similar to LDTOKEN */
12245                                 MonoInst *addr, *vtvar;
12246                                 CHECK_STACK_OVF (1);
12247                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12248
12249                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12250                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12251
12252                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12253                                 ins->type = STACK_VTYPE;
12254                                 ins->klass = mono_defaults.argumenthandle_class;
12255                                 *sp++ = ins;
12256                                 ip += 2;
12257                                 break;
12258                         }
12259                         case CEE_CEQ:
12260                         case CEE_CGT:
12261                         case CEE_CGT_UN:
12262                         case CEE_CLT:
12263                         case CEE_CLT_UN: {
12264                                 MonoInst *cmp, *arg1, *arg2;
12265
12266                                 CHECK_STACK (2);
12267                                 sp -= 2;
12268                                 arg1 = sp [0];
12269                                 arg2 = sp [1];
12270
12271                                 /*
12272                                  * The following transforms:
12273                                  *    CEE_CEQ    into OP_CEQ
12274                                  *    CEE_CGT    into OP_CGT
12275                                  *    CEE_CGT_UN into OP_CGT_UN
12276                                  *    CEE_CLT    into OP_CLT
12277                                  *    CEE_CLT_UN into OP_CLT_UN
12278                                  */
12279                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12280
12281                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12282                                 cmp->sreg1 = arg1->dreg;
12283                                 cmp->sreg2 = arg2->dreg;
12284                                 type_from_op (cfg, cmp, arg1, arg2);
12285                                 CHECK_TYPE (cmp);
12286                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12287                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12288                                         cmp->opcode = OP_LCOMPARE;
12289                                 else if (arg1->type == STACK_R4)
12290                                         cmp->opcode = OP_RCOMPARE;
12291                                 else if (arg1->type == STACK_R8)
12292                                         cmp->opcode = OP_FCOMPARE;
12293                                 else
12294                                         cmp->opcode = OP_ICOMPARE;
12295                                 MONO_ADD_INS (cfg->cbb, cmp);
12296                                 ins->type = STACK_I4;
12297                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12298                                 type_from_op (cfg, ins, arg1, arg2);
12299
12300                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12301                                         /*
12302                                          * The backends expect the fceq opcodes to do the
12303                                          * comparison too.
12304                                          */
12305                                         ins->sreg1 = cmp->sreg1;
12306                                         ins->sreg2 = cmp->sreg2;
12307                                         NULLIFY_INS (cmp);
12308                                 }
12309                                 MONO_ADD_INS (cfg->cbb, ins);
12310                                 *sp++ = ins;
12311                                 ip += 2;
12312                                 break;
12313                         }
12314                         case CEE_LDFTN: {
12315                                 MonoInst *argconst;
12316                                 MonoMethod *cil_method;
12317
12318                                 CHECK_STACK_OVF (1);
12319                                 CHECK_OPSIZE (6);
12320                                 n = read32 (ip + 2);
12321                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12322                                 CHECK_CFG_ERROR;
12323
12324                                 mono_class_init (cmethod->klass);
12325
12326                                 mono_save_token_info (cfg, image, n, cmethod);
12327
12328                                 context_used = mini_method_check_context_used (cfg, cmethod);
12329
12330                                 cil_method = cmethod;
12331                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12332                                         emit_method_access_failure (cfg, method, cil_method);
12333
12334                                 if (mono_security_core_clr_enabled ())
12335                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12336
12337                                 /*
12338                                  * Optimize the common case of ldftn+delegate creation
12339                                  */
12340                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12341                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12342                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12343                                                 MonoInst *target_ins, *handle_ins;
12344                                                 MonoMethod *invoke;
12345                                                 int invoke_context_used;
12346
12347                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12348                                                 if (!invoke || !mono_method_signature (invoke))
12349                                                         LOAD_ERROR;
12350
12351                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12352
12353                                                 target_ins = sp [-1];
12354
12355                                                 if (mono_security_core_clr_enabled ())
12356                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12357
12358                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12359                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12360                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12361                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12362                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12363                                                         }
12364                                                 }
12365
12366                                                 /* FIXME: SGEN support */
12367                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12368                                                         ip += 6;
12369                                                         if (cfg->verbose_level > 3)
12370                                                                 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));
12371                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12372                                                                 sp --;
12373                                                                 *sp = handle_ins;
12374                                                                 CHECK_CFG_EXCEPTION;
12375                                                                 ip += 5;
12376                                                                 sp ++;
12377                                                                 break;
12378                                                         }
12379                                                         ip -= 6;
12380                                                 }
12381                                         }
12382                                 }
12383
12384                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12385                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12386                                 *sp++ = ins;
12387
12388                                 ip += 6;
12389                                 inline_costs += 10 * num_calls++;
12390                                 break;
12391                         }
12392                         case CEE_LDVIRTFTN: {
12393                                 MonoInst *args [2];
12394
12395                                 CHECK_STACK (1);
12396                                 CHECK_OPSIZE (6);
12397                                 n = read32 (ip + 2);
12398                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12399                                 CHECK_CFG_ERROR;
12400
12401                                 mono_class_init (cmethod->klass);
12402
12403                                 context_used = mini_method_check_context_used (cfg, cmethod);
12404
12405                                 if (mono_security_core_clr_enabled ())
12406                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12407
12408                                 /*
12409                                  * Optimize the common case of ldvirtftn+delegate creation
12410                                  */
12411                                 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)) {
12412                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12413                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12414                                                 MonoInst *target_ins, *handle_ins;
12415                                                 MonoMethod *invoke;
12416                                                 int invoke_context_used;
12417                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12418
12419                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12420                                                 if (!invoke || !mono_method_signature (invoke))
12421                                                         LOAD_ERROR;
12422
12423                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12424
12425                                                 target_ins = sp [-1];
12426
12427                                                 if (mono_security_core_clr_enabled ())
12428                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12429
12430                                                 /* FIXME: SGEN support */
12431                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12432                                                         ip += 6;
12433                                                         if (cfg->verbose_level > 3)
12434                                                                 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));
12435                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12436                                                                 sp -= 2;
12437                                                                 *sp = handle_ins;
12438                                                                 CHECK_CFG_EXCEPTION;
12439                                                                 ip += 5;
12440                                                                 sp ++;
12441                                                                 break;
12442                                                         }
12443                                                         ip -= 6;
12444                                                 }
12445                                         }
12446                                 }
12447
12448                                 --sp;
12449                                 args [0] = *sp;
12450
12451                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12452                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12453
12454                                 if (context_used)
12455                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12456                                 else
12457                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12458
12459                                 ip += 6;
12460                                 inline_costs += 10 * num_calls++;
12461                                 break;
12462                         }
12463                         case CEE_LDARG:
12464                                 CHECK_STACK_OVF (1);
12465                                 CHECK_OPSIZE (4);
12466                                 n = read16 (ip + 2);
12467                                 CHECK_ARG (n);
12468                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12469                                 *sp++ = ins;
12470                                 ip += 4;
12471                                 break;
12472                         case CEE_LDARGA:
12473                                 CHECK_STACK_OVF (1);
12474                                 CHECK_OPSIZE (4);
12475                                 n = read16 (ip + 2);
12476                                 CHECK_ARG (n);
12477                                 NEW_ARGLOADA (cfg, ins, n);
12478                                 MONO_ADD_INS (cfg->cbb, ins);
12479                                 *sp++ = ins;
12480                                 ip += 4;
12481                                 break;
12482                         case CEE_STARG:
12483                                 CHECK_STACK (1);
12484                                 --sp;
12485                                 CHECK_OPSIZE (4);
12486                                 n = read16 (ip + 2);
12487                                 CHECK_ARG (n);
12488                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12489                                         UNVERIFIED;
12490                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12491                                 ip += 4;
12492                                 break;
12493                         case CEE_LDLOC:
12494                                 CHECK_STACK_OVF (1);
12495                                 CHECK_OPSIZE (4);
12496                                 n = read16 (ip + 2);
12497                                 CHECK_LOCAL (n);
12498                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12499                                 *sp++ = ins;
12500                                 ip += 4;
12501                                 break;
12502                         case CEE_LDLOCA: {
12503                                 unsigned char *tmp_ip;
12504                                 CHECK_STACK_OVF (1);
12505                                 CHECK_OPSIZE (4);
12506                                 n = read16 (ip + 2);
12507                                 CHECK_LOCAL (n);
12508
12509                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12510                                         ip = tmp_ip;
12511                                         inline_costs += 1;
12512                                         break;
12513                                 }
12514
12515                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12516                                 *sp++ = ins;
12517                                 ip += 4;
12518                                 break;
12519                         }
12520                         case CEE_STLOC:
12521                                 CHECK_STACK (1);
12522                                 --sp;
12523                                 CHECK_OPSIZE (4);
12524                                 n = read16 (ip + 2);
12525                                 CHECK_LOCAL (n);
12526                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12527                                         UNVERIFIED;
12528                                 emit_stloc_ir (cfg, sp, header, n);
12529                                 ip += 4;
12530                                 inline_costs += 1;
12531                                 break;
12532                         case CEE_LOCALLOC: {
12533                                 CHECK_STACK (1);
12534                                 MonoBasicBlock *non_zero_bb, *end_bb;
12535                                 int alloc_ptr = alloc_preg (cfg);
12536                                 --sp;
12537                                 if (sp != stack_start)
12538                                         UNVERIFIED;
12539                                 if (cfg->method != method)
12540                                         /*
12541                                          * Inlining this into a loop in a parent could lead to
12542                                          * stack overflows which is different behavior than the
12543                                          * non-inlined case, thus disable inlining in this case.
12544                                          */
12545                                         INLINE_FAILURE("localloc");
12546
12547                                 NEW_BBLOCK (cfg, non_zero_bb);
12548                                 NEW_BBLOCK (cfg, end_bb);
12549
12550                                 /* if size != zero */
12551                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12552                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12553
12554                                 //size is zero, so result is NULL
12555                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12556                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12557
12558                                 MONO_START_BB (cfg, non_zero_bb);
12559                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12560                                 ins->dreg = alloc_ptr;
12561                                 ins->sreg1 = sp [0]->dreg;
12562                                 ins->type = STACK_PTR;
12563                                 MONO_ADD_INS (cfg->cbb, ins);
12564
12565                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12566                                 if (init_locals)
12567                                         ins->flags |= MONO_INST_INIT;
12568
12569                                 MONO_START_BB (cfg, end_bb);
12570                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12571                                 ins->type = STACK_PTR;
12572
12573                                 *sp++ = ins;
12574                                 ip += 2;
12575                                 break;
12576                         }
12577                         case CEE_ENDFILTER: {
12578                                 MonoExceptionClause *clause, *nearest;
12579                                 int cc;
12580
12581                                 CHECK_STACK (1);
12582                                 --sp;
12583                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12584                                         UNVERIFIED;
12585                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12586                                 ins->sreg1 = (*sp)->dreg;
12587                                 MONO_ADD_INS (cfg->cbb, ins);
12588                                 start_new_bblock = 1;
12589                                 ip += 2;
12590
12591                                 nearest = NULL;
12592                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12593                                         clause = &header->clauses [cc];
12594                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12595                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12596                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12597                                                 nearest = clause;
12598                                 }
12599                                 g_assert (nearest);
12600                                 if ((ip - header->code) != nearest->handler_offset)
12601                                         UNVERIFIED;
12602
12603                                 break;
12604                         }
12605                         case CEE_UNALIGNED_:
12606                                 ins_flag |= MONO_INST_UNALIGNED;
12607                                 /* FIXME: record alignment? we can assume 1 for now */
12608                                 CHECK_OPSIZE (3);
12609                                 ip += 3;
12610                                 break;
12611                         case CEE_VOLATILE_:
12612                                 ins_flag |= MONO_INST_VOLATILE;
12613                                 ip += 2;
12614                                 break;
12615                         case CEE_TAIL_:
12616                                 ins_flag   |= MONO_INST_TAILCALL;
12617                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12618                                 /* Can't inline tail calls at this time */
12619                                 inline_costs += 100000;
12620                                 ip += 2;
12621                                 break;
12622                         case CEE_INITOBJ:
12623                                 CHECK_STACK (1);
12624                                 --sp;
12625                                 CHECK_OPSIZE (6);
12626                                 token = read32 (ip + 2);
12627                                 klass = mini_get_class (method, token, generic_context);
12628                                 CHECK_TYPELOAD (klass);
12629                                 if (generic_class_is_reference_type (cfg, klass))
12630                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12631                                 else
12632                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12633                                 ip += 6;
12634                                 inline_costs += 1;
12635                                 break;
12636                         case CEE_CONSTRAINED_:
12637                                 CHECK_OPSIZE (6);
12638                                 token = read32 (ip + 2);
12639                                 constrained_class = mini_get_class (method, token, generic_context);
12640                                 CHECK_TYPELOAD (constrained_class);
12641                                 ip += 6;
12642                                 break;
12643                         case CEE_CPBLK:
12644                                 CHECK_STACK (3);
12645                                 sp -= 3;
12646                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12647                                 ip += 2;
12648                                 ins_flag = 0;
12649                                 inline_costs += 1;
12650                                 break;
12651                         case CEE_INITBLK:
12652                                 CHECK_STACK (3);
12653                                 sp -= 3;
12654                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12655                                 ip += 2;
12656                                 ins_flag = 0;
12657                                 inline_costs += 1;
12658                                 break;
12659                         case CEE_NO_:
12660                                 CHECK_OPSIZE (3);
12661                                 if (ip [2] & 0x1)
12662                                         ins_flag |= MONO_INST_NOTYPECHECK;
12663                                 if (ip [2] & 0x2)
12664                                         ins_flag |= MONO_INST_NORANGECHECK;
12665                                 /* we ignore the no-nullcheck for now since we
12666                                  * really do it explicitly only when doing callvirt->call
12667                                  */
12668                                 ip += 3;
12669                                 break;
12670                         case CEE_RETHROW: {
12671                                 MonoInst *load;
12672                                 int handler_offset = -1;
12673
12674                                 for (i = 0; i < header->num_clauses; ++i) {
12675                                         MonoExceptionClause *clause = &header->clauses [i];
12676                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12677                                                 handler_offset = clause->handler_offset;
12678                                                 break;
12679                                         }
12680                                 }
12681
12682                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12683
12684                                 if (handler_offset == -1)
12685                                         UNVERIFIED;
12686
12687                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12688                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12689                                 ins->sreg1 = load->dreg;
12690                                 MONO_ADD_INS (cfg->cbb, ins);
12691
12692                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12693                                 MONO_ADD_INS (cfg->cbb, ins);
12694
12695                                 sp = stack_start;
12696                                 link_bblock (cfg, cfg->cbb, end_bblock);
12697                                 start_new_bblock = 1;
12698                                 ip += 2;
12699                                 break;
12700                         }
12701                         case CEE_SIZEOF: {
12702                                 guint32 val;
12703                                 int ialign;
12704
12705                                 CHECK_STACK_OVF (1);
12706                                 CHECK_OPSIZE (6);
12707                                 token = read32 (ip + 2);
12708                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12709                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12710                                         CHECK_CFG_ERROR;
12711
12712                                         val = mono_type_size (type, &ialign);
12713                                 } else {
12714                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12715                                         CHECK_TYPELOAD (klass);
12716
12717                                         val = mono_type_size (&klass->byval_arg, &ialign);
12718
12719                                         if (mini_is_gsharedvt_klass (klass))
12720                                                 GSHAREDVT_FAILURE (*ip);
12721                                 }
12722                                 EMIT_NEW_ICONST (cfg, ins, val);
12723                                 *sp++= ins;
12724                                 ip += 6;
12725                                 break;
12726                         }
12727                         case CEE_REFANYTYPE: {
12728                                 MonoInst *src_var, *src;
12729
12730                                 GSHAREDVT_FAILURE (*ip);
12731
12732                                 CHECK_STACK (1);
12733                                 --sp;
12734
12735                                 // FIXME:
12736                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12737                                 if (!src_var)
12738                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12739                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12740                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12741                                 *sp++ = ins;
12742                                 ip += 2;
12743                                 break;
12744                         }
12745                         case CEE_READONLY_:
12746                                 readonly = TRUE;
12747                                 ip += 2;
12748                                 break;
12749
12750                         case CEE_UNUSED56:
12751                         case CEE_UNUSED57:
12752                         case CEE_UNUSED70:
12753                         case CEE_UNUSED:
12754                         case CEE_UNUSED99:
12755                                 UNVERIFIED;
12756
12757                         default:
12758                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12759                                 UNVERIFIED;
12760                         }
12761                         break;
12762                 }
12763                 case CEE_UNUSED58:
12764                 case CEE_UNUSED1:
12765                         UNVERIFIED;
12766
12767                 default:
12768                         g_warning ("opcode 0x%02x not handled", *ip);
12769                         UNVERIFIED;
12770                 }
12771         }
12772         if (start_new_bblock != 1)
12773                 UNVERIFIED;
12774
12775         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12776         if (cfg->cbb->next_bb) {
12777                 /* This could already be set because of inlining, #693905 */
12778                 MonoBasicBlock *bb = cfg->cbb;
12779
12780                 while (bb->next_bb)
12781                         bb = bb->next_bb;
12782                 bb->next_bb = end_bblock;
12783         } else {
12784                 cfg->cbb->next_bb = end_bblock;
12785         }
12786
12787         if (cfg->method == method && cfg->domainvar) {
12788                 MonoInst *store;
12789                 MonoInst *get_domain;
12790
12791                 cfg->cbb = init_localsbb;
12792
12793                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12794                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12795                 MONO_ADD_INS (cfg->cbb, store);
12796         }
12797
12798 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12799         if (cfg->compile_aot)
12800                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12801                 mono_get_got_var (cfg);
12802 #endif
12803
12804         if (cfg->method == method && cfg->got_var)
12805                 mono_emit_load_got_addr (cfg);
12806
12807         if (init_localsbb) {
12808                 cfg->cbb = init_localsbb;
12809                 cfg->ip = NULL;
12810                 for (i = 0; i < header->num_locals; ++i) {
12811                         emit_init_local (cfg, i, header->locals [i], init_locals);
12812                 }
12813         }
12814
12815         if (cfg->init_ref_vars && cfg->method == method) {
12816                 /* Emit initialization for ref vars */
12817                 // FIXME: Avoid duplication initialization for IL locals.
12818                 for (i = 0; i < cfg->num_varinfo; ++i) {
12819                         MonoInst *ins = cfg->varinfo [i];
12820
12821                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12822                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12823                 }
12824         }
12825
12826         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12827                 cfg->cbb = init_localsbb;
12828                 emit_push_lmf (cfg);
12829         }
12830
12831         cfg->cbb = init_localsbb;
12832         emit_instrumentation_call (cfg, mono_profiler_method_enter);
12833
12834         if (seq_points) {
12835                 MonoBasicBlock *bb;
12836
12837                 /*
12838                  * Make seq points at backward branch targets interruptable.
12839                  */
12840                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12841                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12842                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12843         }
12844
12845         /* Add a sequence point for method entry/exit events */
12846         if (seq_points && cfg->gen_sdb_seq_points) {
12847                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12848                 MONO_ADD_INS (init_localsbb, ins);
12849                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12850                 MONO_ADD_INS (cfg->bb_exit, ins);
12851         }
12852
12853         /*
12854          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12855          * the code they refer to was dead (#11880).
12856          */
12857         if (sym_seq_points) {
12858                 for (i = 0; i < header->code_size; ++i) {
12859                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12860                                 MonoInst *ins;
12861
12862                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12863                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12864                         }
12865                 }
12866         }
12867
12868         cfg->ip = NULL;
12869
12870         if (cfg->method == method) {
12871                 MonoBasicBlock *bb;
12872                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12873                         if (bb == cfg->bb_init)
12874                                 bb->region = -1;
12875                         else
12876                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12877                         if (cfg->spvars)
12878                                 mono_create_spvar_for_region (cfg, bb->region);
12879                         if (cfg->verbose_level > 2)
12880                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12881                 }
12882         } else {
12883                 MonoBasicBlock *bb;
12884                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12885                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12886                         bb->real_offset = inline_offset;
12887                 }
12888         }
12889
12890         if (inline_costs < 0) {
12891                 char *mname;
12892
12893                 /* Method is too large */
12894                 mname = mono_method_full_name (method, TRUE);
12895                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12896                 g_free (mname);
12897         }
12898
12899         if ((cfg->verbose_level > 2) && (cfg->method == method))
12900                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12901
12902         goto cleanup;
12903
12904 mono_error_exit:
12905         g_assert (!mono_error_ok (&cfg->error));
12906         goto cleanup;
12907
12908  exception_exit:
12909         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12910         goto cleanup;
12911
12912  unverified:
12913         set_exception_type_from_invalid_il (cfg, method, ip);
12914         goto cleanup;
12915
12916  cleanup:
12917         g_slist_free (class_inits);
12918         mono_basic_block_free (original_bb);
12919         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12920         if (cfg->exception_type)
12921                 return -1;
12922         else
12923                 return inline_costs;
12924 }
12925
12926 static int
12927 store_membase_reg_to_store_membase_imm (int opcode)
12928 {
12929         switch (opcode) {
12930         case OP_STORE_MEMBASE_REG:
12931                 return OP_STORE_MEMBASE_IMM;
12932         case OP_STOREI1_MEMBASE_REG:
12933                 return OP_STOREI1_MEMBASE_IMM;
12934         case OP_STOREI2_MEMBASE_REG:
12935                 return OP_STOREI2_MEMBASE_IMM;
12936         case OP_STOREI4_MEMBASE_REG:
12937                 return OP_STOREI4_MEMBASE_IMM;
12938         case OP_STOREI8_MEMBASE_REG:
12939                 return OP_STOREI8_MEMBASE_IMM;
12940         default:
12941                 g_assert_not_reached ();
12942         }
12943
12944         return -1;
12945 }
12946
12947 int
12948 mono_op_to_op_imm (int opcode)
12949 {
12950         switch (opcode) {
12951         case OP_IADD:
12952                 return OP_IADD_IMM;
12953         case OP_ISUB:
12954                 return OP_ISUB_IMM;
12955         case OP_IDIV:
12956                 return OP_IDIV_IMM;
12957         case OP_IDIV_UN:
12958                 return OP_IDIV_UN_IMM;
12959         case OP_IREM:
12960                 return OP_IREM_IMM;
12961         case OP_IREM_UN:
12962                 return OP_IREM_UN_IMM;
12963         case OP_IMUL:
12964                 return OP_IMUL_IMM;
12965         case OP_IAND:
12966                 return OP_IAND_IMM;
12967         case OP_IOR:
12968                 return OP_IOR_IMM;
12969         case OP_IXOR:
12970                 return OP_IXOR_IMM;
12971         case OP_ISHL:
12972                 return OP_ISHL_IMM;
12973         case OP_ISHR:
12974                 return OP_ISHR_IMM;
12975         case OP_ISHR_UN:
12976                 return OP_ISHR_UN_IMM;
12977
12978         case OP_LADD:
12979                 return OP_LADD_IMM;
12980         case OP_LSUB:
12981                 return OP_LSUB_IMM;
12982         case OP_LAND:
12983                 return OP_LAND_IMM;
12984         case OP_LOR:
12985                 return OP_LOR_IMM;
12986         case OP_LXOR:
12987                 return OP_LXOR_IMM;
12988         case OP_LSHL:
12989                 return OP_LSHL_IMM;
12990         case OP_LSHR:
12991                 return OP_LSHR_IMM;
12992         case OP_LSHR_UN:
12993                 return OP_LSHR_UN_IMM;
12994 #if SIZEOF_REGISTER == 8
12995         case OP_LREM:
12996                 return OP_LREM_IMM;
12997 #endif
12998
12999         case OP_COMPARE:
13000                 return OP_COMPARE_IMM;
13001         case OP_ICOMPARE:
13002                 return OP_ICOMPARE_IMM;
13003         case OP_LCOMPARE:
13004                 return OP_LCOMPARE_IMM;
13005
13006         case OP_STORE_MEMBASE_REG:
13007                 return OP_STORE_MEMBASE_IMM;
13008         case OP_STOREI1_MEMBASE_REG:
13009                 return OP_STOREI1_MEMBASE_IMM;
13010         case OP_STOREI2_MEMBASE_REG:
13011                 return OP_STOREI2_MEMBASE_IMM;
13012         case OP_STOREI4_MEMBASE_REG:
13013                 return OP_STOREI4_MEMBASE_IMM;
13014
13015 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13016         case OP_X86_PUSH:
13017                 return OP_X86_PUSH_IMM;
13018         case OP_X86_COMPARE_MEMBASE_REG:
13019                 return OP_X86_COMPARE_MEMBASE_IMM;
13020 #endif
13021 #if defined(TARGET_AMD64)
13022         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13023                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13024 #endif
13025         case OP_VOIDCALL_REG:
13026                 return OP_VOIDCALL;
13027         case OP_CALL_REG:
13028                 return OP_CALL;
13029         case OP_LCALL_REG:
13030                 return OP_LCALL;
13031         case OP_FCALL_REG:
13032                 return OP_FCALL;
13033         case OP_LOCALLOC:
13034                 return OP_LOCALLOC_IMM;
13035         }
13036
13037         return -1;
13038 }
13039
13040 static int
13041 ldind_to_load_membase (int opcode)
13042 {
13043         switch (opcode) {
13044         case CEE_LDIND_I1:
13045                 return OP_LOADI1_MEMBASE;
13046         case CEE_LDIND_U1:
13047                 return OP_LOADU1_MEMBASE;
13048         case CEE_LDIND_I2:
13049                 return OP_LOADI2_MEMBASE;
13050         case CEE_LDIND_U2:
13051                 return OP_LOADU2_MEMBASE;
13052         case CEE_LDIND_I4:
13053                 return OP_LOADI4_MEMBASE;
13054         case CEE_LDIND_U4:
13055                 return OP_LOADU4_MEMBASE;
13056         case CEE_LDIND_I:
13057                 return OP_LOAD_MEMBASE;
13058         case CEE_LDIND_REF:
13059                 return OP_LOAD_MEMBASE;
13060         case CEE_LDIND_I8:
13061                 return OP_LOADI8_MEMBASE;
13062         case CEE_LDIND_R4:
13063                 return OP_LOADR4_MEMBASE;
13064         case CEE_LDIND_R8:
13065                 return OP_LOADR8_MEMBASE;
13066         default:
13067                 g_assert_not_reached ();
13068         }
13069
13070         return -1;
13071 }
13072
13073 static int
13074 stind_to_store_membase (int opcode)
13075 {
13076         switch (opcode) {
13077         case CEE_STIND_I1:
13078                 return OP_STOREI1_MEMBASE_REG;
13079         case CEE_STIND_I2:
13080                 return OP_STOREI2_MEMBASE_REG;
13081         case CEE_STIND_I4:
13082                 return OP_STOREI4_MEMBASE_REG;
13083         case CEE_STIND_I:
13084         case CEE_STIND_REF:
13085                 return OP_STORE_MEMBASE_REG;
13086         case CEE_STIND_I8:
13087                 return OP_STOREI8_MEMBASE_REG;
13088         case CEE_STIND_R4:
13089                 return OP_STORER4_MEMBASE_REG;
13090         case CEE_STIND_R8:
13091                 return OP_STORER8_MEMBASE_REG;
13092         default:
13093                 g_assert_not_reached ();
13094         }
13095
13096         return -1;
13097 }
13098
13099 int
13100 mono_load_membase_to_load_mem (int opcode)
13101 {
13102         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13103 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13104         switch (opcode) {
13105         case OP_LOAD_MEMBASE:
13106                 return OP_LOAD_MEM;
13107         case OP_LOADU1_MEMBASE:
13108                 return OP_LOADU1_MEM;
13109         case OP_LOADU2_MEMBASE:
13110                 return OP_LOADU2_MEM;
13111         case OP_LOADI4_MEMBASE:
13112                 return OP_LOADI4_MEM;
13113         case OP_LOADU4_MEMBASE:
13114                 return OP_LOADU4_MEM;
13115 #if SIZEOF_REGISTER == 8
13116         case OP_LOADI8_MEMBASE:
13117                 return OP_LOADI8_MEM;
13118 #endif
13119         }
13120 #endif
13121
13122         return -1;
13123 }
13124
13125 static inline int
13126 op_to_op_dest_membase (int store_opcode, int opcode)
13127 {
13128 #if defined(TARGET_X86)
13129         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13130                 return -1;
13131
13132         switch (opcode) {
13133         case OP_IADD:
13134                 return OP_X86_ADD_MEMBASE_REG;
13135         case OP_ISUB:
13136                 return OP_X86_SUB_MEMBASE_REG;
13137         case OP_IAND:
13138                 return OP_X86_AND_MEMBASE_REG;
13139         case OP_IOR:
13140                 return OP_X86_OR_MEMBASE_REG;
13141         case OP_IXOR:
13142                 return OP_X86_XOR_MEMBASE_REG;
13143         case OP_ADD_IMM:
13144         case OP_IADD_IMM:
13145                 return OP_X86_ADD_MEMBASE_IMM;
13146         case OP_SUB_IMM:
13147         case OP_ISUB_IMM:
13148                 return OP_X86_SUB_MEMBASE_IMM;
13149         case OP_AND_IMM:
13150         case OP_IAND_IMM:
13151                 return OP_X86_AND_MEMBASE_IMM;
13152         case OP_OR_IMM:
13153         case OP_IOR_IMM:
13154                 return OP_X86_OR_MEMBASE_IMM;
13155         case OP_XOR_IMM:
13156         case OP_IXOR_IMM:
13157                 return OP_X86_XOR_MEMBASE_IMM;
13158         case OP_MOVE:
13159                 return OP_NOP;
13160         }
13161 #endif
13162
13163 #if defined(TARGET_AMD64)
13164         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13165                 return -1;
13166
13167         switch (opcode) {
13168         case OP_IADD:
13169                 return OP_X86_ADD_MEMBASE_REG;
13170         case OP_ISUB:
13171                 return OP_X86_SUB_MEMBASE_REG;
13172         case OP_IAND:
13173                 return OP_X86_AND_MEMBASE_REG;
13174         case OP_IOR:
13175                 return OP_X86_OR_MEMBASE_REG;
13176         case OP_IXOR:
13177                 return OP_X86_XOR_MEMBASE_REG;
13178         case OP_IADD_IMM:
13179                 return OP_X86_ADD_MEMBASE_IMM;
13180         case OP_ISUB_IMM:
13181                 return OP_X86_SUB_MEMBASE_IMM;
13182         case OP_IAND_IMM:
13183                 return OP_X86_AND_MEMBASE_IMM;
13184         case OP_IOR_IMM:
13185                 return OP_X86_OR_MEMBASE_IMM;
13186         case OP_IXOR_IMM:
13187                 return OP_X86_XOR_MEMBASE_IMM;
13188         case OP_LADD:
13189                 return OP_AMD64_ADD_MEMBASE_REG;
13190         case OP_LSUB:
13191                 return OP_AMD64_SUB_MEMBASE_REG;
13192         case OP_LAND:
13193                 return OP_AMD64_AND_MEMBASE_REG;
13194         case OP_LOR:
13195                 return OP_AMD64_OR_MEMBASE_REG;
13196         case OP_LXOR:
13197                 return OP_AMD64_XOR_MEMBASE_REG;
13198         case OP_ADD_IMM:
13199         case OP_LADD_IMM:
13200                 return OP_AMD64_ADD_MEMBASE_IMM;
13201         case OP_SUB_IMM:
13202         case OP_LSUB_IMM:
13203                 return OP_AMD64_SUB_MEMBASE_IMM;
13204         case OP_AND_IMM:
13205         case OP_LAND_IMM:
13206                 return OP_AMD64_AND_MEMBASE_IMM;
13207         case OP_OR_IMM:
13208         case OP_LOR_IMM:
13209                 return OP_AMD64_OR_MEMBASE_IMM;
13210         case OP_XOR_IMM:
13211         case OP_LXOR_IMM:
13212                 return OP_AMD64_XOR_MEMBASE_IMM;
13213         case OP_MOVE:
13214                 return OP_NOP;
13215         }
13216 #endif
13217
13218         return -1;
13219 }
13220
13221 static inline int
13222 op_to_op_store_membase (int store_opcode, int opcode)
13223 {
13224 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13225         switch (opcode) {
13226         case OP_ICEQ:
13227                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13228                         return OP_X86_SETEQ_MEMBASE;
13229         case OP_CNE:
13230                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13231                         return OP_X86_SETNE_MEMBASE;
13232         }
13233 #endif
13234
13235         return -1;
13236 }
13237
13238 static inline int
13239 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13240 {
13241 #ifdef TARGET_X86
13242         /* FIXME: This has sign extension issues */
13243         /*
13244         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13245                 return OP_X86_COMPARE_MEMBASE8_IMM;
13246         */
13247
13248         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13249                 return -1;
13250
13251         switch (opcode) {
13252         case OP_X86_PUSH:
13253                 return OP_X86_PUSH_MEMBASE;
13254         case OP_COMPARE_IMM:
13255         case OP_ICOMPARE_IMM:
13256                 return OP_X86_COMPARE_MEMBASE_IMM;
13257         case OP_COMPARE:
13258         case OP_ICOMPARE:
13259                 return OP_X86_COMPARE_MEMBASE_REG;
13260         }
13261 #endif
13262
13263 #ifdef TARGET_AMD64
13264         /* FIXME: This has sign extension issues */
13265         /*
13266         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13267                 return OP_X86_COMPARE_MEMBASE8_IMM;
13268         */
13269
13270         switch (opcode) {
13271         case OP_X86_PUSH:
13272                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13273                         return OP_X86_PUSH_MEMBASE;
13274                 break;
13275                 /* FIXME: This only works for 32 bit immediates
13276         case OP_COMPARE_IMM:
13277         case OP_LCOMPARE_IMM:
13278                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13279                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13280                 */
13281         case OP_ICOMPARE_IMM:
13282                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13283                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13284                 break;
13285         case OP_COMPARE:
13286         case OP_LCOMPARE:
13287                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13288                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13289                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13290                         return OP_AMD64_COMPARE_MEMBASE_REG;
13291                 break;
13292         case OP_ICOMPARE:
13293                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13294                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13295                 break;
13296         }
13297 #endif
13298
13299         return -1;
13300 }
13301
13302 static inline int
13303 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13304 {
13305 #ifdef TARGET_X86
13306         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13307                 return -1;
13308
13309         switch (opcode) {
13310         case OP_COMPARE:
13311         case OP_ICOMPARE:
13312                 return OP_X86_COMPARE_REG_MEMBASE;
13313         case OP_IADD:
13314                 return OP_X86_ADD_REG_MEMBASE;
13315         case OP_ISUB:
13316                 return OP_X86_SUB_REG_MEMBASE;
13317         case OP_IAND:
13318                 return OP_X86_AND_REG_MEMBASE;
13319         case OP_IOR:
13320                 return OP_X86_OR_REG_MEMBASE;
13321         case OP_IXOR:
13322                 return OP_X86_XOR_REG_MEMBASE;
13323         }
13324 #endif
13325
13326 #ifdef TARGET_AMD64
13327         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13328                 switch (opcode) {
13329                 case OP_ICOMPARE:
13330                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13331                 case OP_IADD:
13332                         return OP_X86_ADD_REG_MEMBASE;
13333                 case OP_ISUB:
13334                         return OP_X86_SUB_REG_MEMBASE;
13335                 case OP_IAND:
13336                         return OP_X86_AND_REG_MEMBASE;
13337                 case OP_IOR:
13338                         return OP_X86_OR_REG_MEMBASE;
13339                 case OP_IXOR:
13340                         return OP_X86_XOR_REG_MEMBASE;
13341                 }
13342         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13343                 switch (opcode) {
13344                 case OP_COMPARE:
13345                 case OP_LCOMPARE:
13346                         return OP_AMD64_COMPARE_REG_MEMBASE;
13347                 case OP_LADD:
13348                         return OP_AMD64_ADD_REG_MEMBASE;
13349                 case OP_LSUB:
13350                         return OP_AMD64_SUB_REG_MEMBASE;
13351                 case OP_LAND:
13352                         return OP_AMD64_AND_REG_MEMBASE;
13353                 case OP_LOR:
13354                         return OP_AMD64_OR_REG_MEMBASE;
13355                 case OP_LXOR:
13356                         return OP_AMD64_XOR_REG_MEMBASE;
13357                 }
13358         }
13359 #endif
13360
13361         return -1;
13362 }
13363
13364 int
13365 mono_op_to_op_imm_noemul (int opcode)
13366 {
13367         switch (opcode) {
13368 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13369         case OP_LSHR:
13370         case OP_LSHL:
13371         case OP_LSHR_UN:
13372                 return -1;
13373 #endif
13374 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13375         case OP_IDIV:
13376         case OP_IDIV_UN:
13377         case OP_IREM:
13378         case OP_IREM_UN:
13379                 return -1;
13380 #endif
13381 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13382         case OP_IMUL:
13383                 return -1;
13384 #endif
13385         default:
13386                 return mono_op_to_op_imm (opcode);
13387         }
13388 }
13389
13390 /**
13391  * mono_handle_global_vregs:
13392  *
13393  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13394  * for them.
13395  */
13396 void
13397 mono_handle_global_vregs (MonoCompile *cfg)
13398 {
13399         gint32 *vreg_to_bb;
13400         MonoBasicBlock *bb;
13401         int i, pos;
13402
13403         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13404
13405 #ifdef MONO_ARCH_SIMD_INTRINSICS
13406         if (cfg->uses_simd_intrinsics)
13407                 mono_simd_simplify_indirection (cfg);
13408 #endif
13409
13410         /* Find local vregs used in more than one bb */
13411         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13412                 MonoInst *ins = bb->code;
13413                 int block_num = bb->block_num;
13414
13415                 if (cfg->verbose_level > 2)
13416                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13417
13418                 cfg->cbb = bb;
13419                 for (; ins; ins = ins->next) {
13420                         const char *spec = INS_INFO (ins->opcode);
13421                         int regtype = 0, regindex;
13422                         gint32 prev_bb;
13423
13424                         if (G_UNLIKELY (cfg->verbose_level > 2))
13425                                 mono_print_ins (ins);
13426
13427                         g_assert (ins->opcode >= MONO_CEE_LAST);
13428
13429                         for (regindex = 0; regindex < 4; regindex ++) {
13430                                 int vreg = 0;
13431
13432                                 if (regindex == 0) {
13433                                         regtype = spec [MONO_INST_DEST];
13434                                         if (regtype == ' ')
13435                                                 continue;
13436                                         vreg = ins->dreg;
13437                                 } else if (regindex == 1) {
13438                                         regtype = spec [MONO_INST_SRC1];
13439                                         if (regtype == ' ')
13440                                                 continue;
13441                                         vreg = ins->sreg1;
13442                                 } else if (regindex == 2) {
13443                                         regtype = spec [MONO_INST_SRC2];
13444                                         if (regtype == ' ')
13445                                                 continue;
13446                                         vreg = ins->sreg2;
13447                                 } else if (regindex == 3) {
13448                                         regtype = spec [MONO_INST_SRC3];
13449                                         if (regtype == ' ')
13450                                                 continue;
13451                                         vreg = ins->sreg3;
13452                                 }
13453
13454 #if SIZEOF_REGISTER == 4
13455                                 /* In the LLVM case, the long opcodes are not decomposed */
13456                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13457                                         /*
13458                                          * Since some instructions reference the original long vreg,
13459                                          * and some reference the two component vregs, it is quite hard
13460                                          * to determine when it needs to be global. So be conservative.
13461                                          */
13462                                         if (!get_vreg_to_inst (cfg, vreg)) {
13463                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13464
13465                                                 if (cfg->verbose_level > 2)
13466                                                         printf ("LONG VREG R%d made global.\n", vreg);
13467                                         }
13468
13469                                         /*
13470                                          * Make the component vregs volatile since the optimizations can
13471                                          * get confused otherwise.
13472                                          */
13473                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13474                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13475                                 }
13476 #endif
13477
13478                                 g_assert (vreg != -1);
13479
13480                                 prev_bb = vreg_to_bb [vreg];
13481                                 if (prev_bb == 0) {
13482                                         /* 0 is a valid block num */
13483                                         vreg_to_bb [vreg] = block_num + 1;
13484                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13485                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13486                                                 continue;
13487
13488                                         if (!get_vreg_to_inst (cfg, vreg)) {
13489                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13490                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13491
13492                                                 switch (regtype) {
13493                                                 case 'i':
13494                                                         if (vreg_is_ref (cfg, vreg))
13495                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13496                                                         else
13497                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13498                                                         break;
13499                                                 case 'l':
13500                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13501                                                         break;
13502                                                 case 'f':
13503                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13504                                                         break;
13505                                                 case 'v':
13506                                                 case 'x':
13507                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13508                                                         break;
13509                                                 default:
13510                                                         g_assert_not_reached ();
13511                                                 }
13512                                         }
13513
13514                                         /* Flag as having been used in more than one bb */
13515                                         vreg_to_bb [vreg] = -1;
13516                                 }
13517                         }
13518                 }
13519         }
13520
13521         /* If a variable is used in only one bblock, convert it into a local vreg */
13522         for (i = 0; i < cfg->num_varinfo; i++) {
13523                 MonoInst *var = cfg->varinfo [i];
13524                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13525
13526                 switch (var->type) {
13527                 case STACK_I4:
13528                 case STACK_OBJ:
13529                 case STACK_PTR:
13530                 case STACK_MP:
13531                 case STACK_VTYPE:
13532 #if SIZEOF_REGISTER == 8
13533                 case STACK_I8:
13534 #endif
13535 #if !defined(TARGET_X86)
13536                 /* Enabling this screws up the fp stack on x86 */
13537                 case STACK_R8:
13538 #endif
13539                         if (mono_arch_is_soft_float ())
13540                                 break;
13541
13542                         /*
13543                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13544                                 break;
13545                         */
13546
13547                         /* Arguments are implicitly global */
13548                         /* Putting R4 vars into registers doesn't work currently */
13549                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13550                         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) {
13551                                 /*
13552                                  * Make that the variable's liveness interval doesn't contain a call, since
13553                                  * that would cause the lvreg to be spilled, making the whole optimization
13554                                  * useless.
13555                                  */
13556                                 /* This is too slow for JIT compilation */
13557 #if 0
13558                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13559                                         MonoInst *ins;
13560                                         int def_index, call_index, ins_index;
13561                                         gboolean spilled = FALSE;
13562
13563                                         def_index = -1;
13564                                         call_index = -1;
13565                                         ins_index = 0;
13566                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13567                                                 const char *spec = INS_INFO (ins->opcode);
13568
13569                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13570                                                         def_index = ins_index;
13571
13572                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13573                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13574                                                         if (call_index > def_index) {
13575                                                                 spilled = TRUE;
13576                                                                 break;
13577                                                         }
13578                                                 }
13579
13580                                                 if (MONO_IS_CALL (ins))
13581                                                         call_index = ins_index;
13582
13583                                                 ins_index ++;
13584                                         }
13585
13586                                         if (spilled)
13587                                                 break;
13588                                 }
13589 #endif
13590
13591                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13592                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13593                                 var->flags |= MONO_INST_IS_DEAD;
13594                                 cfg->vreg_to_inst [var->dreg] = NULL;
13595                         }
13596                         break;
13597                 }
13598         }
13599
13600         /*
13601          * Compress the varinfo and vars tables so the liveness computation is faster and
13602          * takes up less space.
13603          */
13604         pos = 0;
13605         for (i = 0; i < cfg->num_varinfo; ++i) {
13606                 MonoInst *var = cfg->varinfo [i];
13607                 if (pos < i && cfg->locals_start == i)
13608                         cfg->locals_start = pos;
13609                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13610                         if (pos < i) {
13611                                 cfg->varinfo [pos] = cfg->varinfo [i];
13612                                 cfg->varinfo [pos]->inst_c0 = pos;
13613                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13614                                 cfg->vars [pos].idx = pos;
13615 #if SIZEOF_REGISTER == 4
13616                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13617                                         /* Modify the two component vars too */
13618                                         MonoInst *var1;
13619
13620                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13621                                         var1->inst_c0 = pos;
13622                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13623                                         var1->inst_c0 = pos;
13624                                 }
13625 #endif
13626                         }
13627                         pos ++;
13628                 }
13629         }
13630         cfg->num_varinfo = pos;
13631         if (cfg->locals_start > cfg->num_varinfo)
13632                 cfg->locals_start = cfg->num_varinfo;
13633 }
13634
13635 /*
13636  * mono_allocate_gsharedvt_vars:
13637  *
13638  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13639  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13640  */
13641 void
13642 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13643 {
13644         int i;
13645
13646         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13647
13648         for (i = 0; i < cfg->num_varinfo; ++i) {
13649                 MonoInst *ins = cfg->varinfo [i];
13650                 int idx;
13651
13652                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13653                         if (i >= cfg->locals_start) {
13654                                 /* Local */
13655                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13656                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13657                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13658                                 ins->inst_imm = idx;
13659                         } else {
13660                                 /* Arg */
13661                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13662                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13663                         }
13664                 }
13665         }
13666 }
13667
13668 /**
13669  * mono_spill_global_vars:
13670  *
13671  *   Generate spill code for variables which are not allocated to registers,
13672  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13673  * code is generated which could be optimized by the local optimization passes.
13674  */
13675 void
13676 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13677 {
13678         MonoBasicBlock *bb;
13679         char spec2 [16];
13680         int orig_next_vreg;
13681         guint32 *vreg_to_lvreg;
13682         guint32 *lvregs;
13683         guint32 i, lvregs_len, lvregs_size;
13684         gboolean dest_has_lvreg = FALSE;
13685         MonoStackType stacktypes [128];
13686         MonoInst **live_range_start, **live_range_end;
13687         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13688
13689         *need_local_opts = FALSE;
13690
13691         memset (spec2, 0, sizeof (spec2));
13692
13693         /* FIXME: Move this function to mini.c */
13694         stacktypes ['i'] = STACK_PTR;
13695         stacktypes ['l'] = STACK_I8;
13696         stacktypes ['f'] = STACK_R8;
13697 #ifdef MONO_ARCH_SIMD_INTRINSICS
13698         stacktypes ['x'] = STACK_VTYPE;
13699 #endif
13700
13701 #if SIZEOF_REGISTER == 4
13702         /* Create MonoInsts for longs */
13703         for (i = 0; i < cfg->num_varinfo; i++) {
13704                 MonoInst *ins = cfg->varinfo [i];
13705
13706                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13707                         switch (ins->type) {
13708                         case STACK_R8:
13709                         case STACK_I8: {
13710                                 MonoInst *tree;
13711
13712                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13713                                         break;
13714
13715                                 g_assert (ins->opcode == OP_REGOFFSET);
13716
13717                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13718                                 g_assert (tree);
13719                                 tree->opcode = OP_REGOFFSET;
13720                                 tree->inst_basereg = ins->inst_basereg;
13721                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13722
13723                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13724                                 g_assert (tree);
13725                                 tree->opcode = OP_REGOFFSET;
13726                                 tree->inst_basereg = ins->inst_basereg;
13727                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13728                                 break;
13729                         }
13730                         default:
13731                                 break;
13732                         }
13733                 }
13734         }
13735 #endif
13736
13737         if (cfg->compute_gc_maps) {
13738                 /* registers need liveness info even for !non refs */
13739                 for (i = 0; i < cfg->num_varinfo; i++) {
13740                         MonoInst *ins = cfg->varinfo [i];
13741
13742                         if (ins->opcode == OP_REGVAR)
13743                                 ins->flags |= MONO_INST_GC_TRACK;
13744                 }
13745         }
13746
13747         /* FIXME: widening and truncation */
13748
13749         /*
13750          * As an optimization, when a variable allocated to the stack is first loaded into
13751          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13752          * the variable again.
13753          */
13754         orig_next_vreg = cfg->next_vreg;
13755         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13756         lvregs_size = 1024;
13757         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13758         lvregs_len = 0;
13759
13760         /*
13761          * These arrays contain the first and last instructions accessing a given
13762          * variable.
13763          * Since we emit bblocks in the same order we process them here, and we
13764          * don't split live ranges, these will precisely describe the live range of
13765          * the variable, i.e. the instruction range where a valid value can be found
13766          * in the variables location.
13767          * The live range is computed using the liveness info computed by the liveness pass.
13768          * We can't use vmv->range, since that is an abstract live range, and we need
13769          * one which is instruction precise.
13770          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13771          */
13772         /* FIXME: Only do this if debugging info is requested */
13773         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13774         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13775         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13776         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13777
13778         /* Add spill loads/stores */
13779         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13780                 MonoInst *ins;
13781
13782                 if (cfg->verbose_level > 2)
13783                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13784
13785                 /* Clear vreg_to_lvreg array */
13786                 for (i = 0; i < lvregs_len; i++)
13787                         vreg_to_lvreg [lvregs [i]] = 0;
13788                 lvregs_len = 0;
13789
13790                 cfg->cbb = bb;
13791                 MONO_BB_FOR_EACH_INS (bb, ins) {
13792                         const char *spec = INS_INFO (ins->opcode);
13793                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13794                         gboolean store, no_lvreg;
13795                         int sregs [MONO_MAX_SRC_REGS];
13796
13797                         if (G_UNLIKELY (cfg->verbose_level > 2))
13798                                 mono_print_ins (ins);
13799
13800                         if (ins->opcode == OP_NOP)
13801                                 continue;
13802
13803                         /*
13804                          * We handle LDADDR here as well, since it can only be decomposed
13805                          * when variable addresses are known.
13806                          */
13807                         if (ins->opcode == OP_LDADDR) {
13808                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13809
13810                                 if (var->opcode == OP_VTARG_ADDR) {
13811                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13812                                         MonoInst *vtaddr = var->inst_left;
13813                                         if (vtaddr->opcode == OP_REGVAR) {
13814                                                 ins->opcode = OP_MOVE;
13815                                                 ins->sreg1 = vtaddr->dreg;
13816                                         }
13817                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13818                                                 ins->opcode = OP_LOAD_MEMBASE;
13819                                                 ins->inst_basereg = vtaddr->inst_basereg;
13820                                                 ins->inst_offset = vtaddr->inst_offset;
13821                                         } else
13822                                                 NOT_IMPLEMENTED;
13823                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13824                                         /* gsharedvt arg passed by ref */
13825                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13826
13827                                         ins->opcode = OP_LOAD_MEMBASE;
13828                                         ins->inst_basereg = var->inst_basereg;
13829                                         ins->inst_offset = var->inst_offset;
13830                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13831                                         MonoInst *load, *load2, *load3;
13832                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13833                                         int reg1, reg2, reg3;
13834                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13835                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13836
13837                                         /*
13838                                          * gsharedvt local.
13839                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13840                                          */
13841
13842                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13843
13844                                         g_assert (info_var);
13845                                         g_assert (locals_var);
13846
13847                                         /* Mark the instruction used to compute the locals var as used */
13848                                         cfg->gsharedvt_locals_var_ins = NULL;
13849
13850                                         /* Load the offset */
13851                                         if (info_var->opcode == OP_REGOFFSET) {
13852                                                 reg1 = alloc_ireg (cfg);
13853                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13854                                         } else if (info_var->opcode == OP_REGVAR) {
13855                                                 load = NULL;
13856                                                 reg1 = info_var->dreg;
13857                                         } else {
13858                                                 g_assert_not_reached ();
13859                                         }
13860                                         reg2 = alloc_ireg (cfg);
13861                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13862                                         /* Load the locals area address */
13863                                         reg3 = alloc_ireg (cfg);
13864                                         if (locals_var->opcode == OP_REGOFFSET) {
13865                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13866                                         } else if (locals_var->opcode == OP_REGVAR) {
13867                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13868                                         } else {
13869                                                 g_assert_not_reached ();
13870                                         }
13871                                         /* Compute the address */
13872                                         ins->opcode = OP_PADD;
13873                                         ins->sreg1 = reg3;
13874                                         ins->sreg2 = reg2;
13875
13876                                         mono_bblock_insert_before_ins (bb, ins, load3);
13877                                         mono_bblock_insert_before_ins (bb, load3, load2);
13878                                         if (load)
13879                                                 mono_bblock_insert_before_ins (bb, load2, load);
13880                                 } else {
13881                                         g_assert (var->opcode == OP_REGOFFSET);
13882
13883                                         ins->opcode = OP_ADD_IMM;
13884                                         ins->sreg1 = var->inst_basereg;
13885                                         ins->inst_imm = var->inst_offset;
13886                                 }
13887
13888                                 *need_local_opts = TRUE;
13889                                 spec = INS_INFO (ins->opcode);
13890                         }
13891
13892                         if (ins->opcode < MONO_CEE_LAST) {
13893                                 mono_print_ins (ins);
13894                                 g_assert_not_reached ();
13895                         }
13896
13897                         /*
13898                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13899                          * src register.
13900                          * FIXME:
13901                          */
13902                         if (MONO_IS_STORE_MEMBASE (ins)) {
13903                                 tmp_reg = ins->dreg;
13904                                 ins->dreg = ins->sreg2;
13905                                 ins->sreg2 = tmp_reg;
13906                                 store = TRUE;
13907
13908                                 spec2 [MONO_INST_DEST] = ' ';
13909                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13910                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13911                                 spec2 [MONO_INST_SRC3] = ' ';
13912                                 spec = spec2;
13913                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13914                                 g_assert_not_reached ();
13915                         else
13916                                 store = FALSE;
13917                         no_lvreg = FALSE;
13918
13919                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13920                                 printf ("\t %.3s %d", spec, ins->dreg);
13921                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13922                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13923                                         printf (" %d", sregs [srcindex]);
13924                                 printf ("\n");
13925                         }
13926
13927                         /***************/
13928                         /*    DREG     */
13929                         /***************/
13930                         regtype = spec [MONO_INST_DEST];
13931                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13932                         prev_dreg = -1;
13933
13934                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13935                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13936                                 MonoInst *store_ins;
13937                                 int store_opcode;
13938                                 MonoInst *def_ins = ins;
13939                                 int dreg = ins->dreg; /* The original vreg */
13940
13941                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13942
13943                                 if (var->opcode == OP_REGVAR) {
13944                                         ins->dreg = var->dreg;
13945                                 } 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)) {
13946                                         /*
13947                                          * Instead of emitting a load+store, use a _membase opcode.
13948                                          */
13949                                         g_assert (var->opcode == OP_REGOFFSET);
13950                                         if (ins->opcode == OP_MOVE) {
13951                                                 NULLIFY_INS (ins);
13952                                                 def_ins = NULL;
13953                                         } else {
13954                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13955                                                 ins->inst_basereg = var->inst_basereg;
13956                                                 ins->inst_offset = var->inst_offset;
13957                                                 ins->dreg = -1;
13958                                         }
13959                                         spec = INS_INFO (ins->opcode);
13960                                 } else {
13961                                         guint32 lvreg;
13962
13963                                         g_assert (var->opcode == OP_REGOFFSET);
13964
13965                                         prev_dreg = ins->dreg;
13966
13967                                         /* Invalidate any previous lvreg for this vreg */
13968                                         vreg_to_lvreg [ins->dreg] = 0;
13969
13970                                         lvreg = 0;
13971
13972                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13973                                                 regtype = 'l';
13974                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13975                                         }
13976
13977                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13978
13979 #if SIZEOF_REGISTER != 8
13980                                         if (regtype == 'l') {
13981                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, MONO_LVREG_LS (ins->dreg));
13982                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13983                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, MONO_LVREG_MS (ins->dreg));
13984                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13985                                                 def_ins = store_ins;
13986                                         }
13987                                         else
13988 #endif
13989                                         {
13990                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13991
13992                                                 /* Try to fuse the store into the instruction itself */
13993                                                 /* FIXME: Add more instructions */
13994                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13995                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13996                                                         ins->inst_imm = ins->inst_c0;
13997                                                         ins->inst_destbasereg = var->inst_basereg;
13998                                                         ins->inst_offset = var->inst_offset;
13999                                                         spec = INS_INFO (ins->opcode);
14000                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14001                                                         ins->opcode = store_opcode;
14002                                                         ins->inst_destbasereg = var->inst_basereg;
14003                                                         ins->inst_offset = var->inst_offset;
14004
14005                                                         no_lvreg = TRUE;
14006
14007                                                         tmp_reg = ins->dreg;
14008                                                         ins->dreg = ins->sreg2;
14009                                                         ins->sreg2 = tmp_reg;
14010                                                         store = TRUE;
14011
14012                                                         spec2 [MONO_INST_DEST] = ' ';
14013                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14014                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14015                                                         spec2 [MONO_INST_SRC3] = ' ';
14016                                                         spec = spec2;
14017                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14018                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14019                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14020                                                         ins->dreg = -1;
14021                                                         ins->inst_basereg = var->inst_basereg;
14022                                                         ins->inst_offset = var->inst_offset;
14023                                                         spec = INS_INFO (ins->opcode);
14024                                                 } else {
14025                                                         /* printf ("INS: "); mono_print_ins (ins); */
14026                                                         /* Create a store instruction */
14027                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14028
14029                                                         /* Insert it after the instruction */
14030                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14031
14032                                                         def_ins = store_ins;
14033
14034                                                         /*
14035                                                          * We can't assign ins->dreg to var->dreg here, since the
14036                                                          * sregs could use it. So set a flag, and do it after
14037                                                          * the sregs.
14038                                                          */
14039                                                         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)))
14040                                                                 dest_has_lvreg = TRUE;
14041                                                 }
14042                                         }
14043                                 }
14044
14045                                 if (def_ins && !live_range_start [dreg]) {
14046                                         live_range_start [dreg] = def_ins;
14047                                         live_range_start_bb [dreg] = bb;
14048                                 }
14049
14050                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14051                                         MonoInst *tmp;
14052
14053                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14054                                         tmp->inst_c1 = dreg;
14055                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14056                                 }
14057                         }
14058
14059                         /************/
14060                         /*  SREGS   */
14061                         /************/
14062                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14063                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14064                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14065                                 sreg = sregs [srcindex];
14066
14067                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14068                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14069                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14070                                         MonoInst *use_ins = ins;
14071                                         MonoInst *load_ins;
14072                                         guint32 load_opcode;
14073
14074                                         if (var->opcode == OP_REGVAR) {
14075                                                 sregs [srcindex] = var->dreg;
14076                                                 //mono_inst_set_src_registers (ins, sregs);
14077                                                 live_range_end [sreg] = use_ins;
14078                                                 live_range_end_bb [sreg] = bb;
14079
14080                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14081                                                         MonoInst *tmp;
14082
14083                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14084                                                         /* var->dreg is a hreg */
14085                                                         tmp->inst_c1 = sreg;
14086                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14087                                                 }
14088
14089                                                 continue;
14090                                         }
14091
14092                                         g_assert (var->opcode == OP_REGOFFSET);
14093
14094                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14095
14096                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14097
14098                                         if (vreg_to_lvreg [sreg]) {
14099                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14100
14101                                                 /* The variable is already loaded to an lvreg */
14102                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14103                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14104                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14105                                                 //mono_inst_set_src_registers (ins, sregs);
14106                                                 continue;
14107                                         }
14108
14109                                         /* Try to fuse the load into the instruction */
14110                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14111                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14112                                                 sregs [0] = var->inst_basereg;
14113                                                 //mono_inst_set_src_registers (ins, sregs);
14114                                                 ins->inst_offset = var->inst_offset;
14115                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14116                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14117                                                 sregs [1] = var->inst_basereg;
14118                                                 //mono_inst_set_src_registers (ins, sregs);
14119                                                 ins->inst_offset = var->inst_offset;
14120                                         } else {
14121                                                 if (MONO_IS_REAL_MOVE (ins)) {
14122                                                         ins->opcode = OP_NOP;
14123                                                         sreg = ins->dreg;
14124                                                 } else {
14125                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14126
14127                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14128
14129                                                         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) {
14130                                                                 if (var->dreg == prev_dreg) {
14131                                                                         /*
14132                                                                          * sreg refers to the value loaded by the load
14133                                                                          * emitted below, but we need to use ins->dreg
14134                                                                          * since it refers to the store emitted earlier.
14135                                                                          */
14136                                                                         sreg = ins->dreg;
14137                                                                 }
14138                                                                 g_assert (sreg != -1);
14139                                                                 vreg_to_lvreg [var->dreg] = sreg;
14140                                                                 if (lvregs_len >= lvregs_size) {
14141                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14142                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14143                                                                         lvregs = new_lvregs;
14144                                                                         lvregs_size *= 2;
14145                                                                 }
14146                                                                 lvregs [lvregs_len ++] = var->dreg;
14147                                                         }
14148                                                 }
14149
14150                                                 sregs [srcindex] = sreg;
14151                                                 //mono_inst_set_src_registers (ins, sregs);
14152
14153 #if SIZEOF_REGISTER != 8
14154                                                 if (regtype == 'l') {
14155                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14156                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14157                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14158                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14159                                                         use_ins = load_ins;
14160                                                 }
14161                                                 else
14162 #endif
14163                                                 {
14164 #if SIZEOF_REGISTER == 4
14165                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14166 #endif
14167                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14168                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14169                                                         use_ins = load_ins;
14170                                                 }
14171                                         }
14172
14173                                         if (var->dreg < orig_next_vreg) {
14174                                                 live_range_end [var->dreg] = use_ins;
14175                                                 live_range_end_bb [var->dreg] = bb;
14176                                         }
14177
14178                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14179                                                 MonoInst *tmp;
14180
14181                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14182                                                 tmp->inst_c1 = var->dreg;
14183                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14184                                         }
14185                                 }
14186                         }
14187                         mono_inst_set_src_registers (ins, sregs);
14188
14189                         if (dest_has_lvreg) {
14190                                 g_assert (ins->dreg != -1);
14191                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14192                                 if (lvregs_len >= lvregs_size) {
14193                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14194                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14195                                         lvregs = new_lvregs;
14196                                         lvregs_size *= 2;
14197                                 }
14198                                 lvregs [lvregs_len ++] = prev_dreg;
14199                                 dest_has_lvreg = FALSE;
14200                         }
14201
14202                         if (store) {
14203                                 tmp_reg = ins->dreg;
14204                                 ins->dreg = ins->sreg2;
14205                                 ins->sreg2 = tmp_reg;
14206                         }
14207
14208                         if (MONO_IS_CALL (ins)) {
14209                                 /* Clear vreg_to_lvreg array */
14210                                 for (i = 0; i < lvregs_len; i++)
14211                                         vreg_to_lvreg [lvregs [i]] = 0;
14212                                 lvregs_len = 0;
14213                         } else if (ins->opcode == OP_NOP) {
14214                                 ins->dreg = -1;
14215                                 MONO_INST_NULLIFY_SREGS (ins);
14216                         }
14217
14218                         if (cfg->verbose_level > 2)
14219                                 mono_print_ins_index (1, ins);
14220                 }
14221
14222                 /* Extend the live range based on the liveness info */
14223                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14224                         for (i = 0; i < cfg->num_varinfo; i ++) {
14225                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14226
14227                                 if (vreg_is_volatile (cfg, vi->vreg))
14228                                         /* The liveness info is incomplete */
14229                                         continue;
14230
14231                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14232                                         /* Live from at least the first ins of this bb */
14233                                         live_range_start [vi->vreg] = bb->code;
14234                                         live_range_start_bb [vi->vreg] = bb;
14235                                 }
14236
14237                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14238                                         /* Live at least until the last ins of this bb */
14239                                         live_range_end [vi->vreg] = bb->last_ins;
14240                                         live_range_end_bb [vi->vreg] = bb;
14241                                 }
14242                         }
14243                 }
14244         }
14245
14246         /*
14247          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14248          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14249          */
14250         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14251                 for (i = 0; i < cfg->num_varinfo; ++i) {
14252                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14253                         MonoInst *ins;
14254
14255                         if (live_range_start [vreg]) {
14256                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14257                                 ins->inst_c0 = i;
14258                                 ins->inst_c1 = vreg;
14259                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14260                         }
14261                         if (live_range_end [vreg]) {
14262                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14263                                 ins->inst_c0 = i;
14264                                 ins->inst_c1 = vreg;
14265                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14266                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14267                                 else
14268                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14269                         }
14270                 }
14271         }
14272
14273         if (cfg->gsharedvt_locals_var_ins) {
14274                 /* Nullify if unused */
14275                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14276                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14277         }
14278
14279         g_free (live_range_start);
14280         g_free (live_range_end);
14281         g_free (live_range_start_bb);
14282         g_free (live_range_end_bb);
14283 }
14284
14285
14286 /**
14287  * FIXME:
14288  * - use 'iadd' instead of 'int_add'
14289  * - handling ovf opcodes: decompose in method_to_ir.
14290  * - unify iregs/fregs
14291  *   -> partly done, the missing parts are:
14292  *   - a more complete unification would involve unifying the hregs as well, so
14293  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14294  *     would no longer map to the machine hregs, so the code generators would need to
14295  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14296  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14297  *     fp/non-fp branches speeds it up by about 15%.
14298  * - use sext/zext opcodes instead of shifts
14299  * - add OP_ICALL
14300  * - get rid of TEMPLOADs if possible and use vregs instead
14301  * - clean up usage of OP_P/OP_ opcodes
14302  * - cleanup usage of DUMMY_USE
14303  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14304  *   stack
14305  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14306  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14307  * - make sure handle_stack_args () is called before the branch is emitted
14308  * - when the new IR is done, get rid of all unused stuff
14309  * - COMPARE/BEQ as separate instructions or unify them ?
14310  *   - keeping them separate allows specialized compare instructions like
14311  *     compare_imm, compare_membase
14312  *   - most back ends unify fp compare+branch, fp compare+ceq
14313  * - integrate mono_save_args into inline_method
14314  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14315  * - handle long shift opts on 32 bit platforms somehow: they require
14316  *   3 sregs (2 for arg1 and 1 for arg2)
14317  * - make byref a 'normal' type.
14318  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14319  *   variable if needed.
14320  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14321  *   like inline_method.
14322  * - remove inlining restrictions
14323  * - fix LNEG and enable cfold of INEG
14324  * - generalize x86 optimizations like ldelema as a peephole optimization
14325  * - add store_mem_imm for amd64
14326  * - optimize the loading of the interruption flag in the managed->native wrappers
14327  * - avoid special handling of OP_NOP in passes
14328  * - move code inserting instructions into one function/macro.
14329  * - try a coalescing phase after liveness analysis
14330  * - add float -> vreg conversion + local optimizations on !x86
14331  * - figure out how to handle decomposed branches during optimizations, ie.
14332  *   compare+branch, op_jump_table+op_br etc.
14333  * - promote RuntimeXHandles to vregs
14334  * - vtype cleanups:
14335  *   - add a NEW_VARLOADA_VREG macro
14336  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14337  *   accessing vtype fields.
14338  * - get rid of I8CONST on 64 bit platforms
14339  * - dealing with the increase in code size due to branches created during opcode
14340  *   decomposition:
14341  *   - use extended basic blocks
14342  *     - all parts of the JIT
14343  *     - handle_global_vregs () && local regalloc
14344  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14345  * - sources of increase in code size:
14346  *   - vtypes
14347  *   - long compares
14348  *   - isinst and castclass
14349  *   - lvregs not allocated to global registers even if used multiple times
14350  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14351  *   meaningful.
14352  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14353  * - add all micro optimizations from the old JIT
14354  * - put tree optimizations into the deadce pass
14355  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14356  *   specific function.
14357  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14358  *   fcompare + branchCC.
14359  * - create a helper function for allocating a stack slot, taking into account
14360  *   MONO_CFG_HAS_SPILLUP.
14361  * - merge r68207.
14362  * - optimize mono_regstate2_alloc_int/float.
14363  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14364  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14365  *   parts of the tree could be separated by other instructions, killing the tree
14366  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14367  *   instructions if the result of the load is used multiple times ?
14368  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14369  * - LAST MERGE: 108395.
14370  * - when returning vtypes in registers, generate IR and append it to the end of the
14371  *   last bb instead of doing it in the epilog.
14372  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14373  */
14374
14375 /*
14376
14377 NOTES
14378 -----
14379
14380 - When to decompose opcodes:
14381   - earlier: this makes some optimizations hard to implement, since the low level IR
14382   no longer contains the neccessary information. But it is easier to do.
14383   - later: harder to implement, enables more optimizations.
14384 - Branches inside bblocks:
14385   - created when decomposing complex opcodes.
14386     - branches to another bblock: harmless, but not tracked by the branch
14387       optimizations, so need to branch to a label at the start of the bblock.
14388     - branches to inside the same bblock: very problematic, trips up the local
14389       reg allocator. Can be fixed by spitting the current bblock, but that is a
14390       complex operation, since some local vregs can become global vregs etc.
14391 - Local/global vregs:
14392   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14393     local register allocator.
14394   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14395     structure, created by mono_create_var (). Assigned to hregs or the stack by
14396     the global register allocator.
14397 - When to do optimizations like alu->alu_imm:
14398   - earlier -> saves work later on since the IR will be smaller/simpler
14399   - later -> can work on more instructions
14400 - Handling of valuetypes:
14401   - When a vtype is pushed on the stack, a new temporary is created, an
14402     instruction computing its address (LDADDR) is emitted and pushed on
14403     the stack. Need to optimize cases when the vtype is used immediately as in
14404     argument passing, stloc etc.
14405 - Instead of the to_end stuff in the old JIT, simply call the function handling
14406   the values on the stack before emitting the last instruction of the bb.
14407 */
14408
14409 #else /* !DISABLE_JIT */
14410
14411 void
14412 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
14413 {
14414 }
14415
14416 #endif /* !DISABLE_JIT */